libveriuser/a_next.c

   1 /* vi:sw=6
   2  * Copyright (c) 2003 Michael Ruff (mruff at chiaro.com)
   3  *
   4  *    This source code is free software; you can redistribute it
   5  *    and/or modify it in source code form under the terms of the GNU
   6  *    General Public License as published by the Free Software
   7  *    Foundation; either version 2 of the License, or (at your option)
   8  *    any later version.
   9  *
  10  *    This program is distributed in the hope that it will be useful,
  11  *    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *    GNU General Public License for more details.
  14  *
  15  *    You should have received a copy of the GNU General Public License
  16  *    along with this program; if not, write to the Free Software
  17  *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
  18  */
  19 #ifdef HAVE_CVS_IDENT
  20 #ident "$Id: a_next.c,v 1.4 2006/10/30 22:45:37 steve Exp $"
  21 #endif
  22
  23 #include  <stdio.h>
  24 #include  <acc_user.h>
  25 #include  <vpi_user.h>
  26 #include  "priv.h"
  27
  28 /*
  29  * acc_next and friends implemented using VPI
  30  */
  31 handle acc_next(PLI_INT32 *type, handle scope, handle prev)
  32 {
  33       vpiHandle iter, hand = 0;
  34
  35       /* trace */
  36       if (pli_trace) {
  37             PLI_INT32 *ip;
  38             fprintf(pli_trace, "acc_next(%p <", type);
  39             for (ip = type; *ip; ip++) {
  40                   fprintf(pli_trace, "%s%d", ip != type ? "," : "", *ip);
  41             }
  42             fprintf(pli_trace, ">, %p", scope);
  43             if (scope)
  44                   fprintf(pli_trace, " \"%s\"", vpi_get_str(vpiName, scope));
  45             fprintf(pli_trace, ", %p", prev);
  46             if (prev)
  47                   fprintf(pli_trace, " \"%s\"", vpi_get_str(vpiName, prev));
  48             else
  49                   fprintf(pli_trace, ")");
  50             fflush(pli_trace);
  51       }
  52
  53       /*
  54        * The acc_next_* functions need to be reentrant, so we need to
  55        * rescan all the items upto the previous one, then return
  56        * the next one.
  57       */
  58       iter = vpi_iterate(vpiScope, scope);      // ICARUS extension
  59       if (prev) {
  60             while ((hand = vpi_scan(iter))) {
  61                   if (hand == prev) break;
  62             }
  63       }
  64
  65       /* scan for next */
  66       if (!prev || hand) {
  67             while ((hand = vpi_scan(iter))) {
  68                   if (acc_object_in_typelist(hand, type))
  69                         break;
  70             }
  71       }
  72
  73       /* don't leak iterators */
  74       if (hand) vpi_free_object(iter);
  75
  76       /* trace */
  77       if (pli_trace) {
  78             fprintf(pli_trace, " --> %p", hand);
  79             if (hand)
  80                   fprintf(pli_trace, " \"%s\"\n", vpi_get_str(vpiName, hand));
  81             else
  82                   fprintf(pli_trace, "\n");
  83
  84       }
  85
  86       return hand;
  87 }
  88
  89 handle acc_next_scope(handle scope, handle prev)
  90 {
  91       PLI_INT32 type[2] = {accScope, 0};
  92       return acc_next(type, scope, prev);
  93 }
  94
  95 /*
  96  * $Log: a_next.c,v $
  97  * Revision 1.4  2006/10/30 22:45:37  steve
  98  *  Updates for Cygwin portability (pr1585922)
  99  *
 100  * Revision 1.3  2003/06/17 16:55:07  steve
 101  *  1) setlinebuf() for vpi_trace
 102  *  2) Addes error checks for trace file opens
 103  *  3) removes now extraneous flushes
 104  *  4) fixes acc_next() bug
 105  *
 106  * Revision 1.2  2003/06/04 01:56:20  steve
 107  * 1) Adds configure logic to clean up compiler warnings
 108  * 2) adds acc_compare_handle, acc_fetch_range, acc_next_scope and
 109  *    tf_isetrealdelay, acc_handle_scope
 110  * 3) makes acc_next reentrant
 111  * 4) adds basic vpiWire type support
 112  * 5) fills in some acc_object_of_type() and acc_fetch_{full}type()
 113  * 6) add vpiLeftRange/RigthRange to signals
 114  *
 115  * Revision 1.1  2003/05/30 04:18:31  steve
 116  *  Add acc_next function.
 117  *
 118  */