tests: add missing unsigned long casts to pthread_self()
[urcu.git] / tests / test_rwlock_timing.c
1 /*
2 * test_urcu.c
3 *
4 * Userspace RCU library - test program
5 *
6 * Copyright February 2009 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License along
19 * with this program; if not, write to the Free Software Foundation, Inc.,
20 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
21 */
22
23 #define _GNU_SOURCE
24 #include <stdio.h>
25 #include <pthread.h>
26 #include <stdlib.h>
27 #include <string.h>
28 #include <sys/types.h>
29 #include <sys/wait.h>
30 #include <unistd.h>
31 #include <stdio.h>
32 #include <assert.h>
33 #include <pthread.h>
34 #include <errno.h>
35
36 #include <urcu/arch.h>
37
38 #ifdef __linux__
39 #include <syscall.h>
40 #endif
41
42 #if defined(_syscall0)
43 _syscall0(pid_t, gettid)
44 #elif defined(__NR_gettid)
45 static inline pid_t gettid(void)
46 {
47 return syscall(__NR_gettid);
48 }
49 #else
50 #warning "use pid as tid"
51 static inline pid_t gettid(void)
52 {
53 return getpid();
54 }
55 #endif
56
57 #include <urcu.h>
58
59 struct test_array {
60 int a;
61 };
62
63 pthread_rwlock_t lock = PTHREAD_RWLOCK_INITIALIZER;
64
65 static struct test_array test_array = { 8 };
66
67 #define OUTER_READ_LOOP 200U
68 #define INNER_READ_LOOP 100000U
69 #define READ_LOOP ((unsigned long long)OUTER_READ_LOOP * INNER_READ_LOOP)
70
71 #define OUTER_WRITE_LOOP 10U
72 #define INNER_WRITE_LOOP 200U
73 #define WRITE_LOOP ((unsigned long long)OUTER_WRITE_LOOP * INNER_WRITE_LOOP)
74
75 static int num_read;
76 static int num_write;
77
78 #define NR_READ num_read
79 #define NR_WRITE num_write
80
81 static cycles_t __attribute__((aligned(CAA_CACHE_LINE_SIZE))) *reader_time;
82 static cycles_t __attribute__((aligned(CAA_CACHE_LINE_SIZE))) *writer_time;
83
84 void *thr_reader(void *arg)
85 {
86 int i, j;
87 cycles_t time1, time2;
88
89 printf("thread_begin %s, thread id : %lx, tid %lu\n",
90 "reader", (unsigned long) pthread_self(),
91 (unsigned long) gettid());
92 sleep(2);
93
94 time1 = caa_get_cycles();
95 for (i = 0; i < OUTER_READ_LOOP; i++) {
96 for (j = 0; j < INNER_READ_LOOP; j++) {
97 pthread_rwlock_rdlock(&lock);
98 assert(test_array.a == 8);
99 pthread_rwlock_unlock(&lock);
100 }
101 }
102 time2 = caa_get_cycles();
103
104 reader_time[(unsigned long)arg] = time2 - time1;
105
106 sleep(2);
107 printf("thread_end %s, thread id : %lx, tid %lu\n",
108 "reader", (unsigned long) pthread_self(),
109 (unsigned long) gettid());
110 return ((void*)1);
111
112 }
113
114 void *thr_writer(void *arg)
115 {
116 int i, j;
117 cycles_t time1, time2;
118
119 printf("thread_begin %s, thread id : %lx, tid %lu\n",
120 "writer", (unsigned long) pthread_self(),
121 (unsigned long) gettid());
122 sleep(2);
123
124 for (i = 0; i < OUTER_WRITE_LOOP; i++) {
125 for (j = 0; j < INNER_WRITE_LOOP; j++) {
126 time1 = caa_get_cycles();
127 pthread_rwlock_wrlock(&lock);
128 test_array.a = 8;
129 pthread_rwlock_unlock(&lock);
130 time2 = caa_get_cycles();
131 writer_time[(unsigned long)arg] += time2 - time1;
132 usleep(1);
133 }
134 }
135
136 printf("thread_end %s, thread id : %lx, tid %lu\n",
137 "writer", (unsigned long) pthread_self(),
138 (unsigned long) gettid());
139 return ((void*)2);
140 }
141
142 int main(int argc, char **argv)
143 {
144 int err;
145 pthread_t *tid_reader, *tid_writer;
146 void *tret;
147 int i;
148 cycles_t tot_rtime = 0;
149 cycles_t tot_wtime = 0;
150
151 if (argc < 2) {
152 printf("Usage : %s nr_readers nr_writers\n", argv[0]);
153 exit(-1);
154 }
155 num_read = atoi(argv[1]);
156 num_write = atoi(argv[2]);
157
158 reader_time = malloc(sizeof(*reader_time) * num_read);
159 writer_time = malloc(sizeof(*writer_time) * num_write);
160 tid_reader = malloc(sizeof(*tid_reader) * num_read);
161 tid_writer = malloc(sizeof(*tid_writer) * num_write);
162
163 printf("thread %-6s, thread id : %lx, tid %lu\n",
164 "main", (unsigned long) pthread_self(),
165 (unsigned long) gettid());
166
167 for (i = 0; i < NR_READ; i++) {
168 err = pthread_create(&tid_reader[i], NULL, thr_reader,
169 (void *)(long)i);
170 if (err != 0)
171 exit(1);
172 }
173 for (i = 0; i < NR_WRITE; i++) {
174 err = pthread_create(&tid_writer[i], NULL, thr_writer,
175 (void *)(long)i);
176 if (err != 0)
177 exit(1);
178 }
179
180 sleep(10);
181
182 for (i = 0; i < NR_READ; i++) {
183 err = pthread_join(tid_reader[i], &tret);
184 if (err != 0)
185 exit(1);
186 tot_rtime += reader_time[i];
187 }
188 for (i = 0; i < NR_WRITE; i++) {
189 err = pthread_join(tid_writer[i], &tret);
190 if (err != 0)
191 exit(1);
192 tot_wtime += writer_time[i];
193 }
194 printf("Time per read : %g cycles\n",
195 (double)tot_rtime / ((double)NR_READ * (double)READ_LOOP));
196 printf("Time per write : %g cycles\n",
197 (double)tot_wtime / ((double)NR_WRITE * (double)WRITE_LOOP));
198
199 free(reader_time);
200 free(writer_time);
201 free(tid_reader);
202 free(tid_writer);
203
204 return 0;
205 }
This page took 0.054436 seconds and 4 git commands to generate.