| /* |
| * |
| * Copyright 2015, 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(GPR_CLOCK_REALTIME), &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_CLOCK_REALTIME); |
| gpr_event_cancellable_wait( |
| &t.ev, gpr_time_add(gpr_now(GPR_CLOCK_REALTIME), |
| gpr_time_from_micros(1000000, GPR_TIMESPAN)), |
| &t.cancel); |
| interval = gpr_time_sub(gpr_now(GPR_CLOCK_REALTIME), interval); |
| GPR_ASSERT( |
| gpr_time_cmp(interval, gpr_time_from_micros(500000, GPR_TIMESPAN)) >= 0); |
| GPR_ASSERT( |
| gpr_time_cmp(gpr_time_from_micros(2000000, GPR_TIMESPAN), interval) >= 0); |
| |
| /* Test timeout on cv wait for uncancelled gpr_cancellable */ |
| gpr_mu_lock(&t.mu); |
| interval = gpr_now(GPR_CLOCK_REALTIME); |
| while (!gpr_cv_cancellable_wait( |
| &t.cv, &t.mu, gpr_time_add(gpr_now(GPR_CLOCK_REALTIME), |
| gpr_time_from_micros(1000000, GPR_TIMESPAN)), |
| &t.cancel)) { |
| } |
| interval = gpr_time_sub(gpr_now(GPR_CLOCK_REALTIME), interval); |
| GPR_ASSERT( |
| gpr_time_cmp(interval, gpr_time_from_micros(500000, GPR_TIMESPAN)) >= 0); |
| GPR_ASSERT( |
| gpr_time_cmp(gpr_time_from_micros(2000000, GPR_TIMESPAN), 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_CLOCK_REALTIME), |
| gpr_time_from_micros(1000000, GPR_TIMESPAN))); |
| 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_CLOCK_REALTIME)); |
| GPR_ASSERT(t.n == 0); |
| |
| /* Test timeout on cv wait for cancelled gpr_cancellable */ |
| gpr_mu_lock(&t.mu); |
| interval = gpr_now(GPR_CLOCK_REALTIME); |
| while (!gpr_cv_cancellable_wait( |
| &t.cv, &t.mu, gpr_time_add(gpr_now(GPR_CLOCK_REALTIME), |
| gpr_time_from_micros(1000000, GPR_TIMESPAN)), |
| &t.cancel)) { |
| } |
| interval = gpr_time_sub(gpr_now(GPR_CLOCK_REALTIME), interval); |
| GPR_ASSERT( |
| gpr_time_cmp(gpr_time_from_micros(100000, GPR_TIMESPAN), interval) >= 0); |
| gpr_mu_unlock(&t.mu); |
| |
| /* Test timeout on event wait for cancelled gpr_cancellable */ |
| interval = gpr_now(GPR_CLOCK_REALTIME); |
| gpr_event_cancellable_wait( |
| &t.ev, gpr_time_add(gpr_now(GPR_CLOCK_REALTIME), |
| gpr_time_from_micros(1000000, GPR_TIMESPAN)), |
| &t.cancel); |
| interval = gpr_time_sub(gpr_now(GPR_CLOCK_REALTIME), interval); |
| GPR_ASSERT( |
| gpr_time_cmp(gpr_time_from_micros(100000, GPR_TIMESPAN), 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; |
| } |