30f4e9d47a
Summary: Futex test execution time was too long Test Plan: manual Reviewers: dgleich Reviewed By: dgleich Subscribers: pullbot, dgleich, buda Differential Revision: https://phabricator.memgraph.io/D56
47 lines
973 B
C++
47 lines
973 B
C++
#include <chrono>
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#include <mutex>
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#include <random>
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#include <thread>
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#include "threading/sync/futex.hpp"
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#include "utils/assert.hpp"
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Futex futex;
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int x = 0;
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/**
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* @param thread id
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*/
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void test_lock(int) {
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std::random_device rd;
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std::mt19937 gen(rd());
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std::uniform_int_distribution<> dis(0, 1000);
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// TODO: create long running test
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for (int i = 0; i < 5; ++i) {
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{
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std::unique_lock<Futex> guard(futex);
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x++;
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std::this_thread::sleep_for(std::chrono::milliseconds(dis(gen)));
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permanent_assert(x == 1,
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"Other thread shouldn't be able to "
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"change the value of x");
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x--;
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}
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std::this_thread::sleep_for(std::chrono::milliseconds(dis(gen)));
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}
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}
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int main(void) {
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constexpr int N = 16;
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std::vector<std::thread> threads;
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for (int i = 0; i < N; ++i) threads.push_back(std::thread(test_lock, i));
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for (auto& thread : threads) {
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thread.join();
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}
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return 0;
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}
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