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