1 #include "qemu/osdep.h"
2 #include "qemu-common.h"
4 #include "block/thread-pool.h"
5 #include "block/block.h"
6 #include "qapi/error.h"
7 #include "qemu/timer.h"
8 #include "qemu/error-report.h"
9 #include "qemu/main-loop.h"
11 static AioContext *ctx;
12 static ThreadPool *pool;
21 static int worker_cb(void *opaque)
23 WorkerTestData *data = opaque;
24 return atomic_fetch_inc(&data->n);
27 static int long_cb(void *opaque)
29 WorkerTestData *data = opaque;
36 static void done_cb(void *opaque, int ret)
38 WorkerTestData *data = opaque;
39 g_assert(data->ret == -EINPROGRESS || data->ret == -ECANCELED);
43 /* Callbacks are serialized, so no need to use atomic ops. */
47 static void test_submit(void)
49 WorkerTestData data = { .n = 0 };
50 thread_pool_submit(pool, worker_cb, &data);
54 g_assert_cmpint(data.n, ==, 1);
57 static void test_submit_aio(void)
59 WorkerTestData data = { .n = 0, .ret = -EINPROGRESS };
60 data.aiocb = thread_pool_submit_aio(pool, worker_cb, &data,
63 /* The callbacks are not called until after the first wait. */
65 g_assert_cmpint(data.ret, ==, -EINPROGRESS);
66 while (data.ret == -EINPROGRESS) {
69 g_assert_cmpint(active, ==, 0);
70 g_assert_cmpint(data.n, ==, 1);
71 g_assert_cmpint(data.ret, ==, 0);
74 static void co_test_cb(void *opaque)
76 WorkerTestData *data = opaque;
80 data->ret = -EINPROGRESS;
81 thread_pool_submit_co(pool, worker_cb, data);
83 /* The test continues in test_submit_co, after qemu_coroutine_enter... */
85 g_assert_cmpint(data->n, ==, 1);
89 /* The test continues in test_submit_co, after aio_poll... */
92 static void test_submit_co(void)
95 Coroutine *co = qemu_coroutine_create(co_test_cb, &data);
97 qemu_coroutine_enter(co);
99 /* Back here once the worker has started. */
101 g_assert_cmpint(active, ==, 1);
102 g_assert_cmpint(data.ret, ==, -EINPROGRESS);
104 /* aio_poll will execute the rest of the coroutine. */
106 while (data.ret == -EINPROGRESS) {
110 /* Back here after the coroutine has finished. */
112 g_assert_cmpint(active, ==, 0);
113 g_assert_cmpint(data.ret, ==, 0);
116 static void test_submit_many(void)
118 WorkerTestData data[100];
121 /* Start more work items than there will be threads. */
122 for (i = 0; i < 100; i++) {
124 data[i].ret = -EINPROGRESS;
125 thread_pool_submit_aio(pool, worker_cb, &data[i], done_cb, &data[i]);
132 for (i = 0; i < 100; i++) {
133 g_assert_cmpint(data[i].n, ==, 1);
134 g_assert_cmpint(data[i].ret, ==, 0);
138 static void do_test_cancel(bool sync)
140 WorkerTestData data[100];
144 /* Start more work items than there will be threads, to ensure
149 /* Start long running jobs, to ensure we can cancel some. */
150 for (i = 0; i < 100; i++) {
152 data[i].ret = -EINPROGRESS;
153 data[i].aiocb = thread_pool_submit_aio(pool, long_cb, &data[i],
157 /* Starting the threads may be left to a bottom half. Let it
158 * run, but do not waste too much time...
162 aio_poll(ctx, false);
164 /* Wait some time for the threads to start, with some sanity
165 * testing on the behavior of the scheduler...
167 g_assert_cmpint(active, ==, 100);
169 g_assert_cmpint(active, >, 50);
171 /* Cancel the jobs that haven't been started yet. */
173 for (i = 0; i < 100; i++) {
174 if (atomic_cmpxchg(&data[i].n, 0, 3) == 0) {
175 data[i].ret = -ECANCELED;
177 bdrv_aio_cancel(data[i].aiocb);
179 bdrv_aio_cancel_async(data[i].aiocb);
184 g_assert_cmpint(active, >, 0);
185 g_assert_cmpint(num_canceled, <, 100);
187 for (i = 0; i < 100; i++) {
188 if (data[i].aiocb && data[i].n != 3) {
190 /* Canceling the others will be a blocking operation. */
191 bdrv_aio_cancel(data[i].aiocb);
193 bdrv_aio_cancel_async(data[i].aiocb);
198 /* Finish execution and execute any remaining callbacks. */
202 g_assert_cmpint(active, ==, 0);
203 for (i = 0; i < 100; i++) {
204 if (data[i].n == 3) {
205 g_assert_cmpint(data[i].ret, ==, -ECANCELED);
206 g_assert(data[i].aiocb == NULL);
208 g_assert_cmpint(data[i].n, ==, 2);
209 g_assert(data[i].ret == 0 || data[i].ret == -ECANCELED);
210 g_assert(data[i].aiocb == NULL);
215 static void test_cancel(void)
217 do_test_cancel(true);
220 static void test_cancel_async(void)
222 do_test_cancel(false);
225 int main(int argc, char **argv)
229 qemu_init_main_loop(&error_abort);
230 ctx = qemu_get_current_aio_context();
231 pool = aio_get_thread_pool(ctx);
233 g_test_init(&argc, &argv, NULL);
234 g_test_add_func("/thread-pool/submit", test_submit);
235 g_test_add_func("/thread-pool/submit-aio", test_submit_aio);
236 g_test_add_func("/thread-pool/submit-co", test_submit_co);
237 g_test_add_func("/thread-pool/submit-many", test_submit_many);
238 g_test_add_func("/thread-pool/cancel", test_cancel);
239 g_test_add_func("/thread-pool/cancel-async", test_cancel_async);