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
  35 #ifndef PACKAGE
  36 #error "Please include config.h before including this file!"
  37 #endif
  38
  39 #if defined(PAGE_SIZE)
  40 #define PA_PAGE_SIZE ((size_t) PAGE_SIZE)
  41 #elif defined(PAGESIZE)
  42 #define PA_PAGE_SIZE ((size_t) PAGESIZE)
  43 #elif defined(HAVE_SYSCONF)
  44 #define PA_PAGE_SIZE ((size_t) (sysconf(_SC_PAGE_SIZE)))
  45 #else
  46 /* Let's hope it's like x86. */
  47 #define PA_PAGE_SIZE ((size_t) 4096)
  48 #endif
  49
  50 static inline size_t pa_align(size_t l) {
  51     return (((l + sizeof(void*) - 1) / sizeof(void*)) * sizeof(void*));
  52 }
  53 #define PA_ALIGN(x) (pa_align(x))
  54
  55 static inline void* pa_page_align_ptr(const void *p) {
  56     return (void*) (((size_t) p) & ~(PA_PAGE_SIZE-1));
  57 }
  58 #define PA_PAGE_ALIGN_PTR(x) (pa_page_align_ptr(x))
  59
  60 static inline size_t pa_page_align(size_t l) {
  61     return l & ~(PA_PAGE_SIZE-1);
  62 }
  63 #define PA_PAGE_ALIGN(x) (pa_page_align(x))
  64
  65 #define PA_ELEMENTSOF(x) (sizeof(x)/sizeof((x)[0]))
  66
  67 #ifndef MAX
  68 #define MAX(a, b) ((a) > (b) ? (a) : (b))
  69 #endif
  70
  71 #ifndef MIN
  72 #define MIN(a, b) ((a) < (b) ? (a) : (b))
  73 #endif
  74
  75 #ifndef CLAMP
  76 #define CLAMP(x, low, high)  (((x) > (high)) ? (high) : (((x) < (low)) ? (low) : (x)))
  77 #endif
  78
  79 /* This type is not intended to be used in exported APIs! Use classic "int" there! */
  80 #ifdef HAVE_STD_BOOL
  81 typedef _Bool pa_bool_t;
  82 #else
  83 typedef int pa_bool_t;
  84 #endif
  85
  86 #ifndef FALSE
  87 #define FALSE ((pa_bool_t) 0)
  88 #endif
  89
  90 #ifndef TRUE
  91 #define TRUE (!FALSE)
  92 #endif
  93
  94 #ifdef __GNUC__
  95 #define PA_PRETTY_FUNCTION __PRETTY_FUNCTION__
  96 #else
  97 #define PA_PRETTY_FUNCTION ""
  98 #endif
  99
 100 #define pa_return_if_fail(expr) \
 101     do { \
 102         if (!(expr)) { \
 103             pa_log_debug("%s: Assertion <%s> failed.\n", PA_PRETTY_FUNCTION, #expr ); \
 104             return; \
 105         } \
 106     } while(0)
 107
 108 #define pa_return_val_if_fail(expr, val) \
 109     do { \
 110         if (!(expr)) { \
 111             pa_log_debug("%s: Assertion <%s> failed.\n", PA_PRETTY_FUNCTION, #expr ); \
 112             return (val); \
 113         } \
 114     } while(0)
 115
 116 #define pa_return_null_if_fail(expr) pa_return_val_if_fail(expr, NULL)
 117
 118 #define pa_assert assert
 119
 120 #define pa_assert_not_reached() pa_assert(!"Should not be reached.")
 121
 122 /* An assert which guarantees side effects of x */
 123 #ifdef NDEBUG
 124 #define pa_assert_se(x) x
 125 #else
 126 #define pa_assert_se(x) pa_assert(x)
 127 #endif
 128
 129 #define PA_PTR_TO_UINT(p) ((unsigned int) (unsigned long) (p))
 130 #define PA_UINT_TO_PTR(u) ((void*) (unsigned long) (u))
 131
 132 #define PA_PTR_TO_UINT32(p) ((uint32_t) PA_PTR_TO_UINT(p))
 133 #define PA_UINT32_TO_PTR(u) PA_UINT_TO_PTR((uint32_t) u)
 134
 135 #define PA_PTR_TO_INT(p) ((int) PA_PTR_TO_UINT(p))
 136 #define PA_INT_TO_PTR(u) PA_UINT_TO_PTR((int) u)
 137
 138 #define PA_PTR_TO_INT32(p) ((int32_t) PA_PTR_TO_UINT(p))
 139 #define PA_INT32_TO_PTR(u) PA_UINT_TO_PTR((int32_t) u)
 140
 141 #ifdef OS_IS_WIN32
 142 #define PA_PATH_SEP "\\"
 143 #define PA_PATH_SEP_CHAR '\\'
 144 #else
 145 #define PA_PATH_SEP "/"
 146 #define PA_PATH_SEP_CHAR '/'
 147 #endif
 148
 149 #endif