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THRIFT-3233 fix accounting of workers in thread manager

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Client: C++
Patch: Jim King <jim.king@simplivity.com>

This closes #992
This commit is contained in:
Jim King 2016-04-19 15:57:31 -04:00 committed by Jens Geyer
parent a52ea350d8
commit 61b170845f
1 changed files with 15 additions and 16 deletions
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31
lib/cpp/src/thrift/concurrency/ThreadManager.cpp
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@ -213,8 +213,6 @@ public:
*/
void run() {
bool active = false;
bool notifyManager = false;
/**
* Increment worker semaphore and notify manager if worker count reached
* desired max
@ -223,18 +221,20 @@ public:
* since that is what the manager blocks on for worker add/remove
*/
{
Synchronized s(manager_->monitor_);
active = manager_->workerCount_ < manager_->workerMaxCount_;
if (active) {
manager_->workerCount_++;
notifyManager = manager_->workerCount_ == manager_->workerMaxCount_;
bool notifyManager = false;
{
Synchronized s(manager_->monitor_);
active = manager_->workerCount_ < manager_->workerMaxCount_;
if (active) {
manager_->workerCount_++;
notifyManager = manager_->workerCount_ == manager_->workerMaxCount_;
}
}
}
if (notifyManager) {
Synchronized s(manager_->workerMonitor_);
manager_->workerMonitor_.notify();
notifyManager = false;
if (notifyManager) {
Synchronized s(manager_->workerMonitor_);
manager_->workerMonitor_.notify();
}
}
while (active) {
@ -279,10 +279,6 @@ public:
&& manager_->tasks_.size() <= manager_->pendingTaskCountMax_ - 1) {
manager_->maxMonitor_.notify();
}
} else {
idle_ = true;
manager_->workerCount_--;
notifyManager = (manager_->workerCount_ == manager_->workerMaxCount_);
}
}
@ -302,6 +298,9 @@ public:
{
Synchronized s(manager_->workerMonitor_);
manager_->deadWorkers_.insert(this->thread());
idle_ = true;
manager_->workerCount_--;
bool notifyManager = (manager_->workerCount_ == manager_->workerMaxCount_);
if (notifyManager) {
manager_->workerMonitor_.notify();
}