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|
#ifndef foopulsemacrohfoo
#define foopulsemacrohfoo
/***
This file is part of PulseAudio.
Copyright 2004-2006 Lennart Poettering
PulseAudio 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 2.1 of the License,
or (at your option) any later version.
PulseAudio 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
General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with PulseAudio; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
***/
#include <sys/types.h>
#include <unistd.h>
#include <assert.h>
#include <limits.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifndef PACKAGE
#error "Please include config.h before including this file!"
#endif
#ifndef PA_LIKELY
#ifdef __GNUC__
#define PA_LIKELY(x) (__builtin_expect(!!(x),1))
#define PA_UNLIKELY(x) (__builtin_expect(!!(x),0))
#else
#define PA_LIKELY(x) (x)
#define PA_UNLIKELY(x) (x)
#endif
#endif
#if defined(PAGE_SIZE)
#define PA_PAGE_SIZE ((size_t) PAGE_SIZE)
#elif defined(PAGESIZE)
#define PA_PAGE_SIZE ((size_t) PAGESIZE)
#elif defined(HAVE_SYSCONF)
#define PA_PAGE_SIZE ((size_t) (sysconf(_SC_PAGE_SIZE)))
#else
/* Let's hope it's like x86. */
#define PA_PAGE_SIZE ((size_t) 4096)
#endif
/* Rounds down */
static inline void* PA_ALIGN_PTR(const void *p) {
return (void*) (((size_t) p) & ~(sizeof(void*) - 1));
}
/* Rounds up */
static inline size_t PA_ALIGN(size_t l) {
return ((l + sizeof(void*) - 1) & ~(sizeof(void*) - 1));
}
/* Rounds down */
static inline void* PA_PAGE_ALIGN_PTR(const void *p) {
return (void*) (((size_t) p) & ~(PA_PAGE_SIZE - 1));
}
/* Rounds up */
static inline size_t PA_PAGE_ALIGN(size_t l) {
return (l + PA_PAGE_SIZE - 1) & ~(PA_PAGE_SIZE - 1);
}
#define PA_ELEMENTSOF(x) (sizeof(x)/sizeof((x)[0]))
#if defined(__GNUC__)
#define PA_DECLARE_ALIGNED(n,t,v) t v __attribute__ ((aligned (n)))
#else
#define PA_DECLARE_ALIGNED(n,t,v) t v
#endif
#ifdef __GNUC__
#define typeof __typeof__
#endif
/* The users of PA_MIN and PA_MAX, PA_CLAMP, PA_ROUND_UP should be
* aware that these macros on non-GCC executed code with side effects
* twice. It is thus considered misuse to use code with side effects
* as arguments to MIN and MAX. */
#ifdef __GNUC__
#define PA_MAX(a,b) \
__extension__ ({ \
typeof(a) _a = (a); \
typeof(b) _b = (b); \
_a > _b ? _a : _b; \
})
#else
#define PA_MAX(a, b) ((a) > (b) ? (a) : (b))
#endif
#ifdef __GNUC__
#define PA_MIN(a,b) \
__extension__ ({ \
typeof(a) _a = (a); \
typeof(b) _b = (b); \
_a < _b ? _a : _b; \
})
#else
#define PA_MIN(a, b) ((a) < (b) ? (a) : (b))
#endif
#ifdef __GNUC__
#define PA_CLAMP(x, low, high) \
__extension__ ({ \
typeof(x) _x = (x); \
typeof(low) _low = (low); \
typeof(high) _high = (high); \
((_x > _high) ? _high : ((_x < _low) ? _low : _x)); \
})
#else
#define PA_CLAMP(x, low, high) (((x) > (high)) ? (high) : (((x) < (low)) ? (low) : (x)))
#endif
#ifdef __GNUC__
#define PA_CLAMP_UNLIKELY(x, low, high) \
__extension__ ({ \
typeof(x) _x = (x); \
typeof(low) _low = (low); \
typeof(high) _high = (high); \
(PA_UNLIKELY(_x > _high) ? _high : (PA_UNLIKELY(_x < _low) ? _low : _x)); \
})
#else
#define PA_CLAMP_UNLIKELY(x, low, high) (PA_UNLIKELY((x) > (high)) ? (high) : (PA_UNLIKELY((x) < (low)) ? (low) : (x)))
#endif
/* We don't define a PA_CLAMP_LIKELY here, because it doesn't really
* make sense: we cannot know if it is more likely that the values is
* lower or greater than the boundaries.*/
#ifdef __GNUC__
#define PA_ROUND_UP(a, b) \
__extension__ ({ \
typeof(a) _a = (a); \
typeof(b) _b = (b); \
((_a + _b - 1) / _b) * _b; \
})
#else
#define PA_ROUND_UP(a, b) ((((a) + (b) - 1) / (b)) * (b))
#endif
#ifdef __GNUC__
#define PA_ROUND_DOWN(a, b) \
__extension__ ({ \
typeof(a) _a = (a); \
typeof(b) _b = (b); \
(_a / _b) * _b; \
})
#else
#define PA_ROUND_DOWN(a, b) (((a) / (b)) * (b))
#endif
#ifdef __GNUC__
#define PA_CLIP_SUB(a, b) \
__extension__ ({ \
typeof(a) _a = (a); \
typeof(b) _b = (b); \
_a > _b ? _a - _b : 0; \
})
#else
#define PA_CLIP_SUB(a, b) ((a) > (b) ? (a) - (b) : 0)
#endif
/* This type is not intended to be used in exported APIs! Use classic "int" there! */
#ifdef HAVE_STD_BOOL
typedef _Bool pa_bool_t;
#else
typedef int pa_bool_t;
#endif
#ifndef FALSE
#define FALSE ((pa_bool_t) 0)
#endif
#ifndef TRUE
#define TRUE (!FALSE)
#endif
#ifdef __GNUC__
#define PA_PRETTY_FUNCTION __PRETTY_FUNCTION__
#else
#define PA_PRETTY_FUNCTION ""
#endif
#define pa_return_if_fail(expr) \
do { \
if (PA_UNLIKELY(!(expr))) { \
pa_log_debug("Assertion '%s' failed at %s:%u, function %s.\n", #expr , __FILE__, __LINE__, PA_PRETTY_FUNCTION); \
return; \
} \
} while(FALSE)
#define pa_return_val_if_fail(expr, val) \
do { \
if (PA_UNLIKELY(!(expr))) { \
pa_log_debug("Assertion '%s' failed at %s:%u, function %s.\n", #expr , __FILE__, __LINE__, PA_PRETTY_FUNCTION); \
return (val); \
} \
} while(FALSE)
#define pa_return_null_if_fail(expr) pa_return_val_if_fail(expr, NULL)
/* pa_assert_se() is an assert which guarantees side effects of x,
* i.e. is never optimized away, regardless of NDEBUG or FASTPATH. */
#define pa_assert_se(expr) \
do { \
if (PA_UNLIKELY(!(expr))) { \
pa_log_error("Assertion '%s' failed at %s:%u, function %s(). Aborting.", #expr , __FILE__, __LINE__, PA_PRETTY_FUNCTION); \
abort(); \
} \
} while (FALSE)
/* Does exactly nothing */
#define pa_nop() do {} while (FALSE)
/* pa_assert() is an assert that may be optimized away by defining
* NDEBUG. pa_assert_fp() is an assert that may be optimized away by
* defining FASTPATH. It is supposed to be used in inner loops. It's
* there for extra paranoia checking and should probably be removed in
* production builds. */
#ifdef NDEBUG
#define pa_assert(expr) pa_nop()
#define pa_assert_fp(expr) pa_nop()
#elif defined (FASTPATH)
#define pa_assert(expr) pa_assert_se(expr)
#define pa_assert_fp(expr) pa_nop()
#else
#define pa_assert(expr) pa_assert_se(expr)
#define pa_assert_fp(expr) pa_assert_se(expr)
#endif
#ifdef NDEBUG
#define pa_assert_not_reached() pa_nop()
#else
#define pa_assert_not_reached() \
do { \
pa_log_error("Code should not be reached at %s:%u, function %s(). Aborting.", __FILE__, __LINE__, PA_PRETTY_FUNCTION); \
abort(); \
} while (FALSE)
#endif
/* A compile time assertion */
#define pa_assert_cc(expr) \
do { \
switch (0) { \
case 0: \
case !!(expr): \
; \
} \
} while (FALSE)
#define PA_PTR_TO_UINT(p) ((unsigned int) ((uintptr_t) (p)))
#define PA_UINT_TO_PTR(u) ((void*) ((uintptr_t) (u)))
#define PA_PTR_TO_UINT32(p) ((uint32_t) ((uintptr_t) (p)))
#define PA_UINT32_TO_PTR(u) ((void*) ((uintptr_t) (u)))
#define PA_PTR_TO_INT(p) ((int) ((intptr_t) (p)))
#define PA_INT_TO_PTR(u) ((void*) ((intptr_t) (u)))
#define PA_PTR_TO_INT32(p) ((int32_t) ((intptr_t) (p)))
#define PA_INT32_TO_PTR(u) ((void*) ((intptr_t) (u)))
#ifdef OS_IS_WIN32
#define PA_PATH_SEP "\\"
#define PA_PATH_SEP_CHAR '\\'
#else
#define PA_PATH_SEP "/"
#define PA_PATH_SEP_CHAR '/'
#endif
#if defined(__GNUC__) && defined(__ELF__)
#define PA_WARN_REFERENCE(sym, msg) \
__asm__(".section .gnu.warning." #sym); \
__asm__(".asciz \"" msg "\""); \
__asm__(".previous")
#else
#define PA_WARN_REFERENCE(sym, msg)
#endif
#if defined(__i386__) || defined(__x86_64__)
#define PA_DEBUG_TRAP __asm__("int $3")
#else
#define PA_DEBUG_TRAP raise(SIGTRAP)
#endif
#define pa_memzero(x,l) (memset((x), 0, (l)))
#define pa_zero(x) (pa_memzero(&(x), sizeof(x)))
#define PA_INT_TYPE_SIGNED(type) (!!((type) 0 > (type) -1))
#define PA_INT_TYPE_MAX(type) \
((type) (PA_INT_TYPE_SIGNED(type) \
? ~(~(type) 0 << (8*sizeof(type)-1)) \
: (type) -1))
#define PA_INT_TYPE_MIN(type) \
((type) (PA_INT_TYPE_SIGNED(type) \
? (~(type) 0 << (8*sizeof(type)-1)) \
: (type) 0))
/* We include this at the very last place */
#include <pulsecore/log.h>
#endif
|
