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/*
* Copyright © 2020 Ebrahim Byagowi
*
* This is part of HarfBuzz, a text shaping library.
*
* Permission is hereby granted, without written agreement and without
* license or royalty fees, to use, copy, modify, and distribute this
* software and its documentation for any purpose, provided that the
* above copyright notice and the following two paragraphs appear in
* all copies of this software.
*
* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*/
#include <stdlib.h>
#include <stdio.h>
#ifdef __cplusplus
extern "C" {
#endif
int alloc_state = 0;
__attribute__((no_sanitize("integer")))
static int fastrand ()
{
if (!alloc_state) return 1;
/* Based on https://software.intel.com/content/www/us/en/develop/articles/fast-random-number-generator-on-the-intel-pentiumr-4-processor.html */
alloc_state = (214013 * alloc_state + 2531011);
return (alloc_state >> 16) & 0x7FFF;
}
void* hb_malloc_impl (size_t size)
{
return (fastrand () % 16) ? malloc (size) : NULL;
}
void* hb_calloc_impl (size_t nmemb, size_t size)
{
return (fastrand () % 16) ? calloc (nmemb, size) : NULL;
}
void* hb_realloc_impl (void *ptr, size_t size)
{
return (fastrand () % 16) ? realloc (ptr, size) : NULL;
}
void hb_free_impl (void *ptr)
{
return free (ptr);
}
#ifdef __cplusplus
}
#endif
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