D-Bus 1.15.12
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_dbus_rmutex_lock(), etc. More...
Typedefs | |
typedef struct DBusRMutex | DBusRMutex |
A mutex which is recursive if possible, else non-recursive. | |
typedef struct DBusCMutex | DBusCMutex |
A mutex suitable for use with condition variables. | |
Functions | |
void | _dbus_rmutex_new_at_location (DBusRMutex **location_p) |
Creates a new mutex or creates a no-op mutex if threads are not initialized. | |
void | _dbus_cmutex_new_at_location (DBusCMutex **location_p) |
Creates a new mutex or creates a no-op mutex if threads are not initialized. | |
void | _dbus_rmutex_free_at_location (DBusRMutex **location_p) |
Frees a DBusRMutex; does nothing if passed a NULL pointer. | |
void | _dbus_cmutex_free_at_location (DBusCMutex **location_p) |
Frees a DBusCMutex; does nothing if passed a NULL pointer. | |
void | _dbus_rmutex_lock (DBusRMutex *mutex) |
Locks a mutex. | |
void | _dbus_cmutex_lock (DBusCMutex *mutex) |
Locks a mutex. | |
void | _dbus_rmutex_unlock (DBusRMutex *mutex) |
Unlocks a mutex. | |
void | _dbus_cmutex_unlock (DBusCMutex *mutex) |
Unlocks a mutex. | |
DBusCondVar * | _dbus_condvar_new (void) |
Creates a new condition variable using the function supplied to dbus_threads_init(), or creates a no-op condition variable if threads are not initialized. | |
void | _dbus_condvar_new_at_location (DBusCondVar **location_p) |
This does the same thing as _dbus_condvar_new. | |
void | _dbus_condvar_free (DBusCondVar *cond) |
Frees a conditional variable created with dbus_condvar_new(); does nothing if passed a NULL pointer. | |
void | _dbus_condvar_free_at_location (DBusCondVar **location_p) |
Frees a condition variable; does nothing if passed a NULL pointer. | |
void | _dbus_condvar_wait (DBusCondVar *cond, DBusCMutex *mutex) |
Atomically unlocks the mutex and waits for the conditions variable to be signalled. | |
dbus_bool_t | _dbus_condvar_wait_timeout (DBusCondVar *cond, DBusCMutex *mutex, int timeout_milliseconds) |
Atomically unlocks the mutex and waits for the conditions variable to be signalled, or for a timeout. | |
void | _dbus_condvar_wake_one (DBusCondVar *cond) |
If there are threads waiting on the condition variable, wake up exactly one. | |
dbus_bool_t | _dbus_lock (DBusGlobalLock lock) |
void | _dbus_unlock (DBusGlobalLock lock) |
_dbus_rmutex_lock(), etc.
Functions and macros related to threads and thread locks.
typedef struct DBusCMutex DBusCMutex |
A mutex suitable for use with condition variables.
This is typically non-recursive.
Definition at line 47 of file dbus-threads-internal.h.
typedef struct DBusRMutex DBusRMutex |
A mutex which is recursive if possible, else non-recursive.
This is typically recursive, but that cannot be relied upon.
Definition at line 41 of file dbus-threads-internal.h.
void _dbus_cmutex_free_at_location | ( | DBusCMutex ** | location_p | ) |
Frees a DBusCMutex; does nothing if passed a NULL pointer.
Definition at line 110 of file dbus-threads.c.
References NULL.
Referenced by _dbus_connection_new_for_transport().
void _dbus_cmutex_lock | ( | DBusCMutex * | mutex | ) |
Locks a mutex.
Does nothing if passed a NULL pointer. Locks may be recursive if threading implementation initialized recursive locks.
Definition at line 139 of file dbus-threads.c.
References NULL.
void _dbus_cmutex_new_at_location | ( | DBusCMutex ** | location_p | ) |
Creates a new mutex or creates a no-op mutex if threads are not initialized.
May return NULL even if threads are initialized, indicating out-of-memory.
The returned mutex is suitable for use with condition variables.
location_p | the location of the new mutex, can return NULL on OOM |
Definition at line 80 of file dbus-threads.c.
References _dbus_assert, dbus_threads_init_default(), and NULL.
Referenced by _dbus_connection_new_for_transport().
void _dbus_cmutex_unlock | ( | DBusCMutex * | mutex | ) |
Unlocks a mutex.
Does nothing if passed a NULL pointer.
Definition at line 167 of file dbus-threads.c.
References NULL.
void _dbus_condvar_free | ( | DBusCondVar * | cond | ) |
Frees a conditional variable created with dbus_condvar_new(); does nothing if passed a NULL pointer.
Definition at line 215 of file dbus-threads.c.
References NULL.
void _dbus_condvar_free_at_location | ( | DBusCondVar ** | location_p | ) |
Frees a condition variable; does nothing if passed a NULL pointer.
Definition at line 227 of file dbus-threads.c.
References NULL.
Referenced by _dbus_connection_new_for_transport().
DBusCondVar * _dbus_condvar_new | ( | void | ) |
Creates a new condition variable using the function supplied to dbus_threads_init(), or creates a no-op condition variable if threads are not initialized.
May return NULL even if threads are initialized, indicating out-of-memory.
Definition at line 184 of file dbus-threads.c.
References dbus_threads_init_default(), and NULL.
Referenced by _dbus_condvar_new_at_location().
void _dbus_condvar_new_at_location | ( | DBusCondVar ** | location_p | ) |
This does the same thing as _dbus_condvar_new.
It however gives another level of indirection by allocating a pointer to point to the condvar location; this used to be useful.
Definition at line 202 of file dbus-threads.c.
References _dbus_assert, _dbus_condvar_new(), and NULL.
Referenced by _dbus_connection_new_for_transport().
void _dbus_condvar_wait | ( | DBusCondVar * | cond, |
DBusCMutex * | mutex | ||
) |
Atomically unlocks the mutex and waits for the conditions variable to be signalled.
Locks the mutex again before returning. Does nothing if passed a NULL pointer.
Definition at line 243 of file dbus-threads.c.
References NULL.
dbus_bool_t _dbus_condvar_wait_timeout | ( | DBusCondVar * | cond, |
DBusCMutex * | mutex, | ||
int | timeout_milliseconds | ||
) |
Atomically unlocks the mutex and waits for the conditions variable to be signalled, or for a timeout.
Locks the mutex again before returning. Does nothing if passed a NULL pointer. Return value is FALSE if we timed out, TRUE otherwise.
cond | the condition variable |
mutex | the mutex |
timeout_milliseconds | the maximum time to wait |
Definition at line 264 of file dbus-threads.c.
void _dbus_condvar_wake_one | ( | DBusCondVar * | cond | ) |
If there are threads waiting on the condition variable, wake up exactly one.
Does nothing if passed a NULL pointer.
Definition at line 281 of file dbus-threads.c.
References NULL.
dbus_bool_t _dbus_lock | ( | DBusGlobalLock | lock | ) |
Definition at line 341 of file dbus-threads.c.
void _dbus_rmutex_free_at_location | ( | DBusRMutex ** | location_p | ) |
Frees a DBusRMutex; does nothing if passed a NULL pointer.
Definition at line 97 of file dbus-threads.c.
References NULL.
Referenced by _dbus_connection_new_for_transport(), _dbus_counter_unref(), _dbus_server_finalize_base(), and _dbus_server_init_base().
void _dbus_rmutex_lock | ( | DBusRMutex * | mutex | ) |
Locks a mutex.
Does nothing if passed a NULL pointer. Locks may be recursive if threading implementation initialized recursive locks.
Definition at line 125 of file dbus-threads.c.
References NULL.
Referenced by _dbus_counter_adjust_size(), _dbus_counter_adjust_unix_fd(), _dbus_counter_get_size_value(), _dbus_counter_get_unix_fd_value(), _dbus_counter_notify(), _dbus_counter_ref(), _dbus_counter_set_notify(), and _dbus_counter_unref().
void _dbus_rmutex_new_at_location | ( | DBusRMutex ** | location_p | ) |
Creates a new mutex or creates a no-op mutex if threads are not initialized.
May return NULL even if threads are initialized, indicating out-of-memory.
If possible, the mutex returned by this function is recursive, to avoid deadlocks. However, that cannot be relied on.
location_p | the location of the new mutex, can return NULL on OOM |
Definition at line 56 of file dbus-threads.c.
References _dbus_assert, dbus_threads_init_default(), and NULL.
Referenced by _dbus_connection_new_for_transport(), _dbus_counter_new(), and _dbus_server_init_base().
void _dbus_rmutex_unlock | ( | DBusRMutex * | mutex | ) |
Unlocks a mutex.
Does nothing if passed a NULL pointer.
Definition at line 153 of file dbus-threads.c.
References NULL.
Referenced by _dbus_connection_unlock(), _dbus_counter_adjust_size(), _dbus_counter_adjust_unix_fd(), _dbus_counter_get_size_value(), _dbus_counter_get_unix_fd_value(), _dbus_counter_notify(), _dbus_counter_ref(), _dbus_counter_set_notify(), and _dbus_counter_unref().
void _dbus_unlock | ( | DBusGlobalLock | lock | ) |
Definition at line 355 of file dbus-threads.c.