1993/0528/port/taslock.c (diff list | history)

1993/0528/sys/src/9/port/taslock.c:8,26 – 1993/0830/sys/src/9/port/taslock.c:8,19 (short | long | prev | next)
1992/0222		void lock(Lock *l) { int i; ulong pc;                  pc = getcallerpc(((uchar*)&l) - sizeof(l));
1992/0914
1993/0528		for(i = 0; i < 20000000; i++){
1992/0914		if (tas(&l->key) == 0){ l->pc = pc;
1993/0830		for(;;){ while(l->key) ; if(tas(&l->key) == 0)
1992/0222		return; } }
1992/0914		panic("lock loop 0x%lux key 0x%lux pc 0x%lux held by pc 0x%lux\n",
1993/0525		i, l->key, pc, l->pc);
1992/0222		} int