54 lines
1.3 KiB
C++
54 lines
1.3 KiB
C++
/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <gtest/gtest.h>
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#include <utils/CountDownLatch.h>
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#include <atomic>
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#include <thread>
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using namespace utils;
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template <typename T> using sptr = std::shared_ptr<T>;
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TEST(CountDownLatchTest, Simple) {
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CountDownLatch send_latch(1);
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CountDownLatch receive_latch(1);
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std::atomic_int sendbuf;
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std::atomic_int receivebuf;
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std::thread t([&]()->int {
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receive_latch.await();
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int v = receivebuf.load();
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EXPECT_EQ(1, v);
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sendbuf.store(v*2);
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send_latch.latch();
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return 0;
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});
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// send an int to the thread
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receivebuf.store(1);
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receive_latch.latch();
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// receive an int back
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send_latch.await();
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EXPECT_EQ(2, sendbuf.load());
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t.join();
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}
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