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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 #include "wine/port.h"
41 enum message_kind
{ SEND_MESSAGE
, POST_MESSAGE
};
42 #define NB_MSG_KINDS (POST_MESSAGE+1)
47 struct list sender_entry
; /* entry in sender list */
48 struct message_result
*recv_next
; /* next in receiver list */
49 struct msg_queue
*sender
; /* sender queue */
50 struct msg_queue
*receiver
; /* receiver queue */
51 int replied
; /* has it been replied to? */
52 unsigned int result
; /* reply result */
53 unsigned int error
; /* error code to pass back to sender */
54 struct message
*callback_msg
; /* message to queue for callback */
55 void *data
; /* message reply data */
56 unsigned int data_size
; /* size of message reply data */
57 struct timeout_user
*timeout
; /* result timeout */
62 struct list entry
; /* entry in message list */
63 enum message_type type
; /* message type */
64 user_handle_t win
; /* window handle */
65 unsigned int msg
; /* message code */
66 unsigned int wparam
; /* parameters */
67 unsigned int lparam
; /* parameters */
68 int x
; /* x position */
69 int y
; /* y position */
70 unsigned int time
; /* message time */
71 unsigned int info
; /* extra info */
72 user_handle_t hook
; /* winevent hook handle */
73 void *hook_proc
; /* winevent hook proc address */
74 void *data
; /* message data for sent messages */
75 unsigned int data_size
; /* size of message data */
76 struct message_result
*result
; /* result in sender queue */
81 struct list entry
; /* entry in timer list */
82 struct timeval when
; /* next expiration */
83 unsigned int rate
; /* timer rate in ms */
84 user_handle_t win
; /* window handle */
85 unsigned int msg
; /* message to post */
86 unsigned int id
; /* timer id */
87 unsigned int lparam
; /* lparam for message */
92 struct object obj
; /* object header */
93 user_handle_t focus
; /* focus window */
94 user_handle_t capture
; /* capture window */
95 user_handle_t active
; /* active window */
96 user_handle_t menu_owner
; /* current menu owner window */
97 user_handle_t move_size
; /* current moving/resizing window */
98 user_handle_t caret
; /* caret window */
99 rectangle_t caret_rect
; /* caret rectangle */
100 int caret_hide
; /* caret hide count */
101 int caret_state
; /* caret on/off state */
102 struct message
*msg
; /* message currently processed */
103 struct thread
*msg_thread
; /* thread processing the message */
104 struct list msg_list
; /* list of hardware messages */
105 unsigned char keystate
[256]; /* state of each key */
110 struct object obj
; /* object header */
111 unsigned int wake_bits
; /* wakeup bits */
112 unsigned int wake_mask
; /* wakeup mask */
113 unsigned int changed_bits
; /* changed wakeup bits */
114 unsigned int changed_mask
; /* changed wakeup mask */
115 int paint_count
; /* pending paint messages count */
116 struct list msg_list
[NB_MSG_KINDS
]; /* lists of messages */
117 struct list send_result
; /* stack of sent messages waiting for result */
118 struct list callback_result
; /* list of callback messages waiting for result */
119 struct message_result
*recv_result
; /* stack of received messages waiting for result */
120 struct list pending_timers
; /* list of pending timers */
121 struct list expired_timers
; /* list of expired timers */
122 unsigned int next_timer_id
; /* id for the next timer with a 0 window */
123 struct timeout_user
*timeout
; /* timeout for next timer to expire */
124 struct thread_input
*input
; /* thread input descriptor */
125 struct hook_table
*hooks
; /* hook table */
126 struct timeval last_get_msg
; /* time of last get message call */
129 static void msg_queue_dump( struct object
*obj
, int verbose
);
130 static int msg_queue_add_queue( struct object
*obj
, struct wait_queue_entry
*entry
);
131 static void msg_queue_remove_queue( struct object
*obj
, struct wait_queue_entry
*entry
);
132 static int msg_queue_signaled( struct object
*obj
, struct thread
*thread
);
133 static int msg_queue_satisfied( struct object
*obj
, struct thread
*thread
);
134 static void msg_queue_destroy( struct object
*obj
);
135 static void thread_input_dump( struct object
*obj
, int verbose
);
136 static void thread_input_destroy( struct object
*obj
);
137 static void timer_callback( void *private );
139 static const struct object_ops msg_queue_ops
=
141 sizeof(struct msg_queue
), /* size */
142 msg_queue_dump
, /* dump */
143 msg_queue_add_queue
, /* add_queue */
144 msg_queue_remove_queue
, /* remove_queue */
145 msg_queue_signaled
, /* signaled */
146 msg_queue_satisfied
, /* satisfied */
147 no_get_fd
, /* get_fd */
148 msg_queue_destroy
/* destroy */
152 static const struct object_ops thread_input_ops
=
154 sizeof(struct thread_input
), /* size */
155 thread_input_dump
, /* dump */
156 no_add_queue
, /* add_queue */
157 NULL
, /* remove_queue */
159 NULL
, /* satisfied */
160 no_get_fd
, /* get_fd */
161 thread_input_destroy
/* destroy */
164 /* pointer to input structure of foreground thread */
165 static struct thread_input
*foreground_input
;
168 /* set the caret window in a given thread input */
169 static void set_caret_window( struct thread_input
*input
, user_handle_t win
)
171 if (!win
|| win
!= input
->caret
)
173 input
->caret_rect
.left
= 0;
174 input
->caret_rect
.top
= 0;
175 input
->caret_rect
.right
= 0;
176 input
->caret_rect
.bottom
= 0;
179 input
->caret_hide
= 1;
180 input
->caret_state
= 0;
183 /* create a thread input object */
184 static struct thread_input
*create_thread_input(void)
186 struct thread_input
*input
;
188 if ((input
= alloc_object( &thread_input_ops
)))
193 input
->menu_owner
= 0;
194 input
->move_size
= 0;
196 input
->msg_thread
= NULL
;
197 list_init( &input
->msg_list
);
198 set_caret_window( input
, 0 );
199 memset( input
->keystate
, 0, sizeof(input
->keystate
) );
204 /* release the thread input data of a given thread */
205 static void release_thread_input( struct thread
*thread
)
207 struct thread_input
*input
= thread
->queue
->input
;
210 if (input
->msg_thread
== thread
)
212 release_object( input
->msg_thread
);
213 input
->msg_thread
= NULL
;
216 release_object( input
);
217 thread
->queue
->input
= NULL
;
220 /* create a message queue object */
221 static struct msg_queue
*create_msg_queue( struct thread
*thread
, struct thread_input
*input
)
223 struct msg_queue
*queue
;
226 if (!input
&& !(input
= create_thread_input())) return NULL
;
227 if ((queue
= alloc_object( &msg_queue_ops
)))
229 queue
->wake_bits
= 0;
230 queue
->wake_mask
= 0;
231 queue
->changed_bits
= 0;
232 queue
->changed_mask
= 0;
233 queue
->paint_count
= 0;
234 queue
->recv_result
= NULL
;
235 queue
->next_timer_id
= 1;
236 queue
->timeout
= NULL
;
237 queue
->input
= (struct thread_input
*)grab_object( input
);
239 gettimeofday( &queue
->last_get_msg
, NULL
);
240 list_init( &queue
->send_result
);
241 list_init( &queue
->callback_result
);
242 list_init( &queue
->pending_timers
);
243 list_init( &queue
->expired_timers
);
244 for (i
= 0; i
< NB_MSG_KINDS
; i
++) list_init( &queue
->msg_list
[i
] );
246 thread
->queue
= queue
;
247 if (!thread
->process
->queue
)
248 thread
->process
->queue
= (struct msg_queue
*)grab_object( queue
);
250 release_object( input
);
254 /* free the message queue of a thread at thread exit */
255 void free_msg_queue( struct thread
*thread
)
257 struct process
*process
= thread
->process
;
258 struct thread_input
*input
;
260 remove_thread_hooks( thread
);
261 if (!thread
->queue
) return;
262 if (process
->queue
== thread
->queue
) /* is it the process main queue? */
264 release_object( process
->queue
);
265 process
->queue
= NULL
;
266 if (process
->idle_event
)
268 set_event( process
->idle_event
);
269 release_object( process
->idle_event
);
270 process
->idle_event
= NULL
;
273 input
= thread
->queue
->input
;
274 if (input
->msg_thread
== thread
)
276 release_object( input
->msg_thread
);
277 input
->msg_thread
= NULL
;
280 release_object( thread
->queue
);
281 thread
->queue
= NULL
;
284 /* get the hook table for a given thread */
285 struct hook_table
*get_queue_hooks( struct thread
*thread
)
287 if (!thread
->queue
) return NULL
;
288 return thread
->queue
->hooks
;
291 /* set the hook table for a given thread, allocating the queue if needed */
292 void set_queue_hooks( struct thread
*thread
, struct hook_table
*hooks
)
294 struct msg_queue
*queue
= thread
->queue
;
295 if (!queue
) queue
= create_msg_queue( thread
, NULL
);
296 if (queue
->hooks
) release_object( queue
->hooks
);
297 queue
->hooks
= hooks
;
300 /* check the queue status */
301 inline static int is_signaled( struct msg_queue
*queue
)
303 return ((queue
->wake_bits
& queue
->wake_mask
) || (queue
->changed_bits
& queue
->changed_mask
));
306 /* set some queue bits */
307 inline static void set_queue_bits( struct msg_queue
*queue
, unsigned int bits
)
309 queue
->wake_bits
|= bits
;
310 queue
->changed_bits
|= bits
;
311 if (is_signaled( queue
)) wake_up( &queue
->obj
, 0 );
314 /* clear some queue bits */
315 inline static void clear_queue_bits( struct msg_queue
*queue
, unsigned int bits
)
317 queue
->wake_bits
&= ~bits
;
318 queue
->changed_bits
&= ~bits
;
321 /* check whether msg is a keyboard message */
322 inline static int is_keyboard_msg( struct message
*msg
)
324 return (msg
->msg
>= WM_KEYFIRST
&& msg
->msg
<= WM_KEYLAST
);
327 /* get the QS_* bit corresponding to a given hardware message */
328 inline static int get_hardware_msg_bit( struct message
*msg
)
330 if (msg
->msg
== WM_MOUSEMOVE
|| msg
->msg
== WM_NCMOUSEMOVE
) return QS_MOUSEMOVE
;
331 if (is_keyboard_msg( msg
)) return QS_KEY
;
332 return QS_MOUSEBUTTON
;
335 /* get the current thread queue, creating it if needed */
336 inline static struct msg_queue
*get_current_queue(void)
338 struct msg_queue
*queue
= current
->queue
;
339 if (!queue
) queue
= create_msg_queue( current
, NULL
);
343 /* try to merge a message with the last in the list; return 1 if successful */
344 static int merge_message( struct thread_input
*input
, const struct message
*msg
)
346 struct message
*prev
;
347 struct list
*ptr
= list_tail( &input
->msg_list
);
350 prev
= LIST_ENTRY( ptr
, struct message
, entry
);
351 if (input
->msg
== prev
) return 0;
352 if (prev
->result
) return 0;
353 if (prev
->win
!= msg
->win
) return 0;
354 if (prev
->msg
!= msg
->msg
) return 0;
355 if (prev
->type
!= msg
->type
) return 0;
356 /* now we can merge it */
357 prev
->wparam
= msg
->wparam
;
358 prev
->lparam
= msg
->lparam
;
361 prev
->time
= msg
->time
;
362 prev
->info
= msg
->info
;
366 /* free a result structure */
367 static void free_result( struct message_result
*result
)
369 if (result
->timeout
) remove_timeout_user( result
->timeout
);
370 if (result
->data
) free( result
->data
);
371 if (result
->callback_msg
) free( result
->callback_msg
);
375 /* remove the result from the sender list it is on */
376 static inline void remove_result_from_sender( struct message_result
*result
)
378 assert( result
->sender
);
380 list_remove( &result
->sender_entry
);
381 result
->sender
= NULL
;
382 if (!result
->receiver
) free_result( result
);
385 /* store the message result in the appropriate structure */
386 static void store_message_result( struct message_result
*res
, unsigned int result
,
389 res
->result
= result
;
394 remove_timeout_user( res
->timeout
);
399 if (res
->callback_msg
)
401 /* queue the callback message in the sender queue */
402 res
->callback_msg
->lparam
= result
;
403 list_add_tail( &res
->sender
->msg_list
[SEND_MESSAGE
], &res
->callback_msg
->entry
);
404 set_queue_bits( res
->sender
, QS_SENDMESSAGE
);
405 res
->callback_msg
= NULL
;
406 remove_result_from_sender( res
);
410 /* wake sender queue if waiting on this result */
411 if (list_head(&res
->sender
->send_result
) == &res
->sender_entry
)
412 set_queue_bits( res
->sender
, QS_SMRESULT
);
418 /* free a message when deleting a queue or window */
419 static void free_message( struct message
*msg
)
421 struct message_result
*result
= msg
->result
;
426 result
->receiver
= NULL
;
427 store_message_result( result
, 0, STATUS_ACCESS_DENIED
/*FIXME*/ );
429 else free_result( result
);
431 if (msg
->data
) free( msg
->data
);
435 /* remove (and free) a message from a message list */
436 static void remove_queue_message( struct msg_queue
*queue
, struct message
*msg
,
437 enum message_kind kind
)
439 list_remove( &msg
->entry
);
443 if (list_empty( &queue
->msg_list
[kind
] )) clear_queue_bits( queue
, QS_SENDMESSAGE
);
446 if (list_empty( &queue
->msg_list
[kind
] )) clear_queue_bits( queue
, QS_POSTMESSAGE
);
452 /* message timed out without getting a reply */
453 static void result_timeout( void *private )
455 struct message_result
*result
= private;
457 assert( !result
->replied
);
459 result
->timeout
= NULL
;
460 store_message_result( result
, 0, STATUS_TIMEOUT
);
463 /* allocate and fill a message result structure */
464 static struct message_result
*alloc_message_result( struct msg_queue
*send_queue
,
465 struct msg_queue
*recv_queue
,
466 struct message
*msg
, unsigned int timeout
,
467 void *callback
, unsigned int callback_data
)
469 struct message_result
*result
= mem_alloc( sizeof(*result
) );
472 result
->sender
= send_queue
;
473 result
->receiver
= recv_queue
;
476 result
->data_size
= 0;
477 result
->timeout
= NULL
;
479 if (msg
->type
== MSG_CALLBACK
)
481 struct message
*callback_msg
= mem_alloc( sizeof(*callback_msg
) );
487 callback_msg
->type
= MSG_CALLBACK_RESULT
;
488 callback_msg
->win
= msg
->win
;
489 callback_msg
->msg
= msg
->msg
;
490 callback_msg
->wparam
= (unsigned int)callback
;
491 callback_msg
->lparam
= 0;
492 callback_msg
->time
= get_tick_count();
495 callback_msg
->info
= callback_data
;
496 callback_msg
->hook
= 0;
497 callback_msg
->hook_proc
= NULL
;
498 callback_msg
->result
= NULL
;
499 callback_msg
->data
= NULL
;
500 callback_msg
->data_size
= 0;
502 result
->callback_msg
= callback_msg
;
503 list_add_head( &send_queue
->callback_result
, &result
->sender_entry
);
507 result
->callback_msg
= NULL
;
508 list_add_head( &send_queue
->send_result
, &result
->sender_entry
);
514 gettimeofday( &when
, 0 );
515 add_timeout( &when
, timeout
);
516 result
->timeout
= add_timeout_user( &when
, result_timeout
, result
);
522 /* receive a message, removing it from the sent queue */
523 static void receive_message( struct msg_queue
*queue
, struct message
*msg
,
524 struct get_message_reply
*reply
)
526 struct message_result
*result
= msg
->result
;
528 reply
->total
= msg
->data_size
;
529 if (msg
->data_size
> get_reply_max_size())
531 set_error( STATUS_BUFFER_OVERFLOW
);
534 reply
->type
= msg
->type
;
535 reply
->win
= msg
->win
;
536 reply
->msg
= msg
->msg
;
537 reply
->wparam
= msg
->wparam
;
538 reply
->lparam
= msg
->lparam
;
541 reply
->time
= msg
->time
;
542 reply
->info
= msg
->info
;
543 reply
->hook
= msg
->hook
;
544 reply
->hook_proc
= msg
->hook_proc
;
546 if (msg
->data
) set_reply_data_ptr( msg
->data
, msg
->data_size
);
548 list_remove( &msg
->entry
);
549 /* put the result on the receiver result stack */
552 result
->recv_next
= queue
->recv_result
;
553 queue
->recv_result
= result
;
556 if (list_empty( &queue
->msg_list
[SEND_MESSAGE
] )) clear_queue_bits( queue
, QS_SENDMESSAGE
);
559 /* set the result of the current received message */
560 static void reply_message( struct msg_queue
*queue
, unsigned int result
,
561 unsigned int error
, int remove
, const void *data
, size_t len
)
563 struct message_result
*res
= queue
->recv_result
;
567 queue
->recv_result
= res
->recv_next
;
568 res
->receiver
= NULL
;
569 if (!res
->sender
) /* no one waiting for it */
577 if (len
&& (res
->data
= memdup( data
, len
))) res
->data_size
= len
;
578 store_message_result( res
, result
, error
);
582 /* retrieve a posted message */
583 static int get_posted_message( struct msg_queue
*queue
, user_handle_t win
,
584 unsigned int first
, unsigned int last
, unsigned int flags
,
585 struct get_message_reply
*reply
)
589 /* check against the filters */
590 LIST_FOR_EACH_ENTRY( msg
, &queue
->msg_list
[POST_MESSAGE
], struct message
, entry
)
592 if (msg
->msg
== WM_QUIT
) goto found
; /* WM_QUIT is never filtered */
593 if (win
&& msg
->win
&& msg
->win
!= win
&& !is_child_window( win
, msg
->win
)) continue;
594 if (msg
->msg
< first
) continue;
595 if (msg
->msg
> last
) continue;
596 goto found
; /* found one */
600 /* return it to the app */
602 reply
->total
= msg
->data_size
;
603 if (msg
->data_size
> get_reply_max_size())
605 set_error( STATUS_BUFFER_OVERFLOW
);
608 reply
->type
= msg
->type
;
609 reply
->win
= msg
->win
;
610 reply
->msg
= msg
->msg
;
611 reply
->wparam
= msg
->wparam
;
612 reply
->lparam
= msg
->lparam
;
615 reply
->time
= msg
->time
;
616 reply
->info
= msg
->info
;
618 if (flags
& GET_MSG_REMOVE
)
622 set_reply_data_ptr( msg
->data
, msg
->data_size
);
626 remove_queue_message( queue
, msg
, POST_MESSAGE
);
628 else if (msg
->data
) set_reply_data( msg
->data
, msg
->data_size
);
633 /* empty a message list and free all the messages */
634 static void empty_msg_list( struct list
*list
)
638 while ((ptr
= list_head( list
)) != NULL
)
640 struct message
*msg
= LIST_ENTRY( ptr
, struct message
, entry
);
641 list_remove( &msg
->entry
);
646 /* cleanup all pending results when deleting a queue */
647 static void cleanup_results( struct msg_queue
*queue
)
651 while ((entry
= list_head( &queue
->send_result
)) != NULL
)
653 remove_result_from_sender( LIST_ENTRY( entry
, struct message_result
, sender_entry
) );
656 while ((entry
= list_head( &queue
->callback_result
)) != NULL
)
658 remove_result_from_sender( LIST_ENTRY( entry
, struct message_result
, sender_entry
) );
661 while (queue
->recv_result
)
662 reply_message( queue
, 0, STATUS_ACCESS_DENIED
/*FIXME*/, 1, NULL
, 0 );
665 /* check if the thread owning the queue is hung (not checking for messages) */
666 static int is_queue_hung( struct msg_queue
*queue
)
669 struct wait_queue_entry
*entry
;
671 gettimeofday( &now
, NULL
);
672 if (now
.tv_sec
- queue
->last_get_msg
.tv_sec
<= 5)
673 return 0; /* less than 5 seconds since last get message -> not hung */
675 LIST_FOR_EACH_ENTRY( entry
, &queue
->obj
.wait_queue
, struct wait_queue_entry
, entry
)
677 if (entry
->thread
->queue
== queue
)
678 return 0; /* thread is waiting on queue -> not hung */
683 static int msg_queue_add_queue( struct object
*obj
, struct wait_queue_entry
*entry
)
685 struct msg_queue
*queue
= (struct msg_queue
*)obj
;
686 struct process
*process
= entry
->thread
->process
;
688 /* a thread can only wait on its own queue */
689 if (entry
->thread
->queue
!= queue
)
691 set_error( STATUS_ACCESS_DENIED
);
694 /* if waiting on the main process queue, set the idle event */
695 if (process
->queue
== queue
)
697 if (process
->idle_event
) set_event( process
->idle_event
);
699 add_queue( obj
, entry
);
703 static void msg_queue_remove_queue(struct object
*obj
, struct wait_queue_entry
*entry
)
705 struct msg_queue
*queue
= (struct msg_queue
*)obj
;
706 struct process
*process
= entry
->thread
->process
;
708 remove_queue( obj
, entry
);
710 assert( entry
->thread
->queue
== queue
);
712 /* if waiting on the main process queue, reset the idle event */
713 if (process
->queue
== queue
)
715 if (process
->idle_event
) reset_event( process
->idle_event
);
719 static void msg_queue_dump( struct object
*obj
, int verbose
)
721 struct msg_queue
*queue
= (struct msg_queue
*)obj
;
722 fprintf( stderr
, "Msg queue bits=%x mask=%x\n",
723 queue
->wake_bits
, queue
->wake_mask
);
726 static int msg_queue_signaled( struct object
*obj
, struct thread
*thread
)
728 struct msg_queue
*queue
= (struct msg_queue
*)obj
;
729 return is_signaled( queue
);
732 static int msg_queue_satisfied( struct object
*obj
, struct thread
*thread
)
734 struct msg_queue
*queue
= (struct msg_queue
*)obj
;
735 queue
->wake_mask
= 0;
736 queue
->changed_mask
= 0;
737 return 0; /* Not abandoned */
740 static void msg_queue_destroy( struct object
*obj
)
742 struct msg_queue
*queue
= (struct msg_queue
*)obj
;
746 cleanup_results( queue
);
747 for (i
= 0; i
< NB_MSG_KINDS
; i
++) empty_msg_list( &queue
->msg_list
[i
] );
749 while ((ptr
= list_head( &queue
->pending_timers
)))
751 struct timer
*timer
= LIST_ENTRY( ptr
, struct timer
, entry
);
752 list_remove( &timer
->entry
);
755 while ((ptr
= list_head( &queue
->expired_timers
)))
757 struct timer
*timer
= LIST_ENTRY( ptr
, struct timer
, entry
);
758 list_remove( &timer
->entry
);
761 if (queue
->timeout
) remove_timeout_user( queue
->timeout
);
762 if (queue
->input
) release_object( queue
->input
);
763 if (queue
->hooks
) release_object( queue
->hooks
);
766 static void thread_input_dump( struct object
*obj
, int verbose
)
768 struct thread_input
*input
= (struct thread_input
*)obj
;
769 fprintf( stderr
, "Thread input focus=%p capture=%p active=%p\n",
770 input
->focus
, input
->capture
, input
->active
);
773 static void thread_input_destroy( struct object
*obj
)
775 struct thread_input
*input
= (struct thread_input
*)obj
;
777 if (foreground_input
== input
) foreground_input
= NULL
;
778 if (input
->msg_thread
) release_object( input
->msg_thread
);
779 empty_msg_list( &input
->msg_list
);
782 /* fix the thread input data when a window is destroyed */
783 inline static void thread_input_cleanup_window( struct msg_queue
*queue
, user_handle_t window
)
785 struct thread_input
*input
= queue
->input
;
787 if (window
== input
->focus
) input
->focus
= 0;
788 if (window
== input
->capture
) input
->capture
= 0;
789 if (window
== input
->active
) input
->active
= 0;
790 if (window
== input
->menu_owner
) input
->menu_owner
= 0;
791 if (window
== input
->move_size
) input
->move_size
= 0;
792 if (window
== input
->caret
) set_caret_window( input
, 0 );
795 /* check if the specified window can be set in the input data of a given queue */
796 static int check_queue_input_window( struct msg_queue
*queue
, user_handle_t window
)
798 struct thread
*thread
;
801 if (!window
) return 1; /* we can always clear the data */
803 if ((thread
= get_window_thread( window
)))
805 ret
= (queue
->input
== thread
->queue
->input
);
806 if (!ret
) set_error( STATUS_ACCESS_DENIED
);
807 release_object( thread
);
809 else set_error( STATUS_INVALID_HANDLE
);
814 /* attach two thread input data structures */
815 int attach_thread_input( struct thread
*thread_from
, struct thread
*thread_to
)
817 struct thread_input
*input
;
819 if (!thread_to
->queue
&& !(thread_to
->queue
= create_msg_queue( thread_to
, NULL
))) return 0;
820 input
= (struct thread_input
*)grab_object( thread_to
->queue
->input
);
822 if (thread_from
->queue
)
824 release_thread_input( thread_from
);
825 thread_from
->queue
->input
= input
;
829 if (!(thread_from
->queue
= create_msg_queue( thread_from
, input
))) return 0;
831 memset( input
->keystate
, 0, sizeof(input
->keystate
) );
835 /* detach two thread input data structures */
836 static void detach_thread_input( struct thread
*thread_from
, struct thread
*thread_to
)
838 struct thread_input
*input
;
840 if (!thread_from
->queue
|| !thread_to
->queue
||
841 thread_from
->queue
->input
!= thread_to
->queue
->input
)
843 set_error( STATUS_ACCESS_DENIED
);
846 if ((input
= create_thread_input()))
848 release_thread_input( thread_from
);
849 thread_from
->queue
->input
= input
;
854 /* set the next timer to expire */
855 static void set_next_timer( struct msg_queue
*queue
)
861 remove_timeout_user( queue
->timeout
);
862 queue
->timeout
= NULL
;
864 if ((ptr
= list_head( &queue
->pending_timers
)))
866 struct timer
*timer
= LIST_ENTRY( ptr
, struct timer
, entry
);
867 queue
->timeout
= add_timeout_user( &timer
->when
, timer_callback
, queue
);
869 /* set/clear QS_TIMER bit */
870 if (list_empty( &queue
->expired_timers
))
871 clear_queue_bits( queue
, QS_TIMER
);
873 set_queue_bits( queue
, QS_TIMER
);
876 /* find a timer from its window and id */
877 static struct timer
*find_timer( struct msg_queue
*queue
, user_handle_t win
,
878 unsigned int msg
, unsigned int id
)
882 /* we need to search both lists */
884 LIST_FOR_EACH( ptr
, &queue
->pending_timers
)
886 struct timer
*timer
= LIST_ENTRY( ptr
, struct timer
, entry
);
887 if (timer
->win
== win
&& timer
->msg
== msg
&& timer
->id
== id
) return timer
;
889 LIST_FOR_EACH( ptr
, &queue
->expired_timers
)
891 struct timer
*timer
= LIST_ENTRY( ptr
, struct timer
, entry
);
892 if (timer
->win
== win
&& timer
->msg
== msg
&& timer
->id
== id
) return timer
;
897 /* callback for the next timer expiration */
898 static void timer_callback( void *private )
900 struct msg_queue
*queue
= private;
903 queue
->timeout
= NULL
;
904 /* move on to the next timer */
905 ptr
= list_head( &queue
->pending_timers
);
907 list_add_tail( &queue
->expired_timers
, ptr
);
908 set_next_timer( queue
);
911 /* link a timer at its rightful place in the queue list */
912 static void link_timer( struct msg_queue
*queue
, struct timer
*timer
)
916 for (ptr
= queue
->pending_timers
.next
; ptr
!= &queue
->pending_timers
; ptr
= ptr
->next
)
918 struct timer
*t
= LIST_ENTRY( ptr
, struct timer
, entry
);
919 if (!time_before( &t
->when
, &timer
->when
)) break;
921 list_add_before( ptr
, &timer
->entry
);
924 /* remove a timer from the queue timer list and free it */
925 static void free_timer( struct msg_queue
*queue
, struct timer
*timer
)
927 list_remove( &timer
->entry
);
929 set_next_timer( queue
);
932 /* restart an expired timer */
933 static void restart_timer( struct msg_queue
*queue
, struct timer
*timer
)
937 list_remove( &timer
->entry
);
938 gettimeofday( &now
, 0 );
939 while (!time_before( &now
, &timer
->when
)) add_timeout( &timer
->when
, timer
->rate
);
940 link_timer( queue
, timer
);
941 set_next_timer( queue
);
944 /* find an expired timer matching the filtering parameters */
945 static struct timer
*find_expired_timer( struct msg_queue
*queue
, user_handle_t win
,
946 unsigned int get_first
, unsigned int get_last
,
951 LIST_FOR_EACH( ptr
, &queue
->expired_timers
)
953 struct timer
*timer
= LIST_ENTRY( ptr
, struct timer
, entry
);
954 if (win
&& timer
->win
!= win
) continue;
955 if (timer
->msg
>= get_first
&& timer
->msg
<= get_last
)
957 if (remove
) restart_timer( queue
, timer
);
965 static struct timer
*set_timer( struct msg_queue
*queue
, unsigned int rate
)
967 struct timer
*timer
= mem_alloc( sizeof(*timer
) );
970 timer
->rate
= max( rate
, 1 );
971 gettimeofday( &timer
->when
, 0 );
972 add_timeout( &timer
->when
, rate
);
973 link_timer( queue
, timer
);
974 /* check if we replaced the next timer */
975 if (list_head( &queue
->pending_timers
) == &timer
->entry
) set_next_timer( queue
);
980 /* change the input key state for a given key */
981 static void set_input_key_state( struct thread_input
*input
, unsigned char key
, int down
)
985 if (!(input
->keystate
[key
] & 0x80)) input
->keystate
[key
] ^= 0x01;
986 input
->keystate
[key
] |= 0x80;
988 else input
->keystate
[key
] &= ~0x80;
991 /* update the input key state for a keyboard message */
992 static void update_input_key_state( struct thread_input
*input
, const struct message
*msg
)
995 int down
= 0, extended
;
1003 set_input_key_state( input
, VK_LBUTTON
, down
);
1005 case WM_MBUTTONDOWN
:
1009 set_input_key_state( input
, VK_MBUTTON
, down
);
1011 case WM_RBUTTONDOWN
:
1015 set_input_key_state( input
, VK_RBUTTON
, down
);
1023 key
= (unsigned char)msg
->wparam
;
1024 extended
= ((msg
->lparam
>> 16) & KF_EXTENDED
) != 0;
1025 set_input_key_state( input
, key
, down
);
1029 set_input_key_state( input
, extended
? VK_RSHIFT
: VK_LSHIFT
, down
);
1032 set_input_key_state( input
, extended
? VK_RCONTROL
: VK_LCONTROL
, down
);
1035 set_input_key_state( input
, extended
? VK_RMENU
: VK_LMENU
, down
);
1042 /* release the hardware message currently being processed by the given thread */
1043 static void release_hardware_message( struct thread
*thread
, int remove
)
1045 struct thread_input
*input
= thread
->queue
->input
;
1047 if (input
->msg_thread
!= thread
) return;
1050 struct message
*other
;
1053 update_input_key_state( input
, input
->msg
);
1054 list_remove( &input
->msg
->entry
);
1055 clr_bit
= get_hardware_msg_bit( input
->msg
);
1056 LIST_FOR_EACH_ENTRY( other
, &input
->msg_list
, struct message
, entry
)
1058 if (get_hardware_msg_bit( other
) == clr_bit
)
1064 if (clr_bit
) clear_queue_bits( thread
->queue
, clr_bit
);
1065 free_message( input
->msg
);
1067 release_object( input
->msg_thread
);
1069 input
->msg_thread
= NULL
;
1072 /* find the window that should receive a given hardware message */
1073 static user_handle_t
find_hardware_message_window( struct thread_input
*input
, struct message
*msg
,
1074 unsigned int *msg_code
)
1076 user_handle_t win
= 0;
1078 *msg_code
= msg
->msg
;
1079 if (is_keyboard_msg( msg
))
1081 if (input
&& !(win
= input
->focus
))
1083 win
= input
->active
;
1084 if (*msg_code
< WM_SYSKEYDOWN
) *msg_code
+= WM_SYSKEYDOWN
- WM_KEYDOWN
;
1087 else /* mouse message */
1089 if (!input
|| !(win
= input
->capture
))
1091 if (!(win
= msg
->win
) || !is_window_visible( win
))
1092 win
= window_from_point( msg
->x
, msg
->y
);
1098 /* queue a hardware message into a given thread input */
1099 static void queue_hardware_message( struct msg_queue
*queue
, struct message
*msg
)
1102 struct thread
*thread
;
1103 struct thread_input
*input
;
1104 unsigned int msg_code
;
1106 win
= find_hardware_message_window( queue
? queue
->input
: foreground_input
, msg
, &msg_code
);
1107 if (!win
|| !(thread
= get_window_thread(win
)))
1112 input
= thread
->queue
->input
;
1114 if (msg
->msg
== WM_MOUSEMOVE
&& merge_message( input
, msg
)) free( msg
);
1117 list_add_tail( &input
->msg_list
, &msg
->entry
);
1118 set_queue_bits( thread
->queue
, get_hardware_msg_bit(msg
) );
1120 release_object( thread
);
1123 /* find a hardware message for the given queue */
1124 static int get_hardware_message( struct thread
*thread
, struct message
*first
,
1125 user_handle_t filter_win
, struct get_message_reply
*reply
)
1127 struct thread_input
*input
= thread
->queue
->input
;
1128 struct thread
*win_thread
;
1131 int clear_bits
, got_one
= 0;
1132 unsigned int msg_code
;
1134 if (input
->msg_thread
&& input
->msg_thread
!= thread
)
1135 return 0; /* locked by another thread */
1139 ptr
= list_head( &input
->msg_list
);
1140 clear_bits
= QS_KEY
| QS_MOUSEMOVE
| QS_MOUSEBUTTON
;
1144 ptr
= list_next( &input
->msg_list
, &first
->entry
);
1145 clear_bits
= 0; /* don't clear bits if we don't go through the whole list */
1150 struct message
*msg
= LIST_ENTRY( ptr
, struct message
, entry
);
1151 win
= find_hardware_message_window( input
, msg
, &msg_code
);
1152 if (!win
|| !(win_thread
= get_window_thread( win
)))
1154 /* no window at all, remove it */
1155 ptr
= list_next( &input
->msg_list
, ptr
);
1156 update_input_key_state( input
, msg
);
1157 list_remove( &msg
->entry
);
1158 free_message( msg
);
1161 if (win_thread
!= thread
)
1163 /* wake the other thread */
1164 set_queue_bits( win_thread
->queue
, get_hardware_msg_bit(msg
) );
1165 release_object( win_thread
);
1167 ptr
= list_next( &input
->msg_list
, ptr
);
1170 /* if we already got a message for another thread, or if it doesn't
1171 * match the filter we skip it (filter is only checked for keyboard
1172 * messages since the dest window for a mouse message depends on hittest)
1175 (filter_win
&& is_keyboard_msg(msg
) &&
1176 win
!= filter_win
&& !is_child_window( filter_win
, win
)))
1178 clear_bits
&= ~get_hardware_msg_bit( msg
);
1179 release_object( win_thread
);
1180 ptr
= list_next( &input
->msg_list
, ptr
);
1183 /* now we can return it */
1184 if (!input
->msg_thread
) input
->msg_thread
= win_thread
;
1185 else release_object( win_thread
);
1188 reply
->type
= MSG_HARDWARE
;
1190 reply
->msg
= msg_code
;
1191 reply
->wparam
= msg
->wparam
;
1192 reply
->lparam
= msg
->lparam
;
1195 reply
->time
= msg
->time
;
1196 reply
->info
= msg
->info
;
1199 /* nothing found, clear the hardware queue bits */
1200 clear_queue_bits( thread
->queue
, clear_bits
);
1201 if (input
->msg_thread
) release_object( input
->msg_thread
);
1203 input
->msg_thread
= NULL
;
1207 /* increment (or decrement if 'incr' is negative) the queue paint count */
1208 void inc_queue_paint_count( struct thread
*thread
, int incr
)
1210 struct msg_queue
*queue
= thread
->queue
;
1214 if ((queue
->paint_count
+= incr
) < 0) queue
->paint_count
= 0;
1216 if (queue
->paint_count
)
1217 set_queue_bits( queue
, QS_PAINT
);
1219 clear_queue_bits( queue
, QS_PAINT
);
1223 /* remove all messages and timers belonging to a certain window */
1224 void queue_cleanup_window( struct thread
*thread
, user_handle_t win
)
1226 struct msg_queue
*queue
= thread
->queue
;
1234 ptr
= list_head( &queue
->pending_timers
);
1237 struct list
*next
= list_next( &queue
->pending_timers
, ptr
);
1238 struct timer
*timer
= LIST_ENTRY( ptr
, struct timer
, entry
);
1239 if (timer
->win
== win
) free_timer( queue
, timer
);
1242 ptr
= list_head( &queue
->expired_timers
);
1245 struct list
*next
= list_next( &queue
->expired_timers
, ptr
);
1246 struct timer
*timer
= LIST_ENTRY( ptr
, struct timer
, entry
);
1247 if (timer
->win
== win
) free_timer( queue
, timer
);
1251 /* remove messages */
1252 for (i
= 0; i
< NB_MSG_KINDS
; i
++)
1254 struct list
*ptr
, *next
;
1256 LIST_FOR_EACH_SAFE( ptr
, next
, &queue
->msg_list
[i
] )
1258 struct message
*msg
= LIST_ENTRY( ptr
, struct message
, entry
);
1259 if (msg
->win
== win
) remove_queue_message( queue
, msg
, i
);
1263 thread_input_cleanup_window( queue
, win
);
1266 /* post a message to a window; used by socket handling */
1267 void post_message( user_handle_t win
, unsigned int message
,
1268 unsigned int wparam
, unsigned int lparam
)
1270 struct message
*msg
;
1271 struct thread
*thread
= get_window_thread( win
);
1273 if (!thread
) return;
1275 if (thread
->queue
&& (msg
= mem_alloc( sizeof(*msg
) )))
1277 msg
->type
= MSG_POSTED
;
1278 msg
->win
= get_user_full_handle( win
);
1280 msg
->wparam
= wparam
;
1281 msg
->lparam
= lparam
;
1282 msg
->time
= get_tick_count();
1287 msg
->hook_proc
= NULL
;
1292 list_add_tail( &thread
->queue
->msg_list
[POST_MESSAGE
], &msg
->entry
);
1293 set_queue_bits( thread
->queue
, QS_POSTMESSAGE
);
1295 release_object( thread
);
1298 /* post a win event */
1299 void post_win_event( struct thread
*thread
, unsigned int event
,
1300 user_handle_t win
, unsigned int object_id
,
1301 unsigned int child_id
, void *hook_proc
,
1302 const WCHAR
*module
, size_t module_size
,
1305 struct message
*msg
;
1307 if (thread
->queue
&& (msg
= mem_alloc( sizeof(*msg
) )))
1309 msg
->type
= MSG_WINEVENT
;
1310 msg
->win
= get_user_full_handle( win
);
1312 msg
->wparam
= object_id
;
1313 msg
->lparam
= child_id
;
1314 msg
->time
= get_tick_count();
1317 msg
->info
= get_thread_id( current
);
1320 msg
->hook_proc
= hook_proc
;
1322 if ((msg
->data
= malloc( module_size
)))
1324 msg
->data_size
= module_size
;
1325 memcpy( msg
->data
, module
, module_size
);
1327 if (debug_level
> 1)
1328 fprintf( stderr
, "post_win_event: tid %04x event %04x win %p object_id %d child_id %d\n",
1329 get_thread_id(thread
), event
, win
, object_id
, child_id
);
1330 list_add_tail( &thread
->queue
->msg_list
[SEND_MESSAGE
], &msg
->entry
);
1331 set_queue_bits( thread
->queue
, QS_SENDMESSAGE
);
1338 /* get the message queue of the current thread */
1339 DECL_HANDLER(get_msg_queue
)
1341 struct msg_queue
*queue
= get_current_queue();
1344 if (queue
) reply
->handle
= alloc_handle( current
->process
, queue
, SYNCHRONIZE
, 0 );
1348 /* set the current message queue wakeup mask */
1349 DECL_HANDLER(set_queue_mask
)
1351 struct msg_queue
*queue
= get_current_queue();
1355 queue
->wake_mask
= req
->wake_mask
;
1356 queue
->changed_mask
= req
->changed_mask
;
1357 reply
->wake_bits
= queue
->wake_bits
;
1358 reply
->changed_bits
= queue
->changed_bits
;
1359 if (is_signaled( queue
))
1361 /* if skip wait is set, do what would have been done in the subsequent wait */
1362 if (req
->skip_wait
) msg_queue_satisfied( &queue
->obj
, current
);
1363 else wake_up( &queue
->obj
, 0 );
1369 /* get the current message queue status */
1370 DECL_HANDLER(get_queue_status
)
1372 struct msg_queue
*queue
= current
->queue
;
1375 reply
->wake_bits
= queue
->wake_bits
;
1376 reply
->changed_bits
= queue
->changed_bits
;
1377 if (req
->clear
) queue
->changed_bits
= 0;
1379 else reply
->wake_bits
= reply
->changed_bits
= 0;
1383 /* send a message to a thread queue */
1384 DECL_HANDLER(send_message
)
1386 struct message
*msg
;
1387 struct msg_queue
*send_queue
= get_current_queue();
1388 struct msg_queue
*recv_queue
= NULL
;
1389 struct thread
*thread
= NULL
;
1393 if (!(thread
= get_thread_from_id( req
->id
))) return;
1395 else if (req
->type
!= MSG_HARDWARE
)
1397 /* only hardware messages are allowed without destination thread */
1398 set_error( STATUS_INVALID_PARAMETER
);
1402 if (thread
&& !(recv_queue
= thread
->queue
))
1404 set_error( STATUS_INVALID_PARAMETER
);
1405 release_object( thread
);
1408 if (recv_queue
&& (req
->flags
& SEND_MSG_ABORT_IF_HUNG
) && is_queue_hung(recv_queue
))
1410 set_error( STATUS_TIMEOUT
);
1411 release_object( thread
);
1415 if ((msg
= mem_alloc( sizeof(*msg
) )))
1417 msg
->type
= req
->type
;
1418 msg
->win
= get_user_full_handle( req
->win
);
1419 msg
->msg
= req
->msg
;
1420 msg
->wparam
= req
->wparam
;
1421 msg
->lparam
= req
->lparam
;
1422 msg
->time
= req
->time
;
1425 msg
->info
= req
->info
;
1427 msg
->hook_proc
= NULL
;
1434 case MSG_OTHER_PROCESS
:
1435 msg
->data_size
= get_req_data_size();
1436 if (msg
->data_size
&& !(msg
->data
= memdup( get_req_data(), msg
->data_size
)))
1445 if (!(msg
->result
= alloc_message_result( send_queue
, recv_queue
, msg
,
1446 req
->timeout
, req
->callback
, req
->info
)))
1448 free_message( msg
);
1453 list_add_tail( &recv_queue
->msg_list
[SEND_MESSAGE
], &msg
->entry
);
1454 set_queue_bits( recv_queue
, QS_SENDMESSAGE
);
1457 /* needed for posted DDE messages */
1458 msg
->data_size
= get_req_data_size();
1459 if (msg
->data_size
&& !(msg
->data
= memdup( get_req_data(), msg
->data_size
)))
1464 list_add_tail( &recv_queue
->msg_list
[POST_MESSAGE
], &msg
->entry
);
1465 set_queue_bits( recv_queue
, QS_POSTMESSAGE
);
1468 queue_hardware_message( recv_queue
, msg
);
1470 case MSG_CALLBACK_RESULT
: /* cannot send this one */
1472 set_error( STATUS_INVALID_PARAMETER
);
1477 if (thread
) release_object( thread
);
1481 /* get a message from the current queue */
1482 DECL_HANDLER(get_message
)
1484 struct timer
*timer
;
1486 struct message
*first_hw_msg
= NULL
;
1487 struct msg_queue
*queue
= get_current_queue();
1488 user_handle_t get_win
= get_user_full_handle( req
->get_win
);
1491 gettimeofday( &queue
->last_get_msg
, NULL
);
1493 /* first of all release the hardware input lock if we own it */
1494 /* we'll grab it again if we find a hardware message */
1495 if (queue
->input
->msg_thread
== current
)
1497 first_hw_msg
= queue
->input
->msg
;
1498 release_hardware_message( current
, 0 );
1501 /* first check for sent messages */
1502 if ((ptr
= list_head( &queue
->msg_list
[SEND_MESSAGE
] )))
1504 struct message
*msg
= LIST_ENTRY( ptr
, struct message
, entry
);
1505 receive_message( queue
, msg
, reply
);
1508 if (req
->flags
& GET_MSG_SENT_ONLY
) goto done
; /* nothing else to check */
1510 /* clear changed bits so we can wait on them if we don't find a message */
1511 queue
->changed_bits
= 0;
1513 /* then check for posted messages */
1514 if (get_posted_message( queue
, get_win
, req
->get_first
, req
->get_last
, req
->flags
, reply
))
1517 /* then check for any raw hardware message */
1518 if (get_hardware_message( current
, first_hw_msg
, get_win
, reply
))
1521 /* now check for WM_PAINT */
1522 if (queue
->paint_count
&&
1523 (WM_PAINT
>= req
->get_first
) && (WM_PAINT
<= req
->get_last
) &&
1524 (reply
->win
= find_window_to_repaint( get_win
, current
)))
1526 reply
->type
= MSG_POSTED
;
1527 reply
->msg
= WM_PAINT
;
1532 reply
->time
= get_tick_count();
1537 /* now check for timer */
1538 if ((timer
= find_expired_timer( queue
, get_win
, req
->get_first
,
1539 req
->get_last
, (req
->flags
& GET_MSG_REMOVE
) )))
1541 reply
->type
= MSG_POSTED
;
1542 reply
->win
= timer
->win
;
1543 reply
->msg
= timer
->msg
;
1544 reply
->wparam
= timer
->id
;
1545 reply
->lparam
= timer
->lparam
;
1548 reply
->time
= get_tick_count();
1554 set_error( STATUS_PENDING
); /* FIXME */
1558 /* reply to a sent message */
1559 DECL_HANDLER(reply_message
)
1561 if (!current
->queue
)
1563 set_error( STATUS_ACCESS_DENIED
);
1566 if (req
->type
== MSG_HARDWARE
)
1568 struct thread_input
*input
= current
->queue
->input
;
1569 if (input
->msg_thread
== current
) release_hardware_message( current
, req
->remove
);
1570 else set_error( STATUS_ACCESS_DENIED
);
1572 else if (current
->queue
->recv_result
)
1573 reply_message( current
->queue
, req
->result
, 0, req
->remove
,
1574 get_req_data(), get_req_data_size() );
1578 /* retrieve the reply for the last message sent */
1579 DECL_HANDLER(get_message_reply
)
1581 struct message_result
*result
;
1583 struct msg_queue
*queue
= current
->queue
;
1587 set_error( STATUS_PENDING
);
1590 if (!(entry
= list_head( &queue
->send_result
))) return; /* no reply ready */
1592 result
= LIST_ENTRY( entry
, struct message_result
, sender_entry
);
1593 if (result
->replied
|| req
->cancel
)
1595 if (result
->replied
)
1597 reply
->result
= result
->result
;
1598 set_error( result
->error
);
1601 size_t data_len
= min( result
->data_size
, get_reply_max_size() );
1602 set_reply_data_ptr( result
->data
, data_len
);
1603 result
->data
= NULL
;
1604 result
->data_size
= 0;
1607 remove_result_from_sender( result
);
1609 entry
= list_head( &queue
->send_result
);
1610 if (!entry
) clear_queue_bits( queue
, QS_SMRESULT
);
1613 result
= LIST_ENTRY( entry
, struct message_result
, sender_entry
);
1614 if (!result
->replied
) clear_queue_bits( queue
, QS_SMRESULT
);
1618 else set_error( STATUS_ACCESS_DENIED
);
1622 /* set a window timer */
1623 DECL_HANDLER(set_win_timer
)
1625 struct timer
*timer
;
1626 struct msg_queue
*queue
;
1627 struct thread
*thread
= NULL
;
1628 user_handle_t win
= 0;
1629 unsigned int id
= req
->id
;
1633 if (!(win
= get_user_full_handle( req
->win
)) || !(thread
= get_window_thread( win
)))
1635 set_error( STATUS_INVALID_HANDLE
);
1638 if (thread
->process
!= current
->process
)
1640 release_object( thread
);
1641 set_error( STATUS_ACCESS_DENIED
);
1644 queue
= thread
->queue
;
1645 /* remove it if it existed already */
1646 if ((timer
= find_timer( queue
, win
, req
->msg
, id
))) free_timer( queue
, timer
);
1650 queue
= get_current_queue();
1651 /* find a free id for it */
1654 id
= queue
->next_timer_id
;
1655 if (++queue
->next_timer_id
>= 0x10000) queue
->next_timer_id
= 1;
1657 while (find_timer( queue
, 0, req
->msg
, id
));
1660 if ((timer
= set_timer( queue
, req
->rate
)))
1663 timer
->msg
= req
->msg
;
1665 timer
->lparam
= req
->lparam
;
1668 if (thread
) release_object( thread
);
1671 /* kill a window timer */
1672 DECL_HANDLER(kill_win_timer
)
1674 struct timer
*timer
;
1675 struct thread
*thread
;
1676 user_handle_t win
= 0;
1680 if (!(win
= get_user_full_handle( req
->win
)) || !(thread
= get_window_thread( win
)))
1682 set_error( STATUS_INVALID_HANDLE
);
1685 if (thread
->process
!= current
->process
)
1687 release_object( thread
);
1688 set_error( STATUS_ACCESS_DENIED
);
1692 else thread
= (struct thread
*)grab_object( current
);
1694 if (thread
->queue
&& (timer
= find_timer( thread
->queue
, win
, req
->msg
, req
->id
)))
1695 free_timer( thread
->queue
, timer
);
1697 set_error( STATUS_INVALID_PARAMETER
);
1699 release_object( thread
);
1703 /* attach (or detach) thread inputs */
1704 DECL_HANDLER(attach_thread_input
)
1706 struct thread
*thread_from
= get_thread_from_id( req
->tid_from
);
1707 struct thread
*thread_to
= get_thread_from_id( req
->tid_to
);
1709 if (!thread_from
|| !thread_to
)
1711 if (thread_from
) release_object( thread_from
);
1712 if (thread_to
) release_object( thread_to
);
1715 if (thread_from
!= thread_to
)
1717 if (req
->attach
) attach_thread_input( thread_from
, thread_to
);
1718 else detach_thread_input( thread_from
, thread_to
);
1720 else set_error( STATUS_ACCESS_DENIED
);
1721 release_object( thread_from
);
1722 release_object( thread_to
);
1726 /* get thread input data */
1727 DECL_HANDLER(get_thread_input
)
1729 struct thread
*thread
= NULL
;
1730 struct thread_input
*input
;
1734 if (!(thread
= get_thread_from_id( req
->tid
))) return;
1735 input
= thread
->queue
? thread
->queue
->input
: NULL
;
1737 else input
= foreground_input
; /* get the foreground thread info */
1741 reply
->focus
= input
->focus
;
1742 reply
->capture
= input
->capture
;
1743 reply
->active
= input
->active
;
1744 reply
->menu_owner
= input
->menu_owner
;
1745 reply
->move_size
= input
->move_size
;
1746 reply
->caret
= input
->caret
;
1747 reply
->rect
= input
->caret_rect
;
1754 reply
->menu_owner
= 0;
1755 reply
->move_size
= 0;
1757 reply
->rect
.left
= reply
->rect
.top
= reply
->rect
.right
= reply
->rect
.bottom
= 0;
1759 /* foreground window is active window of foreground thread */
1760 reply
->foreground
= foreground_input
? foreground_input
->active
: 0;
1761 if (thread
) release_object( thread
);
1765 /* retrieve queue keyboard state for a given thread */
1766 DECL_HANDLER(get_key_state
)
1768 struct thread
*thread
;
1769 struct thread_input
*input
;
1771 if (!(thread
= get_thread_from_id( req
->tid
))) return;
1772 input
= thread
->queue
? thread
->queue
->input
: NULL
;
1775 if (req
->key
>= 0) reply
->state
= input
->keystate
[req
->key
& 0xff];
1776 set_reply_data( input
->keystate
, min( get_reply_max_size(), sizeof(input
->keystate
) ));
1778 release_object( thread
);
1782 /* set queue keyboard state for a given thread */
1783 DECL_HANDLER(set_key_state
)
1785 struct thread
*thread
= NULL
;
1786 struct thread_input
*input
;
1788 if (!(thread
= get_thread_from_id( req
->tid
))) return;
1789 input
= thread
->queue
? thread
->queue
->input
: NULL
;
1792 size_t size
= min( sizeof(input
->keystate
), get_req_data_size() );
1793 if (size
) memcpy( input
->keystate
, get_req_data(), size
);
1795 release_object( thread
);
1799 /* set the system foreground window */
1800 DECL_HANDLER(set_foreground_window
)
1802 struct msg_queue
*queue
= get_current_queue();
1804 reply
->previous
= foreground_input
? foreground_input
->active
: 0;
1805 reply
->send_msg_old
= (reply
->previous
&& foreground_input
!= queue
->input
);
1806 reply
->send_msg_new
= FALSE
;
1810 struct thread
*thread
;
1812 if (is_top_level_window( req
->handle
) &&
1813 ((thread
= get_window_thread( req
->handle
))))
1815 foreground_input
= thread
->queue
->input
;
1816 reply
->send_msg_new
= (foreground_input
!= queue
->input
);
1817 release_object( thread
);
1819 else set_error( STATUS_INVALID_HANDLE
);
1821 else foreground_input
= NULL
;
1825 /* set the current thread focus window */
1826 DECL_HANDLER(set_focus_window
)
1828 struct msg_queue
*queue
= get_current_queue();
1830 reply
->previous
= 0;
1831 if (queue
&& check_queue_input_window( queue
, req
->handle
))
1833 reply
->previous
= queue
->input
->focus
;
1834 queue
->input
->focus
= get_user_full_handle( req
->handle
);
1839 /* set the current thread active window */
1840 DECL_HANDLER(set_active_window
)
1842 struct msg_queue
*queue
= get_current_queue();
1844 reply
->previous
= 0;
1845 if (queue
&& check_queue_input_window( queue
, req
->handle
))
1847 if (!req
->handle
|| make_window_active( req
->handle
))
1849 reply
->previous
= queue
->input
->active
;
1850 queue
->input
->active
= get_user_full_handle( req
->handle
);
1852 else set_error( STATUS_INVALID_HANDLE
);
1857 /* set the current thread capture window */
1858 DECL_HANDLER(set_capture_window
)
1860 struct msg_queue
*queue
= get_current_queue();
1862 reply
->previous
= reply
->full_handle
= 0;
1863 if (queue
&& check_queue_input_window( queue
, req
->handle
))
1865 struct thread_input
*input
= queue
->input
;
1867 reply
->previous
= input
->capture
;
1868 input
->capture
= get_user_full_handle( req
->handle
);
1869 input
->menu_owner
= (req
->flags
& CAPTURE_MENU
) ? input
->capture
: 0;
1870 input
->move_size
= (req
->flags
& CAPTURE_MOVESIZE
) ? input
->capture
: 0;
1871 reply
->full_handle
= input
->capture
;
1876 /* Set the current thread caret window */
1877 DECL_HANDLER(set_caret_window
)
1879 struct msg_queue
*queue
= get_current_queue();
1881 reply
->previous
= 0;
1882 if (queue
&& check_queue_input_window( queue
, req
->handle
))
1884 struct thread_input
*input
= queue
->input
;
1886 reply
->previous
= input
->caret
;
1887 reply
->old_rect
= input
->caret_rect
;
1888 reply
->old_hide
= input
->caret_hide
;
1889 reply
->old_state
= input
->caret_state
;
1891 set_caret_window( input
, get_user_full_handle(req
->handle
) );
1892 input
->caret_rect
.right
= input
->caret_rect
.left
+ req
->width
;
1893 input
->caret_rect
.bottom
= input
->caret_rect
.top
+ req
->height
;
1898 /* Set the current thread caret information */
1899 DECL_HANDLER(set_caret_info
)
1901 struct msg_queue
*queue
= get_current_queue();
1902 struct thread_input
*input
;
1905 input
= queue
->input
;
1906 reply
->full_handle
= input
->caret
;
1907 reply
->old_rect
= input
->caret_rect
;
1908 reply
->old_hide
= input
->caret_hide
;
1909 reply
->old_state
= input
->caret_state
;
1911 if (req
->handle
&& get_user_full_handle(req
->handle
) != input
->caret
)
1913 set_error( STATUS_ACCESS_DENIED
);
1916 if (req
->flags
& SET_CARET_POS
)
1918 input
->caret_rect
.right
+= req
->x
- input
->caret_rect
.left
;
1919 input
->caret_rect
.bottom
+= req
->y
- input
->caret_rect
.top
;
1920 input
->caret_rect
.left
= req
->x
;
1921 input
->caret_rect
.top
= req
->y
;
1923 if (req
->flags
& SET_CARET_HIDE
)
1925 input
->caret_hide
+= req
->hide
;
1926 if (input
->caret_hide
< 0) input
->caret_hide
= 0;
1928 if (req
->flags
& SET_CARET_STATE
)
1930 if (req
->state
== -1) input
->caret_state
= !input
->caret_state
;
1931 else input
->caret_state
= !!req
->state
;