1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /* This Source Code Form is subject to the terms of the Mozilla Public
3 * License, v. 2.0. If a copy of the MPL was not distributed with this
4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
5
6 #include "nspr.h"
7 #include "plgetopt.h"
8
9 #include <stdio.h>
10
11 #ifdef DEBUG
12 #define SEM_D "D"
13 #else
14 #define SEM_D
15 #endif
16 #ifdef IS_64
17 #define SEM_64 "64"
18 #else
19 #define SEM_64
20 #endif
21
22 #define SHM_NAME "/tmp/counter" SEM_D SEM_64
23 #define SEM_NAME1 "/tmp/foo.sem" SEM_D SEM_64
24 #define SEM_NAME2 "/tmp/bar.sem" SEM_D SEM_64
25 #define ITERATIONS 1000
26
27 static PRBool debug_mode = PR_FALSE;
28 static PRIntn iterations = ITERATIONS;
29 static PRSem *sem1, *sem2;
30
Help(void)31 static void Help(void)
32 {
33 fprintf(stderr, "semapong test program usage:\n");
34 fprintf(stderr, "\t-d debug mode (FALSE)\n");
35 fprintf(stderr, "\t-c <count> loop count (%d)\n", ITERATIONS);
36 fprintf(stderr, "\t-h this message\n");
37 } /* Help */
38
main(int argc,char ** argv)39 int main(int argc, char **argv)
40 {
41 PRIntn i;
42 PRSharedMemory *shm;
43 PRIntn *counter_addr;
44 PLOptStatus os;
45 PLOptState *opt = PL_CreateOptState(argc, argv, "dc:h");
46
47 while (PL_OPT_EOL != (os = PL_GetNextOpt(opt))) {
48 if (PL_OPT_BAD == os) {
49 continue;
50 }
51 switch (opt->option) {
52 case 'd': /* debug mode */
53 debug_mode = PR_TRUE;
54 break;
55 case 'c': /* loop count */
56 iterations = atoi(opt->value);
57 break;
58 case 'h':
59 default:
60 Help();
61 return 2;
62 }
63 }
64 PL_DestroyOptState(opt);
65
66 shm = PR_OpenSharedMemory(SHM_NAME, sizeof(*counter_addr), 0, 0666);
67 if (NULL == shm) {
68 fprintf(stderr, "PR_OpenSharedMemory failed (%d, %d)\n",
69 PR_GetError(), PR_GetOSError());
70 exit(1);
71 }
72 sem1 = PR_OpenSemaphore(SEM_NAME1, 0, 0, 0);
73 if (NULL == sem1) {
74 fprintf(stderr, "PR_OpenSemaphore failed (%d, %d)\n",
75 PR_GetError(), PR_GetOSError());
76 exit(1);
77 }
78 sem2 = PR_OpenSemaphore(SEM_NAME2, 0, 0, 0);
79 if (NULL == sem2) {
80 fprintf(stderr, "PR_OpenSemaphore failed (%d, %d)\n",
81 PR_GetError(), PR_GetOSError());
82 exit(1);
83 }
84
85 counter_addr = PR_AttachSharedMemory(shm, 0);
86 if (NULL == counter_addr) {
87 fprintf(stderr, "PR_AttachSharedMemory failed\n");
88 exit(1);
89 }
90
91 /*
92 * Process 2 waits on semaphore 2 and posts to semaphore 1.
93 */
94 for (i = 0; i < iterations; i++) {
95 if (PR_WaitSemaphore(sem2) == PR_FAILURE) {
96 fprintf(stderr, "PR_WaitSemaphore failed\n");
97 exit(1);
98 }
99 if (*counter_addr == 2*i+1) {
100 if (debug_mode) {
101 printf("process 2: counter = %d\n", *counter_addr);
102 }
103 } else {
104 fprintf(stderr, "process 2: counter should be %d but is %d\n",
105 2*i+1, *counter_addr);
106 exit(1);
107 }
108 (*counter_addr)++;
109 if (PR_PostSemaphore(sem1) == PR_FAILURE) {
110 fprintf(stderr, "PR_PostSemaphore failed\n");
111 exit(1);
112 }
113 }
114 if (PR_DetachSharedMemory(shm, counter_addr) == PR_FAILURE) {
115 fprintf(stderr, "PR_DetachSharedMemory failed\n");
116 exit(1);
117 }
118 if (PR_CloseSharedMemory(shm) == PR_FAILURE) {
119 fprintf(stderr, "PR_CloseSharedMemory failed\n");
120 exit(1);
121 }
122 if (PR_CloseSemaphore(sem1) == PR_FAILURE) {
123 fprintf(stderr, "PR_CloseSemaphore failed\n");
124 }
125 if (PR_CloseSemaphore(sem2) == PR_FAILURE) {
126 fprintf(stderr, "PR_CloseSemaphore failed\n");
127 }
128 printf("PASS\n");
129 return 0;
130 }
131