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/*
*
* Copyright 2015 gRPC authors.
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*
* 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
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*
* http://www.apache.org/licenses/LICENSE-2.0
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*
* 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.
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*
*/
/* Test of gpr thread support. */
#include "src/core/lib/gprpp/thd.h"
#include "gtest/gtest.h"
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#include <grpc/support/sync.h>
#include <grpc/support/time.h>
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#include "test/core/util/test_config.h"
#define NUM_THREADS 100
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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) {
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struct test* t = static_cast<struct test*>(v);
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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];
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struct test t;
gpr_mu_init(&t.mu);
gpr_cv_init(&t.done_cv);
t.n = NUM_THREADS;
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t.is_done = 0;
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for (auto& th : thds) {
th = grpc_core::Thread("grpc_thread_body1_test", &thd_body1, &t);
th.Start();
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}
gpr_mu_lock(&t.mu);
while (!t.is_done) {
gpr_cv_wait(&t.done_cv, &t.mu, gpr_inf_future(GPR_CLOCK_REALTIME));
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}
gpr_mu_unlock(&t.mu);
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for (auto& th : thds) {
th.Join();
}
ASSERT_EQ(t.n, 0);
gpr_mu_destroy(&t.mu);
gpr_cv_destroy(&t.done_cv);
}
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];
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for (auto& th : thds) {
bool ok;
th = grpc_core::Thread("grpc_thread_body2_test", &thd_body2, nullptr, &ok);
ASSERT_TRUE(ok);
th.Start();
}
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for (auto& th : thds) {
th.Join();
}
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}
/* ------------------------------------------------- */
TEST(ThdTest, MainTest) {
test1();
test2();
}
int main(int argc, char** argv) {
grpc::testing::TestEnvironment env(&argc, argv);
::testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}