source: Sophya/trunk/Poubelle/archediab.old/archediab.sources/c/timer.c@ 2012

#include <manip.h>
#include "montimer.h"


#ifndef powerc
//$$#include <A4Stuff.h>
#endif




//Globals


#ifndef powerc
void montimer(void);
#else
void montimer(TMInfoPtr recPtr);
#endif

TMInfo                          myTMInfo;


TMInfoPtr setuptimer(long delai,void (*execute)(void*),void * mastructure)
{
        TMInfoPtr       myTMInfopt=malloc(sizeof(TMInfo));
        
                //This statement will work with 68K or PPC 
        
        myTMInfopt->atmTask.tmAddr =  NewTimerProc(montimer);
        myTMInfopt->atmTask.qLink = NULL;
        myTMInfopt->atmTask.qType = 0;
        myTMInfopt->atmTask.tmCount = 0L;
        myTMInfopt->atmTask.tmWakeUp = 0L;
        myTMInfopt->atmTask.tmReserved = 0L;
        myTMInfopt->mastructure = mastructure;
        myTMInfopt->delai=delai;
        myTMInfopt->execute=execute;

        
#ifdef  powerc 
                //You don't need to do anything.  We will ignore the tmRefCon field.
#else
                        //Store A4 into the TMInfo struct
                        //This is the best way in this situation
//$$    myTMInfopt->tmRefCon = GetCurrentA4();
        myTMInfopt->A5=SetCurrentA5();
#endif //powerc
        
        InsXTime((QElemPtr)myTMInfopt);
        PrimeTime((QElemPtr)myTMInfopt, delai);
return(myTMInfopt);
}



void supprimetimer(TMInfoPtr  myTMInfopt)
{
if(myTMInfopt)
        {
        TimerUPP tt=myTMInfopt->atmTask.tmAddr;
        DisposeRoutineDescriptor(tt);
        RmvTime((QElemPtr)myTMInfopt);
        free(myTMInfopt);
        myTMInfopt=0;
        }
}



void stoptimer(TMInfoPtr  myTMInfopt)
{
if(myTMInfopt)  myTMInfopt->delai=0;
}

void redemarretimer(TMInfoPtr  myTMInfopt,long delai)
{
if(myTMInfopt)
        {
        myTMInfopt->delai=delai;
        PrimeTime((QElemPtr)myTMInfopt,myTMInfopt->delai);
        }
}


/*-----------------   prog interruption   -----------------------*/


#ifndef powerc

        //The 68K resource needs this glue to move the TMInfo pointer from A1 to A0 where 
        //the Toolbox put it.  N.B. This is very different from the pascal glue provided in 
        //IM 6 TimeManager chapter, but then Pascal is very different from C.
        
asm  inline TMInfoPtr GetTMInfo( void )
{
        move.l A1, A0;  
        rts;
}


        //This function is being called at interrupt time so we can't move memory.  All we can
        // do is to set a global flag which our Drawing proc will detect.
void montimer(void)
{
                //Get a pointer to our TMInfo so we can prime it again
        TMInfoPtr       recPtr = GetTMInfo();
        long            myDelay = 1000; //one sec.
        
                //Sets A4 to the value in tmRefCon which was set to point to A4 at non-interrupt time.
//$$    long            oldA4 = SetA4(recPtr->tmRefCon);
        long            oldA5 =  SetA5(recPtr->A5);                     /*A5 du programme*/

        (recPtr->execute)(recPtr->mastructure);
        PrimeTime((QElemPtr)recPtr,recPtr->delai);
        
                //Restore the register state
//$$    (void)SetA4(oldA4);
        SetA5(oldA5);                                   /*restore A5*/          

}
        


#else

        //The PowerPC version of a TimerUPP has the TMInfo pointer as a parameter.  Whew! No glue.
        //In fact, no need to set up global space either!
void montimer(TMInfoPtr recPtr)
{
        
        (recPtr->execute)(recPtr->mastructure);
        if(recPtr->delai) PrimeTime((QElemPtr)recPtr,recPtr->delai);

}
#endif //powerc