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/* Variables globales */
typedef struct Mon_Signal_ {
int Type ;
double NextCall ;
double Interval ;
double IntervalOrigin ;
void *fct ;
void *data ;
} Mon_Signal ;
static MonSignal Signaux[2] ;
static int NSignaux = 0 ;
/*
* U p d a t e s _ N e x t C a l l
*
*/
static void Updates_NextCall ( void )
{
int i, n = 0, j=0 ;
double d, ref ;
struct itimerval rttimer;
struct itimerval old_rttimer;
#ifdef DEBUG
fprintf (stderr, " UPDATE ");
#endif
if ( NSignaux != 0 )
{
/* Computes the closest expiration date */
d = DBL_MAX ;
for ( i = 0 ; i < NSignaux ; i++ )
{
n = 1 ;
if ( Signaux[i].NextCall < d )
d = Signaux[i].NextCall ;
#ifdef DEBUG
fprintf (stderr, " i %d tocomp %f",i,Signaux[i].NextCall);
#endif
}
/* Now sets the timer to the next expiration date */
if ( ! n )
{
#ifdef DEBUG
fprintf (stderr, " Disarms because no good signal anymore !!!");
#endif
rttimer.it_value.tv_sec = 0 ;
rttimer.it_value.tv_usec = 0 ;
NSignaux = 0 ;
}
else
{
ref = Mon_GetClock();
if ( d <= ref )
{
rttimer.it_value.tv_sec = 0 ;
rttimer.it_value.tv_usec = 100 ;
}
else
j = 1 ;
}
rttimer.it_interval.tv_sec = 0 ;
rttimer.it_interval.tv_usec = 0 ;
signal ( SIGALRM, (void (*)())Timer_Expiration );
if ( j )
{
LASTCALL = Mon_GetClock(); ;
d = d - LASTCALL ;
i = (int)d ;
j = (int)(((d - (double)i)*1000000.0)+0.5) ;
rttimer.it_value.tv_sec = i ;
rttimer.it_value.tv_usec = j ;
if ( (rttimer.it_value.tv_sec == 0) && (rttimer.it_value.tv_usec < 100) )
rttimer.it_value.tv_usec = 100 ;
#ifdef DEBUG
fprintf (stderr, " Arms at %d s %d musecs at %f pour %f",rttimer.it_value.tv_sec,rttimer.it_value.tv_usec,LASTCALL,(d+LASTCALL));
#endif
}
setitimer (ITIMER_REAL, &rttimer, &old_rttimer);
}
else
{
#ifdef DEBUG
fprintf (stderr, " Disarms because blocked or no signal !!!");
#endif
rttimer.it_value.tv_sec = 0 ;
rttimer.it_value.tv_usec = 0 ;
rttimer.it_interval.tv_sec = 0 ;
rttimer.it_interval.tv_usec = 0 ;
signal ( SIGALRM, (void (*)())Timer_Expiration );
setitimer (ITIMER_REAL, &rttimer, &old_rttimer);
}
}
/*
* T i m e r _ E x p i r a t i o n
*
*/
static void Timer_Expiration ( void )
{
int i, j ;
double ref ;
ref = Mon_GetClock() ;
#ifdef DEBUG
fprintf (stderr, " Expires a %f [%f]",ref,ref-LASTCALL);
#endif
/*
--- Loops on the signals
*/
for ( i = 0 ; i < NSignaux ; i++ )
{
#ifdef DEBUG
fprintf (stderr, " i %d comp %f ref %f",i,(Signaux[i].NextCall-ref),ref);
#endif
/*
Looks if this this signal has or should have expired
*/
if ( (fabs(ref - Signaux[i].NextCall) < 0.000100) || (ref > Signals[i].NextCall) )
{
/* Now calls the registered function */
if ( Signaux[i].fct != (MCore_Proc *)NULL )
{
#ifdef DEBUG
fprintf (stderr, " Calls fct signal %d",i);
#endif
j = Signaux[i].fct( Signaux[i].data ) ;
}
/* If this signal has to stay, rearms it for the next pass */
...............
}
}
/*
--- Destroys signals and resets next call if any remains
*/
#ifdef DEBUG
fprintf (stderr, " Destroy?");
#endif
/* i = Checks_For_Destroyed_Signals(); */
#ifdef DEBUG
fprintf (stderr, " Update?");
#endif
Updates_NextCall();
return ;
}
/*
* A d d T i m e r
*
*/
int AddTimer ( int type, double start, double interval, void *proc, void *clientdata )
{
int i, Type, start_realsecs, start_realmusecs, day_of_week ;
double start_micro, interval_micro, d ;
time_t now ;
struct tm *tbroken ;
if ( (type < 0) || (type > 1) )
Type = 0 ;
else
Type = type ;
i = NSignaux ;
/*
--- If we use some predefined values, computes now the real values
*/
/* Starting value */
start_micro = start ;
/* Interval value */
interval_micro = interval ;
/*
--- Computes what it makes in real
*/
start_realsecs = (int)start_micro ;
start_realmusecs = (int)((start_micro - (double)start_realsecs)*1000000.0) ;
/*
--- Stores the values into the buffer
*/
d = Mon_GetClock() ;
Signaux[i].NextCall = d + (double)start_realsecs + ((double)start_realmusecs/1000000.) ;
Signaux[i].Interval = interval_micro ;
Signaux[i].IntervalOrigin = interval ;
Signaux[i].fct = proc ;
Signaux[i].data = clientdata ;
/*
--- Now starts the timer
*/
NSignaux = NSignaux + 1 ;
Updates_NextCall ();
#ifdef DEBUG
fprintf (stderr, " Add a signal (%f s [%f][clock %f] at %g interval) => %d signals",
(Signaux[i].NextCall - d),Signaux[i].NextCall,d,interval,NSignaux);
#endif
return SUCCESS ;
} |
