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/*
viDOOM - level editor for DOOM
Copyright (C) 2000 Ian Cowburn (ianc@noddybox.demon.co.uk)
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-------------------------------------------------------------------------
Memory allocation code
*/
static const char rcs_id[]="$Id$";
#include "config.h"
#include <stdio.h>
#include <string.h>
#include "mem.h"
#include "gfx.h"
#include "file.h"
#include "debug.h"
/* Set MEMSTAT to the following levels :
0 - Nodebug information
1 - Fatal debug information (still allocated block on failure,
general release errors)
2 - All debug information
Regardless of the above no debug is generated if DEBUG is not set
*/
#ifndef DEBUG
#define MEMSTAT 0
#else
#define MEMSTAT 1
#endif
typedef struct memmap
{
char file[64];
int line;
void *addr;
struct memmap *next;
struct memmap *prev;
} MemMap;
static MemMap *mmap=NULL;
static void DumpMemList(char *p)
{
MemMap *m;
# if MEMSTAT == 0
return;
# endif
Debug(("**** %s ****\n",p));
Debug(("Still waiting to be freed:\n"));
if ((m=mmap))
while(m)
{
Debug(("\t%p allocated to %s:%d\n",m->addr,m->file,m->line));
m=m->next;
}
else
Debug(("\tNONE\n"));
}
static void AddMM(char *mode,char *file, int line, void *addr)
{
MemMap *n;
# if MEMSTAT == 0
return;
# endif
n=malloc(sizeof(MemMap));
strcpy(n->file,Basename(file));
n->line=line;
n->addr=addr;
if (!mmap)
{
mmap=n;
n->next=NULL;
n->prev=NULL;
}
else
{
mmap->prev=n;
n->next=mmap;
n->prev=NULL;
mmap=n;
}
# if MEMSTAT == 2
Debug(("%s: Memory %p allocated to %s:%d\n",mode,addr,file,line));
# endif
}
static void RmMM(char *mode, char *file, int line, void *addr)
{
MemMap *n;
int del;
# if MEMSTAT == 0
return;
# endif
del=0;
n=mmap;
while(n)
if (n->addr==addr)
{
# if MEMSTAT == 2
Debug(("%s: Address %p freed by %s:%d\n",mode,addr,file,line));
# endif
if (n->prev)
n->prev->next=n->next;
else
mmap=n->next;
if (n->next)
n->next->prev=n->prev;
free(n);
n=NULL;
del=1;
}
else
n=n->next;
if (!del)
Debug(("%s: ***** Address %p not found - freed by %s:%d\n",
mode,addr,file,line));
}
void *FGrab(char *fn, int line, int len)
{
char *ptr;
if (len==0)
len=1;
if (!(ptr=malloc(len)))
{
DumpMemList("GRAB FAILED");
GFX_exit(EXIT_FAILURE,"Memory allocation failed!\n"
"%s:%d Grab(%d)\n",fn,line,len);
}
memset(ptr,0,len);
AddMM("Grab",fn,line,ptr);
return(ptr);
}
void *FReGrab(char *fn, int line, void *ptr, int len)
{
if (len==0)
len=1;
if (ptr)
RmMM("ReGrab(RELEASE)",fn,line,ptr);
if (!(ptr=realloc(ptr,len)))
{
DumpMemList("REGRAB FAILED");
GFX_exit(EXIT_FAILURE,"Memory allocation failed!\n"
"%s:%d ReGrab(%d)\n",fn,line,len);
}
AddMM("ReGrab(ACQUIRE)",fn,line,ptr);
return(ptr);
}
void FRelease(char *fn, int line, void *p)
{
RmMM("Release",fn,line,p);
free(p);
}
void *FCopy(char *fn, int line, void *p,int len)
{
void *ptr;
if (len==0)
ptr=malloc(1);
else
ptr=malloc(len);
if (!ptr)
{
DumpMemList("COPY FAILED");
GFX_exit(EXIT_FAILURE,"Memory allocation failed!\n"
"%s:%d Copy(%p,%d)\n",fn,line,p,len);
}
if (len)
memcpy(ptr,p,len);
AddMM("Copy",fn,line,ptr);
return(ptr);
}
char *FStrdup(char *fn, int line, char *p)
{
char n_fn[PATH_MAX];
char *ptr;
strcpy(n_fn,fn);
strcat(n_fn," [STRDUP]");
if (p)
{
if (!(ptr=malloc(strlen(p)+1)))
{
DumpMemList("STRDUP FAILED");
GFX_exit(EXIT_FAILURE,"Memory allocation failed!\n"
"%s:%d Stdup(%s)\n",fn,line,p);
}
strcpy(ptr,p);
AddMM("Strdup",fn,line,ptr);
return(ptr);
}
else
return(NULL);
}
/* END OF FILE */
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