AtmoWin/AtmoThread.cpp at master · simdevmon/AtmoWin · GitHub

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/*
* AtmoThread.cpp: Base thread class for all threads inside AtmoWin
*
* See the README.txt file for copyright information and how to reach the author(s).
*
* $Id: 50c9c4b574cf3409b74b6f3b777df23d3fbade7a $
*/

#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <assert.h>

#include "AtmoThread.h"

#if defined(_ATMO_VLC_PLUGIN_)

CThread::CThread(vlc_object_t *pOwner)
{
	m_bTerminated  = ATMO_FALSE;
	vlc_mutex_init( &m_TerminateLock );
	vlc_cond_init( &m_TerminateCond );
	m_pOwner = pOwner;
	m_HasThread = ATMO_FALSE;
}

#else

CThread::CThread(void)
{
	m_bTerminated  = ATMO_FALSE;

	m_hThread = CreateThread(NULL, 0, CThread::ThreadProc ,
		this, CREATE_SUSPENDED, &m_dwThreadID);

	m_hTerminateEvent = CreateEvent(NULL,0,0,NULL);
}

#endif


#if defined(_ATMO_VLC_PLUGIN_)

CThread::~CThread(void)
{
	assert(m_HasThread == ATMO_FALSE);
	vlc_mutex_destroy( &m_TerminateLock );
	vlc_cond_destroy( &m_TerminateCond );
}

#else

CThread::~CThread(void)
{
	CloseHandle(m_hThread);
	CloseHandle(m_hTerminateEvent);
}

#endif

#if defined(_ATMO_VLC_PLUGIN_)

void *CThread::ThreadProc(void *obj)
{
	CThread *pThread = static_cast<CThread*>(obj);

	int canc = vlc_savecancel ();
	pThread->Execute();
	vlc_restorecancel (canc);

	return NULL;
}

#else

DWORD WINAPI CThread::ThreadProc(LPVOID lpParameter)
{
	CThread *pThread = (CThread *)lpParameter;
	if(pThread)
		return pThread->Execute();
	else
		return (DWORD)-1;
}

#endif


DWORD CThread::Execute(void)
{
	/*
	to do implement! override!

	while(!bTerminated) {
	...
	}
	*/
	return 0;
}

void CThread::Terminate(void)
{
	// Set Termination Flag and EventObject!
	// and wait for Termination

#if defined(_ATMO_VLC_PLUGIN_)
	if(m_HasThread != ATMO_FALSE)
	{
		vlc_mutex_lock( &m_TerminateLock );
		m_bTerminated = ATMO_TRUE;
		vlc_cond_signal( &m_TerminateCond  );
		vlc_mutex_unlock( &m_TerminateLock );

		vlc_cancel( m_Thread );
		vlc_join( m_Thread, NULL );
	}
#else
	m_bTerminated = ATMO_TRUE;
	SetEvent(m_hTerminateEvent);
	WaitForSingleObject(m_hThread,INFINITE);
#endif
}

void CThread::Run()
{
	m_bTerminated = ATMO_FALSE;

#if defined(_ATMO_VLC_PLUGIN_)
	if (vlc_clone( &m_Thread, CThread::ThreadProc, this, VLC_THREAD_PRIORITY_LOW))
	{
		m_HasThread = ATMO_FALSE;
		msg_Err( m_pOwner, "cannot launch one of the AtmoLight threads");
	}
	else
	{
		m_HasThread = ATMO_TRUE;;
	}

#else

	ResetEvent(m_hTerminateEvent);
	ResumeThread(m_hThread);

#endif
}

/*
does a sleep if the sleep was interrupted through
the thread kill event return false...
*/
ATMO_BOOL CThread::ThreadSleep(DWORD millisekunden)
{
#if defined(_ATMO_VLC_PLUGIN_)
	ATMO_BOOL temp;
	vlc_mutex_lock( &m_TerminateLock );
	vlc_cond_timedwait(&m_TerminateCond,
		&m_TerminateLock,
		mdate() + (mtime_t)(millisekunden * 1000));
	temp = m_bTerminated;
	vlc_mutex_unlock( &m_TerminateLock );
	return !temp;

#else
	DWORD res = WaitForSingleObject(m_hTerminateEvent,millisekunden);
	return (res == WAIT_TIMEOUT);
#endif
}