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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

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Roy Tam 2018-01-19 03:59:58 +08:00
commit dcd9973243
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148
nsprpub/pr/tests/sema.c Normal file
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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#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;
}