1994/0322/port/taslock.c (diff list | history)

1993/1204/sys/src/9/port/taslock.c:10,15 – 1994/0322/sys/src/9/port/taslock.c:10,16 (short | long | prev | next)
1992/0222		{
1993/1204		if(tas(&l->key) == 0) return;
1994/0322
1993/0830		for(;;){ while(l->key) ;
1993/1204/sys/src/9/port/taslock.c:18,29 – 1994/0322/sys/src/9/port/taslock.c:19,45
1992/0222		} }
1994/0322		void ilock(Lock *l) { l->sr = splhi(); if(tas(&l->key) == 0) return; for(;;){ while(l->key) ; if(tas(&l->key) == 0) return; } }
1992/0222		int canlock(Lock *l) { if(tas(&l->key)) return 0; l->pc = getcallerpc(((uchar*)&l) - sizeof(l));
1994/0322
1992/0222		return 1; }
1993/1204/sys/src/9/port/taslock.c:30,35 – 1994/0322/sys/src/9/port/taslock.c:46,60
1992/0222		void unlock(Lock *l) { l->pc = 0; l->key = 0;
1994/0322		} void iunlock(Lock *l) { ulong sr; sr = l->sr; l->key = 0; splx(sr);
1992/0222		}