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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 "src/core/lib/gprpp/thd.h"
#include <stdio.h>
#include <stdlib.h>
#include <grpc/support/log.h>
#include <grpc/support/sync.h>
#include <grpc/support/time.h>
#include "test/core/util/test_config.h"
#define NUM_THREADS 100
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_body1(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);
}
/* Test that we can create a number of threads, wait for them, and join them. */
static void test1(void) {
grpc_core::Thread thds[NUM_THREADS];
struct test t;
gpr_mu_init(&t.mu);
gpr_cv_init(&t.done_cv);
t.n = NUM_THREADS;
t.is_done = 0;
for (auto& th : thds) {
th = grpc_core::Thread("grpc_thread_body1_test", &thd_body1, &t);
th.Start();
}
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);
for (auto& th : thds) {
th.Join();
}
GPR_ASSERT(t.n == 0);
}
static void thd_body2(void* v) {}
/* Test that we can create a number of threads and join them. */
static void test2(void) {
grpc_core::Thread thds[NUM_THREADS];
for (auto& th : thds) {
bool ok;
th = grpc_core::Thread("grpc_thread_body2_test", &thd_body2, nullptr, &ok);
GPR_ASSERT(ok);
th.Start();
}
for (auto& th : thds) {
th.Join();
}
}
/* ------------------------------------------------- */
int main(int argc, char* argv[]) {
grpc_test_init(argc, argv);
test1();
test2();
return 0;
}
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