1 | /* Copyright Joyent, Inc. and other Node contributors. All rights reserved. |
2 | * |
3 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
4 | * of this software and associated documentation files (the "Software"), to |
5 | * deal in the Software without restriction, including without limitation the |
6 | * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
7 | * sell copies of the Software, and to permit persons to whom the Software is |
8 | * furnished to do so, subject to the following conditions: |
9 | * |
10 | * The above copyright notice and this permission notice shall be included in |
11 | * all copies or substantial portions of the Software. |
12 | * |
13 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
14 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
15 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
16 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
17 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
18 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
19 | * IN THE SOFTWARE. |
20 | */ |
21 | |
22 | #include "uv.h" |
23 | #include "task.h" |
24 | |
25 | #include <string.h> |
26 | #include <errno.h> |
27 | |
28 | typedef struct { |
29 | uv_barrier_t barrier; |
30 | int delay; |
31 | volatile int posted; |
32 | int main_barrier_wait_rval; |
33 | int worker_barrier_wait_rval; |
34 | } worker_config; |
35 | |
36 | |
37 | static void worker(void* arg) { |
38 | worker_config* c = arg; |
39 | |
40 | if (c->delay) |
41 | uv_sleep(c->delay); |
42 | |
43 | c->worker_barrier_wait_rval = uv_barrier_wait(&c->barrier); |
44 | } |
45 | |
46 | |
47 | TEST_IMPL(barrier_1) { |
48 | uv_thread_t thread; |
49 | worker_config wc; |
50 | |
51 | memset(&wc, 0, sizeof(wc)); |
52 | |
53 | ASSERT(0 == uv_barrier_init(&wc.barrier, 2)); |
54 | ASSERT(0 == uv_thread_create(&thread, worker, &wc)); |
55 | |
56 | uv_sleep(100); |
57 | wc.main_barrier_wait_rval = uv_barrier_wait(&wc.barrier); |
58 | |
59 | ASSERT(0 == uv_thread_join(&thread)); |
60 | uv_barrier_destroy(&wc.barrier); |
61 | |
62 | ASSERT(1 == (wc.main_barrier_wait_rval ^ wc.worker_barrier_wait_rval)); |
63 | |
64 | return 0; |
65 | } |
66 | |
67 | |
68 | TEST_IMPL(barrier_2) { |
69 | uv_thread_t thread; |
70 | worker_config wc; |
71 | |
72 | memset(&wc, 0, sizeof(wc)); |
73 | wc.delay = 100; |
74 | |
75 | ASSERT(0 == uv_barrier_init(&wc.barrier, 2)); |
76 | ASSERT(0 == uv_thread_create(&thread, worker, &wc)); |
77 | |
78 | wc.main_barrier_wait_rval = uv_barrier_wait(&wc.barrier); |
79 | |
80 | ASSERT(0 == uv_thread_join(&thread)); |
81 | uv_barrier_destroy(&wc.barrier); |
82 | |
83 | ASSERT(1 == (wc.main_barrier_wait_rval ^ wc.worker_barrier_wait_rval)); |
84 | |
85 | return 0; |
86 | } |
87 | |
88 | |
89 | TEST_IMPL(barrier_3) { |
90 | uv_thread_t thread; |
91 | worker_config wc; |
92 | |
93 | memset(&wc, 0, sizeof(wc)); |
94 | |
95 | ASSERT(0 == uv_barrier_init(&wc.barrier, 2)); |
96 | ASSERT(0 == uv_thread_create(&thread, worker, &wc)); |
97 | |
98 | wc.main_barrier_wait_rval = uv_barrier_wait(&wc.barrier); |
99 | |
100 | ASSERT(0 == uv_thread_join(&thread)); |
101 | uv_barrier_destroy(&wc.barrier); |
102 | |
103 | ASSERT(1 == (wc.main_barrier_wait_rval ^ wc.worker_barrier_wait_rval)); |
104 | |
105 | return 0; |
106 | } |
107 | |
108 | static void serial_worker(void* data) { |
109 | uv_barrier_t* barrier; |
110 | |
111 | barrier = data; |
112 | if (uv_barrier_wait(barrier) > 0) |
113 | uv_barrier_destroy(barrier); |
114 | |
115 | uv_sleep(100); /* Wait a bit before terminating. */ |
116 | } |
117 | |
118 | /* Ensure that uv_barrier_wait returns positive only after all threads have |
119 | * exited the barrier. If this value is returned too early and the barrier is |
120 | * destroyed prematurely, then this test may see a crash. */ |
121 | TEST_IMPL(barrier_serial_thread) { |
122 | uv_thread_t threads[4]; |
123 | uv_barrier_t barrier; |
124 | unsigned i; |
125 | |
126 | ASSERT(0 == uv_barrier_init(&barrier, ARRAY_SIZE(threads) + 1)); |
127 | |
128 | for (i = 0; i < ARRAY_SIZE(threads); ++i) |
129 | ASSERT(0 == uv_thread_create(&threads[i], serial_worker, &barrier)); |
130 | |
131 | if (uv_barrier_wait(&barrier) > 0) |
132 | uv_barrier_destroy(&barrier); |
133 | |
134 | for (i = 0; i < ARRAY_SIZE(threads); ++i) |
135 | ASSERT(0 == uv_thread_join(&threads[i])); |
136 | |
137 | return 0; |
138 | } |
139 | |
140 | /* Single thread uv_barrier_wait should return correct return value. */ |
141 | TEST_IMPL(barrier_serial_thread_single) { |
142 | uv_barrier_t barrier; |
143 | |
144 | ASSERT(0 == uv_barrier_init(&barrier, 1)); |
145 | ASSERT(0 < uv_barrier_wait(&barrier)); |
146 | uv_barrier_destroy(&barrier); |
147 | return 0; |
148 | } |
149 | |