Github user phrocker commented on a diff in the pull request:
https://github.com/apache/nifi-minifi-cpp/pull/117#discussion_r128638003
--- Diff: libminifi/include/utils/ThreadPool.h ---
@@ -246,15 +349,67 @@ void ThreadPool<T>::startWorkers() {
template<typename T>
void ThreadPool<T>::run_tasks() {
auto waitperiod = std::chrono::milliseconds(1) * 100;
+ uint64_t wait_decay_ = 0;
while (running_.load()) {
+ // if we are spinning, perform a wait. If something changes in the
worker such that the timeslice has changed, we will pick that information up.
Note that it's possible
+ // we could starve for processing time if all workers are waiting. In
the event that the number of workers far exceeds the number of threads, threads
will spin and potentially
+ // wait until they arrive at a task that can be run. In this case we
reset the wait_decay and attempt to pick up a new task. This means that threads
that recently ran should
+ // be more likely to run. This is intentional.
+ if (wait_decay_ > 1000) {
+ std::this_thread::sleep_for(std::chrono::nanoseconds(wait_decay_));
--- End diff --
@benqiu2016 thanks. I thought I took care of that.Thanks!
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