81 lines
1.8 KiB
C++
81 lines
1.8 KiB
C++
/*
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* Modification History
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*
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* 2001-January-27 Jason Rohrer
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* Created.
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*
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* 2001-March-4 Jason Rohrer
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* Replaced include of <winbase.h> and <windef.h> with <windows.h>
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* to fix compile bugs encountered with newer windows compilers.
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*
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* 2002-October-18 Jason Rohrer
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* Moved common include out of header and into platform-specific cpp files,
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* since MemoryTrack uses a mutex lock.
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*
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* 2002-October-19 Jason Rohrer
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* Changed to use malloc instead of new internally to work with debugMemory.
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* Made use of mNativeObjectPointer a bit cleaner.
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* Fixed a few bugs with new use of mNativeObjectPointer.
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*/
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#include "minorGems/common.h"
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#include "minorGems/system/MutexLock.h"
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#include <windows.h>
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#include <stdlib.h>
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/**
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* Win32-specific implementation of the MutexLock class member functions.
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*/
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MutexLock::MutexLock() {
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// allocate a handle on the heap
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mNativeObjectPointer = malloc( sizeof( HANDLE ) );
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// retrieve handle from the heap
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HANDLE *mutexPointer = (HANDLE *)mNativeObjectPointer;
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// create the mutex
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*mutexPointer = CreateMutex(
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(LPSECURITY_ATTRIBUTES) NULL, // no attributes
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(BOOL) false, // not initially locked
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(LPCTSTR) NULL ); // no name
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}
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MutexLock::~MutexLock() {
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// retrieve handle from the heap
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HANDLE *mutexPointer = (HANDLE *)mNativeObjectPointer;
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// destroy the mutex
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CloseHandle( *mutexPointer );
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// de-allocate the mutex structure from the heap
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free( mutexPointer );
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}
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void MutexLock::lock() {
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// retrieve handle from the heap
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HANDLE *mutexPointer = (HANDLE *)mNativeObjectPointer;
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WaitForSingleObject( *mutexPointer, INFINITE );
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}
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void MutexLock::unlock() {
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// retrieve handle from the heap
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HANDLE *mutexPointer = (HANDLE *)mNativeObjectPointer;
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ReleaseMutex( *mutexPointer );
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}
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