ThreadCounter.hpp

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00001 /*******************************************************************************
00002 * Copyright (C) 2004 Vintela, Inc. All rights reserved.
00003 * Copyright (C) 2005 Novell, Inc. All rights reserved.
00004 *
00005 * Redistribution and use in source and binary forms, with or without
00006 * modification, are permitted provided that the following conditions are met:
00007 *
00008 *  - Redistributions of source code must retain the above copyright notice,
00009 *    this list of conditions and the following disclaimer.
00010 *
00011 *  - Redistributions in binary form must reproduce the above copyright notice,
00012 *    this list of conditions and the following disclaimer in the documentation
00013 *    and/or other materials provided with the distribution.
00014 *
00015 *  - Neither the name of Vintela, Inc., Novell, Inc., nor the names of its
00016 *    contributors may be used to endorse or promote products derived from this
00017 *    software without specific prior written permission.
00018 *
00019 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
00020 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00021 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
00022 * ARE DISCLAIMED. IN NO EVENT SHALL Vintela, Inc., Novell, Inc., OR THE 
00023 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
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00025 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 
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00030 *******************************************************************************/
00031 
00032 
00037 #ifndef BLOCXX_THREAD_COUNTER_HPP_INCLUDE_GUARD_
00038 #define BLOCXX_THREAD_COUNTER_HPP_INCLUDE_GUARD_
00039 #include "blocxx/BLOCXX_config.h"
00040 #include "blocxx/Types.hpp"
00041 #include "blocxx/NonRecursiveMutex.hpp"
00042 #include "blocxx/Condition.hpp"
00043 #include "blocxx/IntrusiveReference.hpp"
00044 #include "blocxx/IntrusiveCountableBase.hpp"
00045 #include "blocxx/ThreadDoneCallback.hpp"
00046 
00047 namespace BLOCXX_NAMESPACE
00048 {
00049 
00050 // Note: Do not inline any functions in these classes, the code must
00051 // be contained in the main library, if a loadable library contains any,
00052 // it will cause a race-condition that may segfault the cimom.
00053 class BLOCXX_COMMON_API ThreadCounter : public IntrusiveCountableBase
00054 {
00055 public:
00056    ThreadCounter(Int32 maxThreads);
00057    ~ThreadCounter();
00058    // Throws TimeoutException in case of timeout
00059    void incThreadCount(UInt32 sTimeout, UInt32 usTimeout);
00060    void decThreadCount();
00061    Int32 getThreadCount();
00062    // Throws TimeoutException in case of timeout
00063    void waitForAll(UInt32 sTimeout, UInt32 usTimeout);
00064    void setMax(Int32 maxThreads);
00065 private:
00066    Int32 m_maxThreads;
00067    Int32 m_runCount;
00068    NonRecursiveMutex m_runCountGuard;
00069    Condition m_runCountCondition;
00070    // noncopyable
00071    ThreadCounter(ThreadCounter const&);
00072    ThreadCounter& operator=(ThreadCounter const&);
00073 };
00074 
00075 class BLOCXX_COMMON_API ThreadCountDecrementer : public ThreadDoneCallback
00076 {
00077 public:
00078    ThreadCountDecrementer(ThreadCounterRef const& x);
00079    virtual ~ThreadCountDecrementer();
00080 private:
00081    virtual void doNotifyThreadDone(Thread *);
00082 
00083 #ifdef BLOCXX_WIN32
00084 #pragma warning (push)
00085 #pragma warning (disable: 4251)
00086 #endif
00087 
00088    ThreadCounterRef m_counter;
00089 
00090 #ifdef BLOCXX_WIN32
00091 #pragma warning (pop)
00092 #endif
00093 
00094    // noncopyable
00095    ThreadCountDecrementer(ThreadCountDecrementer const&);
00096    ThreadCountDecrementer& operator=(ThreadCountDecrementer const&);
00097 };
00098 BLOCXX_EXPORT_TEMPLATE(BLOCXX_COMMON_API, IntrusiveReference, ThreadCounter);
00099 
00100 } // end namespace BLOCXX_NAMESPACE
00101 
00102 #endif

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