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tests: cover aio_co_enter from a worker thread without BQL taken
Add a testcase for the test fixed by commit 'async: the main AioContext is only "current" if under the BQL. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <20210614110214.726722-1-pbonzini@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Signed-off-by: Eric Blake <eblake@redhat.com>
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@ -877,6 +877,42 @@ static void test_queue_chaining(void)
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g_assert_cmpint(data_b.i, ==, data_b.max);
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}
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static void co_check_current_thread(void *opaque)
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{
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QemuThread *main_thread = opaque;
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assert(qemu_thread_is_self(main_thread));
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}
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static void *test_aio_co_enter(void *co)
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{
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/*
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* qemu_get_current_aio_context() should not to be the main thread
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* AioContext, because this is a worker thread that has not taken
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* the BQL. So aio_co_enter will schedule the coroutine in the
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* main thread AioContext.
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*/
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aio_co_enter(qemu_get_aio_context(), co);
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return NULL;
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}
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static void test_worker_thread_co_enter(void)
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{
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QemuThread this_thread, worker_thread;
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Coroutine *co;
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qemu_thread_get_self(&this_thread);
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co = qemu_coroutine_create(co_check_current_thread, &this_thread);
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qemu_thread_create(&worker_thread, "test_acquire_thread",
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test_aio_co_enter,
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co, QEMU_THREAD_JOINABLE);
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/* Test aio_co_enter from a worker thread. */
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qemu_thread_join(&worker_thread);
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g_assert(aio_poll(ctx, true));
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g_assert(!aio_poll(ctx, false));
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}
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/* End of tests. */
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int main(int argc, char **argv)
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@ -903,6 +939,7 @@ int main(int argc, char **argv)
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g_test_add_func("/aio/timer/schedule", test_timer_schedule);
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g_test_add_func("/aio/coroutine/queue-chaining", test_queue_chaining);
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g_test_add_func("/aio/coroutine/worker-thread-co-enter", test_worker_thread_co_enter);
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g_test_add_func("/aio-gsource/flush", test_source_flush);
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g_test_add_func("/aio-gsource/bh/schedule", test_source_bh_schedule);
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