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Fix a situation where some threadpool work items are never executed.

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Fixes #6349
This commit is contained in:
Gunnar Beutner 2014-05-28 15:57:48 +02:00
parent fdc2ef6190
commit 157de9f3bb
2 changed files with 6 additions and 3 deletions
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5
lib/base/threadpool.cpp
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@ -272,8 +272,9 @@ void ThreadPool::ManagerThreadProc(void)
int tthreads = wthreads - alive; int tthreads = wthreads - alive;
/* Make sure there is at least one thread per CPU */ /* Make sure there is at least one thread per CPU */
if (alive + tthreads < std::max(boost::thread::hardware_concurrency(), 4U)) int ncput = std::max(boost::thread::hardware_concurrency() / QUEUECOUNT, 1U);
tthreads = 1 - alive; if (alive + tthreads < ncput)
tthreads = ncput - alive;
/* Don't kill more than 8 threads at once. */ /* Don't kill more than 8 threads at once. */
if (tthreads < -8) if (tthreads < -8)

4
lib/base/threadpool.hpp
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@ -30,6 +30,8 @@
namespace icinga namespace icinga
{ {
#define QUEUECOUNT 4
/** /**
* A thread pool. * A thread pool.
* *
@ -118,7 +120,7 @@ private:
boost::condition_variable m_MgmtCV; boost::condition_variable m_MgmtCV;
bool m_Stopped; bool m_Stopped;
Queue m_Queues[4]; Queue m_Queues[QUEUECOUNT];
void ManagerThreadProc(void); void ManagerThreadProc(void);
}; };