51 lines
794 B
C++
51 lines
794 B
C++
#include <condition_variable>
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#include <mutex>
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#include <thread>
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std::mutex mutex;
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std::condition_variable cond;
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void *
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thread3(void *input)
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{
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std::unique_lock<std::mutex> lock(mutex);
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cond.notify_all(); // Set break point at this line.
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return NULL;
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}
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void *
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thread2(void *input)
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{
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std::unique_lock<std::mutex> lock(mutex);
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cond.notify_all();
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cond.wait(lock);
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return NULL;
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}
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void *
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thread1(void *input)
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{
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std::thread thread_2(thread2, nullptr);
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thread_2.join();
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return NULL;
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}
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int main()
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{
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std::unique_lock<std::mutex> lock(mutex);
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std::thread thread_1(thread1, nullptr);
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cond.wait(lock);
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std::thread thread_3(thread3, nullptr);
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cond.wait(lock);
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lock.unlock();
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thread_1.join();
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thread_3.join();
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return 0;
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}
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