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Annotation of 43BSDTahoe/lib/libc/gen/remque.c, revision 1.1.1.1

1.1       root        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[] = "@(#)remque.c   5.1 (Berkeley) 1/27/87";
                      9: #endif LIBC_SCCS and not lint
                     10: 
                     11: /*
                     12:  * remque -- vax remque 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: remque(e)
                     23:        register struct vaxque *e;
                     24: {
                     25:        e->vq_prev->vq_next = e->vq_next;
                     26:        e->vq_next->vq_prev = e->vq_prev;
                     27: }

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