diff options
author | Valentin Rothberg <rothberg@redhat.com> | 2020-07-31 09:27:21 +0200 |
---|---|---|
committer | Valentin Rothberg <rothberg@redhat.com> | 2020-09-08 08:47:19 +0200 |
commit | 7fea46752cbfb0ef7bfdd694afe95038c9875212 (patch) | |
tree | cabd8c0ea232c36cfff7511cb1b1f3bfa30c0bbf /vendor/golang.org/x/sys/cpu/cpu.go | |
parent | be7778df6c70227dab760ea92637ed97dad29641 (diff) | |
download | podman-7fea46752cbfb0ef7bfdd694afe95038c9875212.tar.gz podman-7fea46752cbfb0ef7bfdd694afe95038c9875212.tar.bz2 podman-7fea46752cbfb0ef7bfdd694afe95038c9875212.zip |
support multi-image (docker) archives
Support loading and saving tarballs with more than one image.
Add a new `/libpod/images/export` endpoint to the rest API to
allow for exporting/saving multiple images into an archive.
Note that a non-release version of containers/image is vendored.
A release version must be vendored before cutting a new Podman
release. We force the containers/image version via a replace in
the go.mod file; this way go won't try to match the versions.
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
Diffstat (limited to 'vendor/golang.org/x/sys/cpu/cpu.go')
-rw-r--r-- | vendor/golang.org/x/sys/cpu/cpu.go | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/vendor/golang.org/x/sys/cpu/cpu.go b/vendor/golang.org/x/sys/cpu/cpu.go index e44deb757..5cce25ed9 100644 --- a/vendor/golang.org/x/sys/cpu/cpu.go +++ b/vendor/golang.org/x/sys/cpu/cpu.go @@ -6,6 +6,11 @@ // various CPU architectures. package cpu +import ( + "os" + "strings" +) + // Initialized reports whether the CPU features were initialized. // // For some GOOS/GOARCH combinations initialization of the CPU features depends @@ -169,3 +174,94 @@ var S390X struct { HasVXE bool // vector-enhancements facility 1 _ CacheLinePad } + +func init() { + archInit() + initOptions() + processOptions() +} + +// options contains the cpu debug options that can be used in GODEBUG. +// Options are arch dependent and are added by the arch specific initOptions functions. +// Features that are mandatory for the specific GOARCH should have the Required field set +// (e.g. SSE2 on amd64). +var options []option + +// Option names should be lower case. e.g. avx instead of AVX. +type option struct { + Name string + Feature *bool + Specified bool // whether feature value was specified in GODEBUG + Enable bool // whether feature should be enabled + Required bool // whether feature is mandatory and can not be disabled +} + +func processOptions() { + env := os.Getenv("GODEBUG") +field: + for env != "" { + field := "" + i := strings.IndexByte(env, ',') + if i < 0 { + field, env = env, "" + } else { + field, env = env[:i], env[i+1:] + } + if len(field) < 4 || field[:4] != "cpu." { + continue + } + i = strings.IndexByte(field, '=') + if i < 0 { + print("GODEBUG sys/cpu: no value specified for \"", field, "\"\n") + continue + } + key, value := field[4:i], field[i+1:] // e.g. "SSE2", "on" + + var enable bool + switch value { + case "on": + enable = true + case "off": + enable = false + default: + print("GODEBUG sys/cpu: value \"", value, "\" not supported for cpu option \"", key, "\"\n") + continue field + } + + if key == "all" { + for i := range options { + options[i].Specified = true + options[i].Enable = enable || options[i].Required + } + continue field + } + + for i := range options { + if options[i].Name == key { + options[i].Specified = true + options[i].Enable = enable + continue field + } + } + + print("GODEBUG sys/cpu: unknown cpu feature \"", key, "\"\n") + } + + for _, o := range options { + if !o.Specified { + continue + } + + if o.Enable && !*o.Feature { + print("GODEBUG sys/cpu: can not enable \"", o.Name, "\", missing CPU support\n") + continue + } + + if !o.Enable && o.Required { + print("GODEBUG sys/cpu: can not disable \"", o.Name, "\", required CPU feature\n") + continue + } + + *o.Feature = o.Enable + } +} |