1 /* 2 * Copyright (c) 1987 Regents of the University of California. 3 * All rights reserved. The Berkeley software License Agreement 4 * specifies the terms and conditions for redistribution. 5 */ 6 7 #if defined(LIBC_SCCS) && !defined(lint) 8 static char sccsid[] = "@(#)insque.c 5.1 (Berkeley) 01/27/87"; 9 #endif LIBC_SCCS and not lint 10 11 /* 12 * insque -- vax insque instruction 13 * 14 * NOTE: this implementation is non-atomic!! 15 */ 16 17 struct vaxque { /* queue format expected by VAX queue instructions */ 18 struct vaxque *vq_next; 19 struct vaxque *vq_prev; 20 }; 21 22 insque(e, prev) 23 register struct vaxque *e, *prev; 24 { 25 e->vq_prev = prev; 26 e->vq_next = prev->vq_next; 27 prev->vq_next->vq_prev = e; 28 prev->vq_next = e; 29 } 30