2 #include "qemu-common.h"
4 #include "thread-pool.h"
10 BlockDriverAIOCB *aiocb;
15 static int worker_cb(void *opaque)
17 WorkerTestData *data = opaque;
18 return __sync_fetch_and_add(&data->n, 1);
21 static int long_cb(void *opaque)
23 WorkerTestData *data = opaque;
24 __sync_fetch_and_add(&data->n, 1);
26 __sync_fetch_and_add(&data->n, 1);
30 static void done_cb(void *opaque, int ret)
32 WorkerTestData *data = opaque;
33 g_assert_cmpint(data->ret, ==, -EINPROGRESS);
37 /* Callbacks are serialized, so no need to use atomic ops. */
41 /* A non-blocking poll of the main AIO context (we cannot use aio_poll
42 * because we do not know the AioContext).
44 static void qemu_aio_wait_nonblocking(void)
50 /* Wait until all aio and bh activity has finished */
51 static void qemu_aio_wait_all(void)
53 while (qemu_aio_wait()) {
58 static void test_submit(void)
60 WorkerTestData data = { .n = 0 };
61 thread_pool_submit(worker_cb, &data);
63 g_assert_cmpint(data.n, ==, 1);
66 static void test_submit_aio(void)
68 WorkerTestData data = { .n = 0, .ret = -EINPROGRESS };
69 data.aiocb = thread_pool_submit_aio(worker_cb, &data, done_cb, &data);
71 /* The callbacks are not called until after the first wait. */
73 g_assert_cmpint(data.ret, ==, -EINPROGRESS);
75 g_assert_cmpint(active, ==, 0);
76 g_assert_cmpint(data.n, ==, 1);
77 g_assert_cmpint(data.ret, ==, 0);
80 static void co_test_cb(void *opaque)
82 WorkerTestData *data = opaque;
86 data->ret = -EINPROGRESS;
87 thread_pool_submit_co(worker_cb, data);
89 /* The test continues in test_submit_co, after qemu_coroutine_enter... */
91 g_assert_cmpint(data->n, ==, 1);
95 /* The test continues in test_submit_co, after qemu_aio_wait_all... */
98 static void test_submit_co(void)
101 Coroutine *co = qemu_coroutine_create(co_test_cb);
103 qemu_coroutine_enter(co, &data);
105 /* Back here once the worker has started. */
107 g_assert_cmpint(active, ==, 1);
108 g_assert_cmpint(data.ret, ==, -EINPROGRESS);
110 /* qemu_aio_wait_all will execute the rest of the coroutine. */
114 /* Back here after the coroutine has finished. */
116 g_assert_cmpint(active, ==, 0);
117 g_assert_cmpint(data.ret, ==, 0);
120 static void test_submit_many(void)
122 WorkerTestData data[100];
125 /* Start more work items than there will be threads. */
126 for (i = 0; i < 100; i++) {
128 data[i].ret = -EINPROGRESS;
129 thread_pool_submit_aio(worker_cb, &data[i], done_cb, &data[i]);
136 for (i = 0; i < 100; i++) {
137 g_assert_cmpint(data[i].n, ==, 1);
138 g_assert_cmpint(data[i].ret, ==, 0);
142 static void test_cancel(void)
144 WorkerTestData data[100];
148 /* Start more work items than there will be threads, to ensure
153 /* Start long running jobs, to ensure we can cancel some. */
154 for (i = 0; i < 100; i++) {
156 data[i].ret = -EINPROGRESS;
157 data[i].aiocb = thread_pool_submit_aio(long_cb, &data[i],
161 /* Starting the threads may be left to a bottom half. Let it
162 * run, but do not waste too much time...
165 qemu_aio_wait_nonblocking();
167 /* Wait some time for the threads to start, with some sanity
168 * testing on the behavior of the scheduler...
170 g_assert_cmpint(active, ==, 100);
172 g_assert_cmpint(active, >, 50);
174 /* Cancel the jobs that haven't been started yet. */
176 for (i = 0; i < 100; i++) {
177 if (__sync_val_compare_and_swap(&data[i].n, 0, 3) == 0) {
178 data[i].ret = -ECANCELED;
179 bdrv_aio_cancel(data[i].aiocb);
184 g_assert_cmpint(active, >, 0);
185 g_assert_cmpint(num_canceled, <, 100);
187 /* Canceling the others will be a blocking operation. */
188 for (i = 0; i < 100; i++) {
189 if (data[i].n != 3) {
190 bdrv_aio_cancel(data[i].aiocb);
194 /* Finish execution and execute any remaining callbacks. */
196 g_assert_cmpint(active, ==, 0);
197 for (i = 0; i < 100; i++) {
198 if (data[i].n == 3) {
199 g_assert_cmpint(data[i].ret, ==, -ECANCELED);
200 g_assert(data[i].aiocb != NULL);
202 g_assert_cmpint(data[i].n, ==, 2);
203 g_assert_cmpint(data[i].ret, ==, 0);
204 g_assert(data[i].aiocb == NULL);
209 int main(int argc, char **argv)
211 /* These should be removed once each AioContext has its thread pool.
212 * The test should create its own AioContext.
214 qemu_init_main_loop();
217 g_test_init(&argc, &argv, NULL);
218 g_test_add_func("/thread-pool/submit", test_submit);
219 g_test_add_func("/thread-pool/submit-aio", test_submit_aio);
220 g_test_add_func("/thread-pool/submit-co", test_submit_co);
221 g_test_add_func("/thread-pool/submit-many", test_submit_many);
222 g_test_add_func("/thread-pool/cancel", test_cancel);