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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
/* Test of gpr thread support. */
#include <grpc/support/log.h>
#include <grpc/support/sync.h>
#include <grpc/support/thd.h>
#include <grpc/support/time.h>
#include <stdio.h>
#include <stdlib.h>
#include "test/core/util/test_config.h"
#define NUM_THREADS 300
struct test {
gpr_mu mu;
int n;
int is_done;
gpr_cv done_cv;
};
/* A Thread body. Decrement t->n, and if is becomes zero, set t->done. */
static void thd_body(void* v) {
struct test* t = static_cast<struct test*>(v);
gpr_mu_lock(&t->mu);
t->n--;
if (t->n == 0) {
t->is_done = 1;
gpr_cv_signal(&t->done_cv);
}
gpr_mu_unlock(&t->mu);
}
static void thd_body_joinable(void* v) {}
/* Test thread options work as expected */
static void test_options(void) {
gpr_thd_options options = gpr_thd_options_default();
GPR_ASSERT(!gpr_thd_options_is_joinable(&options));
GPR_ASSERT(gpr_thd_options_is_detached(&options));
gpr_thd_options_set_joinable(&options);
GPR_ASSERT(gpr_thd_options_is_joinable(&options));
GPR_ASSERT(!gpr_thd_options_is_detached(&options));
gpr_thd_options_set_detached(&options);
GPR_ASSERT(!gpr_thd_options_is_joinable(&options));
GPR_ASSERT(gpr_thd_options_is_detached(&options));
}
/* Test that we can create a number of threads and wait for them. */
static void test(void) {
int i;
gpr_thd_id thd;
gpr_thd_id thds[NUM_THREADS];
struct test t;
gpr_thd_options options = gpr_thd_options_default();
gpr_mu_init(&t.mu);
gpr_cv_init(&t.done_cv);
t.n = NUM_THREADS;
t.is_done = 0;
for (i = 0; i < NUM_THREADS; i++) {
GPR_ASSERT(gpr_thd_new(&thd, "grpc_thread_test", &thd_body, &t, nullptr));
}
gpr_mu_lock(&t.mu);
while (!t.is_done) {
gpr_cv_wait(&t.done_cv, &t.mu, gpr_inf_future(GPR_CLOCK_REALTIME));
}
gpr_mu_unlock(&t.mu);
GPR_ASSERT(t.n == 0);
gpr_thd_options_set_joinable(&options);
for (i = 0; i < NUM_THREADS; i++) {
GPR_ASSERT(gpr_thd_new(&thds[i], "grpc_joinable_thread_test",
&thd_body_joinable, nullptr, &options));
}
for (i = 0; i < NUM_THREADS; i++) {
gpr_thd_join(thds[i]);
}
}
/* ------------------------------------------------- */
int main(int argc, char* argv[]) {
grpc_test_init(argc, argv);
test_options();
test();
return 0;
}
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