25 #include "dbus-internals.h" 26 #include "dbus-connection-internal.h" 27 #include "dbus-message-internal.h" 28 #include "dbus-pending-call-internal.h" 29 #include "dbus-pending-call.h" 30 #include "dbus-list.h" 31 #include "dbus-threads.h" 32 #include "dbus-test.h" 53 #define CONNECTION_LOCK(connection) _dbus_connection_lock(connection) 57 #define CONNECTION_UNLOCK(connection) _dbus_connection_unlock(connection) 88 #ifdef DBUS_ENABLE_VERBOSE_MODE 89 static int enabled = -1;
91 _dbus_trace_ref (
"DBusPendingCall", pending_call, old_refcount,
92 new_refcount, why,
"DBUS_PENDING_CALL_TRACE", &enabled);
110 int timeout_milliseconds,
116 _dbus_assert (timeout_milliseconds >= 0 || timeout_milliseconds == -1);
118 if (timeout_milliseconds == -1)
119 timeout_milliseconds = _DBUS_DEFAULT_TIMEOUT_VALUE;
158 _dbus_pending_call_trace_ref (pending, 0, 1,
"new_unlocked");
183 _dbus_verbose (
" handing message %p (%s) to pending call serial %u\n",
188 "error" :
"other type",
193 pending->
reply = message;
214 notify_user_data_slot);
216 (* pending->
function) (pending, user_data);
362 "Did not receive a reply. Possible causes include: " 363 "the remote application did not send a reply, " 364 "the message bus security policy blocked the reply, " 365 "the reply timeout expired, or " 366 "the network connection was broken.");
371 if (reply_link ==
NULL)
399 _dbus_pending_call_trace_ref (pending, old_refcount, old_refcount + 1,
463 _dbus_pending_call_trace_ref (pending, old_refcount,
464 old_refcount - 1,
"unref_and_unlock");
468 if (old_refcount == 1)
469 _dbus_pending_call_last_unref (pending);
513 slot, data, free_data_func,
514 &old_free_func, &old_data);
522 (* old_free_func) (old_data);
581 _dbus_return_val_if_fail (pending !=
NULL,
NULL);
584 _dbus_pending_call_trace_ref (pending, old_refcount, old_refcount + 1,
601 _dbus_return_if_fail (pending !=
NULL);
604 _dbus_pending_call_trace_ref (pending, old_refcount, old_refcount - 1,
607 if (old_refcount == 1)
608 _dbus_pending_call_last_unref(pending);
629 _dbus_return_val_if_fail (pending !=
NULL,
FALSE);
635 user_data, free_user_data))
665 _dbus_return_if_fail (pending !=
NULL);
683 _dbus_return_val_if_fail (pending !=
NULL,
FALSE);
706 _dbus_return_val_if_fail (pending !=
NULL,
NULL);
712 message = pending->
reply;
717 _dbus_message_trace_ref (message, -1, -1,
"dbus_pending_call_steal_reply");
739 _dbus_return_if_fail (pending !=
NULL);
761 _dbus_return_val_if_fail (slot_p !=
NULL,
FALSE);
781 _dbus_return_if_fail (slot_p !=
NULL);
782 _dbus_return_if_fail (*slot_p >= 0);
808 _dbus_return_val_if_fail (pending !=
NULL,
FALSE);
809 _dbus_return_val_if_fail (slot >= 0,
FALSE);
832 _dbus_return_val_if_fail (pending !=
NULL,
NULL);
unsigned int dbus_uint32_t
A 32-bit unsigned integer on all platforms.
An atomic integer safe to increment or decrement from multiple threads.
void _dbus_pending_call_complete(DBusPendingCall *pending)
Calls notifier function for the pending call and sets the call to completed.
DBusMessage * dbus_message_ref(DBusMessage *message)
Increments the reference count of a DBusMessage.
DBusTimeout * _dbus_timeout_new(int interval, DBusTimeoutHandler handler, void *data, DBusFreeFunction free_data_function)
Creates a new DBusTimeout, enabled by default.
Internals of DBusTimeout.
#define NULL
A null pointer, defined appropriately for C or C++.
void(* DBusFreeFunction)(void *memory)
The type of a function which frees a block of memory.
void _dbus_connection_queue_synthesized_message_link(DBusConnection *connection, DBusList *link)
Adds a link + message to the incoming message queue.
DBusConnection * _dbus_pending_call_get_connection_unlocked(DBusPendingCall *pending)
Gets the connection associated with this pending call.
void dbus_free(void *memory)
Frees a block of memory previously allocated by dbus_malloc() or dbus_malloc0().
void(* DBusPendingCallNotifyFunction)(DBusPendingCall *pending, void *user_data)
Called when a pending call now has a reply available.
DBusMessage * dbus_pending_call_steal_reply(DBusPendingCall *pending)
Gets the reply, or returns NULL if none has been received yet.
dbus_bool_t _dbus_pending_call_set_data_unlocked(DBusPendingCall *pending, dbus_int32_t slot, void *data, DBusFreeFunction free_data_func)
Stores a pointer on a DBusPendingCall, along with an optional function to be used for freeing the dat...
DBusDataSlotList slot_list
Data stored by allocated integer ID.
#define _dbus_assert(condition)
Aborts with an error message if the condition is false.
void * data
Data stored at this element.
Implementation details of DBusPendingCall - all fields are private.
Implementation details of DBusConnection.
#define DBUS_MESSAGE_TYPE_ERROR
Message type of an error reply message, see dbus_message_get_type()
DBusList * _dbus_list_alloc_link(void *data)
Allocates a linked list node.
#define DBUS_MESSAGE_TYPE_METHOD_RETURN
Message type of a method return message, see dbus_message_get_type()
dbus_bool_t dbus_pending_call_set_notify(DBusPendingCall *pending, DBusPendingCallNotifyFunction function, void *user_data, DBusFreeFunction free_user_data)
Sets a notification function to be called when the reply is received or the pending call times out...
dbus_bool_t dbus_pending_call_set_data(DBusPendingCall *pending, dbus_int32_t slot, void *data, DBusFreeFunction free_data_func)
Stores a pointer on a DBusPendingCall, along with an optional function to be used for freeing the dat...
dbus_bool_t _dbus_pending_call_get_completed_unlocked(DBusPendingCall *pending)
Checks whether the pending call has received a reply yet, or not.
void _dbus_connection_block_pending_call(DBusPendingCall *pending)
Blocks until a pending call times out or gets a reply.
void * dbus_pending_call_get_data(DBusPendingCall *pending, dbus_int32_t slot)
Retrieves data previously set with dbus_pending_call_set_data().
void dbus_pending_call_free_data_slot(dbus_int32_t *slot_p)
Deallocates a global ID for DBusPendingCall data slots.
Internals of DBusMessage.
unsigned int timeout_added
Have added the timeout.
DBusConnection * connection
Connections we're associated with.
dbus_bool_t _dbus_pending_call_set_timeout_error_unlocked(DBusPendingCall *pending, DBusMessage *message, dbus_uint32_t serial)
Sets the reply message associated with the pending call to a timeout error.
dbus_bool_t dbus_pending_call_get_completed(DBusPendingCall *pending)
Checks whether the pending call has received a reply yet, or not.
#define dbus_new0(type, count)
Safe macro for using dbus_malloc0().
DBusList * timeout_link
Preallocated timeout response.
dbus_bool_t _dbus_pending_call_is_timeout_added_unlocked(DBusPendingCall *pending)
Checks to see if a timeout has been added.
dbus_uint32_t dbus_bool_t
A boolean, valid values are TRUE and FALSE.
DBusTimeout * timeout
Timeout.
void dbus_pending_call_cancel(DBusPendingCall *pending)
Cancels the pending call, such that any reply or error received will just be ignored.
dbus_int32_t _dbus_atomic_inc(DBusAtomic *atomic)
Atomically increments an integer.
dbus_bool_t _dbus_data_slot_list_set(DBusDataSlotAllocator *allocator, DBusDataSlotList *list, int slot, void *data, DBusFreeFunction free_data_func, DBusFreeFunction *old_free_func, void **old_data)
Stores a pointer in the data slot list, along with an optional function to be used for freeing the da...
void _dbus_timeout_unref(DBusTimeout *timeout)
Decrements the reference count of a DBusTimeout object and finalizes the object if the count reaches ...
#define DBUS_ERROR_NO_REPLY
No reply to a message expecting one, usually means a timeout occurred.
dbus_bool_t dbus_pending_call_allocate_data_slot(dbus_int32_t *slot_p)
Allocates an integer ID to be used for storing application-specific data on any DBusPendingCall.
DBusPendingCallNotifyFunction function
Notifier when reply arrives.
dbus_uint32_t dbus_message_get_reply_serial(DBusMessage *message)
Returns the serial that the message is a reply to or 0 if none.
DBusPendingCall * dbus_pending_call_ref(DBusPendingCall *pending)
Increments the reference count on a pending call.
dbus_uint32_t _dbus_pending_call_get_reply_serial_unlocked(DBusPendingCall *pending)
Gets the reply's serial number.
void * _dbus_data_slot_list_get(DBusDataSlotAllocator *allocator, DBusDataSlotList *list, int slot)
Retrieves data previously set with _dbus_data_slot_list_set_data().
#define CONNECTION_UNLOCK(connection)
shorter and more visible way to write _dbus_connection_unlock()
#define TRUE
Expands to "1".
void _dbus_data_slot_list_init(DBusDataSlotList *list)
Initializes a slot list.
Data structure that stores the actual user data set at a given slot.
void _dbus_list_free_link(DBusList *link)
Frees a linked list node allocated with _dbus_list_alloc_link.
void dbus_pending_call_unref(DBusPendingCall *pending)
Decrements the reference count on a pending call, freeing it if the count reaches 0...
An allocator that tracks a set of slot IDs.
#define DBUS_TIMEOUT_INFINITE
An integer constant representing an infinite timeout.
void _dbus_pending_call_queue_timeout_error_unlocked(DBusPendingCall *pending, DBusConnection *connection)
If the pending call hasn't been timed out, add its timeout error reply to the connection's incoming m...
void dbus_pending_call_block(DBusPendingCall *pending)
Block until the pending call is completed.
DBusPendingCall * _dbus_pending_call_new_unlocked(DBusConnection *connection, int timeout_milliseconds, DBusTimeoutHandler timeout_handler)
Creates a new pending reply object.
dbus_int32_t _dbus_atomic_dec(DBusAtomic *atomic)
Atomically decrement an integer.
void _dbus_pending_call_set_reply_unlocked(DBusPendingCall *pending, DBusMessage *message)
Sets the reply of a pending call with the given message, or if the message is NULL, by timing out the pending call.
unsigned int completed
TRUE if completed.
void _dbus_connection_remove_pending_call(DBusConnection *connection, DBusPendingCall *pending)
Removes a pending call from the connection, such that the pending reply will be ignored.
dbus_uint32_t reply_serial
Expected serial of reply.
#define FALSE
Expands to "0".
int dbus_message_get_type(DBusMessage *message)
Gets the type of a message.
#define _DBUS_LOCK_NAME(name)
Expands to name of a global lock variable.
void dbus_connection_unref(DBusConnection *connection)
Decrements the reference count of a DBusConnection, and finalizes it if the count reaches zero...
dbus_bool_t _dbus_data_slot_allocator_alloc(DBusDataSlotAllocator *allocator, dbus_int32_t *slot_id_p)
Allocates an integer ID to be used for storing data in a DBusDataSlotList.
DBusPendingCall * _dbus_pending_call_ref_unlocked(DBusPendingCall *pending)
Increments the reference count on a pending call, while the lock on its connection is already held...
DBUS_PRIVATE_EXPORT DBusConnection * _dbus_connection_ref_unlocked(DBusConnection *connection)
Increments the reference count of a DBusConnection.
int dbus_int32_t
A 32-bit signed integer on all platforms.
#define CONNECTION_LOCK(connection)
Internals of DBusPendingCall.
DBusTimeout * _dbus_pending_call_get_timeout_unlocked(DBusPendingCall *pending)
Retrives the timeout.
void _dbus_data_slot_allocator_free(DBusDataSlotAllocator *allocator, dbus_int32_t *slot_id_p)
Deallocates an ID previously allocated with _dbus_data_slot_allocator_alloc().
DBusAtomic refcount
reference count
void dbus_message_unref(DBusMessage *message)
Decrements the reference count of a DBusMessage, freeing the message if the count reaches 0...
void _dbus_pending_call_set_reply_serial_unlocked(DBusPendingCall *pending, dbus_uint32_t serial)
Sets the reply's serial number.
void _dbus_pending_call_unref_and_unlock(DBusPendingCall *pending)
Decrements the reference count on a pending call, freeing it if the count reaches 0...
void _dbus_pending_call_set_timeout_added_unlocked(DBusPendingCall *pending, dbus_bool_t is_added)
Sets wether the timeout has been added.
DBusConnection * _dbus_pending_call_get_connection_and_lock(DBusPendingCall *pending)
Gets the connection associated with this pending call.
void _dbus_data_slot_list_free(DBusDataSlotList *list)
Frees the data slot list and all data slots contained in it, calling application-provided free functi...
void _dbus_list_clear(DBusList **list)
Frees all links in the list and sets the list head to NULL.
dbus_bool_t(* DBusTimeoutHandler)(void *data)
function to run when the timeout is handled
DBusMessage * reply
Reply (after we've received it)
DBusMessage * dbus_message_new_error(DBusMessage *reply_to, const char *error_name, const char *error_message)
Creates a new message that is an error reply to another message.