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/*
** allocf.c - default memory allocation function
**
** See Copyright Notice in mruby.h
*/
#include <stdlib.h>
#include <mruby.h>
/* This function serves as the default memory allocation function and accepts two arguments:
*
* - `p`: The previous pointer to the memory region. For memory allocation, this parameter is NULL.
* - `size`: The new size of the memory region to be returned. If size is 0, the memory region will be freed.
*
* All memory allocation from the inside of mruby uses this function.
*
* If you want to use your own memory allocator, you have two options:
*
* - provide your own version of malloc() / realloc() / free()
*
* - redefine mrb_basic_alloc_func() in your application.
*
* See doc/guides/memory.md for detail.
*/
void*
mrb_basic_alloc_func(void *p, size_t size)
{
if (size == 0) {
/* `free(NULL)` should be no-op */
free(p);
return NULL;
}
else {
/* `realloc(NULL, size)` should work as `malloc(size)` */
return realloc(p, size);
}
}