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Name	Size	Permission
libgo	[ DIR ]	drwxr-xr-x
libgo2	[ DIR ]	drwxr-xr-x
libgo3	[ DIR ]	drwxr-xr-x
libgo4	[ DIR ]	drwxr-xr-x
libgo6	[ DIR ]	drwxr-xr-x
libgo7	[ DIR ]	drwxr-xr-x
p	[ DIR ]	drwxr-xr-x
main.c	847 B	-rw-r--r--
main2.c	4.7 KB	-rw-r--r--
main3.c	3.93 KB	-rw-r--r--
main4.c	4.48 KB	-rw-r--r--
main5.c	1.9 KB	-rw-r--r--
main6.c	830 B	-rw-r--r--
main7.c	332 B	-rw-r--r--
main_unix.c	1.38 KB	-rw-r--r--
main_windows.c	343 B	-rw-r--r--

Code Editor : main_unix.c

// Copyright 2015 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.

#include <signal.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

struct sigaction sa;
struct sigaction osa;

static void (*oldHandler)(int, siginfo_t*, void*);

static void handler(int signo, siginfo_t* info, void* ctxt) {
	if (oldHandler) {
		oldHandler(signo, info, ctxt);
	}
}

int install_handler() {
	// Install our own signal handler.
	memset(&sa, 0, sizeof sa);
	sa.sa_sigaction = handler;
	sigemptyset(&sa.sa_mask);
	sa.sa_flags = SA_ONSTACK | SA_SIGINFO;
	memset(&osa, 0, sizeof osa);
	sigemptyset(&osa.sa_mask);
	if (sigaction(SIGSEGV, &sa, &osa) < 0) {
		perror("sigaction");
		return 2;
	}
	if (osa.sa_handler == SIG_DFL) {
		fprintf(stderr, "Go runtime did not install signal handler\n");
		return 2;
	}
	// gccgo does not set SA_ONSTACK for SIGSEGV.
	if (getenv("GCCGO") == "" && (osa.sa_flags&SA_ONSTACK) == 0) {
		fprintf(stderr, "Go runtime did not install signal handler\n");
		return 2;
	}
	oldHandler = osa.sa_sigaction;

return 0;
}

int check_handler() {
	if (sigaction(SIGSEGV, NULL, &sa) < 0) {
		perror("sigaction check");
		return 2;
	}
	if (sa.sa_sigaction != handler) {
		fprintf(stderr, "ERROR: wrong signal handler: %p != %p\n", sa.sa_sigaction, handler);
		return 2;
	}
	return 0;
}

${this.title}

Code Editor : main_unix.c