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// Copyright (c) 2019 The Jaeger Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package jaeger
import "sync"
// SpanAllocator abstraction of managign span allocations
type SpanAllocator interface {
Get() *Span
Put(*Span)
}
type syncPollSpanAllocator struct {
spanPool sync.Pool
}
func newSyncPollSpanAllocator() SpanAllocator {
return &syncPollSpanAllocator{
spanPool: sync.Pool{New: func() interface{} {
return &Span{}
}},
}
}
func (pool *syncPollSpanAllocator) Get() *Span {
return pool.spanPool.Get().(*Span)
}
func (pool *syncPollSpanAllocator) Put(span *Span) {
span.reset()
pool.spanPool.Put(span)
}
type simpleSpanAllocator struct{}
func (pool simpleSpanAllocator) Get() *Span {
return &Span{}
}
func (pool simpleSpanAllocator) Put(span *Span) {
// @comment https://github.com/jaegertracing/jaeger-client-go/pull/381#issuecomment-475904351
// since finished spans are not reused, no need to reset them
// span.reset()
}
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