1 /*
2 * Copyright © 2015 Intel Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21 * IN THE SOFTWARE.
22 */
23
24 #include <pthread.h>
25
26 #include "anv_private.h"
27 #include "test_common.h"
28
29 #define NUM_THREADS 16
30 #define STATES_PER_THREAD 1024
31 #define NUM_RUNS 64
32
33 struct job {
34 pthread_t thread;
35 unsigned id;
36 struct anv_state_pool *pool;
37 uint32_t offsets[STATES_PER_THREAD];
38 } jobs[NUM_THREADS];
39
40 pthread_barrier_t barrier;
41
alloc_states(void * _job)42 static void *alloc_states(void *_job)
43 {
44 struct job *job = _job;
45
46 pthread_barrier_wait(&barrier);
47
48 for (unsigned i = 0; i < STATES_PER_THREAD; i++) {
49 struct anv_state state = anv_state_pool_alloc(job->pool, 16, 16);
50 job->offsets[i] = state.offset;
51 }
52
53 return NULL;
54 }
55
run_test()56 static void run_test()
57 {
58 struct anv_physical_device physical_device = { };
59 struct anv_device device = {
60 .physical = &physical_device,
61 };
62 struct anv_state_pool state_pool;
63
64 pthread_mutex_init(&device.mutex, NULL);
65 anv_bo_cache_init(&device.bo_cache);
66 anv_state_pool_init(&state_pool, &device, 4096, 0, 64);
67
68 pthread_barrier_init(&barrier, NULL, NUM_THREADS);
69
70 for (unsigned i = 0; i < NUM_THREADS; i++) {
71 jobs[i].pool = &state_pool;
72 jobs[i].id = i;
73 pthread_create(&jobs[i].thread, NULL, alloc_states, &jobs[i]);
74 }
75
76 for (unsigned i = 0; i < NUM_THREADS; i++)
77 pthread_join(jobs[i].thread, NULL);
78
79 /* A list of indices, one per thread */
80 unsigned next[NUM_THREADS];
81 memset(next, 0, sizeof(next));
82
83 int highest = -1;
84 while (true) {
85 /* First, we find which thread has the highest next element */
86 int thread_max = -1;
87 int max_thread_idx = -1;
88 for (unsigned i = 0; i < NUM_THREADS; i++) {
89 if (next[i] >= STATES_PER_THREAD)
90 continue;
91
92 if (thread_max < jobs[i].offsets[next[i]]) {
93 thread_max = jobs[i].offsets[next[i]];
94 max_thread_idx = i;
95 }
96 }
97
98 /* The only way this can happen is if all of the next[] values are at
99 * BLOCKS_PER_THREAD, in which case, we're done.
100 */
101 if (thread_max == -1)
102 break;
103
104 /* That next element had better be higher than the previous highest */
105 ASSERT(jobs[max_thread_idx].offsets[next[max_thread_idx]] > highest);
106
107 highest = jobs[max_thread_idx].offsets[next[max_thread_idx]];
108 next[max_thread_idx]++;
109 }
110
111 anv_state_pool_finish(&state_pool);
112 pthread_mutex_destroy(&device.mutex);
113 }
114
main(void)115 int main(void)
116 {
117 for (unsigned i = 0; i < NUM_RUNS; i++)
118 run_test();
119 }
120