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threads.h

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// Module:  Log4CPLUS
// File:    threads.h
// Created: 6/2001
// Author:  Tad E. Smith
//
//
// Copyright (C) Tad E. Smith  All rights reserved.
//
// This software is published under the terms of the Apache Software
// License version 1.1, a copy of which has been included with this
// distribution in the LICENSE.APL file.
//

#ifndef _LOG4CPLUS_THREADS_HEADER_
#define _LOG4CPLUS_THREADS_HEADER_

#include <log4cplus/config.h>
#include <log4cplus/tstring.h>
#include <log4cplus/helpers/sleep.h>
#include <log4cplus/helpers/pointer.h>
#include <memory>


namespace log4cplus {
    namespace thread {

        class LOG4CPLUS_EXPORT Guard {
        public:
            Guard(LOG4CPLUS_MUTEX_PTR_DECLARE mutex) {
                LOG4CPLUS_MUTEX_ASSIGN( _mutex, mutex );
                LOG4CPLUS_MUTEX_LOCK( _mutex );
            }

            ~Guard() { LOG4CPLUS_MUTEX_UNLOCK( _mutex ); }

        private:
            LOG4CPLUS_MUTEX_PTR_DECLARE _mutex;
 
            // disable copy
            Guard(const Guard&);
            Guard& operator=(const Guard&);
        };

#ifndef LOG4CPLUS_SINGLE_THREADED
#ifdef LOG4CPLUS_USE_PTHREADS
        void* threadStartFunc(void*);
#elif defined(LOG4CPLUS_USE_WIN32_THREADS)
        DWORD WINAPI threadStartFunc(LPVOID arg);
#endif

        LOG4CPLUS_EXPORT void yield();
        LOG4CPLUS_EXPORT log4cplus::tstring getCurrentThreadName();

        class LOG4CPLUS_EXPORT AbstractThread : public log4cplus::helpers::SharedObject {
        public:
            AbstractThread();
            bool isRunning() { return running; }
            LOG4CPLUS_THREAD_KEY_TYPE getThreadId() { return threadId; }
            virtual void start();

        protected:
            // Force objects to be constructed on the heap
            virtual ~AbstractThread();
            virtual void run() = 0;

        private:
            bool running;
            LOG4CPLUS_THREAD_KEY_TYPE threadId;

            // Disallow copying of instances of this class
            AbstractThread(const AbstractThread&);
            AbstractThread& operator=(const AbstractThread&);

        // Friends
#ifdef LOG4CPLUS_USE_PTHREADS
        friend void* threadStartFunc(void*);
#elif defined(LOG4CPLUS_USE_WIN32_THREADS)
        friend DWORD WINAPI threadStartFunc(LPVOID arg);
#endif

        };
#endif // LOG4CPLUS_SINGLE_THREADED

    } // end namespace thread 
} // end namespace log4cplus 


#endif // _LOG4CPLUS_THREADS_HEADER_

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