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Diffstat (limited to 'Build/source/libs/harfbuzz/harfbuzz-0.9.15/src/hb-cache-private.hh')
-rw-r--r-- | Build/source/libs/harfbuzz/harfbuzz-0.9.15/src/hb-cache-private.hh | 74 |
1 files changed, 0 insertions, 74 deletions
diff --git a/Build/source/libs/harfbuzz/harfbuzz-0.9.15/src/hb-cache-private.hh b/Build/source/libs/harfbuzz/harfbuzz-0.9.15/src/hb-cache-private.hh deleted file mode 100644 index 19b70b7e395..00000000000 --- a/Build/source/libs/harfbuzz/harfbuzz-0.9.15/src/hb-cache-private.hh +++ /dev/null @@ -1,74 +0,0 @@ -/* - * Copyright © 2012 Google, Inc. - * - * 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. - * - * Google Author(s): Behdad Esfahbod - */ - -#ifndef HB_CACHE_PRIVATE_HH -#define HB_CACHE_PRIVATE_HH - -#include "hb-private.hh" - - -/* Implements a lock-free cache for int->int functions. */ - -template <unsigned int key_bits, unsigned int value_bits, unsigned int cache_bits> -struct hb_cache_t -{ - ASSERT_STATIC (key_bits >= cache_bits); - ASSERT_STATIC (key_bits + value_bits - cache_bits < 8 * sizeof (unsigned int)); - - inline void clear (void) - { - memset (values, 255, sizeof (values)); - } - - inline bool get (unsigned int key, unsigned int *value) - { - unsigned int k = key & ((1<<cache_bits)-1); - unsigned int v = values[k]; - if ((v >> value_bits) != (key >> cache_bits)) - return false; - *value = v & ((1<<value_bits)-1); - return true; - } - - inline bool set (unsigned int key, unsigned int value) - { - if (unlikely ((key >> key_bits) || (value >> value_bits))) - return false; /* Overflows */ - unsigned int k = key & ((1<<cache_bits)-1); - unsigned int v = ((key>>cache_bits)<<value_bits) | value; - values[k] = v; - return true; - } - - private: - unsigned int values[1<<cache_bits]; -}; - -typedef hb_cache_t<21, 16, 8> hb_cmap_cache_t; -typedef hb_cache_t<16, 24, 8> hb_advance_cache_t; - - -#endif /* HB_CACHE_PRIVATE_HH */ |