1 /*
2 * Copyright (c) 2004, Bull S.A.. All rights reserved.
3 * Created by: Sebastien Decugis
4
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of version 2 of the GNU General Public License as
7 * published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it would be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
12 *
13 * You should have received a copy of the GNU General Public License along
14 * with this program; if not, write the Free Software Foundation, Inc.,
15 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
16 *
17
18 * This file is a scalability test for the pthread_mutex_init function.
19
20 * The steps are:
21 * -> Restrict the memory to 32Mb * SCALABILITY_FACTOR
22 * -> While there is free memory
23 * -> allocate memory for 10 mutex
24 * -> time = 0
25 * -> init the 10 mutex with different attributes
26 * -> output time
27 * -> When memory is full; undo everything:
28 * -> time=0
29 * -> destroy the 10 mutexes
30 * -> output time
31 * -> free memory
32 * -> We could additionally lock each mutex after init, and unlock before destroy.
33 */
34
35 /********************************************************************************************/
36 /****************************** standard includes *****************************************/
37 /********************************************************************************************/
38 #include <pthread.h>
39 #include <errno.h>
40 #include <unistd.h>
41 #include <stdio.h>
42 #include <stdlib.h>
43 #include <stdarg.h>
44 #include <sys/resource.h>
45 #include <sys/time.h>
46
47 /********************************************************************************************/
48 /****************************** Test framework *****************************************/
49 /********************************************************************************************/
50 #include "testfrmw.h"
51 #include "testfrmw.c"
52 /* This header is responsible for defining the following macros:
53 * UNRESOLVED(ret, descr);
54 * where descr is a description of the error and ret is an int (error code for example)
55 * FAILED(descr);
56 * where descr is a short text saying why the test has failed.
57 * PASSED();
58 * No parameter.
59 *
60 * Both three macros shall terminate the calling process.
61 * The testcase shall not terminate in any other maneer.
62 *
63 * The other file defines the functions
64 * void output_init()
65 * void output(char * string, ...)
66 *
67 * Those may be used to output information.
68 */
69
70 /********************************************************************************************/
71 /********************************** Configuration ******************************************/
72 /********************************************************************************************/
73 #ifndef SCALABILITY_FACTOR
74 #define SCALABILITY_FACTOR 1
75 #endif
76 #ifndef VERBOSE
77 #define VERBOSE 1
78 #endif
79
80 #define WITH_LOCKS
81
82 /********************************************************************************************/
83 /*********************************** Test case *****************************************/
84 /********************************************************************************************/
85
86 typedef struct _teststruct {
87 pthread_mutex_t mtx[10 * SCALABILITY_FACTOR];
88 pthread_mutexattr_t ma[5];
89 pthread_mutexattr_t *pma[10 * SCALABILITY_FACTOR];
90 struct _teststruct *prev;
91 } teststruct_t;
92
93 int types[] = { PTHREAD_MUTEX_NORMAL,
94 PTHREAD_MUTEX_ERRORCHECK,
95 PTHREAD_MUTEX_RECURSIVE,
96 PTHREAD_MUTEX_DEFAULT
97 };
98
main(int argc,char * argv[])99 int main(int argc, char *argv[])
100 {
101 struct rlimit rl;
102 int ret;
103 int i;
104 teststruct_t *cur, *prev;
105 struct timeval time_zero, time_cour, time_res, time_sav[8];
106 long sav = 0;
107
108 /* Limit the process memory to a small value (64Mb for example). */
109 rl.rlim_max = 1024 * 1024 * 32 * SCALABILITY_FACTOR;
110 rl.rlim_cur = rl.rlim_max;
111 if ((ret = setrlimit(RLIMIT_AS, &rl))) {
112 UNRESOLVED(ret, "Memory limitation failed");
113 }
114 #if VERBOSE > 1
115 output(";Memory is now limited to %dMb\n", rl.rlim_max >> 20);
116 #endif
117
118 prev = NULL;
119 cur = NULL;
120
121 /* Loop while we have memory left */
122 while (1) {
123 /* Allocate memory for 10 mutex and related stuff */
124 cur = malloc(sizeof(teststruct_t));
125 if (cur == NULL) /* No memory left */
126 break;
127
128 /* Link to the previous so we are able to free memory */
129 cur->prev = prev;
130 prev = cur;
131
132 /* Initialize the mutex attributes */
133 /* We will have:
134 * pma[0] = NULL
135 * pma[1] = NORMAL type mutex attribute
136 * pma[2] = RECURSIVE type mutex attribute
137 * pma[3] = ERRORCHECK type mutex attribute
138 * pma[4] = DEFAULT type mutex attribute
139 * pma[5] = default mutex attribute
140 * pma[6] = NORMAL type mutex attribute
141 * pma[7] = RECURSIVE type mutex attribute
142 * pma[8] = ERRORCHECK type mutex attribute
143 * pma[9] = DEFAULT type mutex attribute
144 * pma[10] = pma[5] ...
145 */
146 for (i = 0; i < 5; i++) {
147 if ((ret = pthread_mutexattr_init(&(cur->ma[i])))) {
148 UNRESOLVED(ret, "Mutex attribute init failed");
149 }
150 if (i) {
151 if ((ret =
152 pthread_mutexattr_settype(&(cur->ma[i]),
153 types[i - 1]))) {
154 UNRESOLVED(ret, "Mutex settype failed");
155 }
156 }
157 }
158 cur->pma[0] = NULL;
159 for (i = 1; i < (10 * SCALABILITY_FACTOR); i++) {
160 cur->pma[i] = &(cur->ma[i % 5]);
161 } /* The mutex attributes are now initialized */
162
163 /* Save the time */
164 gettimeofday(&time_zero, NULL);
165
166 /* For each mutex, we will:
167 * - init the mutex
168 * - destroy the mutex
169 * - init the mutex
170 * - lock the mutex
171 * - unlock the mutex
172 * if WITH_LOCKS,
173 * - lock the mutex
174 */
175 for (i = 0; i < 10 * SCALABILITY_FACTOR; i++) {
176 ret = pthread_mutex_init(&(cur->mtx[i]), cur->pma[i]);
177 if (ret) {
178 UNRESOLVED(ret, "Mutex 1st init failed");
179 }
180 ret = pthread_mutex_destroy(&(cur->mtx[i]));
181 if (ret) {
182 UNRESOLVED(ret, "Mutex 1st destroy failed");
183 }
184 ret = pthread_mutex_init(&(cur->mtx[i]), cur->pma[i]);
185 if (ret) {
186 UNRESOLVED(ret, "Mutex 2nd init failed");
187 }
188 ret = pthread_mutex_lock(&(cur->mtx[i]));
189 if (ret) {
190 UNRESOLVED(ret, "Mutex 1st lock failed");
191 }
192 ret = pthread_mutex_unlock(&(cur->mtx[i]));
193 if (ret) {
194 UNRESOLVED(ret, "Mutex 1st unlock failed");
195 }
196 #ifdef WITH_LOCKS
197 ret = pthread_mutex_lock(&(cur->mtx[i]));
198 if (ret) {
199 UNRESOLVED(ret, "Mutex 2st lock failed");
200 }
201 #endif
202 }
203 /* Compute the operation duration */
204 gettimeofday(&time_cour, NULL);
205 time_res.tv_usec =
206 time_cour.tv_usec + 1000000 - time_zero.tv_usec;
207 if (time_res.tv_usec < 1000000) {
208 time_res.tv_sec =
209 time_cour.tv_sec - 1 - time_zero.tv_sec;
210 } else {
211 time_res.tv_sec = time_cour.tv_sec - time_zero.tv_sec;
212 time_res.tv_usec -= 1000000;
213 }
214
215 if (sav > 3) {
216 time_sav[4].tv_sec = time_sav[5].tv_sec;
217 time_sav[4].tv_usec = time_sav[5].tv_usec;
218 time_sav[5].tv_sec = time_sav[6].tv_sec;
219 time_sav[5].tv_usec = time_sav[6].tv_usec;
220 time_sav[6].tv_sec = time_sav[7].tv_sec;
221 time_sav[6].tv_usec = time_sav[7].tv_usec;
222 time_sav[7].tv_sec = time_res.tv_sec;
223 time_sav[7].tv_usec = time_res.tv_usec;
224 } else {
225 time_sav[sav].tv_sec = time_res.tv_sec;
226 time_sav[sav].tv_usec = time_res.tv_usec;
227 }
228 sav++;
229 #if VERBOSE > 2
230 output("%4i.%06i;\n", time_res.tv_sec, time_res.tv_usec);
231 #endif
232 }
233 if (errno != ENOMEM) {
234 UNRESOLVED(errno, "Memory not full");
235 }
236
237 /* Now we just have to cleanup everything. */
238 while (prev != NULL) {
239 cur = prev;
240 prev = cur->prev;
241
242 /* Free the mutex resources in the cur element */
243 for (i = 0; i < 10 * SCALABILITY_FACTOR; i++) {
244 #ifdef WITH_LOCKS
245 ret = pthread_mutex_unlock(&(cur->mtx[i]));
246 if (ret) {
247 UNRESOLVED(ret, "Mutex 2nd unlock failed");
248 }
249 #endif
250 ret = pthread_mutex_destroy(&(cur->mtx[i]));
251 if (ret) {
252 UNRESOLVED(ret, "Mutex 2nd destroy failed");
253 }
254 }
255 /* Free the mutex attributes resources in the cur element */
256 for (i = 0; i < 5; i++) {
257 if ((ret = pthread_mutexattr_destroy(&(cur->ma[i])))) {
258 UNRESOLVED(ret,
259 "Mutex attribute destroy failed");
260 }
261 }
262 /* Free the element memory */
263 free(cur);
264 }
265 #if VERBOSE > 0
266 if (sav < 8) {
267 output("Not enough iterations to build statistics\n");
268 } else {
269 output("Duration for the operations:\n");
270 output(" %8i : %2i.%06i s\n", 0, time_sav[0].tv_sec,
271 time_sav[0].tv_usec);
272 output(" %8i : %2i.%06i s\n", 1, time_sav[1].tv_sec,
273 time_sav[1].tv_usec);
274 output(" %8i : %2i.%06i s\n", 2, time_sav[2].tv_sec,
275 time_sav[2].tv_usec);
276 output(" %8i : %2i.%06i s\n", 3, time_sav[3].tv_sec,
277 time_sav[3].tv_usec);
278 output(" [...]\n");
279 output(" %8i : %2i.%06i s\n", sav - 3, time_sav[4].tv_sec,
280 time_sav[4].tv_usec);
281 output(" %8i : %2i.%06i s\n", sav - 2, time_sav[5].tv_sec,
282 time_sav[5].tv_usec);
283 output(" %8i : %2i.%06i s\n", sav - 1, time_sav[6].tv_sec,
284 time_sav[6].tv_usec);
285 output(" %8i : %2i.%06i s\n", sav, time_sav[7].tv_sec,
286 time_sav[7].tv_usec);
287 }
288 #endif
289
290 PASSED;
291 }
292
293 #else /* WITHOUT_XOPEN */
main(int argc,char * argv[])294 int main(int argc, char *argv[])
295 {
296 output_init();
297 UNRESOLVED(0, "This test requires XSI features");
298 }
299 #endif
300