testcases/open_posix_testsuite/conformance/interfaces/sigwaitinfo/7-1.c

/*
 * Copyright (c) 2002-2003, Intel Corporation. All rights reserved.
 * Created by:  salwan.searty REMOVE-THIS AT intel DOT com
 * This file is licensed under the GPL license.  For the full content
 * of this license, see the COPYING file at the top level of this
 * source tree.

 This program tests the assertion that if SA_SIGINFO is set, then the
 signal shall be queued to the receiving process and that sigqueue returns 0.

 Steps:
 - Register for myhandler to be called when SIGTOTEST is called, and make
   sure SA_SIGINFO is set.
 - Block signal SIGTOTEST from the process.
 - Using sigqueue(), send NUMCALLS instances of SIGTOTEST to the current
   process.
 - Call sigwaitinfo() NUMCALLS times, and verify that the queued signals are
   selected in FIFO order.

 */

#define _XOPEN_SOURCE 600
#define _XOPEN_REALTIME 1
#define SIGTOTEST SIGRTMIN
#define NUMCALLS 5

#include <signal.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <errno.h>
#include "posixtest.h"

int counter = 0;

void myhandler(int signo, siginfo_t *info, void *context) {
	counter++;
}

int main()
{
	int pid, i;
	union sigval value;
	struct sigaction act;
	sigset_t selectset;
	siginfo_t info;

	act.sa_flags = SA_SIGINFO;
	act.sa_sigaction = myhandler;
	sigemptyset(&act.sa_mask);
	sigaction(SIGTOTEST, &act, 0);

	pid = getpid();

	sighold(SIGTOTEST);

	for (i=NUMCALLS; i>0; i--) {
		value.sival_int = i;
		if (sigqueue(pid, SIGTOTEST, value) != 0) {
			printf("Test FAILED: call to sigqueue did not return success\n");
			return PTS_FAIL;
		}
	}

        sigemptyset(&selectset);
        sigaddset(&selectset, SIGTOTEST);

	for (i=NUMCALLS; i>0; i--) {
	        if (sigwaitinfo(&selectset, &info) != SIGTOTEST) {
	                perror("sigwaitinfo() returned signal other than SIGTOTEST\n");
	                return PTS_UNRESOLVED;
	        }
	        if (info.si_value.sival_int != i) {
	                printf("Test FAILED: The queued value %d was dequeued before "
                        "the queued value %d even though %d was queued first.\n",
			info.si_value.sival_int, i, i);
	                return PTS_FAIL;
	        }
	}

	return PTS_PASS;
}