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