usr.bin/nbperf/graph2.h

   1 /*      $NetBSD$        */
   2 /*-
   3  * Copyright (c) 2009 The NetBSD Foundation, Inc.
   4  * All rights reserved.
   5  *
   6  * This code is derived from software contributed to The NetBSD Foundation
   7  * by Joerg Sonnenberger.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  *
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in
  17  *    the documentation and/or other materials provided with the
  18  *    distribution.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  22  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  23  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
  24  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  25  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
  26  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  27  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  28  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  29  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  30  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 /*
  35  * Implementation of common 2-graph routines:
  36  * - build a 2-graph with hash-pairs as edges
  37  * - check a 2-graph for acyclicness and compute an output order
  38  */
  39
  40 struct vertex2 {
  41         uint32_t l_edge, r_edge;
  42 };
  43
  44 struct edge2 {
  45         uint32_t left, right;
  46         uint32_t l_prev, l_next;
  47         uint32_t r_prev, r_next;
  48 };
  49
  50 struct graph2 {
  51         struct vertex2 *verts;
  52         struct edge2 *edges;
  53         uint32_t output_index;
  54         uint32_t *output_order;
  55         uint8_t *visited;
  56         uint32_t e, v;
  57 };
  58
  59 void    graph2_setup(struct graph2 *, uint32_t, uint32_t);
  60 void    graph2_free(struct graph2 *);
  61
  62 int     graph2_hash(struct nbperf *, struct graph2 *);
  63 int     graph2_output_order(struct graph2 *graph);