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/* MikMod sound library
(c) 1998, 1999 Miodrag Vallat and others - see file AUTHORS for
complete list.
This library is free software; you can redistribute it and/or modify
it under the terms of the GNU Library 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 Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA.
*/
/*==============================================================================
$Id: mmalloc.c,v 1.3 2007/12/03 20:42:58 denis111 Exp $
Dynamic memory routines
==============================================================================*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "mikmod_internals.h"
#define ALIGN_STRIDE 16
static void * align_pointer(char *ptr, size_t stride)
{
char *pptr = ptr + sizeof(void*);
char *fptr;
size_t err = ((size_t)pptr)&(stride-1);
if (err)
fptr = pptr + (stride - err);
else
fptr = pptr;
*(size_t*)(fptr - sizeof(void*)) = (size_t)ptr;
return fptr;
}
static void *get_pointer(void *data)
{
unsigned char *_pptr = (unsigned char*)data - sizeof(void*);
size_t _ptr = *(size_t*)_pptr;
return (void*)_ptr;
}
void* MikMod_realloc(void *data, size_t size)
{
return realloc(data, size);
#if 0
if (data)
{
#if defined __MACH__
void *d = realloc(data, size);
if (d)
{
return d;
}
return 0;
#elif (defined _WIN32 || defined _WIN64) && !defined(_WIN32_WCE)
return _aligned_realloc(data, size, ALIGN_STRIDE);
#else
unsigned char *newPtr = (unsigned char *)realloc(get_pointer(data), size + ALIGN_STRIDE + sizeof(void*));
return align_pointer(newPtr, ALIGN_STRIDE);
#endif
}
return MikMod_malloc(size);
#endif
}
/* Same as malloc, but sets error variable _mm_error when fails. Returns a 16-byte aligned pointer */
void* MikMod_malloc(size_t size)
{
void *d;
if(!(d=calloc(1,size))) {
_mm_errno = MMERR_OUT_OF_MEMORY;
if(_mm_errorhandler) _mm_errorhandler();
}
return d;
#if 0
#if defined __MACH__
void *d = calloc(1, size);
if (d)
{
return d;
}
return 0;
#elif (defined _WIN32 || defined _WIN64) && !defined(_WIN32_WCE)
void * d = _aligned_malloc(size, ALIGN_STRIDE);
if (d)
{
ZeroMemory(d, size);
return d;
}
return 0;
#else
void *d = calloc(1, size + ALIGN_STRIDE + sizeof(void*));
if(!d) {
_mm_errno = MMERR_OUT_OF_MEMORY;
if(_mm_errorhandler) _mm_errorhandler();
}
return align_pointer(d, ALIGN_STRIDE);
#endif
#endif
}
/* Same as calloc, but sets error variable _mm_error when fails */
void* MikMod_calloc(size_t nitems,size_t size)
{
void *d;
if(!(d=calloc(nitems,size))) {
_mm_errno = MMERR_OUT_OF_MEMORY;
if(_mm_errorhandler) _mm_errorhandler();
}
return d;
#if 0
#if defined __MACH__
void *d = calloc(nitems, size);
if (d)
{
return d;
}
return 0;
#elif (defined _WIN32 || defined _WIN64) && !defined(_WIN32_WCE)
void * d = _aligned_malloc(size * nitems, ALIGN_STRIDE);
if (d)
{
ZeroMemory(d, size * nitems);
return d;
}
return 0;
#else
void *d = calloc(nitems, size + ALIGN_STRIDE + sizeof(void*));
if(!d) {
_mm_errno = MMERR_OUT_OF_MEMORY;
if(_mm_errorhandler) _mm_errorhandler();
}
return align_pointer(d, ALIGN_STRIDE);
#endif
#endif
}
void MikMod_free(void *data)
{
free(data);
#if 0
if (data)
{
#if defined __MACH__
free(data);
#elif (defined _WIN32 || defined _WIN64) && !defined(_WIN32_WCE)
_aligned_free(data);
#else
free(get_pointer(data));
#endif
}
#endif
}
/* ex:set ts=4: */
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