PulseAudio
14.0-rebootstrapped
gccmacro.h
Go to the documentation of this file.
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#ifndef foopulsegccmacrohfoo
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#define foopulsegccmacrohfoo
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/***
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This file is part of PulseAudio.
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Copyright 2004-2006 Lennart Poettering
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PulseAudio is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published
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by the Free Software Foundation; either version 2.1 of the License,
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or (at your option) any later version.
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PulseAudio is distributed in the hope that it will be useful, but
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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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General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
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***/
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#if defined(__GNUC__)
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#ifdef __MINGW32__
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/* libintl overrides printf with a #define. As this breaks this attribute,
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* it has a workaround. However the workaround isn't enabled for MINGW
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* builds (only cygwin) */
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#define PA_GCC_PRINTF_ATTR(a,b) __attribute__ ((format (__printf__, a, b)))
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#else
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#define PA_GCC_PRINTF_ATTR(a,b) __attribute__ ((format (printf, a, b)))
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#endif
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#else
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#define PA_GCC_PRINTF_ATTR(a,b)
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#endif
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#if defined(__GNUC__) && (__GNUC__ >= 4)
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#define PA_GCC_SENTINEL __attribute__ ((sentinel))
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#else
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#define PA_GCC_SENTINEL
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#endif
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#ifdef __GNUC__
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#define PA_GCC_NORETURN __attribute__((noreturn))
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#else
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#define PA_GCC_NORETURN
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#endif
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#ifdef __GNUC__
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#define PA_GCC_UNUSED __attribute__ ((unused))
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#else
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#define PA_GCC_UNUSED
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#endif
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#ifdef __GNUC__
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#define PA_GCC_DESTRUCTOR __attribute__ ((destructor))
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#else
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#define PA_GCC_DESTRUCTOR
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#endif
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#ifndef PA_GCC_PURE
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#ifdef __GNUC__
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#define PA_GCC_PURE __attribute__ ((pure))
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#else
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#define PA_GCC_PURE
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#endif
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#endif
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#ifndef PA_GCC_CONST
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#ifdef __GNUC__
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#define PA_GCC_CONST __attribute__ ((const))
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#else
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#define PA_GCC_CONST
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#endif
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#endif
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#ifndef PA_GCC_DEPRECATED
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#ifdef __GNUC__
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#define PA_GCC_DEPRECATED __attribute__ ((deprecated))
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#else
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#define PA_GCC_DEPRECATED
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#endif
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#endif
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#ifndef PA_GCC_PACKED
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#ifdef __GNUC__
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#define PA_GCC_PACKED __attribute__ ((packed))
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#else
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#define PA_GCC_PACKED
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#endif
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#endif
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#ifndef PA_GCC_ALLOC_SIZE
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#if defined(__GNUC__) && (__GNUC__ >= 4) && (__GNUC_MINOR__ >= 3)
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#define PA_GCC_ALLOC_SIZE(x) __attribute__ ((__alloc_size__(x)))
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#define PA_GCC_ALLOC_SIZE2(x,y) __attribute__ ((__alloc_size__(x,y)))
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#else
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#define PA_GCC_ALLOC_SIZE(x)
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#define PA_GCC_ALLOC_SIZE2(x,y)
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#endif
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#endif
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#ifndef PA_GCC_MALLOC
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#ifdef __GNUC__
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#define PA_GCC_MALLOC __attribute__ ((malloc))
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#else
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#define PA_GCC_MALLOC
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#endif
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#endif
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#ifndef PA_GCC_WEAKREF
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#if defined(__GNUC__) && defined(__ELF__) && (((__GNUC__ == 4) && (__GNUC_MINOR__ > 1)) || (__GNUC__ > 4))
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#define PA_GCC_WEAKREF(x) __attribute__((weakref(#x)))
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#endif
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#endif
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#ifndef PA_LIKELY
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#ifdef __GNUC__
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#define PA_LIKELY(x) (__builtin_expect(!!(x),1))
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#define PA_UNLIKELY(x) (__builtin_expect(!!(x),0))
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#else
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#define PA_LIKELY(x) (x)
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#define PA_UNLIKELY(x) (x)
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#endif
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#endif
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#ifdef __GNUC__
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#define PA_CLAMP(x, low, high) \
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__extension__ ({ \
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typeof(x) _x = (x); \
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typeof(low) _low = (low); \
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typeof(high) _high = (high); \
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((_x > _high) ? _high : ((_x < _low) ? _low : _x)); \
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})
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#else
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#define PA_CLAMP(x, low, high) (((x) > (high)) ? (high) : (((x) < (low)) ? (low) : (x)))
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#endif
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#ifdef __GNUC__
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#define PA_CLAMP_UNLIKELY(x, low, high) \
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__extension__ ({ \
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typeof(x) _x = (x); \
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typeof(low) _low = (low); \
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typeof(high) _high = (high); \
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(PA_UNLIKELY(_x > _high) ? _high : (PA_UNLIKELY(_x < _low) ? _low : _x)); \
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})
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#else
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#define PA_CLAMP_UNLIKELY(x, low, high) (PA_UNLIKELY((x) > (high)) ? (high) : (PA_UNLIKELY((x) < (low)) ? (low) : (x)))
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#endif
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/* We don't define a PA_CLAMP_LIKELY here, because it doesn't really
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* make sense: we cannot know if it is more likely that the value is
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* lower or greater than the boundaries. */
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#endif
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pulse
gccmacro.h
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