OW_ThreadCounter.hpp

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#ifndef OW_THREAD_COUNTER_HPP_INCLUDE_GUARD_
#define OW_THREAD_COUNTER_HPP_INCLUDE_GUARD_
#include "OW_config.h"
#include "OW_Types.hpp"
#include "OW_NonRecursiveMutex.hpp"
#include "OW_Condition.hpp"
#include "OW_IntrusiveReference.hpp"
#include "OW_IntrusiveCountableBase.hpp"
#include "OW_ThreadDoneCallback.hpp"

namespace OW_NAMESPACE
{

// Note: Do not inline any functions in these classes, the code must
// be contained in the main library, if a loadable library contains any,
// it will cause a race-condition that may segfault the cimom.
class OW_COMMON_API ThreadCounter : public IntrusiveCountableBase
{
public:
   ThreadCounter(Int32 maxThreads);
   ~ThreadCounter();
   // Throws TimeoutException in case of timeout
   void incThreadCount(UInt32 sTimeout, UInt32 usTimeout);
   void decThreadCount();
   Int32 getThreadCount();
   // Throws TimeoutException in case of timeout
   void waitForAll(UInt32 sTimeout, UInt32 usTimeout);
   void setMax(Int32 maxThreads);
private:
   Int32 m_maxThreads;
   Int32 m_runCount;
   NonRecursiveMutex m_runCountGuard;
   Condition m_runCountCondition;
   // noncopyable
   ThreadCounter(ThreadCounter const&);
   ThreadCounter& operator=(ThreadCounter const&);
};

class OW_COMMON_API ThreadCountDecrementer : public ThreadDoneCallback
{
public:
   ThreadCountDecrementer(ThreadCounterRef const& x);
   virtual ~ThreadCountDecrementer();
private:
   virtual void doNotifyThreadDone(Thread *);

#ifdef OW_WIN32
#pragma warning (push)
#pragma warning (disable: 4251)
#endif

   ThreadCounterRef m_counter;

#ifdef OW_WIN32
#pragma warning (pop)
#endif

   // noncopyable
   ThreadCountDecrementer(ThreadCountDecrementer const&);
   ThreadCountDecrementer& operator=(ThreadCountDecrementer const&);
};
OW_EXPORT_TEMPLATE(OW_COMMON_API, IntrusiveReference, ThreadCounter);

} // end namespace OW_NAMESPACE

#endif

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