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Diffstat (limited to 'pr/tests/sema.c')
| -rw-r--r-- | pr/tests/sema.c | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/pr/tests/sema.c b/pr/tests/sema.c new file mode 100644 index 0000000..3dff8a0 --- /dev/null +++ b/pr/tests/sema.c @@ -0,0 +1,180 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* ***** BEGIN LICENSE BLOCK ***** + * Version: MPL 1.1/GPL 2.0/LGPL 2.1 + * + * 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 the Initial Developer are Copyright (C) 1999-2000 + * the Initial Developer. All Rights Reserved. + * + * Contributor(s): + * + * Alternatively, the contents of this file may be used under the terms of + * either the GNU General Public License Version 2 or later (the "GPL"), or + * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), + * in which case the provisions of the GPL or the LGPL are applicable instead + * of those above. If you wish to allow use of your version of this file only + * under the terms of either the GPL or the LGPL, and not to allow others to + * use your version of this file under the terms of the MPL, indicate your + * decision by deleting the provisions above and replace them with the notice + * and other provisions required by the GPL or the LGPL. If you do not delete + * the provisions above, a recipient may use your version of this file under + * the terms of any one of the MPL, the GPL or the LGPL. + * + * ***** END LICENSE BLOCK ***** */ + +#include "nspr.h" +#include "plgetopt.h" + +#include <stdio.h> + +#define SEM_NAME1 "/tmp/foo.sem" +#define SEM_NAME2 "/tmp/bar.sem" +#define SEM_MODE 0666 +#define ITERATIONS 1000 + +static PRBool debug_mode = PR_FALSE; +static PRIntn iterations = ITERATIONS; +static PRIntn counter; +static PRSem *sem1, *sem2; + +/* + * Thread 2 waits on semaphore 2 and posts to semaphore 1. + */ +void ThreadFunc(void *arg) +{ + PRIntn i; + + for (i = 0; i < iterations; i++) { + if (PR_WaitSemaphore(sem2) == PR_FAILURE) { + fprintf(stderr, "PR_WaitSemaphore failed\n"); + exit(1); + } + if (counter == 2*i+1) { + if (debug_mode) printf("thread 2: counter = %d\n", counter); + } else { + fprintf(stderr, "thread 2: counter should be %d but is %d\n", + 2*i+1, counter); + exit(1); + } + counter++; + if (PR_PostSemaphore(sem1) == PR_FAILURE) { + fprintf(stderr, "PR_PostSemaphore failed\n"); + exit(1); + } + } +} + +static void Help(void) +{ + fprintf(stderr, "sema test program usage:\n"); + fprintf(stderr, "\t-d debug mode (FALSE)\n"); + fprintf(stderr, "\t-c <count> loop count (%d)\n", ITERATIONS); + fprintf(stderr, "\t-h this message\n"); +} /* Help */ + +int main(int argc, char **argv) +{ + PRThread *thred; + PRIntn i; + PLOptStatus os; + PLOptState *opt = PL_CreateOptState(argc, argv, "dc:h"); + + 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 'c': /* loop count */ + iterations = atoi(opt->value); + break; + case 'h': + default: + Help(); + return 2; + } + } + PL_DestroyOptState(opt); + + if (PR_DeleteSemaphore(SEM_NAME1) == PR_SUCCESS) { + fprintf(stderr, "warning: removed semaphore %s left over " + "from previous run\n", SEM_NAME1); + } + if (PR_DeleteSemaphore(SEM_NAME2) == PR_SUCCESS) { + fprintf(stderr, "warning: removed semaphore %s left over " + "from previous run\n", SEM_NAME2); + } + + sem1 = PR_OpenSemaphore(SEM_NAME1, PR_SEM_CREATE, SEM_MODE, 1); + if (NULL == sem1) { + fprintf(stderr, "PR_OpenSemaphore failed (%d, %d)\n", + PR_GetError(), PR_GetOSError()); + exit(1); + } + sem2 = PR_OpenSemaphore(SEM_NAME2, PR_SEM_CREATE, SEM_MODE, 0); + if (NULL == sem2) { + fprintf(stderr, "PR_OpenSemaphore failed\n"); + exit(1); + } + thred = PR_CreateThread(PR_USER_THREAD, ThreadFunc, NULL, + PR_PRIORITY_NORMAL, PR_GLOBAL_THREAD, PR_JOINABLE_THREAD, 0); + if (NULL == thred) { + fprintf(stderr, "PR_CreateThread failed\n"); + exit(1); + } + + /* + * Thread 1 waits on semaphore 1 and posts to semaphore 2. + */ + for (i = 0; i < iterations; i++) { + if (PR_WaitSemaphore(sem1) == PR_FAILURE) { + fprintf(stderr, "PR_WaitSemaphore failed\n"); + exit(1); + } + if (counter == 2*i) { + if (debug_mode) printf("thread 1: counter = %d\n", counter); + } else { + fprintf(stderr, "thread 1: counter should be %d but is %d\n", + 2*i, counter); + exit(1); + } + counter++; + if (PR_PostSemaphore(sem2) == PR_FAILURE) { + fprintf(stderr, "PR_PostSemaphore failed\n"); + exit(1); + } + } + + if (PR_JoinThread(thred) == PR_FAILURE) { + fprintf(stderr, "PR_JoinThread failed\n"); + exit(1); + } + + if (PR_CloseSemaphore(sem1) == PR_FAILURE) { + fprintf(stderr, "PR_CloseSemaphore failed\n"); + } + if (PR_CloseSemaphore(sem2) == PR_FAILURE) { + fprintf(stderr, "PR_CloseSemaphore failed\n"); + } + if (PR_DeleteSemaphore(SEM_NAME1) == PR_FAILURE) { + fprintf(stderr, "PR_DeleteSemaphore failed\n"); + } + if (PR_DeleteSemaphore(SEM_NAME2) == PR_FAILURE) { + fprintf(stderr, "PR_DeleteSemaphore failed\n"); + } + printf("PASS\n"); + return 0; +} |