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common/thread_worker: Add wait for requests method

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This commit is contained in:
ReinUsesLisp 2021-03-22 21:00:48 -03:00
parent 5edc96f4a4
commit f28dd32275
2 changed files with 11 additions and 0 deletions
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9
src/common/thread_worker.cpp
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@ -29,6 +29,10 @@ ThreadWorker::ThreadWorker(std::size_t num_workers, const std::string& name) {
} }
task = std::move(requests.front()); task = std::move(requests.front());
requests.pop(); requests.pop();
if (requests.empty()) {
wait_condition.notify_one();
}
} }
task(); task();
@ -55,4 +59,9 @@ void ThreadWorker::QueueWork(std::function<void()>&& work) {
condition.notify_one(); condition.notify_one();
} }
void ThreadWorker::WaitForRequests() {
std::unique_lock lock{queue_mutex};
wait_condition.wait(lock, [this] { return stop || requests.empty(); });
}
} // namespace Common } // namespace Common

2
src/common/thread_worker.h
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@ -18,12 +18,14 @@ public:
explicit ThreadWorker(std::size_t num_workers, const std::string& name); explicit ThreadWorker(std::size_t num_workers, const std::string& name);
~ThreadWorker(); ~ThreadWorker();
void QueueWork(std::function<void()>&& work); void QueueWork(std::function<void()>&& work);
void WaitForRequests();
private: private:
std::vector<std::thread> threads; std::vector<std::thread> threads;
std::queue<std::function<void()>> requests; std::queue<std::function<void()>> requests;
std::mutex queue_mutex; std::mutex queue_mutex;
std::condition_variable condition; std::condition_variable condition;
std::condition_variable wait_condition;
std::atomic_bool stop{}; std::atomic_bool stop{};
}; };