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 8
30 #define STATES_PER_THREAD 1024
31 #define NUM_RUNS 32
32
33 static 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 static 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 struct anv_state_pool state_pool;
61 const uint32_t _1Gb = 1024 * 1024 * 1024;
62
63 test_device_info_init(&physical_device.info);
64 anv_device_set_physical(&device, &physical_device);
65 device.kmd_backend = anv_kmd_backend_get(INTEL_KMD_TYPE_STUB);
66 pthread_mutex_init(&device.mutex, NULL);
67 anv_bo_cache_init(&device.bo_cache, &device);
68 anv_state_pool_init(&state_pool, &device,
69 &(struct anv_state_pool_params) {
70 .name = "test",
71 .base_address = 4096,
72 .start_offset = 0,
73 .block_size = 64,
74 .max_size = _1Gb,
75 });
76
77 pthread_barrier_init(&barrier, NULL, NUM_THREADS);
78
79 for (unsigned i = 0; i < NUM_THREADS; i++) {
80 jobs[i].pool = &state_pool;
81 jobs[i].id = i;
82 pthread_create(&jobs[i].thread, NULL, alloc_states, &jobs[i]);
83 }
84
85 for (unsigned i = 0; i < NUM_THREADS; i++)
86 pthread_join(jobs[i].thread, NULL);
87
88 /* A list of indices, one per thread */
89 unsigned next[NUM_THREADS];
90 memset(next, 0, sizeof(next));
91
92 int highest = -1;
93 while (true) {
94 /* First, we find which thread has the highest next element */
95 int thread_max = -1;
96 int max_thread_idx = -1;
97 for (unsigned i = 0; i < NUM_THREADS; i++) {
98 if (next[i] >= STATES_PER_THREAD)
99 continue;
100
101 if (thread_max < jobs[i].offsets[next[i]]) {
102 thread_max = jobs[i].offsets[next[i]];
103 max_thread_idx = i;
104 }
105 }
106
107 /* The only way this can happen is if all of the next[] values are at
108 * BLOCKS_PER_THREAD, in which case, we're done.
109 */
110 if (thread_max == -1)
111 break;
112
113 /* That next element had better be higher than the previous highest */
114 ASSERT(jobs[max_thread_idx].offsets[next[max_thread_idx]] > highest);
115
116 highest = jobs[max_thread_idx].offsets[next[max_thread_idx]];
117 next[max_thread_idx]++;
118 }
119
120 anv_state_pool_finish(&state_pool);
121 anv_bo_cache_finish(&device.bo_cache);
122 pthread_mutex_destroy(&device.mutex);
123 }
124
125 void state_pool_no_free_test(void);
126
state_pool_no_free_test(void)127 void state_pool_no_free_test(void)
128 {
129 for (unsigned i = 0; i < NUM_RUNS; i++)
130 run_test();
131 }
132