35 lines
613 B
C++
35 lines
613 B
C++
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#include <thread>
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#include "baz.h"
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std::condition_variable cv;
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std::mutex mutex;
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int bar(int i) {
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int j = i * i;
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return j;
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}
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int foo(int i) { return bar(i); }
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void compute_pow(int &n) {
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std::unique_lock<std::mutex> lock(mutex);
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n = foo(n);
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lock.unlock();
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cv.notify_one(); // waiting thread is notified with n == 42 * 42, cv.wait
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// returns
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}
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void call_and_wait(int &n) { baz(n, mutex, cv); }
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int main() {
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int n = 42;
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std::thread thread_1(call_and_wait, std::ref(n));
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std::thread thread_2(compute_pow, std::ref(n));
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thread_1.join();
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thread_2.join();
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return 0;
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}
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