mirror of
https://github.com/brl/mutter.git
synced 2024-11-25 09:30:45 -05:00
d2c41502a4
This commit pushes --disable-glib to the extreme of embedding the par of glib cogl depends on in tree to be able to generate a DSO that does not depend on an external glib. To do so, it: - keeps a lot of glib's configure.ac in as-glibconfig.m4 - pulls the code cogl depends on and the necessary dependencies Reviewed-by: Robert Bragg <robert@linux.intel.com>
291 lines
9.6 KiB
C
291 lines
9.6 KiB
C
/* GLIB - Library of useful routines for C programming
|
|
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the
|
|
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
* Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
/*
|
|
* Modified by the GLib Team and others 1997-2000. See the AUTHORS
|
|
* file for a list of people on the GLib Team. See the ChangeLog
|
|
* files for a list of changes. These files are distributed with
|
|
* GLib at ftp://ftp.gtk.org/pub/gtk/.
|
|
*/
|
|
|
|
/* This file must not include any other glib header file and must thus
|
|
* not refer to variables from glibconfig.h
|
|
*/
|
|
|
|
#if defined(G_DISABLE_SINGLE_INCLUDES) && !defined (__GLIB_H_INSIDE__) && !defined (GLIB_COMPILATION)
|
|
#error "Only <glib.h> can be included directly."
|
|
#endif
|
|
|
|
#ifndef __G_MACROS_H__
|
|
#define __G_MACROS_H__
|
|
|
|
/* We include stddef.h to get the system's definition of NULL
|
|
*/
|
|
#include <stddef.h>
|
|
|
|
/* Here we provide G_GNUC_EXTENSION as an alias for __extension__,
|
|
* where this is valid. This allows for warningless compilation of
|
|
* "long long" types even in the presence of '-ansi -pedantic'.
|
|
*/
|
|
#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 8)
|
|
# define G_GNUC_EXTENSION __extension__
|
|
#else
|
|
# define G_GNUC_EXTENSION
|
|
#endif
|
|
|
|
/* Provide macros to feature the GCC function attribute.
|
|
*/
|
|
#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 96)
|
|
#define G_GNUC_PURE \
|
|
__attribute__((__pure__))
|
|
#define G_GNUC_MALLOC \
|
|
__attribute__((__malloc__))
|
|
#else
|
|
#define G_GNUC_PURE
|
|
#define G_GNUC_MALLOC
|
|
#endif
|
|
|
|
#if __GNUC__ >= 4
|
|
#define G_GNUC_NULL_TERMINATED __attribute__((__sentinel__))
|
|
#else
|
|
#define G_GNUC_NULL_TERMINATED
|
|
#endif
|
|
|
|
#if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)
|
|
#define G_GNUC_ALLOC_SIZE(x) __attribute__((__alloc_size__(x)))
|
|
#define G_GNUC_ALLOC_SIZE2(x,y) __attribute__((__alloc_size__(x,y)))
|
|
#else
|
|
#define G_GNUC_ALLOC_SIZE(x)
|
|
#define G_GNUC_ALLOC_SIZE2(x,y)
|
|
#endif
|
|
|
|
#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ > 4)
|
|
#define G_GNUC_PRINTF( format_idx, arg_idx ) \
|
|
__attribute__((__format__ (__printf__, format_idx, arg_idx)))
|
|
#define G_GNUC_SCANF( format_idx, arg_idx ) \
|
|
__attribute__((__format__ (__scanf__, format_idx, arg_idx)))
|
|
#define G_GNUC_FORMAT( arg_idx ) \
|
|
__attribute__((__format_arg__ (arg_idx)))
|
|
#define G_GNUC_NORETURN \
|
|
__attribute__((__noreturn__))
|
|
#define G_GNUC_CONST \
|
|
__attribute__((__const__))
|
|
#define G_GNUC_UNUSED \
|
|
__attribute__((__unused__))
|
|
#define G_GNUC_NO_INSTRUMENT \
|
|
__attribute__((__no_instrument_function__))
|
|
#else /* !__GNUC__ */
|
|
#define G_GNUC_PRINTF( format_idx, arg_idx )
|
|
#define G_GNUC_SCANF( format_idx, arg_idx )
|
|
#define G_GNUC_FORMAT( arg_idx )
|
|
#define G_GNUC_NORETURN
|
|
#define G_GNUC_CONST
|
|
#define G_GNUC_UNUSED
|
|
#define G_GNUC_NO_INSTRUMENT
|
|
#endif /* !__GNUC__ */
|
|
|
|
#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1)
|
|
#define G_GNUC_DEPRECATED \
|
|
__attribute__((__deprecated__))
|
|
#else
|
|
#define G_GNUC_DEPRECATED
|
|
#endif /* __GNUC__ */
|
|
|
|
#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5)
|
|
#define G_GNUC_DEPRECATED_FOR(f) \
|
|
__attribute__((deprecated("Use " #f " instead")))
|
|
#else
|
|
#define G_GNUC_DEPRECATED_FOR(f) G_GNUC_DEPRECATED
|
|
#endif /* __GNUC__ */
|
|
|
|
#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 3)
|
|
# define G_GNUC_MAY_ALIAS __attribute__((may_alias))
|
|
#else
|
|
# define G_GNUC_MAY_ALIAS
|
|
#endif
|
|
|
|
#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)
|
|
#define G_GNUC_WARN_UNUSED_RESULT \
|
|
__attribute__((warn_unused_result))
|
|
#else
|
|
#define G_GNUC_WARN_UNUSED_RESULT
|
|
#endif /* __GNUC__ */
|
|
|
|
#ifndef G_DISABLE_DEPRECATED
|
|
/* Wrap the gcc __PRETTY_FUNCTION__ and __FUNCTION__ variables with
|
|
* macros, so we can refer to them as strings unconditionally.
|
|
* usage not-recommended since gcc-3.0
|
|
*/
|
|
#if defined (__GNUC__) && (__GNUC__ < 3)
|
|
#define G_GNUC_FUNCTION __FUNCTION__
|
|
#define G_GNUC_PRETTY_FUNCTION __PRETTY_FUNCTION__
|
|
#else /* !__GNUC__ */
|
|
#define G_GNUC_FUNCTION ""
|
|
#define G_GNUC_PRETTY_FUNCTION ""
|
|
#endif /* !__GNUC__ */
|
|
#endif /* !G_DISABLE_DEPRECATED */
|
|
|
|
#define G_STRINGIFY(macro_or_string) G_STRINGIFY_ARG (macro_or_string)
|
|
#define G_STRINGIFY_ARG(contents) #contents
|
|
|
|
#ifndef __GI_SCANNER__ /* The static assert macro really confuses the introspection parser */
|
|
#define G_PASTE_ARGS(identifier1,identifier2) identifier1 ## identifier2
|
|
#define G_PASTE(identifier1,identifier2) G_PASTE_ARGS (identifier1, identifier2)
|
|
#ifdef __COUNTER__
|
|
#define G_STATIC_ASSERT(expr) typedef char G_PASTE (_GStaticAssertCompileTimeAssertion_, __COUNTER__)[(expr) ? 1 : -1]
|
|
#else
|
|
#define G_STATIC_ASSERT(expr) typedef char G_PASTE (_GStaticAssertCompileTimeAssertion_, __LINE__)[(expr) ? 1 : -1]
|
|
#endif
|
|
#define G_STATIC_ASSERT_EXPR(expr) ((void) sizeof (char[(expr) ? 1 : -1]))
|
|
#endif
|
|
|
|
/* Provide a string identifying the current code position */
|
|
#if defined(__GNUC__) && (__GNUC__ < 3) && !defined(__cplusplus)
|
|
# define G_STRLOC __FILE__ ":" G_STRINGIFY (__LINE__) ":" __PRETTY_FUNCTION__ "()"
|
|
#else
|
|
# define G_STRLOC __FILE__ ":" G_STRINGIFY (__LINE__)
|
|
#endif
|
|
|
|
/* Provide a string identifying the current function, non-concatenatable */
|
|
#if defined (__GNUC__)
|
|
# define G_STRFUNC ((const char*) (__PRETTY_FUNCTION__))
|
|
#elif defined (__STDC_VERSION__) && __STDC_VERSION__ >= 19901L
|
|
# define G_STRFUNC ((const char*) (__func__))
|
|
#else
|
|
# define G_STRFUNC ((const char*) ("???"))
|
|
#endif
|
|
|
|
/* Guard C code in headers, while including them from C++ */
|
|
#ifdef __cplusplus
|
|
# define G_BEGIN_DECLS extern "C" {
|
|
# define G_END_DECLS }
|
|
#else
|
|
# define G_BEGIN_DECLS
|
|
# define G_END_DECLS
|
|
#endif
|
|
|
|
/* Provide definitions for some commonly used macros.
|
|
* Some of them are only provided if they haven't already
|
|
* been defined. It is assumed that if they are already
|
|
* defined then the current definition is correct.
|
|
*/
|
|
#ifndef NULL
|
|
# ifdef __cplusplus
|
|
# define NULL (0L)
|
|
# else /* !__cplusplus */
|
|
# define NULL ((void*) 0)
|
|
# endif /* !__cplusplus */
|
|
#endif
|
|
|
|
#ifndef FALSE
|
|
#define FALSE (0)
|
|
#endif
|
|
|
|
#ifndef TRUE
|
|
#define TRUE (!FALSE)
|
|
#endif
|
|
|
|
#undef MAX
|
|
#define MAX(a, b) (((a) > (b)) ? (a) : (b))
|
|
|
|
#undef MIN
|
|
#define MIN(a, b) (((a) < (b)) ? (a) : (b))
|
|
|
|
#undef ABS
|
|
#define ABS(a) (((a) < 0) ? -(a) : (a))
|
|
|
|
#undef CLAMP
|
|
#define CLAMP(x, low, high) (((x) > (high)) ? (high) : (((x) < (low)) ? (low) : (x)))
|
|
|
|
/* Count the number of elements in an array. The array must be defined
|
|
* as such; using this with a dynamically allocated array will give
|
|
* incorrect results.
|
|
*/
|
|
#define G_N_ELEMENTS(arr) (sizeof (arr) / sizeof ((arr)[0]))
|
|
|
|
/* Macros by analogy to GINT_TO_POINTER, GPOINTER_TO_INT
|
|
*/
|
|
#define GPOINTER_TO_SIZE(p) ((gsize) (p))
|
|
#define GSIZE_TO_POINTER(s) ((gpointer) (gsize) (s))
|
|
|
|
/* Provide convenience macros for handling structure
|
|
* fields through their offsets.
|
|
*/
|
|
|
|
#if defined(__GNUC__) && __GNUC__ >= 4
|
|
# define G_STRUCT_OFFSET(struct_type, member) \
|
|
((glong) offsetof (struct_type, member))
|
|
#else
|
|
# define G_STRUCT_OFFSET(struct_type, member) \
|
|
((glong) ((guint8*) &((struct_type*) 0)->member))
|
|
#endif
|
|
|
|
#define G_STRUCT_MEMBER_P(struct_p, struct_offset) \
|
|
((gpointer) ((guint8*) (struct_p) + (glong) (struct_offset)))
|
|
#define G_STRUCT_MEMBER(member_type, struct_p, struct_offset) \
|
|
(*(member_type*) G_STRUCT_MEMBER_P ((struct_p), (struct_offset)))
|
|
|
|
/* Provide simple macro statement wrappers:
|
|
* G_STMT_START { statements; } G_STMT_END;
|
|
* This can be used as a single statement, like:
|
|
* if (x) G_STMT_START { ... } G_STMT_END; else ...
|
|
* This intentionally does not use compiler extensions like GCC's '({...})' to
|
|
* avoid portability issue or side effects when compiled with different compilers.
|
|
*/
|
|
#if !(defined (G_STMT_START) && defined (G_STMT_END))
|
|
# define G_STMT_START do
|
|
# define G_STMT_END while (0)
|
|
#endif
|
|
|
|
/* Deprecated -- do not use. */
|
|
#ifndef G_DISABLE_DEPRECATED
|
|
#ifdef G_DISABLE_CONST_RETURNS
|
|
#define G_CONST_RETURN
|
|
#else
|
|
#define G_CONST_RETURN const
|
|
#endif
|
|
#endif
|
|
|
|
/*
|
|
* The G_LIKELY and G_UNLIKELY macros let the programmer give hints to
|
|
* the compiler about the expected result of an expression. Some compilers
|
|
* can use this information for optimizations.
|
|
*
|
|
* The _G_BOOLEAN_EXPR macro is intended to trigger a gcc warning when
|
|
* putting assignments in g_return_if_fail ().
|
|
*/
|
|
#if defined(__GNUC__) && (__GNUC__ > 2) && defined(__OPTIMIZE__)
|
|
#define _G_BOOLEAN_EXPR(expr) \
|
|
G_GNUC_EXTENSION ({ \
|
|
int _g_boolean_var_; \
|
|
if (expr) \
|
|
_g_boolean_var_ = 1; \
|
|
else \
|
|
_g_boolean_var_ = 0; \
|
|
_g_boolean_var_; \
|
|
})
|
|
#define G_LIKELY(expr) (__builtin_expect (_G_BOOLEAN_EXPR(expr), 1))
|
|
#define G_UNLIKELY(expr) (__builtin_expect (_G_BOOLEAN_EXPR(expr), 0))
|
|
#else
|
|
#define G_LIKELY(expr) (expr)
|
|
#define G_UNLIKELY(expr) (expr)
|
|
#endif
|
|
|
|
#endif /* __G_MACROS_H__ */
|