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/* -*- mode: C; c-file-style: "gnu" -*- */
/* dbus-internals.h random utility stuff (internal to D-BUS implementation)
*
* Copyright (C) 2002, 2003 Red Hat, Inc.
*
* Licensed under the Academic Free License version 2.1
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#ifdef DBUS_INSIDE_DBUS_H
#error "You can't include dbus-internals.h in the public header dbus.h"
#endif
#ifndef DBUS_INTERNALS_H
#define DBUS_INTERNALS_H
#include <config.h>
#include <dbus/dbus-memory.h>
#include <dbus/dbus-types.h>
#include <dbus/dbus-errors.h>
#include <dbus/dbus-sysdeps.h>
#include <dbus/dbus-threads.h>
DBUS_BEGIN_DECLS
void _dbus_warn (const char *format,
...) _DBUS_GNUC_PRINTF (1, 2);
void _dbus_verbose_real (const char *format,
...) _DBUS_GNUC_PRINTF (1, 2);
void _dbus_verbose_reset_real (void);
#if defined (__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)
#define _DBUS_FUNCTION_NAME __func__
#elif defined(__GNUC__)
#define _DBUS_FUNCTION_NAME __FUNCTION__
#else
#define _DBUS_FUNCTION_NAME "unknown function"
#endif
/*
* (code from GLib)
*
* The _DBUS_LIKELY and _DBUS_UNLIKELY macros let the programmer give hints to
* the compiler about the expected result of an expression. Some compilers
* can use this information for optimizations.
*
* The _DBUS_BOOLEAN_EXPR macro is intended to trigger a gcc warning when
* putting assignments in the macro arg
*/
#if defined(__GNUC__) && (__GNUC__ > 2) && defined(__OPTIMIZE__)
#define _DBUS_BOOLEAN_EXPR(expr) \
__extension__ ({ \
int _dbus_boolean_var_; \
if (expr) \
_dbus_boolean_var_ = 1; \
else \
_dbus_boolean_var_ = 0; \
_dbus_boolean_var_; \
})
#define _DBUS_LIKELY(expr) (__builtin_expect (_DBUS_BOOLEAN_EXPR(expr), 1))
#define _DBUS_UNLIKELY(expr) (__builtin_expect (_DBUS_BOOLEAN_EXPR(expr), 0))
#else
#define _DBUS_LIKELY(expr) (expr)
#define _DBUS_UNLIKELY(expr) (expr)
#endif
#ifdef DBUS_ENABLE_VERBOSE_MODE
# define _dbus_verbose _dbus_verbose_real
# define _dbus_verbose_reset _dbus_verbose_reset_real
#else
# ifdef HAVE_ISO_VARARGS
# define _dbus_verbose(...)
# elif defined (HAVE_GNUC_VARARGS)
# define _dbus_verbose(format...)
# else
# error "This compiler does not support varargs macros and thus verbose mode can't be disabled meaningfully"
# endif
# define _dbus_verbose_reset()
#endif /* !DBUS_ENABLE_VERBOSE_MODE */
const char* _dbus_strerror (int error_number);
#ifdef DBUS_DISABLE_ASSERT
#define _dbus_assert(condition)
#else
void _dbus_real_assert (dbus_bool_t condition,
const char *condition_text,
const char *file,
int line,
const char *func);
#define _dbus_assert(condition) \
_dbus_real_assert ((condition) != 0, #condition, __FILE__, __LINE__, _DBUS_FUNCTION_NAME)
#endif /* !DBUS_DISABLE_ASSERT */
#ifdef DBUS_DISABLE_ASSERT
#define _dbus_assert_not_reached(explanation)
#else
void _dbus_real_assert_not_reached (const char *explanation,
const char *file,
int line) _DBUS_GNUC_NORETURN;
#define _dbus_assert_not_reached(explanation) \
_dbus_real_assert_not_reached (explanation, __FILE__, __LINE__)
#endif /* !DBUS_DISABLE_ASSERT */
#ifdef DBUS_DISABLE_CHECKS
#define _dbus_return_if_fail(condition)
#define _dbus_return_val_if_fail(condition, val)
#else
extern const char _dbus_return_if_fail_warning_format[];
#define _dbus_return_if_fail(condition) do { \
_dbus_assert ((*(const char*)_DBUS_FUNCTION_NAME) != '_'); \
if (!(condition)) { \
_dbus_warn (_dbus_return_if_fail_warning_format, \
_dbus_getpid (), _DBUS_FUNCTION_NAME, #condition, __FILE__, __LINE__); \
return; \
} } while (0)
#define _dbus_return_val_if_fail(condition, val) do { \
_dbus_assert ((*(const char*)_DBUS_FUNCTION_NAME) != '_'); \
if (!(condition)) { \
_dbus_warn (_dbus_return_if_fail_warning_format, \
_dbus_getpid (), _DBUS_FUNCTION_NAME, #condition, __FILE__, __LINE__); \
return (val); \
} } while (0)
#endif /* !DBUS_DISABLE_ASSERT */
#define _DBUS_N_ELEMENTS(array) ((int) (sizeof ((array)) / sizeof ((array)[0])))
#define _DBUS_POINTER_TO_INT(pointer) ((long)(pointer))
#define _DBUS_INT_TO_POINTER(integer) ((void*)((long)(integer)))
#define _DBUS_ZERO(object) (memset (&(object), '\0', sizeof ((object))))
#define _DBUS_STRUCT_OFFSET(struct_type, member) \
((long) ((unsigned char*) &((struct_type*) 0)->member))
#define _DBUS_ASSERT_ERROR_IS_SET(error) _dbus_assert ((error) == NULL || dbus_error_is_set ((error)))
#define _DBUS_ASSERT_ERROR_IS_CLEAR(error) _dbus_assert ((error) == NULL || !dbus_error_is_set ((error)))
#define _dbus_return_if_error_is_set(error) _dbus_return_if_fail ((error) == NULL || !dbus_error_is_set ((error)))
#define _dbus_return_val_if_error_is_set(error, val) _dbus_return_val_if_fail ((error) == NULL || !dbus_error_is_set ((error)), (val))
/* This alignment thing is from ORBit2 */
/* Align a value upward to a boundary, expressed as a number of bytes.
* E.g. align to an 8-byte boundary with argument of 8.
*/
/*
* (this + boundary - 1)
* &
* ~(boundary - 1)
*/
#define _DBUS_ALIGN_VALUE(this, boundary) \
(( ((unsigned long)(this)) + (((unsigned long)(boundary)) -1)) & (~(((unsigned long)(boundary))-1)))
#define _DBUS_ALIGN_ADDRESS(this, boundary) \
((void*)_DBUS_ALIGN_VALUE(this, boundary))
char* _dbus_strdup (const char *str);
void* _dbus_memdup (const void *mem,
size_t n_bytes);
dbus_bool_t _dbus_string_array_contains (const char **array,
const char *str);
char** _dbus_dup_string_array (const char **array);
#define _DBUS_INT_MIN (-_DBUS_INT_MAX - 1)
#define _DBUS_INT_MAX 2147483647
#define _DBUS_UINT_MAX 0xffffffff
#ifdef DBUS_HAVE_INT64
#define _DBUS_INT64_MAX DBUS_INT64_CONSTANT (9223372036854775807)
#define _DBUS_UINT64_MAX DBUS_UINT64_CONSTANT (0xffffffffffffffff)
#endif
#define _DBUS_ONE_KILOBYTE 1024
#define _DBUS_ONE_MEGABYTE 1024 * _DBUS_ONE_KILOBYTE
#define _DBUS_ONE_HOUR_IN_MILLISECONDS (1000 * 60 * 60)
#define _DBUS_USEC_PER_SECOND (1000000)
#undef MAX
#define MAX(a, b) (((a) > (b)) ? (a) : (b))
#undef MIN
#define MIN(a, b) (((a) < (b)) ? (a) : (b))
#undef ABS
#define ABS(a) (((a) < 0) ? -(a) : (a))
#define _DBUS_ISASCII(c) ((c) != '\0' && (((c) & ~0x7f) == 0))
typedef void (* DBusForeachFunction) (void *element,
void *data);
dbus_bool_t _dbus_set_fd_nonblocking (int fd,
DBusError *error);
void _dbus_verbose_bytes (const unsigned char *data,
int len,
int offset);
void _dbus_verbose_bytes_of_string (const DBusString *str,
int start,
int len);
const char* _dbus_header_field_to_string (int header_field);
extern const char _dbus_no_memory_message[];
#define _DBUS_SET_OOM(error) dbus_set_error_const ((error), DBUS_ERROR_NO_MEMORY, _dbus_no_memory_message)
#ifdef DBUS_BUILD_TESTS
/* Memory debugging */
void _dbus_set_fail_alloc_counter (int until_next_fail);
int _dbus_get_fail_alloc_counter (void);
void _dbus_set_fail_alloc_failures (int failures_per_failure);
int _dbus_get_fail_alloc_failures (void);
dbus_bool_t _dbus_decrement_fail_alloc_counter (void);
dbus_bool_t _dbus_disable_mem_pools (void);
int _dbus_get_malloc_blocks_outstanding (void);
typedef dbus_bool_t (* DBusTestMemoryFunction) (void *data);
dbus_bool_t _dbus_test_oom_handling (const char *description,
DBusTestMemoryFunction func,
void *data);
#else
#define _dbus_set_fail_alloc_counter(n)
#define _dbus_get_fail_alloc_counter _DBUS_INT_MAX
/* These are constant expressions so that blocks
* they protect should be optimized away
*/
#define _dbus_decrement_fail_alloc_counter() (FALSE)
#define _dbus_disable_mem_pools() (FALSE)
#define _dbus_get_malloc_blocks_outstanding (0)
#endif /* !DBUS_BUILD_TESTS */
typedef void (* DBusShutdownFunction) (void *data);
dbus_bool_t _dbus_register_shutdown_func (DBusShutdownFunction function,
void *data);
extern int _dbus_current_generation;
/* Thread initializers */
#define _DBUS_LOCK_NAME(name) _dbus_lock_##name
#define _DBUS_DECLARE_GLOBAL_LOCK(name) extern DBusMutex *_dbus_lock_##name
#define _DBUS_DEFINE_GLOBAL_LOCK(name) DBusMutex *_dbus_lock_##name
#define _DBUS_LOCK(name) dbus_mutex_lock (_dbus_lock_##name)
#define _DBUS_UNLOCK(name) dbus_mutex_unlock (_dbus_lock_##name)
_DBUS_DECLARE_GLOBAL_LOCK (list);
_DBUS_DECLARE_GLOBAL_LOCK (connection_slots);
_DBUS_DECLARE_GLOBAL_LOCK (pending_call_slots);
_DBUS_DECLARE_GLOBAL_LOCK (server_slots);
_DBUS_DECLARE_GLOBAL_LOCK (message_slots);
_DBUS_DECLARE_GLOBAL_LOCK (atomic);
_DBUS_DECLARE_GLOBAL_LOCK (bus);
_DBUS_DECLARE_GLOBAL_LOCK (shutdown_funcs);
_DBUS_DECLARE_GLOBAL_LOCK (system_users);
_DBUS_DECLARE_GLOBAL_LOCK (message_cache);
#define _DBUS_N_GLOBAL_LOCKS (10)
dbus_bool_t _dbus_threads_init_debug (void);
DBUS_END_DECLS
#endif /* DBUS_INTERNALS_H */
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