gmon/bb_exit_func.c

   1 /* Copyright (C) 1996, 1997, 1998, 2000 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by David Mosberger (davidm@cs.arizona.edu).
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Library General Public License as
   7    published by the Free Software Foundation; either version 2 of the
   8    License, or (at your option) any later version.
   9
  10    The GNU C Library 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 GNU
  13    Library General Public License for more details.
  14
  15    You should have received a copy of the GNU Library General Public
  16    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  17    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18    Boston, MA 02111-1307, USA.  */
  19
  20 /* __bb_exit_func() dumps all the basic-block statistics linked into
  21    the __bb_head chain to .d files.  */
  22
  23 #include <sys/gmon.h>
  24 #include <sys/gmon_out.h>
  25 #include <sys/types.h>
  26
  27 #include <stdio.h>
  28 #include <string.h>
  29
  30 #define OUT_NAME        "gmon.out"
  31
  32
  33 void
  34 __bb_exit_func (void)
  35 {
  36   const int version = GMON_VERSION;
  37   struct gmon_hdr ghdr;
  38   struct __bb *ptr;
  39   FILE *fp;
  40   fp = fopen (OUT_NAME, "wb");
  41   if (!fp)
  42     {
  43       perror (OUT_NAME);
  44       return;
  45     }
  46   memcpy (&ghdr.cookie[0], GMON_MAGIC, 4);
  47   memcpy (&ghdr.version, &version, sizeof (version));
  48   fwrite_unlocked (&ghdr, sizeof (ghdr), 1, fp);
  49
  50   for (ptr = __bb_head; ptr != 0; ptr = ptr->next)
  51     {
  52       u_int ncounts = ptr->ncounts;
  53       u_char tag;
  54       u_int i;
  55
  56       tag = GMON_TAG_BB_COUNT;
  57       fwrite_unlocked (&tag, sizeof (tag), 1, fp);
  58       fwrite_unlocked (&ncounts, sizeof (ncounts), 1, fp);
  59
  60       for (i = 0; i < ncounts; ++i)
  61         {
  62           fwrite_unlocked (&ptr->addresses[i], sizeof (ptr->addresses[0]), 1,
  63                            fp);
  64           fwrite_unlocked (&ptr->counts[i], sizeof (ptr->counts[0]), 1, fp);
  65         }
  66     }
  67   fclose (fp);
  68 }