| Linux in-mum-web1499.main-hosting.eu 5.14.0-503.40.1.el9_5.x86_64 #1 SMP PREEMPT_DYNAMIC Mon May 5 06:06:04 EDT 2025 x86_64 Path : /opt/golang/1.22.0/src/runtime/testdata/testprogcgo/ |
| Current File : //opt/golang/1.22.0/src/runtime/testdata/testprogcgo/gprof.go |
// Copyright 2021 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.
package main
// Test taking a goroutine profile with C traceback.
/*
// Defined in gprof_c.c.
void CallGoSleep(void);
void gprofCgoTraceback(void* parg);
void gprofCgoContext(void* parg);
*/
import "C"
import (
"fmt"
"io"
"runtime"
"runtime/pprof"
"time"
"unsafe"
)
func init() {
register("GoroutineProfile", GoroutineProfile)
}
func GoroutineProfile() {
runtime.SetCgoTraceback(0, unsafe.Pointer(C.gprofCgoTraceback), unsafe.Pointer(C.gprofCgoContext), nil)
go C.CallGoSleep()
go C.CallGoSleep()
go C.CallGoSleep()
time.Sleep(1 * time.Second)
prof := pprof.Lookup("goroutine")
prof.WriteTo(io.Discard, 1)
fmt.Println("OK")
}
//export GoSleep
func GoSleep() {
time.Sleep(time.Hour)
}