gecko-dev/nsprpub/pr/tests/semaerr.c

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 
 * The contents of this file are subject to the Mozilla Public
 * License Version 1.1 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of
 * the License at http://www.mozilla.org/MPL/
 * 
 * Software distributed under the License is distributed on an "AS
 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * rights and limitations under the License.
 * 
 * The Original Code is the Netscape Portable Runtime (NSPR).
 * 
 * The Initial Developer of the Original Code is Netscape
 * Communications Corporation.  Portions created by Netscape are 
 * Copyright (C) 1999-2000 Netscape Communications Corporation.  All
 * Rights Reserved.
 * 
 * Contributor(s):
 * 
 * Alternatively, the contents of this file may be used under the
 * terms of the GNU General Public License Version 2 or later (the
 * "GPL"), in which case the provisions of the GPL are applicable 
 * instead of those above.  If you wish to allow use of your 
 * version of this file only under the terms of the GPL and not to
 * allow others to use your version of this file under the MPL,
 * indicate your decision by deleting the provisions above and
 * replace them with the notice and other provisions required by
 * the GPL.  If you do not delete the provisions above, a recipient
 * may use your version of this file under either the MPL or the
 * GPL.
 */

#include "nspr.h"
#include "plgetopt.h"

#include <stdio.h>

#define NO_SUCH_SEM_NAME "/tmp/nosuchsem.sem"
#define SEM_NAME1 "/tmp/foo.sem"
#define SEM_MODE  0666

static PRBool debug_mode = PR_FALSE;

static void Help(void)
{
    fprintf(stderr, "semaerr test program usage:\n");
    fprintf(stderr, "\t-d           debug mode         (FALSE)\n");
    fprintf(stderr, "\t-h           this message\n");
}  /* Help */

int main(int argc, char **argv)
{
    PLOptStatus os;
    PLOptState *opt = PL_CreateOptState(argc, argv, "dh");
    PRSem *sem;
    char *child_argv[32];
    char **child_arg;
    PRProcess *proc;
    PRInt32 exit_code;

    while (PL_OPT_EOL != (os = PL_GetNextOpt(opt))) {
        if (PL_OPT_BAD == os) continue;
        switch (opt->option) {
            case 'd':  /* debug mode */
                debug_mode = PR_TRUE;
                break;
            case 'h':
            default:
                Help();
                return 2;
        }
    }
    PL_DestroyOptState(opt);

    /*
     * Open a nonexistent semaphore without the PR_SEM_CREATE
     * flag should fail with PR_FILE_NOT_FOUND_ERROR.
     */
    (void) PR_DeleteSemaphore(NO_SUCH_SEM_NAME);
    sem = PR_OpenSemaphore(NO_SUCH_SEM_NAME, 0, 0, 0);
    if (NULL != sem) {
        fprintf(stderr, "Opening nonexistent semaphore %s "
                "without the PR_SEM_CREATE flag should fail "
                "but succeeded\n", NO_SUCH_SEM_NAME);
        exit(1);
    }
    if (PR_GetError() != PR_FILE_NOT_FOUND_ERROR) {
        fprintf(stderr, "Expected error is %d but got (%d, %d)\n",
                PR_FILE_NOT_FOUND_ERROR, PR_GetError(), PR_GetOSError());
        exit(1);
    }

    /*
     * Create a semaphore and let the another process
     * try PR_SEM_CREATE and PR_SEM_CREATE|PR_SEM_EXCL.
     */
    if (PR_DeleteSemaphore(SEM_NAME1) == PR_SUCCESS) {
        fprintf(stderr, "warning: deleted semaphore %s from previous "
                "run of the test\n", SEM_NAME1);
    }
    sem = PR_OpenSemaphore(SEM_NAME1, PR_SEM_CREATE, SEM_MODE, 0);
    if (sem == NULL) {
        fprintf(stderr, "PR_OpenSemaphore failed (%d, %d)\n",
                PR_GetError(), PR_GetOSError());
        exit(1);
    }
    child_arg = child_argv;
    *child_arg++ = "semaerr1";
    if (debug_mode) {
        *child_arg++ = "-d";
    }
    *child_arg = NULL;
    proc = PR_CreateProcess(child_argv[0], child_argv, NULL, NULL);
    if (proc == NULL) {
        fprintf(stderr, "PR_CreateProcess failed\n");
        exit(1);
    }
    if (PR_WaitProcess(proc, &exit_code) == PR_FAILURE) {
        fprintf(stderr, "PR_WaitProcess failed\n");
        exit(1);
    }
    if (exit_code != 0) {
        fprintf(stderr, "process semaerr1 failed\n");
        exit(1);
    }
    if (PR_CloseSemaphore(sem) == PR_FAILURE) {
        fprintf(stderr, "PR_CloseSemaphore failed\n");
        exit(1);
    }
    if (PR_DeleteSemaphore(SEM_NAME1) == PR_FAILURE) {
        fprintf(stderr, "PR_DeleteSemaphore failed\n");
        exit(1);
    }

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