arpadboda commented on a change in pull request #746: MINIFICPP-1185 - Remove
moodycamel::concurrentqueue from threadpool
URL: https://github.com/apache/nifi-minifi-cpp/pull/746#discussion_r396716663
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File path: libminifi/src/utils/ThreadPool.cpp
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@@ -64,8 +64,10 @@ void ThreadPool<T>::run_tasks(std::shared_ptr<WorkerThread>
thread) {
}
}
} else {
- std::unique_lock<std::mutex> lock(worker_queue_mutex_);
- tasks_available_.wait(lock);
+ // This means that the threadpool is running, but the ConcurrentQueue is
stopped -> shouldn't happen
+ if (running_.load()) {
+ std::this_thread::sleep_for(std::chrono::milliseconds(0));
Review comment:
Meant to sleep for 1 msec, corrected that.
In case this somehow occurs in a transient state (during startup or
shutdown), this prevent the worker threads to busy wait (dequeue fails
immediately and the workers would retry without sleep).
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