annotation_test.go

     1  // Copyright 2018 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package trace_test
     6  
     7  import (
     8  	"context"
     9  	"io"
    10  	. "runtime/trace"
    11  	"testing"
    12  )
    13  
    14  func BenchmarkStartRegion(b *testing.B) {
    15  	b.ReportAllocs()
    16  	ctx, task := NewTask(context.Background(), "benchmark")
    17  	defer task.End()
    18  
    19  	b.RunParallel(func(pb *testing.PB) {
    20  		for pb.Next() {
    21  			StartRegion(ctx, "region").End()
    22  		}
    23  	})
    24  }
    25  
    26  func BenchmarkNewTask(b *testing.B) {
    27  	b.ReportAllocs()
    28  	pctx, task := NewTask(context.Background(), "benchmark")
    29  	defer task.End()
    30  
    31  	b.RunParallel(func(pb *testing.PB) {
    32  		for pb.Next() {
    33  			_, task := NewTask(pctx, "task")
    34  			task.End()
    35  		}
    36  	})
    37  }
    38  
    39  func BenchmarkLog(b *testing.B) {
    40  	b.ReportAllocs()
    41  
    42  	Start(io.Discard)
    43  	defer Stop()
    44  
    45  	ctx := context.Background()
    46  	for b.Loop() {
    47  		Log(ctx, "", "")
    48  	}
    49  }
    50
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