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80 lines
1.8 KiB
C++
80 lines
1.8 KiB
C++
////////////////////////////////////////
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// Mutex.h
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//
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// Purpose:
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// 1. Declair the CMutex class that encapsulates the functionality of a
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// mutually-exclusive device.
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//
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// Revisions:
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// 07/10/2001 Created
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//
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#ifndef BASE_LINUX_MUTEX_H
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#define BASE_LINUX_MUTEX_H
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#if !defined(_REENTRANT)
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# pragma message( "Excluding Base::CMutex - requires multi-threaded compile. (_REENTRANT)" )
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#else
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#include "Platform.h"
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#ifdef EXTERNAL_DISTRO
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namespace NAMESPACE
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{
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#endif
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namespace Base
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{
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////////////////////////////////////////
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// Class:
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// CMutex
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//
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// Purpose:
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// Encapsulates the functionality of a mutually-exclusive device.
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// This class is valuable for protecting against race conditions
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// within threaded applications. The CMutex class can be used to
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// only allow a single thread to run within a specified code
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// segment at a time.
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//
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// Public Methods:
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// Lock() : Locks the mutex. If the mutex is already locked, the
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// operating system will block the calling thread until another
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// thread has unlocked the mutex.
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// Unlock() : Unlocks the mutex.
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//
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class CMutex
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{
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public:
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CMutex();
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~CMutex();
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void Lock();
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void Unlock();
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private:
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pthread_mutex_t mMutex;
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bool mInitialized;
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};
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inline void CMutex::Lock(void)
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{
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if (mInitialized)
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pthread_mutex_lock(&mMutex);
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}
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inline void CMutex::Unlock(void)
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{
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if (mInitialized)
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pthread_mutex_unlock(&mMutex);
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}
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}
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#ifdef EXTERNAL_DISTRO
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};
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#endif
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#endif // #if defined(_MT)
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#endif // BASE_LINUX_MUTEX_H
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