2 * Copyright (C) 2007,2008,2009 Red Hat, Inc.
4 * This is part of HarfBuzz, an OpenType Layout engine library.
6 * Permission is hereby granted, without written agreement and without
7 * license or royalty fees, to use, copy, modify, and distribute this
8 * software and its documentation for any purpose, provided that the
9 * above copyright notice and the following two paragraphs appear in
10 * all copies of this software.
12 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
13 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
14 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
15 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
18 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
19 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
20 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
21 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
22 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
24 * Red Hat Author(s): Behdad Esfahbod
34 /* #define HB_DEBUG 1 */
47 #include "hb-common.h"
51 #define hb_be_uint16(v) ((uint16_t) hb_be_int16 ((uint16_t) v))
52 #define hb_be_uint32(v) ((uint32_t) hb_be_int32 ((uint32_t) v))
54 /* We need external help for these */
60 /* Macros to convert to/from BigEndian */
61 #define hb_be_int16(v) GINT16_FROM_BE (v)
62 #define hb_be_int32(v) GINT32_FROM_BE (v)
64 typedef int hb_atomic_int_t;
65 #define hb_atomic_int_fetch_and_add(AI, V) g_atomic_int_exchange_and_add (&(AI), V)
66 #define hb_atomic_int_get(AI) g_atomic_int_get (&(AI))
67 #define hb_atomic_int_set(AI, V) g_atomic_int_set (&(AI), V)
69 typedef GStaticMutex hb_mutex_t;
70 #define HB_MUTEX_INIT G_STATIC_MUTEX_INIT
71 #define hb_mutex_init(M) g_static_mutex_init (&M)
72 #define hb_mutex_lock(M) g_static_mutex_lock (&M)
73 #define hb_mutex_trylock(M) g_static_mutex_trylock (&M)
74 #define hb_mutex_unlock(M) g_static_mutex_unlock (&M)
77 #error "Could not find any system to define platform macros, see hb-private.h"
84 #define MIN(a,b) ((a) < (b) ? (a) : (b))
91 # define NULL ((void *)0)
102 #define HB_STMT_START do
103 #define HB_STMT_END while (0)
105 #define _ASSERT_STATIC1(_line, _cond) typedef int _static_assert_on_line_##_line##_failed[(_cond)?1:-1]
106 #define _ASSERT_STATIC0(_line, _cond) _ASSERT_STATIC1 (_line, (_cond))
107 #define ASSERT_STATIC(_cond) _ASSERT_STATIC0 (__LINE__, (_cond))
109 #define ASSERT_SIZE(_type, _size) ASSERT_STATIC (sizeof (_type) == (_size))
112 #if defined(__GNUC__) && (__GNUC__ > 2) && defined(__OPTIMIZE__)
113 #define _CAIRO_BOOLEAN_EXPR(expr) \
115 int _cairo_boolean_var_; \
117 _cairo_boolean_var_ = 1; \
119 _cairo_boolean_var_ = 0; \
120 _cairo_boolean_var_; \
122 #define HB_LIKELY(expr) (__builtin_expect (_CAIRO_BOOLEAN_EXPR(expr), 1))
123 #define HB_UNLIKELY(expr) (__builtin_expect (_CAIRO_BOOLEAN_EXPR(expr), 0))
125 #define HB_LIKELY(expr) (expr)
126 #define HB_UNLIKELY(expr) (expr)
131 #define __attribute__(x)
135 #define HB_GNUC_UNUSED __attribute__((unused))
136 #define HB_GNUC_PURE __attribute__((pure))
137 #define HB_GNUC_CONST __attribute__((const))
139 #define HB_GNUC_UNUSED
141 #define HB_GNUC_CONST
145 #if (defined(__WIN32__) && !defined(__WINE__)) || defined(_MSC_VER)
146 #define snprintf _snprintf
151 #define inline __inline
154 #ifdef __STRICT_ANSI__
156 #define inline __inline__
160 /* Return the number of 1 bits in mask.
162 * GCC 3.4 supports a "population count" builtin, which on many targets is
163 * implemented with a single instruction. There is a fallback definition
164 * in libgcc in case a target does not have one, which should be just as
165 * good as the open-coded solution below, (which is "HACKMEM 169").
167 static HB_GNUC_UNUSED inline unsigned int
168 _hb_popcount32 (uint32_t mask)
170 #if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)
171 return __builtin_popcount (mask);
175 y = (mask >> 1) &033333333333;
176 y = mask - y - ((y >>1) & 033333333333);
177 return (((y + (y >> 3)) & 030707070707) % 077);
182 #include "hb-object-private.h"
184 #endif /* HB_PRIVATE_H */