plan 9 kernel history: overview | file list | diff list

1990/0614/power/clock.c (diff list | history)

1990/0614/sys/src/9/power/clock.c:135,1471990/0728/sys/src/9/power/clock.c:135,149 (short | long | prev | next)
1990/0227    
	m->ticks = 0; 
} 
 
1990/0728    
#define NA 10 
1990/0227    
void 
clock(ulong n) 
{ 
	int i; 
1990/0728    
	int i, na; 
1990/0227    
	Alarm *a; 
	void (*f)(void*); 
	Proc *p; 
1990/0728    
	Alarm *alist[NA]; 
1990/0227    
 
	if(n&INTR2){ 
		i = *CLRTIM0; 
1990/0614/sys/src/9/power/clock.c:170,1851990/0728/sys/src/9/power/clock.c:172,193
1990/0227    
			if(m->alarm){ 
				a = m->alarm; 
				a->dt--; 
				while(a && a->dt<=0){ 
					f = a->f;	/* avoid race with cancel */ 
					if(f) 
						(*f)(a); 
1990/0728    
				for(na = 0; a && a->dt<=0 && na<NA; na++){ 
					alist[na] = a; 
1990/0227    
					delete(&m->alarm, 0, a); 
					a->busy = 0; 
					a = m->alarm; 
				} 
			} 
			unlock(&m->alarmlock); 
1990/0728    
				unlock(&m->alarmlock); 
	 
				/*  execute alarm functions outside the lock */ 
				for(i = 0; i < na; i++){ 
					f = alist[i]->f;	/* avoid race with cancel */ 
					if(f) 
						(*f)(alist[i]); 
					alist[i]->busy = 0; 
				} 
			} else 
				unlock(&m->alarmlock); 
1990/0227    
		} 
		return; 
	} 


source code copyright © 1990-2005 Lucent Technologies; see license
Plan 9 distribution
comments to russ cox (rsc@swtch.com)