1 /* 2 * Copyright (c) 1987, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 */ 7 8 #if defined(LIBC_SCCS) && !defined(lint) 9 static char sccsid[] = "@(#)insque.c 8.1 (Berkeley) 06/04/93"; 10 #endif /* LIBC_SCCS and not lint */ 11 12 /* 13 * insque -- vax insque instruction 14 * 15 * NOTE: this implementation is non-atomic!! 16 */ 17 18 struct vaxque { /* queue format expected by VAX queue instructions */ 19 struct vaxque *vq_next; 20 struct vaxque *vq_prev; 21 }; 22 23 insque(e, prev) 24 register struct vaxque *e, *prev; 25 { 26 e->vq_prev = prev; 27 e->vq_next = prev->vq_next; 28 prev->vq_next->vq_prev = e; 29 prev->vq_next = e; 30 } 31