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13c2bf6 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 | // Copyright 2023 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.
// Tests simply starting and stopping tracing multiple times.
//
// This is useful for finding bugs in trace state reset.
//go:build ignore
package main
import (
"bytes"
"log"
"os"
"runtime"
"runtime/trace"
)
func main() {
// Trace a few times.
for i := 0; i < 10; i++ {
var buf bytes.Buffer
if err := trace.Start(&buf); err != nil {
log.Fatalf("failed to start tracing: %v", err)
}
runtime.GC()
trace.Stop()
}
// Start tracing again, this time writing out the result.
if err := trace.Start(os.Stdout); err != nil {
log.Fatalf("failed to start tracing: %v", err)
}
runtime.GC()
trace.Stop()
}
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