1992/0602/port/taslock.c (diff list | history)

1992/0428/sys/src/9/port/taslock.c:5,10 – 1992/0602/sys/src/9/port/taslock.c:5,13 (short | long | prev | next)
1992/0222		#include "fns.h" #include "../port/error.h"
1992/0602		ulong spinner; ulong spinpc;
1992/0222		void lock(Lock *l) {
1992/0428/sys/src/9/port/taslock.c:13,22 – 1992/0602/sys/src/9/port/taslock.c:16,27
1992/0222		ulong pc; pc = getcallerpc(((uchar*)&l) - sizeof(l));
1992/0428		if(l == 0){ print("pc= %lux", pc); for(;;); }
1992/0602		if (tas(&ll->key) == 0){ if(u) u->p->hasspin = 1; ll->pc = pc; return; }
1992/0222		for(i = 0; i < 1000000; i++){ if (tas(&ll->key) == 0){ if(u)
1992/0428/sys/src/9/port/taslock.c:24,31 – 1992/0602/sys/src/9/port/taslock.c:29,36
1992/0222		ll->pc = pc; return; } if(u && u->p->state == Running) sched();
1992/0602		spinner++; spinpc = pc;
1992/0222		} i = l->key; l->key = 0;