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;
30 if (atomic_cmpxchg(&data->n, 0, 1) == 0) {
32 atomic_or(&data->n, 2);
37 static void done_cb(void *opaque, int ret)
39 WorkerTestData *data = opaque;
40 g_assert(data->ret == -EINPROGRESS || data->ret == -ECANCELED);
44 /* Callbacks are serialized, so no need to use atomic ops. */
48 static void test_submit(void)
50 WorkerTestData data = { .n = 0 };
51 thread_pool_submit(pool, worker_cb, &data);
55 g_assert_cmpint(data.n, ==, 1);
58 static void test_submit_aio(void)
60 WorkerTestData data = { .n = 0, .ret = -EINPROGRESS };
61 data.aiocb = thread_pool_submit_aio(pool, worker_cb, &data,
64 /* The callbacks are not called until after the first wait. */
66 g_assert_cmpint(data.ret, ==, -EINPROGRESS);
67 while (data.ret == -EINPROGRESS) {
70 g_assert_cmpint(active, ==, 0);
71 g_assert_cmpint(data.n, ==, 1);
72 g_assert_cmpint(data.ret, ==, 0);
75 static void co_test_cb(void *opaque)
77 WorkerTestData *data = opaque;
81 data->ret = -EINPROGRESS;
82 thread_pool_submit_co(pool, worker_cb, data);
84 /* The test continues in test_submit_co, after qemu_coroutine_enter... */
86 g_assert_cmpint(data->n, ==, 1);
90 /* The test continues in test_submit_co, after aio_poll... */
93 static void test_submit_co(void)
96 Coroutine *co = qemu_coroutine_create(co_test_cb, &data);
98 qemu_coroutine_enter(co);
100 /* Back here once the worker has started. */
102 g_assert_cmpint(active, ==, 1);
103 g_assert_cmpint(data.ret, ==, -EINPROGRESS);
105 /* aio_poll will execute the rest of the coroutine. */
107 while (data.ret == -EINPROGRESS) {
111 /* Back here after the coroutine has finished. */
113 g_assert_cmpint(active, ==, 0);
114 g_assert_cmpint(data.ret, ==, 0);
117 static void test_submit_many(void)
119 WorkerTestData data[100];
122 /* Start more work items than there will be threads. */
123 for (i = 0; i < 100; i++) {
125 data[i].ret = -EINPROGRESS;
126 thread_pool_submit_aio(pool, worker_cb, &data[i], done_cb, &data[i]);
133 for (i = 0; i < 100; i++) {
134 g_assert_cmpint(data[i].n, ==, 1);
135 g_assert_cmpint(data[i].ret, ==, 0);
139 static void do_test_cancel(bool sync)
141 WorkerTestData data[100];
145 /* Start more work items than there will be threads, to ensure
150 /* Start long running jobs, to ensure we can cancel some. */
151 for (i = 0; i < 100; i++) {
153 data[i].ret = -EINPROGRESS;
154 data[i].aiocb = thread_pool_submit_aio(pool, long_cb, &data[i],
158 /* Starting the threads may be left to a bottom half. Let it
159 * run, but do not waste too much time...
163 aio_poll(ctx, false);
165 /* Wait some time for the threads to start, with some sanity
166 * testing on the behavior of the scheduler...
168 g_assert_cmpint(active, ==, 100);
170 g_assert_cmpint(active, >, 50);
172 /* Cancel the jobs that haven't been started yet. */
174 for (i = 0; i < 100; i++) {
175 if (atomic_cmpxchg(&data[i].n, 0, 4) == 0) {
176 data[i].ret = -ECANCELED;
178 bdrv_aio_cancel(data[i].aiocb);
180 bdrv_aio_cancel_async(data[i].aiocb);
185 g_assert_cmpint(active, >, 0);
186 g_assert_cmpint(num_canceled, <, 100);
188 for (i = 0; i < 100; i++) {
189 if (data[i].aiocb && atomic_read(&data[i].n) < 4) {
191 /* Canceling the others will be a blocking operation. */
192 bdrv_aio_cancel(data[i].aiocb);
194 bdrv_aio_cancel_async(data[i].aiocb);
199 /* Finish execution and execute any remaining callbacks. */
203 g_assert_cmpint(active, ==, 0);
204 for (i = 0; i < 100; i++) {
205 g_assert(data[i].aiocb == NULL);
208 fprintf(stderr, "Callback not canceled but never started?\n");
211 /* Couldn't be canceled asynchronously, must have completed. */
212 g_assert_cmpint(data[i].ret, ==, 0);
215 /* Could be canceled asynchronously, never started. */
216 g_assert_cmpint(data[i].ret, ==, -ECANCELED);
219 fprintf(stderr, "Callback aborted while running?\n");
225 static void test_cancel(void)
227 do_test_cancel(true);
230 static void test_cancel_async(void)
232 do_test_cancel(false);
235 int main(int argc, char **argv)
237 qemu_init_main_loop(&error_abort);
238 ctx = qemu_get_current_aio_context();
239 pool = aio_get_thread_pool(ctx);
241 g_test_init(&argc, &argv, NULL);
242 g_test_add_func("/thread-pool/submit", test_submit);
243 g_test_add_func("/thread-pool/submit-aio", test_submit_aio);
244 g_test_add_func("/thread-pool/submit-co", test_submit_co);
245 g_test_add_func("/thread-pool/submit-many", test_submit_many);
246 g_test_add_func("/thread-pool/cancel", test_cancel);
247 g_test_add_func("/thread-pool/cancel-async", test_cancel_async);