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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 : main3.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.

// Test os/signal.Notify and os/signal.Reset.
// This is a lot like misc/cgo/testcshared/main5.c.

#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <sched.h>
#include <unistd.h>
#include <pthread.h>

#include "libgo3.h"

static void die(const char* msg) {
	perror(msg);
	exit(EXIT_FAILURE);
}

static volatile sig_atomic_t sigioSeen;

static void ioHandler(int signo, siginfo_t* info, void* ctxt) {
	sigioSeen = 1;
}

// Set up the SIGPIPE signal handler in a high priority constructor, so
// that it is installed before the Go code starts.

static void pipeHandler(int signo, siginfo_t* info, void* ctxt) {
	const char *s = "unexpected SIGPIPE\n";
	write(2, s, strlen(s));
	exit(EXIT_FAILURE);
}

static void init(void) __attribute__ ((constructor (200)));

static void init() {
    struct sigaction sa;

memset(&sa, 0, sizeof sa);
	sa.sa_sigaction = pipeHandler;
	if (sigemptyset(&sa.sa_mask) < 0) {
		die("sigemptyset");
	}
	sa.sa_flags = SA_SIGINFO;
	if (sigaction(SIGPIPE, &sa, NULL) < 0) {
		die("sigaction");
	}
}

static void *provokeSIGPIPE(void *arg) {
	ProvokeSIGPIPE();
	return NULL;
}

int main(int argc, char** argv) {
	int verbose;
	struct sigaction sa;
	int i;
	struct timespec ts;
	int res;
	pthread_t tid;

verbose = argc > 2;
	setvbuf(stdout, NULL, _IONBF, 0);

if (verbose) {
		printf("raising SIGPIPE\n");
	}

// Test that the Go runtime handles SIGPIPE, even if we installed
	// a non-default SIGPIPE handler before the runtime initializes.
	ProvokeSIGPIPE();

// Test that SIGPIPE on a non-main thread is also handled by Go.
	res = pthread_create(&tid, NULL, provokeSIGPIPE, NULL);
	if (res != 0) {
		fprintf(stderr, "pthread_create: %s\n", strerror(res));
		exit(EXIT_FAILURE);
	}

res = pthread_join(tid, NULL);
	if (res != 0) {
		fprintf(stderr, "pthread_join: %s\n", strerror(res));
		exit(EXIT_FAILURE);
	}

if (verbose) {
		printf("calling sigaction\n");
	}

memset(&sa, 0, sizeof sa);
	sa.sa_sigaction = ioHandler;
	if (sigemptyset(&sa.sa_mask) < 0) {
		die("sigemptyset");
	}
	sa.sa_flags = SA_SIGINFO;
	if (sigaction(SIGIO, &sa, NULL) < 0) {
		die("sigaction");
	}

// At this point there should not be a Go signal handler
	// installed for SIGIO.

if (verbose) {
		printf("raising SIGIO\n");
	}

if (raise(SIGIO) < 0) {
		die("raise");
	}

if (verbose) {
		printf("waiting for sigioSeen\n");
	}

// Wait until the signal has been delivered.
	i = 0;
	while (!sigioSeen) {
		ts.tv_sec = 0;
		ts.tv_nsec = 1000000;
		nanosleep(&ts, NULL);
		i++;
		if (i > 5000) {
			fprintf(stderr, "looping too long waiting for signal\n");
			exit(EXIT_FAILURE);
		}
	}

sigioSeen = 0;

// Tell the Go code to catch SIGIO.

if (verbose) {
		printf("calling CatchSIGIO\n");
	}

CatchSIGIO();

if (verbose) {
		printf("raising SIGIO\n");
	}

if (raise(SIGIO) < 0) {
		die("raise");
	}

if (verbose) {
		printf("calling SawSIGIO\n");
	}

if (!SawSIGIO()) {
		fprintf(stderr, "Go handler did not see SIGIO\n");
		exit(EXIT_FAILURE);
	}

if (sigioSeen != 0) {
		fprintf(stderr, "C handler saw SIGIO when only Go handler should have\n");
		exit(EXIT_FAILURE);
	}

// Tell the Go code to stop catching SIGIO.

if (verbose) {
		printf("calling ResetSIGIO\n");
	}

ResetSIGIO();

if (verbose) {
		printf("raising SIGIO\n");
	}

if (raise(SIGIO) < 0) {
		die("raise");
	}

if (verbose) {
		printf("calling SawSIGIO\n");
	}

if (SawSIGIO()) {
		fprintf(stderr, "Go handler saw SIGIO after Reset\n");
		exit(EXIT_FAILURE);
	}

if (verbose) {
		printf("waiting for sigioSeen\n");
	}

printf("PASS\n");
	return 0;
}

${this.title}

Code Editor : main3.c