+++ /dev/null
-/* The Memory Allocation Debugging system
- Copyright (C) 1994 Janne Kukonlehto.
-
- To use MAD define HAVE_MAD and include "mad.h" in all the *.c files.
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-
-#include <config.h>
-#include "mad.h"
-#undef malloc
-#undef calloc
-#undef realloc
-#undef xmalloc
-#undef strdup
-#undef free
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <signal.h> /* For kill() */
-#ifdef HAVE_UNISTD_H
-# include <unistd.h> /* For getpid() */
-#endif
-
-/* Here to avoid non empty translation units */
-#ifdef HAVE_MAD
-
-/* Maximum number of memory area handles,
- increase this if you run out of handles */
-#define MAD_MAX_AREAS 3000
-/* Maximum file name length */
-#define MAD_MAX_FILE 50
-/* Signature for detecting overwrites */
-#define MAD_SIGNATURE (('M'<<24)|('a'<<16)|('d'<<8)|('S'))
-
-typedef struct {
- int in_use;
- long *start_sig;
- char file [MAD_MAX_FILE];
- int line;
- void *data;
- long *end_sig;
-} mad_mem_area;
-
-static mad_mem_area mem_areas [MAD_MAX_AREAS];
-void *watch_free_pointer = 0;
-
-/* This function is only called by the mad_check function */
-static void mad_abort (char *message, int area, char *file, int line)
-{
- fprintf (stderr, "MAD: %s in area %d.\r\n", message, area);
- fprintf (stderr, " Allocated in file \"%s\" at line %d.\r\n",
- mem_areas [area].file, mem_areas [area].line);
- fprintf (stderr, " Discovered in file \"%s\" at line %d.\r\n",
- file, line);
- fprintf (stderr, "MAD: Core dumping...\r\n");
- kill (getpid (), 3);
-}
-
-/* Checks all the allocated memory areas.
- This is called everytime memory is allocated or freed.
- You can also call it anytime you think memory might be corrupted. */
-void mad_check (char *file, int line)
-{
- int i;
-
- for (i = 0; i < MAD_MAX_AREAS; i++){
- if (! mem_areas [i].in_use)
- continue;
- if (*(mem_areas [i].start_sig) != MAD_SIGNATURE)
- mad_abort ("Overwrite error: Bad start signature", i, file, line);
- if (*(mem_areas [i].end_sig) != MAD_SIGNATURE)
- mad_abort ("Overwrite error: Bad end signature", i, file, line);
- }
-}
-
-/* Allocates a memory area. Used instead of malloc and calloc. */
-void *mad_alloc (int size, char *file, int line)
-{
- int i;
- char *area;
-
- mad_check (file, line);
-
- for (i = 0; i < MAD_MAX_AREAS; i++){
- if (! mem_areas [i].in_use)
- break;
- }
- if (i >= MAD_MAX_AREAS){
- fprintf (stderr, "MAD: Out of memory area handles. Increase the value of MAD_MAX_AREAS.\r\n");
- fprintf (stderr, " Discovered in file \"%s\" at line %d.\r\n",
- file, line);
- fprintf (stderr, "MAD: Aborting...\r\n");
- abort ();
- }
-
- mem_areas [i].in_use = 1;
- size = (size + 3) & (~3); /* Alignment */
- area = (char*) malloc (size + 2 * sizeof (long));
- if (!area){
- fprintf (stderr, "MAD: Out of memory.\r\n");
- fprintf (stderr, " Discovered in file \"%s\" at line %d.\r\n",
- file, line);
- fprintf (stderr, "MAD: Aborting...\r\n");
- abort ();
- }
-
- mem_areas [i].start_sig = (long*) area;
- mem_areas [i].data = (area + sizeof (long));
- mem_areas [i].end_sig = (long*) (area + size + sizeof (long));
- *(mem_areas [i].start_sig) = MAD_SIGNATURE;
- *(mem_areas [i].end_sig) = MAD_SIGNATURE;
-
- if (strlen (file) >= MAD_MAX_FILE)
- file [MAD_MAX_FILE - 1] = 0;
- strcpy (mem_areas [i].file, file);
- mem_areas [i].line = line;
-
- return mem_areas [i].data;
-}
-
-/* Reallocates a memory area. Used instead of realloc. */
-void *mad_realloc (void *ptr, int newsize, char *file, int line)
-{
- int i;
- char *area;
-
- if (!ptr)
- return (mad_alloc (newsize, file, line));
-
- mad_check (file, line);
-
- for (i = 0; i < MAD_MAX_AREAS; i++){
- if (! mem_areas [i].in_use)
- continue;
- if (mem_areas [i].data == ptr)
- break;
- }
- if (i >= MAD_MAX_AREAS){
- fprintf (stderr, "MAD: Attempted to realloc unallocated pointer: %p.\r\n", ptr);
- fprintf (stderr, " Discovered in file \"%s\" at line %d.\r\n",
- file, line);
- fprintf (stderr, "MAD: Aborting...\r\n");
- abort ();
- }
-
- newsize = (newsize + 3) & (~3); /* Alignment */
- area = (char*) realloc (mem_areas [i].start_sig, newsize + 2 * sizeof (long));
- if (!area){
- fprintf (stderr, "MAD: Out of memory.\r\n");
- fprintf (stderr, " Discovered in file \"%s\" at line %d.\r\n",
- file, line);
- fprintf (stderr, "MAD: Aborting...\r\n");
- abort ();
- }
-
- mem_areas [i].start_sig = (long*) area;
- mem_areas [i].data = (area + sizeof (long));
- mem_areas [i].end_sig = (long*) (area + newsize + sizeof (long));
- *(mem_areas [i].start_sig) = MAD_SIGNATURE;
- *(mem_areas [i].end_sig) = MAD_SIGNATURE;
-
- if (strlen (file) >= MAD_MAX_FILE)
- file [MAD_MAX_FILE - 1] = 0;
- strcpy (mem_areas [i].file, file);
- mem_areas [i].line = line;
-
- return mem_areas [i].data;
-}
-
-/* Duplicates a character string. Used instead of strdup. */
-char *mad_strdup (const char *s, char *file, int line)
-{
- char *t;
-
- t = (char *) mad_alloc (strlen (s) + 1, file, line);
- strcpy (t, s);
- return t;
-}
-
-/* Frees a memory area. Used instead of free. */
-void mad_free (void *ptr, char *file, int line)
-{
- int i;
-
- mad_check (file, line);
-
- if (watch_free_pointer && ptr == watch_free_pointer){
- printf ("watch free pointer found\n");
- }
-
- if (ptr == NULL){
- fprintf (stderr, "MAD: Attempted to free a NULL pointer in file \"%s\" at line %d.\n",
- file, line);
- return;
- }
-
- for (i = 0; i < MAD_MAX_AREAS; i++){
- if (! mem_areas [i].in_use)
- continue;
- if (mem_areas [i].data == ptr)
- break;
- }
- if (i >= MAD_MAX_AREAS){
- fprintf (stderr, "MAD: Attempted to free an unallocated pointer: %p.\r\n", ptr);
- fprintf (stderr, " Discovered in file \"%s\" at line %d.\r\n",
- file, line);
- fprintf (stderr, "MAD: Aborting...\r\n");
- abort ();
- }
-
- free (mem_areas [i].start_sig);
- mem_areas [i].in_use = 0;
-}
-
-/* Outputs a list of unfreed memory areas,
- to be called as a last thing before exiting */
-void mad_finalize (char *file, int line)
-{
- int i;
-
- mad_check (file, line);
-
- /* Following can be commented out if you don't want to see the
- memory leaks of the Midnight Commander */
-#if 1
- for (i = 0; i < MAD_MAX_AREAS; i++){
- if (! mem_areas [i].in_use)
- continue;
- fprintf (stderr, "MAD: Unfreed pointer: %p.\n", mem_areas [i].data);
- fprintf (stderr, " Allocated in file \"%s\" at line %d.\r\n",
- mem_areas [i].file, mem_areas [i].line);
- fprintf (stderr, " Discovered in file \"%s\" at line %d.\r\n",
- file, line);
- }
-#endif
-}
-
-#endif /* HAVE_MAD */
projects / reactos.git / blobdiff