зеркало из https://github.com/mozilla/pjs.git
178 строки
5.6 KiB
C
178 строки
5.6 KiB
C
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/*
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* The contents of this file are subject to the Mozilla Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is the Netscape security libraries.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998-2000 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the
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* terms of the GNU General Public License Version 2 or later (the
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* "GPL"), in which case the provisions of the GPL are applicable
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* instead of those above. If you wish to allow use of your
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* version of this file only under the terms of the GPL and not to
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* allow others to use your version of this file under the MPL,
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* indicate your decision by deleting the provisions above and
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* replace them with the notice and other provisions required by
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* the GPL. If you do not delete the provisions above, a recipient
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* may use your version of this file under either the MPL or the
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* GPL.
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*/
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#include "nspr.h"
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#include "plgetopt.h"
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#include <stdio.h>
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#define SEM_NAME1 "/tmp/foo.sem"
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#define SEM_NAME2 "/tmp/bar.sem"
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#define SEM_MODE 0666
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#define ITERATIONS 1000
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static PRBool debug_mode = PR_FALSE;
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static PRIntn iterations = ITERATIONS;
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static PRIntn counter;
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static PRSem *sem1, *sem2;
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/*
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* Thread 2 waits on semaphore 2 and posts to semaphore 1.
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*/
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void ThreadFunc(void *arg)
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{
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PRIntn i;
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for (i = 0; i < iterations; i++) {
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if (PR_WaitSemaphore(sem2) == PR_FAILURE) {
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fprintf(stderr, "PR_WaitSemaphore failed\n");
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exit(1);
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}
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if (counter == 2*i+1) {
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if (debug_mode) printf("thread 2: counter = %d\n", counter);
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} else {
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fprintf(stderr, "thread 2: counter should be %d but is %d\n",
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2*i+1, counter);
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exit(1);
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}
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counter++;
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if (PR_PostSemaphore(sem1) == PR_FAILURE) {
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fprintf(stderr, "PR_PostSemaphore failed\n");
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exit(1);
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}
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}
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}
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static void Help(void)
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{
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fprintf(stderr, "sema test program usage:\n");
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fprintf(stderr, "\t-d debug mode (FALSE)\n");
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fprintf(stderr, "\t-c <count> loop count (%d)\n", ITERATIONS);
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fprintf(stderr, "\t-h this message\n");
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} /* Help */
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int main(int argc, char **argv)
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{
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PRThread *thred;
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PRIntn i;
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PLOptStatus os;
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PLOptState *opt = PL_CreateOptState(argc, argv, "dc:h");
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while (PL_OPT_EOL != (os = PL_GetNextOpt(opt))) {
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if (PL_OPT_BAD == os) continue;
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switch (opt->option) {
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case 'd': /* debug mode */
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debug_mode = PR_TRUE;
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break;
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case 'c': /* loop count */
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iterations = atoi(opt->value);
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break;
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case 'h':
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default:
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Help();
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return 2;
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}
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}
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PL_DestroyOptState(opt);
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if (PR_DeleteSemaphore(SEM_NAME1) == PR_SUCCESS) {
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fprintf(stderr, "warning: removed semaphore %s left over "
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"from previous run\n", SEM_NAME1);
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}
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if (PR_DeleteSemaphore(SEM_NAME2) == PR_SUCCESS) {
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fprintf(stderr, "warning: removed semaphore %s left over "
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"from previous run\n", SEM_NAME2);
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}
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sem1 = PR_OpenSemaphore(SEM_NAME1, PR_SEM_CREATE, SEM_MODE, 1);
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if (NULL == sem1) {
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fprintf(stderr, "PR_OpenSemaphore failed (%d, %d)\n",
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PR_GetError(), PR_GetOSError());
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exit(1);
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}
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sem2 = PR_OpenSemaphore(SEM_NAME2, PR_SEM_CREATE, SEM_MODE, 0);
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if (NULL == sem2) {
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fprintf(stderr, "PR_OpenSemaphore failed\n");
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exit(1);
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}
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thred = PR_CreateThread(PR_USER_THREAD, ThreadFunc, NULL,
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PR_PRIORITY_NORMAL, PR_GLOBAL_THREAD, PR_JOINABLE_THREAD, 0);
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if (NULL == thred) {
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fprintf(stderr, "PR_CreateThread failed\n");
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exit(1);
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}
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/*
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* Thread 1 waits on semaphore 1 and posts to semaphore 2.
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*/
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for (i = 0; i < iterations; i++) {
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if (PR_WaitSemaphore(sem1) == PR_FAILURE) {
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fprintf(stderr, "PR_WaitSemaphore failed\n");
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exit(1);
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}
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if (counter == 2*i) {
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if (debug_mode) printf("thread 1: counter = %d\n", counter);
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} else {
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fprintf(stderr, "thread 1: counter should be %d but is %d\n",
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2*i, counter);
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exit(1);
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}
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counter++;
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if (PR_PostSemaphore(sem2) == PR_FAILURE) {
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fprintf(stderr, "PR_PostSemaphore failed\n");
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exit(1);
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}
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}
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if (PR_JoinThread(thred) == PR_FAILURE) {
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fprintf(stderr, "PR_JoinThread failed\n");
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exit(1);
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}
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if (PR_CloseSemaphore(sem1) == PR_FAILURE) {
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fprintf(stderr, "PR_CloseSemaphore failed\n");
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}
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if (PR_CloseSemaphore(sem2) == PR_FAILURE) {
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fprintf(stderr, "PR_CloseSemaphore failed\n");
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}
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if (PR_DeleteSemaphore(SEM_NAME1) == PR_FAILURE) {
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fprintf(stderr, "PR_DeleteSemaphore failed\n");
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}
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if (PR_DeleteSemaphore(SEM_NAME2) == PR_FAILURE) {
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fprintf(stderr, "PR_DeleteSemaphore failed\n");
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}
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printf("PASS\n");
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return 0;
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}
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