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