Commit | Line | Data |
---|---|---|
ce29b371 MJ |
1 | // SPDX-FileCopyrightText: 2009 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
2 | // | |
3 | // SPDX-License-Identifier: GPL-2.0-or-later | |
4 | ||
102d1d23 | 5 | /* |
102d1d23 | 6 | * Per thread locks - test program |
102d1d23 MD |
7 | */ |
8 | ||
9 | #include <stdio.h> | |
10 | #include <pthread.h> | |
11 | #include <stdlib.h> | |
12 | #include <string.h> | |
13 | #include <sys/types.h> | |
14 | #include <sys/wait.h> | |
15 | #include <unistd.h> | |
16 | #include <stdio.h> | |
102d1d23 | 17 | #include <pthread.h> |
94b343fd | 18 | #include <errno.h> |
833dbdb6 | 19 | |
ec4e58a3 | 20 | #include <urcu/arch.h> |
01477510 | 21 | #include <urcu/assert.h> |
102d1d23 | 22 | |
94df6318 | 23 | #include "thread-id.h" |
102d1d23 | 24 | |
ec4e58a3 | 25 | #include <urcu.h> |
102d1d23 MD |
26 | |
27 | struct test_array { | |
28 | int a; | |
29 | }; | |
30 | ||
31 | static struct test_array test_array = { 8 }; | |
32 | ||
33 | struct per_thread_lock { | |
34 | pthread_mutex_t lock; | |
06f22bdb | 35 | } __attribute__((aligned(CAA_CACHE_LINE_SIZE))); /* cache-line aligned */ |
102d1d23 MD |
36 | |
37 | static struct per_thread_lock *per_thread_lock; | |
38 | ||
39 | #define OUTER_READ_LOOP 200U | |
40 | #define INNER_READ_LOOP 100000U | |
41 | #define READ_LOOP ((unsigned long long)OUTER_READ_LOOP * INNER_READ_LOOP) | |
42 | ||
43 | #define OUTER_WRITE_LOOP 10U | |
44 | #define INNER_WRITE_LOOP 200U | |
45 | #define WRITE_LOOP ((unsigned long long)OUTER_WRITE_LOOP * INNER_WRITE_LOOP) | |
46 | ||
2c9689fe MD |
47 | static int num_read; |
48 | static int num_write; | |
102d1d23 | 49 | |
2c9689fe MD |
50 | #define NR_READ num_read |
51 | #define NR_WRITE num_write | |
52 | ||
3fa18286 MD |
53 | static caa_cycles_t __attribute__((aligned(CAA_CACHE_LINE_SIZE))) *reader_time; |
54 | static caa_cycles_t __attribute__((aligned(CAA_CACHE_LINE_SIZE))) *writer_time; | |
102d1d23 | 55 | |
61c3fb60 | 56 | static |
102d1d23 MD |
57 | void *thr_reader(void *arg) |
58 | { | |
3fa18286 | 59 | caa_cycles_t time1, time2; |
102d1d23 | 60 | long tidx = (long)arg; |
4104b71f MD |
61 | unsigned int i, j; |
62 | int ret; | |
102d1d23 | 63 | |
94df6318 MD |
64 | printf("thread_begin %s, tid %lu\n", |
65 | "reader", urcu_get_thread_id()); | |
102d1d23 MD |
66 | sleep(2); |
67 | ||
06f22bdb | 68 | time1 = caa_get_cycles(); |
102d1d23 MD |
69 | for (i = 0; i < OUTER_READ_LOOP; i++) { |
70 | for (j = 0; j < INNER_READ_LOOP; j++) { | |
4104b71f MD |
71 | ret = pthread_mutex_lock(&per_thread_lock[tidx].lock); |
72 | if (ret) { | |
73 | perror("Error in pthread mutex lock"); | |
74 | exit(-1); | |
75 | } | |
01477510 | 76 | urcu_posix_assert(test_array.a == 8); |
4104b71f MD |
77 | ret = pthread_mutex_unlock(&per_thread_lock[tidx].lock); |
78 | if (ret) { | |
79 | perror("Error in pthread mutex unlock"); | |
80 | exit(-1); | |
81 | } | |
102d1d23 MD |
82 | } |
83 | } | |
06f22bdb | 84 | time2 = caa_get_cycles(); |
102d1d23 MD |
85 | |
86 | reader_time[tidx] = time2 - time1; | |
87 | ||
88 | sleep(2); | |
94df6318 MD |
89 | printf("thread_end %s, tid %lu\n", |
90 | "reader", urcu_get_thread_id()); | |
102d1d23 MD |
91 | return ((void*)1); |
92 | ||
93 | } | |
94 | ||
61c3fb60 | 95 | static |
102d1d23 MD |
96 | void *thr_writer(void *arg) |
97 | { | |
4104b71f | 98 | caa_cycles_t time1, time2; |
83e334d0 | 99 | unsigned int i, j; |
102d1d23 | 100 | long tidx; |
4104b71f | 101 | int ret; |
102d1d23 | 102 | |
94df6318 MD |
103 | printf("thread_begin %s, tid %lu\n", |
104 | "writer", urcu_get_thread_id()); | |
102d1d23 MD |
105 | sleep(2); |
106 | ||
107 | for (i = 0; i < OUTER_WRITE_LOOP; i++) { | |
108 | for (j = 0; j < INNER_WRITE_LOOP; j++) { | |
06f22bdb | 109 | time1 = caa_get_cycles(); |
102d1d23 | 110 | for (tidx = 0; tidx < NR_READ; tidx++) { |
4104b71f MD |
111 | ret = pthread_mutex_lock(&per_thread_lock[tidx].lock); |
112 | if (ret) { | |
113 | perror("Error in pthread mutex lock"); | |
114 | exit(-1); | |
115 | } | |
102d1d23 MD |
116 | } |
117 | test_array.a = 8; | |
118 | for (tidx = NR_READ - 1; tidx >= 0; tidx--) { | |
4104b71f MD |
119 | ret = pthread_mutex_unlock(&per_thread_lock[tidx].lock); |
120 | if (ret) { | |
121 | perror("Error in pthread mutex unlock"); | |
122 | exit(-1); | |
123 | } | |
102d1d23 | 124 | } |
06f22bdb | 125 | time2 = caa_get_cycles(); |
102d1d23 | 126 | writer_time[(unsigned long)arg] += time2 - time1; |
fc606a74 | 127 | usleep(1); |
102d1d23 | 128 | } |
102d1d23 MD |
129 | } |
130 | ||
94df6318 MD |
131 | printf("thread_end %s, tid %lu\n", |
132 | "writer", urcu_get_thread_id()); | |
102d1d23 MD |
133 | return ((void*)2); |
134 | } | |
135 | ||
2c9689fe | 136 | int main(int argc, char **argv) |
102d1d23 MD |
137 | { |
138 | int err; | |
2c9689fe | 139 | pthread_t *tid_reader, *tid_writer; |
102d1d23 MD |
140 | void *tret; |
141 | int i; | |
3fa18286 MD |
142 | caa_cycles_t tot_rtime = 0; |
143 | caa_cycles_t tot_wtime = 0; | |
102d1d23 | 144 | |
2c9689fe MD |
145 | if (argc < 2) { |
146 | printf("Usage : %s nr_readers nr_writers\n", argv[0]); | |
147 | exit(-1); | |
148 | } | |
149 | num_read = atoi(argv[1]); | |
150 | num_write = atoi(argv[2]); | |
151 | ||
9aa14175 MD |
152 | reader_time = calloc(num_read, sizeof(*reader_time)); |
153 | writer_time = calloc(num_write, sizeof(*writer_time)); | |
154 | tid_reader = calloc(num_read, sizeof(*tid_reader)); | |
155 | tid_writer = calloc(num_write, sizeof(*tid_writer)); | |
2c9689fe | 156 | |
94df6318 MD |
157 | printf("thread %-6s, tid %lu\n", |
158 | "main", urcu_get_thread_id()); | |
102d1d23 MD |
159 | |
160 | per_thread_lock = malloc(sizeof(struct per_thread_lock) * NR_READ); | |
161 | ||
162 | for (i = 0; i < NR_READ; i++) { | |
163 | pthread_mutex_init(&per_thread_lock[i].lock, NULL); | |
164 | } | |
165 | for (i = 0; i < NR_READ; i++) { | |
166 | err = pthread_create(&tid_reader[i], NULL, thr_reader, | |
167 | (void *)(long)i); | |
168 | if (err != 0) | |
169 | exit(1); | |
170 | } | |
171 | for (i = 0; i < NR_WRITE; i++) { | |
172 | err = pthread_create(&tid_writer[i], NULL, thr_writer, | |
173 | (void *)(long)i); | |
174 | if (err != 0) | |
175 | exit(1); | |
176 | } | |
177 | ||
178 | sleep(10); | |
179 | ||
180 | for (i = 0; i < NR_READ; i++) { | |
181 | err = pthread_join(tid_reader[i], &tret); | |
182 | if (err != 0) | |
183 | exit(1); | |
184 | tot_rtime += reader_time[i]; | |
185 | } | |
186 | for (i = 0; i < NR_WRITE; i++) { | |
187 | err = pthread_join(tid_writer[i], &tret); | |
188 | if (err != 0) | |
189 | exit(1); | |
190 | tot_wtime += writer_time[i]; | |
191 | } | |
192 | printf("Time per read : %g cycles\n", | |
193 | (double)tot_rtime / ((double)NR_READ * (double)READ_LOOP)); | |
194 | printf("Time per write : %g cycles\n", | |
195 | (double)tot_wtime / ((double)NR_WRITE * (double)WRITE_LOOP)); | |
196 | free(per_thread_lock); | |
197 | ||
2c9689fe MD |
198 | free(reader_time); |
199 | free(writer_time); | |
200 | free(tid_reader); | |
201 | free(tid_writer); | |
202 | ||
102d1d23 MD |
203 | return 0; |
204 | } |