vpx_mem/memory_manager/hmm_dflt_abort.c

   1 /*
   2  *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
   3  *
   4  *  Use of this source code is governed by a BSD-style license
   5  *  that can be found in the LICENSE file in the root of the source
   6  *  tree. An additional intellectual property rights grant can be found
   7  *  in the file PATENTS.  All contributing project authors may
   8  *  be found in the AUTHORS file in the root of the source tree.
   9  */
  10
  11
  12 /* This code is in the public domain.
  13 ** Version: 1.1  Author: Walt Karas
  14 */
  15
  16 /* The function in this file performs default actions if self-auditing
  17 ** finds heap corruption.  Don't rely on this code to handle the
  18 ** case where HMM is being used to implement the malloc and free standard
  19 ** library functions.  Rewrite the function if necessary to avoid using
  20 ** I/O and execution termination functions that call malloc or free.
  21 ** In Unix, for example, you would replace the fputs calls with calls
  22 ** to the write system call using file handle number 2.
  23 */
  24 #include "hmm_intrnl.h"
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27
  28 static int entered = 0;
  29
  30 /* Print abort message, file and line.  Terminate execution.
  31 */
  32 void hmm_dflt_abort(const char *file, const char *line)
  33 {
  34     /* Avoid use of printf(), which is more likely to use heap. */
  35
  36     if (entered)
  37
  38         /* The standard I/O functions called a heap function and caused
  39         ** an indirect recursive call to this function.  So we'll have
  40         ** to just exit without printing a message.  */
  41         while (1);
  42
  43     entered = 1;
  44
  45     fputs("\n_abort - Heap corruption\n" "File: ", stderr);
  46     fputs(file, stderr);
  47     fputs("  Line: ", stderr);
  48     fputs(line, stderr);
  49     fputs("\n\n", stderr);
  50     fputs("hmm_dflt_abort: while(1)!!!\n", stderr);
  51     fflush(stderr);
  52
  53     while (1);
  54 }