uitimer.c

嵌入工linux开发的源码

/**************************************************************
        INCLUDE FILE
***************************************************************/


    #include <pr2k.h>
    #include <uiwnd.h>

#include <uiTimer.h>

extern struct thread *CurrentThread;

TGuiTimer *PdaTimerTable=NULL;

DLL_EXP(HNDL) guiTimer_Allocate(void) 
{
	TGuiTimer *pTimer;

	guiEnterWCS();
	//allocate a timer;
	//pTimer=(TGuiTimer *)kernelMalloc(sizeof(TGuiTimer));
	pTimer=(TGuiTimer *)ap_malloc(sizeof(TGuiTimer));
	if(pTimer!=NULL)
	{
		//initialize timer
		pTimer->nEnabled=0;
		pTimer->dwTickMax=0;
		pTimer->dwTickRemain=0;

		pTimer->pMsgQueue=NULL;
		pTimer->iOwnerThreadID=CurrentThread->tid;

		pTimer->pPrev=NULL;
		pTimer->pNext=PdaTimerTable;
		if(PdaTimerTable!=NULL)
		{
			PdaTimerTable->pPrev=pTimer;
		}
		PdaTimerTable=pTimer;
	}
	guiExitWCS();

	return (HNDL)pTimer;
}

DLL_EXP(HNDL) guiTimer_Start(HNDL hTimer, DWORD initTick, DWORD cycleTick, HNDL hWin) 
{
	TGuiTimer *pTmr;
	
	pTmr=(TGuiTimer *)hTimer;
	
	if(pTmr==NULL)
	{
		pTmr=(TGuiTimer *)guiTimer_Allocate();
	}

	guiEnterWCS();
	
	if(pTmr!=NULL)
	{
		pTmr->dwTickRemain=initTick;
		pTmr->dwTickMax=cycleTick;
		pTmr->pMsgQueue=((TWindow *)hWin)->messageQueue;
		pTmr->nEnabled=1;
	}
	guiExitWCS();

	return hTimer;
}

DLL_EXP(void) guiTimer_Free(HNDL hTimer) 
{
	TGuiTimer *pTmr;
	
	pTmr=(TGuiTimer *)hTimer;
	
	guiEnterWCS();

	_guiTimer_Delete(pTmr);

	guiExitWCS();
}

DLL_EXP(DWORD) guiTimer_GetValue(HNDL hTimer) 
{
	TGuiTimer *pTmr;
	DWORD dwTicks=0;
	
	pTmr=(TGuiTimer *)hTimer;

	guiEnterWCS();

	if(pTmr!=NULL)
	{
		dwTicks=pTmr->dwTickRemain;
	}

	guiExitWCS();

	return dwTicks;
}

DLL_EXP(int) guiTimer_Stop(HNDL hTimer) 
{
	TGuiTimer *pTmr;
	
	pTmr=(TGuiTimer *)hTimer;
	
	guiEnterWCS();

	if(pTmr!=NULL&&pTmr->nEnabled!=0)
	{
		pTmr->nEnabled=0;
		guiExitWCS();
		return 0;
	}

	guiExitWCS();
	return -1;
}

DLL_EXP(void) pda_timerCount(void) 
{
	TGuiTimer *pTimer=PdaTimerTable;
	TGuiMessage struMessage;

	while(pTimer!=NULL)
	{
		if(pTimer->nEnabled==1)
		{
			if(pTimer->dwTickRemain==0)
			{
				struMessage.handle=(HNDL)pTimer;
				struMessage.messageType=TIMER_TIMEOUT;
				_guiEnqueue(pTimer->pMsgQueue,&struMessage);
				
				if(pTimer->dwTickMax!=0)
				{
					pTimer->dwTickRemain=pTimer->dwTickMax;
				}
				else
				{
	//				sc_logString("timer is stop",TO_MONITOR);
					pTimer->nEnabled=0;
				}
			}
			else
			{
				pTimer->dwTickRemain--;
			}
		}
		pTimer=pTimer->pNext;
	}
}


DLL_EXP(int) guiTimer_Restart(HNDL hTimer, DWORD initTick, DWORD cycleTick) 
{
	TGuiTimer *pTmr;
	
	pTmr=(TGuiTimer *)hTimer;
	
	if(pTmr==NULL)
	{
		return -1;
	}

	guiEnterWCS();

	pTmr->dwTickRemain=initTick;
	pTmr->dwTickMax=cycleTick;
	pTmr->nEnabled=1;

	guiExitWCS();

	return 0;
}

DLL_EXP(int) guiTimer_IsRun(HNDL hTimer)
{
	TGuiTimer *pTmr;
	
	pTmr=(TGuiTimer *)hTimer;
	
	if(pTmr==NULL)
	{
		return -1;
	}
	return (int)pTmr->nEnabled;
}


// internal function		
void _guiTimer_Delete(TGuiTimer * tmpPtr) 
{
	TGuiTimer *pTimer=PdaTimerTable;

	if(!pTimer)
	{
		return;
	}
	if(pTimer->pPrev!=NULL)
	{
		pTimer->pPrev->pNext=pTimer->pNext;
	} 
	else
	{
		PdaTimerTable=pTimer->pNext;
	}

	if(pTimer->pNext!=NULL)
	{
		pTimer->pNext->pPrev=pTimer->pPrev;
	}
	
	//kernelFree(pTimer);
	ap_free(pTimer);
}