| // 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) |
| } |