2 * Server-side message queues
4 * Copyright (C) 2000 Alexandre Julliard
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
22 #include "wine/port.h"
30 #define WIN32_NO_STATUS
44 #define WM_NCMOUSEFIRST WM_NCMOUSEMOVE
45 #define WM_NCMOUSELAST (WM_NCMOUSEFIRST+(WM_MOUSELAST-WM_MOUSEFIRST))
47 enum message_kind { SEND_MESSAGE, POST_MESSAGE };
48 #define NB_MSG_KINDS (POST_MESSAGE+1)
53 struct list sender_entry; /* entry in sender list */
54 struct message *msg; /* message the result is for */
55 struct message_result *recv_next; /* next in receiver list */
56 struct msg_queue *sender; /* sender queue */
57 struct msg_queue *receiver; /* receiver queue */
58 int replied; /* has it been replied to? */
59 unsigned int result; /* reply result */
60 unsigned int error; /* error code to pass back to sender */
61 struct message *callback_msg; /* message to queue for callback */
62 void *data; /* message reply data */
63 unsigned int data_size; /* size of message reply data */
64 struct timeout_user *timeout; /* result timeout */
69 struct list entry; /* entry in message list */
70 enum message_type type; /* message type */
71 user_handle_t win; /* window handle */
72 unsigned int msg; /* message code */
73 unsigned long wparam; /* parameters */
74 unsigned long lparam; /* parameters */
75 unsigned long info; /* extra info */
76 int x; /* x position */
77 int y; /* y position */
78 unsigned int time; /* message time */
79 void *data; /* message data for sent messages */
80 unsigned int data_size; /* size of message data */
81 unsigned int unique_id; /* unique id for nested hw message waits */
82 struct message_result *result; /* result in sender queue */
87 struct list entry; /* entry in timer list */
88 struct timeval when; /* next expiration */
89 unsigned int rate; /* timer rate in ms */
90 user_handle_t win; /* window handle */
91 unsigned int msg; /* message to post */
92 unsigned long id; /* timer id */
93 unsigned long lparam; /* lparam for message */
98 struct object obj; /* object header */
99 struct desktop *desktop; /* desktop that this thread input belongs to */
100 user_handle_t focus; /* focus window */
101 user_handle_t capture; /* capture window */
102 user_handle_t active; /* active window */
103 user_handle_t menu_owner; /* current menu owner window */
104 user_handle_t move_size; /* current moving/resizing window */
105 user_handle_t caret; /* caret window */
106 rectangle_t caret_rect; /* caret rectangle */
107 int caret_hide; /* caret hide count */
108 int caret_state; /* caret on/off state */
109 struct list msg_list; /* list of hardware messages */
110 unsigned char keystate[256]; /* state of each key */
115 struct object obj; /* object header */
116 struct fd *fd; /* optional file descriptor to poll */
117 unsigned int wake_bits; /* wakeup bits */
118 unsigned int wake_mask; /* wakeup mask */
119 unsigned int changed_bits; /* changed wakeup bits */
120 unsigned int changed_mask; /* changed wakeup mask */
121 int paint_count; /* pending paint messages count */
122 int quit_message; /* is there a pending quit message? */
123 int exit_code; /* exit code of pending quit message */
124 struct list msg_list[NB_MSG_KINDS]; /* lists of messages */
125 struct list send_result; /* stack of sent messages waiting for result */
126 struct list callback_result; /* list of callback messages waiting for result */
127 struct message_result *recv_result; /* stack of received messages waiting for result */
128 struct list pending_timers; /* list of pending timers */
129 struct list expired_timers; /* list of expired timers */
130 unsigned long next_timer_id; /* id for the next timer with a 0 window */
131 struct timeout_user *timeout; /* timeout for next timer to expire */
132 struct thread_input *input; /* thread input descriptor */
133 struct hook_table *hooks; /* hook table */
134 struct timeval last_get_msg; /* time of last get message call */
137 static void msg_queue_dump( struct object *obj, int verbose );
138 static int msg_queue_add_queue( struct object *obj, struct wait_queue_entry *entry );
139 static void msg_queue_remove_queue( struct object *obj, struct wait_queue_entry *entry );
140 static int msg_queue_signaled( struct object *obj, struct thread *thread );
141 static int msg_queue_satisfied( struct object *obj, struct thread *thread );
142 static void msg_queue_destroy( struct object *obj );
143 static void msg_queue_poll_event( struct fd *fd, int event );
144 static void thread_input_dump( struct object *obj, int verbose );
145 static void thread_input_destroy( struct object *obj );
146 static void timer_callback( void *private );
148 static const struct object_ops msg_queue_ops =
150 sizeof(struct msg_queue), /* size */
151 msg_queue_dump, /* dump */
152 msg_queue_add_queue, /* add_queue */
153 msg_queue_remove_queue, /* remove_queue */
154 msg_queue_signaled, /* signaled */
155 msg_queue_satisfied, /* satisfied */
156 no_signal, /* signal */
157 no_get_fd, /* get_fd */
158 no_map_access, /* map_access */
159 no_lookup_name, /* lookup_name */
160 no_open_file, /* open_file */
161 no_close_handle, /* close_handle */
162 msg_queue_destroy /* destroy */
165 static const struct fd_ops msg_queue_fd_ops =
167 NULL, /* get_poll_events */
168 msg_queue_poll_event, /* poll_event */
169 no_flush, /* flush */
170 no_get_file_info, /* get_file_info */
171 no_queue_async, /* queue_async */
172 NULL, /* reselect_async */
173 no_cancel_async /* cancel async */
177 static const struct object_ops thread_input_ops =
179 sizeof(struct thread_input), /* size */
180 thread_input_dump, /* dump */
181 no_add_queue, /* add_queue */
182 NULL, /* remove_queue */
184 NULL, /* satisfied */
185 no_signal, /* signal */
186 no_get_fd, /* get_fd */
187 no_map_access, /* map_access */
188 no_lookup_name, /* lookup_name */
189 no_open_file, /* open_file */
190 no_close_handle, /* close_handle */
191 thread_input_destroy /* destroy */
194 /* pointer to input structure of foreground thread */
195 static struct thread_input *foreground_input;
196 static unsigned int last_input_time;
198 static void free_message( struct message *msg );
200 /* set the caret window in a given thread input */
201 static void set_caret_window( struct thread_input *input, user_handle_t win )
203 if (!win || win != input->caret)
205 input->caret_rect.left = 0;
206 input->caret_rect.top = 0;
207 input->caret_rect.right = 0;
208 input->caret_rect.bottom = 0;
211 input->caret_hide = 1;
212 input->caret_state = 0;
215 /* create a thread input object */
216 static struct thread_input *create_thread_input( struct thread *thread )
218 struct thread_input *input;
220 if ((input = alloc_object( &thread_input_ops )))
225 input->menu_owner = 0;
226 input->move_size = 0;
227 list_init( &input->msg_list );
228 set_caret_window( input, 0 );
229 memset( input->keystate, 0, sizeof(input->keystate) );
231 if (!(input->desktop = get_thread_desktop( thread, 0 /* FIXME: access rights */ )))
233 release_object( input );
240 /* release the thread input data of a given thread */
241 static inline void release_thread_input( struct thread *thread )
243 struct thread_input *input = thread->queue->input;
246 release_object( input );
247 thread->queue->input = NULL;
250 /* create a message queue object */
251 static struct msg_queue *create_msg_queue( struct thread *thread, struct thread_input *input )
253 struct msg_queue *queue;
256 if (!input && !(input = create_thread_input( thread ))) return NULL;
257 if ((queue = alloc_object( &msg_queue_ops )))
260 queue->wake_bits = 0;
261 queue->wake_mask = 0;
262 queue->changed_bits = 0;
263 queue->changed_mask = 0;
264 queue->paint_count = 0;
265 queue->quit_message = 0;
266 queue->recv_result = NULL;
267 queue->next_timer_id = 1;
268 queue->timeout = NULL;
269 queue->input = (struct thread_input *)grab_object( input );
271 queue->last_get_msg = current_time;
272 list_init( &queue->send_result );
273 list_init( &queue->callback_result );
274 list_init( &queue->pending_timers );
275 list_init( &queue->expired_timers );
276 for (i = 0; i < NB_MSG_KINDS; i++) list_init( &queue->msg_list[i] );
278 thread->queue = queue;
279 if (!thread->process->queue)
280 thread->process->queue = (struct msg_queue *)grab_object( queue );
282 release_object( input );
286 /* free the message queue of a thread at thread exit */
287 void free_msg_queue( struct thread *thread )
289 struct process *process = thread->process;
291 remove_thread_hooks( thread );
292 if (!thread->queue) return;
293 if (process->queue == thread->queue) /* is it the process main queue? */
295 release_object( process->queue );
296 process->queue = NULL;
297 if (process->idle_event)
299 set_event( process->idle_event );
300 release_object( process->idle_event );
301 process->idle_event = NULL;
304 release_object( thread->queue );
305 thread->queue = NULL;
308 /* get the hook table for a given thread */
309 struct hook_table *get_queue_hooks( struct thread *thread )
311 if (!thread->queue) return NULL;
312 return thread->queue->hooks;
315 /* set the hook table for a given thread, allocating the queue if needed */
316 void set_queue_hooks( struct thread *thread, struct hook_table *hooks )
318 struct msg_queue *queue = thread->queue;
319 if (!queue && !(queue = create_msg_queue( thread, NULL ))) return;
320 if (queue->hooks) release_object( queue->hooks );
321 queue->hooks = hooks;
324 /* check the queue status */
325 static inline int is_signaled( struct msg_queue *queue )
327 return ((queue->wake_bits & queue->wake_mask) || (queue->changed_bits & queue->changed_mask));
330 /* set some queue bits */
331 static inline void set_queue_bits( struct msg_queue *queue, unsigned int bits )
333 queue->wake_bits |= bits;
334 queue->changed_bits |= bits;
335 if (is_signaled( queue )) wake_up( &queue->obj, 0 );
338 /* clear some queue bits */
339 static inline void clear_queue_bits( struct msg_queue *queue, unsigned int bits )
341 queue->wake_bits &= ~bits;
342 queue->changed_bits &= ~bits;
345 /* check whether msg is a keyboard message */
346 static inline int is_keyboard_msg( struct message *msg )
348 return (msg->msg >= WM_KEYFIRST && msg->msg <= WM_KEYLAST);
351 /* check if message is matched by the filter */
352 static inline int check_msg_filter( unsigned int msg, unsigned int first, unsigned int last )
354 return (msg >= first && msg <= last);
357 /* check whether a message filter contains at least one potential hardware message */
358 static inline int filter_contains_hw_range( unsigned int first, unsigned int last )
360 /* hardware message ranges are (in numerical order):
361 * WM_NCMOUSEFIRST .. WM_NCMOUSELAST
362 * WM_KEYFIRST .. WM_KEYLAST
363 * WM_MOUSEFIRST .. WM_MOUSELAST
365 if (last < WM_NCMOUSEFIRST) return 0;
366 if (first > WM_NCMOUSELAST && last < WM_KEYFIRST) return 0;
367 if (first > WM_KEYLAST && last < WM_MOUSEFIRST) return 0;
368 if (first > WM_MOUSELAST) return 0;
372 /* get the QS_* bit corresponding to a given hardware message */
373 static inline int get_hardware_msg_bit( struct message *msg )
375 if (msg->msg == WM_MOUSEMOVE || msg->msg == WM_NCMOUSEMOVE) return QS_MOUSEMOVE;
376 if (is_keyboard_msg( msg )) return QS_KEY;
377 return QS_MOUSEBUTTON;
380 /* get the current thread queue, creating it if needed */
381 static inline struct msg_queue *get_current_queue(void)
383 struct msg_queue *queue = current->queue;
384 if (!queue) queue = create_msg_queue( current, NULL );
388 /* get a (pseudo-)unique id to tag hardware messages */
389 static inline unsigned int get_unique_id(void)
391 static unsigned int id;
392 if (!++id) id = 1; /* avoid an id of 0 */
396 /* try to merge a message with the last in the list; return 1 if successful */
397 static int merge_message( struct thread_input *input, const struct message *msg )
399 struct message *prev;
400 struct list *ptr = list_tail( &input->msg_list );
403 prev = LIST_ENTRY( ptr, struct message, entry );
404 if (prev->unique_id) return 0;
405 if (prev->result) return 0;
406 if (prev->win != msg->win) return 0;
407 if (prev->msg != msg->msg) return 0;
408 if (prev->type != msg->type) return 0;
409 /* now we can merge it */
410 prev->wparam = msg->wparam;
411 prev->lparam = msg->lparam;
414 prev->time = msg->time;
415 prev->info = msg->info;
419 /* free a result structure */
420 static void free_result( struct message_result *result )
422 if (result->timeout) remove_timeout_user( result->timeout );
423 free( result->data );
424 if (result->callback_msg) free_message( result->callback_msg );
428 /* remove the result from the sender list it is on */
429 static inline void remove_result_from_sender( struct message_result *result )
431 assert( result->sender );
433 list_remove( &result->sender_entry );
434 result->sender = NULL;
435 if (!result->receiver) free_result( result );
438 /* store the message result in the appropriate structure */
439 static void store_message_result( struct message_result *res, unsigned int result,
442 res->result = result;
447 remove_timeout_user( res->timeout );
452 if (res->callback_msg)
454 /* queue the callback message in the sender queue */
455 struct callback_msg_data *data = res->callback_msg->data;
456 data->result = result;
457 list_add_tail( &res->sender->msg_list[SEND_MESSAGE], &res->callback_msg->entry );
458 set_queue_bits( res->sender, QS_SENDMESSAGE );
459 res->callback_msg = NULL;
460 remove_result_from_sender( res );
464 /* wake sender queue if waiting on this result */
465 if (list_head(&res->sender->send_result) == &res->sender_entry)
466 set_queue_bits( res->sender, QS_SMRESULT );
472 /* free a message when deleting a queue or window */
473 static void free_message( struct message *msg )
475 struct message_result *result = msg->result;
481 result->receiver = NULL;
482 store_message_result( result, 0, STATUS_ACCESS_DENIED /*FIXME*/ );
484 else free_result( result );
490 /* remove (and free) a message from a message list */
491 static void remove_queue_message( struct msg_queue *queue, struct message *msg,
492 enum message_kind kind )
494 list_remove( &msg->entry );
498 if (list_empty( &queue->msg_list[kind] )) clear_queue_bits( queue, QS_SENDMESSAGE );
501 if (list_empty( &queue->msg_list[kind] ) && !queue->quit_message)
502 clear_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
508 /* message timed out without getting a reply */
509 static void result_timeout( void *private )
511 struct message_result *result = private;
513 assert( !result->replied );
515 result->timeout = NULL;
517 if (result->msg) /* not received yet */
519 struct message *msg = result->msg;
523 remove_queue_message( result->receiver, msg, SEND_MESSAGE );
524 result->receiver = NULL;
527 free_result( result );
532 store_message_result( result, 0, STATUS_TIMEOUT );
535 /* allocate and fill a message result structure */
536 static struct message_result *alloc_message_result( struct msg_queue *send_queue,
537 struct msg_queue *recv_queue,
538 struct message *msg, int timeout )
540 struct message_result *result = mem_alloc( sizeof(*result) );
544 result->sender = send_queue;
545 result->receiver = recv_queue;
548 result->data_size = 0;
549 result->timeout = NULL;
551 if (msg->type == MSG_CALLBACK)
553 struct message *callback_msg = mem_alloc( sizeof(*callback_msg) );
560 callback_msg->type = MSG_CALLBACK_RESULT;
561 callback_msg->win = msg->win;
562 callback_msg->msg = msg->msg;
563 callback_msg->wparam = 0;
564 callback_msg->lparam = 0;
565 callback_msg->time = get_tick_count();
568 callback_msg->info = 0;
569 callback_msg->result = NULL;
570 /* steal the data from the original message */
571 callback_msg->data = msg->data;
572 callback_msg->data_size = msg->data_size;
576 result->callback_msg = callback_msg;
577 list_add_head( &send_queue->callback_result, &result->sender_entry );
581 result->callback_msg = NULL;
582 list_add_head( &send_queue->send_result, &result->sender_entry );
587 struct timeval when = current_time;
588 add_timeout( &when, timeout );
589 result->timeout = add_timeout_user( &when, result_timeout, result );
595 /* receive a message, removing it from the sent queue */
596 static void receive_message( struct msg_queue *queue, struct message *msg,
597 struct get_message_reply *reply )
599 struct message_result *result = msg->result;
601 reply->total = msg->data_size;
602 if (msg->data_size > get_reply_max_size())
604 set_error( STATUS_BUFFER_OVERFLOW );
607 reply->type = msg->type;
608 reply->win = msg->win;
609 reply->msg = msg->msg;
610 reply->wparam = msg->wparam;
611 reply->lparam = msg->lparam;
614 reply->time = msg->time;
615 reply->info = msg->info;
617 if (msg->data) set_reply_data_ptr( msg->data, msg->data_size );
619 list_remove( &msg->entry );
620 /* put the result on the receiver result stack */
624 result->recv_next = queue->recv_result;
625 queue->recv_result = result;
628 if (list_empty( &queue->msg_list[SEND_MESSAGE] )) clear_queue_bits( queue, QS_SENDMESSAGE );
631 /* set the result of the current received message */
632 static void reply_message( struct msg_queue *queue, unsigned int result,
633 unsigned int error, int remove, const void *data, data_size_t len )
635 struct message_result *res = queue->recv_result;
639 queue->recv_result = res->recv_next;
640 res->receiver = NULL;
641 if (!res->sender) /* no one waiting for it */
649 if (len && (res->data = memdup( data, len ))) res->data_size = len;
650 store_message_result( res, result, error );
654 /* retrieve a posted message */
655 static int get_posted_message( struct msg_queue *queue, user_handle_t win,
656 unsigned int first, unsigned int last, unsigned int flags,
657 struct get_message_reply *reply )
661 /* check against the filters */
662 LIST_FOR_EACH_ENTRY( msg, &queue->msg_list[POST_MESSAGE], struct message, entry )
664 if (win && msg->win && msg->win != win && !is_child_window( win, msg->win )) continue;
665 if (!check_msg_filter( msg->msg, first, last )) continue;
666 goto found; /* found one */
670 /* return it to the app */
672 reply->total = msg->data_size;
673 if (msg->data_size > get_reply_max_size())
675 set_error( STATUS_BUFFER_OVERFLOW );
678 reply->type = msg->type;
679 reply->win = msg->win;
680 reply->msg = msg->msg;
681 reply->wparam = msg->wparam;
682 reply->lparam = msg->lparam;
685 reply->time = msg->time;
686 reply->info = msg->info;
688 if (flags & PM_REMOVE)
692 set_reply_data_ptr( msg->data, msg->data_size );
696 remove_queue_message( queue, msg, POST_MESSAGE );
698 else if (msg->data) set_reply_data( msg->data, msg->data_size );
703 static int get_quit_message( struct msg_queue *queue, unsigned int flags,
704 struct get_message_reply *reply )
706 if (queue->quit_message)
709 reply->type = MSG_POSTED;
711 reply->msg = WM_QUIT;
712 reply->wparam = queue->exit_code;
716 reply->time = get_tick_count();
719 if (flags & PM_REMOVE)
721 queue->quit_message = 0;
722 if (list_empty( &queue->msg_list[POST_MESSAGE] ))
723 clear_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
731 /* empty a message list and free all the messages */
732 static void empty_msg_list( struct list *list )
736 while ((ptr = list_head( list )) != NULL)
738 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
739 list_remove( &msg->entry );
744 /* cleanup all pending results when deleting a queue */
745 static void cleanup_results( struct msg_queue *queue )
749 while ((entry = list_head( &queue->send_result )) != NULL)
751 remove_result_from_sender( LIST_ENTRY( entry, struct message_result, sender_entry ) );
754 while ((entry = list_head( &queue->callback_result )) != NULL)
756 remove_result_from_sender( LIST_ENTRY( entry, struct message_result, sender_entry ) );
759 while (queue->recv_result)
760 reply_message( queue, 0, STATUS_ACCESS_DENIED /*FIXME*/, 1, NULL, 0 );
763 /* check if the thread owning the queue is hung (not checking for messages) */
764 static int is_queue_hung( struct msg_queue *queue )
766 struct wait_queue_entry *entry;
768 if (current_time.tv_sec - queue->last_get_msg.tv_sec <= 5)
769 return 0; /* less than 5 seconds since last get message -> not hung */
771 LIST_FOR_EACH_ENTRY( entry, &queue->obj.wait_queue, struct wait_queue_entry, entry )
773 if (entry->thread->queue == queue)
774 return 0; /* thread is waiting on queue -> not hung */
779 static int msg_queue_add_queue( struct object *obj, struct wait_queue_entry *entry )
781 struct msg_queue *queue = (struct msg_queue *)obj;
782 struct process *process = entry->thread->process;
784 /* a thread can only wait on its own queue */
785 if (entry->thread->queue != queue)
787 set_error( STATUS_ACCESS_DENIED );
790 /* if waiting on the main process queue, set the idle event */
791 if (process->queue == queue)
793 if (process->idle_event) set_event( process->idle_event );
795 if (queue->fd && list_empty( &obj->wait_queue )) /* first on the queue */
796 set_fd_events( queue->fd, POLLIN );
797 add_queue( obj, entry );
801 static void msg_queue_remove_queue(struct object *obj, struct wait_queue_entry *entry )
803 struct msg_queue *queue = (struct msg_queue *)obj;
804 struct process *process = entry->thread->process;
806 remove_queue( obj, entry );
807 if (queue->fd && list_empty( &obj->wait_queue )) /* last on the queue is gone */
808 set_fd_events( queue->fd, 0 );
810 assert( entry->thread->queue == queue );
812 /* if waiting on the main process queue, reset the idle event */
813 if (process->queue == queue)
815 if (process->idle_event) reset_event( process->idle_event );
819 static void msg_queue_dump( struct object *obj, int verbose )
821 struct msg_queue *queue = (struct msg_queue *)obj;
822 fprintf( stderr, "Msg queue bits=%x mask=%x\n",
823 queue->wake_bits, queue->wake_mask );
826 static int msg_queue_signaled( struct object *obj, struct thread *thread )
828 struct msg_queue *queue = (struct msg_queue *)obj;
833 if ((ret = check_fd_events( queue->fd, POLLIN )))
834 /* stop waiting on select() if we are signaled */
835 set_fd_events( queue->fd, 0 );
836 else if (!list_empty( &obj->wait_queue ))
837 /* restart waiting on poll() if we are no longer signaled */
838 set_fd_events( queue->fd, POLLIN );
840 return ret || is_signaled( queue );
843 static int msg_queue_satisfied( struct object *obj, struct thread *thread )
845 struct msg_queue *queue = (struct msg_queue *)obj;
846 queue->wake_mask = 0;
847 queue->changed_mask = 0;
848 return 0; /* Not abandoned */
851 static void msg_queue_destroy( struct object *obj )
853 struct msg_queue *queue = (struct msg_queue *)obj;
857 cleanup_results( queue );
858 for (i = 0; i < NB_MSG_KINDS; i++) empty_msg_list( &queue->msg_list[i] );
860 while ((ptr = list_head( &queue->pending_timers )))
862 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
863 list_remove( &timer->entry );
866 while ((ptr = list_head( &queue->expired_timers )))
868 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
869 list_remove( &timer->entry );
872 if (queue->timeout) remove_timeout_user( queue->timeout );
873 if (queue->input) release_object( queue->input );
874 if (queue->hooks) release_object( queue->hooks );
875 if (queue->fd) release_object( queue->fd );
878 static void msg_queue_poll_event( struct fd *fd, int event )
880 struct msg_queue *queue = get_fd_user( fd );
881 assert( queue->obj.ops == &msg_queue_ops );
883 if (event & (POLLERR | POLLHUP)) set_fd_events( fd, -1 );
884 wake_up( &queue->obj, 0 );
887 static void thread_input_dump( struct object *obj, int verbose )
889 struct thread_input *input = (struct thread_input *)obj;
890 fprintf( stderr, "Thread input focus=%p capture=%p active=%p\n",
891 input->focus, input->capture, input->active );
894 static void thread_input_destroy( struct object *obj )
896 struct thread_input *input = (struct thread_input *)obj;
898 if (foreground_input == input) foreground_input = NULL;
899 empty_msg_list( &input->msg_list );
900 if (input->desktop) release_object( input->desktop );
903 /* fix the thread input data when a window is destroyed */
904 static inline void thread_input_cleanup_window( struct msg_queue *queue, user_handle_t window )
906 struct thread_input *input = queue->input;
908 if (window == input->focus) input->focus = 0;
909 if (window == input->capture) input->capture = 0;
910 if (window == input->active) input->active = 0;
911 if (window == input->menu_owner) input->menu_owner = 0;
912 if (window == input->move_size) input->move_size = 0;
913 if (window == input->caret) set_caret_window( input, 0 );
916 /* check if the specified window can be set in the input data of a given queue */
917 static int check_queue_input_window( struct msg_queue *queue, user_handle_t window )
919 struct thread *thread;
922 if (!window) return 1; /* we can always clear the data */
924 if ((thread = get_window_thread( window )))
926 ret = (queue->input == thread->queue->input);
927 if (!ret) set_error( STATUS_ACCESS_DENIED );
928 release_object( thread );
930 else set_error( STATUS_INVALID_HANDLE );
935 /* make sure the specified thread has a queue */
936 int init_thread_queue( struct thread *thread )
938 if (thread->queue) return 1;
939 return (create_msg_queue( thread, NULL ) != NULL);
942 /* attach two thread input data structures */
943 int attach_thread_input( struct thread *thread_from, struct thread *thread_to )
945 struct desktop *desktop;
946 struct thread_input *input;
948 if (!thread_to->queue && !(thread_to->queue = create_msg_queue( thread_to, NULL ))) return 0;
949 if (!(desktop = get_thread_desktop( thread_from, 0 ))) return 0;
950 input = (struct thread_input *)grab_object( thread_to->queue->input );
951 if (input->desktop != desktop)
953 set_error( STATUS_ACCESS_DENIED );
954 release_object( input );
955 release_object( desktop );
958 release_object( desktop );
960 if (thread_from->queue)
962 release_thread_input( thread_from );
963 thread_from->queue->input = input;
967 if (!(thread_from->queue = create_msg_queue( thread_from, input ))) return 0;
969 memset( input->keystate, 0, sizeof(input->keystate) );
973 /* detach two thread input data structures */
974 void detach_thread_input( struct thread *thread_from )
976 struct thread_input *input;
978 if ((input = create_thread_input( thread_from )))
980 release_thread_input( thread_from );
981 thread_from->queue->input = input;
986 /* set the next timer to expire */
987 static void set_next_timer( struct msg_queue *queue )
993 remove_timeout_user( queue->timeout );
994 queue->timeout = NULL;
996 if ((ptr = list_head( &queue->pending_timers )))
998 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
999 queue->timeout = add_timeout_user( &timer->when, timer_callback, queue );
1001 /* set/clear QS_TIMER bit */
1002 if (list_empty( &queue->expired_timers ))
1003 clear_queue_bits( queue, QS_TIMER );
1005 set_queue_bits( queue, QS_TIMER );
1008 /* find a timer from its window and id */
1009 static struct timer *find_timer( struct msg_queue *queue, user_handle_t win,
1010 unsigned int msg, unsigned long id )
1014 /* we need to search both lists */
1016 LIST_FOR_EACH( ptr, &queue->pending_timers )
1018 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1019 if (timer->win == win && timer->msg == msg && timer->id == id) return timer;
1021 LIST_FOR_EACH( ptr, &queue->expired_timers )
1023 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1024 if (timer->win == win && timer->msg == msg && timer->id == id) return timer;
1029 /* callback for the next timer expiration */
1030 static void timer_callback( void *private )
1032 struct msg_queue *queue = private;
1035 queue->timeout = NULL;
1036 /* move on to the next timer */
1037 ptr = list_head( &queue->pending_timers );
1039 list_add_tail( &queue->expired_timers, ptr );
1040 set_next_timer( queue );
1043 /* link a timer at its rightful place in the queue list */
1044 static void link_timer( struct msg_queue *queue, struct timer *timer )
1048 for (ptr = queue->pending_timers.next; ptr != &queue->pending_timers; ptr = ptr->next)
1050 struct timer *t = LIST_ENTRY( ptr, struct timer, entry );
1051 if (!time_before( &t->when, &timer->when )) break;
1053 list_add_before( ptr, &timer->entry );
1056 /* remove a timer from the queue timer list and free it */
1057 static void free_timer( struct msg_queue *queue, struct timer *timer )
1059 list_remove( &timer->entry );
1061 set_next_timer( queue );
1064 /* restart an expired timer */
1065 static void restart_timer( struct msg_queue *queue, struct timer *timer )
1067 list_remove( &timer->entry );
1068 while (!time_before( ¤t_time, &timer->when )) add_timeout( &timer->when, timer->rate );
1069 link_timer( queue, timer );
1070 set_next_timer( queue );
1073 /* find an expired timer matching the filtering parameters */
1074 static struct timer *find_expired_timer( struct msg_queue *queue, user_handle_t win,
1075 unsigned int get_first, unsigned int get_last,
1080 LIST_FOR_EACH( ptr, &queue->expired_timers )
1082 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1083 if (win && timer->win != win) continue;
1084 if (check_msg_filter( timer->msg, get_first, get_last ))
1086 if (remove) restart_timer( queue, timer );
1094 static struct timer *set_timer( struct msg_queue *queue, unsigned int rate )
1096 struct timer *timer = mem_alloc( sizeof(*timer) );
1099 timer->rate = max( rate, 1 );
1100 timer->when = current_time;
1101 add_timeout( &timer->when, rate );
1102 link_timer( queue, timer );
1103 /* check if we replaced the next timer */
1104 if (list_head( &queue->pending_timers ) == &timer->entry) set_next_timer( queue );
1109 /* change the input key state for a given key */
1110 static void set_input_key_state( struct thread_input *input, unsigned char key, int down )
1114 if (!(input->keystate[key] & 0x80)) input->keystate[key] ^= 0x01;
1115 input->keystate[key] |= 0x80;
1117 else input->keystate[key] &= ~0x80;
1120 /* update the input key state for a keyboard message */
1121 static void update_input_key_state( struct thread_input *input, const struct message *msg )
1124 int down = 0, extended;
1128 case WM_LBUTTONDOWN:
1132 set_input_key_state( input, VK_LBUTTON, down );
1134 case WM_MBUTTONDOWN:
1138 set_input_key_state( input, VK_MBUTTON, down );
1140 case WM_RBUTTONDOWN:
1144 set_input_key_state( input, VK_RBUTTON, down );
1146 case WM_XBUTTONDOWN:
1150 if (msg->wparam == XBUTTON1) set_input_key_state( input, VK_XBUTTON1, down );
1151 else if (msg->wparam == XBUTTON2) set_input_key_state( input, VK_XBUTTON2, down );
1159 key = (unsigned char)msg->wparam;
1160 extended = ((msg->lparam >> 16) & KF_EXTENDED) != 0;
1161 set_input_key_state( input, key, down );
1165 set_input_key_state( input, extended ? VK_RSHIFT : VK_LSHIFT, down );
1168 set_input_key_state( input, extended ? VK_RCONTROL : VK_LCONTROL, down );
1171 set_input_key_state( input, extended ? VK_RMENU : VK_LMENU, down );
1175 set_input_key_state( input, VK_CONTROL, down );
1179 set_input_key_state( input, VK_MENU, down );
1183 set_input_key_state( input, VK_SHIFT, down );
1190 /* release the hardware message currently being processed by the given thread */
1191 static void release_hardware_message( struct msg_queue *queue, unsigned int hw_id,
1192 int remove, user_handle_t new_win )
1194 struct thread_input *input = queue->input;
1195 struct message *msg;
1197 LIST_FOR_EACH_ENTRY( msg, &input->msg_list, struct message, entry )
1199 if (msg->unique_id == hw_id) break;
1201 if (&msg->entry == &input->msg_list) return; /* not found */
1203 /* clear the queue bit for that message */
1204 if (remove || new_win)
1206 struct message *other;
1209 clr_bit = get_hardware_msg_bit( msg );
1210 LIST_FOR_EACH_ENTRY( other, &input->msg_list, struct message, entry )
1212 if (other != msg && get_hardware_msg_bit( other ) == clr_bit)
1218 if (clr_bit) clear_queue_bits( queue, clr_bit );
1221 if (new_win) /* set the new window */
1223 struct thread *owner = get_window_thread( new_win );
1226 if (owner->queue->input == input)
1229 set_queue_bits( owner->queue, get_hardware_msg_bit( msg ));
1232 release_object( owner );
1237 update_input_key_state( input, msg );
1238 list_remove( &msg->entry );
1239 free_message( msg );
1243 /* find the window that should receive a given hardware message */
1244 static user_handle_t find_hardware_message_window( struct thread_input *input, struct message *msg,
1245 unsigned int *msg_code )
1247 user_handle_t win = 0;
1249 *msg_code = msg->msg;
1250 if (is_keyboard_msg( msg ))
1252 if (input && !(win = input->focus))
1254 win = input->active;
1255 if (*msg_code < WM_SYSKEYDOWN) *msg_code += WM_SYSKEYDOWN - WM_KEYDOWN;
1258 else /* mouse message */
1260 if (!input || !(win = input->capture))
1262 if (!(win = msg->win) || !is_window_visible( win ))
1264 if (input) win = window_from_point( input->desktop, msg->x, msg->y );
1271 /* queue a hardware message into a given thread input */
1272 static void queue_hardware_message( struct msg_queue *queue, struct message *msg )
1275 struct thread *thread;
1276 struct thread_input *input = queue ? queue->input : foreground_input;
1277 unsigned int msg_code;
1279 last_input_time = get_tick_count();
1280 win = find_hardware_message_window( input, msg, &msg_code );
1281 if (!win || !(thread = get_window_thread(win)))
1283 if (input) update_input_key_state( input, msg );
1287 input = thread->queue->input;
1289 if (msg->msg == WM_MOUSEMOVE && merge_message( input, msg )) free( msg );
1292 msg->unique_id = 0; /* will be set once we return it to the app */
1293 list_add_tail( &input->msg_list, &msg->entry );
1294 set_queue_bits( thread->queue, get_hardware_msg_bit(msg) );
1296 release_object( thread );
1299 /* check message filter for a hardware message */
1300 static int check_hw_message_filter( user_handle_t win, unsigned int msg_code,
1301 user_handle_t filter_win, unsigned int first, unsigned int last )
1303 if (msg_code >= WM_KEYFIRST && msg_code <= WM_KEYLAST)
1305 /* we can only test the window for a keyboard message since the
1306 * dest window for a mouse message depends on hittest */
1307 if (filter_win && win != filter_win && !is_child_window( filter_win, win ))
1309 /* the message code is final for a keyboard message, we can simply check it */
1310 return check_msg_filter( msg_code, first, last );
1312 else /* mouse message */
1314 /* we need to check all possible values that the message can have in the end */
1316 if (check_msg_filter( msg_code, first, last )) return 1;
1317 if (msg_code == WM_MOUSEWHEEL) return 0; /* no other possible value for this one */
1319 /* all other messages can become non-client messages */
1320 if (check_msg_filter( msg_code + (WM_NCMOUSEFIRST - WM_MOUSEFIRST), first, last )) return 1;
1322 /* clicks can become double-clicks or non-client double-clicks */
1323 if (msg_code == WM_LBUTTONDOWN || msg_code == WM_MBUTTONDOWN ||
1324 msg_code == WM_RBUTTONDOWN || msg_code == WM_XBUTTONDOWN)
1326 if (check_msg_filter( msg_code + (WM_LBUTTONDBLCLK - WM_LBUTTONDOWN), first, last )) return 1;
1327 if (check_msg_filter( msg_code + (WM_NCLBUTTONDBLCLK - WM_LBUTTONDOWN), first, last )) return 1;
1334 /* find a hardware message for the given queue */
1335 static int get_hardware_message( struct thread *thread, unsigned int hw_id, user_handle_t filter_win,
1336 unsigned int first, unsigned int last, struct get_message_reply *reply )
1338 struct thread_input *input = thread->queue->input;
1339 struct thread *win_thread;
1342 int clear_bits, got_one = 0;
1343 unsigned int msg_code;
1345 ptr = list_head( &input->msg_list );
1350 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1351 if (msg->unique_id == hw_id) break;
1352 ptr = list_next( &input->msg_list, ptr );
1354 if (!ptr) ptr = list_head( &input->msg_list );
1355 else ptr = list_next( &input->msg_list, ptr ); /* start from the next one */
1358 if (ptr == list_head( &input->msg_list ))
1359 clear_bits = QS_KEY | QS_MOUSEMOVE | QS_MOUSEBUTTON;
1361 clear_bits = 0; /* don't clear bits if we don't go through the whole list */
1365 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1366 ptr = list_next( &input->msg_list, ptr );
1367 win = find_hardware_message_window( input, msg, &msg_code );
1368 if (!win || !(win_thread = get_window_thread( win )))
1370 /* no window at all, remove it */
1371 update_input_key_state( input, msg );
1372 list_remove( &msg->entry );
1373 free_message( msg );
1376 if (win_thread != thread)
1378 if (win_thread->queue->input == input)
1380 /* wake the other thread */
1381 set_queue_bits( win_thread->queue, get_hardware_msg_bit(msg) );
1386 /* for another thread input, drop it */
1387 update_input_key_state( input, msg );
1388 list_remove( &msg->entry );
1389 free_message( msg );
1391 release_object( win_thread );
1394 release_object( win_thread );
1396 /* if we already got a message for another thread, or if it doesn't
1397 * match the filter we skip it */
1398 if (got_one || !check_hw_message_filter( win, msg_code, filter_win, first, last ))
1400 clear_bits &= ~get_hardware_msg_bit( msg );
1403 /* now we can return it */
1404 if (!msg->unique_id) msg->unique_id = get_unique_id();
1405 reply->type = MSG_HARDWARE;
1407 reply->msg = msg_code;
1408 reply->wparam = msg->wparam;
1409 reply->lparam = msg->lparam;
1412 reply->time = msg->time;
1413 reply->info = msg->info;
1414 reply->hw_id = msg->unique_id;
1417 /* nothing found, clear the hardware queue bits */
1418 clear_queue_bits( thread->queue, clear_bits );
1422 /* increment (or decrement if 'incr' is negative) the queue paint count */
1423 void inc_queue_paint_count( struct thread *thread, int incr )
1425 struct msg_queue *queue = thread->queue;
1429 if ((queue->paint_count += incr) < 0) queue->paint_count = 0;
1431 if (queue->paint_count)
1432 set_queue_bits( queue, QS_PAINT );
1434 clear_queue_bits( queue, QS_PAINT );
1438 /* remove all messages and timers belonging to a certain window */
1439 void queue_cleanup_window( struct thread *thread, user_handle_t win )
1441 struct msg_queue *queue = thread->queue;
1449 ptr = list_head( &queue->pending_timers );
1452 struct list *next = list_next( &queue->pending_timers, ptr );
1453 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1454 if (timer->win == win) free_timer( queue, timer );
1457 ptr = list_head( &queue->expired_timers );
1460 struct list *next = list_next( &queue->expired_timers, ptr );
1461 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1462 if (timer->win == win) free_timer( queue, timer );
1466 /* remove messages */
1467 for (i = 0; i < NB_MSG_KINDS; i++)
1469 struct list *ptr, *next;
1471 LIST_FOR_EACH_SAFE( ptr, next, &queue->msg_list[i] )
1473 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1474 if (msg->win == win) remove_queue_message( queue, msg, i );
1478 thread_input_cleanup_window( queue, win );
1481 /* post a message to a window; used by socket handling */
1482 void post_message( user_handle_t win, unsigned int message,
1483 unsigned long wparam, unsigned long lparam )
1485 struct message *msg;
1486 struct thread *thread = get_window_thread( win );
1488 if (!thread) return;
1490 if (thread->queue && (msg = mem_alloc( sizeof(*msg) )))
1492 msg->type = MSG_POSTED;
1493 msg->win = get_user_full_handle( win );
1495 msg->wparam = wparam;
1496 msg->lparam = lparam;
1497 msg->time = get_tick_count();
1505 list_add_tail( &thread->queue->msg_list[POST_MESSAGE], &msg->entry );
1506 set_queue_bits( thread->queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
1508 release_object( thread );
1511 /* post a win event */
1512 void post_win_event( struct thread *thread, unsigned int event,
1513 user_handle_t win, unsigned int object_id,
1514 unsigned int child_id, void *hook_proc,
1515 const WCHAR *module, data_size_t module_size,
1518 struct message *msg;
1520 if (thread->queue && (msg = mem_alloc( sizeof(*msg) )))
1522 struct winevent_msg_data *data;
1524 msg->type = MSG_WINEVENT;
1525 msg->win = get_user_full_handle( win );
1527 msg->wparam = object_id;
1528 msg->lparam = child_id;
1529 msg->time = get_tick_count();
1535 if ((data = malloc( sizeof(*data) + module_size )))
1538 data->tid = get_thread_id( current );
1539 data->hook_proc = hook_proc;
1540 memcpy( data + 1, module, module_size );
1543 msg->data_size = sizeof(*data) + module_size;
1545 if (debug_level > 1)
1546 fprintf( stderr, "post_win_event: tid %04x event %04x win %p object_id %d child_id %d\n",
1547 get_thread_id(thread), event, win, object_id, child_id );
1548 list_add_tail( &thread->queue->msg_list[SEND_MESSAGE], &msg->entry );
1549 set_queue_bits( thread->queue, QS_SENDMESSAGE );
1556 /* get the message queue of the current thread */
1557 DECL_HANDLER(get_msg_queue)
1559 struct msg_queue *queue = get_current_queue();
1562 if (queue) reply->handle = alloc_handle( current->process, queue, SYNCHRONIZE, 0 );
1566 /* set the file descriptor associated to the current thread queue */
1567 DECL_HANDLER(set_queue_fd)
1569 struct msg_queue *queue = get_current_queue();
1573 if (queue->fd) /* fd can only be set once */
1575 set_error( STATUS_ACCESS_DENIED );
1578 if (!(file = get_file_obj( current->process, req->handle, SYNCHRONIZE ))) return;
1580 if ((unix_fd = get_file_unix_fd( file )) != -1)
1582 if ((unix_fd = dup( unix_fd )) != -1)
1583 queue->fd = create_anonymous_fd( &msg_queue_fd_ops, unix_fd, &queue->obj );
1587 release_object( file );
1591 /* set the current message queue wakeup mask */
1592 DECL_HANDLER(set_queue_mask)
1594 struct msg_queue *queue = get_current_queue();
1598 queue->wake_mask = req->wake_mask;
1599 queue->changed_mask = req->changed_mask;
1600 reply->wake_bits = queue->wake_bits;
1601 reply->changed_bits = queue->changed_bits;
1602 if (is_signaled( queue ))
1604 /* if skip wait is set, do what would have been done in the subsequent wait */
1605 if (req->skip_wait) msg_queue_satisfied( &queue->obj, current );
1606 else wake_up( &queue->obj, 0 );
1612 /* get the current message queue status */
1613 DECL_HANDLER(get_queue_status)
1615 struct msg_queue *queue = current->queue;
1618 reply->wake_bits = queue->wake_bits;
1619 reply->changed_bits = queue->changed_bits;
1620 if (req->clear) queue->changed_bits = 0;
1622 else reply->wake_bits = reply->changed_bits = 0;
1626 /* send a message to a thread queue */
1627 DECL_HANDLER(send_message)
1629 struct message *msg;
1630 struct msg_queue *send_queue = get_current_queue();
1631 struct msg_queue *recv_queue = NULL;
1632 struct thread *thread = NULL;
1634 if (!(thread = get_thread_from_id( req->id ))) return;
1636 if (!(recv_queue = thread->queue))
1638 set_error( STATUS_INVALID_PARAMETER );
1639 release_object( thread );
1642 if ((req->flags & SEND_MSG_ABORT_IF_HUNG) && is_queue_hung(recv_queue))
1644 set_error( STATUS_TIMEOUT );
1645 release_object( thread );
1649 if ((msg = mem_alloc( sizeof(*msg) )))
1651 msg->type = req->type;
1652 msg->win = get_user_full_handle( req->win );
1653 msg->msg = req->msg;
1654 msg->wparam = req->wparam;
1655 msg->lparam = req->lparam;
1656 msg->time = get_tick_count();
1662 msg->data_size = get_req_data_size();
1664 if (msg->data_size && !(msg->data = memdup( get_req_data(), msg->data_size )))
1667 release_object( thread );
1673 case MSG_OTHER_PROCESS:
1677 if (!(msg->result = alloc_message_result( send_queue, recv_queue, msg, req->timeout )))
1679 free_message( msg );
1684 list_add_tail( &recv_queue->msg_list[SEND_MESSAGE], &msg->entry );
1685 set_queue_bits( recv_queue, QS_SENDMESSAGE );
1688 list_add_tail( &recv_queue->msg_list[POST_MESSAGE], &msg->entry );
1689 set_queue_bits( recv_queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
1691 case MSG_HARDWARE: /* should use send_hardware_message instead */
1692 case MSG_CALLBACK_RESULT: /* cannot send this one */
1694 set_error( STATUS_INVALID_PARAMETER );
1699 release_object( thread );
1702 /* send a hardware message to a thread queue */
1703 DECL_HANDLER(send_hardware_message)
1705 struct message *msg;
1706 struct msg_queue *recv_queue = NULL;
1707 struct thread *thread = NULL;
1711 if (!(thread = get_thread_from_id( req->id ))) return;
1714 if (thread && !(recv_queue = thread->queue))
1716 set_error( STATUS_INVALID_PARAMETER );
1717 release_object( thread );
1721 if ((msg = mem_alloc( sizeof(*msg) )))
1723 msg->type = MSG_HARDWARE;
1724 msg->win = get_user_full_handle( req->win );
1725 msg->msg = req->msg;
1726 msg->wparam = req->wparam;
1727 msg->lparam = req->lparam;
1728 msg->time = req->time;
1731 msg->info = req->info;
1735 queue_hardware_message( recv_queue, msg );
1737 if (thread) release_object( thread );
1740 /* post a quit message to the current queue */
1741 DECL_HANDLER(post_quit_message)
1743 struct msg_queue *queue = get_current_queue();
1748 queue->quit_message = 1;
1749 queue->exit_code = req->exit_code;
1750 set_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
1753 /* get a message from the current queue */
1754 DECL_HANDLER(get_message)
1756 struct timer *timer;
1758 struct msg_queue *queue = get_current_queue();
1759 user_handle_t get_win = get_user_full_handle( req->get_win );
1760 unsigned int filter = req->flags >> 16;
1762 reply->active_hooks = get_active_hooks();
1765 queue->last_get_msg = current_time;
1766 if (!filter) filter = QS_ALLINPUT;
1768 /* first check for sent messages */
1769 if ((ptr = list_head( &queue->msg_list[SEND_MESSAGE] )))
1771 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1772 receive_message( queue, msg, reply );
1776 /* clear changed bits so we can wait on them if we don't find a message */
1777 if (filter & QS_POSTMESSAGE)
1779 queue->changed_bits &= ~(QS_POSTMESSAGE | QS_HOTKEY | QS_TIMER);
1780 if (req->get_first == 0 && req->get_last == ~0U) queue->changed_bits &= ~QS_ALLPOSTMESSAGE;
1782 if (filter & QS_INPUT) queue->changed_bits &= ~QS_INPUT;
1783 if (filter & QS_PAINT) queue->changed_bits &= ~QS_PAINT;
1785 /* then check for posted messages */
1786 if ((filter & QS_POSTMESSAGE) &&
1787 get_posted_message( queue, get_win, req->get_first, req->get_last, req->flags, reply ))
1790 /* only check for quit messages if not posted messages pending.
1791 * note: the quit message isn't filtered */
1792 if (get_quit_message( queue, req->flags, reply ))
1795 /* then check for any raw hardware message */
1796 if ((filter & QS_INPUT) &&
1797 filter_contains_hw_range( req->get_first, req->get_last ) &&
1798 get_hardware_message( current, req->hw_id, get_win, req->get_first, req->get_last, reply ))
1801 /* now check for WM_PAINT */
1802 if ((filter & QS_PAINT) &&
1803 queue->paint_count &&
1804 check_msg_filter( WM_PAINT, req->get_first, req->get_last ) &&
1805 (reply->win = find_window_to_repaint( get_win, current )))
1807 reply->type = MSG_POSTED;
1808 reply->msg = WM_PAINT;
1813 reply->time = get_tick_count();
1818 /* now check for timer */
1819 if ((filter & QS_TIMER) &&
1820 (timer = find_expired_timer( queue, get_win, req->get_first,
1821 req->get_last, (req->flags & PM_REMOVE) )))
1823 reply->type = MSG_POSTED;
1824 reply->win = timer->win;
1825 reply->msg = timer->msg;
1826 reply->wparam = timer->id;
1827 reply->lparam = timer->lparam;
1830 reply->time = get_tick_count();
1835 set_error( STATUS_PENDING ); /* FIXME */
1839 /* reply to a sent message */
1840 DECL_HANDLER(reply_message)
1842 if (!current->queue) set_error( STATUS_ACCESS_DENIED );
1843 else if (current->queue->recv_result)
1844 reply_message( current->queue, req->result, 0, req->remove,
1845 get_req_data(), get_req_data_size() );
1849 /* accept the current hardware message */
1850 DECL_HANDLER(accept_hardware_message)
1853 release_hardware_message( current->queue, req->hw_id, req->remove, req->new_win );
1855 set_error( STATUS_ACCESS_DENIED );
1859 /* retrieve the reply for the last message sent */
1860 DECL_HANDLER(get_message_reply)
1862 struct message_result *result;
1864 struct msg_queue *queue = current->queue;
1868 set_error( STATUS_PENDING );
1871 if (!(entry = list_head( &queue->send_result ))) return; /* no reply ready */
1873 result = LIST_ENTRY( entry, struct message_result, sender_entry );
1874 if (result->replied || req->cancel)
1876 if (result->replied)
1878 reply->result = result->result;
1879 set_error( result->error );
1882 data_size_t data_len = min( result->data_size, get_reply_max_size() );
1883 set_reply_data_ptr( result->data, data_len );
1884 result->data = NULL;
1885 result->data_size = 0;
1888 remove_result_from_sender( result );
1890 entry = list_head( &queue->send_result );
1891 if (!entry) clear_queue_bits( queue, QS_SMRESULT );
1894 result = LIST_ENTRY( entry, struct message_result, sender_entry );
1895 if (!result->replied) clear_queue_bits( queue, QS_SMRESULT );
1899 else set_error( STATUS_ACCESS_DENIED );
1903 /* set a window timer */
1904 DECL_HANDLER(set_win_timer)
1906 struct timer *timer;
1907 struct msg_queue *queue;
1908 struct thread *thread = NULL;
1909 user_handle_t win = 0;
1910 unsigned long id = req->id;
1914 if (!(win = get_user_full_handle( req->win )) || !(thread = get_window_thread( win )))
1916 set_error( STATUS_INVALID_HANDLE );
1919 if (thread->process != current->process)
1921 release_object( thread );
1922 set_error( STATUS_ACCESS_DENIED );
1925 queue = thread->queue;
1926 /* remove it if it existed already */
1927 if ((timer = find_timer( queue, win, req->msg, id ))) free_timer( queue, timer );
1931 queue = get_current_queue();
1932 /* find a free id for it */
1935 id = queue->next_timer_id;
1936 if (++queue->next_timer_id >= 0x10000) queue->next_timer_id = 1;
1938 while (find_timer( queue, 0, req->msg, id ));
1941 if ((timer = set_timer( queue, req->rate )))
1944 timer->msg = req->msg;
1946 timer->lparam = req->lparam;
1949 if (thread) release_object( thread );
1952 /* kill a window timer */
1953 DECL_HANDLER(kill_win_timer)
1955 struct timer *timer;
1956 struct thread *thread;
1957 user_handle_t win = 0;
1961 if (!(win = get_user_full_handle( req->win )) || !(thread = get_window_thread( win )))
1963 set_error( STATUS_INVALID_HANDLE );
1966 if (thread->process != current->process)
1968 release_object( thread );
1969 set_error( STATUS_ACCESS_DENIED );
1973 else thread = (struct thread *)grab_object( current );
1975 if (thread->queue && (timer = find_timer( thread->queue, win, req->msg, req->id )))
1976 free_timer( thread->queue, timer );
1978 set_error( STATUS_INVALID_PARAMETER );
1980 release_object( thread );
1984 /* attach (or detach) thread inputs */
1985 DECL_HANDLER(attach_thread_input)
1987 struct thread *thread_from = get_thread_from_id( req->tid_from );
1988 struct thread *thread_to = get_thread_from_id( req->tid_to );
1990 if (!thread_from || !thread_to)
1992 if (thread_from) release_object( thread_from );
1993 if (thread_to) release_object( thread_to );
1996 if (thread_from != thread_to)
1998 if (req->attach) attach_thread_input( thread_from, thread_to );
2001 if (thread_from->queue && thread_to->queue &&
2002 thread_from->queue->input == thread_to->queue->input)
2003 detach_thread_input( thread_from );
2005 set_error( STATUS_ACCESS_DENIED );
2008 else set_error( STATUS_ACCESS_DENIED );
2009 release_object( thread_from );
2010 release_object( thread_to );
2014 /* get thread input data */
2015 DECL_HANDLER(get_thread_input)
2017 struct thread *thread = NULL;
2018 struct thread_input *input;
2022 if (!(thread = get_thread_from_id( req->tid ))) return;
2023 input = thread->queue ? thread->queue->input : NULL;
2025 else input = foreground_input; /* get the foreground thread info */
2029 reply->focus = input->focus;
2030 reply->capture = input->capture;
2031 reply->active = input->active;
2032 reply->menu_owner = input->menu_owner;
2033 reply->move_size = input->move_size;
2034 reply->caret = input->caret;
2035 reply->rect = input->caret_rect;
2042 reply->menu_owner = 0;
2043 reply->move_size = 0;
2045 reply->rect.left = reply->rect.top = reply->rect.right = reply->rect.bottom = 0;
2047 /* foreground window is active window of foreground thread */
2048 reply->foreground = foreground_input ? foreground_input->active : 0;
2049 if (thread) release_object( thread );
2053 /* retrieve queue keyboard state for a given thread */
2054 DECL_HANDLER(get_key_state)
2056 struct thread *thread;
2057 struct thread_input *input;
2059 if (!(thread = get_thread_from_id( req->tid ))) return;
2060 input = thread->queue ? thread->queue->input : NULL;
2063 if (req->key >= 0) reply->state = input->keystate[req->key & 0xff];
2064 set_reply_data( input->keystate, min( get_reply_max_size(), sizeof(input->keystate) ));
2066 release_object( thread );
2070 /* set queue keyboard state for a given thread */
2071 DECL_HANDLER(set_key_state)
2073 struct thread *thread = NULL;
2074 struct thread_input *input;
2076 if (!(thread = get_thread_from_id( req->tid ))) return;
2077 input = thread->queue ? thread->queue->input : NULL;
2080 data_size_t size = min( sizeof(input->keystate), get_req_data_size() );
2081 if (size) memcpy( input->keystate, get_req_data(), size );
2083 release_object( thread );
2087 /* set the system foreground window */
2088 DECL_HANDLER(set_foreground_window)
2090 struct thread *thread;
2091 struct msg_queue *queue = get_current_queue();
2093 reply->previous = foreground_input ? foreground_input->active : 0;
2094 reply->send_msg_old = (reply->previous && foreground_input != queue->input);
2095 reply->send_msg_new = FALSE;
2097 if (is_top_level_window( req->handle ) &&
2098 ((thread = get_window_thread( req->handle ))))
2100 foreground_input = thread->queue->input;
2101 reply->send_msg_new = (foreground_input != queue->input);
2102 release_object( thread );
2104 else set_win32_error( ERROR_INVALID_WINDOW_HANDLE );
2108 /* set the current thread focus window */
2109 DECL_HANDLER(set_focus_window)
2111 struct msg_queue *queue = get_current_queue();
2113 reply->previous = 0;
2114 if (queue && check_queue_input_window( queue, req->handle ))
2116 reply->previous = queue->input->focus;
2117 queue->input->focus = get_user_full_handle( req->handle );
2122 /* set the current thread active window */
2123 DECL_HANDLER(set_active_window)
2125 struct msg_queue *queue = get_current_queue();
2127 reply->previous = 0;
2128 if (queue && check_queue_input_window( queue, req->handle ))
2130 if (!req->handle || make_window_active( req->handle ))
2132 reply->previous = queue->input->active;
2133 queue->input->active = get_user_full_handle( req->handle );
2135 else set_error( STATUS_INVALID_HANDLE );
2140 /* set the current thread capture window */
2141 DECL_HANDLER(set_capture_window)
2143 struct msg_queue *queue = get_current_queue();
2145 reply->previous = reply->full_handle = 0;
2146 if (queue && check_queue_input_window( queue, req->handle ))
2148 struct thread_input *input = queue->input;
2150 reply->previous = input->capture;
2151 input->capture = get_user_full_handle( req->handle );
2152 input->menu_owner = (req->flags & CAPTURE_MENU) ? input->capture : 0;
2153 input->move_size = (req->flags & CAPTURE_MOVESIZE) ? input->capture : 0;
2154 reply->full_handle = input->capture;
2159 /* Set the current thread caret window */
2160 DECL_HANDLER(set_caret_window)
2162 struct msg_queue *queue = get_current_queue();
2164 reply->previous = 0;
2165 if (queue && check_queue_input_window( queue, req->handle ))
2167 struct thread_input *input = queue->input;
2169 reply->previous = input->caret;
2170 reply->old_rect = input->caret_rect;
2171 reply->old_hide = input->caret_hide;
2172 reply->old_state = input->caret_state;
2174 set_caret_window( input, get_user_full_handle(req->handle) );
2175 input->caret_rect.right = input->caret_rect.left + req->width;
2176 input->caret_rect.bottom = input->caret_rect.top + req->height;
2181 /* Set the current thread caret information */
2182 DECL_HANDLER(set_caret_info)
2184 struct msg_queue *queue = get_current_queue();
2185 struct thread_input *input;
2188 input = queue->input;
2189 reply->full_handle = input->caret;
2190 reply->old_rect = input->caret_rect;
2191 reply->old_hide = input->caret_hide;
2192 reply->old_state = input->caret_state;
2194 if (req->handle && get_user_full_handle(req->handle) != input->caret)
2196 set_error( STATUS_ACCESS_DENIED );
2199 if (req->flags & SET_CARET_POS)
2201 input->caret_rect.right += req->x - input->caret_rect.left;
2202 input->caret_rect.bottom += req->y - input->caret_rect.top;
2203 input->caret_rect.left = req->x;
2204 input->caret_rect.top = req->y;
2206 if (req->flags & SET_CARET_HIDE)
2208 input->caret_hide += req->hide;
2209 if (input->caret_hide < 0) input->caret_hide = 0;
2211 if (req->flags & SET_CARET_STATE)
2213 if (req->state == -1) input->caret_state = !input->caret_state;
2214 else input->caret_state = !!req->state;
2219 /* get the time of the last input event */
2220 DECL_HANDLER(get_last_input_time)
2222 reply->time = last_input_time;