49 lines
1.2 KiB
C++
49 lines
1.2 KiB
C++
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#include <iostream>
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#include <thread>
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#include <condition_variable>
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#include <chrono>
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#include <mutex>
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#include <atomic>
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#include "unity.h"
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#if __GTHREADS && __GTHREADS_CXX0X
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std::condition_variable cv;
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std::mutex cv_m;
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std::atomic<int> i{0};
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static void waits(int idx, int timeout_ms)
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{
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std::unique_lock<std::mutex> lk(cv_m);
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auto now = std::chrono::system_clock::now();
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if(cv.wait_until(lk, now + std::chrono::milliseconds(timeout_ms), [](){return i == 1;}))
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std::cout << "Thread " << idx << " finished waiting. i == " << i << '\n';
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else
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std::cout << "Thread " << idx << " timed out. i == " << i << '\n';
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}
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static void signals(int signal_ms)
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{
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std::this_thread::sleep_for(std::chrono::milliseconds(signal_ms));
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std::cout << "Notifying...\n";
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cv.notify_all();
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std::this_thread::sleep_for(std::chrono::milliseconds(signal_ms));
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i = 1;
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std::cout << "Notifying again...\n";
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cv.notify_all();
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}
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TEST_CASE("C++ condition_variable", "[std::condition_variable]")
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{
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i = 0;
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std::thread t1(waits, 1, 100), t2(waits, 2, 800), t3(signals, 200);
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t1.join();
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t2.join();
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t3.join();
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std::cout << "All threads joined\n";
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}
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#endif
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