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nsprpub/pr/tests/sema.c@4ab42b5ab56c (annotated)

nsprpub/pr/tests/sema.c

Wed, 31 Dec 2014 07:53:36 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Wed, 31 Dec 2014 07:53:36 +0100

branch

TOR_BUG_3246

changeset 5

4ab42b5ab56c

permissions

-rw-r--r--

Correct small whitespace inconsistency, lost while renaming variables.

michael@0	1	/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0	2	/* This Source Code Form is subject to the terms of the Mozilla Public
michael@0	3	* License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0	4	* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0	5
michael@0	6	#include "nspr.h"
michael@0	7	#include "plgetopt.h"
michael@0	8
michael@0	9	#include <stdio.h>
michael@0	10
michael@0	11	#define SEM_NAME1 "/tmp/foo.sem"
michael@0	12	#define SEM_NAME2 "/tmp/bar.sem"
michael@0	13	#define SEM_MODE 0666
michael@0	14	#define ITERATIONS 1000
michael@0	15
michael@0	16	static PRBool debug_mode = PR_FALSE;
michael@0	17	static PRIntn iterations = ITERATIONS;
michael@0	18	static PRIntn counter;
michael@0	19	static PRSem *sem1, *sem2;
michael@0	20
michael@0	21	/*
michael@0	22	* Thread 2 waits on semaphore 2 and posts to semaphore 1.
michael@0	23	*/
michael@0	24	void ThreadFunc(void *arg)
michael@0	25	{
michael@0	26	PRIntn i;
michael@0	27
michael@0	28	for (i = 0; i < iterations; i++) {
michael@0	29	if (PR_WaitSemaphore(sem2) == PR_FAILURE) {
michael@0	30	fprintf(stderr, "PR_WaitSemaphore failed\n");
michael@0	31	exit(1);
michael@0	32	}
michael@0	33	if (counter == 2*i+1) {
michael@0	34	if (debug_mode) printf("thread 2: counter = %d\n", counter);
michael@0	35	} else {
michael@0	36	fprintf(stderr, "thread 2: counter should be %d but is %d\n",
michael@0	37	2*i+1, counter);
michael@0	38	exit(1);
michael@0	39	}
michael@0	40	counter++;
michael@0	41	if (PR_PostSemaphore(sem1) == PR_FAILURE) {
michael@0	42	fprintf(stderr, "PR_PostSemaphore failed\n");
michael@0	43	exit(1);
michael@0	44	}
michael@0	45	}
michael@0	46	}
michael@0	47
michael@0	48	static void Help(void)
michael@0	49	{
michael@0	50	fprintf(stderr, "sema test program usage:\n");
michael@0	51	fprintf(stderr, "\t-d debug mode (FALSE)\n");
michael@0	52	fprintf(stderr, "\t-c <count> loop count (%d)\n", ITERATIONS);
michael@0	53	fprintf(stderr, "\t-h this message\n");
michael@0	54	} /* Help */
michael@0	55
michael@0	56	int main(int argc, char **argv)
michael@0	57	{
michael@0	58	PRThread *thred;
michael@0	59	PRIntn i;
michael@0	60	PLOptStatus os;
michael@0	61	PLOptState *opt = PL_CreateOptState(argc, argv, "dc:h");
michael@0	62
michael@0	63	while (PL_OPT_EOL != (os = PL_GetNextOpt(opt))) {
michael@0	64	if (PL_OPT_BAD == os) continue;
michael@0	65	switch (opt->option) {
michael@0	66	case 'd': /* debug mode */
michael@0	67	debug_mode = PR_TRUE;
michael@0	68	break;
michael@0	69	case 'c': /* loop count */
michael@0	70	iterations = atoi(opt->value);
michael@0	71	break;
michael@0	72	case 'h':
michael@0	73	default:
michael@0	74	Help();
michael@0	75	return 2;
michael@0	76	}
michael@0	77	}
michael@0	78	PL_DestroyOptState(opt);
michael@0	79
michael@0	80	if (PR_DeleteSemaphore(SEM_NAME1) == PR_SUCCESS) {
michael@0	81	fprintf(stderr, "warning: removed semaphore %s left over "
michael@0	82	"from previous run\n", SEM_NAME1);
michael@0	83	}
michael@0	84	if (PR_DeleteSemaphore(SEM_NAME2) == PR_SUCCESS) {
michael@0	85	fprintf(stderr, "warning: removed semaphore %s left over "
michael@0	86	"from previous run\n", SEM_NAME2);
michael@0	87	}
michael@0	88
michael@0	89	sem1 = PR_OpenSemaphore(SEM_NAME1, PR_SEM_CREATE, SEM_MODE, 1);
michael@0	90	if (NULL == sem1) {
michael@0	91	fprintf(stderr, "PR_OpenSemaphore failed (%d, %d)\n",
michael@0	92	PR_GetError(), PR_GetOSError());
michael@0	93	exit(1);
michael@0	94	}
michael@0	95	sem2 = PR_OpenSemaphore(SEM_NAME2, PR_SEM_CREATE, SEM_MODE, 0);
michael@0	96	if (NULL == sem2) {
michael@0	97	fprintf(stderr, "PR_OpenSemaphore failed\n");
michael@0	98	exit(1);
michael@0	99	}
michael@0	100	thred = PR_CreateThread(PR_USER_THREAD, ThreadFunc, NULL,
michael@0	101	PR_PRIORITY_NORMAL, PR_GLOBAL_THREAD, PR_JOINABLE_THREAD, 0);
michael@0	102	if (NULL == thred) {
michael@0	103	fprintf(stderr, "PR_CreateThread failed\n");
michael@0	104	exit(1);
michael@0	105	}
michael@0	106
michael@0	107	/*
michael@0	108	* Thread 1 waits on semaphore 1 and posts to semaphore 2.
michael@0	109	*/
michael@0	110	for (i = 0; i < iterations; i++) {
michael@0	111	if (PR_WaitSemaphore(sem1) == PR_FAILURE) {
michael@0	112	fprintf(stderr, "PR_WaitSemaphore failed\n");
michael@0	113	exit(1);
michael@0	114	}
michael@0	115	if (counter == 2*i) {
michael@0	116	if (debug_mode) printf("thread 1: counter = %d\n", counter);
michael@0	117	} else {
michael@0	118	fprintf(stderr, "thread 1: counter should be %d but is %d\n",
michael@0	119	2*i, counter);
michael@0	120	exit(1);
michael@0	121	}
michael@0	122	counter++;
michael@0	123	if (PR_PostSemaphore(sem2) == PR_FAILURE) {
michael@0	124	fprintf(stderr, "PR_PostSemaphore failed\n");
michael@0	125	exit(1);
michael@0	126	}
michael@0	127	}
michael@0	128
michael@0	129	if (PR_JoinThread(thred) == PR_FAILURE) {
michael@0	130	fprintf(stderr, "PR_JoinThread failed\n");
michael@0	131	exit(1);
michael@0	132	}
michael@0	133
michael@0	134	if (PR_CloseSemaphore(sem1) == PR_FAILURE) {
michael@0	135	fprintf(stderr, "PR_CloseSemaphore failed\n");
michael@0	136	}
michael@0	137	if (PR_CloseSemaphore(sem2) == PR_FAILURE) {
michael@0	138	fprintf(stderr, "PR_CloseSemaphore failed\n");
michael@0	139	}
michael@0	140	if (PR_DeleteSemaphore(SEM_NAME1) == PR_FAILURE) {
michael@0	141	fprintf(stderr, "PR_DeleteSemaphore failed\n");
michael@0	142	}
michael@0	143	if (PR_DeleteSemaphore(SEM_NAME2) == PR_FAILURE) {
michael@0	144	fprintf(stderr, "PR_DeleteSemaphore failed\n");
michael@0	145	}
michael@0	146	printf("PASS\n");
michael@0	147	return 0;
michael@0	148	}