Gecko [ 167.86.127.34 ]

Name	Size	Permission
windows	[ DIR ]	drwxr-xr-x
aprof.go	947 B	-rw-r--r--
bigstack_windows.c	1.2 KB	-rw-r--r--
bigstack_windows.go	578 B	-rw-r--r--
callback.go	1.38 KB	-rw-r--r--
catchpanic.go	963 B	-rw-r--r--
cgo.go	1.82 KB	-rw-r--r--
crash.go	743 B	-rw-r--r--
deadlock.go	509 B	-rw-r--r--
dll_windows.go	459 B	-rw-r--r--
dropm.go	1.02 KB	-rw-r--r--
dropm_stub.go	333 B	-rw-r--r--
exec.go	2.06 KB	-rw-r--r--
lockosthread.c	301 B	-rw-r--r--
lockosthread.go	2.56 KB	-rw-r--r--
main.go	651 B	-rw-r--r--
numgoroutine.go	1.89 KB	-rw-r--r--
pprof.go	1.88 KB	-rw-r--r--
raceprof.go	1.68 KB	-rw-r--r--
racesig.go	1.89 KB	-rw-r--r--
sigpanic.go	484 B	-rw-r--r--
sigstack.go	2.06 KB	-rw-r--r--
stack_windows.go	987 B	-rw-r--r--
threadpanic.go	410 B	-rw-r--r--
threadpanic_unix.c	435 B	-rw-r--r--
threadpanic_windows.c	435 B	-rw-r--r--
threadpprof.go	2.36 KB	-rw-r--r--
threadprof.go	2.11 KB	-rw-r--r--
traceback.go	1.42 KB	-rw-r--r--
tracebackctxt.go	2.17 KB	-rw-r--r--
tracebackctxt_c.c	2.02 KB	-rw-r--r--

Code Editor : raceprof.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.

// +build linux,amd64 freebsd,amd64

package main

// Test that we can collect a lot of colliding profiling signals from
// an external C thread. This used to fail when built with the race
// detector, because a call of the predeclared function copy was
// turned into a call to runtime.slicecopy, which is not marked nosplit.

/*
#include <signal.h>
#include <stdint.h>
#include <pthread.h>
#include <sched.h>

struct cgoTracebackArg {
	uintptr_t  context;
	uintptr_t  sigContext;
	uintptr_t* buf;
	uintptr_t  max;
};

static int raceprofCount;

// We want a bunch of different profile stacks that collide in the
// hash table maintained in runtime/cpuprof.go. This code knows the
// size of the hash table (1 << 10) and knows that the hash function
// is simply multiplicative.
void raceprofTraceback(void* parg) {
	struct cgoTracebackArg* arg = (struct cgoTracebackArg*)(parg);
	raceprofCount++;
	arg->buf[0] = raceprofCount * (1 << 10);
	arg->buf[1] = 0;
}

static void* raceprofThread(void* p) {
	int i;

for (i = 0; i < 100; i++) {
		pthread_kill(pthread_self(), SIGPROF);
		sched_yield();
	}
	return 0;
}

void runRaceprofThread() {
	pthread_t tid;
	pthread_create(&tid, 0, raceprofThread, 0);
	pthread_join(tid, 0);
}
*/
import "C"

import (
	"bytes"
	"fmt"
	"runtime"
	"runtime/pprof"
	"unsafe"
)

func init() {
	register("CgoRaceprof", CgoRaceprof)
}

func CgoRaceprof() {
	runtime.SetCgoTraceback(0, unsafe.Pointer(C.raceprofTraceback), nil, nil)

var buf bytes.Buffer
	pprof.StartCPUProfile(&buf)

C.runRaceprofThread()
	fmt.Println("OK")
}

${this.title}

Code Editor : raceprof.go