Mercurial > hgrepos > Python2 > PyMuPDF

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>>>>> tag v1.26.5+1 for changeset b74429b0f5c4
author Franz Glasner <fzglas.hg@dom66.de>
date Sat, 11 Oct 2025 17:17:30 +0200
parents b50eed0cc0ef
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * Copyright © 2020 Ebrahim Byagowi
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3 *
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4 * This is part of HarfBuzz, a text shaping library.
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5 *
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6 * Permission is hereby granted, without written agreement and without
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7 * license or royalty fees, to use, copy, modify, and distribute this
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8 * software and its documentation for any purpose, provided that the
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9 * above copyright notice and the following two paragraphs appear in
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10 * all copies of this software.
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11 *
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12 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
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13 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
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14 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
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15 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
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16 * DAMAGE.
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17 *
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18 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
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19 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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20 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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21 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
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22 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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23 */
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25 #include <stdlib.h>
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26 #include <stdio.h>
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28 #ifdef __cplusplus
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29 extern "C" {
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30 #endif
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32 int alloc_state = 0;
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34 __attribute__((no_sanitize("integer")))
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35 static int fastrand ()
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36 {
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37 if (!alloc_state) return 1;
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38 /* 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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39 alloc_state = (214013 * alloc_state + 2531011);
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40 return (alloc_state >> 16) & 0x7FFF;
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41 }
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43 void* hb_malloc_impl (size_t size)
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44 {
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45 return (fastrand () % 16) ? malloc (size) : NULL;
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46 }
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48 void* hb_calloc_impl (size_t nmemb, size_t size)
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49 {
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50 return (fastrand () % 16) ? calloc (nmemb, size) : NULL;
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51 }
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53 void* hb_realloc_impl (void *ptr, size_t size)
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54 {
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55 return (fastrand () % 16) ? realloc (ptr, size) : NULL;
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56 }
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58 void hb_free_impl (void *ptr)
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59 {
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60 return free (ptr);
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61 }
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62
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63 #ifdef __cplusplus
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64 }
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65 #endif