dbus-internals.h revision 615fa679e1f8339d4f57e8b6dc49e7fb5da49f2d
1/* -*- mode: C; c-file-style: "gnu" -*- */ 2/* dbus-internals.h random utility stuff (internal to D-BUS implementation) 3 * 4 * Copyright (C) 2002 Red Hat, Inc. 5 * 6 * Licensed under the Academic Free License version 1.2 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 21 * 22 */ 23#ifdef DBUS_INSIDE_DBUS_H 24#error "You can't include dbus-internals.h in the public header dbus.h" 25#endif 26 27#ifndef DBUS_INTERNALS_H 28#define DBUS_INTERNALS_H 29 30#include <config.h> 31 32#include <dbus/dbus-memory.h> 33#include <dbus/dbus-types.h> 34#include <dbus/dbus-errors.h> 35#include <dbus/dbus-sysdeps.h> 36#include <dbus/dbus-threads.h> 37 38DBUS_BEGIN_DECLS; 39 40#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ > 4) 41#define _DBUS_GNUC_PRINTF( format_idx, arg_idx ) \ 42 __attribute__((__format__ (__printf__, format_idx, arg_idx))) 43#define _DBUS_GNUC_SCANF( format_idx, arg_idx ) \ 44 __attribute__((__format__ (__scanf__, format_idx, arg_idx))) 45#define _DBUS_GNUC_FORMAT( arg_idx ) \ 46 __attribute__((__format_arg__ (arg_idx))) 47#define _DBUS_GNUC_NORETURN \ 48 __attribute__((__noreturn__)) 49#else /* !__GNUC__ */ 50#define _DBUS_GNUC_PRINTF( format_idx, arg_idx ) 51#define _DBUS_GNUC_SCANF( format_idx, arg_idx ) 52#define _DBUS_GNUC_FORMAT( arg_idx ) 53#define _DBUS_GNUC_NORETURN 54#endif /* !__GNUC__ */ 55 56void _dbus_warn (const char *format, 57 ...) _DBUS_GNUC_PRINTF (1, 2); 58void _dbus_verbose_real (const char *format, 59 ...) _DBUS_GNUC_PRINTF (1, 2); 60 61 62#ifdef DBUS_ENABLE_VERBOSE_MODE 63# define _dbus_verbose _dbus_verbose_real 64#else 65# ifdef HAVE_ISO_VARARGS 66# define _dbus_verbose(...) 67# elif defined (HAVE_GNUC_VARARGS) 68# define _dbus_verbose(format...) 69# else 70# error "This compiler does not support varargs macros and thus verbose mode can't be disabled meaningfully" 71# endif 72#endif /* !DBUS_ENABLE_VERBOSE_MODE */ 73 74const char* _dbus_strerror (int error_number); 75 76DBusResultCode _dbus_result_from_errno (int error_number); 77 78#ifdef DBUS_DISABLE_ASSERT 79#define _dbus_assert(condition) 80#else 81#define _dbus_assert(condition) \ 82do { \ 83 if (!(condition)) \ 84 { \ 85 _dbus_warn ("Assertion failed \"%s\" file \"%s\" line %d\n", \ 86 #condition, __FILE__, __LINE__); \ 87 _dbus_abort (); \ 88 } \ 89} while (0) 90#endif /* !DBUS_DISABLE_ASSERT */ 91 92#ifdef DBUS_DISABLE_ASSERT 93#define _dbus_assert_not_reached(explanation) 94#else 95#define _dbus_assert_not_reached(explanation) \ 96do { \ 97 _dbus_warn ("File \"%s\" line %d should not have been reached: %s\n", \ 98 __FILE__, __LINE__, (explanation)); \ 99 _dbus_abort (); \ 100} while (0) 101#endif /* !DBUS_DISABLE_ASSERT */ 102 103#define _DBUS_N_ELEMENTS(array) ((int) (sizeof ((array)) / sizeof ((array)[0]))) 104 105#define _DBUS_POINTER_TO_INT(pointer) ((long)(pointer)) 106#define _DBUS_INT_TO_POINTER(integer) ((void*)((long)(integer))) 107 108#define _DBUS_ZERO(object) (memset (&(object), '\0', sizeof ((object)))) 109 110#define _DBUS_STRUCT_OFFSET(struct_type, member) \ 111 ((long) ((unsigned char*) &((struct_type*) 0)->member)) 112 113#define _DBUS_ASSERT_ERROR_IS_SET(error) _dbus_assert ((error) == NULL || dbus_error_is_set ((error))) 114 115/* This alignment thing is from ORBit2 */ 116/* Align a value upward to a boundary, expressed as a number of bytes. 117 * E.g. align to an 8-byte boundary with argument of 8. 118 */ 119 120/* 121 * (this + boundary - 1) 122 * & 123 * ~(boundary - 1) 124 */ 125 126#define _DBUS_ALIGN_VALUE(this, boundary) \ 127 (( ((unsigned long)(this)) + (((unsigned long)(boundary)) -1)) & (~(((unsigned long)(boundary))-1))) 128 129#define _DBUS_ALIGN_ADDRESS(this, boundary) \ 130 ((void*)_DBUS_ALIGN_VALUE(this, boundary)) 131 132char* _dbus_strdup (const char *str); 133 134#define _DBUS_INT_MIN (-_DBUS_INT_MAX - 1) 135#define _DBUS_INT_MAX 2147483647 136#define _DBUS_UINT_MAX 0xffffffff 137#define _DBUS_MAX_SUN_PATH_LENGTH 99 138#define _DBUS_ONE_KILOBYTE 1024 139#define _DBUS_ONE_MEGABYTE 1024 * _DBUS_ONE_KILOBYTE 140#define _DBUS_ONE_HOUR_IN_MILLISECONDS (1000 * 60 * 60) 141#define _DBUS_USEC_PER_SECOND (1000000) 142 143#undef MAX 144#define MAX(a, b) (((a) > (b)) ? (a) : (b)) 145 146#undef MIN 147#define MIN(a, b) (((a) < (b)) ? (a) : (b)) 148 149#undef ABS 150#define ABS(a) (((a) < 0) ? -(a) : (a)) 151 152typedef void (* DBusForeachFunction) (void *element, 153 void *data); 154 155dbus_bool_t _dbus_set_fd_nonblocking (int fd, 156 DBusResultCode *result); 157 158void _dbus_verbose_bytes (const unsigned char *data, 159 int len); 160void _dbus_verbose_bytes_of_string (const DBusString *str, 161 int start, 162 int len); 163 164 165const char* _dbus_type_to_string (int type); 166 167extern const char _dbus_no_memory_message[]; 168#define _DBUS_SET_OOM(error) dbus_set_error ((error), DBUS_ERROR_NO_MEMORY, _dbus_no_memory_message) 169 170#ifdef DBUS_BUILD_TESTS 171/* Memory debugging */ 172void _dbus_set_fail_alloc_counter (int until_next_fail); 173int _dbus_get_fail_alloc_counter (void); 174dbus_bool_t _dbus_decrement_fail_alloc_counter (void); 175dbus_bool_t _dbus_disable_mem_pools (void); 176#else 177#define _dbus_set_fail_alloc_counter(n) 178#define _dbus_get_fail_alloc_counter _DBUS_INT_MAX 179 180/* These are constant expressions so that blocks 181 * they protect should be optimized away 182 */ 183#define _dbus_decrement_fail_alloc_counter() FALSE 184#define _dbus_disable_mem_pools() FALSE 185#endif /* !DBUS_BUILD_TESTS */ 186 187/* Thread initializers */ 188DBusMutex *_dbus_list_init_lock (void); 189DBusMutex *_dbus_connection_slots_init_lock (void); 190DBusMutex *_dbus_server_slots_init_lock (void); 191DBusMutex *_dbus_atomic_init_lock (void); 192DBusMutex *_dbus_message_handler_init_lock (void); 193DBusMutex *_dbus_user_info_init_lock (void); 194DBusMutex *_dbus_bus_init_lock (void); 195 196DBUS_END_DECLS; 197 198#endif /* DBUS_INTERNALS_H */ 199