code.delx.au - pulseaudio/blob - src/pulsecore/macro.h

   1 #ifndef foopulsemacrohfoo
   2 #define foopulsemacrohfoo
   3
   4 /* $Id$ */
   5
   6 /***
   7   This file is part of PulseAudio.
   8
   9   Copyright 2004-2006 Lennart Poettering
  10
  11   PulseAudio is free software; you can redistribute it and/or modify
  12   it under the terms of the GNU Lesser General Public License as published
  13   by the Free Software Foundation; either version 2 of the License,
  14   or (at your option) any later version.
  15
  16   PulseAudio is distributed in the hope that it will be useful, but
  17   WITHOUT ANY WARRANTY; without even the implied warranty of
  18   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  19   General Public License for more details.
  20
  21   You should have received a copy of the GNU Lesser General Public License
  22   along with PulseAudio; if not, write to the Free Software
  23   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  24   USA.
  25 ***/
  26
  27 #include <sys/types.h>
  28 #include <unistd.h>
  29 #include <assert.h>
  30 #include <limits.h>
  31 #include <unistd.h>
  32
  33 #include <pulsecore/log.h>
  34 #include <pulsecore/gccmacro.h>
  35
  36 #ifndef PACKAGE
  37 #error "Please include config.h before including this file!"
  38 #endif
  39
  40 #if defined(PAGE_SIZE)
  41 #define PA_PAGE_SIZE ((size_t) PAGE_SIZE)
  42 #elif defined(PAGESIZE)
  43 #define PA_PAGE_SIZE ((size_t) PAGESIZE)
  44 #elif defined(HAVE_SYSCONF)
  45 #define PA_PAGE_SIZE ((size_t) (sysconf(_SC_PAGE_SIZE)))
  46 #else
  47 /* Let's hope it's like x86. */
  48 #define PA_PAGE_SIZE ((size_t) 4096)
  49 #endif
  50
  51 static inline size_t pa_align(size_t l) {
  52     return (((l + sizeof(void*) - 1) / sizeof(void*)) * sizeof(void*));
  53 }
  54 #define PA_ALIGN(x) (pa_align(x))
  55
  56 static inline void* pa_page_align_ptr(const void *p) {
  57     return (void*) (((size_t) p) & ~(PA_PAGE_SIZE-1));
  58 }
  59 #define PA_PAGE_ALIGN_PTR(x) (pa_page_align_ptr(x))
  60
  61 static inline size_t pa_page_align(size_t l) {
  62     return l & ~(PA_PAGE_SIZE-1);
  63 }
  64 #define PA_PAGE_ALIGN(x) (pa_page_align(x))
  65
  66 #define PA_ELEMENTSOF(x) (sizeof(x)/sizeof((x)[0]))
  67
  68 #ifndef MAX
  69 #define MAX(a, b) ((a) > (b) ? (a) : (b))
  70 #endif
  71
  72 #ifndef MIN
  73 #define MIN(a, b) ((a) < (b) ? (a) : (b))
  74 #endif
  75
  76 #ifndef CLAMP
  77 #define CLAMP(x, low, high) (((x) > (high)) ? (high) : (((x) < (low)) ? (low) : (x)))
  78 #endif
  79
  80 #define PA_CLAMP_UNLIKELY(x, low, high) (PA_UNLIKELY((x) > (high)) ? (high) : (PA_UNLIKELY((x) < (low)) ? (low) : (x)))
  81 /* We don't define a PA_CLAMP_LIKELY here, because it doesn't really
  82  * make sense: we cannot know if it is more likely that the values is
  83  * lower or greater than the boundaries.*/
  84
  85 /* This type is not intended to be used in exported APIs! Use classic "int" there! */
  86 #ifdef HAVE_STD_BOOL
  87 typedef _Bool pa_bool_t;
  88 #else
  89 typedef int pa_bool_t;
  90 #endif
  91
  92 #ifndef FALSE
  93 #define FALSE ((pa_bool_t) 0)
  94 #endif
  95
  96 #ifndef TRUE
  97 #define TRUE (!FALSE)
  98 #endif
  99
 100 #ifdef __GNUC__
 101 #define PA_PRETTY_FUNCTION __PRETTY_FUNCTION__
 102 #else
 103 #define PA_PRETTY_FUNCTION ""
 104 #endif
 105
 106 #define pa_return_if_fail(expr) \
 107     do { \
 108         if (!(expr)) { \
 109             pa_log_debug("%s: Assertion <%s> failed.\n", PA_PRETTY_FUNCTION, #expr ); \
 110             return; \
 111         } \
 112     } while(0)
 113
 114 #define pa_return_val_if_fail(expr, val) \
 115     do { \
 116         if (!(expr)) { \
 117             pa_log_debug("%s: Assertion <%s> failed.\n", PA_PRETTY_FUNCTION, #expr ); \
 118             return (val); \
 119         } \
 120     } while(0)
 121
 122 #define pa_return_null_if_fail(expr) pa_return_val_if_fail(expr, NULL)
 123
 124 #define pa_assert assert
 125
 126 #define pa_assert_not_reached() pa_assert(!"Should not be reached.")
 127
 128 /* An assert which guarantees side effects of x */
 129 #ifdef NDEBUG
 130 #define pa_assert_se(x) x
 131 #else
 132 #define pa_assert_se(x) pa_assert(x)
 133 #endif
 134
 135 #define PA_PTR_TO_UINT(p) ((unsigned int) (unsigned long) (p))
 136 #define PA_UINT_TO_PTR(u) ((void*) (unsigned long) (u))
 137
 138 #define PA_PTR_TO_UINT32(p) ((uint32_t) PA_PTR_TO_UINT(p))
 139 #define PA_UINT32_TO_PTR(u) PA_UINT_TO_PTR((uint32_t) u)
 140
 141 #define PA_PTR_TO_INT(p) ((int) PA_PTR_TO_UINT(p))
 142 #define PA_INT_TO_PTR(u) PA_UINT_TO_PTR((int) u)
 143
 144 #define PA_PTR_TO_INT32(p) ((int32_t) PA_PTR_TO_UINT(p))
 145 #define PA_INT32_TO_PTR(u) PA_UINT_TO_PTR((int32_t) u)
 146
 147 #ifdef OS_IS_WIN32
 148 #define PA_PATH_SEP "\\"
 149 #define PA_PATH_SEP_CHAR '\\'
 150 #else
 151 #define PA_PATH_SEP "/"
 152 #define PA_PATH_SEP_CHAR '/'
 153 #endif
 154
 155 #endif