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-rw-r--r--vendor/golang.org/x/crypto/ed25519/ed25519.go181
-rw-r--r--vendor/golang.org/x/crypto/ed25519/internal/edwards25519/const.go1422
-rw-r--r--vendor/golang.org/x/crypto/ed25519/internal/edwards25519/edwards25519.go1771
-rw-r--r--vendor/golang.org/x/net/internal/timeseries/timeseries.go525
-rw-r--r--vendor/golang.org/x/net/trace/events.go532
-rw-r--r--vendor/golang.org/x/net/trace/histogram.go365
-rw-r--r--vendor/golang.org/x/net/trace/trace.go1079
7 files changed, 0 insertions, 5875 deletions
diff --git a/vendor/golang.org/x/crypto/ed25519/ed25519.go b/vendor/golang.org/x/crypto/ed25519/ed25519.go
deleted file mode 100644
index 16cd38546..000000000
--- a/vendor/golang.org/x/crypto/ed25519/ed25519.go
+++ /dev/null
@@ -1,181 +0,0 @@
-// Copyright 2016 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// Package ed25519 implements the Ed25519 signature algorithm. See
-// https://ed25519.cr.yp.to/.
-//
-// These functions are also compatible with the “Ed25519” function defined in
-// https://tools.ietf.org/html/draft-irtf-cfrg-eddsa-05.
-package ed25519
-
-// This code is a port of the public domain, “ref10” implementation of ed25519
-// from SUPERCOP.
-
-import (
- "bytes"
- "crypto"
- cryptorand "crypto/rand"
- "crypto/sha512"
- "errors"
- "io"
- "strconv"
-
- "golang.org/x/crypto/ed25519/internal/edwards25519"
-)
-
-const (
- // PublicKeySize is the size, in bytes, of public keys as used in this package.
- PublicKeySize = 32
- // PrivateKeySize is the size, in bytes, of private keys as used in this package.
- PrivateKeySize = 64
- // SignatureSize is the size, in bytes, of signatures generated and verified by this package.
- SignatureSize = 64
-)
-
-// PublicKey is the type of Ed25519 public keys.
-type PublicKey []byte
-
-// PrivateKey is the type of Ed25519 private keys. It implements crypto.Signer.
-type PrivateKey []byte
-
-// Public returns the PublicKey corresponding to priv.
-func (priv PrivateKey) Public() crypto.PublicKey {
- publicKey := make([]byte, PublicKeySize)
- copy(publicKey, priv[32:])
- return PublicKey(publicKey)
-}
-
-// Sign signs the given message with priv.
-// Ed25519 performs two passes over messages to be signed and therefore cannot
-// handle pre-hashed messages. Thus opts.HashFunc() must return zero to
-// indicate the message hasn't been hashed. This can be achieved by passing
-// crypto.Hash(0) as the value for opts.
-func (priv PrivateKey) Sign(rand io.Reader, message []byte, opts crypto.SignerOpts) (signature []byte, err error) {
- if opts.HashFunc() != crypto.Hash(0) {
- return nil, errors.New("ed25519: cannot sign hashed message")
- }
-
- return Sign(priv, message), nil
-}
-
-// GenerateKey generates a public/private key pair using entropy from rand.
-// If rand is nil, crypto/rand.Reader will be used.
-func GenerateKey(rand io.Reader) (publicKey PublicKey, privateKey PrivateKey, err error) {
- if rand == nil {
- rand = cryptorand.Reader
- }
-
- privateKey = make([]byte, PrivateKeySize)
- publicKey = make([]byte, PublicKeySize)
- _, err = io.ReadFull(rand, privateKey[:32])
- if err != nil {
- return nil, nil, err
- }
-
- digest := sha512.Sum512(privateKey[:32])
- digest[0] &= 248
- digest[31] &= 127
- digest[31] |= 64
-
- var A edwards25519.ExtendedGroupElement
- var hBytes [32]byte
- copy(hBytes[:], digest[:])
- edwards25519.GeScalarMultBase(&A, &hBytes)
- var publicKeyBytes [32]byte
- A.ToBytes(&publicKeyBytes)
-
- copy(privateKey[32:], publicKeyBytes[:])
- copy(publicKey, publicKeyBytes[:])
-
- return publicKey, privateKey, nil
-}
-
-// Sign signs the message with privateKey and returns a signature. It will
-// panic if len(privateKey) is not PrivateKeySize.
-func Sign(privateKey PrivateKey, message []byte) []byte {
- if l := len(privateKey); l != PrivateKeySize {
- panic("ed25519: bad private key length: " + strconv.Itoa(l))
- }
-
- h := sha512.New()
- h.Write(privateKey[:32])
-
- var digest1, messageDigest, hramDigest [64]byte
- var expandedSecretKey [32]byte
- h.Sum(digest1[:0])
- copy(expandedSecretKey[:], digest1[:])
- expandedSecretKey[0] &= 248
- expandedSecretKey[31] &= 63
- expandedSecretKey[31] |= 64
-
- h.Reset()
- h.Write(digest1[32:])
- h.Write(message)
- h.Sum(messageDigest[:0])
-
- var messageDigestReduced [32]byte
- edwards25519.ScReduce(&messageDigestReduced, &messageDigest)
- var R edwards25519.ExtendedGroupElement
- edwards25519.GeScalarMultBase(&R, &messageDigestReduced)
-
- var encodedR [32]byte
- R.ToBytes(&encodedR)
-
- h.Reset()
- h.Write(encodedR[:])
- h.Write(privateKey[32:])
- h.Write(message)
- h.Sum(hramDigest[:0])
- var hramDigestReduced [32]byte
- edwards25519.ScReduce(&hramDigestReduced, &hramDigest)
-
- var s [32]byte
- edwards25519.ScMulAdd(&s, &hramDigestReduced, &expandedSecretKey, &messageDigestReduced)
-
- signature := make([]byte, SignatureSize)
- copy(signature[:], encodedR[:])
- copy(signature[32:], s[:])
-
- return signature
-}
-
-// Verify reports whether sig is a valid signature of message by publicKey. It
-// will panic if len(publicKey) is not PublicKeySize.
-func Verify(publicKey PublicKey, message, sig []byte) bool {
- if l := len(publicKey); l != PublicKeySize {
- panic("ed25519: bad public key length: " + strconv.Itoa(l))
- }
-
- if len(sig) != SignatureSize || sig[63]&224 != 0 {
- return false
- }
-
- var A edwards25519.ExtendedGroupElement
- var publicKeyBytes [32]byte
- copy(publicKeyBytes[:], publicKey)
- if !A.FromBytes(&publicKeyBytes) {
- return false
- }
- edwards25519.FeNeg(&A.X, &A.X)
- edwards25519.FeNeg(&A.T, &A.T)
-
- h := sha512.New()
- h.Write(sig[:32])
- h.Write(publicKey[:])
- h.Write(message)
- var digest [64]byte
- h.Sum(digest[:0])
-
- var hReduced [32]byte
- edwards25519.ScReduce(&hReduced, &digest)
-
- var R edwards25519.ProjectiveGroupElement
- var b [32]byte
- copy(b[:], sig[32:])
- edwards25519.GeDoubleScalarMultVartime(&R, &hReduced, &A, &b)
-
- var checkR [32]byte
- R.ToBytes(&checkR)
- return bytes.Equal(sig[:32], checkR[:])
-}
diff --git a/vendor/golang.org/x/crypto/ed25519/internal/edwards25519/const.go b/vendor/golang.org/x/crypto/ed25519/internal/edwards25519/const.go
deleted file mode 100644
index e39f086c1..000000000
--- a/vendor/golang.org/x/crypto/ed25519/internal/edwards25519/const.go
+++ /dev/null
@@ -1,1422 +0,0 @@
-// Copyright 2016 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package edwards25519
-
-// These values are from the public domain, “ref10” implementation of ed25519
-// from SUPERCOP.
-
-// d is a constant in the Edwards curve equation.
-var d = FieldElement{
- -10913610, 13857413, -15372611, 6949391, 114729, -8787816, -6275908, -3247719, -18696448, -12055116,
-}
-
-// d2 is 2*d.
-var d2 = FieldElement{
- -21827239, -5839606, -30745221, 13898782, 229458, 15978800, -12551817, -6495438, 29715968, 9444199,
-}
-
-// SqrtM1 is the square-root of -1 in the field.
-var SqrtM1 = FieldElement{
- -32595792, -7943725, 9377950, 3500415, 12389472, -272473, -25146209, -2005654, 326686, 11406482,
-}
-
-// A is a constant in the Montgomery-form of curve25519.
-var A = FieldElement{
- 486662, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-}
-
-// bi contains precomputed multiples of the base-point. See the Ed25519 paper
-// for a discussion about how these values are used.
-var bi = [8]PreComputedGroupElement{
- {
- FieldElement{25967493, -14356035, 29566456, 3660896, -12694345, 4014787, 27544626, -11754271, -6079156, 2047605},
- FieldElement{-12545711, 934262, -2722910, 3049990, -727428, 9406986, 12720692, 5043384, 19500929, -15469378},
- FieldElement{-8738181, 4489570, 9688441, -14785194, 10184609, -12363380, 29287919, 11864899, -24514362, -4438546},
- },
- {
- FieldElement{15636291, -9688557, 24204773, -7912398, 616977, -16685262, 27787600, -14772189, 28944400, -1550024},
- FieldElement{16568933, 4717097, -11556148, -1102322, 15682896, -11807043, 16354577, -11775962, 7689662, 11199574},
- FieldElement{30464156, -5976125, -11779434, -15670865, 23220365, 15915852, 7512774, 10017326, -17749093, -9920357},
- },
- {
- FieldElement{10861363, 11473154, 27284546, 1981175, -30064349, 12577861, 32867885, 14515107, -15438304, 10819380},
- FieldElement{4708026, 6336745, 20377586, 9066809, -11272109, 6594696, -25653668, 12483688, -12668491, 5581306},
- FieldElement{19563160, 16186464, -29386857, 4097519, 10237984, -4348115, 28542350, 13850243, -23678021, -15815942},
- },
- {
- FieldElement{5153746, 9909285, 1723747, -2777874, 30523605, 5516873, 19480852, 5230134, -23952439, -15175766},
- FieldElement{-30269007, -3463509, 7665486, 10083793, 28475525, 1649722, 20654025, 16520125, 30598449, 7715701},
- FieldElement{28881845, 14381568, 9657904, 3680757, -20181635, 7843316, -31400660, 1370708, 29794553, -1409300},
- },
- {
- FieldElement{-22518993, -6692182, 14201702, -8745502, -23510406, 8844726, 18474211, -1361450, -13062696, 13821877},
- FieldElement{-6455177, -7839871, 3374702, -4740862, -27098617, -10571707, 31655028, -7212327, 18853322, -14220951},
- FieldElement{4566830, -12963868, -28974889, -12240689, -7602672, -2830569, -8514358, -10431137, 2207753, -3209784},
- },
- {
- FieldElement{-25154831, -4185821, 29681144, 7868801, -6854661, -9423865, -12437364, -663000, -31111463, -16132436},
- FieldElement{25576264, -2703214, 7349804, -11814844, 16472782, 9300885, 3844789, 15725684, 171356, 6466918},
- FieldElement{23103977, 13316479, 9739013, -16149481, 817875, -15038942, 8965339, -14088058, -30714912, 16193877},
- },
- {
- FieldElement{-33521811, 3180713, -2394130, 14003687, -16903474, -16270840, 17238398, 4729455, -18074513, 9256800},
- FieldElement{-25182317, -4174131, 32336398, 5036987, -21236817, 11360617, 22616405, 9761698, -19827198, 630305},
- FieldElement{-13720693, 2639453, -24237460, -7406481, 9494427, -5774029, -6554551, -15960994, -2449256, -14291300},
- },
- {
- FieldElement{-3151181, -5046075, 9282714, 6866145, -31907062, -863023, -18940575, 15033784, 25105118, -7894876},
- FieldElement{-24326370, 15950226, -31801215, -14592823, -11662737, -5090925, 1573892, -2625887, 2198790, -15804619},
- FieldElement{-3099351, 10324967, -2241613, 7453183, -5446979, -2735503, -13812022, -16236442, -32461234, -12290683},
- },
-}
-
-// base contains precomputed multiples of the base-point. See the Ed25519 paper
-// for a discussion about how these values are used.
-var base = [32][8]PreComputedGroupElement{
- {
- {
- FieldElement{25967493, -14356035, 29566456, 3660896, -12694345, 4014787, 27544626, -11754271, -6079156, 2047605},
- FieldElement{-12545711, 934262, -2722910, 3049990, -727428, 9406986, 12720692, 5043384, 19500929, -15469378},
- FieldElement{-8738181, 4489570, 9688441, -14785194, 10184609, -12363380, 29287919, 11864899, -24514362, -4438546},
- },
- {
- FieldElement{-12815894, -12976347, -21581243, 11784320, -25355658, -2750717, -11717903, -3814571, -358445, -10211303},
- FieldElement{-21703237, 6903825, 27185491, 6451973, -29577724, -9554005, -15616551, 11189268, -26829678, -5319081},
- FieldElement{26966642, 11152617, 32442495, 15396054, 14353839, -12752335, -3128826, -9541118, -15472047, -4166697},
- },
- {
- FieldElement{15636291, -9688557, 24204773, -7912398, 616977, -16685262, 27787600, -14772189, 28944400, -1550024},
- FieldElement{16568933, 4717097, -11556148, -1102322, 15682896, -11807043, 16354577, -11775962, 7689662, 11199574},
- FieldElement{30464156, -5976125, -11779434, -15670865, 23220365, 15915852, 7512774, 10017326, -17749093, -9920357},
- },
- {
- FieldElement{-17036878, 13921892, 10945806, -6033431, 27105052, -16084379, -28926210, 15006023, 3284568, -6276540},
- FieldElement{23599295, -8306047, -11193664, -7687416, 13236774, 10506355, 7464579, 9656445, 13059162, 10374397},
- FieldElement{7798556, 16710257, 3033922, 2874086, 28997861, 2835604, 32406664, -3839045, -641708, -101325},
- },
- {
- FieldElement{10861363, 11473154, 27284546, 1981175, -30064349, 12577861, 32867885, 14515107, -15438304, 10819380},
- FieldElement{4708026, 6336745, 20377586, 9066809, -11272109, 6594696, -25653668, 12483688, -12668491, 5581306},
- FieldElement{19563160, 16186464, -29386857, 4097519, 10237984, -4348115, 28542350, 13850243, -23678021, -15815942},
- },
- {
- FieldElement{-15371964, -12862754, 32573250, 4720197, -26436522, 5875511, -19188627, -15224819, -9818940, -12085777},
- FieldElement{-8549212, 109983, 15149363, 2178705, 22900618, 4543417, 3044240, -15689887, 1762328, 14866737},
- FieldElement{-18199695, -15951423, -10473290, 1707278, -17185920, 3916101, -28236412, 3959421, 27914454, 4383652},
- },
- {
- FieldElement{5153746, 9909285, 1723747, -2777874, 30523605, 5516873, 19480852, 5230134, -23952439, -15175766},
- FieldElement{-30269007, -3463509, 7665486, 10083793, 28475525, 1649722, 20654025, 16520125, 30598449, 7715701},
- FieldElement{28881845, 14381568, 9657904, 3680757, -20181635, 7843316, -31400660, 1370708, 29794553, -1409300},
- },
- {
- FieldElement{14499471, -2729599, -33191113, -4254652, 28494862, 14271267, 30290735, 10876454, -33154098, 2381726},
- FieldElement{-7195431, -2655363, -14730155, 462251, -27724326, 3941372, -6236617, 3696005, -32300832, 15351955},
- FieldElement{27431194, 8222322, 16448760, -3907995, -18707002, 11938355, -32961401, -2970515, 29551813, 10109425},
- },
- },
- {
- {
- FieldElement{-13657040, -13155431, -31283750, 11777098, 21447386, 6519384, -2378284, -1627556, 10092783, -4764171},
- FieldElement{27939166, 14210322, 4677035, 16277044, -22964462, -12398139, -32508754, 12005538, -17810127, 12803510},
- FieldElement{17228999, -15661624, -1233527, 300140, -1224870, -11714777, 30364213, -9038194, 18016357, 4397660},
- },
- {
- FieldElement{-10958843, -7690207, 4776341, -14954238, 27850028, -15602212, -26619106, 14544525, -17477504, 982639},
- FieldElement{29253598, 15796703, -2863982, -9908884, 10057023, 3163536, 7332899, -4120128, -21047696, 9934963},
- FieldElement{5793303, 16271923, -24131614, -10116404, 29188560, 1206517, -14747930, 4559895, -30123922, -10897950},
- },
- {
- FieldElement{-27643952, -11493006, 16282657, -11036493, 28414021, -15012264, 24191034, 4541697, -13338309, 5500568},
- FieldElement{12650548, -1497113, 9052871, 11355358, -17680037, -8400164, -17430592, 12264343, 10874051, 13524335},
- FieldElement{25556948, -3045990, 714651, 2510400, 23394682, -10415330, 33119038, 5080568, -22528059, 5376628},
- },
- {
- FieldElement{-26088264, -4011052, -17013699, -3537628, -6726793, 1920897, -22321305, -9447443, 4535768, 1569007},
- FieldElement{-2255422, 14606630, -21692440, -8039818, 28430649, 8775819, -30494562, 3044290, 31848280, 12543772},
- FieldElement{-22028579, 2943893, -31857513, 6777306, 13784462, -4292203, -27377195, -2062731, 7718482, 14474653},
- },
- {
- FieldElement{2385315, 2454213, -22631320, 46603, -4437935, -15680415, 656965, -7236665, 24316168, -5253567},
- FieldElement{13741529, 10911568, -33233417, -8603737, -20177830, -1033297, 33040651, -13424532, -20729456, 8321686},
- FieldElement{21060490, -2212744, 15712757, -4336099, 1639040, 10656336, 23845965, -11874838, -9984458, 608372},
- },
- {
- FieldElement{-13672732, -15087586, -10889693, -7557059, -6036909, 11305547, 1123968, -6780577, 27229399, 23887},
- FieldElement{-23244140, -294205, -11744728, 14712571, -29465699, -2029617, 12797024, -6440308, -1633405, 16678954},
- FieldElement{-29500620, 4770662, -16054387, 14001338, 7830047, 9564805, -1508144, -4795045, -17169265, 4904953},
- },
- {
- FieldElement{24059557, 14617003, 19037157, -15039908, 19766093, -14906429, 5169211, 16191880, 2128236, -4326833},
- FieldElement{-16981152, 4124966, -8540610, -10653797, 30336522, -14105247, -29806336, 916033, -6882542, -2986532},
- FieldElement{-22630907, 12419372, -7134229, -7473371, -16478904, 16739175, 285431, 2763829, 15736322, 4143876},
- },
- {
- FieldElement{2379352, 11839345, -4110402, -5988665, 11274298, 794957, 212801, -14594663, 23527084, -16458268},
- FieldElement{33431127, -11130478, -17838966, -15626900, 8909499, 8376530, -32625340, 4087881, -15188911, -14416214},
- FieldElement{1767683, 7197987, -13205226, -2022635, -13091350, 448826, 5799055, 4357868, -4774191, -16323038},
- },
- },
- {
- {
- FieldElement{6721966, 13833823, -23523388, -1551314, 26354293, -11863321, 23365147, -3949732, 7390890, 2759800},
- FieldElement{4409041, 2052381, 23373853, 10530217, 7676779, -12885954, 21302353, -4264057, 1244380, -12919645},
- FieldElement{-4421239, 7169619, 4982368, -2957590, 30256825, -2777540, 14086413, 9208236, 15886429, 16489664},
- },
- {
- FieldElement{1996075, 10375649, 14346367, 13311202, -6874135, -16438411, -13693198, 398369, -30606455, -712933},
- FieldElement{-25307465, 9795880, -2777414, 14878809, -33531835, 14780363, 13348553, 12076947, -30836462, 5113182},
- FieldElement{-17770784, 11797796, 31950843, 13929123, -25888302, 12288344, -30341101, -7336386, 13847711, 5387222},
- },
- {
- FieldElement{-18582163, -3416217, 17824843, -2340966, 22744343, -10442611, 8763061, 3617786, -19600662, 10370991},
- FieldElement{20246567, -14369378, 22358229, -543712, 18507283, -10413996, 14554437, -8746092, 32232924, 16763880},
- FieldElement{9648505, 10094563, 26416693, 14745928, -30374318, -6472621, 11094161, 15689506, 3140038, -16510092},
- },
- {
- FieldElement{-16160072, 5472695, 31895588, 4744994, 8823515, 10365685, -27224800, 9448613, -28774454, 366295},
- FieldElement{19153450, 11523972, -11096490, -6503142, -24647631, 5420647, 28344573, 8041113, 719605, 11671788},
- FieldElement{8678025, 2694440, -6808014, 2517372, 4964326, 11152271, -15432916, -15266516, 27000813, -10195553},
- },
- {
- FieldElement{-15157904, 7134312, 8639287, -2814877, -7235688, 10421742, 564065, 5336097, 6750977, -14521026},
- FieldElement{11836410, -3979488, 26297894, 16080799, 23455045, 15735944, 1695823, -8819122, 8169720, 16220347},
- FieldElement{-18115838, 8653647, 17578566, -6092619, -8025777, -16012763, -11144307, -2627664, -5990708, -14166033},
- },
- {
- FieldElement{-23308498, -10968312, 15213228, -10081214, -30853605, -11050004, 27884329, 2847284, 2655861, 1738395},
- FieldElement{-27537433, -14253021, -25336301, -8002780, -9370762, 8129821, 21651608, -3239336, -19087449, -11005278},
- FieldElement{1533110, 3437855, 23735889, 459276, 29970501, 11335377, 26030092, 5821408, 10478196, 8544890},
- },
- {
- FieldElement{32173121, -16129311, 24896207, 3921497, 22579056, -3410854, 19270449, 12217473, 17789017, -3395995},
- FieldElement{-30552961, -2228401, -15578829, -10147201, 13243889, 517024, 15479401, -3853233, 30460520, 1052596},
- FieldElement{-11614875, 13323618, 32618793, 8175907, -15230173, 12596687, 27491595, -4612359, 3179268, -9478891},
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- {
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- FieldElement{-7171154, 3178080, 23970071, 6201893, -17195577, -4489192, -21876275, -13982627, 32208683, -1198248},
- },
- {
- FieldElement{-16657702, 2817643, -10286362, 14811298, 6024667, 13349505, -27315504, -10497842, -27672585, -11539858},
- FieldElement{15941029, -9405932, -21367050, 8062055, 31876073, -238629, -15278393, -1444429, 15397331, -4130193},
- FieldElement{8934485, -13485467, -23286397, -13423241, -32446090, 14047986, 31170398, -1441021, -27505566, 15087184},
- },
- {
- FieldElement{-18357243, -2156491, 24524913, -16677868, 15520427, -6360776, -15502406, 11461896, 16788528, -5868942},
- FieldElement{-1947386, 16013773, 21750665, 3714552, -17401782, -16055433, -3770287, -10323320, 31322514, -11615635},
- FieldElement{21426655, -5650218, -13648287, -5347537, -28812189, -4920970, -18275391, -14621414, 13040862, -12112948},
- },
- {
- FieldElement{11293895, 12478086, -27136401, 15083750, -29307421, 14748872, 14555558, -13417103, 1613711, 4896935},
- FieldElement{-25894883, 15323294, -8489791, -8057900, 25967126, -13425460, 2825960, -4897045, -23971776, -11267415},
- FieldElement{-15924766, -5229880, -17443532, 6410664, 3622847, 10243618, 20615400, 12405433, -23753030, -8436416},
- },
- {
- FieldElement{-7091295, 12556208, -20191352, 9025187, -17072479, 4333801, 4378436, 2432030, 23097949, -566018},
- FieldElement{4565804, -16025654, 20084412, -7842817, 1724999, 189254, 24767264, 10103221, -18512313, 2424778},
- FieldElement{366633, -11976806, 8173090, -6890119, 30788634, 5745705, -7168678, 1344109, -3642553, 12412659},
- },
- {
- FieldElement{-24001791, 7690286, 14929416, -168257, -32210835, -13412986, 24162697, -15326504, -3141501, 11179385},
- FieldElement{18289522, -14724954, 8056945, 16430056, -21729724, 7842514, -6001441, -1486897, -18684645, -11443503},
- FieldElement{476239, 6601091, -6152790, -9723375, 17503545, -4863900, 27672959, 13403813, 11052904, 5219329},
- },
- },
- {
- {
- FieldElement{20678546, -8375738, -32671898, 8849123, -5009758, 14574752, 31186971, -3973730, 9014762, -8579056},
- FieldElement{-13644050, -10350239, -15962508, 5075808, -1514661, -11534600, -33102500, 9160280, 8473550, -3256838},
- FieldElement{24900749, 14435722, 17209120, -15292541, -22592275, 9878983, -7689309, -16335821, -24568481, 11788948},
- },
- {
- FieldElement{-3118155, -11395194, -13802089, 14797441, 9652448, -6845904, -20037437, 10410733, -24568470, -1458691},
- FieldElement{-15659161, 16736706, -22467150, 10215878, -9097177, 7563911, 11871841, -12505194, -18513325, 8464118},
- FieldElement{-23400612, 8348507, -14585951, -861714, -3950205, -6373419, 14325289, 8628612, 33313881, -8370517},
- },
- {
- FieldElement{-20186973, -4967935, 22367356, 5271547, -1097117, -4788838, -24805667, -10236854, -8940735, -5818269},
- FieldElement{-6948785, -1795212, -32625683, -16021179, 32635414, -7374245, 15989197, -12838188, 28358192, -4253904},
- FieldElement{-23561781, -2799059, -32351682, -1661963, -9147719, 10429267, -16637684, 4072016, -5351664, 5596589},
- },
- {
- FieldElement{-28236598, -3390048, 12312896, 6213178, 3117142, 16078565, 29266239, 2557221, 1768301, 15373193},
- FieldElement{-7243358, -3246960, -4593467, -7553353, -127927, -912245, -1090902, -4504991, -24660491, 3442910},
- FieldElement{-30210571, 5124043, 14181784, 8197961, 18964734, -11939093, 22597931, 7176455, -18585478, 13365930},
- },
- {
- FieldElement{-7877390, -1499958, 8324673, 4690079, 6261860, 890446, 24538107, -8570186, -9689599, -3031667},
- FieldElement{25008904, -10771599, -4305031, -9638010, 16265036, 15721635, 683793, -11823784, 15723479, -15163481},
- FieldElement{-9660625, 12374379, -27006999, -7026148, -7724114, -12314514, 11879682, 5400171, 519526, -1235876},
- },
- {
- FieldElement{22258397, -16332233, -7869817, 14613016, -22520255, -2950923, -20353881, 7315967, 16648397, 7605640},
- FieldElement{-8081308, -8464597, -8223311, 9719710, 19259459, -15348212, 23994942, -5281555, -9468848, 4763278},
- FieldElement{-21699244, 9220969, -15730624, 1084137, -25476107, -2852390, 31088447, -7764523, -11356529, 728112},
- },
- {
- FieldElement{26047220, -11751471, -6900323, -16521798, 24092068, 9158119, -4273545, -12555558, -29365436, -5498272},
- FieldElement{17510331, -322857, 5854289, 8403524, 17133918, -3112612, -28111007, 12327945, 10750447, 10014012},
- FieldElement{-10312768, 3936952, 9156313, -8897683, 16498692, -994647, -27481051, -666732, 3424691, 7540221},
- },
- {
- FieldElement{30322361, -6964110, 11361005, -4143317, 7433304, 4989748, -7071422, -16317219, -9244265, 15258046},
- FieldElement{13054562, -2779497, 19155474, 469045, -12482797, 4566042, 5631406, 2711395, 1062915, -5136345},
- FieldElement{-19240248, -11254599, -29509029, -7499965, -5835763, 13005411, -6066489, 12194497, 32960380, 1459310},
- },
- },
- {
- {
- FieldElement{19852034, 7027924, 23669353, 10020366, 8586503, -6657907, 394197, -6101885, 18638003, -11174937},
- FieldElement{31395534, 15098109, 26581030, 8030562, -16527914, -5007134, 9012486, -7584354, -6643087, -5442636},
- FieldElement{-9192165, -2347377, -1997099, 4529534, 25766844, 607986, -13222, 9677543, -32294889, -6456008},
- },
- {
- FieldElement{-2444496, -149937, 29348902, 8186665, 1873760, 12489863, -30934579, -7839692, -7852844, -8138429},
- FieldElement{-15236356, -15433509, 7766470, 746860, 26346930, -10221762, -27333451, 10754588, -9431476, 5203576},
- FieldElement{31834314, 14135496, -770007, 5159118, 20917671, -16768096, -7467973, -7337524, 31809243, 7347066},
- },
- {
- FieldElement{-9606723, -11874240, 20414459, 13033986, 13716524, -11691881, 19797970, -12211255, 15192876, -2087490},
- FieldElement{-12663563, -2181719, 1168162, -3804809, 26747877, -14138091, 10609330, 12694420, 33473243, -13382104},
- FieldElement{33184999, 11180355, 15832085, -11385430, -1633671, 225884, 15089336, -11023903, -6135662, 14480053},
- },
- {
- FieldElement{31308717, -5619998, 31030840, -1897099, 15674547, -6582883, 5496208, 13685227, 27595050, 8737275},
- FieldElement{-20318852, -15150239, 10933843, -16178022, 8335352, -7546022, -31008351, -12610604, 26498114, 66511},
- FieldElement{22644454, -8761729, -16671776, 4884562, -3105614, -13559366, 30540766, -4286747, -13327787, -7515095},
- },
- {
- FieldElement{-28017847, 9834845, 18617207, -2681312, -3401956, -13307506, 8205540, 13585437, -17127465, 15115439},
- FieldElement{23711543, -672915, 31206561, -8362711, 6164647, -9709987, -33535882, -1426096, 8236921, 16492939},
- FieldElement{-23910559, -13515526, -26299483, -4503841, 25005590, -7687270, 19574902, 10071562, 6708380, -6222424},
- },
- {
- FieldElement{2101391, -4930054, 19702731, 2367575, -15427167, 1047675, 5301017, 9328700, 29955601, -11678310},
- FieldElement{3096359, 9271816, -21620864, -15521844, -14847996, -7592937, -25892142, -12635595, -9917575, 6216608},
- FieldElement{-32615849, 338663, -25195611, 2510422, -29213566, -13820213, 24822830, -6146567, -26767480, 7525079},
- },
- {
- FieldElement{-23066649, -13985623, 16133487, -7896178, -3389565, 778788, -910336, -2782495, -19386633, 11994101},
- FieldElement{21691500, -13624626, -641331, -14367021, 3285881, -3483596, -25064666, 9718258, -7477437, 13381418},
- FieldElement{18445390, -4202236, 14979846, 11622458, -1727110, -3582980, 23111648, -6375247, 28535282, 15779576},
- },
- {
- FieldElement{30098053, 3089662, -9234387, 16662135, -21306940, 11308411, -14068454, 12021730, 9955285, -16303356},
- FieldElement{9734894, -14576830, -7473633, -9138735, 2060392, 11313496, -18426029, 9924399, 20194861, 13380996},
- FieldElement{-26378102, -7965207, -22167821, 15789297, -18055342, -6168792, -1984914, 15707771, 26342023, 10146099},
- },
- },
- {
- {
- FieldElement{-26016874, -219943, 21339191, -41388, 19745256, -2878700, -29637280, 2227040, 21612326, -545728},
- FieldElement{-13077387, 1184228, 23562814, -5970442, -20351244, -6348714, 25764461, 12243797, -20856566, 11649658},
- FieldElement{-10031494, 11262626, 27384172, 2271902, 26947504, -15997771, 39944, 6114064, 33514190, 2333242},
- },
- {
- FieldElement{-21433588, -12421821, 8119782, 7219913, -21830522, -9016134, -6679750, -12670638, 24350578, -13450001},
- FieldElement{-4116307, -11271533, -23886186, 4843615, -30088339, 690623, -31536088, -10406836, 8317860, 12352766},
- FieldElement{18200138, -14475911, -33087759, -2696619, -23702521, -9102511, -23552096, -2287550, 20712163, 6719373},
- },
- {
- FieldElement{26656208, 6075253, -7858556, 1886072, -28344043, 4262326, 11117530, -3763210, 26224235, -3297458},
- FieldElement{-17168938, -14854097, -3395676, -16369877, -19954045, 14050420, 21728352, 9493610, 18620611, -16428628},
- FieldElement{-13323321, 13325349, 11432106, 5964811, 18609221, 6062965, -5269471, -9725556, -30701573, -16479657},
- },
- {
- FieldElement{-23860538, -11233159, 26961357, 1640861, -32413112, -16737940, 12248509, -5240639, 13735342, 1934062},
- FieldElement{25089769, 6742589, 17081145, -13406266, 21909293, -16067981, -15136294, -3765346, -21277997, 5473616},
- FieldElement{31883677, -7961101, 1083432, -11572403, 22828471, 13290673, -7125085, 12469656, 29111212, -5451014},
- },
- {
- FieldElement{24244947, -15050407, -26262976, 2791540, -14997599, 16666678, 24367466, 6388839, -10295587, 452383},
- FieldElement{-25640782, -3417841, 5217916, 16224624, 19987036, -4082269, -24236251, -5915248, 15766062, 8407814},
- FieldElement{-20406999, 13990231, 15495425, 16395525, 5377168, 15166495, -8917023, -4388953, -8067909, 2276718},
- },
- {
- FieldElement{30157918, 12924066, -17712050, 9245753, 19895028, 3368142, -23827587, 5096219, 22740376, -7303417},
- FieldElement{2041139, -14256350, 7783687, 13876377, -25946985, -13352459, 24051124, 13742383, -15637599, 13295222},
- FieldElement{33338237, -8505733, 12532113, 7977527, 9106186, -1715251, -17720195, -4612972, -4451357, -14669444},
- },
- {
- FieldElement{-20045281, 5454097, -14346548, 6447146, 28862071, 1883651, -2469266, -4141880, 7770569, 9620597},
- FieldElement{23208068, 7979712, 33071466, 8149229, 1758231, -10834995, 30945528, -1694323, -33502340, -14767970},
- FieldElement{1439958, -16270480, -1079989, -793782, 4625402, 10647766, -5043801, 1220118, 30494170, -11440799},
- },
- {
- FieldElement{-5037580, -13028295, -2970559, -3061767, 15640974, -6701666, -26739026, 926050, -1684339, -13333647},
- FieldElement{13908495, -3549272, 30919928, -6273825, -21521863, 7989039, 9021034, 9078865, 3353509, 4033511},
- FieldElement{-29663431, -15113610, 32259991, -344482, 24295849, -12912123, 23161163, 8839127, 27485041, 7356032},
- },
- },
- {
- {
- FieldElement{9661027, 705443, 11980065, -5370154, -1628543, 14661173, -6346142, 2625015, 28431036, -16771834},
- FieldElement{-23839233, -8311415, -25945511, 7480958, -17681669, -8354183, -22545972, 14150565, 15970762, 4099461},
- FieldElement{29262576, 16756590, 26350592, -8793563, 8529671, -11208050, 13617293, -9937143, 11465739, 8317062},
- },
- {
- FieldElement{-25493081, -6962928, 32500200, -9419051, -23038724, -2302222, 14898637, 3848455, 20969334, -5157516},
- FieldElement{-20384450, -14347713, -18336405, 13884722, -33039454, 2842114, -21610826, -3649888, 11177095, 14989547},
- FieldElement{-24496721, -11716016, 16959896, 2278463, 12066309, 10137771, 13515641, 2581286, -28487508, 9930240},
- },
- {
- FieldElement{-17751622, -2097826, 16544300, -13009300, -15914807, -14949081, 18345767, -13403753, 16291481, -5314038},
- FieldElement{-33229194, 2553288, 32678213, 9875984, 8534129, 6889387, -9676774, 6957617, 4368891, 9788741},
- FieldElement{16660756, 7281060, -10830758, 12911820, 20108584, -8101676, -21722536, -8613148, 16250552, -11111103},
- },
- {
- FieldElement{-19765507, 2390526, -16551031, 14161980, 1905286, 6414907, 4689584, 10604807, -30190403, 4782747},
- FieldElement{-1354539, 14736941, -7367442, -13292886, 7710542, -14155590, -9981571, 4383045, 22546403, 437323},
- FieldElement{31665577, -12180464, -16186830, 1491339, -18368625, 3294682, 27343084, 2786261, -30633590, -14097016},
- },
- {
- FieldElement{-14467279, -683715, -33374107, 7448552, 19294360, 14334329, -19690631, 2355319, -19284671, -6114373},
- FieldElement{15121312, -15796162, 6377020, -6031361, -10798111, -12957845, 18952177, 15496498, -29380133, 11754228},
- FieldElement{-2637277, -13483075, 8488727, -14303896, 12728761, -1622493, 7141596, 11724556, 22761615, -10134141},
- },
- {
- FieldElement{16918416, 11729663, -18083579, 3022987, -31015732, -13339659, -28741185, -12227393, 32851222, 11717399},
- FieldElement{11166634, 7338049, -6722523, 4531520, -29468672, -7302055, 31474879, 3483633, -1193175, -4030831},
- FieldElement{-185635, 9921305, 31456609, -13536438, -12013818, 13348923, 33142652, 6546660, -19985279, -3948376},
- },
- {
- FieldElement{-32460596, 11266712, -11197107, -7899103, 31703694, 3855903, -8537131, -12833048, -30772034, -15486313},
- FieldElement{-18006477, 12709068, 3991746, -6479188, -21491523, -10550425, -31135347, -16049879, 10928917, 3011958},
- FieldElement{-6957757, -15594337, 31696059, 334240, 29576716, 14796075, -30831056, -12805180, 18008031, 10258577},
- },
- {
- FieldElement{-22448644, 15655569, 7018479, -4410003, -30314266, -1201591, -1853465, 1367120, 25127874, 6671743},
- FieldElement{29701166, -14373934, -10878120, 9279288, -17568, 13127210, 21382910, 11042292, 25838796, 4642684},
- FieldElement{-20430234, 14955537, -24126347, 8124619, -5369288, -5990470, 30468147, -13900640, 18423289, 4177476},
- },
- },
-}
diff --git a/vendor/golang.org/x/crypto/ed25519/internal/edwards25519/edwards25519.go b/vendor/golang.org/x/crypto/ed25519/internal/edwards25519/edwards25519.go
deleted file mode 100644
index 5f8b99478..000000000
--- a/vendor/golang.org/x/crypto/ed25519/internal/edwards25519/edwards25519.go
+++ /dev/null
@@ -1,1771 +0,0 @@
-// Copyright 2016 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package edwards25519
-
-// This code is a port of the public domain, “ref10” implementation of ed25519
-// from SUPERCOP.
-
-// FieldElement represents an element of the field GF(2^255 - 19). An element
-// t, entries t[0]...t[9], represents the integer t[0]+2^26 t[1]+2^51 t[2]+2^77
-// t[3]+2^102 t[4]+...+2^230 t[9]. Bounds on each t[i] vary depending on
-// context.
-type FieldElement [10]int32
-
-var zero FieldElement
-
-func FeZero(fe *FieldElement) {
- copy(fe[:], zero[:])
-}
-
-func FeOne(fe *FieldElement) {
- FeZero(fe)
- fe[0] = 1
-}
-
-func FeAdd(dst, a, b *FieldElement) {
- dst[0] = a[0] + b[0]
- dst[1] = a[1] + b[1]
- dst[2] = a[2] + b[2]
- dst[3] = a[3] + b[3]
- dst[4] = a[4] + b[4]
- dst[5] = a[5] + b[5]
- dst[6] = a[6] + b[6]
- dst[7] = a[7] + b[7]
- dst[8] = a[8] + b[8]
- dst[9] = a[9] + b[9]
-}
-
-func FeSub(dst, a, b *FieldElement) {
- dst[0] = a[0] - b[0]
- dst[1] = a[1] - b[1]
- dst[2] = a[2] - b[2]
- dst[3] = a[3] - b[3]
- dst[4] = a[4] - b[4]
- dst[5] = a[5] - b[5]
- dst[6] = a[6] - b[6]
- dst[7] = a[7] - b[7]
- dst[8] = a[8] - b[8]
- dst[9] = a[9] - b[9]
-}
-
-func FeCopy(dst, src *FieldElement) {
- copy(dst[:], src[:])
-}
-
-// Replace (f,g) with (g,g) if b == 1;
-// replace (f,g) with (f,g) if b == 0.
-//
-// Preconditions: b in {0,1}.
-func FeCMove(f, g *FieldElement, b int32) {
- b = -b
- f[0] ^= b & (f[0] ^ g[0])
- f[1] ^= b & (f[1] ^ g[1])
- f[2] ^= b & (f[2] ^ g[2])
- f[3] ^= b & (f[3] ^ g[3])
- f[4] ^= b & (f[4] ^ g[4])
- f[5] ^= b & (f[5] ^ g[5])
- f[6] ^= b & (f[6] ^ g[6])
- f[7] ^= b & (f[7] ^ g[7])
- f[8] ^= b & (f[8] ^ g[8])
- f[9] ^= b & (f[9] ^ g[9])
-}
-
-func load3(in []byte) int64 {
- var r int64
- r = int64(in[0])
- r |= int64(in[1]) << 8
- r |= int64(in[2]) << 16
- return r
-}
-
-func load4(in []byte) int64 {
- var r int64
- r = int64(in[0])
- r |= int64(in[1]) << 8
- r |= int64(in[2]) << 16
- r |= int64(in[3]) << 24
- return r
-}
-
-func FeFromBytes(dst *FieldElement, src *[32]byte) {
- h0 := load4(src[:])
- h1 := load3(src[4:]) << 6
- h2 := load3(src[7:]) << 5
- h3 := load3(src[10:]) << 3
- h4 := load3(src[13:]) << 2
- h5 := load4(src[16:])
- h6 := load3(src[20:]) << 7
- h7 := load3(src[23:]) << 5
- h8 := load3(src[26:]) << 4
- h9 := (load3(src[29:]) & 8388607) << 2
-
- FeCombine(dst, h0, h1, h2, h3, h4, h5, h6, h7, h8, h9)
-}
-
-// FeToBytes marshals h to s.
-// Preconditions:
-// |h| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc.
-//
-// Write p=2^255-19; q=floor(h/p).
-// Basic claim: q = floor(2^(-255)(h + 19 2^(-25)h9 + 2^(-1))).
-//
-// Proof:
-// Have |h|<=p so |q|<=1 so |19^2 2^(-255) q|<1/4.
-// Also have |h-2^230 h9|<2^230 so |19 2^(-255)(h-2^230 h9)|<1/4.
-//
-// Write y=2^(-1)-19^2 2^(-255)q-19 2^(-255)(h-2^230 h9).
-// Then 0<y<1.
-//
-// Write r=h-pq.
-// Have 0<=r<=p-1=2^255-20.
-// Thus 0<=r+19(2^-255)r<r+19(2^-255)2^255<=2^255-1.
-//
-// Write x=r+19(2^-255)r+y.
-// Then 0<x<2^255 so floor(2^(-255)x) = 0 so floor(q+2^(-255)x) = q.
-//
-// Have q+2^(-255)x = 2^(-255)(h + 19 2^(-25) h9 + 2^(-1))
-// so floor(2^(-255)(h + 19 2^(-25) h9 + 2^(-1))) = q.
-func FeToBytes(s *[32]byte, h *FieldElement) {
- var carry [10]int32
-
- q := (19*h[9] + (1 << 24)) >> 25
- q = (h[0] + q) >> 26
- q = (h[1] + q) >> 25
- q = (h[2] + q) >> 26
- q = (h[3] + q) >> 25
- q = (h[4] + q) >> 26
- q = (h[5] + q) >> 25
- q = (h[6] + q) >> 26
- q = (h[7] + q) >> 25
- q = (h[8] + q) >> 26
- q = (h[9] + q) >> 25
-
- // Goal: Output h-(2^255-19)q, which is between 0 and 2^255-20.
- h[0] += 19 * q
- // Goal: Output h-2^255 q, which is between 0 and 2^255-20.
-
- carry[0] = h[0] >> 26
- h[1] += carry[0]
- h[0] -= carry[0] << 26
- carry[1] = h[1] >> 25
- h[2] += carry[1]
- h[1] -= carry[1] << 25
- carry[2] = h[2] >> 26
- h[3] += carry[2]
- h[2] -= carry[2] << 26
- carry[3] = h[3] >> 25
- h[4] += carry[3]
- h[3] -= carry[3] << 25
- carry[4] = h[4] >> 26
- h[5] += carry[4]
- h[4] -= carry[4] << 26
- carry[5] = h[5] >> 25
- h[6] += carry[5]
- h[5] -= carry[5] << 25
- carry[6] = h[6] >> 26
- h[7] += carry[6]
- h[6] -= carry[6] << 26
- carry[7] = h[7] >> 25
- h[8] += carry[7]
- h[7] -= carry[7] << 25
- carry[8] = h[8] >> 26
- h[9] += carry[8]
- h[8] -= carry[8] << 26
- carry[9] = h[9] >> 25
- h[9] -= carry[9] << 25
- // h10 = carry9
-
- // Goal: Output h[0]+...+2^255 h10-2^255 q, which is between 0 and 2^255-20.
- // Have h[0]+...+2^230 h[9] between 0 and 2^255-1;
- // evidently 2^255 h10-2^255 q = 0.
- // Goal: Output h[0]+...+2^230 h[9].
-
- s[0] = byte(h[0] >> 0)
- s[1] = byte(h[0] >> 8)
- s[2] = byte(h[0] >> 16)
- s[3] = byte((h[0] >> 24) | (h[1] << 2))
- s[4] = byte(h[1] >> 6)
- s[5] = byte(h[1] >> 14)
- s[6] = byte((h[1] >> 22) | (h[2] << 3))
- s[7] = byte(h[2] >> 5)
- s[8] = byte(h[2] >> 13)
- s[9] = byte((h[2] >> 21) | (h[3] << 5))
- s[10] = byte(h[3] >> 3)
- s[11] = byte(h[3] >> 11)
- s[12] = byte((h[3] >> 19) | (h[4] << 6))
- s[13] = byte(h[4] >> 2)
- s[14] = byte(h[4] >> 10)
- s[15] = byte(h[4] >> 18)
- s[16] = byte(h[5] >> 0)
- s[17] = byte(h[5] >> 8)
- s[18] = byte(h[5] >> 16)
- s[19] = byte((h[5] >> 24) | (h[6] << 1))
- s[20] = byte(h[6] >> 7)
- s[21] = byte(h[6] >> 15)
- s[22] = byte((h[6] >> 23) | (h[7] << 3))
- s[23] = byte(h[7] >> 5)
- s[24] = byte(h[7] >> 13)
- s[25] = byte((h[7] >> 21) | (h[8] << 4))
- s[26] = byte(h[8] >> 4)
- s[27] = byte(h[8] >> 12)
- s[28] = byte((h[8] >> 20) | (h[9] << 6))
- s[29] = byte(h[9] >> 2)
- s[30] = byte(h[9] >> 10)
- s[31] = byte(h[9] >> 18)
-}
-
-func FeIsNegative(f *FieldElement) byte {
- var s [32]byte
- FeToBytes(&s, f)
- return s[0] & 1
-}
-
-func FeIsNonZero(f *FieldElement) int32 {
- var s [32]byte
- FeToBytes(&s, f)
- var x uint8
- for _, b := range s {
- x |= b
- }
- x |= x >> 4
- x |= x >> 2
- x |= x >> 1
- return int32(x & 1)
-}
-
-// FeNeg sets h = -f
-//
-// Preconditions:
-// |f| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc.
-//
-// Postconditions:
-// |h| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc.
-func FeNeg(h, f *FieldElement) {
- h[0] = -f[0]
- h[1] = -f[1]
- h[2] = -f[2]
- h[3] = -f[3]
- h[4] = -f[4]
- h[5] = -f[5]
- h[6] = -f[6]
- h[7] = -f[7]
- h[8] = -f[8]
- h[9] = -f[9]
-}
-
-func FeCombine(h *FieldElement, h0, h1, h2, h3, h4, h5, h6, h7, h8, h9 int64) {
- var c0, c1, c2, c3, c4, c5, c6, c7, c8, c9 int64
-
- /*
- |h0| <= (1.1*1.1*2^52*(1+19+19+19+19)+1.1*1.1*2^50*(38+38+38+38+38))
- i.e. |h0| <= 1.2*2^59; narrower ranges for h2, h4, h6, h8
- |h1| <= (1.1*1.1*2^51*(1+1+19+19+19+19+19+19+19+19))
- i.e. |h1| <= 1.5*2^58; narrower ranges for h3, h5, h7, h9
- */
-
- c0 = (h0 + (1 << 25)) >> 26
- h1 += c0
- h0 -= c0 << 26
- c4 = (h4 + (1 << 25)) >> 26
- h5 += c4
- h4 -= c4 << 26
- /* |h0| <= 2^25 */
- /* |h4| <= 2^25 */
- /* |h1| <= 1.51*2^58 */
- /* |h5| <= 1.51*2^58 */
-
- c1 = (h1 + (1 << 24)) >> 25
- h2 += c1
- h1 -= c1 << 25
- c5 = (h5 + (1 << 24)) >> 25
- h6 += c5
- h5 -= c5 << 25
- /* |h1| <= 2^24; from now on fits into int32 */
- /* |h5| <= 2^24; from now on fits into int32 */
- /* |h2| <= 1.21*2^59 */
- /* |h6| <= 1.21*2^59 */
-
- c2 = (h2 + (1 << 25)) >> 26
- h3 += c2
- h2 -= c2 << 26
- c6 = (h6 + (1 << 25)) >> 26
- h7 += c6
- h6 -= c6 << 26
- /* |h2| <= 2^25; from now on fits into int32 unchanged */
- /* |h6| <= 2^25; from now on fits into int32 unchanged */
- /* |h3| <= 1.51*2^58 */
- /* |h7| <= 1.51*2^58 */
-
- c3 = (h3 + (1 << 24)) >> 25
- h4 += c3
- h3 -= c3 << 25
- c7 = (h7 + (1 << 24)) >> 25
- h8 += c7
- h7 -= c7 << 25
- /* |h3| <= 2^24; from now on fits into int32 unchanged */
- /* |h7| <= 2^24; from now on fits into int32 unchanged */
- /* |h4| <= 1.52*2^33 */
- /* |h8| <= 1.52*2^33 */
-
- c4 = (h4 + (1 << 25)) >> 26
- h5 += c4
- h4 -= c4 << 26
- c8 = (h8 + (1 << 25)) >> 26
- h9 += c8
- h8 -= c8 << 26
- /* |h4| <= 2^25; from now on fits into int32 unchanged */
- /* |h8| <= 2^25; from now on fits into int32 unchanged */
- /* |h5| <= 1.01*2^24 */
- /* |h9| <= 1.51*2^58 */
-
- c9 = (h9 + (1 << 24)) >> 25
- h0 += c9 * 19
- h9 -= c9 << 25
- /* |h9| <= 2^24; from now on fits into int32 unchanged */
- /* |h0| <= 1.8*2^37 */
-
- c0 = (h0 + (1 << 25)) >> 26
- h1 += c0
- h0 -= c0 << 26
- /* |h0| <= 2^25; from now on fits into int32 unchanged */
- /* |h1| <= 1.01*2^24 */
-
- h[0] = int32(h0)
- h[1] = int32(h1)
- h[2] = int32(h2)
- h[3] = int32(h3)
- h[4] = int32(h4)
- h[5] = int32(h5)
- h[6] = int32(h6)
- h[7] = int32(h7)
- h[8] = int32(h8)
- h[9] = int32(h9)
-}
-
-// FeMul calculates h = f * g
-// Can overlap h with f or g.
-//
-// Preconditions:
-// |f| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc.
-// |g| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc.
-//
-// Postconditions:
-// |h| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc.
-//
-// Notes on implementation strategy:
-//
-// Using schoolbook multiplication.
-// Karatsuba would save a little in some cost models.
-//
-// Most multiplications by 2 and 19 are 32-bit precomputations;
-// cheaper than 64-bit postcomputations.
-//
-// There is one remaining multiplication by 19 in the carry chain;
-// one *19 precomputation can be merged into this,
-// but the resulting data flow is considerably less clean.
-//
-// There are 12 carries below.
-// 10 of them are 2-way parallelizable and vectorizable.
-// Can get away with 11 carries, but then data flow is much deeper.
-//
-// With tighter constraints on inputs, can squeeze carries into int32.
-func FeMul(h, f, g *FieldElement) {
- f0 := int64(f[0])
- f1 := int64(f[1])
- f2 := int64(f[2])
- f3 := int64(f[3])
- f4 := int64(f[4])
- f5 := int64(f[5])
- f6 := int64(f[6])
- f7 := int64(f[7])
- f8 := int64(f[8])
- f9 := int64(f[9])
-
- f1_2 := int64(2 * f[1])
- f3_2 := int64(2 * f[3])
- f5_2 := int64(2 * f[5])
- f7_2 := int64(2 * f[7])
- f9_2 := int64(2 * f[9])
-
- g0 := int64(g[0])
- g1 := int64(g[1])
- g2 := int64(g[2])
- g3 := int64(g[3])
- g4 := int64(g[4])
- g5 := int64(g[5])
- g6 := int64(g[6])
- g7 := int64(g[7])
- g8 := int64(g[8])
- g9 := int64(g[9])
-
- g1_19 := int64(19 * g[1]) /* 1.4*2^29 */
- g2_19 := int64(19 * g[2]) /* 1.4*2^30; still ok */
- g3_19 := int64(19 * g[3])
- g4_19 := int64(19 * g[4])
- g5_19 := int64(19 * g[5])
- g6_19 := int64(19 * g[6])
- g7_19 := int64(19 * g[7])
- g8_19 := int64(19 * g[8])
- g9_19 := int64(19 * g[9])
-
- h0 := f0*g0 + f1_2*g9_19 + f2*g8_19 + f3_2*g7_19 + f4*g6_19 + f5_2*g5_19 + f6*g4_19 + f7_2*g3_19 + f8*g2_19 + f9_2*g1_19
- h1 := f0*g1 + f1*g0 + f2*g9_19 + f3*g8_19 + f4*g7_19 + f5*g6_19 + f6*g5_19 + f7*g4_19 + f8*g3_19 + f9*g2_19
- h2 := f0*g2 + f1_2*g1 + f2*g0 + f3_2*g9_19 + f4*g8_19 + f5_2*g7_19 + f6*g6_19 + f7_2*g5_19 + f8*g4_19 + f9_2*g3_19
- h3 := f0*g3 + f1*g2 + f2*g1 + f3*g0 + f4*g9_19 + f5*g8_19 + f6*g7_19 + f7*g6_19 + f8*g5_19 + f9*g4_19
- h4 := f0*g4 + f1_2*g3 + f2*g2 + f3_2*g1 + f4*g0 + f5_2*g9_19 + f6*g8_19 + f7_2*g7_19 + f8*g6_19 + f9_2*g5_19
- h5 := f0*g5 + f1*g4 + f2*g3 + f3*g2 + f4*g1 + f5*g0 + f6*g9_19 + f7*g8_19 + f8*g7_19 + f9*g6_19
- h6 := f0*g6 + f1_2*g5 + f2*g4 + f3_2*g3 + f4*g2 + f5_2*g1 + f6*g0 + f7_2*g9_19 + f8*g8_19 + f9_2*g7_19
- h7 := f0*g7 + f1*g6 + f2*g5 + f3*g4 + f4*g3 + f5*g2 + f6*g1 + f7*g0 + f8*g9_19 + f9*g8_19
- h8 := f0*g8 + f1_2*g7 + f2*g6 + f3_2*g5 + f4*g4 + f5_2*g3 + f6*g2 + f7_2*g1 + f8*g0 + f9_2*g9_19
- h9 := f0*g9 + f1*g8 + f2*g7 + f3*g6 + f4*g5 + f5*g4 + f6*g3 + f7*g2 + f8*g1 + f9*g0
-
- FeCombine(h, h0, h1, h2, h3, h4, h5, h6, h7, h8, h9)
-}
-
-func feSquare(f *FieldElement) (h0, h1, h2, h3, h4, h5, h6, h7, h8, h9 int64) {
- f0 := int64(f[0])
- f1 := int64(f[1])
- f2 := int64(f[2])
- f3 := int64(f[3])
- f4 := int64(f[4])
- f5 := int64(f[5])
- f6 := int64(f[6])
- f7 := int64(f[7])
- f8 := int64(f[8])
- f9 := int64(f[9])
- f0_2 := int64(2 * f[0])
- f1_2 := int64(2 * f[1])
- f2_2 := int64(2 * f[2])
- f3_2 := int64(2 * f[3])
- f4_2 := int64(2 * f[4])
- f5_2 := int64(2 * f[5])
- f6_2 := int64(2 * f[6])
- f7_2 := int64(2 * f[7])
- f5_38 := 38 * f5 // 1.31*2^30
- f6_19 := 19 * f6 // 1.31*2^30
- f7_38 := 38 * f7 // 1.31*2^30
- f8_19 := 19 * f8 // 1.31*2^30
- f9_38 := 38 * f9 // 1.31*2^30
-
- h0 = f0*f0 + f1_2*f9_38 + f2_2*f8_19 + f3_2*f7_38 + f4_2*f6_19 + f5*f5_38
- h1 = f0_2*f1 + f2*f9_38 + f3_2*f8_19 + f4*f7_38 + f5_2*f6_19
- h2 = f0_2*f2 + f1_2*f1 + f3_2*f9_38 + f4_2*f8_19 + f5_2*f7_38 + f6*f6_19
- h3 = f0_2*f3 + f1_2*f2 + f4*f9_38 + f5_2*f8_19 + f6*f7_38
- h4 = f0_2*f4 + f1_2*f3_2 + f2*f2 + f5_2*f9_38 + f6_2*f8_19 + f7*f7_38
- h5 = f0_2*f5 + f1_2*f4 + f2_2*f3 + f6*f9_38 + f7_2*f8_19
- h6 = f0_2*f6 + f1_2*f5_2 + f2_2*f4 + f3_2*f3 + f7_2*f9_38 + f8*f8_19
- h7 = f0_2*f7 + f1_2*f6 + f2_2*f5 + f3_2*f4 + f8*f9_38
- h8 = f0_2*f8 + f1_2*f7_2 + f2_2*f6 + f3_2*f5_2 + f4*f4 + f9*f9_38
- h9 = f0_2*f9 + f1_2*f8 + f2_2*f7 + f3_2*f6 + f4_2*f5
-
- return
-}
-
-// FeSquare calculates h = f*f. Can overlap h with f.
-//
-// Preconditions:
-// |f| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc.
-//
-// Postconditions:
-// |h| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc.
-func FeSquare(h, f *FieldElement) {
- h0, h1, h2, h3, h4, h5, h6, h7, h8, h9 := feSquare(f)
- FeCombine(h, h0, h1, h2, h3, h4, h5, h6, h7, h8, h9)
-}
-
-// FeSquare2 sets h = 2 * f * f
-//
-// Can overlap h with f.
-//
-// Preconditions:
-// |f| bounded by 1.65*2^26,1.65*2^25,1.65*2^26,1.65*2^25,etc.
-//
-// Postconditions:
-// |h| bounded by 1.01*2^25,1.01*2^24,1.01*2^25,1.01*2^24,etc.
-// See fe_mul.c for discussion of implementation strategy.
-func FeSquare2(h, f *FieldElement) {
- h0, h1, h2, h3, h4, h5, h6, h7, h8, h9 := feSquare(f)
-
- h0 += h0
- h1 += h1
- h2 += h2
- h3 += h3
- h4 += h4
- h5 += h5
- h6 += h6
- h7 += h7
- h8 += h8
- h9 += h9
-
- FeCombine(h, h0, h1, h2, h3, h4, h5, h6, h7, h8, h9)
-}
-
-func FeInvert(out, z *FieldElement) {
- var t0, t1, t2, t3 FieldElement
- var i int
-
- FeSquare(&t0, z) // 2^1
- FeSquare(&t1, &t0) // 2^2
- for i = 1; i < 2; i++ { // 2^3
- FeSquare(&t1, &t1)
- }
- FeMul(&t1, z, &t1) // 2^3 + 2^0
- FeMul(&t0, &t0, &t1) // 2^3 + 2^1 + 2^0
- FeSquare(&t2, &t0) // 2^4 + 2^2 + 2^1
- FeMul(&t1, &t1, &t2) // 2^4 + 2^3 + 2^2 + 2^1 + 2^0
- FeSquare(&t2, &t1) // 5,4,3,2,1
- for i = 1; i < 5; i++ { // 9,8,7,6,5
- FeSquare(&t2, &t2)
- }
- FeMul(&t1, &t2, &t1) // 9,8,7,6,5,4,3,2,1,0
- FeSquare(&t2, &t1) // 10..1
- for i = 1; i < 10; i++ { // 19..10
- FeSquare(&t2, &t2)
- }
- FeMul(&t2, &t2, &t1) // 19..0
- FeSquare(&t3, &t2) // 20..1
- for i = 1; i < 20; i++ { // 39..20
- FeSquare(&t3, &t3)
- }
- FeMul(&t2, &t3, &t2) // 39..0
- FeSquare(&t2, &t2) // 40..1
- for i = 1; i < 10; i++ { // 49..10
- FeSquare(&t2, &t2)
- }
- FeMul(&t1, &t2, &t1) // 49..0
- FeSquare(&t2, &t1) // 50..1
- for i = 1; i < 50; i++ { // 99..50
- FeSquare(&t2, &t2)
- }
- FeMul(&t2, &t2, &t1) // 99..0
- FeSquare(&t3, &t2) // 100..1
- for i = 1; i < 100; i++ { // 199..100
- FeSquare(&t3, &t3)
- }
- FeMul(&t2, &t3, &t2) // 199..0
- FeSquare(&t2, &t2) // 200..1
- for i = 1; i < 50; i++ { // 249..50
- FeSquare(&t2, &t2)
- }
- FeMul(&t1, &t2, &t1) // 249..0
- FeSquare(&t1, &t1) // 250..1
- for i = 1; i < 5; i++ { // 254..5
- FeSquare(&t1, &t1)
- }
- FeMul(out, &t1, &t0) // 254..5,3,1,0
-}
-
-func fePow22523(out, z *FieldElement) {
- var t0, t1, t2 FieldElement
- var i int
-
- FeSquare(&t0, z)
- for i = 1; i < 1; i++ {
- FeSquare(&t0, &t0)
- }
- FeSquare(&t1, &t0)
- for i = 1; i < 2; i++ {
- FeSquare(&t1, &t1)
- }
- FeMul(&t1, z, &t1)
- FeMul(&t0, &t0, &t1)
- FeSquare(&t0, &t0)
- for i = 1; i < 1; i++ {
- FeSquare(&t0, &t0)
- }
- FeMul(&t0, &t1, &t0)
- FeSquare(&t1, &t0)
- for i = 1; i < 5; i++ {
- FeSquare(&t1, &t1)
- }
- FeMul(&t0, &t1, &t0)
- FeSquare(&t1, &t0)
- for i = 1; i < 10; i++ {
- FeSquare(&t1, &t1)
- }
- FeMul(&t1, &t1, &t0)
- FeSquare(&t2, &t1)
- for i = 1; i < 20; i++ {
- FeSquare(&t2, &t2)
- }
- FeMul(&t1, &t2, &t1)
- FeSquare(&t1, &t1)
- for i = 1; i < 10; i++ {
- FeSquare(&t1, &t1)
- }
- FeMul(&t0, &t1, &t0)
- FeSquare(&t1, &t0)
- for i = 1; i < 50; i++ {
- FeSquare(&t1, &t1)
- }
- FeMul(&t1, &t1, &t0)
- FeSquare(&t2, &t1)
- for i = 1; i < 100; i++ {
- FeSquare(&t2, &t2)
- }
- FeMul(&t1, &t2, &t1)
- FeSquare(&t1, &t1)
- for i = 1; i < 50; i++ {
- FeSquare(&t1, &t1)
- }
- FeMul(&t0, &t1, &t0)
- FeSquare(&t0, &t0)
- for i = 1; i < 2; i++ {
- FeSquare(&t0, &t0)
- }
- FeMul(out, &t0, z)
-}
-
-// Group elements are members of the elliptic curve -x^2 + y^2 = 1 + d * x^2 *
-// y^2 where d = -121665/121666.
-//
-// Several representations are used:
-// ProjectiveGroupElement: (X:Y:Z) satisfying x=X/Z, y=Y/Z
-// ExtendedGroupElement: (X:Y:Z:T) satisfying x=X/Z, y=Y/Z, XY=ZT
-// CompletedGroupElement: ((X:Z),(Y:T)) satisfying x=X/Z, y=Y/T
-// PreComputedGroupElement: (y+x,y-x,2dxy)
-
-type ProjectiveGroupElement struct {
- X, Y, Z FieldElement
-}
-
-type ExtendedGroupElement struct {
- X, Y, Z, T FieldElement
-}
-
-type CompletedGroupElement struct {
- X, Y, Z, T FieldElement
-}
-
-type PreComputedGroupElement struct {
- yPlusX, yMinusX, xy2d FieldElement
-}
-
-type CachedGroupElement struct {
- yPlusX, yMinusX, Z, T2d FieldElement
-}
-
-func (p *ProjectiveGroupElement) Zero() {
- FeZero(&p.X)
- FeOne(&p.Y)
- FeOne(&p.Z)
-}
-
-func (p *ProjectiveGroupElement) Double(r *CompletedGroupElement) {
- var t0 FieldElement
-
- FeSquare(&r.X, &p.X)
- FeSquare(&r.Z, &p.Y)
- FeSquare2(&r.T, &p.Z)
- FeAdd(&r.Y, &p.X, &p.Y)
- FeSquare(&t0, &r.Y)
- FeAdd(&r.Y, &r.Z, &r.X)
- FeSub(&r.Z, &r.Z, &r.X)
- FeSub(&r.X, &t0, &r.Y)
- FeSub(&r.T, &r.T, &r.Z)
-}
-
-func (p *ProjectiveGroupElement) ToBytes(s *[32]byte) {
- var recip, x, y FieldElement
-
- FeInvert(&recip, &p.Z)
- FeMul(&x, &p.X, &recip)
- FeMul(&y, &p.Y, &recip)
- FeToBytes(s, &y)
- s[31] ^= FeIsNegative(&x) << 7
-}
-
-func (p *ExtendedGroupElement) Zero() {
- FeZero(&p.X)
- FeOne(&p.Y)
- FeOne(&p.Z)
- FeZero(&p.T)
-}
-
-func (p *ExtendedGroupElement) Double(r *CompletedGroupElement) {
- var q ProjectiveGroupElement
- p.ToProjective(&q)
- q.Double(r)
-}
-
-func (p *ExtendedGroupElement) ToCached(r *CachedGroupElement) {
- FeAdd(&r.yPlusX, &p.Y, &p.X)
- FeSub(&r.yMinusX, &p.Y, &p.X)
- FeCopy(&r.Z, &p.Z)
- FeMul(&r.T2d, &p.T, &d2)
-}
-
-func (p *ExtendedGroupElement) ToProjective(r *ProjectiveGroupElement) {
- FeCopy(&r.X, &p.X)
- FeCopy(&r.Y, &p.Y)
- FeCopy(&r.Z, &p.Z)
-}
-
-func (p *ExtendedGroupElement) ToBytes(s *[32]byte) {
- var recip, x, y FieldElement
-
- FeInvert(&recip, &p.Z)
- FeMul(&x, &p.X, &recip)
- FeMul(&y, &p.Y, &recip)
- FeToBytes(s, &y)
- s[31] ^= FeIsNegative(&x) << 7
-}
-
-func (p *ExtendedGroupElement) FromBytes(s *[32]byte) bool {
- var u, v, v3, vxx, check FieldElement
-
- FeFromBytes(&p.Y, s)
- FeOne(&p.Z)
- FeSquare(&u, &p.Y)
- FeMul(&v, &u, &d)
- FeSub(&u, &u, &p.Z) // y = y^2-1
- FeAdd(&v, &v, &p.Z) // v = dy^2+1
-
- FeSquare(&v3, &v)
- FeMul(&v3, &v3, &v) // v3 = v^3
- FeSquare(&p.X, &v3)
- FeMul(&p.X, &p.X, &v)
- FeMul(&p.X, &p.X, &u) // x = uv^7
-
- fePow22523(&p.X, &p.X) // x = (uv^7)^((q-5)/8)
- FeMul(&p.X, &p.X, &v3)
- FeMul(&p.X, &p.X, &u) // x = uv^3(uv^7)^((q-5)/8)
-
- var tmpX, tmp2 [32]byte
-
- FeSquare(&vxx, &p.X)
- FeMul(&vxx, &vxx, &v)
- FeSub(&check, &vxx, &u) // vx^2-u
- if FeIsNonZero(&check) == 1 {
- FeAdd(&check, &vxx, &u) // vx^2+u
- if FeIsNonZero(&check) == 1 {
- return false
- }
- FeMul(&p.X, &p.X, &SqrtM1)
-
- FeToBytes(&tmpX, &p.X)
- for i, v := range tmpX {
- tmp2[31-i] = v
- }
- }
-
- if FeIsNegative(&p.X) != (s[31] >> 7) {
- FeNeg(&p.X, &p.X)
- }
-
- FeMul(&p.T, &p.X, &p.Y)
- return true
-}
-
-func (p *CompletedGroupElement) ToProjective(r *ProjectiveGroupElement) {
- FeMul(&r.X, &p.X, &p.T)
- FeMul(&r.Y, &p.Y, &p.Z)
- FeMul(&r.Z, &p.Z, &p.T)
-}
-
-func (p *CompletedGroupElement) ToExtended(r *ExtendedGroupElement) {
- FeMul(&r.X, &p.X, &p.T)
- FeMul(&r.Y, &p.Y, &p.Z)
- FeMul(&r.Z, &p.Z, &p.T)
- FeMul(&r.T, &p.X, &p.Y)
-}
-
-func (p *PreComputedGroupElement) Zero() {
- FeOne(&p.yPlusX)
- FeOne(&p.yMinusX)
- FeZero(&p.xy2d)
-}
-
-func geAdd(r *CompletedGroupElement, p *ExtendedGroupElement, q *CachedGroupElement) {
- var t0 FieldElement
-
- FeAdd(&r.X, &p.Y, &p.X)
- FeSub(&r.Y, &p.Y, &p.X)
- FeMul(&r.Z, &r.X, &q.yPlusX)
- FeMul(&r.Y, &r.Y, &q.yMinusX)
- FeMul(&r.T, &q.T2d, &p.T)
- FeMul(&r.X, &p.Z, &q.Z)
- FeAdd(&t0, &r.X, &r.X)
- FeSub(&r.X, &r.Z, &r.Y)
- FeAdd(&r.Y, &r.Z, &r.Y)
- FeAdd(&r.Z, &t0, &r.T)
- FeSub(&r.T, &t0, &r.T)
-}
-
-func geSub(r *CompletedGroupElement, p *ExtendedGroupElement, q *CachedGroupElement) {
- var t0 FieldElement
-
- FeAdd(&r.X, &p.Y, &p.X)
- FeSub(&r.Y, &p.Y, &p.X)
- FeMul(&r.Z, &r.X, &q.yMinusX)
- FeMul(&r.Y, &r.Y, &q.yPlusX)
- FeMul(&r.T, &q.T2d, &p.T)
- FeMul(&r.X, &p.Z, &q.Z)
- FeAdd(&t0, &r.X, &r.X)
- FeSub(&r.X, &r.Z, &r.Y)
- FeAdd(&r.Y, &r.Z, &r.Y)
- FeSub(&r.Z, &t0, &r.T)
- FeAdd(&r.T, &t0, &r.T)
-}
-
-func geMixedAdd(r *CompletedGroupElement, p *ExtendedGroupElement, q *PreComputedGroupElement) {
- var t0 FieldElement
-
- FeAdd(&r.X, &p.Y, &p.X)
- FeSub(&r.Y, &p.Y, &p.X)
- FeMul(&r.Z, &r.X, &q.yPlusX)
- FeMul(&r.Y, &r.Y, &q.yMinusX)
- FeMul(&r.T, &q.xy2d, &p.T)
- FeAdd(&t0, &p.Z, &p.Z)
- FeSub(&r.X, &r.Z, &r.Y)
- FeAdd(&r.Y, &r.Z, &r.Y)
- FeAdd(&r.Z, &t0, &r.T)
- FeSub(&r.T, &t0, &r.T)
-}
-
-func geMixedSub(r *CompletedGroupElement, p *ExtendedGroupElement, q *PreComputedGroupElement) {
- var t0 FieldElement
-
- FeAdd(&r.X, &p.Y, &p.X)
- FeSub(&r.Y, &p.Y, &p.X)
- FeMul(&r.Z, &r.X, &q.yMinusX)
- FeMul(&r.Y, &r.Y, &q.yPlusX)
- FeMul(&r.T, &q.xy2d, &p.T)
- FeAdd(&t0, &p.Z, &p.Z)
- FeSub(&r.X, &r.Z, &r.Y)
- FeAdd(&r.Y, &r.Z, &r.Y)
- FeSub(&r.Z, &t0, &r.T)
- FeAdd(&r.T, &t0, &r.T)
-}
-
-func slide(r *[256]int8, a *[32]byte) {
- for i := range r {
- r[i] = int8(1 & (a[i>>3] >> uint(i&7)))
- }
-
- for i := range r {
- if r[i] != 0 {
- for b := 1; b <= 6 && i+b < 256; b++ {
- if r[i+b] != 0 {
- if r[i]+(r[i+b]<<uint(b)) <= 15 {
- r[i] += r[i+b] << uint(b)
- r[i+b] = 0
- } else if r[i]-(r[i+b]<<uint(b)) >= -15 {
- r[i] -= r[i+b] << uint(b)
- for k := i + b; k < 256; k++ {
- if r[k] == 0 {
- r[k] = 1
- break
- }
- r[k] = 0
- }
- } else {
- break
- }
- }
- }
- }
- }
-}
-
-// GeDoubleScalarMultVartime sets r = a*A + b*B
-// where a = a[0]+256*a[1]+...+256^31 a[31].
-// and b = b[0]+256*b[1]+...+256^31 b[31].
-// B is the Ed25519 base point (x,4/5) with x positive.
-func GeDoubleScalarMultVartime(r *ProjectiveGroupElement, a *[32]byte, A *ExtendedGroupElement, b *[32]byte) {
- var aSlide, bSlide [256]int8
- var Ai [8]CachedGroupElement // A,3A,5A,7A,9A,11A,13A,15A
- var t CompletedGroupElement
- var u, A2 ExtendedGroupElement
- var i int
-
- slide(&aSlide, a)
- slide(&bSlide, b)
-
- A.ToCached(&Ai[0])
- A.Double(&t)
- t.ToExtended(&A2)
-
- for i := 0; i < 7; i++ {
- geAdd(&t, &A2, &Ai[i])
- t.ToExtended(&u)
- u.ToCached(&Ai[i+1])
- }
-
- r.Zero()
-
- for i = 255; i >= 0; i-- {
- if aSlide[i] != 0 || bSlide[i] != 0 {
- break
- }
- }
-
- for ; i >= 0; i-- {
- r.Double(&t)
-
- if aSlide[i] > 0 {
- t.ToExtended(&u)
- geAdd(&t, &u, &Ai[aSlide[i]/2])
- } else if aSlide[i] < 0 {
- t.ToExtended(&u)
- geSub(&t, &u, &Ai[(-aSlide[i])/2])
- }
-
- if bSlide[i] > 0 {
- t.ToExtended(&u)
- geMixedAdd(&t, &u, &bi[bSlide[i]/2])
- } else if bSlide[i] < 0 {
- t.ToExtended(&u)
- geMixedSub(&t, &u, &bi[(-bSlide[i])/2])
- }
-
- t.ToProjective(r)
- }
-}
-
-// equal returns 1 if b == c and 0 otherwise, assuming that b and c are
-// non-negative.
-func equal(b, c int32) int32 {
- x := uint32(b ^ c)
- x--
- return int32(x >> 31)
-}
-
-// negative returns 1 if b < 0 and 0 otherwise.
-func negative(b int32) int32 {
- return (b >> 31) & 1
-}
-
-func PreComputedGroupElementCMove(t, u *PreComputedGroupElement, b int32) {
- FeCMove(&t.yPlusX, &u.yPlusX, b)
- FeCMove(&t.yMinusX, &u.yMinusX, b)
- FeCMove(&t.xy2d, &u.xy2d, b)
-}
-
-func selectPoint(t *PreComputedGroupElement, pos int32, b int32) {
- var minusT PreComputedGroupElement
- bNegative := negative(b)
- bAbs := b - (((-bNegative) & b) << 1)
-
- t.Zero()
- for i := int32(0); i < 8; i++ {
- PreComputedGroupElementCMove(t, &base[pos][i], equal(bAbs, i+1))
- }
- FeCopy(&minusT.yPlusX, &t.yMinusX)
- FeCopy(&minusT.yMinusX, &t.yPlusX)
- FeNeg(&minusT.xy2d, &t.xy2d)
- PreComputedGroupElementCMove(t, &minusT, bNegative)
-}
-
-// GeScalarMultBase computes h = a*B, where
-// a = a[0]+256*a[1]+...+256^31 a[31]
-// B is the Ed25519 base point (x,4/5) with x positive.
-//
-// Preconditions:
-// a[31] <= 127
-func GeScalarMultBase(h *ExtendedGroupElement, a *[32]byte) {
- var e [64]int8
-
- for i, v := range a {
- e[2*i] = int8(v & 15)
- e[2*i+1] = int8((v >> 4) & 15)
- }
-
- // each e[i] is between 0 and 15 and e[63] is between 0 and 7.
-
- carry := int8(0)
- for i := 0; i < 63; i++ {
- e[i] += carry
- carry = (e[i] + 8) >> 4
- e[i] -= carry << 4
- }
- e[63] += carry
- // each e[i] is between -8 and 8.
-
- h.Zero()
- var t PreComputedGroupElement
- var r CompletedGroupElement
- for i := int32(1); i < 64; i += 2 {
- selectPoint(&t, i/2, int32(e[i]))
- geMixedAdd(&r, h, &t)
- r.ToExtended(h)
- }
-
- var s ProjectiveGroupElement
-
- h.Double(&r)
- r.ToProjective(&s)
- s.Double(&r)
- r.ToProjective(&s)
- s.Double(&r)
- r.ToProjective(&s)
- s.Double(&r)
- r.ToExtended(h)
-
- for i := int32(0); i < 64; i += 2 {
- selectPoint(&t, i/2, int32(e[i]))
- geMixedAdd(&r, h, &t)
- r.ToExtended(h)
- }
-}
-
-// The scalars are GF(2^252 + 27742317777372353535851937790883648493).
-
-// Input:
-// a[0]+256*a[1]+...+256^31*a[31] = a
-// b[0]+256*b[1]+...+256^31*b[31] = b
-// c[0]+256*c[1]+...+256^31*c[31] = c
-//
-// Output:
-// s[0]+256*s[1]+...+256^31*s[31] = (ab+c) mod l
-// where l = 2^252 + 27742317777372353535851937790883648493.
-func ScMulAdd(s, a, b, c *[32]byte) {
- a0 := 2097151 & load3(a[:])
- a1 := 2097151 & (load4(a[2:]) >> 5)
- a2 := 2097151 & (load3(a[5:]) >> 2)
- a3 := 2097151 & (load4(a[7:]) >> 7)
- a4 := 2097151 & (load4(a[10:]) >> 4)
- a5 := 2097151 & (load3(a[13:]) >> 1)
- a6 := 2097151 & (load4(a[15:]) >> 6)
- a7 := 2097151 & (load3(a[18:]) >> 3)
- a8 := 2097151 & load3(a[21:])
- a9 := 2097151 & (load4(a[23:]) >> 5)
- a10 := 2097151 & (load3(a[26:]) >> 2)
- a11 := (load4(a[28:]) >> 7)
- b0 := 2097151 & load3(b[:])
- b1 := 2097151 & (load4(b[2:]) >> 5)
- b2 := 2097151 & (load3(b[5:]) >> 2)
- b3 := 2097151 & (load4(b[7:]) >> 7)
- b4 := 2097151 & (load4(b[10:]) >> 4)
- b5 := 2097151 & (load3(b[13:]) >> 1)
- b6 := 2097151 & (load4(b[15:]) >> 6)
- b7 := 2097151 & (load3(b[18:]) >> 3)
- b8 := 2097151 & load3(b[21:])
- b9 := 2097151 & (load4(b[23:]) >> 5)
- b10 := 2097151 & (load3(b[26:]) >> 2)
- b11 := (load4(b[28:]) >> 7)
- c0 := 2097151 & load3(c[:])
- c1 := 2097151 & (load4(c[2:]) >> 5)
- c2 := 2097151 & (load3(c[5:]) >> 2)
- c3 := 2097151 & (load4(c[7:]) >> 7)
- c4 := 2097151 & (load4(c[10:]) >> 4)
- c5 := 2097151 & (load3(c[13:]) >> 1)
- c6 := 2097151 & (load4(c[15:]) >> 6)
- c7 := 2097151 & (load3(c[18:]) >> 3)
- c8 := 2097151 & load3(c[21:])
- c9 := 2097151 & (load4(c[23:]) >> 5)
- c10 := 2097151 & (load3(c[26:]) >> 2)
- c11 := (load4(c[28:]) >> 7)
- var carry [23]int64
-
- s0 := c0 + a0*b0
- s1 := c1 + a0*b1 + a1*b0
- s2 := c2 + a0*b2 + a1*b1 + a2*b0
- s3 := c3 + a0*b3 + a1*b2 + a2*b1 + a3*b0
- s4 := c4 + a0*b4 + a1*b3 + a2*b2 + a3*b1 + a4*b0
- s5 := c5 + a0*b5 + a1*b4 + a2*b3 + a3*b2 + a4*b1 + a5*b0
- s6 := c6 + a0*b6 + a1*b5 + a2*b4 + a3*b3 + a4*b2 + a5*b1 + a6*b0
- s7 := c7 + a0*b7 + a1*b6 + a2*b5 + a3*b4 + a4*b3 + a5*b2 + a6*b1 + a7*b0
- s8 := c8 + a0*b8 + a1*b7 + a2*b6 + a3*b5 + a4*b4 + a5*b3 + a6*b2 + a7*b1 + a8*b0
- s9 := c9 + a0*b9 + a1*b8 + a2*b7 + a3*b6 + a4*b5 + a5*b4 + a6*b3 + a7*b2 + a8*b1 + a9*b0
- s10 := c10 + a0*b10 + a1*b9 + a2*b8 + a3*b7 + a4*b6 + a5*b5 + a6*b4 + a7*b3 + a8*b2 + a9*b1 + a10*b0
- s11 := c11 + a0*b11 + a1*b10 + a2*b9 + a3*b8 + a4*b7 + a5*b6 + a6*b5 + a7*b4 + a8*b3 + a9*b2 + a10*b1 + a11*b0
- s12 := a1*b11 + a2*b10 + a3*b9 + a4*b8 + a5*b7 + a6*b6 + a7*b5 + a8*b4 + a9*b3 + a10*b2 + a11*b1
- s13 := a2*b11 + a3*b10 + a4*b9 + a5*b8 + a6*b7 + a7*b6 + a8*b5 + a9*b4 + a10*b3 + a11*b2
- s14 := a3*b11 + a4*b10 + a5*b9 + a6*b8 + a7*b7 + a8*b6 + a9*b5 + a10*b4 + a11*b3
- s15 := a4*b11 + a5*b10 + a6*b9 + a7*b8 + a8*b7 + a9*b6 + a10*b5 + a11*b4
- s16 := a5*b11 + a6*b10 + a7*b9 + a8*b8 + a9*b7 + a10*b6 + a11*b5
- s17 := a6*b11 + a7*b10 + a8*b9 + a9*b8 + a10*b7 + a11*b6
- s18 := a7*b11 + a8*b10 + a9*b9 + a10*b8 + a11*b7
- s19 := a8*b11 + a9*b10 + a10*b9 + a11*b8
- s20 := a9*b11 + a10*b10 + a11*b9
- s21 := a10*b11 + a11*b10
- s22 := a11 * b11
- s23 := int64(0)
-
- carry[0] = (s0 + (1 << 20)) >> 21
- s1 += carry[0]
- s0 -= carry[0] << 21
- carry[2] = (s2 + (1 << 20)) >> 21
- s3 += carry[2]
- s2 -= carry[2] << 21
- carry[4] = (s4 + (1 << 20)) >> 21
- s5 += carry[4]
- s4 -= carry[4] << 21
- carry[6] = (s6 + (1 << 20)) >> 21
- s7 += carry[6]
- s6 -= carry[6] << 21
- carry[8] = (s8 + (1 << 20)) >> 21
- s9 += carry[8]
- s8 -= carry[8] << 21
- carry[10] = (s10 + (1 << 20)) >> 21
- s11 += carry[10]
- s10 -= carry[10] << 21
- carry[12] = (s12 + (1 << 20)) >> 21
- s13 += carry[12]
- s12 -= carry[12] << 21
- carry[14] = (s14 + (1 << 20)) >> 21
- s15 += carry[14]
- s14 -= carry[14] << 21
- carry[16] = (s16 + (1 << 20)) >> 21
- s17 += carry[16]
- s16 -= carry[16] << 21
- carry[18] = (s18 + (1 << 20)) >> 21
- s19 += carry[18]
- s18 -= carry[18] << 21
- carry[20] = (s20 + (1 << 20)) >> 21
- s21 += carry[20]
- s20 -= carry[20] << 21
- carry[22] = (s22 + (1 << 20)) >> 21
- s23 += carry[22]
- s22 -= carry[22] << 21
-
- carry[1] = (s1 + (1 << 20)) >> 21
- s2 += carry[1]
- s1 -= carry[1] << 21
- carry[3] = (s3 + (1 << 20)) >> 21
- s4 += carry[3]
- s3 -= carry[3] << 21
- carry[5] = (s5 + (1 << 20)) >> 21
- s6 += carry[5]
- s5 -= carry[5] << 21
- carry[7] = (s7 + (1 << 20)) >> 21
- s8 += carry[7]
- s7 -= carry[7] << 21
- carry[9] = (s9 + (1 << 20)) >> 21
- s10 += carry[9]
- s9 -= carry[9] << 21
- carry[11] = (s11 + (1 << 20)) >> 21
- s12 += carry[11]
- s11 -= carry[11] << 21
- carry[13] = (s13 + (1 << 20)) >> 21
- s14 += carry[13]
- s13 -= carry[13] << 21
- carry[15] = (s15 + (1 << 20)) >> 21
- s16 += carry[15]
- s15 -= carry[15] << 21
- carry[17] = (s17 + (1 << 20)) >> 21
- s18 += carry[17]
- s17 -= carry[17] << 21
- carry[19] = (s19 + (1 << 20)) >> 21
- s20 += carry[19]
- s19 -= carry[19] << 21
- carry[21] = (s21 + (1 << 20)) >> 21
- s22 += carry[21]
- s21 -= carry[21] << 21
-
- s11 += s23 * 666643
- s12 += s23 * 470296
- s13 += s23 * 654183
- s14 -= s23 * 997805
- s15 += s23 * 136657
- s16 -= s23 * 683901
- s23 = 0
-
- s10 += s22 * 666643
- s11 += s22 * 470296
- s12 += s22 * 654183
- s13 -= s22 * 997805
- s14 += s22 * 136657
- s15 -= s22 * 683901
- s22 = 0
-
- s9 += s21 * 666643
- s10 += s21 * 470296
- s11 += s21 * 654183
- s12 -= s21 * 997805
- s13 += s21 * 136657
- s14 -= s21 * 683901
- s21 = 0
-
- s8 += s20 * 666643
- s9 += s20 * 470296
- s10 += s20 * 654183
- s11 -= s20 * 997805
- s12 += s20 * 136657
- s13 -= s20 * 683901
- s20 = 0
-
- s7 += s19 * 666643
- s8 += s19 * 470296
- s9 += s19 * 654183
- s10 -= s19 * 997805
- s11 += s19 * 136657
- s12 -= s19 * 683901
- s19 = 0
-
- s6 += s18 * 666643
- s7 += s18 * 470296
- s8 += s18 * 654183
- s9 -= s18 * 997805
- s10 += s18 * 136657
- s11 -= s18 * 683901
- s18 = 0
-
- carry[6] = (s6 + (1 << 20)) >> 21
- s7 += carry[6]
- s6 -= carry[6] << 21
- carry[8] = (s8 + (1 << 20)) >> 21
- s9 += carry[8]
- s8 -= carry[8] << 21
- carry[10] = (s10 + (1 << 20)) >> 21
- s11 += carry[10]
- s10 -= carry[10] << 21
- carry[12] = (s12 + (1 << 20)) >> 21
- s13 += carry[12]
- s12 -= carry[12] << 21
- carry[14] = (s14 + (1 << 20)) >> 21
- s15 += carry[14]
- s14 -= carry[14] << 21
- carry[16] = (s16 + (1 << 20)) >> 21
- s17 += carry[16]
- s16 -= carry[16] << 21
-
- carry[7] = (s7 + (1 << 20)) >> 21
- s8 += carry[7]
- s7 -= carry[7] << 21
- carry[9] = (s9 + (1 << 20)) >> 21
- s10 += carry[9]
- s9 -= carry[9] << 21
- carry[11] = (s11 + (1 << 20)) >> 21
- s12 += carry[11]
- s11 -= carry[11] << 21
- carry[13] = (s13 + (1 << 20)) >> 21
- s14 += carry[13]
- s13 -= carry[13] << 21
- carry[15] = (s15 + (1 << 20)) >> 21
- s16 += carry[15]
- s15 -= carry[15] << 21
-
- s5 += s17 * 666643
- s6 += s17 * 470296
- s7 += s17 * 654183
- s8 -= s17 * 997805
- s9 += s17 * 136657
- s10 -= s17 * 683901
- s17 = 0
-
- s4 += s16 * 666643
- s5 += s16 * 470296
- s6 += s16 * 654183
- s7 -= s16 * 997805
- s8 += s16 * 136657
- s9 -= s16 * 683901
- s16 = 0
-
- s3 += s15 * 666643
- s4 += s15 * 470296
- s5 += s15 * 654183
- s6 -= s15 * 997805
- s7 += s15 * 136657
- s8 -= s15 * 683901
- s15 = 0
-
- s2 += s14 * 666643
- s3 += s14 * 470296
- s4 += s14 * 654183
- s5 -= s14 * 997805
- s6 += s14 * 136657
- s7 -= s14 * 683901
- s14 = 0
-
- s1 += s13 * 666643
- s2 += s13 * 470296
- s3 += s13 * 654183
- s4 -= s13 * 997805
- s5 += s13 * 136657
- s6 -= s13 * 683901
- s13 = 0
-
- s0 += s12 * 666643
- s1 += s12 * 470296
- s2 += s12 * 654183
- s3 -= s12 * 997805
- s4 += s12 * 136657
- s5 -= s12 * 683901
- s12 = 0
-
- carry[0] = (s0 + (1 << 20)) >> 21
- s1 += carry[0]
- s0 -= carry[0] << 21
- carry[2] = (s2 + (1 << 20)) >> 21
- s3 += carry[2]
- s2 -= carry[2] << 21
- carry[4] = (s4 + (1 << 20)) >> 21
- s5 += carry[4]
- s4 -= carry[4] << 21
- carry[6] = (s6 + (1 << 20)) >> 21
- s7 += carry[6]
- s6 -= carry[6] << 21
- carry[8] = (s8 + (1 << 20)) >> 21
- s9 += carry[8]
- s8 -= carry[8] << 21
- carry[10] = (s10 + (1 << 20)) >> 21
- s11 += carry[10]
- s10 -= carry[10] << 21
-
- carry[1] = (s1 + (1 << 20)) >> 21
- s2 += carry[1]
- s1 -= carry[1] << 21
- carry[3] = (s3 + (1 << 20)) >> 21
- s4 += carry[3]
- s3 -= carry[3] << 21
- carry[5] = (s5 + (1 << 20)) >> 21
- s6 += carry[5]
- s5 -= carry[5] << 21
- carry[7] = (s7 + (1 << 20)) >> 21
- s8 += carry[7]
- s7 -= carry[7] << 21
- carry[9] = (s9 + (1 << 20)) >> 21
- s10 += carry[9]
- s9 -= carry[9] << 21
- carry[11] = (s11 + (1 << 20)) >> 21
- s12 += carry[11]
- s11 -= carry[11] << 21
-
- s0 += s12 * 666643
- s1 += s12 * 470296
- s2 += s12 * 654183
- s3 -= s12 * 997805
- s4 += s12 * 136657
- s5 -= s12 * 683901
- s12 = 0
-
- carry[0] = s0 >> 21
- s1 += carry[0]
- s0 -= carry[0] << 21
- carry[1] = s1 >> 21
- s2 += carry[1]
- s1 -= carry[1] << 21
- carry[2] = s2 >> 21
- s3 += carry[2]
- s2 -= carry[2] << 21
- carry[3] = s3 >> 21
- s4 += carry[3]
- s3 -= carry[3] << 21
- carry[4] = s4 >> 21
- s5 += carry[4]
- s4 -= carry[4] << 21
- carry[5] = s5 >> 21
- s6 += carry[5]
- s5 -= carry[5] << 21
- carry[6] = s6 >> 21
- s7 += carry[6]
- s6 -= carry[6] << 21
- carry[7] = s7 >> 21
- s8 += carry[7]
- s7 -= carry[7] << 21
- carry[8] = s8 >> 21
- s9 += carry[8]
- s8 -= carry[8] << 21
- carry[9] = s9 >> 21
- s10 += carry[9]
- s9 -= carry[9] << 21
- carry[10] = s10 >> 21
- s11 += carry[10]
- s10 -= carry[10] << 21
- carry[11] = s11 >> 21
- s12 += carry[11]
- s11 -= carry[11] << 21
-
- s0 += s12 * 666643
- s1 += s12 * 470296
- s2 += s12 * 654183
- s3 -= s12 * 997805
- s4 += s12 * 136657
- s5 -= s12 * 683901
- s12 = 0
-
- carry[0] = s0 >> 21
- s1 += carry[0]
- s0 -= carry[0] << 21
- carry[1] = s1 >> 21
- s2 += carry[1]
- s1 -= carry[1] << 21
- carry[2] = s2 >> 21
- s3 += carry[2]
- s2 -= carry[2] << 21
- carry[3] = s3 >> 21
- s4 += carry[3]
- s3 -= carry[3] << 21
- carry[4] = s4 >> 21
- s5 += carry[4]
- s4 -= carry[4] << 21
- carry[5] = s5 >> 21
- s6 += carry[5]
- s5 -= carry[5] << 21
- carry[6] = s6 >> 21
- s7 += carry[6]
- s6 -= carry[6] << 21
- carry[7] = s7 >> 21
- s8 += carry[7]
- s7 -= carry[7] << 21
- carry[8] = s8 >> 21
- s9 += carry[8]
- s8 -= carry[8] << 21
- carry[9] = s9 >> 21
- s10 += carry[9]
- s9 -= carry[9] << 21
- carry[10] = s10 >> 21
- s11 += carry[10]
- s10 -= carry[10] << 21
-
- s[0] = byte(s0 >> 0)
- s[1] = byte(s0 >> 8)
- s[2] = byte((s0 >> 16) | (s1 << 5))
- s[3] = byte(s1 >> 3)
- s[4] = byte(s1 >> 11)
- s[5] = byte((s1 >> 19) | (s2 << 2))
- s[6] = byte(s2 >> 6)
- s[7] = byte((s2 >> 14) | (s3 << 7))
- s[8] = byte(s3 >> 1)
- s[9] = byte(s3 >> 9)
- s[10] = byte((s3 >> 17) | (s4 << 4))
- s[11] = byte(s4 >> 4)
- s[12] = byte(s4 >> 12)
- s[13] = byte((s4 >> 20) | (s5 << 1))
- s[14] = byte(s5 >> 7)
- s[15] = byte((s5 >> 15) | (s6 << 6))
- s[16] = byte(s6 >> 2)
- s[17] = byte(s6 >> 10)
- s[18] = byte((s6 >> 18) | (s7 << 3))
- s[19] = byte(s7 >> 5)
- s[20] = byte(s7 >> 13)
- s[21] = byte(s8 >> 0)
- s[22] = byte(s8 >> 8)
- s[23] = byte((s8 >> 16) | (s9 << 5))
- s[24] = byte(s9 >> 3)
- s[25] = byte(s9 >> 11)
- s[26] = byte((s9 >> 19) | (s10 << 2))
- s[27] = byte(s10 >> 6)
- s[28] = byte((s10 >> 14) | (s11 << 7))
- s[29] = byte(s11 >> 1)
- s[30] = byte(s11 >> 9)
- s[31] = byte(s11 >> 17)
-}
-
-// Input:
-// s[0]+256*s[1]+...+256^63*s[63] = s
-//
-// Output:
-// s[0]+256*s[1]+...+256^31*s[31] = s mod l
-// where l = 2^252 + 27742317777372353535851937790883648493.
-func ScReduce(out *[32]byte, s *[64]byte) {
- s0 := 2097151 & load3(s[:])
- s1 := 2097151 & (load4(s[2:]) >> 5)
- s2 := 2097151 & (load3(s[5:]) >> 2)
- s3 := 2097151 & (load4(s[7:]) >> 7)
- s4 := 2097151 & (load4(s[10:]) >> 4)
- s5 := 2097151 & (load3(s[13:]) >> 1)
- s6 := 2097151 & (load4(s[15:]) >> 6)
- s7 := 2097151 & (load3(s[18:]) >> 3)
- s8 := 2097151 & load3(s[21:])
- s9 := 2097151 & (load4(s[23:]) >> 5)
- s10 := 2097151 & (load3(s[26:]) >> 2)
- s11 := 2097151 & (load4(s[28:]) >> 7)
- s12 := 2097151 & (load4(s[31:]) >> 4)
- s13 := 2097151 & (load3(s[34:]) >> 1)
- s14 := 2097151 & (load4(s[36:]) >> 6)
- s15 := 2097151 & (load3(s[39:]) >> 3)
- s16 := 2097151 & load3(s[42:])
- s17 := 2097151 & (load4(s[44:]) >> 5)
- s18 := 2097151 & (load3(s[47:]) >> 2)
- s19 := 2097151 & (load4(s[49:]) >> 7)
- s20 := 2097151 & (load4(s[52:]) >> 4)
- s21 := 2097151 & (load3(s[55:]) >> 1)
- s22 := 2097151 & (load4(s[57:]) >> 6)
- s23 := (load4(s[60:]) >> 3)
-
- s11 += s23 * 666643
- s12 += s23 * 470296
- s13 += s23 * 654183
- s14 -= s23 * 997805
- s15 += s23 * 136657
- s16 -= s23 * 683901
- s23 = 0
-
- s10 += s22 * 666643
- s11 += s22 * 470296
- s12 += s22 * 654183
- s13 -= s22 * 997805
- s14 += s22 * 136657
- s15 -= s22 * 683901
- s22 = 0
-
- s9 += s21 * 666643
- s10 += s21 * 470296
- s11 += s21 * 654183
- s12 -= s21 * 997805
- s13 += s21 * 136657
- s14 -= s21 * 683901
- s21 = 0
-
- s8 += s20 * 666643
- s9 += s20 * 470296
- s10 += s20 * 654183
- s11 -= s20 * 997805
- s12 += s20 * 136657
- s13 -= s20 * 683901
- s20 = 0
-
- s7 += s19 * 666643
- s8 += s19 * 470296
- s9 += s19 * 654183
- s10 -= s19 * 997805
- s11 += s19 * 136657
- s12 -= s19 * 683901
- s19 = 0
-
- s6 += s18 * 666643
- s7 += s18 * 470296
- s8 += s18 * 654183
- s9 -= s18 * 997805
- s10 += s18 * 136657
- s11 -= s18 * 683901
- s18 = 0
-
- var carry [17]int64
-
- carry[6] = (s6 + (1 << 20)) >> 21
- s7 += carry[6]
- s6 -= carry[6] << 21
- carry[8] = (s8 + (1 << 20)) >> 21
- s9 += carry[8]
- s8 -= carry[8] << 21
- carry[10] = (s10 + (1 << 20)) >> 21
- s11 += carry[10]
- s10 -= carry[10] << 21
- carry[12] = (s12 + (1 << 20)) >> 21
- s13 += carry[12]
- s12 -= carry[12] << 21
- carry[14] = (s14 + (1 << 20)) >> 21
- s15 += carry[14]
- s14 -= carry[14] << 21
- carry[16] = (s16 + (1 << 20)) >> 21
- s17 += carry[16]
- s16 -= carry[16] << 21
-
- carry[7] = (s7 + (1 << 20)) >> 21
- s8 += carry[7]
- s7 -= carry[7] << 21
- carry[9] = (s9 + (1 << 20)) >> 21
- s10 += carry[9]
- s9 -= carry[9] << 21
- carry[11] = (s11 + (1 << 20)) >> 21
- s12 += carry[11]
- s11 -= carry[11] << 21
- carry[13] = (s13 + (1 << 20)) >> 21
- s14 += carry[13]
- s13 -= carry[13] << 21
- carry[15] = (s15 + (1 << 20)) >> 21
- s16 += carry[15]
- s15 -= carry[15] << 21
-
- s5 += s17 * 666643
- s6 += s17 * 470296
- s7 += s17 * 654183
- s8 -= s17 * 997805
- s9 += s17 * 136657
- s10 -= s17 * 683901
- s17 = 0
-
- s4 += s16 * 666643
- s5 += s16 * 470296
- s6 += s16 * 654183
- s7 -= s16 * 997805
- s8 += s16 * 136657
- s9 -= s16 * 683901
- s16 = 0
-
- s3 += s15 * 666643
- s4 += s15 * 470296
- s5 += s15 * 654183
- s6 -= s15 * 997805
- s7 += s15 * 136657
- s8 -= s15 * 683901
- s15 = 0
-
- s2 += s14 * 666643
- s3 += s14 * 470296
- s4 += s14 * 654183
- s5 -= s14 * 997805
- s6 += s14 * 136657
- s7 -= s14 * 683901
- s14 = 0
-
- s1 += s13 * 666643
- s2 += s13 * 470296
- s3 += s13 * 654183
- s4 -= s13 * 997805
- s5 += s13 * 136657
- s6 -= s13 * 683901
- s13 = 0
-
- s0 += s12 * 666643
- s1 += s12 * 470296
- s2 += s12 * 654183
- s3 -= s12 * 997805
- s4 += s12 * 136657
- s5 -= s12 * 683901
- s12 = 0
-
- carry[0] = (s0 + (1 << 20)) >> 21
- s1 += carry[0]
- s0 -= carry[0] << 21
- carry[2] = (s2 + (1 << 20)) >> 21
- s3 += carry[2]
- s2 -= carry[2] << 21
- carry[4] = (s4 + (1 << 20)) >> 21
- s5 += carry[4]
- s4 -= carry[4] << 21
- carry[6] = (s6 + (1 << 20)) >> 21
- s7 += carry[6]
- s6 -= carry[6] << 21
- carry[8] = (s8 + (1 << 20)) >> 21
- s9 += carry[8]
- s8 -= carry[8] << 21
- carry[10] = (s10 + (1 << 20)) >> 21
- s11 += carry[10]
- s10 -= carry[10] << 21
-
- carry[1] = (s1 + (1 << 20)) >> 21
- s2 += carry[1]
- s1 -= carry[1] << 21
- carry[3] = (s3 + (1 << 20)) >> 21
- s4 += carry[3]
- s3 -= carry[3] << 21
- carry[5] = (s5 + (1 << 20)) >> 21
- s6 += carry[5]
- s5 -= carry[5] << 21
- carry[7] = (s7 + (1 << 20)) >> 21
- s8 += carry[7]
- s7 -= carry[7] << 21
- carry[9] = (s9 + (1 << 20)) >> 21
- s10 += carry[9]
- s9 -= carry[9] << 21
- carry[11] = (s11 + (1 << 20)) >> 21
- s12 += carry[11]
- s11 -= carry[11] << 21
-
- s0 += s12 * 666643
- s1 += s12 * 470296
- s2 += s12 * 654183
- s3 -= s12 * 997805
- s4 += s12 * 136657
- s5 -= s12 * 683901
- s12 = 0
-
- carry[0] = s0 >> 21
- s1 += carry[0]
- s0 -= carry[0] << 21
- carry[1] = s1 >> 21
- s2 += carry[1]
- s1 -= carry[1] << 21
- carry[2] = s2 >> 21
- s3 += carry[2]
- s2 -= carry[2] << 21
- carry[3] = s3 >> 21
- s4 += carry[3]
- s3 -= carry[3] << 21
- carry[4] = s4 >> 21
- s5 += carry[4]
- s4 -= carry[4] << 21
- carry[5] = s5 >> 21
- s6 += carry[5]
- s5 -= carry[5] << 21
- carry[6] = s6 >> 21
- s7 += carry[6]
- s6 -= carry[6] << 21
- carry[7] = s7 >> 21
- s8 += carry[7]
- s7 -= carry[7] << 21
- carry[8] = s8 >> 21
- s9 += carry[8]
- s8 -= carry[8] << 21
- carry[9] = s9 >> 21
- s10 += carry[9]
- s9 -= carry[9] << 21
- carry[10] = s10 >> 21
- s11 += carry[10]
- s10 -= carry[10] << 21
- carry[11] = s11 >> 21
- s12 += carry[11]
- s11 -= carry[11] << 21
-
- s0 += s12 * 666643
- s1 += s12 * 470296
- s2 += s12 * 654183
- s3 -= s12 * 997805
- s4 += s12 * 136657
- s5 -= s12 * 683901
- s12 = 0
-
- carry[0] = s0 >> 21
- s1 += carry[0]
- s0 -= carry[0] << 21
- carry[1] = s1 >> 21
- s2 += carry[1]
- s1 -= carry[1] << 21
- carry[2] = s2 >> 21
- s3 += carry[2]
- s2 -= carry[2] << 21
- carry[3] = s3 >> 21
- s4 += carry[3]
- s3 -= carry[3] << 21
- carry[4] = s4 >> 21
- s5 += carry[4]
- s4 -= carry[4] << 21
- carry[5] = s5 >> 21
- s6 += carry[5]
- s5 -= carry[5] << 21
- carry[6] = s6 >> 21
- s7 += carry[6]
- s6 -= carry[6] << 21
- carry[7] = s7 >> 21
- s8 += carry[7]
- s7 -= carry[7] << 21
- carry[8] = s8 >> 21
- s9 += carry[8]
- s8 -= carry[8] << 21
- carry[9] = s9 >> 21
- s10 += carry[9]
- s9 -= carry[9] << 21
- carry[10] = s10 >> 21
- s11 += carry[10]
- s10 -= carry[10] << 21
-
- out[0] = byte(s0 >> 0)
- out[1] = byte(s0 >> 8)
- out[2] = byte((s0 >> 16) | (s1 << 5))
- out[3] = byte(s1 >> 3)
- out[4] = byte(s1 >> 11)
- out[5] = byte((s1 >> 19) | (s2 << 2))
- out[6] = byte(s2 >> 6)
- out[7] = byte((s2 >> 14) | (s3 << 7))
- out[8] = byte(s3 >> 1)
- out[9] = byte(s3 >> 9)
- out[10] = byte((s3 >> 17) | (s4 << 4))
- out[11] = byte(s4 >> 4)
- out[12] = byte(s4 >> 12)
- out[13] = byte((s4 >> 20) | (s5 << 1))
- out[14] = byte(s5 >> 7)
- out[15] = byte((s5 >> 15) | (s6 << 6))
- out[16] = byte(s6 >> 2)
- out[17] = byte(s6 >> 10)
- out[18] = byte((s6 >> 18) | (s7 << 3))
- out[19] = byte(s7 >> 5)
- out[20] = byte(s7 >> 13)
- out[21] = byte(s8 >> 0)
- out[22] = byte(s8 >> 8)
- out[23] = byte((s8 >> 16) | (s9 << 5))
- out[24] = byte(s9 >> 3)
- out[25] = byte(s9 >> 11)
- out[26] = byte((s9 >> 19) | (s10 << 2))
- out[27] = byte(s10 >> 6)
- out[28] = byte((s10 >> 14) | (s11 << 7))
- out[29] = byte(s11 >> 1)
- out[30] = byte(s11 >> 9)
- out[31] = byte(s11 >> 17)
-}
diff --git a/vendor/golang.org/x/net/internal/timeseries/timeseries.go b/vendor/golang.org/x/net/internal/timeseries/timeseries.go
deleted file mode 100644
index 1119f3448..000000000
--- a/vendor/golang.org/x/net/internal/timeseries/timeseries.go
+++ /dev/null
@@ -1,525 +0,0 @@
-// Copyright 2015 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// Package timeseries implements a time series structure for stats collection.
-package timeseries // import "golang.org/x/net/internal/timeseries"
-
-import (
- "fmt"
- "log"
- "time"
-)
-
-const (
- timeSeriesNumBuckets = 64
- minuteHourSeriesNumBuckets = 60
-)
-
-var timeSeriesResolutions = []time.Duration{
- 1 * time.Second,
- 10 * time.Second,
- 1 * time.Minute,
- 10 * time.Minute,
- 1 * time.Hour,
- 6 * time.Hour,
- 24 * time.Hour, // 1 day
- 7 * 24 * time.Hour, // 1 week
- 4 * 7 * 24 * time.Hour, // 4 weeks
- 16 * 7 * 24 * time.Hour, // 16 weeks
-}
-
-var minuteHourSeriesResolutions = []time.Duration{
- 1 * time.Second,
- 1 * time.Minute,
-}
-
-// An Observable is a kind of data that can be aggregated in a time series.
-type Observable interface {
- Multiply(ratio float64) // Multiplies the data in self by a given ratio
- Add(other Observable) // Adds the data from a different observation to self
- Clear() // Clears the observation so it can be reused.
- CopyFrom(other Observable) // Copies the contents of a given observation to self
-}
-
-// Float attaches the methods of Observable to a float64.
-type Float float64
-
-// NewFloat returns a Float.
-func NewFloat() Observable {
- f := Float(0)
- return &f
-}
-
-// String returns the float as a string.
-func (f *Float) String() string { return fmt.Sprintf("%g", f.Value()) }
-
-// Value returns the float's value.
-func (f *Float) Value() float64 { return float64(*f) }
-
-func (f *Float) Multiply(ratio float64) { *f *= Float(ratio) }
-
-func (f *Float) Add(other Observable) {
- o := other.(*Float)
- *f += *o
-}
-
-func (f *Float) Clear() { *f = 0 }
-
-func (f *Float) CopyFrom(other Observable) {
- o := other.(*Float)
- *f = *o
-}
-
-// A Clock tells the current time.
-type Clock interface {
- Time() time.Time
-}
-
-type defaultClock int
-
-var defaultClockInstance defaultClock
-
-func (defaultClock) Time() time.Time { return time.Now() }
-
-// Information kept per level. Each level consists of a circular list of
-// observations. The start of the level may be derived from end and the
-// len(buckets) * sizeInMillis.
-type tsLevel struct {
- oldest int // index to oldest bucketed Observable
- newest int // index to newest bucketed Observable
- end time.Time // end timestamp for this level
- size time.Duration // duration of the bucketed Observable
- buckets []Observable // collections of observations
- provider func() Observable // used for creating new Observable
-}
-
-func (l *tsLevel) Clear() {
- l.oldest = 0
- l.newest = len(l.buckets) - 1
- l.end = time.Time{}
- for i := range l.buckets {
- if l.buckets[i] != nil {
- l.buckets[i].Clear()
- l.buckets[i] = nil
- }
- }
-}
-
-func (l *tsLevel) InitLevel(size time.Duration, numBuckets int, f func() Observable) {
- l.size = size
- l.provider = f
- l.buckets = make([]Observable, numBuckets)
-}
-
-// Keeps a sequence of levels. Each level is responsible for storing data at
-// a given resolution. For example, the first level stores data at a one
-// minute resolution while the second level stores data at a one hour
-// resolution.
-
-// Each level is represented by a sequence of buckets. Each bucket spans an
-// interval equal to the resolution of the level. New observations are added
-// to the last bucket.
-type timeSeries struct {
- provider func() Observable // make more Observable
- numBuckets int // number of buckets in each level
- levels []*tsLevel // levels of bucketed Observable
- lastAdd time.Time // time of last Observable tracked
- total Observable // convenient aggregation of all Observable
- clock Clock // Clock for getting current time
- pending Observable // observations not yet bucketed
- pendingTime time.Time // what time are we keeping in pending
- dirty bool // if there are pending observations
-}
-
-// init initializes a level according to the supplied criteria.
-func (ts *timeSeries) init(resolutions []time.Duration, f func() Observable, numBuckets int, clock Clock) {
- ts.provider = f
- ts.numBuckets = numBuckets
- ts.clock = clock
- ts.levels = make([]*tsLevel, len(resolutions))
-
- for i := range resolutions {
- if i > 0 && resolutions[i-1] >= resolutions[i] {
- log.Print("timeseries: resolutions must be monotonically increasing")
- break
- }
- newLevel := new(tsLevel)
- newLevel.InitLevel(resolutions[i], ts.numBuckets, ts.provider)
- ts.levels[i] = newLevel
- }
-
- ts.Clear()
-}
-
-// Clear removes all observations from the time series.
-func (ts *timeSeries) Clear() {
- ts.lastAdd = time.Time{}
- ts.total = ts.resetObservation(ts.total)
- ts.pending = ts.resetObservation(ts.pending)
- ts.pendingTime = time.Time{}
- ts.dirty = false
-
- for i := range ts.levels {
- ts.levels[i].Clear()
- }
-}
-
-// Add records an observation at the current time.
-func (ts *timeSeries) Add(observation Observable) {
- ts.AddWithTime(observation, ts.clock.Time())
-}
-
-// AddWithTime records an observation at the specified time.
-func (ts *timeSeries) AddWithTime(observation Observable, t time.Time) {
-
- smallBucketDuration := ts.levels[0].size
-
- if t.After(ts.lastAdd) {
- ts.lastAdd = t
- }
-
- if t.After(ts.pendingTime) {
- ts.advance(t)
- ts.mergePendingUpdates()
- ts.pendingTime = ts.levels[0].end
- ts.pending.CopyFrom(observation)
- ts.dirty = true
- } else if t.After(ts.pendingTime.Add(-1 * smallBucketDuration)) {
- // The observation is close enough to go into the pending bucket.
- // This compensates for clock skewing and small scheduling delays
- // by letting the update stay in the fast path.
- ts.pending.Add(observation)
- ts.dirty = true
- } else {
- ts.mergeValue(observation, t)
- }
-}
-
-// mergeValue inserts the observation at the specified time in the past into all levels.
-func (ts *timeSeries) mergeValue(observation Observable, t time.Time) {
- for _, level := range ts.levels {
- index := (ts.numBuckets - 1) - int(level.end.Sub(t)/level.size)
- if 0 <= index && index < ts.numBuckets {
- bucketNumber := (level.oldest + index) % ts.numBuckets
- if level.buckets[bucketNumber] == nil {
- level.buckets[bucketNumber] = level.provider()
- }
- level.buckets[bucketNumber].Add(observation)
- }
- }
- ts.total.Add(observation)
-}
-
-// mergePendingUpdates applies the pending updates into all levels.
-func (ts *timeSeries) mergePendingUpdates() {
- if ts.dirty {
- ts.mergeValue(ts.pending, ts.pendingTime)
- ts.pending = ts.resetObservation(ts.pending)
- ts.dirty = false
- }
-}
-
-// advance cycles the buckets at each level until the latest bucket in
-// each level can hold the time specified.
-func (ts *timeSeries) advance(t time.Time) {
- if !t.After(ts.levels[0].end) {
- return
- }
- for i := 0; i < len(ts.levels); i++ {
- level := ts.levels[i]
- if !level.end.Before(t) {
- break
- }
-
- // If the time is sufficiently far, just clear the level and advance
- // directly.
- if !t.Before(level.end.Add(level.size * time.Duration(ts.numBuckets))) {
- for _, b := range level.buckets {
- ts.resetObservation(b)
- }
- level.end = time.Unix(0, (t.UnixNano()/level.size.Nanoseconds())*level.size.Nanoseconds())
- }
-
- for t.After(level.end) {
- level.end = level.end.Add(level.size)
- level.newest = level.oldest
- level.oldest = (level.oldest + 1) % ts.numBuckets
- ts.resetObservation(level.buckets[level.newest])
- }
-
- t = level.end
- }
-}
-
-// Latest returns the sum of the num latest buckets from the level.
-func (ts *timeSeries) Latest(level, num int) Observable {
- now := ts.clock.Time()
- if ts.levels[0].end.Before(now) {
- ts.advance(now)
- }
-
- ts.mergePendingUpdates()
-
- result := ts.provider()
- l := ts.levels[level]
- index := l.newest
-
- for i := 0; i < num; i++ {
- if l.buckets[index] != nil {
- result.Add(l.buckets[index])
- }
- if index == 0 {
- index = ts.numBuckets
- }
- index--
- }
-
- return result
-}
-
-// LatestBuckets returns a copy of the num latest buckets from level.
-func (ts *timeSeries) LatestBuckets(level, num int) []Observable {
- if level < 0 || level > len(ts.levels) {
- log.Print("timeseries: bad level argument: ", level)
- return nil
- }
- if num < 0 || num >= ts.numBuckets {
- log.Print("timeseries: bad num argument: ", num)
- return nil
- }
-
- results := make([]Observable, num)
- now := ts.clock.Time()
- if ts.levels[0].end.Before(now) {
- ts.advance(now)
- }
-
- ts.mergePendingUpdates()
-
- l := ts.levels[level]
- index := l.newest
-
- for i := 0; i < num; i++ {
- result := ts.provider()
- results[i] = result
- if l.buckets[index] != nil {
- result.CopyFrom(l.buckets[index])
- }
-
- if index == 0 {
- index = ts.numBuckets
- }
- index -= 1
- }
- return results
-}
-
-// ScaleBy updates observations by scaling by factor.
-func (ts *timeSeries) ScaleBy(factor float64) {
- for _, l := range ts.levels {
- for i := 0; i < ts.numBuckets; i++ {
- l.buckets[i].Multiply(factor)
- }
- }
-
- ts.total.Multiply(factor)
- ts.pending.Multiply(factor)
-}
-
-// Range returns the sum of observations added over the specified time range.
-// If start or finish times don't fall on bucket boundaries of the same
-// level, then return values are approximate answers.
-func (ts *timeSeries) Range(start, finish time.Time) Observable {
- return ts.ComputeRange(start, finish, 1)[0]
-}
-
-// Recent returns the sum of observations from the last delta.
-func (ts *timeSeries) Recent(delta time.Duration) Observable {
- now := ts.clock.Time()
- return ts.Range(now.Add(-delta), now)
-}
-
-// Total returns the total of all observations.
-func (ts *timeSeries) Total() Observable {
- ts.mergePendingUpdates()
- return ts.total
-}
-
-// ComputeRange computes a specified number of values into a slice using
-// the observations recorded over the specified time period. The return
-// values are approximate if the start or finish times don't fall on the
-// bucket boundaries at the same level or if the number of buckets spanning
-// the range is not an integral multiple of num.
-func (ts *timeSeries) ComputeRange(start, finish time.Time, num int) []Observable {
- if start.After(finish) {
- log.Printf("timeseries: start > finish, %v>%v", start, finish)
- return nil
- }
-
- if num < 0 {
- log.Printf("timeseries: num < 0, %v", num)
- return nil
- }
-
- results := make([]Observable, num)
-
- for _, l := range ts.levels {
- if !start.Before(l.end.Add(-l.size * time.Duration(ts.numBuckets))) {
- ts.extract(l, start, finish, num, results)
- return results
- }
- }
-
- // Failed to find a level that covers the desired range. So just
- // extract from the last level, even if it doesn't cover the entire
- // desired range.
- ts.extract(ts.levels[len(ts.levels)-1], start, finish, num, results)
-
- return results
-}
-
-// RecentList returns the specified number of values in slice over the most
-// recent time period of the specified range.
-func (ts *timeSeries) RecentList(delta time.Duration, num int) []Observable {
- if delta < 0 {
- return nil
- }
- now := ts.clock.Time()
- return ts.ComputeRange(now.Add(-delta), now, num)
-}
-
-// extract returns a slice of specified number of observations from a given
-// level over a given range.
-func (ts *timeSeries) extract(l *tsLevel, start, finish time.Time, num int, results []Observable) {
- ts.mergePendingUpdates()
-
- srcInterval := l.size
- dstInterval := finish.Sub(start) / time.Duration(num)
- dstStart := start
- srcStart := l.end.Add(-srcInterval * time.Duration(ts.numBuckets))
-
- srcIndex := 0
-
- // Where should scanning start?
- if dstStart.After(srcStart) {
- advance := dstStart.Sub(srcStart) / srcInterval
- srcIndex += int(advance)
- srcStart = srcStart.Add(advance * srcInterval)
- }
-
- // The i'th value is computed as show below.
- // interval = (finish/start)/num
- // i'th value = sum of observation in range
- // [ start + i * interval,
- // start + (i + 1) * interval )
- for i := 0; i < num; i++ {
- results[i] = ts.resetObservation(results[i])
- dstEnd := dstStart.Add(dstInterval)
- for srcIndex < ts.numBuckets && srcStart.Before(dstEnd) {
- srcEnd := srcStart.Add(srcInterval)
- if srcEnd.After(ts.lastAdd) {
- srcEnd = ts.lastAdd
- }
-
- if !srcEnd.Before(dstStart) {
- srcValue := l.buckets[(srcIndex+l.oldest)%ts.numBuckets]
- if !srcStart.Before(dstStart) && !srcEnd.After(dstEnd) {
- // dst completely contains src.
- if srcValue != nil {
- results[i].Add(srcValue)
- }
- } else {
- // dst partially overlaps src.
- overlapStart := maxTime(srcStart, dstStart)
- overlapEnd := minTime(srcEnd, dstEnd)
- base := srcEnd.Sub(srcStart)
- fraction := overlapEnd.Sub(overlapStart).Seconds() / base.Seconds()
-
- used := ts.provider()
- if srcValue != nil {
- used.CopyFrom(srcValue)
- }
- used.Multiply(fraction)
- results[i].Add(used)
- }
-
- if srcEnd.After(dstEnd) {
- break
- }
- }
- srcIndex++
- srcStart = srcStart.Add(srcInterval)
- }
- dstStart = dstStart.Add(dstInterval)
- }
-}
-
-// resetObservation clears the content so the struct may be reused.
-func (ts *timeSeries) resetObservation(observation Observable) Observable {
- if observation == nil {
- observation = ts.provider()
- } else {
- observation.Clear()
- }
- return observation
-}
-
-// TimeSeries tracks data at granularities from 1 second to 16 weeks.
-type TimeSeries struct {
- timeSeries
-}
-
-// NewTimeSeries creates a new TimeSeries using the function provided for creating new Observable.
-func NewTimeSeries(f func() Observable) *TimeSeries {
- return NewTimeSeriesWithClock(f, defaultClockInstance)
-}
-
-// NewTimeSeriesWithClock creates a new TimeSeries using the function provided for creating new Observable and the clock for
-// assigning timestamps.
-func NewTimeSeriesWithClock(f func() Observable, clock Clock) *TimeSeries {
- ts := new(TimeSeries)
- ts.timeSeries.init(timeSeriesResolutions, f, timeSeriesNumBuckets, clock)
- return ts
-}
-
-// MinuteHourSeries tracks data at granularities of 1 minute and 1 hour.
-type MinuteHourSeries struct {
- timeSeries
-}
-
-// NewMinuteHourSeries creates a new MinuteHourSeries using the function provided for creating new Observable.
-func NewMinuteHourSeries(f func() Observable) *MinuteHourSeries {
- return NewMinuteHourSeriesWithClock(f, defaultClockInstance)
-}
-
-// NewMinuteHourSeriesWithClock creates a new MinuteHourSeries using the function provided for creating new Observable and the clock for
-// assigning timestamps.
-func NewMinuteHourSeriesWithClock(f func() Observable, clock Clock) *MinuteHourSeries {
- ts := new(MinuteHourSeries)
- ts.timeSeries.init(minuteHourSeriesResolutions, f,
- minuteHourSeriesNumBuckets, clock)
- return ts
-}
-
-func (ts *MinuteHourSeries) Minute() Observable {
- return ts.timeSeries.Latest(0, 60)
-}
-
-func (ts *MinuteHourSeries) Hour() Observable {
- return ts.timeSeries.Latest(1, 60)
-}
-
-func minTime(a, b time.Time) time.Time {
- if a.Before(b) {
- return a
- }
- return b
-}
-
-func maxTime(a, b time.Time) time.Time {
- if a.After(b) {
- return a
- }
- return b
-}
diff --git a/vendor/golang.org/x/net/trace/events.go b/vendor/golang.org/x/net/trace/events.go
deleted file mode 100644
index d8daec1a7..000000000
--- a/vendor/golang.org/x/net/trace/events.go
+++ /dev/null
@@ -1,532 +0,0 @@
-// Copyright 2015 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package trace
-
-import (
- "bytes"
- "fmt"
- "html/template"
- "io"
- "log"
- "net/http"
- "runtime"
- "sort"
- "strconv"
- "strings"
- "sync"
- "sync/atomic"
- "text/tabwriter"
- "time"
-)
-
-const maxEventsPerLog = 100
-
-type bucket struct {
- MaxErrAge time.Duration
- String string
-}
-
-var buckets = []bucket{
- {0, "total"},
- {10 * time.Second, "errs<10s"},
- {1 * time.Minute, "errs<1m"},
- {10 * time.Minute, "errs<10m"},
- {1 * time.Hour, "errs<1h"},
- {10 * time.Hour, "errs<10h"},
- {24000 * time.Hour, "errors"},
-}
-
-// RenderEvents renders the HTML page typically served at /debug/events.
-// It does not do any auth checking; see AuthRequest for the default auth check
-// used by the handler registered on http.DefaultServeMux.
-// req may be nil.
-func RenderEvents(w http.ResponseWriter, req *http.Request, sensitive bool) {
- now := time.Now()
- data := &struct {
- Families []string // family names
- Buckets []bucket
- Counts [][]int // eventLog count per family/bucket
-
- // Set when a bucket has been selected.
- Family string
- Bucket int
- EventLogs eventLogs
- Expanded bool
- }{
- Buckets: buckets,
- }
-
- data.Families = make([]string, 0, len(families))
- famMu.RLock()
- for name := range families {
- data.Families = append(data.Families, name)
- }
- famMu.RUnlock()
- sort.Strings(data.Families)
-
- // Count the number of eventLogs in each family for each error age.
- data.Counts = make([][]int, len(data.Families))
- for i, name := range data.Families {
- // TODO(sameer): move this loop under the family lock.
- f := getEventFamily(name)
- data.Counts[i] = make([]int, len(data.Buckets))
- for j, b := range data.Buckets {
- data.Counts[i][j] = f.Count(now, b.MaxErrAge)
- }
- }
-
- if req != nil {
- var ok bool
- data.Family, data.Bucket, ok = parseEventsArgs(req)
- if !ok {
- // No-op
- } else {
- data.EventLogs = getEventFamily(data.Family).Copy(now, buckets[data.Bucket].MaxErrAge)
- }
- if data.EventLogs != nil {
- defer data.EventLogs.Free()
- sort.Sort(data.EventLogs)
- }
- if exp, err := strconv.ParseBool(req.FormValue("exp")); err == nil {
- data.Expanded = exp
- }
- }
-
- famMu.RLock()
- defer famMu.RUnlock()
- if err := eventsTmpl().Execute(w, data); err != nil {
- log.Printf("net/trace: Failed executing template: %v", err)
- }
-}
-
-func parseEventsArgs(req *http.Request) (fam string, b int, ok bool) {
- fam, bStr := req.FormValue("fam"), req.FormValue("b")
- if fam == "" || bStr == "" {
- return "", 0, false
- }
- b, err := strconv.Atoi(bStr)
- if err != nil || b < 0 || b >= len(buckets) {
- return "", 0, false
- }
- return fam, b, true
-}
-
-// An EventLog provides a log of events associated with a specific object.
-type EventLog interface {
- // Printf formats its arguments with fmt.Sprintf and adds the
- // result to the event log.
- Printf(format string, a ...interface{})
-
- // Errorf is like Printf, but it marks this event as an error.
- Errorf(format string, a ...interface{})
-
- // Finish declares that this event log is complete.
- // The event log should not be used after calling this method.
- Finish()
-}
-
-// NewEventLog returns a new EventLog with the specified family name
-// and title.
-func NewEventLog(family, title string) EventLog {
- el := newEventLog()
- el.ref()
- el.Family, el.Title = family, title
- el.Start = time.Now()
- el.events = make([]logEntry, 0, maxEventsPerLog)
- el.stack = make([]uintptr, 32)
- n := runtime.Callers(2, el.stack)
- el.stack = el.stack[:n]
-
- getEventFamily(family).add(el)
- return el
-}
-
-func (el *eventLog) Finish() {
- getEventFamily(el.Family).remove(el)
- el.unref() // matches ref in New
-}
-
-var (
- famMu sync.RWMutex
- families = make(map[string]*eventFamily) // family name => family
-)
-
-func getEventFamily(fam string) *eventFamily {
- famMu.Lock()
- defer famMu.Unlock()
- f := families[fam]
- if f == nil {
- f = &eventFamily{}
- families[fam] = f
- }
- return f
-}
-
-type eventFamily struct {
- mu sync.RWMutex
- eventLogs eventLogs
-}
-
-func (f *eventFamily) add(el *eventLog) {
- f.mu.Lock()
- f.eventLogs = append(f.eventLogs, el)
- f.mu.Unlock()
-}
-
-func (f *eventFamily) remove(el *eventLog) {
- f.mu.Lock()
- defer f.mu.Unlock()
- for i, el0 := range f.eventLogs {
- if el == el0 {
- copy(f.eventLogs[i:], f.eventLogs[i+1:])
- f.eventLogs = f.eventLogs[:len(f.eventLogs)-1]
- return
- }
- }
-}
-
-func (f *eventFamily) Count(now time.Time, maxErrAge time.Duration) (n int) {
- f.mu.RLock()
- defer f.mu.RUnlock()
- for _, el := range f.eventLogs {
- if el.hasRecentError(now, maxErrAge) {
- n++
- }
- }
- return
-}
-
-func (f *eventFamily) Copy(now time.Time, maxErrAge time.Duration) (els eventLogs) {
- f.mu.RLock()
- defer f.mu.RUnlock()
- els = make(eventLogs, 0, len(f.eventLogs))
- for _, el := range f.eventLogs {
- if el.hasRecentError(now, maxErrAge) {
- el.ref()
- els = append(els, el)
- }
- }
- return
-}
-
-type eventLogs []*eventLog
-
-// Free calls unref on each element of the list.
-func (els eventLogs) Free() {
- for _, el := range els {
- el.unref()
- }
-}
-
-// eventLogs may be sorted in reverse chronological order.
-func (els eventLogs) Len() int { return len(els) }
-func (els eventLogs) Less(i, j int) bool { return els[i].Start.After(els[j].Start) }
-func (els eventLogs) Swap(i, j int) { els[i], els[j] = els[j], els[i] }
-
-// A logEntry is a timestamped log entry in an event log.
-type logEntry struct {
- When time.Time
- Elapsed time.Duration // since previous event in log
- NewDay bool // whether this event is on a different day to the previous event
- What string
- IsErr bool
-}
-
-// WhenString returns a string representation of the elapsed time of the event.
-// It will include the date if midnight was crossed.
-func (e logEntry) WhenString() string {
- if e.NewDay {
- return e.When.Format("2006/01/02 15:04:05.000000")
- }
- return e.When.Format("15:04:05.000000")
-}
-
-// An eventLog represents an active event log.
-type eventLog struct {
- // Family is the top-level grouping of event logs to which this belongs.
- Family string
-
- // Title is the title of this event log.
- Title string
-
- // Timing information.
- Start time.Time
-
- // Call stack where this event log was created.
- stack []uintptr
-
- // Append-only sequence of events.
- //
- // TODO(sameer): change this to a ring buffer to avoid the array copy
- // when we hit maxEventsPerLog.
- mu sync.RWMutex
- events []logEntry
- LastErrorTime time.Time
- discarded int
-
- refs int32 // how many buckets this is in
-}
-
-func (el *eventLog) reset() {
- // Clear all but the mutex. Mutexes may not be copied, even when unlocked.
- el.Family = ""
- el.Title = ""
- el.Start = time.Time{}
- el.stack = nil
- el.events = nil
- el.LastErrorTime = time.Time{}
- el.discarded = 0
- el.refs = 0
-}
-
-func (el *eventLog) hasRecentError(now time.Time, maxErrAge time.Duration) bool {
- if maxErrAge == 0 {
- return true
- }
- el.mu.RLock()
- defer el.mu.RUnlock()
- return now.Sub(el.LastErrorTime) < maxErrAge
-}
-
-// delta returns the elapsed time since the last event or the log start,
-// and whether it spans midnight.
-// L >= el.mu
-func (el *eventLog) delta(t time.Time) (time.Duration, bool) {
- if len(el.events) == 0 {
- return t.Sub(el.Start), false
- }
- prev := el.events[len(el.events)-1].When
- return t.Sub(prev), prev.Day() != t.Day()
-
-}
-
-func (el *eventLog) Printf(format string, a ...interface{}) {
- el.printf(false, format, a...)
-}
-
-func (el *eventLog) Errorf(format string, a ...interface{}) {
- el.printf(true, format, a...)
-}
-
-func (el *eventLog) printf(isErr bool, format string, a ...interface{}) {
- e := logEntry{When: time.Now(), IsErr: isErr, What: fmt.Sprintf(format, a...)}
- el.mu.Lock()
- e.Elapsed, e.NewDay = el.delta(e.When)
- if len(el.events) < maxEventsPerLog {
- el.events = append(el.events, e)
- } else {
- // Discard the oldest event.
- if el.discarded == 0 {
- // el.discarded starts at two to count for the event it
- // is replacing, plus the next one that we are about to
- // drop.
- el.discarded = 2
- } else {
- el.discarded++
- }
- // TODO(sameer): if this causes allocations on a critical path,
- // change eventLog.What to be a fmt.Stringer, as in trace.go.
- el.events[0].What = fmt.Sprintf("(%d events discarded)", el.discarded)
- // The timestamp of the discarded meta-event should be
- // the time of the last event it is representing.
- el.events[0].When = el.events[1].When
- copy(el.events[1:], el.events[2:])
- el.events[maxEventsPerLog-1] = e
- }
- if e.IsErr {
- el.LastErrorTime = e.When
- }
- el.mu.Unlock()
-}
-
-func (el *eventLog) ref() {
- atomic.AddInt32(&el.refs, 1)
-}
-
-func (el *eventLog) unref() {
- if atomic.AddInt32(&el.refs, -1) == 0 {
- freeEventLog(el)
- }
-}
-
-func (el *eventLog) When() string {
- return el.Start.Format("2006/01/02 15:04:05.000000")
-}
-
-func (el *eventLog) ElapsedTime() string {
- elapsed := time.Since(el.Start)
- return fmt.Sprintf("%.6f", elapsed.Seconds())
-}
-
-func (el *eventLog) Stack() string {
- buf := new(bytes.Buffer)
- tw := tabwriter.NewWriter(buf, 1, 8, 1, '\t', 0)
- printStackRecord(tw, el.stack)
- tw.Flush()
- return buf.String()
-}
-
-// printStackRecord prints the function + source line information
-// for a single stack trace.
-// Adapted from runtime/pprof/pprof.go.
-func printStackRecord(w io.Writer, stk []uintptr) {
- for _, pc := range stk {
- f := runtime.FuncForPC(pc)
- if f == nil {
- continue
- }
- file, line := f.FileLine(pc)
- name := f.Name()
- // Hide runtime.goexit and any runtime functions at the beginning.
- if strings.HasPrefix(name, "runtime.") {
- continue
- }
- fmt.Fprintf(w, "# %s\t%s:%d\n", name, file, line)
- }
-}
-
-func (el *eventLog) Events() []logEntry {
- el.mu.RLock()
- defer el.mu.RUnlock()
- return el.events
-}
-
-// freeEventLogs is a freelist of *eventLog
-var freeEventLogs = make(chan *eventLog, 1000)
-
-// newEventLog returns a event log ready to use.
-func newEventLog() *eventLog {
- select {
- case el := <-freeEventLogs:
- return el
- default:
- return new(eventLog)
- }
-}
-
-// freeEventLog adds el to freeEventLogs if there's room.
-// This is non-blocking.
-func freeEventLog(el *eventLog) {
- el.reset()
- select {
- case freeEventLogs <- el:
- default:
- }
-}
-
-var eventsTmplCache *template.Template
-var eventsTmplOnce sync.Once
-
-func eventsTmpl() *template.Template {
- eventsTmplOnce.Do(func() {
- eventsTmplCache = template.Must(template.New("events").Funcs(template.FuncMap{
- "elapsed": elapsed,
- "trimSpace": strings.TrimSpace,
- }).Parse(eventsHTML))
- })
- return eventsTmplCache
-}
-
-const eventsHTML = `
-<html>
- <head>
- <title>events</title>
- </head>
- <style type="text/css">
- body {
- font-family: sans-serif;
- }
- table#req-status td.family {
- padding-right: 2em;
- }
- table#req-status td.active {
- padding-right: 1em;
- }
- table#req-status td.empty {
- color: #aaa;
- }
- table#reqs {
- margin-top: 1em;
- }
- table#reqs tr.first {
- {{if $.Expanded}}font-weight: bold;{{end}}
- }
- table#reqs td {
- font-family: monospace;
- }
- table#reqs td.when {
- text-align: right;
- white-space: nowrap;
- }
- table#reqs td.elapsed {
- padding: 0 0.5em;
- text-align: right;
- white-space: pre;
- width: 10em;
- }
- address {
- font-size: smaller;
- margin-top: 5em;
- }
- </style>
- <body>
-
-<h1>/debug/events</h1>
-
-<table id="req-status">
- {{range $i, $fam := .Families}}
- <tr>
- <td class="family">{{$fam}}</td>
-
- {{range $j, $bucket := $.Buckets}}
- {{$n := index $.Counts $i $j}}
- <td class="{{if not $bucket.MaxErrAge}}active{{end}}{{if not $n}}empty{{end}}">
- {{if $n}}<a href="?fam={{$fam}}&b={{$j}}{{if $.Expanded}}&exp=1{{end}}">{{end}}
- [{{$n}} {{$bucket.String}}]
- {{if $n}}</a>{{end}}
- </td>
- {{end}}
-
- </tr>{{end}}
-</table>
-
-{{if $.EventLogs}}
-<hr />
-<h3>Family: {{$.Family}}</h3>
-
-{{if $.Expanded}}<a href="?fam={{$.Family}}&b={{$.Bucket}}">{{end}}
-[Summary]{{if $.Expanded}}</a>{{end}}
-
-{{if not $.Expanded}}<a href="?fam={{$.Family}}&b={{$.Bucket}}&exp=1">{{end}}
-[Expanded]{{if not $.Expanded}}</a>{{end}}
-
-<table id="reqs">
- <tr><th>When</th><th>Elapsed</th></tr>
- {{range $el := $.EventLogs}}
- <tr class="first">
- <td class="when">{{$el.When}}</td>
- <td class="elapsed">{{$el.ElapsedTime}}</td>
- <td>{{$el.Title}}
- </tr>
- {{if $.Expanded}}
- <tr>
- <td class="when"></td>
- <td class="elapsed"></td>
- <td><pre>{{$el.Stack|trimSpace}}</pre></td>
- </tr>
- {{range $el.Events}}
- <tr>
- <td class="when">{{.WhenString}}</td>
- <td class="elapsed">{{elapsed .Elapsed}}</td>
- <td>.{{if .IsErr}}E{{else}}.{{end}}. {{.What}}</td>
- </tr>
- {{end}}
- {{end}}
- {{end}}
-</table>
-{{end}}
- </body>
-</html>
-`
diff --git a/vendor/golang.org/x/net/trace/histogram.go b/vendor/golang.org/x/net/trace/histogram.go
deleted file mode 100644
index 9bf4286c7..000000000
--- a/vendor/golang.org/x/net/trace/histogram.go
+++ /dev/null
@@ -1,365 +0,0 @@
-// Copyright 2015 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package trace
-
-// This file implements histogramming for RPC statistics collection.
-
-import (
- "bytes"
- "fmt"
- "html/template"
- "log"
- "math"
- "sync"
-
- "golang.org/x/net/internal/timeseries"
-)
-
-const (
- bucketCount = 38
-)
-
-// histogram keeps counts of values in buckets that are spaced
-// out in powers of 2: 0-1, 2-3, 4-7...
-// histogram implements timeseries.Observable
-type histogram struct {
- sum int64 // running total of measurements
- sumOfSquares float64 // square of running total
- buckets []int64 // bucketed values for histogram
- value int // holds a single value as an optimization
- valueCount int64 // number of values recorded for single value
-}
-
-// AddMeasurement records a value measurement observation to the histogram.
-func (h *histogram) addMeasurement(value int64) {
- // TODO: assert invariant
- h.sum += value
- h.sumOfSquares += float64(value) * float64(value)
-
- bucketIndex := getBucket(value)
-
- if h.valueCount == 0 || (h.valueCount > 0 && h.value == bucketIndex) {
- h.value = bucketIndex
- h.valueCount++
- } else {
- h.allocateBuckets()
- h.buckets[bucketIndex]++
- }
-}
-
-func (h *histogram) allocateBuckets() {
- if h.buckets == nil {
- h.buckets = make([]int64, bucketCount)
- h.buckets[h.value] = h.valueCount
- h.value = 0
- h.valueCount = -1
- }
-}
-
-func log2(i int64) int {
- n := 0
- for ; i >= 0x100; i >>= 8 {
- n += 8
- }
- for ; i > 0; i >>= 1 {
- n += 1
- }
- return n
-}
-
-func getBucket(i int64) (index int) {
- index = log2(i) - 1
- if index < 0 {
- index = 0
- }
- if index >= bucketCount {
- index = bucketCount - 1
- }
- return
-}
-
-// Total returns the number of recorded observations.
-func (h *histogram) total() (total int64) {
- if h.valueCount >= 0 {
- total = h.valueCount
- }
- for _, val := range h.buckets {
- total += int64(val)
- }
- return
-}
-
-// Average returns the average value of recorded observations.
-func (h *histogram) average() float64 {
- t := h.total()
- if t == 0 {
- return 0
- }
- return float64(h.sum) / float64(t)
-}
-
-// Variance returns the variance of recorded observations.
-func (h *histogram) variance() float64 {
- t := float64(h.total())
- if t == 0 {
- return 0
- }
- s := float64(h.sum) / t
- return h.sumOfSquares/t - s*s
-}
-
-// StandardDeviation returns the standard deviation of recorded observations.
-func (h *histogram) standardDeviation() float64 {
- return math.Sqrt(h.variance())
-}
-
-// PercentileBoundary estimates the value that the given fraction of recorded
-// observations are less than.
-func (h *histogram) percentileBoundary(percentile float64) int64 {
- total := h.total()
-
- // Corner cases (make sure result is strictly less than Total())
- if total == 0 {
- return 0
- } else if total == 1 {
- return int64(h.average())
- }
-
- percentOfTotal := round(float64(total) * percentile)
- var runningTotal int64
-
- for i := range h.buckets {
- value := h.buckets[i]
- runningTotal += value
- if runningTotal == percentOfTotal {
- // We hit an exact bucket boundary. If the next bucket has data, it is a
- // good estimate of the value. If the bucket is empty, we interpolate the
- // midpoint between the next bucket's boundary and the next non-zero
- // bucket. If the remaining buckets are all empty, then we use the
- // boundary for the next bucket as the estimate.
- j := uint8(i + 1)
- min := bucketBoundary(j)
- if runningTotal < total {
- for h.buckets[j] == 0 {
- j++
- }
- }
- max := bucketBoundary(j)
- return min + round(float64(max-min)/2)
- } else if runningTotal > percentOfTotal {
- // The value is in this bucket. Interpolate the value.
- delta := runningTotal - percentOfTotal
- percentBucket := float64(value-delta) / float64(value)
- bucketMin := bucketBoundary(uint8(i))
- nextBucketMin := bucketBoundary(uint8(i + 1))
- bucketSize := nextBucketMin - bucketMin
- return bucketMin + round(percentBucket*float64(bucketSize))
- }
- }
- return bucketBoundary(bucketCount - 1)
-}
-
-// Median returns the estimated median of the observed values.
-func (h *histogram) median() int64 {
- return h.percentileBoundary(0.5)
-}
-
-// Add adds other to h.
-func (h *histogram) Add(other timeseries.Observable) {
- o := other.(*histogram)
- if o.valueCount == 0 {
- // Other histogram is empty
- } else if h.valueCount >= 0 && o.valueCount > 0 && h.value == o.value {
- // Both have a single bucketed value, aggregate them
- h.valueCount += o.valueCount
- } else {
- // Two different values necessitate buckets in this histogram
- h.allocateBuckets()
- if o.valueCount >= 0 {
- h.buckets[o.value] += o.valueCount
- } else {
- for i := range h.buckets {
- h.buckets[i] += o.buckets[i]
- }
- }
- }
- h.sumOfSquares += o.sumOfSquares
- h.sum += o.sum
-}
-
-// Clear resets the histogram to an empty state, removing all observed values.
-func (h *histogram) Clear() {
- h.buckets = nil
- h.value = 0
- h.valueCount = 0
- h.sum = 0
- h.sumOfSquares = 0
-}
-
-// CopyFrom copies from other, which must be a *histogram, into h.
-func (h *histogram) CopyFrom(other timeseries.Observable) {
- o := other.(*histogram)
- if o.valueCount == -1 {
- h.allocateBuckets()
- copy(h.buckets, o.buckets)
- }
- h.sum = o.sum
- h.sumOfSquares = o.sumOfSquares
- h.value = o.value
- h.valueCount = o.valueCount
-}
-
-// Multiply scales the histogram by the specified ratio.
-func (h *histogram) Multiply(ratio float64) {
- if h.valueCount == -1 {
- for i := range h.buckets {
- h.buckets[i] = int64(float64(h.buckets[i]) * ratio)
- }
- } else {
- h.valueCount = int64(float64(h.valueCount) * ratio)
- }
- h.sum = int64(float64(h.sum) * ratio)
- h.sumOfSquares = h.sumOfSquares * ratio
-}
-
-// New creates a new histogram.
-func (h *histogram) New() timeseries.Observable {
- r := new(histogram)
- r.Clear()
- return r
-}
-
-func (h *histogram) String() string {
- return fmt.Sprintf("%d, %f, %d, %d, %v",
- h.sum, h.sumOfSquares, h.value, h.valueCount, h.buckets)
-}
-
-// round returns the closest int64 to the argument
-func round(in float64) int64 {
- return int64(math.Floor(in + 0.5))
-}
-
-// bucketBoundary returns the first value in the bucket.
-func bucketBoundary(bucket uint8) int64 {
- if bucket == 0 {
- return 0
- }
- return 1 << bucket
-}
-
-// bucketData holds data about a specific bucket for use in distTmpl.
-type bucketData struct {
- Lower, Upper int64
- N int64
- Pct, CumulativePct float64
- GraphWidth int
-}
-
-// data holds data about a Distribution for use in distTmpl.
-type data struct {
- Buckets []*bucketData
- Count, Median int64
- Mean, StandardDeviation float64
-}
-
-// maxHTMLBarWidth is the maximum width of the HTML bar for visualizing buckets.
-const maxHTMLBarWidth = 350.0
-
-// newData returns data representing h for use in distTmpl.
-func (h *histogram) newData() *data {
- // Force the allocation of buckets to simplify the rendering implementation
- h.allocateBuckets()
- // We scale the bars on the right so that the largest bar is
- // maxHTMLBarWidth pixels in width.
- maxBucket := int64(0)
- for _, n := range h.buckets {
- if n > maxBucket {
- maxBucket = n
- }
- }
- total := h.total()
- barsizeMult := maxHTMLBarWidth / float64(maxBucket)
- var pctMult float64
- if total == 0 {
- pctMult = 1.0
- } else {
- pctMult = 100.0 / float64(total)
- }
-
- buckets := make([]*bucketData, len(h.buckets))
- runningTotal := int64(0)
- for i, n := range h.buckets {
- if n == 0 {
- continue
- }
- runningTotal += n
- var upperBound int64
- if i < bucketCount-1 {
- upperBound = bucketBoundary(uint8(i + 1))
- } else {
- upperBound = math.MaxInt64
- }
- buckets[i] = &bucketData{
- Lower: bucketBoundary(uint8(i)),
- Upper: upperBound,
- N: n,
- Pct: float64(n) * pctMult,
- CumulativePct: float64(runningTotal) * pctMult,
- GraphWidth: int(float64(n) * barsizeMult),
- }
- }
- return &data{
- Buckets: buckets,
- Count: total,
- Median: h.median(),
- Mean: h.average(),
- StandardDeviation: h.standardDeviation(),
- }
-}
-
-func (h *histogram) html() template.HTML {
- buf := new(bytes.Buffer)
- if err := distTmpl().Execute(buf, h.newData()); err != nil {
- buf.Reset()
- log.Printf("net/trace: couldn't execute template: %v", err)
- }
- return template.HTML(buf.String())
-}
-
-var distTmplCache *template.Template
-var distTmplOnce sync.Once
-
-func distTmpl() *template.Template {
- distTmplOnce.Do(func() {
- // Input: data
- distTmplCache = template.Must(template.New("distTmpl").Parse(`
-<table>
-<tr>
- <td style="padding:0.25em">Count: {{.Count}}</td>
- <td style="padding:0.25em">Mean: {{printf "%.0f" .Mean}}</td>
- <td style="padding:0.25em">StdDev: {{printf "%.0f" .StandardDeviation}}</td>
- <td style="padding:0.25em">Median: {{.Median}}</td>
-</tr>
-</table>
-<hr>
-<table>
-{{range $b := .Buckets}}
-{{if $b}}
- <tr>
- <td style="padding:0 0 0 0.25em">[</td>
- <td style="text-align:right;padding:0 0.25em">{{.Lower}},</td>
- <td style="text-align:right;padding:0 0.25em">{{.Upper}})</td>
- <td style="text-align:right;padding:0 0.25em">{{.N}}</td>
- <td style="text-align:right;padding:0 0.25em">{{printf "%#.3f" .Pct}}%</td>
- <td style="text-align:right;padding:0 0.25em">{{printf "%#.3f" .CumulativePct}}%</td>
- <td><div style="background-color: blue; height: 1em; width: {{.GraphWidth}};"></div></td>
- </tr>
-{{end}}
-{{end}}
-</table>
-`))
- })
- return distTmplCache
-}
diff --git a/vendor/golang.org/x/net/trace/trace.go b/vendor/golang.org/x/net/trace/trace.go
deleted file mode 100644
index 64f56a373..000000000
--- a/vendor/golang.org/x/net/trace/trace.go
+++ /dev/null
@@ -1,1079 +0,0 @@
-// Copyright 2015 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-/*
-Package trace implements tracing of requests and long-lived objects.
-It exports HTTP interfaces on /debug/requests and /debug/events.
-
-A trace.Trace provides tracing for short-lived objects, usually requests.
-A request handler might be implemented like this:
-
- func fooHandler(w http.ResponseWriter, req *http.Request) {
- tr := trace.New("mypkg.Foo", req.URL.Path)
- defer tr.Finish()
- ...
- tr.LazyPrintf("some event %q happened", str)
- ...
- if err := somethingImportant(); err != nil {
- tr.LazyPrintf("somethingImportant failed: %v", err)
- tr.SetError()
- }
- }
-
-The /debug/requests HTTP endpoint organizes the traces by family,
-errors, and duration. It also provides histogram of request duration
-for each family.
-
-A trace.EventLog provides tracing for long-lived objects, such as RPC
-connections.
-
- // A Fetcher fetches URL paths for a single domain.
- type Fetcher struct {
- domain string
- events trace.EventLog
- }
-
- func NewFetcher(domain string) *Fetcher {
- return &Fetcher{
- domain,
- trace.NewEventLog("mypkg.Fetcher", domain),
- }
- }
-
- func (f *Fetcher) Fetch(path string) (string, error) {
- resp, err := http.Get("http://" + f.domain + "/" + path)
- if err != nil {
- f.events.Errorf("Get(%q) = %v", path, err)
- return "", err
- }
- f.events.Printf("Get(%q) = %s", path, resp.Status)
- ...
- }
-
- func (f *Fetcher) Close() error {
- f.events.Finish()
- return nil
- }
-
-The /debug/events HTTP endpoint organizes the event logs by family and
-by time since the last error. The expanded view displays recent log
-entries and the log's call stack.
-*/
-package trace // import "golang.org/x/net/trace"
-
-import (
- "bytes"
- "fmt"
- "html/template"
- "io"
- "log"
- "net"
- "net/http"
- "runtime"
- "sort"
- "strconv"
- "sync"
- "sync/atomic"
- "time"
-
- "golang.org/x/net/context"
- "golang.org/x/net/internal/timeseries"
-)
-
-// DebugUseAfterFinish controls whether to debug uses of Trace values after finishing.
-// FOR DEBUGGING ONLY. This will slow down the program.
-var DebugUseAfterFinish = false
-
-// AuthRequest determines whether a specific request is permitted to load the
-// /debug/requests or /debug/events pages.
-//
-// It returns two bools; the first indicates whether the page may be viewed at all,
-// and the second indicates whether sensitive events will be shown.
-//
-// AuthRequest may be replaced by a program to customize its authorization requirements.
-//
-// The default AuthRequest function returns (true, true) if and only if the request
-// comes from localhost/127.0.0.1/[::1].
-var AuthRequest = func(req *http.Request) (any, sensitive bool) {
- // RemoteAddr is commonly in the form "IP" or "IP:port".
- // If it is in the form "IP:port", split off the port.
- host, _, err := net.SplitHostPort(req.RemoteAddr)
- if err != nil {
- host = req.RemoteAddr
- }
- switch host {
- case "localhost", "127.0.0.1", "::1":
- return true, true
- default:
- return false, false
- }
-}
-
-func init() {
- http.HandleFunc("/debug/requests", func(w http.ResponseWriter, req *http.Request) {
- any, sensitive := AuthRequest(req)
- if !any {
- http.Error(w, "not allowed", http.StatusUnauthorized)
- return
- }
- w.Header().Set("Content-Type", "text/html; charset=utf-8")
- Render(w, req, sensitive)
- })
- http.HandleFunc("/debug/events", func(w http.ResponseWriter, req *http.Request) {
- any, sensitive := AuthRequest(req)
- if !any {
- http.Error(w, "not allowed", http.StatusUnauthorized)
- return
- }
- w.Header().Set("Content-Type", "text/html; charset=utf-8")
- RenderEvents(w, req, sensitive)
- })
-}
-
-// Render renders the HTML page typically served at /debug/requests.
-// It does not do any auth checking; see AuthRequest for the default auth check
-// used by the handler registered on http.DefaultServeMux.
-// req may be nil.
-func Render(w io.Writer, req *http.Request, sensitive bool) {
- data := &struct {
- Families []string
- ActiveTraceCount map[string]int
- CompletedTraces map[string]*family
-
- // Set when a bucket has been selected.
- Traces traceList
- Family string
- Bucket int
- Expanded bool
- Traced bool
- Active bool
- ShowSensitive bool // whether to show sensitive events
-
- Histogram template.HTML
- HistogramWindow string // e.g. "last minute", "last hour", "all time"
-
- // If non-zero, the set of traces is a partial set,
- // and this is the total number.
- Total int
- }{
- CompletedTraces: completedTraces,
- }
-
- data.ShowSensitive = sensitive
- if req != nil {
- // Allow show_sensitive=0 to force hiding of sensitive data for testing.
- // This only goes one way; you can't use show_sensitive=1 to see things.
- if req.FormValue("show_sensitive") == "0" {
- data.ShowSensitive = false
- }
-
- if exp, err := strconv.ParseBool(req.FormValue("exp")); err == nil {
- data.Expanded = exp
- }
- if exp, err := strconv.ParseBool(req.FormValue("rtraced")); err == nil {
- data.Traced = exp
- }
- }
-
- completedMu.RLock()
- data.Families = make([]string, 0, len(completedTraces))
- for fam := range completedTraces {
- data.Families = append(data.Families, fam)
- }
- completedMu.RUnlock()
- sort.Strings(data.Families)
-
- // We are careful here to minimize the time spent locking activeMu,
- // since that lock is required every time an RPC starts and finishes.
- data.ActiveTraceCount = make(map[string]int, len(data.Families))
- activeMu.RLock()
- for fam, s := range activeTraces {
- data.ActiveTraceCount[fam] = s.Len()
- }
- activeMu.RUnlock()
-
- var ok bool
- data.Family, data.Bucket, ok = parseArgs(req)
- switch {
- case !ok:
- // No-op
- case data.Bucket == -1:
- data.Active = true
- n := data.ActiveTraceCount[data.Family]
- data.Traces = getActiveTraces(data.Family)
- if len(data.Traces) < n {
- data.Total = n
- }
- case data.Bucket < bucketsPerFamily:
- if b := lookupBucket(data.Family, data.Bucket); b != nil {
- data.Traces = b.Copy(data.Traced)
- }
- default:
- if f := getFamily(data.Family, false); f != nil {
- var obs timeseries.Observable
- f.LatencyMu.RLock()
- switch o := data.Bucket - bucketsPerFamily; o {
- case 0:
- obs = f.Latency.Minute()
- data.HistogramWindow = "last minute"
- case 1:
- obs = f.Latency.Hour()
- data.HistogramWindow = "last hour"
- case 2:
- obs = f.Latency.Total()
- data.HistogramWindow = "all time"
- }
- f.LatencyMu.RUnlock()
- if obs != nil {
- data.Histogram = obs.(*histogram).html()
- }
- }
- }
-
- if data.Traces != nil {
- defer data.Traces.Free()
- sort.Sort(data.Traces)
- }
-
- completedMu.RLock()
- defer completedMu.RUnlock()
- if err := pageTmpl().ExecuteTemplate(w, "Page", data); err != nil {
- log.Printf("net/trace: Failed executing template: %v", err)
- }
-}
-
-func parseArgs(req *http.Request) (fam string, b int, ok bool) {
- if req == nil {
- return "", 0, false
- }
- fam, bStr := req.FormValue("fam"), req.FormValue("b")
- if fam == "" || bStr == "" {
- return "", 0, false
- }
- b, err := strconv.Atoi(bStr)
- if err != nil || b < -1 {
- return "", 0, false
- }
-
- return fam, b, true
-}
-
-func lookupBucket(fam string, b int) *traceBucket {
- f := getFamily(fam, false)
- if f == nil || b < 0 || b >= len(f.Buckets) {
- return nil
- }
- return f.Buckets[b]
-}
-
-type contextKeyT string
-
-var contextKey = contextKeyT("golang.org/x/net/trace.Trace")
-
-// NewContext returns a copy of the parent context
-// and associates it with a Trace.
-func NewContext(ctx context.Context, tr Trace) context.Context {
- return context.WithValue(ctx, contextKey, tr)
-}
-
-// FromContext returns the Trace bound to the context, if any.
-func FromContext(ctx context.Context) (tr Trace, ok bool) {
- tr, ok = ctx.Value(contextKey).(Trace)
- return
-}
-
-// Trace represents an active request.
-type Trace interface {
- // LazyLog adds x to the event log. It will be evaluated each time the
- // /debug/requests page is rendered. Any memory referenced by x will be
- // pinned until the trace is finished and later discarded.
- LazyLog(x fmt.Stringer, sensitive bool)
-
- // LazyPrintf evaluates its arguments with fmt.Sprintf each time the
- // /debug/requests page is rendered. Any memory referenced by a will be
- // pinned until the trace is finished and later discarded.
- LazyPrintf(format string, a ...interface{})
-
- // SetError declares that this trace resulted in an error.
- SetError()
-
- // SetRecycler sets a recycler for the trace.
- // f will be called for each event passed to LazyLog at a time when
- // it is no longer required, whether while the trace is still active
- // and the event is discarded, or when a completed trace is discarded.
- SetRecycler(f func(interface{}))
-
- // SetTraceInfo sets the trace info for the trace.
- // This is currently unused.
- SetTraceInfo(traceID, spanID uint64)
-
- // SetMaxEvents sets the maximum number of events that will be stored
- // in the trace. This has no effect if any events have already been
- // added to the trace.
- SetMaxEvents(m int)
-
- // Finish declares that this trace is complete.
- // The trace should not be used after calling this method.
- Finish()
-}
-
-type lazySprintf struct {
- format string
- a []interface{}
-}
-
-func (l *lazySprintf) String() string {
- return fmt.Sprintf(l.format, l.a...)
-}
-
-// New returns a new Trace with the specified family and title.
-func New(family, title string) Trace {
- tr := newTrace()
- tr.ref()
- tr.Family, tr.Title = family, title
- tr.Start = time.Now()
- tr.maxEvents = maxEventsPerTrace
- tr.events = tr.eventsBuf[:0]
-
- activeMu.RLock()
- s := activeTraces[tr.Family]
- activeMu.RUnlock()
- if s == nil {
- activeMu.Lock()
- s = activeTraces[tr.Family] // check again
- if s == nil {
- s = new(traceSet)
- activeTraces[tr.Family] = s
- }
- activeMu.Unlock()
- }
- s.Add(tr)
-
- // Trigger allocation of the completed trace structure for this family.
- // This will cause the family to be present in the request page during
- // the first trace of this family. We don't care about the return value,
- // nor is there any need for this to run inline, so we execute it in its
- // own goroutine, but only if the family isn't allocated yet.
- completedMu.RLock()
- if _, ok := completedTraces[tr.Family]; !ok {
- go allocFamily(tr.Family)
- }
- completedMu.RUnlock()
-
- return tr
-}
-
-func (tr *trace) Finish() {
- tr.Elapsed = time.Now().Sub(tr.Start)
- if DebugUseAfterFinish {
- buf := make([]byte, 4<<10) // 4 KB should be enough
- n := runtime.Stack(buf, false)
- tr.finishStack = buf[:n]
- }
-
- activeMu.RLock()
- m := activeTraces[tr.Family]
- activeMu.RUnlock()
- m.Remove(tr)
-
- f := getFamily(tr.Family, true)
- for _, b := range f.Buckets {
- if b.Cond.match(tr) {
- b.Add(tr)
- }
- }
- // Add a sample of elapsed time as microseconds to the family's timeseries
- h := new(histogram)
- h.addMeasurement(tr.Elapsed.Nanoseconds() / 1e3)
- f.LatencyMu.Lock()
- f.Latency.Add(h)
- f.LatencyMu.Unlock()
-
- tr.unref() // matches ref in New
-}
-
-const (
- bucketsPerFamily = 9
- tracesPerBucket = 10
- maxActiveTraces = 20 // Maximum number of active traces to show.
- maxEventsPerTrace = 10
- numHistogramBuckets = 38
-)
-
-var (
- // The active traces.
- activeMu sync.RWMutex
- activeTraces = make(map[string]*traceSet) // family -> traces
-
- // Families of completed traces.
- completedMu sync.RWMutex
- completedTraces = make(map[string]*family) // family -> traces
-)
-
-type traceSet struct {
- mu sync.RWMutex
- m map[*trace]bool
-
- // We could avoid the entire map scan in FirstN by having a slice of all the traces
- // ordered by start time, and an index into that from the trace struct, with a periodic
- // repack of the slice after enough traces finish; we could also use a skip list or similar.
- // However, that would shift some of the expense from /debug/requests time to RPC time,
- // which is probably the wrong trade-off.
-}
-
-func (ts *traceSet) Len() int {
- ts.mu.RLock()
- defer ts.mu.RUnlock()
- return len(ts.m)
-}
-
-func (ts *traceSet) Add(tr *trace) {
- ts.mu.Lock()
- if ts.m == nil {
- ts.m = make(map[*trace]bool)
- }
- ts.m[tr] = true
- ts.mu.Unlock()
-}
-
-func (ts *traceSet) Remove(tr *trace) {
- ts.mu.Lock()
- delete(ts.m, tr)
- ts.mu.Unlock()
-}
-
-// FirstN returns the first n traces ordered by time.
-func (ts *traceSet) FirstN(n int) traceList {
- ts.mu.RLock()
- defer ts.mu.RUnlock()
-
- if n > len(ts.m) {
- n = len(ts.m)
- }
- trl := make(traceList, 0, n)
-
- // Fast path for when no selectivity is needed.
- if n == len(ts.m) {
- for tr := range ts.m {
- tr.ref()
- trl = append(trl, tr)
- }
- sort.Sort(trl)
- return trl
- }
-
- // Pick the oldest n traces.
- // This is inefficient. See the comment in the traceSet struct.
- for tr := range ts.m {
- // Put the first n traces into trl in the order they occur.
- // When we have n, sort trl, and thereafter maintain its order.
- if len(trl) < n {
- tr.ref()
- trl = append(trl, tr)
- if len(trl) == n {
- // This is guaranteed to happen exactly once during this loop.
- sort.Sort(trl)
- }
- continue
- }
- if tr.Start.After(trl[n-1].Start) {
- continue
- }
-
- // Find where to insert this one.
- tr.ref()
- i := sort.Search(n, func(i int) bool { return trl[i].Start.After(tr.Start) })
- trl[n-1].unref()
- copy(trl[i+1:], trl[i:])
- trl[i] = tr
- }
-
- return trl
-}
-
-func getActiveTraces(fam string) traceList {
- activeMu.RLock()
- s := activeTraces[fam]
- activeMu.RUnlock()
- if s == nil {
- return nil
- }
- return s.FirstN(maxActiveTraces)
-}
-
-func getFamily(fam string, allocNew bool) *family {
- completedMu.RLock()
- f := completedTraces[fam]
- completedMu.RUnlock()
- if f == nil && allocNew {
- f = allocFamily(fam)
- }
- return f
-}
-
-func allocFamily(fam string) *family {
- completedMu.Lock()
- defer completedMu.Unlock()
- f := completedTraces[fam]
- if f == nil {
- f = newFamily()
- completedTraces[fam] = f
- }
- return f
-}
-
-// family represents a set of trace buckets and associated latency information.
-type family struct {
- // traces may occur in multiple buckets.
- Buckets [bucketsPerFamily]*traceBucket
-
- // latency time series
- LatencyMu sync.RWMutex
- Latency *timeseries.MinuteHourSeries
-}
-
-func newFamily() *family {
- return &family{
- Buckets: [bucketsPerFamily]*traceBucket{
- {Cond: minCond(0)},
- {Cond: minCond(50 * time.Millisecond)},
- {Cond: minCond(100 * time.Millisecond)},
- {Cond: minCond(200 * time.Millisecond)},
- {Cond: minCond(500 * time.Millisecond)},
- {Cond: minCond(1 * time.Second)},
- {Cond: minCond(10 * time.Second)},
- {Cond: minCond(100 * time.Second)},
- {Cond: errorCond{}},
- },
- Latency: timeseries.NewMinuteHourSeries(func() timeseries.Observable { return new(histogram) }),
- }
-}
-
-// traceBucket represents a size-capped bucket of historic traces,
-// along with a condition for a trace to belong to the bucket.
-type traceBucket struct {
- Cond cond
-
- // Ring buffer implementation of a fixed-size FIFO queue.
- mu sync.RWMutex
- buf [tracesPerBucket]*trace
- start int // < tracesPerBucket
- length int // <= tracesPerBucket
-}
-
-func (b *traceBucket) Add(tr *trace) {
- b.mu.Lock()
- defer b.mu.Unlock()
-
- i := b.start + b.length
- if i >= tracesPerBucket {
- i -= tracesPerBucket
- }
- if b.length == tracesPerBucket {
- // "Remove" an element from the bucket.
- b.buf[i].unref()
- b.start++
- if b.start == tracesPerBucket {
- b.start = 0
- }
- }
- b.buf[i] = tr
- if b.length < tracesPerBucket {
- b.length++
- }
- tr.ref()
-}
-
-// Copy returns a copy of the traces in the bucket.
-// If tracedOnly is true, only the traces with trace information will be returned.
-// The logs will be ref'd before returning; the caller should call
-// the Free method when it is done with them.
-// TODO(dsymonds): keep track of traced requests in separate buckets.
-func (b *traceBucket) Copy(tracedOnly bool) traceList {
- b.mu.RLock()
- defer b.mu.RUnlock()
-
- trl := make(traceList, 0, b.length)
- for i, x := 0, b.start; i < b.length; i++ {
- tr := b.buf[x]
- if !tracedOnly || tr.spanID != 0 {
- tr.ref()
- trl = append(trl, tr)
- }
- x++
- if x == b.length {
- x = 0
- }
- }
- return trl
-}
-
-func (b *traceBucket) Empty() bool {
- b.mu.RLock()
- defer b.mu.RUnlock()
- return b.length == 0
-}
-
-// cond represents a condition on a trace.
-type cond interface {
- match(t *trace) bool
- String() string
-}
-
-type minCond time.Duration
-
-func (m minCond) match(t *trace) bool { return t.Elapsed >= time.Duration(m) }
-func (m minCond) String() string { return fmt.Sprintf("≥%gs", time.Duration(m).Seconds()) }
-
-type errorCond struct{}
-
-func (e errorCond) match(t *trace) bool { return t.IsError }
-func (e errorCond) String() string { return "errors" }
-
-type traceList []*trace
-
-// Free calls unref on each element of the list.
-func (trl traceList) Free() {
- for _, t := range trl {
- t.unref()
- }
-}
-
-// traceList may be sorted in reverse chronological order.
-func (trl traceList) Len() int { return len(trl) }
-func (trl traceList) Less(i, j int) bool { return trl[i].Start.After(trl[j].Start) }
-func (trl traceList) Swap(i, j int) { trl[i], trl[j] = trl[j], trl[i] }
-
-// An event is a timestamped log entry in a trace.
-type event struct {
- When time.Time
- Elapsed time.Duration // since previous event in trace
- NewDay bool // whether this event is on a different day to the previous event
- Recyclable bool // whether this event was passed via LazyLog
- Sensitive bool // whether this event contains sensitive information
- What interface{} // string or fmt.Stringer
-}
-
-// WhenString returns a string representation of the elapsed time of the event.
-// It will include the date if midnight was crossed.
-func (e event) WhenString() string {
- if e.NewDay {
- return e.When.Format("2006/01/02 15:04:05.000000")
- }
- return e.When.Format("15:04:05.000000")
-}
-
-// discarded represents a number of discarded events.
-// It is stored as *discarded to make it easier to update in-place.
-type discarded int
-
-func (d *discarded) String() string {
- return fmt.Sprintf("(%d events discarded)", int(*d))
-}
-
-// trace represents an active or complete request,
-// either sent or received by this program.
-type trace struct {
- // Family is the top-level grouping of traces to which this belongs.
- Family string
-
- // Title is the title of this trace.
- Title string
-
- // Timing information.
- Start time.Time
- Elapsed time.Duration // zero while active
-
- // Trace information if non-zero.
- traceID uint64
- spanID uint64
-
- // Whether this trace resulted in an error.
- IsError bool
-
- // Append-only sequence of events (modulo discards).
- mu sync.RWMutex
- events []event
- maxEvents int
-
- refs int32 // how many buckets this is in
- recycler func(interface{})
- disc discarded // scratch space to avoid allocation
-
- finishStack []byte // where finish was called, if DebugUseAfterFinish is set
-
- eventsBuf [4]event // preallocated buffer in case we only log a few events
-}
-
-func (tr *trace) reset() {
- // Clear all but the mutex. Mutexes may not be copied, even when unlocked.
- tr.Family = ""
- tr.Title = ""
- tr.Start = time.Time{}
- tr.Elapsed = 0
- tr.traceID = 0
- tr.spanID = 0
- tr.IsError = false
- tr.maxEvents = 0
- tr.events = nil
- tr.refs = 0
- tr.recycler = nil
- tr.disc = 0
- tr.finishStack = nil
- for i := range tr.eventsBuf {
- tr.eventsBuf[i] = event{}
- }
-}
-
-// delta returns the elapsed time since the last event or the trace start,
-// and whether it spans midnight.
-// L >= tr.mu
-func (tr *trace) delta(t time.Time) (time.Duration, bool) {
- if len(tr.events) == 0 {
- return t.Sub(tr.Start), false
- }
- prev := tr.events[len(tr.events)-1].When
- return t.Sub(prev), prev.Day() != t.Day()
-}
-
-func (tr *trace) addEvent(x interface{}, recyclable, sensitive bool) {
- if DebugUseAfterFinish && tr.finishStack != nil {
- buf := make([]byte, 4<<10) // 4 KB should be enough
- n := runtime.Stack(buf, false)
- log.Printf("net/trace: trace used after finish:\nFinished at:\n%s\nUsed at:\n%s", tr.finishStack, buf[:n])
- }
-
- /*
- NOTE TO DEBUGGERS
-
- If you are here because your program panicked in this code,
- it is almost definitely the fault of code using this package,
- and very unlikely to be the fault of this code.
-
- The most likely scenario is that some code elsewhere is using
- a trace.Trace after its Finish method is called.
- You can temporarily set the DebugUseAfterFinish var
- to help discover where that is; do not leave that var set,
- since it makes this package much less efficient.
- */
-
- e := event{When: time.Now(), What: x, Recyclable: recyclable, Sensitive: sensitive}
- tr.mu.Lock()
- e.Elapsed, e.NewDay = tr.delta(e.When)
- if len(tr.events) < tr.maxEvents {
- tr.events = append(tr.events, e)
- } else {
- // Discard the middle events.
- di := int((tr.maxEvents - 1) / 2)
- if d, ok := tr.events[di].What.(*discarded); ok {
- (*d)++
- } else {
- // disc starts at two to count for the event it is replacing,
- // plus the next one that we are about to drop.
- tr.disc = 2
- if tr.recycler != nil && tr.events[di].Recyclable {
- go tr.recycler(tr.events[di].What)
- }
- tr.events[di].What = &tr.disc
- }
- // The timestamp of the discarded meta-event should be
- // the time of the last event it is representing.
- tr.events[di].When = tr.events[di+1].When
-
- if tr.recycler != nil && tr.events[di+1].Recyclable {
- go tr.recycler(tr.events[di+1].What)
- }
- copy(tr.events[di+1:], tr.events[di+2:])
- tr.events[tr.maxEvents-1] = e
- }
- tr.mu.Unlock()
-}
-
-func (tr *trace) LazyLog(x fmt.Stringer, sensitive bool) {
- tr.addEvent(x, true, sensitive)
-}
-
-func (tr *trace) LazyPrintf(format string, a ...interface{}) {
- tr.addEvent(&lazySprintf{format, a}, false, false)
-}
-
-func (tr *trace) SetError() { tr.IsError = true }
-
-func (tr *trace) SetRecycler(f func(interface{})) {
- tr.recycler = f
-}
-
-func (tr *trace) SetTraceInfo(traceID, spanID uint64) {
- tr.traceID, tr.spanID = traceID, spanID
-}
-
-func (tr *trace) SetMaxEvents(m int) {
- // Always keep at least three events: first, discarded count, last.
- if len(tr.events) == 0 && m > 3 {
- tr.maxEvents = m
- }
-}
-
-func (tr *trace) ref() {
- atomic.AddInt32(&tr.refs, 1)
-}
-
-func (tr *trace) unref() {
- if atomic.AddInt32(&tr.refs, -1) == 0 {
- if tr.recycler != nil {
- // freeTrace clears tr, so we hold tr.recycler and tr.events here.
- go func(f func(interface{}), es []event) {
- for _, e := range es {
- if e.Recyclable {
- f(e.What)
- }
- }
- }(tr.recycler, tr.events)
- }
-
- freeTrace(tr)
- }
-}
-
-func (tr *trace) When() string {
- return tr.Start.Format("2006/01/02 15:04:05.000000")
-}
-
-func (tr *trace) ElapsedTime() string {
- t := tr.Elapsed
- if t == 0 {
- // Active trace.
- t = time.Since(tr.Start)
- }
- return fmt.Sprintf("%.6f", t.Seconds())
-}
-
-func (tr *trace) Events() []event {
- tr.mu.RLock()
- defer tr.mu.RUnlock()
- return tr.events
-}
-
-var traceFreeList = make(chan *trace, 1000) // TODO(dsymonds): Use sync.Pool?
-
-// newTrace returns a trace ready to use.
-func newTrace() *trace {
- select {
- case tr := <-traceFreeList:
- return tr
- default:
- return new(trace)
- }
-}
-
-// freeTrace adds tr to traceFreeList if there's room.
-// This is non-blocking.
-func freeTrace(tr *trace) {
- if DebugUseAfterFinish {
- return // never reuse
- }
- tr.reset()
- select {
- case traceFreeList <- tr:
- default:
- }
-}
-
-func elapsed(d time.Duration) string {
- b := []byte(fmt.Sprintf("%.6f", d.Seconds()))
-
- // For subsecond durations, blank all zeros before decimal point,
- // and all zeros between the decimal point and the first non-zero digit.
- if d < time.Second {
- dot := bytes.IndexByte(b, '.')
- for i := 0; i < dot; i++ {
- b[i] = ' '
- }
- for i := dot + 1; i < len(b); i++ {
- if b[i] == '0' {
- b[i] = ' '
- } else {
- break
- }
- }
- }
-
- return string(b)
-}
-
-var pageTmplCache *template.Template
-var pageTmplOnce sync.Once
-
-func pageTmpl() *template.Template {
- pageTmplOnce.Do(func() {
- pageTmplCache = template.Must(template.New("Page").Funcs(template.FuncMap{
- "elapsed": elapsed,
- "add": func(a, b int) int { return a + b },
- }).Parse(pageHTML))
- })
- return pageTmplCache
-}
-
-const pageHTML = `
-{{template "Prolog" .}}
-{{template "StatusTable" .}}
-{{template "Epilog" .}}
-
-{{define "Prolog"}}
-<html>
- <head>
- <title>/debug/requests</title>
- <style type="text/css">
- body {
- font-family: sans-serif;
- }
- table#tr-status td.family {
- padding-right: 2em;
- }
- table#tr-status td.active {
- padding-right: 1em;
- }
- table#tr-status td.latency-first {
- padding-left: 1em;
- }
- table#tr-status td.empty {
- color: #aaa;
- }
- table#reqs {
- margin-top: 1em;
- }
- table#reqs tr.first {
- {{if $.Expanded}}font-weight: bold;{{end}}
- }
- table#reqs td {
- font-family: monospace;
- }
- table#reqs td.when {
- text-align: right;
- white-space: nowrap;
- }
- table#reqs td.elapsed {
- padding: 0 0.5em;
- text-align: right;
- white-space: pre;
- width: 10em;
- }
- address {
- font-size: smaller;
- margin-top: 5em;
- }
- </style>
- </head>
- <body>
-
-<h1>/debug/requests</h1>
-{{end}} {{/* end of Prolog */}}
-
-{{define "StatusTable"}}
-<table id="tr-status">
- {{range $fam := .Families}}
- <tr>
- <td class="family">{{$fam}}</td>
-
- {{$n := index $.ActiveTraceCount $fam}}
- <td class="active {{if not $n}}empty{{end}}">
- {{if $n}}<a href="?fam={{$fam}}&b=-1{{if $.Expanded}}&exp=1{{end}}">{{end}}
- [{{$n}} active]
- {{if $n}}</a>{{end}}
- </td>
-
- {{$f := index $.CompletedTraces $fam}}
- {{range $i, $b := $f.Buckets}}
- {{$empty := $b.Empty}}
- <td {{if $empty}}class="empty"{{end}}>
- {{if not $empty}}<a href="?fam={{$fam}}&b={{$i}}{{if $.Expanded}}&exp=1{{end}}">{{end}}
- [{{.Cond}}]
- {{if not $empty}}</a>{{end}}
- </td>
- {{end}}
-
- {{$nb := len $f.Buckets}}
- <td class="latency-first">
- <a href="?fam={{$fam}}&b={{$nb}}">[minute]</a>
- </td>
- <td>
- <a href="?fam={{$fam}}&b={{add $nb 1}}">[hour]</a>
- </td>
- <td>
- <a href="?fam={{$fam}}&b={{add $nb 2}}">[total]</a>
- </td>
-
- </tr>
- {{end}}
-</table>
-{{end}} {{/* end of StatusTable */}}
-
-{{define "Epilog"}}
-{{if $.Traces}}
-<hr />
-<h3>Family: {{$.Family}}</h3>
-
-{{if or $.Expanded $.Traced}}
- <a href="?fam={{$.Family}}&b={{$.Bucket}}">[Normal/Summary]</a>
-{{else}}
- [Normal/Summary]
-{{end}}
-
-{{if or (not $.Expanded) $.Traced}}
- <a href="?fam={{$.Family}}&b={{$.Bucket}}&exp=1">[Normal/Expanded]</a>
-{{else}}
- [Normal/Expanded]
-{{end}}
-
-{{if not $.Active}}
- {{if or $.Expanded (not $.Traced)}}
- <a href="?fam={{$.Family}}&b={{$.Bucket}}&rtraced=1">[Traced/Summary]</a>
- {{else}}
- [Traced/Summary]
- {{end}}
- {{if or (not $.Expanded) (not $.Traced)}}
- <a href="?fam={{$.Family}}&b={{$.Bucket}}&exp=1&rtraced=1">[Traced/Expanded]</a>
- {{else}}
- [Traced/Expanded]
- {{end}}
-{{end}}
-
-{{if $.Total}}
-<p><em>Showing <b>{{len $.Traces}}</b> of <b>{{$.Total}}</b> traces.</em></p>
-{{end}}
-
-<table id="reqs">
- <caption>
- {{if $.Active}}Active{{else}}Completed{{end}} Requests
- </caption>
- <tr><th>When</th><th>Elapsed&nbsp;(s)</th></tr>
- {{range $tr := $.Traces}}
- <tr class="first">
- <td class="when">{{$tr.When}}</td>
- <td class="elapsed">{{$tr.ElapsedTime}}</td>
- <td>{{$tr.Title}}</td>
- {{/* TODO: include traceID/spanID */}}
- </tr>
- {{if $.Expanded}}
- {{range $tr.Events}}
- <tr>
- <td class="when">{{.WhenString}}</td>
- <td class="elapsed">{{elapsed .Elapsed}}</td>
- <td>{{if or $.ShowSensitive (not .Sensitive)}}... {{.What}}{{else}}<em>[redacted]</em>{{end}}</td>
- </tr>
- {{end}}
- {{end}}
- {{end}}
-</table>
-{{end}} {{/* if $.Traces */}}
-
-{{if $.Histogram}}
-<h4>Latency (&micro;s) of {{$.Family}} over {{$.HistogramWindow}}</h4>
-{{$.Histogram}}
-{{end}} {{/* if $.Histogram */}}
-
- </body>
-</html>
-{{end}} {{/* end of Epilog */}}
-`