kc3-lang/harfbuzz/src/hb-private.h

• Show log

  Commit

• Hash : c65b26ac
  Author :
  Date : 2009-11-18T11:27:33
  

  Use autoconf FLEXIBLE_ARRAY_MEMBER when available
  

Download

• src/hb-private.h

• /*
   * Copyright (C) 2007,2008,2009  Red Hat, Inc.
   *
   *  This is part of HarfBuzz, an OpenType Layout engine 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.
   *
   * Red Hat Author(s): Behdad Esfahbod
   */
  
  #ifndef HB_PRIVATE_H
  #define HB_PRIVATE_H
  
  #if HAVE_CONFIG_H
  #include "config.h"
  #endif
  
  /* #define HB_DEBUG 1 */
  #ifndef HB_DEBUG
  #define HB_DEBUG 0
  #endif
  
  #include <stdlib.h>
  #include <string.h>
  #include <assert.h>
  #if HB_DEBUG
  #include <stdio.h>
  #include <errno.h>
  #endif
  
  #include "hb-common.h"
  
  
  /* We need external help for these */
  
  #ifdef HAVE_GLIB
  
  #include <glib.h>
  
  typedef int hb_atomic_int_t;
  #define hb_atomic_int_fetch_and_add(AI, V)	g_atomic_int_exchange_and_add (&(AI), V)
  #define hb_atomic_int_get(AI)			g_atomic_int_get (&(AI))
  #define hb_atomic_int_set(AI, V)		g_atomic_int_set (&(AI), V)
  
  typedef GStaticMutex hb_mutex_t;
  #define HB_MUTEX_INIT			G_STATIC_MUTEX_INIT
  #define hb_mutex_init(M)		g_static_mutex_init (&M)
  #define hb_mutex_lock(M)		g_static_mutex_lock (&M)
  #define hb_mutex_trylock(M)		g_static_mutex_trylock (&M)
  #define hb_mutex_unlock(M)		g_static_mutex_unlock (&M)
  
  #else
  
  #ifdef _MSC_VER
  #pragma message(__LOC__"Could not find any system to define platform macros, library will NOT be thread-safe")
  #else
  #warning "Could not find any system to define platform macros, library will NOT be thread-safe"
  #endif
  
  typedef int hb_atomic_int_t;
  #define hb_atomic_int_fetch_and_add(AI, V)	((AI) += (V), (AI) - (V))
  #define hb_atomic_int_get(AI)			(AI)
  #define hb_atomic_int_set(AI, V)		do { (AI) = (V); } while (0)
  
  typedef int hb_mutex_t;
  #define HB_MUTEX_INIT			0
  #define hb_mutex_init(M)		do { (M) = 0; } while (0)
  #define hb_mutex_lock(M)		do { (M) = 1; } while (0)
  #define hb_mutex_trylock(M)		((M) = 1, 1)
  #define hb_mutex_unlock(M)		do { (M) = 0; } while (0)
  
  #endif
  
  
  /* Big-endian handling */
  
  #define hb_be_uint16(v)			((uint16_t) ((((const uint8_t *)&(v))[0] << 8) + (((const uint8_t *)&(v))[1])))
  
  #define hb_be_uint8_put_unaligned(v,V)	(v[0] = (V), 0)
  #define hb_be_uint8_get_unaligned(v)	(uint8_t) (v[0])
  #define hb_be_uint8_cmp_unaligned(a,b)	(a[0] == b[0])
  #define hb_be_int8_put_unaligned	hb_be_uint8_put_unaligned
  #define hb_be_int8_get_unaligned	(int8_t) hb_be_uint8_get_unaligned
  #define hb_be_int8_cmp_unaligned	hb_be_uint8_cmp_unaligned
  
  #define hb_be_uint16_put_unaligned(v,V)	(v[0] = (V>>8), v[1] = (V), 0)
  #define hb_be_uint16_get_unaligned(v)	(uint16_t) ((v[0] << 8) + v[1])
  #define hb_be_uint16_cmp_unaligned(a,b)	(a[0] == b[0] && a[1] == b[1])
  #define hb_be_int16_put_unaligned	hb_be_uint16_put_unaligned
  #define hb_be_int16_get_unaligned	(int16_t) hb_be_uint16_get_unaligned
  #define hb_be_int16_cmp_unaligned	hb_be_uint16_cmp_unaligned
  
  #define hb_be_uint32_put_unaligned(v,V)	(v[0] = (V>>24), v[1] = (V>>16), v[2] = (V>>8), v[3] = (V), 0)
  #define hb_be_uint32_get_unaligned(v)	(uint32_t) ((v[0] << 24) + (v[1] << 16) + (v[2] << 8) + v[3])
  #define hb_be_uint32_cmp_unaligned(a,b)	(a[0] == b[0] && a[1] == b[1] && a[2] == b[2] && a[3] == b[3])
  #define hb_be_int32_put_unaligned	hb_be_uint32_put_unaligned
  #define hb_be_int32_get_unaligned	(int32_t) hb_be_uint32_get_unaligned
  #define hb_be_int32_cmp_unaligned	hb_be_uint32_cmp_unaligned
  
  
  /* Basics */
  
  #undef MIN
  #define MIN(a,b) ((a) < (b) ? (a) : (b))
  
  #undef MAX
  #define MAX(a,b) ((a) > (b) ? (a) : (b))
  
  #ifndef HB_INTERNAL
  # define HB_INTERNAL extern
  #endif
  
  #ifndef NULL
  # define NULL ((void *) 0)
  #endif
  
  #undef FALSE
  #define FALSE 0
  
  #undef TRUE
  #define TRUE 1
  
  #undef  ARRAY_LENGTH
  #define ARRAY_LENGTH(__array) ((signed int) (sizeof (__array) / sizeof (__array[0])))
  
  #define HB_STMT_START do
  #define HB_STMT_END   while (0)
  
  #define _ASSERT_STATIC1(_line, _cond) typedef int _static_assert_on_line_##_line##_failed[(_cond)?1:-1]
  #define _ASSERT_STATIC0(_line, _cond) _ASSERT_STATIC1 (_line, (_cond))
  #define ASSERT_STATIC(_cond) _ASSERT_STATIC0 (__LINE__, (_cond))
  
  #define ASSERT_SIZE(_type, _size) ASSERT_STATIC (sizeof (_type) == (_size))
  
  /* Size signifying variable-sized array */
  #ifdef FLEXIBLE_ARRAY_MEMBER
  #define VAR FLEXIBLE_ARRAY_MEMBER
  #else
  #define VAR 1
  #endif
  
  #define VAR0 (VAR+0)
  #define ASSERT_SIZE_VAR(_type, _size, _var_type) \
  	ASSERT_STATIC (sizeof (_type) == (_size) + VAR0 * sizeof (_var_type))
  #define ASSERT_SIZE_VAR2(_type, _size, _var_type1, _var_type2) \
  	ASSERT_STATIC (sizeof (_type) == (_size) + VAR0 * sizeof (_var_type1) + VAR0 * sizeof (_var_type2))
  
  #if defined(__GNUC__) && (__GNUC__ > 2) && defined(__OPTIMIZE__)
  #define _HB_BOOLEAN_EXPR(expr) \
    __extension__ ({ \
       int _hb_boolean_var_; \
       if (expr) \
  	_hb_boolean_var_ = 1; \
       else \
  	_hb_boolean_var_ = 0; \
       _hb_boolean_var_; \
    })
  #define HB_LIKELY(expr) (__builtin_expect (_HB_BOOLEAN_EXPR(expr), 1))
  #define HB_UNLIKELY(expr) (__builtin_expect (_HB_BOOLEAN_EXPR(expr), 0))
  #else
  #define HB_LIKELY(expr) (expr)
  #define HB_UNLIKELY(expr) (expr)
  #endif
  
  #ifndef __GNUC__
  #undef __attribute__
  #define __attribute__(x)
  #endif
  
  #if __GNUC__ >= 3
  #define HB_GNUC_UNUSED	__attribute__((unused))
  #define HB_GNUC_PURE	__attribute__((pure))
  #define HB_GNUC_CONST	__attribute__((const))
  #else
  #define HB_GNUC_UNUSED
  #define HB_GNUC_PURE
  #define HB_GNUC_CONST
  #endif
  
  
  #if (defined(__WIN32__) && !defined(__WINE__)) || defined(_MSC_VER)
  #define snprintf _snprintf
  #endif
  
  #ifdef _MSC_VER
  #undef inline
  #define inline __inline
  #endif
  
  #ifdef __STRICT_ANSI__
  #undef inline
  #define inline __inline__
  #endif
  
  
  /* Return the number of 1 bits in mask.
   *
   * GCC 3.4 supports a "population count" builtin, which on many targets is
   * implemented with a single instruction. There is a fallback definition
   * in libgcc in case a target does not have one, which should be just as
   * good as the open-coded solution below, (which is "HACKMEM 169").
   */
  static HB_GNUC_UNUSED inline unsigned int
  _hb_popcount32 (uint32_t mask)
  {
  #if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)
      return __builtin_popcount (mask);
  #else
      register uint32_t y;
  
      y = (mask >> 1) &033333333333;
      y = mask - y - ((y >>1) & 033333333333);
      return (((y + (y >> 3)) & 030707070707) % 077);
  #endif
  }
  
  
  /* Multiplies a 16dot16 value by another value, then truncates the result */
  #define _hb_16dot16_mul_trunc(A,B) ((int64_t) (A) * (B) / 0x10000)
  
  #include "hb-object-private.h"
  
  #endif /* HB_PRIVATE_H */
  

Download