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Diffstat (limited to 'test/core/support/cancellable_test.c')
| -rw-r--r-- | test/core/support/cancellable_test.c | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/test/core/support/cancellable_test.c b/test/core/support/cancellable_test.c new file mode 100644 index 0000000000..e90c999921 --- /dev/null +++ b/test/core/support/cancellable_test.c @@ -0,0 +1,160 @@ +/* + * + * Copyright 2014, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +/* Test of gpr_cancellable. */ + +#include <stdio.h> +#include <stdlib.h> +#include <grpc/support/log.h> +#include <grpc/support/sync.h> +#include <grpc/support/thd.h> +#include <grpc/support/time.h> +#include "test/core/util/test_config.h" + +struct test { + gpr_mu mu; + gpr_cv cv; + gpr_event ev; + gpr_event done; + gpr_cancellable cancel; + int n; +}; + +/* A thread body. Wait until t->cancel is cancelledm then + decrement t->n. If t->n becomes 0, set t->done. */ +static void thd_body(void *v) { + struct test *t = v; + gpr_mu_lock(&t->mu); + while (!gpr_cv_cancellable_wait(&t->cv, &t->mu, gpr_inf_future, &t->cancel)) { + } + t->n--; + if (t->n == 0) { + gpr_event_set(&t->done, (void *)1); + } + gpr_mu_unlock(&t->mu); +} + +static void test(void) { + int i; + gpr_thd_id thd; + struct test t; + int n = 1; + gpr_timespec interval; + + gpr_mu_init(&t.mu); + gpr_cv_init(&t.cv); + gpr_event_init(&t.ev); + gpr_event_init(&t.done); + gpr_cancellable_init(&t.cancel); + + /* A gpr_cancellable starts not cancelled. */ + GPR_ASSERT(!gpr_cancellable_is_cancelled(&t.cancel)); + + /* Test timeout on event wait for uncancelled gpr_cancellable */ + interval = gpr_now(); + gpr_event_cancellable_wait( + &t.ev, gpr_time_add(gpr_now(), gpr_time_from_micros(1000000)), &t.cancel); + interval = gpr_time_sub(gpr_now(), interval); + GPR_ASSERT(gpr_time_cmp(interval, gpr_time_from_micros(500000)) >= 0); + GPR_ASSERT(gpr_time_cmp(gpr_time_from_micros(2000000), interval) >= 0); + + /* Test timeout on cv wait for uncancelled gpr_cancellable */ + gpr_mu_lock(&t.mu); + interval = gpr_now(); + while (!gpr_cv_cancellable_wait( + &t.cv, &t.mu, + gpr_time_add(gpr_now(), gpr_time_from_micros(1000000)), + &t.cancel)) { + } + interval = gpr_time_sub(gpr_now(), interval); + GPR_ASSERT(gpr_time_cmp(interval, gpr_time_from_micros(500000)) >= 0); + GPR_ASSERT(gpr_time_cmp(gpr_time_from_micros(2000000), interval) >= 0); + gpr_mu_unlock(&t.mu); + + /* Create some threads. They all wait until cancelled; the last to finish + sets t.done. */ + t.n = n; + for (i = 0; i != n; i++) { + GPR_ASSERT(gpr_thd_new(&thd, &thd_body, &t, NULL)); + } + /* Check that t.cancel still is not cancelled. */ + GPR_ASSERT(!gpr_cancellable_is_cancelled(&t.cancel)); + + /* Wait a second, and check that no threads have finished waiting. */ + gpr_mu_lock(&t.mu); + gpr_cv_wait(&t.cv, &t.mu, + gpr_time_add(gpr_now(), gpr_time_from_micros(1000000))); + GPR_ASSERT(t.n == n); + gpr_mu_unlock(&t.mu); + + /* Check that t.cancel still is not cancelled, but when + cancelled it retports that it is cacncelled. */ + GPR_ASSERT(!gpr_cancellable_is_cancelled(&t.cancel)); + gpr_cancellable_cancel(&t.cancel); + GPR_ASSERT(gpr_cancellable_is_cancelled(&t.cancel)); + + /* Wait for threads to finish. */ + gpr_event_wait(&t.done, gpr_inf_future); + GPR_ASSERT(t.n == 0); + + /* Test timeout on cv wait for cancelled gpr_cancellable */ + gpr_mu_lock(&t.mu); + interval = gpr_now(); + while (!gpr_cv_cancellable_wait( + &t.cv, &t.mu, + gpr_time_add(gpr_now(), gpr_time_from_micros(1000000)), + &t.cancel)) { + } + interval = gpr_time_sub(gpr_now(), interval); + GPR_ASSERT(gpr_time_cmp(gpr_time_from_micros(100000), interval) >= 0); + gpr_mu_unlock(&t.mu); + + /* Test timeout on event wait for cancelled gpr_cancellable */ + interval = gpr_now(); + gpr_event_cancellable_wait( + &t.ev, gpr_time_add(gpr_now(), gpr_time_from_micros(1000000)), &t.cancel); + interval = gpr_time_sub(gpr_now(), interval); + GPR_ASSERT(gpr_time_cmp(gpr_time_from_micros(100000), interval) >= 0); + + gpr_mu_destroy(&t.mu); + gpr_cv_destroy(&t.cv); + gpr_cancellable_destroy(&t.cancel); +} + +/* ------------------------------------------------- */ + +int main(int argc, char *argv[]) { + grpc_test_init(argc, argv); + test(); + return 0; +} |