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/*-------------------------------------------------------------------------
newalloc.c - SDCC Memory allocation functions
These functions are wrappers for the standard malloc, realloc and free
functions.
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, 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-------------------------------------------------------------------------*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <memory.h>
#include <assert.h>
#include "newalloc.h"
#if OPT_ENABLE_LIBGC
#include <gc/gc.h>
#define MALLOC GC_malloc
#define REALLOC GC_realloc
/* PENDING: This is a mild hack. If we try to GC_free something
allocated with malloc() then the program will segfault. Might as
well drop it and let the garbase collector take care of things.
*/
#define FREE(_a)
#else
#define MALLOC malloc
#define REALLOC realloc
#define FREE free
#endif
#define TRACEMALLOC 0
#if TRACEMALLOC
enum
{
TRACESIZE = 4096
};
static int _allocs[TRACESIZE];
static int _above;
static void
_dumpTrace (int code, void *parg)
{
int i;
for (i = 0; i < TRACESIZE; i++)
{
if (_allocs[i])
{
printf ("%u %u\n", _allocs[i], i);
}
}
printf ("%u above\n", _above);
}
static void
_log (int size)
{
static int registered;
if (registered == 0)
{
on_exit (_dumpTrace, NULL);
registered = 1;
}
if (size == 12)
{
_above++;
}
if (size >= TRACESIZE)
{
_above++;
}
else
{
_allocs[size]++;
}
}
#endif
/*
-------------------------------------------------------------------------------
Clear_realloc - Reallocate a memory block and clear any memory added with
out of memory error detection
-------------------------------------------------------------------------------
*/
void *
Clear_realloc (void *OldPtr, size_t OldSize, size_t NewSize)
{
void *NewPtr;
NewPtr = REALLOC (OldPtr, NewSize);
if (!NewPtr)
{
printf ("ERROR - No more memory\n");
/* werror(E_OUT_OF_MEM,__FILE__,NewSize);*/
exit (1);
}
if (NewPtr)
if (NewSize > OldSize)
memset ((char *) NewPtr + OldSize, 0x00, NewSize - OldSize);
return NewPtr;
}
/*
-------------------------------------------------------------------------------
Safe_realloc - Reallocate a memory block with out of memory error detection
-------------------------------------------------------------------------------
*/
void *
Safe_realloc (void *OldPtr, size_t NewSize)
{
void *NewPtr;
NewPtr = REALLOC (OldPtr, NewSize);
if (!NewPtr)
{
printf ("ERROR - No more memory\n");
/* werror(E_OUT_OF_MEM,__FILE__,NewSize);*/
exit (1);
}
return NewPtr;
}
/*
-------------------------------------------------------------------------------
Safe_calloc - Allocate a block of memory from the application heap, clearing
all data to zero and checking for out of memory errors.
-------------------------------------------------------------------------------
*/
void *
Safe_calloc (size_t Elements, size_t Size)
{
void *NewPtr;
NewPtr = MALLOC (Elements * Size);
#if TRACEMALLOC
_log (Elements * Size);
#endif
if (!NewPtr)
{
printf ("ERROR - No more memory\n");
/* werror(E_OUT_OF_MEM,__FILE__,Size);*/
exit (1);
}
memset (NewPtr, 0, Elements * Size);
return NewPtr;
}
/*
-------------------------------------------------------------------------------
Safe_malloc - Allocate a block of memory from the application heap
and checking for out of memory errors.
-------------------------------------------------------------------------------
*/
void *
Safe_malloc (size_t Size)
{
void *NewPtr;
NewPtr = MALLOC (Size);
#if TRACEMALLOC
_log (Size);
#endif
if (!NewPtr)
{
printf ("ERROR - No more memory\n");
/* werror(E_OUT_OF_MEM,__FILE__,Size);*/
exit (1);
}
return NewPtr;
}
void *
Safe_alloc (size_t Size)
{
return Safe_calloc (1, Size);
}
void
Safe_free (void *p)
{
FREE (p);
}
char *
Safe_strndup (const char *sz, size_t size)
{
char *pret;
assert (sz);
pret = Safe_alloc (size + 1);
strncpy (pret, sz, size);
pret[size] = '\0';
return pret;
}
char *
Safe_strdup (const char *sz)
{
assert (sz);
return Safe_strndup (sz, strlen (sz));
}
void *
traceAlloc (allocTrace * ptrace, void *p)
{
assert (ptrace);
assert (p);
/* Also handles where max == 0 */
if (ptrace->num == ptrace->max)
{
/* Add an offset to handle max == 0 */
ptrace->max = (ptrace->max + 2) * 2;
ptrace->palloced = Safe_realloc (ptrace->palloced, ptrace->max * sizeof (*ptrace->palloced));
}
ptrace->palloced[ptrace->num++] = p;
return p;
}
void
freeTrace (allocTrace * ptrace)
{
int i;
assert (ptrace);
for (i = 0; i < ptrace->num; i++)
{
Safe_free (ptrace->palloced[i]);
}
ptrace->num = 0;
Safe_free (ptrace->palloced);
ptrace->palloced = NULL;
ptrace->max = 0;
}
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