author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Mon, 04 Oct 2010 02:56:42 +0300 | |
changeset 68 | ff3fc7722556 |
parent 18 | 47c74d1534e1 |
permissions | -rw-r--r-- |
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/* GLIB - Library of useful routines for C programming |
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald |
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* Portions copyright (c) 2006-2009 Nokia Corporation. All rights reserved. |
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* This library is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2 of the License, or (at your option) any later version. |
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* |
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* This library is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with this library; if not, write to the |
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
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* Boston, MA 02111-1307, USA. |
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*/ |
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|
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/* |
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* Modified by the GLib Team and others 1997-2000. See the AUTHORS |
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* file for a list of people on the GLib Team. See the ChangeLog |
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* files for a list of changes. These files are distributed with |
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* GLib at ftp://ftp.gtk.org/pub/gtk/. |
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*/ |
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/* This file must not include any other glib header file and must thus |
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* not refer to variables from glibconfig.h |
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*/ |
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#if defined(G_DISABLE_SINGLE_INCLUDES) && !defined (__GLIB_H_INSIDE__) && !defined (GLIB_COMPILATION) |
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#error "Only <glib.h> can be included directly." |
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#endif |
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#ifndef __G_MACROS_H__ |
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#define __G_MACROS_H__ |
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/* We include stddef.h to get the system's definition of NULL |
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*/ |
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#include <stddef.h> |
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/* Here we provide G_GNUC_EXTENSION as an alias for __extension__, |
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* where this is valid. This allows for warningless compilation of |
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* "long long" types even in the presence of '-ansi -pedantic'. |
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*/ |
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#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 8) |
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# define G_GNUC_EXTENSION __extension__ |
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#else |
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# define G_GNUC_EXTENSION |
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#endif |
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/* Provide macros to feature the GCC function attribute. |
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*/ |
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#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 96) |
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#define G_GNUC_PURE \ |
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__attribute__((__pure__)) |
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#define G_GNUC_MALLOC \ |
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__attribute__((__malloc__)) |
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#else |
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#define G_GNUC_PURE |
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#define G_GNUC_MALLOC |
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#endif |
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#if __GNUC__ >= 4 |
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#define G_GNUC_NULL_TERMINATED __attribute__((__sentinel__)) |
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#else |
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#define G_GNUC_NULL_TERMINATED |
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#endif |
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#if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3) |
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#define G_GNUC_ALLOC_SIZE(x) __attribute__((__alloc_size__(x))) |
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#define G_GNUC_ALLOC_SIZE2(x,y) __attribute__((__alloc_size__(x,y))) |
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#else |
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#define G_GNUC_ALLOC_SIZE(x) |
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#define G_GNUC_ALLOC_SIZE2(x,y) |
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#endif |
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#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ > 4) |
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#define G_GNUC_PRINTF( format_idx, arg_idx ) \ |
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__attribute__((__format__ (__printf__, format_idx, arg_idx))) |
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#define G_GNUC_SCANF( format_idx, arg_idx ) \ |
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__attribute__((__format__ (__scanf__, format_idx, arg_idx))) |
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#define G_GNUC_FORMAT( arg_idx ) \ |
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__attribute__((__format_arg__ (arg_idx))) |
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#define G_GNUC_NORETURN \ |
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__attribute__((__noreturn__)) |
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#define G_GNUC_CONST \ |
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__attribute__((__const__)) |
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#define G_GNUC_UNUSED \ |
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__attribute__((__unused__)) |
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#define G_GNUC_NO_INSTRUMENT \ |
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__attribute__((__no_instrument_function__)) |
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#else /* !__GNUC__ */ |
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#define G_GNUC_PRINTF( format_idx, arg_idx ) |
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#define G_GNUC_SCANF( format_idx, arg_idx ) |
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#define G_GNUC_FORMAT( arg_idx ) |
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#define G_GNUC_NORETURN |
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#define G_GNUC_CONST |
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#define G_GNUC_UNUSED |
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#define G_GNUC_NO_INSTRUMENT |
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#endif /* !__GNUC__ */ |
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102 |
|
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#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1) |
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#define G_GNUC_DEPRECATED \ |
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__attribute__((__deprecated__)) |
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#else |
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#define G_GNUC_DEPRECATED |
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#endif /* __GNUC__ */ |
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109 |
|
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#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 3) |
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# define G_GNUC_MAY_ALIAS __attribute__((may_alias)) |
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#else |
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# define G_GNUC_MAY_ALIAS |
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#endif |
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115 |
|
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#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) |
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#define G_GNUC_WARN_UNUSED_RESULT \ |
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__attribute__((warn_unused_result)) |
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#else |
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#define G_GNUC_WARN_UNUSED_RESULT |
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#endif /* __GNUC__ */ |
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122 |
|
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#ifndef G_DISABLE_DEPRECATED |
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/* Wrap the gcc __PRETTY_FUNCTION__ and __FUNCTION__ variables with |
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* macros, so we can refer to them as strings unconditionally. |
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* usage not-recommended since gcc-3.0 |
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*/ |
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#if defined (__GNUC__) && (__GNUC__ < 3) |
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#define G_GNUC_FUNCTION __FUNCTION__ |
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#define G_GNUC_PRETTY_FUNCTION __PRETTY_FUNCTION__ |
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#else /* !__GNUC__ */ |
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#define G_GNUC_FUNCTION "" |
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#define G_GNUC_PRETTY_FUNCTION "" |
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#endif /* !__GNUC__ */ |
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#endif /* !G_DISABLE_DEPRECATED */ |
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136 |
|
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#define G_STRINGIFY(macro_or_string) G_STRINGIFY_ARG (macro_or_string) |
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#define G_STRINGIFY_ARG(contents) #contents |
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139 |
|
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#define G_PASTE_ARGS(identifier1,identifier2) identifier1 ## identifier2 |
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#define G_PASTE(identifier1,identifier2) G_PASTE_ARGS (identifier1, identifier2) |
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#define G_STATIC_ASSERT(expr) typedef struct { char Compile_Time_Assertion[(expr) ? 1 : -1]; } G_PASTE (_GStaticAssert_, __LINE__) |
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143 |
|
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/* Provide a string identifying the current code position */ |
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#if defined(__GNUC__) && (__GNUC__ < 3) && !defined(__cplusplus) |
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# define G_STRLOC __FILE__ ":" G_STRINGIFY (__LINE__) ":" __PRETTY_FUNCTION__ "()" |
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#else |
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# define G_STRLOC __FILE__ ":" G_STRINGIFY (__LINE__) |
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#endif |
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150 |
|
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/* Provide a string identifying the current function, non-concatenatable */ |
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#if defined (__GNUC__) |
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# define G_STRFUNC ((const char*) (__PRETTY_FUNCTION__)) |
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#elif defined (__STDC_VERSION__) && __STDC_VERSION__ >= 19901L |
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# define G_STRFUNC ((const char*) (__func__)) |
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#else |
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# define G_STRFUNC ((const char*) ("???")) |
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#endif |
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159 |
|
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/* Guard C code in headers, while including them from C++ */ |
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#ifdef __cplusplus |
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# define G_BEGIN_DECLS extern "C" { |
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# define G_END_DECLS } |
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#else |
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# define G_BEGIN_DECLS |
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# define G_END_DECLS |
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#endif |
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168 |
|
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/* Provide definitions for some commonly used macros. |
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* Some of them are only provided if they haven't already |
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* been defined. It is assumed that if they are already |
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* defined then the current definition is correct. |
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*/ |
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#ifndef NULL |
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# ifdef __cplusplus |
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# define NULL (0L) |
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# else /* !__cplusplus */ |
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# define NULL ((void*) 0) |
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# endif /* !__cplusplus */ |
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#endif |
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181 |
|
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#ifndef __SYMBIAN32__ |
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#ifndef FALSE |
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#define FALSE (0) |
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#endif |
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|
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#ifndef TRUE |
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#define TRUE (!FALSE) |
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#endif |
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#endif//__SYMBIAN32__ |
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191 |
|
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#undef MAX |
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#define MAX(a, b) (((a) > (b)) ? (a) : (b)) |
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|
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#undef MIN |
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#define MIN(a, b) (((a) < (b)) ? (a) : (b)) |
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|
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#undef ABS |
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#define ABS(a) (((a) < 0) ? -(a) : (a)) |
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200 |
|
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#undef CLAMP |
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#define CLAMP(x, low, high) (((x) > (high)) ? (high) : (((x) < (low)) ? (low) : (x))) |
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/* Count the number of elements in an array. The array must be defined |
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* as such; using this with a dynamically allocated array will give |
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* incorrect results. |
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*/ |
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#define G_N_ELEMENTS(arr) (sizeof (arr) / sizeof ((arr)[0])) |
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/* Macros by analogy to GINT_TO_POINTER, GPOINTER_TO_INT |
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*/ |
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#define GPOINTER_TO_SIZE(p) ((gsize) (p)) |
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#define GSIZE_TO_POINTER(s) ((gpointer) (gsize) (s)) |
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/* Provide convenience macros for handling structure |
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* fields through their offsets. |
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*/ |
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#if defined(__GNUC__) && __GNUC__ >= 4 |
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# define G_STRUCT_OFFSET(struct_type, member) \ |
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((glong) offsetof (struct_type, member)) |
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#else |
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# define G_STRUCT_OFFSET(struct_type, member) \ |
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((glong) ((guint8*) &((struct_type*) 0)->member)) |
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#endif |
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#define G_STRUCT_MEMBER_P(struct_p, struct_offset) \ |
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((gpointer) ((guint8*) (struct_p) + (glong) (struct_offset))) |
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#define G_STRUCT_MEMBER(member_type, struct_p, struct_offset) \ |
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(*(member_type*) G_STRUCT_MEMBER_P ((struct_p), (struct_offset))) |
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|
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/* Provide simple macro statement wrappers: |
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* G_STMT_START { statements; } G_STMT_END; |
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* This can be used as a single statement, like: |
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* if (x) G_STMT_START { ... } G_STMT_END; else ... |
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* This intentionally does not use compiler extensions like GCC's '({...})' to |
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* avoid portability issue or side effects when compiled with different compilers. |
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*/ |
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#if !(defined (G_STMT_START) && defined (G_STMT_END)) |
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# define G_STMT_START do |
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# define G_STMT_END while (0) |
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#endif |
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|
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/* Allow the app programmer to select whether or not return values |
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* (usually char*) are const or not. Don't try using this feature for |
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* functions with C++ linkage. |
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*/ |
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#ifdef G_DISABLE_CONST_RETURNS |
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#define G_CONST_RETURN |
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#else |
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#define G_CONST_RETURN const |
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#endif |
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/* |
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* The G_LIKELY and G_UNLIKELY macros let the programmer give hints to |
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* the compiler about the expected result of an expression. Some compilers |
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* can use this information for optimizations. |
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* |
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* The _G_BOOLEAN_EXPR macro is intended to trigger a gcc warning when |
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* putting assignments in g_return_if_fail (). |
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*/ |
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#if defined(__GNUC__) && (__GNUC__ > 2) && defined(__OPTIMIZE__) |
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#define _G_BOOLEAN_EXPR(expr) \ |
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__extension__ ({ \ |
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int _g_boolean_var_; \ |
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if (expr) \ |
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_g_boolean_var_ = 1; \ |
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else \ |
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_g_boolean_var_ = 0; \ |
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_g_boolean_var_; \ |
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}) |
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#define G_LIKELY(expr) (__builtin_expect (_G_BOOLEAN_EXPR(expr), 1)) |
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#define G_UNLIKELY(expr) (__builtin_expect (_G_BOOLEAN_EXPR(expr), 0)) |
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#else |
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#define G_LIKELY(expr) (expr) |
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#define G_UNLIKELY(expr) (expr) |
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#endif |
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#endif /* __G_MACROS_H__ */ |