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 error; /* error code to pass back to sender */
60 lparam_t result; /* reply result */
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 lparam_t wparam; /* parameters */
74 lparam_t lparam; /* parameters */
75 unsigned int time; /* message time */
76 void *data; /* message data for sent messages */
77 unsigned int data_size; /* size of message data */
78 unsigned int unique_id; /* unique id for nested hw message waits */
79 struct message_result *result; /* result in sender queue */
84 struct list entry; /* entry in timer list */
85 timeout_t when; /* next expiration */
86 unsigned int rate; /* timer rate in ms */
87 user_handle_t win; /* window handle */
88 unsigned int msg; /* message to post */
89 lparam_t id; /* timer id */
90 lparam_t lparam; /* lparam for message */
95 struct object obj; /* object header */
96 struct desktop *desktop; /* desktop that this thread input belongs to */
97 user_handle_t focus; /* focus window */
98 user_handle_t capture; /* capture window */
99 user_handle_t active; /* active window */
100 user_handle_t menu_owner; /* current menu owner window */
101 user_handle_t move_size; /* current moving/resizing window */
102 user_handle_t caret; /* caret window */
103 rectangle_t caret_rect; /* caret rectangle */
104 int caret_hide; /* caret hide count */
105 int caret_state; /* caret on/off state */
106 struct list msg_list; /* list of hardware messages */
107 unsigned char keystate[256]; /* state of each key */
112 struct object obj; /* object header */
113 struct fd *fd; /* optional file descriptor to poll */
114 unsigned int wake_bits; /* wakeup bits */
115 unsigned int wake_mask; /* wakeup mask */
116 unsigned int changed_bits; /* changed wakeup bits */
117 unsigned int changed_mask; /* changed wakeup mask */
118 int paint_count; /* pending paint messages count */
119 int quit_message; /* is there a pending quit message? */
120 int exit_code; /* exit code of pending quit message */
121 struct list msg_list[NB_MSG_KINDS]; /* lists of messages */
122 struct list send_result; /* stack of sent messages waiting for result */
123 struct list callback_result; /* list of callback messages waiting for result */
124 struct message_result *recv_result; /* stack of received messages waiting for result */
125 struct list pending_timers; /* list of pending timers */
126 struct list expired_timers; /* list of expired timers */
127 lparam_t next_timer_id; /* id for the next timer with a 0 window */
128 struct timeout_user *timeout; /* timeout for next timer to expire */
129 struct thread_input *input; /* thread input descriptor */
130 struct hook_table *hooks; /* hook table */
131 timeout_t last_get_msg; /* time of last get message call */
134 static void msg_queue_dump( struct object *obj, int verbose );
135 static int msg_queue_add_queue( struct object *obj, struct wait_queue_entry *entry );
136 static void msg_queue_remove_queue( struct object *obj, struct wait_queue_entry *entry );
137 static int msg_queue_signaled( struct object *obj, struct thread *thread );
138 static int msg_queue_satisfied( struct object *obj, struct thread *thread );
139 static void msg_queue_destroy( struct object *obj );
140 static void msg_queue_poll_event( struct fd *fd, int event );
141 static void thread_input_dump( struct object *obj, int verbose );
142 static void thread_input_destroy( struct object *obj );
143 static void timer_callback( void *private );
145 static const struct object_ops msg_queue_ops =
147 sizeof(struct msg_queue), /* size */
148 msg_queue_dump, /* dump */
149 no_get_type, /* get_type */
150 msg_queue_add_queue, /* add_queue */
151 msg_queue_remove_queue, /* remove_queue */
152 msg_queue_signaled, /* signaled */
153 msg_queue_satisfied, /* satisfied */
154 no_signal, /* signal */
155 no_get_fd, /* get_fd */
156 no_map_access, /* map_access */
157 default_get_sd, /* get_sd */
158 default_set_sd, /* set_sd */
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 */
170 NULL, /* get_fd_type */
172 NULL, /* queue_async */
173 NULL, /* reselect_async */
174 NULL /* cancel async */
178 static const struct object_ops thread_input_ops =
180 sizeof(struct thread_input), /* size */
181 thread_input_dump, /* dump */
182 no_get_type, /* get_type */
183 no_add_queue, /* add_queue */
184 NULL, /* remove_queue */
186 NULL, /* satisfied */
187 no_signal, /* signal */
188 no_get_fd, /* get_fd */
189 no_map_access, /* map_access */
190 default_get_sd, /* get_sd */
191 default_set_sd, /* set_sd */
192 no_lookup_name, /* lookup_name */
193 no_open_file, /* open_file */
194 no_close_handle, /* close_handle */
195 thread_input_destroy /* destroy */
198 /* pointer to input structure of foreground thread */
199 static struct thread_input *foreground_input;
200 static unsigned int last_input_time;
202 static void free_message( struct message *msg );
204 /* set the caret window in a given thread input */
205 static void set_caret_window( struct thread_input *input, user_handle_t win )
207 if (!win || win != input->caret)
209 input->caret_rect.left = 0;
210 input->caret_rect.top = 0;
211 input->caret_rect.right = 0;
212 input->caret_rect.bottom = 0;
215 input->caret_hide = 1;
216 input->caret_state = 0;
219 /* create a thread input object */
220 static struct thread_input *create_thread_input( struct thread *thread )
222 struct thread_input *input;
224 if ((input = alloc_object( &thread_input_ops )))
229 input->menu_owner = 0;
230 input->move_size = 0;
231 list_init( &input->msg_list );
232 set_caret_window( input, 0 );
233 memset( input->keystate, 0, sizeof(input->keystate) );
235 if (!(input->desktop = get_thread_desktop( thread, 0 /* FIXME: access rights */ )))
237 release_object( input );
244 /* release the thread input data of a given thread */
245 static inline void release_thread_input( struct thread *thread )
247 struct thread_input *input = thread->queue->input;
250 release_object( input );
251 thread->queue->input = NULL;
254 /* create a message queue object */
255 static struct msg_queue *create_msg_queue( struct thread *thread, struct thread_input *input )
257 struct msg_queue *queue;
260 if (!input && !(input = create_thread_input( thread ))) return NULL;
261 if ((queue = alloc_object( &msg_queue_ops )))
264 queue->wake_bits = 0;
265 queue->wake_mask = 0;
266 queue->changed_bits = 0;
267 queue->changed_mask = 0;
268 queue->paint_count = 0;
269 queue->quit_message = 0;
270 queue->recv_result = NULL;
271 queue->next_timer_id = 0x7fff;
272 queue->timeout = NULL;
273 queue->input = (struct thread_input *)grab_object( input );
275 queue->last_get_msg = current_time;
276 list_init( &queue->send_result );
277 list_init( &queue->callback_result );
278 list_init( &queue->pending_timers );
279 list_init( &queue->expired_timers );
280 for (i = 0; i < NB_MSG_KINDS; i++) list_init( &queue->msg_list[i] );
282 thread->queue = queue;
283 if (!thread->process->queue)
284 thread->process->queue = (struct msg_queue *)grab_object( queue );
286 release_object( input );
290 /* free the message queue of a thread at thread exit */
291 void free_msg_queue( struct thread *thread )
293 struct process *process = thread->process;
295 remove_thread_hooks( thread );
296 if (!thread->queue) return;
297 if (process->queue == thread->queue) /* is it the process main queue? */
299 release_object( process->queue );
300 process->queue = NULL;
301 if (process->idle_event)
303 set_event( process->idle_event );
304 release_object( process->idle_event );
305 process->idle_event = NULL;
308 release_object( thread->queue );
309 thread->queue = NULL;
312 /* get the hook table for a given thread */
313 struct hook_table *get_queue_hooks( struct thread *thread )
315 if (!thread->queue) return NULL;
316 return thread->queue->hooks;
319 /* set the hook table for a given thread, allocating the queue if needed */
320 void set_queue_hooks( struct thread *thread, struct hook_table *hooks )
322 struct msg_queue *queue = thread->queue;
323 if (!queue && !(queue = create_msg_queue( thread, NULL ))) return;
324 if (queue->hooks) release_object( queue->hooks );
325 queue->hooks = hooks;
328 /* check the queue status */
329 static inline int is_signaled( struct msg_queue *queue )
331 return ((queue->wake_bits & queue->wake_mask) || (queue->changed_bits & queue->changed_mask));
334 /* set some queue bits */
335 static inline void set_queue_bits( struct msg_queue *queue, unsigned int bits )
337 queue->wake_bits |= bits;
338 queue->changed_bits |= bits;
339 if (is_signaled( queue )) wake_up( &queue->obj, 0 );
342 /* clear some queue bits */
343 static inline void clear_queue_bits( struct msg_queue *queue, unsigned int bits )
345 queue->wake_bits &= ~bits;
346 queue->changed_bits &= ~bits;
349 /* check whether msg is a keyboard message */
350 static inline int is_keyboard_msg( struct message *msg )
352 return (msg->msg >= WM_KEYFIRST && msg->msg <= WM_KEYLAST);
355 /* check if message is matched by the filter */
356 static inline int check_msg_filter( unsigned int msg, unsigned int first, unsigned int last )
358 return (msg >= first && msg <= last);
361 /* check whether a message filter contains at least one potential hardware message */
362 static inline int filter_contains_hw_range( unsigned int first, unsigned int last )
364 /* hardware message ranges are (in numerical order):
365 * WM_NCMOUSEFIRST .. WM_NCMOUSELAST
366 * WM_KEYFIRST .. WM_KEYLAST
367 * WM_MOUSEFIRST .. WM_MOUSELAST
369 if (last < WM_NCMOUSEFIRST) return 0;
370 if (first > WM_NCMOUSELAST && last < WM_KEYFIRST) return 0;
371 if (first > WM_KEYLAST && last < WM_MOUSEFIRST) return 0;
372 if (first > WM_MOUSELAST) return 0;
376 /* get the QS_* bit corresponding to a given hardware message */
377 static inline int get_hardware_msg_bit( struct message *msg )
379 if (msg->msg == WM_MOUSEMOVE || msg->msg == WM_NCMOUSEMOVE) return QS_MOUSEMOVE;
380 if (is_keyboard_msg( msg )) return QS_KEY;
381 return QS_MOUSEBUTTON;
384 /* get the current thread queue, creating it if needed */
385 static inline struct msg_queue *get_current_queue(void)
387 struct msg_queue *queue = current->queue;
388 if (!queue) queue = create_msg_queue( current, NULL );
392 /* get a (pseudo-)unique id to tag hardware messages */
393 static inline unsigned int get_unique_id(void)
395 static unsigned int id;
396 if (!++id) id = 1; /* avoid an id of 0 */
400 /* try to merge a message with the last in the list; return 1 if successful */
401 static int merge_message( struct thread_input *input, const struct message *msg )
403 struct message *prev;
404 struct list *ptr = list_tail( &input->msg_list );
407 prev = LIST_ENTRY( ptr, struct message, entry );
408 if (prev->result) return 0;
409 if (prev->win && msg->win && prev->win != msg->win) return 0;
410 if (prev->msg != msg->msg) return 0;
411 if (prev->type != msg->type) return 0;
412 /* now we can merge it */
413 prev->wparam = msg->wparam;
414 prev->lparam = msg->lparam;
415 prev->time = msg->time;
416 if (msg->type == MSG_HARDWARE && prev->data && msg->data)
418 struct hardware_msg_data *prev_data = prev->data;
419 struct hardware_msg_data *msg_data = msg->data;
420 prev_data->x = msg_data->x;
421 prev_data->y = msg_data->y;
422 prev_data->info = msg_data->info;
427 /* free a result structure */
428 static void free_result( struct message_result *result )
430 if (result->timeout) remove_timeout_user( result->timeout );
431 free( result->data );
432 if (result->callback_msg) free_message( result->callback_msg );
436 /* remove the result from the sender list it is on */
437 static inline void remove_result_from_sender( struct message_result *result )
439 assert( result->sender );
441 list_remove( &result->sender_entry );
442 result->sender = NULL;
443 if (!result->receiver) free_result( result );
446 /* store the message result in the appropriate structure */
447 static void store_message_result( struct message_result *res, lparam_t result, unsigned int error )
449 res->result = result;
454 remove_timeout_user( res->timeout );
459 if (res->callback_msg)
461 /* queue the callback message in the sender queue */
462 struct callback_msg_data *data = res->callback_msg->data;
463 data->result = result;
464 list_add_tail( &res->sender->msg_list[SEND_MESSAGE], &res->callback_msg->entry );
465 set_queue_bits( res->sender, QS_SENDMESSAGE );
466 res->callback_msg = NULL;
467 remove_result_from_sender( res );
471 /* wake sender queue if waiting on this result */
472 if (list_head(&res->sender->send_result) == &res->sender_entry)
473 set_queue_bits( res->sender, QS_SMRESULT );
479 /* free a message when deleting a queue or window */
480 static void free_message( struct message *msg )
482 struct message_result *result = msg->result;
488 result->receiver = NULL;
489 store_message_result( result, 0, STATUS_ACCESS_DENIED /*FIXME*/ );
491 else free_result( result );
497 /* remove (and free) a message from a message list */
498 static void remove_queue_message( struct msg_queue *queue, struct message *msg,
499 enum message_kind kind )
501 list_remove( &msg->entry );
505 if (list_empty( &queue->msg_list[kind] )) clear_queue_bits( queue, QS_SENDMESSAGE );
508 if (list_empty( &queue->msg_list[kind] ) && !queue->quit_message)
509 clear_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
515 /* message timed out without getting a reply */
516 static void result_timeout( void *private )
518 struct message_result *result = private;
520 assert( !result->replied );
522 result->timeout = NULL;
524 if (result->msg) /* not received yet */
526 struct message *msg = result->msg;
530 remove_queue_message( result->receiver, msg, SEND_MESSAGE );
531 result->receiver = NULL;
534 free_result( result );
539 store_message_result( result, 0, STATUS_TIMEOUT );
542 /* allocate and fill a message result structure */
543 static struct message_result *alloc_message_result( struct msg_queue *send_queue,
544 struct msg_queue *recv_queue,
545 struct message *msg, timeout_t timeout )
547 struct message_result *result = mem_alloc( sizeof(*result) );
551 result->sender = send_queue;
552 result->receiver = recv_queue;
555 result->data_size = 0;
556 result->timeout = NULL;
558 if (msg->type == MSG_CALLBACK)
560 struct message *callback_msg = mem_alloc( sizeof(*callback_msg) );
567 callback_msg->type = MSG_CALLBACK_RESULT;
568 callback_msg->win = msg->win;
569 callback_msg->msg = msg->msg;
570 callback_msg->wparam = 0;
571 callback_msg->lparam = 0;
572 callback_msg->time = get_tick_count();
573 callback_msg->result = NULL;
574 /* steal the data from the original message */
575 callback_msg->data = msg->data;
576 callback_msg->data_size = msg->data_size;
580 result->callback_msg = callback_msg;
581 list_add_head( &send_queue->callback_result, &result->sender_entry );
585 result->callback_msg = NULL;
586 list_add_head( &send_queue->send_result, &result->sender_entry );
589 if (timeout != TIMEOUT_INFINITE)
590 result->timeout = add_timeout_user( timeout, 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;
612 reply->time = msg->time;
614 if (msg->data) set_reply_data_ptr( msg->data, msg->data_size );
616 list_remove( &msg->entry );
617 /* put the result on the receiver result stack */
621 result->recv_next = queue->recv_result;
622 queue->recv_result = result;
625 if (list_empty( &queue->msg_list[SEND_MESSAGE] )) clear_queue_bits( queue, QS_SENDMESSAGE );
628 /* set the result of the current received message */
629 static void reply_message( struct msg_queue *queue, lparam_t result,
630 unsigned int error, int remove, const void *data, data_size_t len )
632 struct message_result *res = queue->recv_result;
636 queue->recv_result = res->recv_next;
637 res->receiver = NULL;
638 if (!res->sender) /* no one waiting for it */
646 if (len && (res->data = memdup( data, len ))) res->data_size = len;
647 store_message_result( res, result, error );
651 /* retrieve a posted message */
652 static int get_posted_message( struct msg_queue *queue, user_handle_t win,
653 unsigned int first, unsigned int last, unsigned int flags,
654 struct get_message_reply *reply )
658 /* check against the filters */
659 LIST_FOR_EACH_ENTRY( msg, &queue->msg_list[POST_MESSAGE], struct message, entry )
661 if (win && msg->win && msg->win != win && !is_child_window( win, msg->win )) continue;
662 if (!check_msg_filter( msg->msg, first, last )) continue;
663 goto found; /* found one */
667 /* return it to the app */
669 reply->total = msg->data_size;
670 if (msg->data_size > get_reply_max_size())
672 set_error( STATUS_BUFFER_OVERFLOW );
675 reply->type = msg->type;
676 reply->win = msg->win;
677 reply->msg = msg->msg;
678 reply->wparam = msg->wparam;
679 reply->lparam = msg->lparam;
680 reply->time = msg->time;
682 if (flags & PM_REMOVE)
686 set_reply_data_ptr( msg->data, msg->data_size );
690 remove_queue_message( queue, msg, POST_MESSAGE );
692 else if (msg->data) set_reply_data( msg->data, msg->data_size );
697 static int get_quit_message( struct msg_queue *queue, unsigned int flags,
698 struct get_message_reply *reply )
700 if (queue->quit_message)
703 reply->type = MSG_POSTED;
705 reply->msg = WM_QUIT;
706 reply->wparam = queue->exit_code;
708 reply->time = get_tick_count();
710 if (flags & PM_REMOVE)
712 queue->quit_message = 0;
713 if (list_empty( &queue->msg_list[POST_MESSAGE] ))
714 clear_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
722 /* empty a message list and free all the messages */
723 static void empty_msg_list( struct list *list )
727 while ((ptr = list_head( list )) != NULL)
729 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
730 list_remove( &msg->entry );
735 /* cleanup all pending results when deleting a queue */
736 static void cleanup_results( struct msg_queue *queue )
740 while ((entry = list_head( &queue->send_result )) != NULL)
742 remove_result_from_sender( LIST_ENTRY( entry, struct message_result, sender_entry ) );
745 while ((entry = list_head( &queue->callback_result )) != NULL)
747 remove_result_from_sender( LIST_ENTRY( entry, struct message_result, sender_entry ) );
750 while (queue->recv_result)
751 reply_message( queue, 0, STATUS_ACCESS_DENIED /*FIXME*/, 1, NULL, 0 );
754 /* check if the thread owning the queue is hung (not checking for messages) */
755 static int is_queue_hung( struct msg_queue *queue )
757 struct wait_queue_entry *entry;
759 if (current_time - queue->last_get_msg <= 5 * TICKS_PER_SEC)
760 return 0; /* less than 5 seconds since last get message -> not hung */
762 LIST_FOR_EACH_ENTRY( entry, &queue->obj.wait_queue, struct wait_queue_entry, entry )
764 if (entry->thread->queue == queue)
765 return 0; /* thread is waiting on queue -> not hung */
770 static int msg_queue_add_queue( struct object *obj, struct wait_queue_entry *entry )
772 struct msg_queue *queue = (struct msg_queue *)obj;
773 struct process *process = entry->thread->process;
775 /* a thread can only wait on its own queue */
776 if (entry->thread->queue != queue)
778 set_error( STATUS_ACCESS_DENIED );
781 /* if waiting on the main process queue, set the idle event */
782 if (process->queue == queue)
784 if (process->idle_event) set_event( process->idle_event );
786 if (queue->fd && list_empty( &obj->wait_queue )) /* first on the queue */
787 set_fd_events( queue->fd, POLLIN );
788 add_queue( obj, entry );
792 static void msg_queue_remove_queue(struct object *obj, struct wait_queue_entry *entry )
794 struct msg_queue *queue = (struct msg_queue *)obj;
795 struct process *process = entry->thread->process;
797 remove_queue( obj, entry );
798 if (queue->fd && list_empty( &obj->wait_queue )) /* last on the queue is gone */
799 set_fd_events( queue->fd, 0 );
801 assert( entry->thread->queue == queue );
803 /* if waiting on the main process queue, reset the idle event */
804 if (process->queue == queue)
806 if (process->idle_event) reset_event( process->idle_event );
810 static void msg_queue_dump( struct object *obj, int verbose )
812 struct msg_queue *queue = (struct msg_queue *)obj;
813 fprintf( stderr, "Msg queue bits=%x mask=%x\n",
814 queue->wake_bits, queue->wake_mask );
817 static int msg_queue_signaled( struct object *obj, struct thread *thread )
819 struct msg_queue *queue = (struct msg_queue *)obj;
824 if ((ret = check_fd_events( queue->fd, POLLIN )))
825 /* stop waiting on select() if we are signaled */
826 set_fd_events( queue->fd, 0 );
827 else if (!list_empty( &obj->wait_queue ))
828 /* restart waiting on poll() if we are no longer signaled */
829 set_fd_events( queue->fd, POLLIN );
831 return ret || is_signaled( queue );
834 static int msg_queue_satisfied( struct object *obj, struct thread *thread )
836 struct msg_queue *queue = (struct msg_queue *)obj;
837 queue->wake_mask = 0;
838 queue->changed_mask = 0;
839 return 0; /* Not abandoned */
842 static void msg_queue_destroy( struct object *obj )
844 struct msg_queue *queue = (struct msg_queue *)obj;
848 cleanup_results( queue );
849 for (i = 0; i < NB_MSG_KINDS; i++) empty_msg_list( &queue->msg_list[i] );
851 while ((ptr = list_head( &queue->pending_timers )))
853 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
854 list_remove( &timer->entry );
857 while ((ptr = list_head( &queue->expired_timers )))
859 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
860 list_remove( &timer->entry );
863 if (queue->timeout) remove_timeout_user( queue->timeout );
864 if (queue->input) release_object( queue->input );
865 if (queue->hooks) release_object( queue->hooks );
866 if (queue->fd) release_object( queue->fd );
869 static void msg_queue_poll_event( struct fd *fd, int event )
871 struct msg_queue *queue = get_fd_user( fd );
872 assert( queue->obj.ops == &msg_queue_ops );
874 if (event & (POLLERR | POLLHUP)) set_fd_events( fd, -1 );
875 else set_fd_events( queue->fd, 0 );
876 wake_up( &queue->obj, 0 );
879 static void thread_input_dump( struct object *obj, int verbose )
881 struct thread_input *input = (struct thread_input *)obj;
882 fprintf( stderr, "Thread input focus=%08x capture=%08x active=%08x\n",
883 input->focus, input->capture, input->active );
886 static void thread_input_destroy( struct object *obj )
888 struct thread_input *input = (struct thread_input *)obj;
890 if (foreground_input == input) foreground_input = NULL;
891 empty_msg_list( &input->msg_list );
892 if (input->desktop) release_object( input->desktop );
895 /* fix the thread input data when a window is destroyed */
896 static inline void thread_input_cleanup_window( struct msg_queue *queue, user_handle_t window )
898 struct thread_input *input = queue->input;
900 if (window == input->focus) input->focus = 0;
901 if (window == input->capture) input->capture = 0;
902 if (window == input->active) input->active = 0;
903 if (window == input->menu_owner) input->menu_owner = 0;
904 if (window == input->move_size) input->move_size = 0;
905 if (window == input->caret) set_caret_window( input, 0 );
908 /* check if the specified window can be set in the input data of a given queue */
909 static int check_queue_input_window( struct msg_queue *queue, user_handle_t window )
911 struct thread *thread;
914 if (!window) return 1; /* we can always clear the data */
916 if ((thread = get_window_thread( window )))
918 ret = (queue->input == thread->queue->input);
919 if (!ret) set_error( STATUS_ACCESS_DENIED );
920 release_object( thread );
922 else set_error( STATUS_INVALID_HANDLE );
927 /* make sure the specified thread has a queue */
928 int init_thread_queue( struct thread *thread )
930 if (thread->queue) return 1;
931 return (create_msg_queue( thread, NULL ) != NULL);
934 /* attach two thread input data structures */
935 int attach_thread_input( struct thread *thread_from, struct thread *thread_to )
937 struct desktop *desktop;
938 struct thread_input *input;
940 if (!thread_to->queue && !(thread_to->queue = create_msg_queue( thread_to, NULL ))) return 0;
941 if (!(desktop = get_thread_desktop( thread_from, 0 ))) return 0;
942 input = (struct thread_input *)grab_object( thread_to->queue->input );
943 if (input->desktop != desktop)
945 set_error( STATUS_ACCESS_DENIED );
946 release_object( input );
947 release_object( desktop );
950 release_object( desktop );
952 if (thread_from->queue)
954 release_thread_input( thread_from );
955 thread_from->queue->input = input;
959 if (!(thread_from->queue = create_msg_queue( thread_from, input ))) return 0;
961 memset( input->keystate, 0, sizeof(input->keystate) );
965 /* detach two thread input data structures */
966 void detach_thread_input( struct thread *thread_from )
968 struct thread_input *input;
970 if ((input = create_thread_input( thread_from )))
972 release_thread_input( thread_from );
973 thread_from->queue->input = input;
978 /* set the next timer to expire */
979 static void set_next_timer( struct msg_queue *queue )
985 remove_timeout_user( queue->timeout );
986 queue->timeout = NULL;
988 if ((ptr = list_head( &queue->pending_timers )))
990 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
991 queue->timeout = add_timeout_user( timer->when, timer_callback, queue );
993 /* set/clear QS_TIMER bit */
994 if (list_empty( &queue->expired_timers ))
995 clear_queue_bits( queue, QS_TIMER );
997 set_queue_bits( queue, QS_TIMER );
1000 /* find a timer from its window and id */
1001 static struct timer *find_timer( struct msg_queue *queue, user_handle_t win,
1002 unsigned int msg, lparam_t id )
1006 /* we need to search both lists */
1008 LIST_FOR_EACH( ptr, &queue->pending_timers )
1010 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1011 if (timer->win == win && timer->msg == msg && timer->id == id) return timer;
1013 LIST_FOR_EACH( ptr, &queue->expired_timers )
1015 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1016 if (timer->win == win && timer->msg == msg && timer->id == id) return timer;
1021 /* callback for the next timer expiration */
1022 static void timer_callback( void *private )
1024 struct msg_queue *queue = private;
1027 queue->timeout = NULL;
1028 /* move on to the next timer */
1029 ptr = list_head( &queue->pending_timers );
1031 list_add_tail( &queue->expired_timers, ptr );
1032 set_next_timer( queue );
1035 /* link a timer at its rightful place in the queue list */
1036 static void link_timer( struct msg_queue *queue, struct timer *timer )
1040 for (ptr = queue->pending_timers.next; ptr != &queue->pending_timers; ptr = ptr->next)
1042 struct timer *t = LIST_ENTRY( ptr, struct timer, entry );
1043 if (t->when >= timer->when) break;
1045 list_add_before( ptr, &timer->entry );
1048 /* remove a timer from the queue timer list and free it */
1049 static void free_timer( struct msg_queue *queue, struct timer *timer )
1051 list_remove( &timer->entry );
1053 set_next_timer( queue );
1056 /* restart an expired timer */
1057 static void restart_timer( struct msg_queue *queue, struct timer *timer )
1059 list_remove( &timer->entry );
1060 while (timer->when <= current_time) timer->when += (timeout_t)timer->rate * 10000;
1061 link_timer( queue, timer );
1062 set_next_timer( queue );
1065 /* find an expired timer matching the filtering parameters */
1066 static struct timer *find_expired_timer( struct msg_queue *queue, user_handle_t win,
1067 unsigned int get_first, unsigned int get_last,
1072 LIST_FOR_EACH( ptr, &queue->expired_timers )
1074 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1075 if (win && timer->win != win) continue;
1076 if (check_msg_filter( timer->msg, get_first, get_last ))
1078 if (remove) restart_timer( queue, timer );
1086 static struct timer *set_timer( struct msg_queue *queue, unsigned int rate )
1088 struct timer *timer = mem_alloc( sizeof(*timer) );
1091 timer->rate = max( rate, 1 );
1092 timer->when = current_time + (timeout_t)timer->rate * 10000;
1093 link_timer( queue, timer );
1094 /* check if we replaced the next timer */
1095 if (list_head( &queue->pending_timers ) == &timer->entry) set_next_timer( queue );
1100 /* change the input key state for a given key */
1101 static void set_input_key_state( struct thread_input *input, unsigned char key, int down )
1105 if (!(input->keystate[key] & 0x80)) input->keystate[key] ^= 0x01;
1106 input->keystate[key] |= 0x80;
1108 else input->keystate[key] &= ~0x80;
1111 /* update the input key state for a keyboard message */
1112 static void update_input_key_state( struct thread_input *input, const struct message *msg )
1119 case WM_LBUTTONDOWN:
1123 set_input_key_state( input, VK_LBUTTON, down );
1125 case WM_MBUTTONDOWN:
1129 set_input_key_state( input, VK_MBUTTON, down );
1131 case WM_RBUTTONDOWN:
1135 set_input_key_state( input, VK_RBUTTON, down );
1137 case WM_XBUTTONDOWN:
1141 if (msg->wparam == XBUTTON1) set_input_key_state( input, VK_XBUTTON1, down );
1142 else if (msg->wparam == XBUTTON2) set_input_key_state( input, VK_XBUTTON2, down );
1150 key = (unsigned char)msg->wparam;
1151 set_input_key_state( input, key, down );
1156 down = (input->keystate[VK_LCONTROL] | input->keystate[VK_RCONTROL]) & 0x80;
1157 set_input_key_state( input, VK_CONTROL, down );
1161 down = (input->keystate[VK_LMENU] | input->keystate[VK_RMENU]) & 0x80;
1162 set_input_key_state( input, VK_MENU, down );
1166 down = (input->keystate[VK_LSHIFT] | input->keystate[VK_RSHIFT]) & 0x80;
1167 set_input_key_state( input, VK_SHIFT, down );
1174 /* release the hardware message currently being processed by the given thread */
1175 static void release_hardware_message( struct msg_queue *queue, unsigned int hw_id,
1176 int remove, user_handle_t new_win )
1178 struct thread_input *input = queue->input;
1179 struct message *msg;
1181 LIST_FOR_EACH_ENTRY( msg, &input->msg_list, struct message, entry )
1183 if (msg->unique_id == hw_id) break;
1185 if (&msg->entry == &input->msg_list) return; /* not found */
1187 /* clear the queue bit for that message */
1188 if (remove || new_win)
1190 struct message *other;
1193 clr_bit = get_hardware_msg_bit( msg );
1194 LIST_FOR_EACH_ENTRY( other, &input->msg_list, struct message, entry )
1196 if (other != msg && get_hardware_msg_bit( other ) == clr_bit)
1202 if (clr_bit) clear_queue_bits( queue, clr_bit );
1205 if (new_win) /* set the new window */
1207 struct thread *owner = get_window_thread( new_win );
1211 if (owner->queue->input != input)
1213 list_remove( &msg->entry );
1214 if (msg->msg == WM_MOUSEMOVE && merge_message( owner->queue->input, msg ))
1216 free_message( msg );
1217 release_object( owner );
1220 list_add_tail( &owner->queue->input->msg_list, &msg->entry );
1222 set_queue_bits( owner->queue, get_hardware_msg_bit( msg ));
1224 release_object( owner );
1229 update_input_key_state( input, msg );
1230 list_remove( &msg->entry );
1231 free_message( msg );
1235 /* find the window that should receive a given hardware message */
1236 static user_handle_t find_hardware_message_window( struct thread_input *input, struct message *msg,
1237 struct hardware_msg_data *data, unsigned int *msg_code )
1239 user_handle_t win = 0;
1241 *msg_code = msg->msg;
1242 if (is_keyboard_msg( msg ))
1244 if (input && !(win = input->focus))
1246 win = input->active;
1247 if (*msg_code < WM_SYSKEYDOWN) *msg_code += WM_SYSKEYDOWN - WM_KEYDOWN;
1250 else /* mouse message */
1252 if (!input || !(win = input->capture))
1254 if (!(win = msg->win) || !is_window_visible( win ))
1256 if (input) win = window_from_point( input->desktop, data->x, data->y );
1263 /* queue a hardware message into a given thread input */
1264 static void queue_hardware_message( struct msg_queue *queue, struct message *msg,
1265 struct hardware_msg_data *data )
1268 struct thread *thread;
1269 struct thread_input *input = queue ? queue->input : foreground_input;
1270 unsigned int msg_code;
1272 last_input_time = get_tick_count();
1273 win = find_hardware_message_window( input, msg, data, &msg_code );
1274 if (!win || !(thread = get_window_thread(win)))
1276 if (input) update_input_key_state( input, msg );
1280 input = thread->queue->input;
1282 if (msg->msg == WM_MOUSEMOVE && merge_message( input, msg )) free( msg );
1285 msg->unique_id = 0; /* will be set once we return it to the app */
1286 list_add_tail( &input->msg_list, &msg->entry );
1287 set_queue_bits( thread->queue, get_hardware_msg_bit(msg) );
1289 release_object( thread );
1292 /* check message filter for a hardware message */
1293 static int check_hw_message_filter( user_handle_t win, unsigned int msg_code,
1294 user_handle_t filter_win, unsigned int first, unsigned int last )
1296 if (msg_code >= WM_KEYFIRST && msg_code <= WM_KEYLAST)
1298 /* we can only test the window for a keyboard message since the
1299 * dest window for a mouse message depends on hittest */
1300 if (filter_win && win != filter_win && !is_child_window( filter_win, win ))
1302 /* the message code is final for a keyboard message, we can simply check it */
1303 return check_msg_filter( msg_code, first, last );
1305 else /* mouse message */
1307 /* we need to check all possible values that the message can have in the end */
1309 if (check_msg_filter( msg_code, first, last )) return 1;
1310 if (msg_code == WM_MOUSEWHEEL) return 0; /* no other possible value for this one */
1312 /* all other messages can become non-client messages */
1313 if (check_msg_filter( msg_code + (WM_NCMOUSEFIRST - WM_MOUSEFIRST), first, last )) return 1;
1315 /* clicks can become double-clicks or non-client double-clicks */
1316 if (msg_code == WM_LBUTTONDOWN || msg_code == WM_MBUTTONDOWN ||
1317 msg_code == WM_RBUTTONDOWN || msg_code == WM_XBUTTONDOWN)
1319 if (check_msg_filter( msg_code + (WM_LBUTTONDBLCLK - WM_LBUTTONDOWN), first, last )) return 1;
1320 if (check_msg_filter( msg_code + (WM_NCLBUTTONDBLCLK - WM_LBUTTONDOWN), first, last )) return 1;
1327 /* find a hardware message for the given queue */
1328 static int get_hardware_message( struct thread *thread, unsigned int hw_id, user_handle_t filter_win,
1329 unsigned int first, unsigned int last, struct get_message_reply *reply )
1331 struct thread_input *input = thread->queue->input;
1332 struct thread *win_thread;
1335 int clear_bits, got_one = 0;
1336 unsigned int msg_code;
1338 ptr = list_head( &input->msg_list );
1343 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1344 if (msg->unique_id == hw_id) break;
1345 ptr = list_next( &input->msg_list, ptr );
1347 if (!ptr) ptr = list_head( &input->msg_list );
1348 else ptr = list_next( &input->msg_list, ptr ); /* start from the next one */
1351 if (ptr == list_head( &input->msg_list ))
1352 clear_bits = QS_KEY | QS_MOUSEMOVE | QS_MOUSEBUTTON;
1354 clear_bits = 0; /* don't clear bits if we don't go through the whole list */
1358 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1359 struct hardware_msg_data *data = msg->data;
1361 ptr = list_next( &input->msg_list, ptr );
1362 win = find_hardware_message_window( input, msg, data, &msg_code );
1363 if (!win || !(win_thread = get_window_thread( win )))
1365 /* no window at all, remove it */
1366 update_input_key_state( input, msg );
1367 list_remove( &msg->entry );
1368 free_message( msg );
1371 if (win_thread != thread)
1373 if (win_thread->queue->input == input)
1375 /* wake the other thread */
1376 set_queue_bits( win_thread->queue, get_hardware_msg_bit(msg) );
1381 /* for another thread input, drop it */
1382 update_input_key_state( input, msg );
1383 list_remove( &msg->entry );
1384 free_message( msg );
1386 release_object( win_thread );
1389 release_object( win_thread );
1391 /* if we already got a message for another thread, or if it doesn't
1392 * match the filter we skip it */
1393 if (got_one || !check_hw_message_filter( win, msg_code, filter_win, first, last ))
1395 clear_bits &= ~get_hardware_msg_bit( msg );
1398 /* now we can return it */
1399 if (!msg->unique_id) msg->unique_id = get_unique_id();
1400 reply->type = MSG_HARDWARE;
1402 reply->msg = msg_code;
1403 reply->wparam = msg->wparam;
1404 reply->lparam = msg->lparam;
1405 reply->time = msg->time;
1407 data->hw_id = msg->unique_id;
1408 set_reply_data( msg->data, msg->data_size );
1411 /* nothing found, clear the hardware queue bits */
1412 clear_queue_bits( thread->queue, clear_bits );
1416 /* increment (or decrement if 'incr' is negative) the queue paint count */
1417 void inc_queue_paint_count( struct thread *thread, int incr )
1419 struct msg_queue *queue = thread->queue;
1423 if ((queue->paint_count += incr) < 0) queue->paint_count = 0;
1425 if (queue->paint_count)
1426 set_queue_bits( queue, QS_PAINT );
1428 clear_queue_bits( queue, QS_PAINT );
1432 /* remove all messages and timers belonging to a certain window */
1433 void queue_cleanup_window( struct thread *thread, user_handle_t win )
1435 struct msg_queue *queue = thread->queue;
1443 ptr = list_head( &queue->pending_timers );
1446 struct list *next = list_next( &queue->pending_timers, ptr );
1447 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1448 if (timer->win == win) free_timer( queue, timer );
1451 ptr = list_head( &queue->expired_timers );
1454 struct list *next = list_next( &queue->expired_timers, ptr );
1455 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1456 if (timer->win == win) free_timer( queue, timer );
1460 /* remove messages */
1461 for (i = 0; i < NB_MSG_KINDS; i++)
1463 struct list *ptr, *next;
1465 LIST_FOR_EACH_SAFE( ptr, next, &queue->msg_list[i] )
1467 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1468 if (msg->win == win) remove_queue_message( queue, msg, i );
1472 thread_input_cleanup_window( queue, win );
1475 /* post a message to a window; used by socket handling */
1476 void post_message( user_handle_t win, unsigned int message, lparam_t wparam, lparam_t lparam )
1478 struct message *msg;
1479 struct thread *thread = get_window_thread( win );
1481 if (!thread) return;
1483 if (thread->queue && (msg = mem_alloc( sizeof(*msg) )))
1485 msg->type = MSG_POSTED;
1486 msg->win = get_user_full_handle( win );
1488 msg->wparam = wparam;
1489 msg->lparam = lparam;
1490 msg->time = get_tick_count();
1495 list_add_tail( &thread->queue->msg_list[POST_MESSAGE], &msg->entry );
1496 set_queue_bits( thread->queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
1498 release_object( thread );
1501 /* post a win event */
1502 void post_win_event( struct thread *thread, unsigned int event,
1503 user_handle_t win, unsigned int object_id,
1504 unsigned int child_id, client_ptr_t hook_proc,
1505 const WCHAR *module, data_size_t module_size,
1508 struct message *msg;
1510 if (thread->queue && (msg = mem_alloc( sizeof(*msg) )))
1512 struct winevent_msg_data *data;
1514 msg->type = MSG_WINEVENT;
1515 msg->win = get_user_full_handle( win );
1517 msg->wparam = object_id;
1518 msg->lparam = child_id;
1519 msg->time = get_tick_count();
1522 if ((data = malloc( sizeof(*data) + module_size )))
1525 data->tid = get_thread_id( current );
1526 data->hook_proc = hook_proc;
1527 memcpy( data + 1, module, module_size );
1530 msg->data_size = sizeof(*data) + module_size;
1532 if (debug_level > 1)
1533 fprintf( stderr, "post_win_event: tid %04x event %04x win %08x object_id %d child_id %d\n",
1534 get_thread_id(thread), event, win, object_id, child_id );
1535 list_add_tail( &thread->queue->msg_list[SEND_MESSAGE], &msg->entry );
1536 set_queue_bits( thread->queue, QS_SENDMESSAGE );
1544 /* check if the thread owning the window is hung */
1545 DECL_HANDLER(is_window_hung)
1547 struct thread *thread;
1549 thread = get_window_thread( req->win );
1552 reply->is_hung = is_queue_hung( thread->queue );
1553 release_object( thread );
1555 else reply->is_hung = 0;
1559 /* get the message queue of the current thread */
1560 DECL_HANDLER(get_msg_queue)
1562 struct msg_queue *queue = get_current_queue();
1565 if (queue) reply->handle = alloc_handle( current->process, queue, SYNCHRONIZE, 0 );
1569 /* set the file descriptor associated to the current thread queue */
1570 DECL_HANDLER(set_queue_fd)
1572 struct msg_queue *queue = get_current_queue();
1576 if (queue->fd) /* fd can only be set once */
1578 set_error( STATUS_ACCESS_DENIED );
1581 if (!(file = get_file_obj( current->process, req->handle, SYNCHRONIZE ))) return;
1583 if ((unix_fd = get_file_unix_fd( file )) != -1)
1585 if ((unix_fd = dup( unix_fd )) != -1)
1586 queue->fd = create_anonymous_fd( &msg_queue_fd_ops, unix_fd, &queue->obj, 0 );
1590 release_object( file );
1594 /* set the current message queue wakeup mask */
1595 DECL_HANDLER(set_queue_mask)
1597 struct msg_queue *queue = get_current_queue();
1601 queue->wake_mask = req->wake_mask;
1602 queue->changed_mask = req->changed_mask;
1603 reply->wake_bits = queue->wake_bits;
1604 reply->changed_bits = queue->changed_bits;
1605 if (is_signaled( queue ))
1607 /* if skip wait is set, do what would have been done in the subsequent wait */
1608 if (req->skip_wait) msg_queue_satisfied( &queue->obj, current );
1609 else wake_up( &queue->obj, 0 );
1615 /* get the current message queue status */
1616 DECL_HANDLER(get_queue_status)
1618 struct msg_queue *queue = current->queue;
1621 reply->wake_bits = queue->wake_bits;
1622 reply->changed_bits = queue->changed_bits;
1623 if (req->clear) queue->changed_bits = 0;
1625 else reply->wake_bits = reply->changed_bits = 0;
1629 /* send a message to a thread queue */
1630 DECL_HANDLER(send_message)
1632 struct message *msg;
1633 struct msg_queue *send_queue = get_current_queue();
1634 struct msg_queue *recv_queue = NULL;
1635 struct thread *thread = NULL;
1637 if (!(thread = get_thread_from_id( req->id ))) return;
1639 if (!(recv_queue = thread->queue))
1641 set_error( STATUS_INVALID_PARAMETER );
1642 release_object( thread );
1645 if ((req->flags & SEND_MSG_ABORT_IF_HUNG) && is_queue_hung(recv_queue))
1647 set_error( STATUS_TIMEOUT );
1648 release_object( thread );
1652 if ((msg = mem_alloc( sizeof(*msg) )))
1654 msg->type = req->type;
1655 msg->win = get_user_full_handle( req->win );
1656 msg->msg = req->msg;
1657 msg->wparam = req->wparam;
1658 msg->lparam = req->lparam;
1659 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;
1708 struct hardware_msg_data *data;
1712 if (!(thread = get_thread_from_id( req->id ))) return;
1715 if (thread && !(recv_queue = thread->queue))
1717 set_error( STATUS_INVALID_PARAMETER );
1718 release_object( thread );
1722 if (!(data = mem_alloc( sizeof(*data) )))
1724 if (thread) release_object( thread );
1727 memset( data, 0, sizeof(*data) );
1730 data->info = req->info;
1732 if ((msg = mem_alloc( sizeof(*msg) )))
1734 msg->type = MSG_HARDWARE;
1735 msg->win = get_user_full_handle( req->win );
1736 msg->msg = req->msg;
1737 msg->wparam = req->wparam;
1738 msg->lparam = req->lparam;
1739 msg->time = req->time;
1742 msg->data_size = sizeof(*data);
1743 queue_hardware_message( recv_queue, msg, data );
1747 if (thread) release_object( thread );
1750 /* post a quit message to the current queue */
1751 DECL_HANDLER(post_quit_message)
1753 struct msg_queue *queue = get_current_queue();
1758 queue->quit_message = 1;
1759 queue->exit_code = req->exit_code;
1760 set_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
1763 /* get a message from the current queue */
1764 DECL_HANDLER(get_message)
1766 struct timer *timer;
1768 struct msg_queue *queue = get_current_queue();
1769 user_handle_t get_win = get_user_full_handle( req->get_win );
1770 unsigned int filter = req->flags >> 16;
1772 reply->active_hooks = get_active_hooks();
1775 queue->last_get_msg = current_time;
1776 if (!filter) filter = QS_ALLINPUT;
1778 /* first check for sent messages */
1779 if ((ptr = list_head( &queue->msg_list[SEND_MESSAGE] )))
1781 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1782 receive_message( queue, msg, reply );
1786 /* clear changed bits so we can wait on them if we don't find a message */
1787 if (filter & QS_POSTMESSAGE)
1789 queue->changed_bits &= ~(QS_POSTMESSAGE | QS_HOTKEY | QS_TIMER);
1790 if (req->get_first == 0 && req->get_last == ~0U) queue->changed_bits &= ~QS_ALLPOSTMESSAGE;
1792 if (filter & QS_INPUT) queue->changed_bits &= ~QS_INPUT;
1793 if (filter & QS_PAINT) queue->changed_bits &= ~QS_PAINT;
1795 /* then check for posted messages */
1796 if ((filter & QS_POSTMESSAGE) &&
1797 get_posted_message( queue, get_win, req->get_first, req->get_last, req->flags, reply ))
1800 /* only check for quit messages if not posted messages pending.
1801 * note: the quit message isn't filtered */
1802 if (get_quit_message( queue, req->flags, reply ))
1805 /* then check for any raw hardware message */
1806 if ((filter & QS_INPUT) &&
1807 filter_contains_hw_range( req->get_first, req->get_last ) &&
1808 get_hardware_message( current, req->hw_id, get_win, req->get_first, req->get_last, reply ))
1811 /* now check for WM_PAINT */
1812 if ((filter & QS_PAINT) &&
1813 queue->paint_count &&
1814 check_msg_filter( WM_PAINT, req->get_first, req->get_last ) &&
1815 (reply->win = find_window_to_repaint( get_win, current )))
1817 reply->type = MSG_POSTED;
1818 reply->msg = WM_PAINT;
1821 reply->time = get_tick_count();
1825 /* now check for timer */
1826 if ((filter & QS_TIMER) &&
1827 (timer = find_expired_timer( queue, get_win, req->get_first,
1828 req->get_last, (req->flags & PM_REMOVE) )))
1830 reply->type = MSG_POSTED;
1831 reply->win = timer->win;
1832 reply->msg = timer->msg;
1833 reply->wparam = timer->id;
1834 reply->lparam = timer->lparam;
1835 reply->time = get_tick_count();
1839 queue->wake_mask = req->wake_mask;
1840 queue->changed_mask = req->changed_mask;
1841 set_error( STATUS_PENDING ); /* FIXME */
1845 /* reply to a sent message */
1846 DECL_HANDLER(reply_message)
1848 if (!current->queue) set_error( STATUS_ACCESS_DENIED );
1849 else if (current->queue->recv_result)
1850 reply_message( current->queue, req->result, 0, req->remove,
1851 get_req_data(), get_req_data_size() );
1855 /* accept the current hardware message */
1856 DECL_HANDLER(accept_hardware_message)
1859 release_hardware_message( current->queue, req->hw_id, req->remove, req->new_win );
1861 set_error( STATUS_ACCESS_DENIED );
1865 /* retrieve the reply for the last message sent */
1866 DECL_HANDLER(get_message_reply)
1868 struct message_result *result;
1870 struct msg_queue *queue = current->queue;
1874 set_error( STATUS_PENDING );
1877 if (!(entry = list_head( &queue->send_result ))) return; /* no reply ready */
1879 result = LIST_ENTRY( entry, struct message_result, sender_entry );
1880 if (result->replied || req->cancel)
1882 if (result->replied)
1884 reply->result = result->result;
1885 set_error( result->error );
1888 data_size_t data_len = min( result->data_size, get_reply_max_size() );
1889 set_reply_data_ptr( result->data, data_len );
1890 result->data = NULL;
1891 result->data_size = 0;
1894 remove_result_from_sender( result );
1896 entry = list_head( &queue->send_result );
1897 if (!entry) clear_queue_bits( queue, QS_SMRESULT );
1900 result = LIST_ENTRY( entry, struct message_result, sender_entry );
1901 if (!result->replied) clear_queue_bits( queue, QS_SMRESULT );
1905 else set_error( STATUS_ACCESS_DENIED );
1909 /* set a window timer */
1910 DECL_HANDLER(set_win_timer)
1912 struct timer *timer;
1913 struct msg_queue *queue;
1914 struct thread *thread = NULL;
1915 user_handle_t win = 0;
1916 lparam_t id = req->id;
1920 if (!(win = get_user_full_handle( req->win )) || !(thread = get_window_thread( win )))
1922 set_error( STATUS_INVALID_HANDLE );
1925 if (thread->process != current->process)
1927 release_object( thread );
1928 set_error( STATUS_ACCESS_DENIED );
1931 queue = thread->queue;
1932 /* remove it if it existed already */
1933 if ((timer = find_timer( queue, win, req->msg, id ))) free_timer( queue, timer );
1937 queue = get_current_queue();
1938 /* look for a timer with this id */
1939 if (id && (timer = find_timer( queue, 0, req->msg, id )))
1941 /* free and reuse id */
1942 free_timer( queue, timer );
1946 /* find a free id for it */
1949 id = queue->next_timer_id;
1950 if (--queue->next_timer_id <= 0x100) queue->next_timer_id = 0x7fff;
1952 while (find_timer( queue, 0, req->msg, id ));
1956 if ((timer = set_timer( queue, req->rate )))
1959 timer->msg = req->msg;
1961 timer->lparam = req->lparam;
1964 if (thread) release_object( thread );
1967 /* kill a window timer */
1968 DECL_HANDLER(kill_win_timer)
1970 struct timer *timer;
1971 struct thread *thread;
1972 user_handle_t win = 0;
1976 if (!(win = get_user_full_handle( req->win )) || !(thread = get_window_thread( win )))
1978 set_error( STATUS_INVALID_HANDLE );
1981 if (thread->process != current->process)
1983 release_object( thread );
1984 set_error( STATUS_ACCESS_DENIED );
1988 else thread = (struct thread *)grab_object( current );
1990 if (thread->queue && (timer = find_timer( thread->queue, win, req->msg, req->id )))
1991 free_timer( thread->queue, timer );
1993 set_error( STATUS_INVALID_PARAMETER );
1995 release_object( thread );
1999 /* attach (or detach) thread inputs */
2000 DECL_HANDLER(attach_thread_input)
2002 struct thread *thread_from = get_thread_from_id( req->tid_from );
2003 struct thread *thread_to = get_thread_from_id( req->tid_to );
2005 if (!thread_from || !thread_to)
2007 if (thread_from) release_object( thread_from );
2008 if (thread_to) release_object( thread_to );
2011 if (thread_from != thread_to)
2013 if (req->attach) attach_thread_input( thread_from, thread_to );
2016 if (thread_from->queue && thread_to->queue &&
2017 thread_from->queue->input == thread_to->queue->input)
2018 detach_thread_input( thread_from );
2020 set_error( STATUS_ACCESS_DENIED );
2023 else set_error( STATUS_ACCESS_DENIED );
2024 release_object( thread_from );
2025 release_object( thread_to );
2029 /* get thread input data */
2030 DECL_HANDLER(get_thread_input)
2032 struct thread *thread = NULL;
2033 struct thread_input *input;
2037 if (!(thread = get_thread_from_id( req->tid ))) return;
2038 input = thread->queue ? thread->queue->input : NULL;
2040 else input = foreground_input; /* get the foreground thread info */
2044 reply->focus = input->focus;
2045 reply->capture = input->capture;
2046 reply->active = input->active;
2047 reply->menu_owner = input->menu_owner;
2048 reply->move_size = input->move_size;
2049 reply->caret = input->caret;
2050 reply->rect = input->caret_rect;
2057 reply->menu_owner = 0;
2058 reply->move_size = 0;
2060 reply->rect.left = reply->rect.top = reply->rect.right = reply->rect.bottom = 0;
2062 /* foreground window is active window of foreground thread */
2063 reply->foreground = foreground_input ? foreground_input->active : 0;
2064 if (thread) release_object( thread );
2068 /* retrieve queue keyboard state for a given thread */
2069 DECL_HANDLER(get_key_state)
2071 struct thread *thread;
2072 struct thread_input *input;
2074 if (!(thread = get_thread_from_id( req->tid ))) return;
2075 input = thread->queue ? thread->queue->input : NULL;
2078 if (req->key >= 0) reply->state = input->keystate[req->key & 0xff];
2079 set_reply_data( input->keystate, min( get_reply_max_size(), sizeof(input->keystate) ));
2081 release_object( thread );
2085 /* set queue keyboard state for a given thread */
2086 DECL_HANDLER(set_key_state)
2088 struct thread *thread = NULL;
2089 struct thread_input *input;
2091 if (!(thread = get_thread_from_id( req->tid ))) return;
2092 input = thread->queue ? thread->queue->input : NULL;
2095 data_size_t size = min( sizeof(input->keystate), get_req_data_size() );
2096 if (size) memcpy( input->keystate, get_req_data(), size );
2098 release_object( thread );
2102 /* set the system foreground window */
2103 DECL_HANDLER(set_foreground_window)
2105 struct thread *thread;
2106 struct msg_queue *queue = get_current_queue();
2108 reply->previous = foreground_input ? foreground_input->active : 0;
2109 reply->send_msg_old = (reply->previous && foreground_input != queue->input);
2110 reply->send_msg_new = FALSE;
2112 if (is_top_level_window( req->handle ) &&
2113 ((thread = get_window_thread( req->handle ))))
2115 foreground_input = thread->queue->input;
2116 reply->send_msg_new = (foreground_input != queue->input);
2117 release_object( thread );
2119 else set_win32_error( ERROR_INVALID_WINDOW_HANDLE );
2123 /* set the current thread focus window */
2124 DECL_HANDLER(set_focus_window)
2126 struct msg_queue *queue = get_current_queue();
2128 reply->previous = 0;
2129 if (queue && check_queue_input_window( queue, req->handle ))
2131 reply->previous = queue->input->focus;
2132 queue->input->focus = get_user_full_handle( req->handle );
2137 /* set the current thread active window */
2138 DECL_HANDLER(set_active_window)
2140 struct msg_queue *queue = get_current_queue();
2142 reply->previous = 0;
2143 if (queue && check_queue_input_window( queue, req->handle ))
2145 if (!req->handle || make_window_active( req->handle ))
2147 reply->previous = queue->input->active;
2148 queue->input->active = get_user_full_handle( req->handle );
2150 else set_error( STATUS_INVALID_HANDLE );
2155 /* set the current thread capture window */
2156 DECL_HANDLER(set_capture_window)
2158 struct msg_queue *queue = get_current_queue();
2160 reply->previous = reply->full_handle = 0;
2161 if (queue && check_queue_input_window( queue, req->handle ))
2163 struct thread_input *input = queue->input;
2165 reply->previous = input->capture;
2166 input->capture = get_user_full_handle( req->handle );
2167 input->menu_owner = (req->flags & CAPTURE_MENU) ? input->capture : 0;
2168 input->move_size = (req->flags & CAPTURE_MOVESIZE) ? input->capture : 0;
2169 reply->full_handle = input->capture;
2174 /* Set the current thread caret window */
2175 DECL_HANDLER(set_caret_window)
2177 struct msg_queue *queue = get_current_queue();
2179 reply->previous = 0;
2180 if (queue && check_queue_input_window( queue, req->handle ))
2182 struct thread_input *input = queue->input;
2184 reply->previous = input->caret;
2185 reply->old_rect = input->caret_rect;
2186 reply->old_hide = input->caret_hide;
2187 reply->old_state = input->caret_state;
2189 set_caret_window( input, get_user_full_handle(req->handle) );
2190 input->caret_rect.right = input->caret_rect.left + req->width;
2191 input->caret_rect.bottom = input->caret_rect.top + req->height;
2196 /* Set the current thread caret information */
2197 DECL_HANDLER(set_caret_info)
2199 struct msg_queue *queue = get_current_queue();
2200 struct thread_input *input;
2203 input = queue->input;
2204 reply->full_handle = input->caret;
2205 reply->old_rect = input->caret_rect;
2206 reply->old_hide = input->caret_hide;
2207 reply->old_state = input->caret_state;
2209 if (req->handle && get_user_full_handle(req->handle) != input->caret)
2211 set_error( STATUS_ACCESS_DENIED );
2214 if (req->flags & SET_CARET_POS)
2216 input->caret_rect.right += req->x - input->caret_rect.left;
2217 input->caret_rect.bottom += req->y - input->caret_rect.top;
2218 input->caret_rect.left = req->x;
2219 input->caret_rect.top = req->y;
2221 if (req->flags & SET_CARET_HIDE)
2223 input->caret_hide += req->hide;
2224 if (input->caret_hide < 0) input->caret_hide = 0;
2226 if (req->flags & SET_CARET_STATE)
2228 if (req->state == -1) input->caret_state = !input->caret_state;
2229 else input->caret_state = !!req->state;
2234 /* get the time of the last input event */
2235 DECL_HANDLER(get_last_input_time)
2237 reply->time = last_input_time;