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/*
* Modification History
*
* 2001-January-27 Jason Rohrer
* Created.
*
* 2001-March-4 Jason Rohrer
* Replaced include of <winbase.h> and <windef.h> with <windows.h>
* to fix compile bugs encountered with newer windows compilers.
*
* 2004-March-31 Jason Rohrer
* Added missing call to CloseHandle in destructor.
* Added support for detatched mode.
*
* 2004-April-1 Jason Rohrer
* Fixed a bug in CloseHandle call pointed out by Mycroftxxx.
*
* 2005-January-22 Jason Rohrer
* Added a static sleep function.
*/
#include "minorGems/system/Thread.h"
#include <windows.h>
/**
* Win32-specific implementation of the Thread class member functions.
*
*/
// prototype
/**
* A wrapper for the run method, since windows thread (perhaps) won't take
* a class's member function. Takes a pointer to the Thread to run,
* cast as a void*;
*/
DWORD WINAPI win32ThreadFunction( void * );
Thread::Thread() {
// allocate a handle on the heap
mNativeObjectPointer = (void *)( new HANDLE[1] );
}
Thread::~Thread() {
// get a pointer to the allocated handle
HANDLE *threadPointer = (HANDLE *)mNativeObjectPointer;
// close the handle to ensure that the thread resources are freed
CloseHandle( threadPointer[0] );
// de-allocate the thread handle from the heap
delete [] threadPointer;
}
void Thread::start( char inDetach ) {
mIsDetached = inDetach;
// get a pointer to the allocated handle
HANDLE *threadPointer = (HANDLE *)mNativeObjectPointer;
DWORD threadID;
threadPointer[0] = CreateThread(
(LPSECURITY_ATTRIBUTES)NULL, // no attributes
(DWORD)0, // default stack size
win32ThreadFunction, // function
(LPVOID)this, // function arg
(DWORD)0, // no creation flags (start thread immediately)
&threadID );
}
void Thread::join() {
HANDLE *threadPointer = (HANDLE *)mNativeObjectPointer;
WaitForSingleObject( threadPointer[0], INFINITE );
}
void Thread::staticSleep( unsigned long inTimeInMilliseconds ) {
Sleep( inTimeInMilliseconds );
}
// takes a pointer to a Thread object as the data value
DWORD WINAPI win32ThreadFunction( void *inPtrToThread ) {
Thread *threadToRun = (Thread *)inPtrToThread;
threadToRun->run();
if( threadToRun->isDetatched() ) {
// thread detached, so we must destroy it
delete threadToRun;
}
return 0;
}
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