ThreadCounter.hpp

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* Copyright (C) 2006, Novell, Inc. All rights reserved.
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#ifndef BLOCXX_THREAD_COUNTER_HPP_INCLUDE_GUARD_
#define BLOCXX_THREAD_COUNTER_HPP_INCLUDE_GUARD_
#include "blocxx/BLOCXX_config.h"
#include "blocxx/Types.hpp"
#include "blocxx/NonRecursiveMutex.hpp"
#include "blocxx/Condition.hpp"
#include "blocxx/IntrusiveReference.hpp"
#include "blocxx/IntrusiveCountableBase.hpp"
#include "blocxx/ThreadDoneCallback.hpp"
 
namespace BLOCXX_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 application.
class BLOCXX_COMMON_API ThreadCounter : public IntrusiveCountableBase
{
public:
   ThreadCounter(Int32 maxThreads);
   ~ThreadCounter();
   // Throws TimeoutException in case of timeout
   void incThreadCount(const Timeout& timeout);
   BLOCXX_DEPRECATED void incThreadCount(UInt32 sTimeout, UInt32 usTimeout);
   void decThreadCount();
   Int32 getThreadCount();
   // Throws TimeoutException in case of timeout
   void waitForAll(const Timeout& timeout);
   BLOCXX_DEPRECATED 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 BLOCXX_COMMON_API ThreadCountDecrementer : public ThreadDoneCallback
{
public:
   ThreadCountDecrementer(ThreadCounterRef const& x);
   virtual ~ThreadCountDecrementer();
private:
   virtual void doNotifyThreadDone(Thread *);
 
#ifdef BLOCXX_WIN32
#pragma warning (push)
#pragma warning (disable: 4251)
#endif
 
   ThreadCounterRef m_counter;
 
#ifdef BLOCXX_WIN32
#pragma warning (pop)
#endif
 
   // noncopyable
   ThreadCountDecrementer(ThreadCountDecrementer const&);
   ThreadCountDecrementer& operator=(ThreadCountDecrementer const&);
};
BLOCXX_EXPORT_TEMPLATE(BLOCXX_COMMON_API, IntrusiveReference, ThreadCounter);
 
} // end namespace BLOCXX_NAMESPACE
 
#endif