24 #include "dbus-threads.h"
25 #include "dbus-internals.h"
26 #include "dbus-threads-internal.h"
27 #include "dbus-list.h"
29 static int thread_init_generation = 0;
63 *location_p = _dbus_platform_rmutex_new ();
87 *location_p = _dbus_platform_cmutex_new ();
96 if (location_p ==
NULL)
99 if (*location_p !=
NULL)
100 _dbus_platform_rmutex_free (*location_p);
109 if (location_p ==
NULL)
112 if (*location_p !=
NULL)
113 _dbus_platform_cmutex_free (*location_p);
127 _dbus_platform_rmutex_lock (mutex);
141 _dbus_platform_cmutex_lock (mutex);
155 _dbus_platform_rmutex_unlock (mutex);
169 _dbus_platform_cmutex_unlock (mutex);
186 return _dbus_platform_condvar_new ();
217 _dbus_platform_condvar_free (cond);
226 if (location_p ==
NULL)
229 if (*location_p !=
NULL)
230 _dbus_platform_condvar_free (*location_p);
246 _dbus_platform_condvar_wait (cond, mutex);
263 int timeout_milliseconds)
268 return _dbus_platform_condvar_wait_timeout (cond, mutex,
269 timeout_milliseconds);
283 _dbus_platform_condvar_wake_one (cond);
289 shutdown_global_locks (
void *nil)
293 for (i = 0; i < _DBUS_N_GLOBAL_LOCKS; i++)
296 _dbus_platform_rmutex_free (global_locks[i]);
297 global_locks[i] =
NULL;
302 init_global_locks (
void)
307 for (i = 0; i < _DBUS_N_GLOBAL_LOCKS; i++)
311 global_locks[i] = _dbus_platform_rmutex_new ();
313 if (global_locks[i] ==
NULL)
317 _dbus_platform_rmutex_lock (global_locks[_DBUS_LOCK_shutdown_funcs]);
318 ok = _dbus_register_shutdown_func_unlocked (shutdown_global_locks,
NULL);
319 _dbus_platform_rmutex_unlock (global_locks[_DBUS_LOCK_shutdown_funcs]);
327 for (i = i - 1; i >= 0; i--)
329 _dbus_platform_rmutex_free (global_locks[i]);
330 global_locks[i] =
NULL;
337 _dbus_lock (DBusGlobalLock
lock)
346 _dbus_platform_rmutex_lock (global_locks[lock]);
351 _dbus_unlock (DBusGlobalLock lock)
356 _dbus_platform_rmutex_unlock (global_locks[lock]);
402 !init_global_locks ())
446 #ifdef DBUS_ENABLE_EMBEDDED_TESTS
449 _dbus_threads_init_debug (
void)
Functions that must be implemented to make the D-Bus library thread-aware.
#define NULL
A null pointer, defined appropriately for C or C++.
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.
#define _dbus_assert(condition)
Aborts with an error message if the condition is false.
dbus_bool_t _dbus_threads_init_platform_specific(void)
Initialize threads as in dbus_threads_init_default(), appropriately for the platform.
void _dbus_rmutex_new_at_location(DBusRMutex **location_p)
Creates a new mutex or creates a no-op mutex if threads are not initialized.
pthread_mutex_t lock
the lock
void _dbus_threads_unlock_platform_specific(void)
Undo _dbus_threads_lock_platform_specific().
void _dbus_threads_lock_platform_specific(void)
Lock a static mutex used to protect _dbus_threads_init_platform_specific().
void _dbus_rmutex_unlock(DBusRMutex *mutex)
Unlocks a mutex.
void _dbus_condvar_free(DBusCondVar *cond)
Frees a conditional variable created with dbus_condvar_new(); does nothing if passed a NULL pointer...
dbus_uint32_t dbus_bool_t
A boolean, valid values are TRUE and FALSE.
int _dbus_current_generation
_dbus_current_generation is used to track each time that dbus_shutdown() is called, so we can reinit things after it's been called.
void _dbus_cmutex_unlock(DBusCMutex *mutex)
Unlocks a mutex.
#define TRUE
Expands to "1".
void _dbus_condvar_new_at_location(DBusCondVar **location_p)
This does the same thing as _dbus_condvar_new.
void _dbus_condvar_wake_one(DBusCondVar *cond)
If there are threads waiting on the condition variable, wake up exactly one.
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_rmutex_free_at_location(DBusRMutex **location_p)
Frees a DBusRMutex; does nothing if passed a NULL pointer.
void _dbus_cmutex_lock(DBusCMutex *mutex)
Locks a mutex.
void _dbus_rmutex_lock(DBusRMutex *mutex)
Locks a mutex.
#define FALSE
Expands to "0".
void _dbus_cmutex_free_at_location(DBusCMutex **location_p)
Frees a DBusCMutex; does nothing if passed a NULL pointer.
dbus_bool_t dbus_threads_init(const DBusThreadFunctions *functions)
Initializes threads, like dbus_threads_init_default().
dbus_bool_t dbus_threads_init_default(void)
Initializes threads.
void _dbus_condvar_free_at_location(DBusCondVar **location_p)
Frees a condition variable; does nothing if passed a NULL pointer.
void _dbus_cmutex_new_at_location(DBusCMutex **location_p)
Creates a new mutex or creates a no-op mutex if threads are not initialized.