| /* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */ |
| /* dbus-threads.h D-Bus threads handling |
| * |
| * Copyright (C) 2002, 2003, 2006 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| * |
| */ |
| #include <config.h> |
| #include "dbus-threads.h" |
| #include "dbus-internals.h" |
| #include "dbus-threads-internal.h" |
| #include "dbus-list.h" |
| |
| static DBusThreadFunctions thread_functions = |
| { |
| 0, |
| NULL, NULL, NULL, NULL, NULL, |
| NULL, NULL, NULL, NULL, NULL, |
| NULL, NULL, NULL, NULL, |
| |
| NULL, NULL, NULL, NULL |
| }; |
| |
| static int thread_init_generation = 0; |
| |
| static DBusList *uninitialized_mutex_list = NULL; |
| static DBusList *uninitialized_condvar_list = NULL; |
| |
| /** This is used for the no-op default mutex pointer, just to be distinct from #NULL */ |
| #define _DBUS_DUMMY_MUTEX ((DBusMutex*)0xABCDEF) |
| |
| /** This is used for the no-op default mutex pointer, just to be distinct from #NULL */ |
| #define _DBUS_DUMMY_CONDVAR ((DBusCondVar*)0xABCDEF2) |
| |
| /** |
| * @defgroup DBusThreadsInternals Thread functions |
| * @ingroup DBusInternals |
| * @brief _dbus_mutex_lock(), etc. |
| * |
| * Functions and macros related to threads and thread locks. |
| * |
| * @{ |
| */ |
| |
| /** |
| * Creates a new mutex using the function supplied to dbus_threads_init(), |
| * or creates a no-op mutex if threads are not initialized. |
| * May return #NULL even if threads are initialized, indicating |
| * out-of-memory. |
| * |
| * @returns new mutex or #NULL |
| */ |
| DBusMutex* |
| _dbus_mutex_new (void) |
| { |
| if (thread_functions.recursive_mutex_new) |
| return (* thread_functions.recursive_mutex_new) (); |
| else if (thread_functions.mutex_new) |
| return (* thread_functions.mutex_new) (); |
| else |
| return _DBUS_DUMMY_MUTEX; |
| } |
| |
| /** |
| * This does the same thing as _dbus_mutex_new. It however |
| * gives another level of indirection by allocating a pointer |
| * to point to the mutex location. This allows the threading |
| * module to swap out dummy mutexes for real a real mutex so libraries |
| * can initialize threads even after the D-Bus API has been used. |
| * |
| * @param location_p the location of the new mutex, can return #NULL on OOM |
| */ |
| void |
| _dbus_mutex_new_at_location (DBusMutex **location_p) |
| { |
| _dbus_assert (location_p != NULL); |
| |
| *location_p = _dbus_mutex_new(); |
| |
| if (thread_init_generation != _dbus_current_generation && *location_p) |
| { |
| if (!_dbus_list_append (&uninitialized_mutex_list, location_p)) |
| { |
| _dbus_mutex_free (*location_p); |
| *location_p = NULL; |
| } |
| } |
| } |
| |
| /** |
| * Frees a mutex created with dbus_mutex_new(); does |
| * nothing if passed a #NULL pointer. |
| */ |
| void |
| _dbus_mutex_free (DBusMutex *mutex) |
| { |
| if (mutex) |
| { |
| if (mutex && thread_functions.recursive_mutex_free) |
| (* thread_functions.recursive_mutex_free) (mutex); |
| else if (mutex && thread_functions.mutex_free) |
| (* thread_functions.mutex_free) (mutex); |
| } |
| } |
| |
| /** |
| * Frees a mutex and removes it from the |
| * uninitialized_mutex_list; |
| * does nothing if passed a #NULL pointer. |
| */ |
| void |
| _dbus_mutex_free_at_location (DBusMutex **location_p) |
| { |
| if (location_p) |
| { |
| if (thread_init_generation != _dbus_current_generation) |
| _dbus_list_remove (&uninitialized_mutex_list, location_p); |
| |
| _dbus_mutex_free (*location_p); |
| } |
| } |
| |
| /** |
| * Locks a mutex. Does nothing if passed a #NULL pointer. |
| * Locks may be recursive if threading implementation initialized |
| * recursive locks. |
| */ |
| void |
| _dbus_mutex_lock (DBusMutex *mutex) |
| { |
| if (mutex) |
| { |
| if (thread_functions.recursive_mutex_lock) |
| (* thread_functions.recursive_mutex_lock) (mutex); |
| else if (thread_functions.mutex_lock) |
| (* thread_functions.mutex_lock) (mutex); |
| } |
| } |
| |
| /** |
| * Unlocks a mutex. Does nothing if passed a #NULL pointer. |
| * |
| * @returns #TRUE on success |
| */ |
| void |
| _dbus_mutex_unlock (DBusMutex *mutex) |
| { |
| if (mutex) |
| { |
| if (thread_functions.recursive_mutex_unlock) |
| (* thread_functions.recursive_mutex_unlock) (mutex); |
| else if (thread_functions.mutex_unlock) |
| (* thread_functions.mutex_unlock) (mutex); |
| } |
| } |
| |
| /** |
| * 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. |
| * |
| * @returns new mutex or #NULL |
| */ |
| DBusCondVar * |
| _dbus_condvar_new (void) |
| { |
| if (thread_functions.condvar_new) |
| return (* thread_functions.condvar_new) (); |
| else |
| return _DBUS_DUMMY_CONDVAR; |
| } |
| |
| |
| /** |
| * 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 allows the threading |
| * module to swap out dummy condvars for real a real condvar so libraries |
| * can initialize threads even after the D-Bus API has been used. |
| * |
| * @returns the location of a new condvar or #NULL on OOM |
| */ |
| |
| void |
| _dbus_condvar_new_at_location (DBusCondVar **location_p) |
| { |
| *location_p = _dbus_condvar_new(); |
| |
| if (thread_init_generation != _dbus_current_generation && *location_p) |
| { |
| if (!_dbus_list_append (&uninitialized_condvar_list, location_p)) |
| { |
| _dbus_condvar_free (*location_p); |
| *location_p = NULL; |
| } |
| } |
| } |
| |
| |
| /** |
| * Frees a conditional variable created with dbus_condvar_new(); does |
| * nothing if passed a #NULL pointer. |
| */ |
| void |
| _dbus_condvar_free (DBusCondVar *cond) |
| { |
| if (cond && thread_functions.condvar_free) |
| (* thread_functions.condvar_free) (cond); |
| } |
| |
| /** |
| * Frees a conditional variable and removes it from the |
| * uninitialized_condvar_list; |
| * does nothing if passed a #NULL pointer. |
| */ |
| void |
| _dbus_condvar_free_at_location (DBusCondVar **location_p) |
| { |
| if (location_p) |
| { |
| if (thread_init_generation != _dbus_current_generation) |
| _dbus_list_remove (&uninitialized_condvar_list, location_p); |
| |
| _dbus_condvar_free (*location_p); |
| } |
| } |
| |
| /** |
| * 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. |
| */ |
| void |
| _dbus_condvar_wait (DBusCondVar *cond, |
| DBusMutex *mutex) |
| { |
| if (cond && mutex && thread_functions.condvar_wait) |
| (* thread_functions.condvar_wait) (cond, mutex); |
| } |
| |
| /** |
| * 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. |
| * |
| * @param cond the condition variable |
| * @param mutex the mutex |
| * @param timeout_milliseconds the maximum time to wait |
| * @returns #FALSE if the timeout occurred, #TRUE if not |
| */ |
| dbus_bool_t |
| _dbus_condvar_wait_timeout (DBusCondVar *cond, |
| DBusMutex *mutex, |
| int timeout_milliseconds) |
| { |
| if (cond && mutex && thread_functions.condvar_wait) |
| return (* thread_functions.condvar_wait_timeout) (cond, mutex, timeout_milliseconds); |
| else |
| return TRUE; |
| } |
| |
| /** |
| * If there are threads waiting on the condition variable, wake |
| * up exactly one. |
| * Does nothing if passed a #NULL pointer. |
| */ |
| void |
| _dbus_condvar_wake_one (DBusCondVar *cond) |
| { |
| if (cond && thread_functions.condvar_wake_one) |
| (* thread_functions.condvar_wake_one) (cond); |
| } |
| |
| /** |
| * If there are threads waiting on the condition variable, wake |
| * up all of them. |
| * Does nothing if passed a #NULL pointer. |
| */ |
| void |
| _dbus_condvar_wake_all (DBusCondVar *cond) |
| { |
| if (cond && thread_functions.condvar_wake_all) |
| (* thread_functions.condvar_wake_all) (cond); |
| } |
| |
| static void |
| shutdown_global_locks (void *data) |
| { |
| DBusMutex ***locks = data; |
| int i; |
| |
| i = 0; |
| while (i < _DBUS_N_GLOBAL_LOCKS) |
| { |
| _dbus_mutex_free (*(locks[i])); |
| *(locks[i]) = NULL; |
| ++i; |
| } |
| |
| dbus_free (locks); |
| } |
| |
| static void |
| shutdown_uninitialized_locks (void *data) |
| { |
| _dbus_list_clear (&uninitialized_mutex_list); |
| _dbus_list_clear (&uninitialized_condvar_list); |
| } |
| |
| static dbus_bool_t |
| init_uninitialized_locks (void) |
| { |
| DBusList *link; |
| |
| _dbus_assert (thread_init_generation != _dbus_current_generation); |
| |
| link = uninitialized_mutex_list; |
| while (link != NULL) |
| { |
| DBusMutex **mp; |
| |
| mp = (DBusMutex **)link->data; |
| _dbus_assert (*mp == _DBUS_DUMMY_MUTEX); |
| |
| *mp = _dbus_mutex_new (); |
| if (*mp == NULL) |
| goto fail_mutex; |
| |
| link = _dbus_list_get_next_link (&uninitialized_mutex_list, link); |
| } |
| |
| link = uninitialized_condvar_list; |
| while (link != NULL) |
| { |
| DBusCondVar **cp; |
| |
| cp = (DBusCondVar **)link->data; |
| _dbus_assert (*cp == _DBUS_DUMMY_CONDVAR); |
| |
| *cp = _dbus_condvar_new (); |
| if (*cp == NULL) |
| goto fail_condvar; |
| |
| link = _dbus_list_get_next_link (&uninitialized_condvar_list, link); |
| } |
| |
| _dbus_list_clear (&uninitialized_mutex_list); |
| _dbus_list_clear (&uninitialized_condvar_list); |
| |
| if (!_dbus_register_shutdown_func (shutdown_uninitialized_locks, |
| NULL)) |
| goto fail_condvar; |
| |
| return TRUE; |
| |
| fail_condvar: |
| link = uninitialized_condvar_list; |
| while (link != NULL) |
| { |
| DBusCondVar **cp; |
| |
| cp = (DBusCondVar **)link->data; |
| |
| if (*cp != _DBUS_DUMMY_CONDVAR) |
| _dbus_condvar_free (*cp); |
| else |
| break; |
| |
| *cp = _DBUS_DUMMY_CONDVAR; |
| |
| link = _dbus_list_get_next_link (&uninitialized_condvar_list, link); |
| } |
| |
| fail_mutex: |
| link = uninitialized_mutex_list; |
| while (link != NULL) |
| { |
| DBusMutex **mp; |
| |
| mp = (DBusMutex **)link->data; |
| |
| if (*mp != _DBUS_DUMMY_MUTEX) |
| _dbus_mutex_free (*mp); |
| else |
| break; |
| |
| *mp = _DBUS_DUMMY_MUTEX; |
| |
| link = _dbus_list_get_next_link (&uninitialized_mutex_list, link); |
| } |
| |
| return FALSE; |
| } |
| |
| static dbus_bool_t |
| init_locks (void) |
| { |
| int i; |
| DBusMutex ***dynamic_global_locks; |
| |
| DBusMutex **global_locks[] = { |
| #define LOCK_ADDR(name) (& _dbus_lock_##name) |
| LOCK_ADDR (win_fds), |
| LOCK_ADDR (sid_atom_cache), |
| LOCK_ADDR (list), |
| LOCK_ADDR (connection_slots), |
| LOCK_ADDR (pending_call_slots), |
| LOCK_ADDR (server_slots), |
| LOCK_ADDR (message_slots), |
| #if !DBUS_USE_SYNC |
| LOCK_ADDR (atomic), |
| #endif |
| LOCK_ADDR (bus), |
| LOCK_ADDR (bus_datas), |
| LOCK_ADDR (shutdown_funcs), |
| LOCK_ADDR (system_users), |
| LOCK_ADDR (message_cache), |
| LOCK_ADDR (shared_connections), |
| LOCK_ADDR (machine_uuid) |
| #undef LOCK_ADDR |
| }; |
| |
| _dbus_assert (_DBUS_N_ELEMENTS (global_locks) == |
| _DBUS_N_GLOBAL_LOCKS); |
| |
| i = 0; |
| |
| dynamic_global_locks = dbus_new (DBusMutex**, _DBUS_N_GLOBAL_LOCKS); |
| if (dynamic_global_locks == NULL) |
| goto failed; |
| |
| while (i < _DBUS_N_ELEMENTS (global_locks)) |
| { |
| *global_locks[i] = _dbus_mutex_new (); |
| |
| if (*global_locks[i] == NULL) |
| goto failed; |
| |
| dynamic_global_locks[i] = global_locks[i]; |
| |
| ++i; |
| } |
| |
| if (!_dbus_register_shutdown_func (shutdown_global_locks, |
| dynamic_global_locks)) |
| goto failed; |
| |
| if (!init_uninitialized_locks ()) |
| goto failed; |
| |
| return TRUE; |
| |
| failed: |
| dbus_free (dynamic_global_locks); |
| |
| for (i = i - 1; i >= 0; i--) |
| { |
| _dbus_mutex_free (*global_locks[i]); |
| *global_locks[i] = NULL; |
| } |
| return FALSE; |
| } |
| |
| /** @} */ /* end of internals */ |
| |
| /** |
| * @defgroup DBusThreads Thread functions |
| * @ingroup DBus |
| * @brief dbus_threads_init() and dbus_threads_init_default() |
| * |
| * Functions and macros related to threads and thread locks. |
| * |
| * If threads are initialized, the D-Bus library has locks on all |
| * global data structures. In addition, each #DBusConnection has a |
| * lock, so only one thread at a time can touch the connection. (See |
| * @ref DBusConnection for more on connection locking.) |
| * |
| * Most other objects, however, do not have locks - they can only be |
| * used from a single thread at a time, unless you lock them yourself. |
| * For example, a #DBusMessage can't be modified from two threads |
| * at once. |
| * |
| * @{ |
| */ |
| |
| /** |
| * |
| * Initializes threads. If this function is not called, the D-Bus |
| * library will not lock any data structures. If it is called, D-Bus |
| * will do locking, at some cost in efficiency. Note that this |
| * function must be called BEFORE the second thread is started. |
| * |
| * Almost always, you should use dbus_threads_init_default() instead. |
| * The raw dbus_threads_init() is only useful if you require a |
| * particular thread implementation for some reason. |
| * |
| * A possible reason to use dbus_threads_init() rather than |
| * dbus_threads_init_default() is to insert debugging checks or print |
| * statements. |
| * |
| * dbus_threads_init() may be called more than once. The first one |
| * wins and subsequent calls are ignored. (Unless you use |
| * dbus_shutdown() to reset libdbus, which will let you re-init |
| * threads.) |
| * |
| * Either recursive or nonrecursive mutex functions must be specified, |
| * but not both. New code should provide only the recursive functions |
| * - specifying the nonrecursive ones is deprecated. |
| * |
| * Because this function effectively sets global state, all code |
| * running in a given application must agree on the thread |
| * implementation. Most code won't care which thread implementation is |
| * used, so there's no problem. However, usually libraries should not |
| * call dbus_threads_init() or dbus_threads_init_default(), instead |
| * leaving this policy choice to applications. |
| * |
| * The exception is for application frameworks (GLib, Qt, etc.) and |
| * D-Bus bindings based on application frameworks. These frameworks |
| * define a cross-platform thread abstraction and can assume |
| * applications using the framework are OK with using that thread |
| * abstraction. |
| * |
| * However, even these app frameworks may find it easier to simply call |
| * dbus_threads_init_default(), and there's no reason they shouldn't. |
| * |
| * @param functions functions for using threads |
| * @returns #TRUE on success, #FALSE if no memory |
| */ |
| dbus_bool_t |
| dbus_threads_init (const DBusThreadFunctions *functions) |
| { |
| dbus_bool_t mutex_set; |
| dbus_bool_t recursive_mutex_set; |
| |
| _dbus_assert (functions != NULL); |
| |
| /* these base functions are required. Future additions to |
| * DBusThreadFunctions may be optional. |
| */ |
| _dbus_assert (functions->mask & DBUS_THREAD_FUNCTIONS_CONDVAR_NEW_MASK); |
| _dbus_assert (functions->mask & DBUS_THREAD_FUNCTIONS_CONDVAR_FREE_MASK); |
| _dbus_assert (functions->mask & DBUS_THREAD_FUNCTIONS_CONDVAR_WAIT_MASK); |
| _dbus_assert (functions->mask & DBUS_THREAD_FUNCTIONS_CONDVAR_WAIT_TIMEOUT_MASK); |
| _dbus_assert (functions->mask & DBUS_THREAD_FUNCTIONS_CONDVAR_WAKE_ONE_MASK); |
| _dbus_assert (functions->mask & DBUS_THREAD_FUNCTIONS_CONDVAR_WAKE_ALL_MASK); |
| _dbus_assert (functions->condvar_new != NULL); |
| _dbus_assert (functions->condvar_free != NULL); |
| _dbus_assert (functions->condvar_wait != NULL); |
| _dbus_assert (functions->condvar_wait_timeout != NULL); |
| _dbus_assert (functions->condvar_wake_one != NULL); |
| _dbus_assert (functions->condvar_wake_all != NULL); |
| |
| /* Either the mutex function set or recursive mutex set needs |
| * to be available but not both |
| */ |
| mutex_set = (functions->mask & DBUS_THREAD_FUNCTIONS_MUTEX_NEW_MASK) && |
| (functions->mask & DBUS_THREAD_FUNCTIONS_MUTEX_FREE_MASK) && |
| (functions->mask & DBUS_THREAD_FUNCTIONS_MUTEX_LOCK_MASK) && |
| (functions->mask & DBUS_THREAD_FUNCTIONS_MUTEX_UNLOCK_MASK) && |
| functions->mutex_new && |
| functions->mutex_free && |
| functions->mutex_lock && |
| functions->mutex_unlock; |
| |
| recursive_mutex_set = |
| (functions->mask & DBUS_THREAD_FUNCTIONS_RECURSIVE_MUTEX_NEW_MASK) && |
| (functions->mask & DBUS_THREAD_FUNCTIONS_RECURSIVE_MUTEX_FREE_MASK) && |
| (functions->mask & DBUS_THREAD_FUNCTIONS_RECURSIVE_MUTEX_LOCK_MASK) && |
| (functions->mask & DBUS_THREAD_FUNCTIONS_RECURSIVE_MUTEX_UNLOCK_MASK) && |
| functions->recursive_mutex_new && |
| functions->recursive_mutex_free && |
| functions->recursive_mutex_lock && |
| functions->recursive_mutex_unlock; |
| |
| if (!(mutex_set || recursive_mutex_set)) |
| _dbus_assert_not_reached ("Either the nonrecusrive or recursive mutex " |
| "functions sets should be passed into " |
| "dbus_threads_init. Neither sets were passed."); |
| |
| if (mutex_set && recursive_mutex_set) |
| _dbus_assert_not_reached ("Either the nonrecusrive or recursive mutex " |
| "functions sets should be passed into " |
| "dbus_threads_init. Both sets were passed. " |
| "You most likely just want to set the recursive " |
| "mutex functions to avoid deadlocks in D-Bus."); |
| |
| /* Check that all bits in the mask actually are valid mask bits. |
| * ensures people won't write code that breaks when we add |
| * new bits. |
| */ |
| _dbus_assert ((functions->mask & ~DBUS_THREAD_FUNCTIONS_ALL_MASK) == 0); |
| |
| if (thread_init_generation != _dbus_current_generation) |
| thread_functions.mask = 0; /* allow re-init in new generation */ |
| |
| /* Silently allow multiple init |
| * First init wins and D-Bus will always use its threading system |
| */ |
| if (thread_functions.mask != 0) |
| return TRUE; |
| |
| thread_functions.mutex_new = functions->mutex_new; |
| thread_functions.mutex_free = functions->mutex_free; |
| thread_functions.mutex_lock = functions->mutex_lock; |
| thread_functions.mutex_unlock = functions->mutex_unlock; |
| |
| thread_functions.condvar_new = functions->condvar_new; |
| thread_functions.condvar_free = functions->condvar_free; |
| thread_functions.condvar_wait = functions->condvar_wait; |
| thread_functions.condvar_wait_timeout = functions->condvar_wait_timeout; |
| thread_functions.condvar_wake_one = functions->condvar_wake_one; |
| thread_functions.condvar_wake_all = functions->condvar_wake_all; |
| |
| if (functions->mask & DBUS_THREAD_FUNCTIONS_RECURSIVE_MUTEX_NEW_MASK) |
| thread_functions.recursive_mutex_new = functions->recursive_mutex_new; |
| |
| if (functions->mask & DBUS_THREAD_FUNCTIONS_RECURSIVE_MUTEX_FREE_MASK) |
| thread_functions.recursive_mutex_free = functions->recursive_mutex_free; |
| |
| if (functions->mask & DBUS_THREAD_FUNCTIONS_RECURSIVE_MUTEX_LOCK_MASK) |
| thread_functions.recursive_mutex_lock = functions->recursive_mutex_lock; |
| |
| if (functions->mask & DBUS_THREAD_FUNCTIONS_RECURSIVE_MUTEX_UNLOCK_MASK) |
| thread_functions.recursive_mutex_unlock = functions->recursive_mutex_unlock; |
| |
| thread_functions.mask = functions->mask; |
| |
| if (!init_locks ()) |
| return FALSE; |
| |
| thread_init_generation = _dbus_current_generation; |
| |
| return TRUE; |
| } |
| |
| |
| |
| /* Default thread implemenation */ |
| |
| /** |
| * |
| * Calls dbus_threads_init() with a default set of |
| * #DBusThreadFunctions appropriate for the platform. |
| * |
| * Most applications should use this rather than dbus_threads_init(). |
| * |
| * It's safe to call dbus_threads_init_default() as many times as you |
| * want, but only the first time will have an effect. |
| * |
| * dbus_shutdown() reverses the effects of this function when it |
| * resets all global state in libdbus. |
| * |
| * @returns #TRUE on success, #FALSE if not enough memory |
| */ |
| dbus_bool_t |
| dbus_threads_init_default (void) |
| { |
| return _dbus_threads_init_platform_specific (); |
| } |
| |
| |
| /** @} */ |
| |
| #ifdef DBUS_BUILD_TESTS |
| /** Fake mutex used for debugging */ |
| typedef struct DBusFakeMutex DBusFakeMutex; |
| /** Fake mutex used for debugging */ |
| struct DBusFakeMutex |
| { |
| dbus_bool_t locked; /**< Mutex is "locked" */ |
| }; |
| |
| static DBusMutex * dbus_fake_mutex_new (void); |
| static void dbus_fake_mutex_free (DBusMutex *mutex); |
| static dbus_bool_t dbus_fake_mutex_lock (DBusMutex *mutex); |
| static dbus_bool_t dbus_fake_mutex_unlock (DBusMutex *mutex); |
| static DBusCondVar* dbus_fake_condvar_new (void); |
| static void dbus_fake_condvar_free (DBusCondVar *cond); |
| static void dbus_fake_condvar_wait (DBusCondVar *cond, |
| DBusMutex *mutex); |
| static dbus_bool_t dbus_fake_condvar_wait_timeout (DBusCondVar *cond, |
| DBusMutex *mutex, |
| int timeout_msec); |
| static void dbus_fake_condvar_wake_one (DBusCondVar *cond); |
| static void dbus_fake_condvar_wake_all (DBusCondVar *cond); |
| |
| |
| static const DBusThreadFunctions fake_functions = |
| { |
| DBUS_THREAD_FUNCTIONS_MUTEX_NEW_MASK | |
| DBUS_THREAD_FUNCTIONS_MUTEX_FREE_MASK | |
| DBUS_THREAD_FUNCTIONS_MUTEX_LOCK_MASK | |
| DBUS_THREAD_FUNCTIONS_MUTEX_UNLOCK_MASK | |
| DBUS_THREAD_FUNCTIONS_CONDVAR_NEW_MASK | |
| DBUS_THREAD_FUNCTIONS_CONDVAR_FREE_MASK | |
| DBUS_THREAD_FUNCTIONS_CONDVAR_WAIT_MASK | |
| DBUS_THREAD_FUNCTIONS_CONDVAR_WAIT_TIMEOUT_MASK | |
| DBUS_THREAD_FUNCTIONS_CONDVAR_WAKE_ONE_MASK| |
| DBUS_THREAD_FUNCTIONS_CONDVAR_WAKE_ALL_MASK, |
| dbus_fake_mutex_new, |
| dbus_fake_mutex_free, |
| dbus_fake_mutex_lock, |
| dbus_fake_mutex_unlock, |
| dbus_fake_condvar_new, |
| dbus_fake_condvar_free, |
| dbus_fake_condvar_wait, |
| dbus_fake_condvar_wait_timeout, |
| dbus_fake_condvar_wake_one, |
| dbus_fake_condvar_wake_all |
| }; |
| |
| static DBusMutex * |
| dbus_fake_mutex_new (void) |
| { |
| DBusFakeMutex *mutex; |
| |
| mutex = dbus_new0 (DBusFakeMutex, 1); |
| |
| return (DBusMutex *)mutex; |
| } |
| |
| static void |
| dbus_fake_mutex_free (DBusMutex *mutex) |
| { |
| DBusFakeMutex *fake = (DBusFakeMutex*) mutex; |
| |
| _dbus_assert (!fake->locked); |
| |
| dbus_free (fake); |
| } |
| |
| static dbus_bool_t |
| dbus_fake_mutex_lock (DBusMutex *mutex) |
| { |
| DBusFakeMutex *fake = (DBusFakeMutex*) mutex; |
| |
| _dbus_assert (!fake->locked); |
| |
| fake->locked = TRUE; |
| |
| return TRUE; |
| } |
| |
| static dbus_bool_t |
| dbus_fake_mutex_unlock (DBusMutex *mutex) |
| { |
| DBusFakeMutex *fake = (DBusFakeMutex*) mutex; |
| |
| _dbus_assert (fake->locked); |
| |
| fake->locked = FALSE; |
| |
| return TRUE; |
| } |
| |
| static DBusCondVar* |
| dbus_fake_condvar_new (void) |
| { |
| return (DBusCondVar*) _dbus_strdup ("FakeCondvar"); |
| } |
| |
| static void |
| dbus_fake_condvar_free (DBusCondVar *cond) |
| { |
| dbus_free (cond); |
| } |
| |
| static void |
| dbus_fake_condvar_wait (DBusCondVar *cond, |
| DBusMutex *mutex) |
| { |
| |
| } |
| |
| static dbus_bool_t |
| dbus_fake_condvar_wait_timeout (DBusCondVar *cond, |
| DBusMutex *mutex, |
| int timeout_msec) |
| { |
| return TRUE; |
| } |
| |
| static void |
| dbus_fake_condvar_wake_one (DBusCondVar *cond) |
| { |
| |
| } |
| |
| static void |
| dbus_fake_condvar_wake_all (DBusCondVar *cond) |
| { |
| |
| } |
| |
| dbus_bool_t |
| _dbus_threads_init_debug (void) |
| { |
| #ifdef DBUS_WIN |
| return _dbus_threads_init_platform_specific(); |
| #else |
| return dbus_threads_init (&fake_functions); |
| #endif |
| } |
| |
| #endif /* DBUS_BUILD_TESTS */ |