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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2008 Dan Everton (safetydan)
*
* 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "plugin.h"
#include "rockmalloc.h"
#include "malloc.c"
void *rocklua_morecore(int size)
{
static char *sbrk_top = NULL;
static ssize_t total_size = 0;
void *ptr = 0;
if (size > 0) {
size = size + 4 - (size % 4);
if (sbrk_top == NULL) {
sbrk_top = rb->plugin_get_buffer((size_t *) &total_size);
}
if (sbrk_top == NULL || size + 4 > abs(total_size)) {
/* Try the audio buffer */
sbrk_top = rb->plugin_get_audio_buffer((size_t *) &total_size);
if(sbrk_top == NULL || size + 4 > abs(total_size)) {
printf("malloc failed for %d!\n", size);
return (void *) MFAIL;
}
}
ptr = sbrk_top + 4;
*((unsigned int *) sbrk_top) = size;
sbrk_top += size + 4;
total_size -= size + 4;
return ptr;
} else if (size < 0) {
/* we don't currently support shrink behavior */
return (void *) MFAIL;
} else {
return sbrk_top;
}
}
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