56 lines
1.1 KiB
Go
56 lines
1.1 KiB
Go
// Copyright 2016 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 that SIGPROF received in C code does not crash the process
|
|
// looking for the C code's func pointer.
|
|
|
|
// This is a regression test for issue 14599, where profiling fails when the
|
|
// function is the first C function. Exported functions are the first C
|
|
// functions, so we use an exported function. Exported functions are created in
|
|
// lexicographical order of source files, so this file is named aprof.go to
|
|
// ensure its function is first.
|
|
|
|
// extern void CallGoNop();
|
|
import "C"
|
|
|
|
import (
|
|
"bytes"
|
|
"fmt"
|
|
"runtime/pprof"
|
|
"time"
|
|
)
|
|
|
|
func init() {
|
|
register("CgoCCodeSIGPROF", CgoCCodeSIGPROF)
|
|
}
|
|
|
|
//export GoNop
|
|
func GoNop() {}
|
|
|
|
func CgoCCodeSIGPROF() {
|
|
c := make(chan bool)
|
|
go func() {
|
|
<-c
|
|
start := time.Now()
|
|
for i := 0; i < 1e7; i++ {
|
|
if i%1000 == 0 {
|
|
if time.Since(start) > time.Second {
|
|
break
|
|
}
|
|
}
|
|
C.CallGoNop()
|
|
}
|
|
c <- true
|
|
}()
|
|
|
|
var buf bytes.Buffer
|
|
pprof.StartCPUProfile(&buf)
|
|
c <- true
|
|
<-c
|
|
pprof.StopCPUProfile()
|
|
|
|
fmt.Println("OK")
|
|
}
|