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"
30 #define WIN32_NO_STATUS
44 #define WM_NCMOUSEFIRST WM_NCMOUSEMOVE
45 #define WM_NCMOUSELAST (WM_NCMOUSEFIRST+(WM_MOUSELAST-WM_MOUSEFIRST))
47 enum message_kind
{ SEND_MESSAGE
, POST_MESSAGE
};
48 #define NB_MSG_KINDS (POST_MESSAGE+1)
53 struct list sender_entry
; /* entry in sender list */
54 struct message
*msg
; /* message the result is for */
55 struct message_result
*recv_next
; /* next in receiver list */
56 struct msg_queue
*sender
; /* sender queue */
57 struct msg_queue
*receiver
; /* receiver queue */
58 int replied
; /* has it been replied to? */
59 unsigned int result
; /* reply result */
60 unsigned int error
; /* error code to pass back to sender */
61 struct message
*callback_msg
; /* message to queue for callback */
62 void *data
; /* message reply data */
63 unsigned int data_size
; /* size of message reply data */
64 struct timeout_user
*timeout
; /* result timeout */
69 struct list entry
; /* entry in message list */
70 enum message_type type
; /* message type */
71 user_handle_t win
; /* window handle */
72 unsigned int msg
; /* message code */
73 unsigned int wparam
; /* parameters */
74 unsigned int lparam
; /* parameters */
75 int x
; /* x position */
76 int y
; /* y position */
77 unsigned int time
; /* message time */
78 unsigned int info
; /* extra info */
79 user_handle_t hook
; /* winevent hook handle */
80 void *hook_proc
; /* winevent hook proc address */
81 void *data
; /* message data for sent messages */
82 unsigned int data_size
; /* size of message data */
83 unsigned int unique_id
; /* unique id for nested hw message waits */
84 struct message_result
*result
; /* result in sender queue */
89 struct list entry
; /* entry in timer list */
90 struct timeval when
; /* next expiration */
91 unsigned int rate
; /* timer rate in ms */
92 user_handle_t win
; /* window handle */
93 unsigned int msg
; /* message to post */
94 unsigned int id
; /* timer id */
95 unsigned int lparam
; /* lparam for message */
100 struct object obj
; /* object header */
101 struct desktop
*desktop
; /* desktop that this thread input belongs to */
102 user_handle_t focus
; /* focus window */
103 user_handle_t capture
; /* capture window */
104 user_handle_t active
; /* active window */
105 user_handle_t menu_owner
; /* current menu owner window */
106 user_handle_t move_size
; /* current moving/resizing window */
107 user_handle_t caret
; /* caret window */
108 rectangle_t caret_rect
; /* caret rectangle */
109 int caret_hide
; /* caret hide count */
110 int caret_state
; /* caret on/off state */
111 struct list msg_list
; /* list of hardware messages */
112 unsigned char keystate
[256]; /* state of each key */
117 struct object obj
; /* object header */
118 unsigned int wake_bits
; /* wakeup bits */
119 unsigned int wake_mask
; /* wakeup mask */
120 unsigned int changed_bits
; /* changed wakeup bits */
121 unsigned int changed_mask
; /* changed wakeup mask */
122 int paint_count
; /* pending paint messages count */
123 struct list msg_list
[NB_MSG_KINDS
]; /* lists of messages */
124 struct list send_result
; /* stack of sent messages waiting for result */
125 struct list callback_result
; /* list of callback messages waiting for result */
126 struct message_result
*recv_result
; /* stack of received messages waiting for result */
127 struct list pending_timers
; /* list of pending timers */
128 struct list expired_timers
; /* list of expired timers */
129 unsigned int next_timer_id
; /* id for the next timer with a 0 window */
130 struct timeout_user
*timeout
; /* timeout for next timer to expire */
131 struct thread_input
*input
; /* thread input descriptor */
132 struct hook_table
*hooks
; /* hook table */
133 struct timeval last_get_msg
; /* time of last get message call */
136 static void msg_queue_dump( struct object
*obj
, int verbose
);
137 static int msg_queue_add_queue( struct object
*obj
, struct wait_queue_entry
*entry
);
138 static void msg_queue_remove_queue( struct object
*obj
, struct wait_queue_entry
*entry
);
139 static int msg_queue_signaled( struct object
*obj
, struct thread
*thread
);
140 static int msg_queue_satisfied( struct object
*obj
, struct thread
*thread
);
141 static void msg_queue_destroy( struct object
*obj
);
142 static void thread_input_dump( struct object
*obj
, int verbose
);
143 static void thread_input_destroy( struct object
*obj
);
144 static void timer_callback( void *private );
146 static const struct object_ops msg_queue_ops
=
148 sizeof(struct msg_queue
), /* size */
149 msg_queue_dump
, /* dump */
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_lookup_name
, /* lookup_name */
157 no_close_handle
, /* close_handle */
158 msg_queue_destroy
/* destroy */
162 static const struct object_ops thread_input_ops
=
164 sizeof(struct thread_input
), /* size */
165 thread_input_dump
, /* dump */
166 no_add_queue
, /* add_queue */
167 NULL
, /* remove_queue */
169 NULL
, /* satisfied */
170 no_signal
, /* signal */
171 no_get_fd
, /* get_fd */
172 no_lookup_name
, /* lookup_name */
173 no_close_handle
, /* close_handle */
174 thread_input_destroy
/* destroy */
177 /* pointer to input structure of foreground thread */
178 static struct thread_input
*foreground_input
;
179 static unsigned int last_input_time
;
182 /* set the caret window in a given thread input */
183 static void set_caret_window( struct thread_input
*input
, user_handle_t win
)
185 if (!win
|| win
!= input
->caret
)
187 input
->caret_rect
.left
= 0;
188 input
->caret_rect
.top
= 0;
189 input
->caret_rect
.right
= 0;
190 input
->caret_rect
.bottom
= 0;
193 input
->caret_hide
= 1;
194 input
->caret_state
= 0;
197 /* create a thread input object */
198 static struct thread_input
*create_thread_input( struct thread
*thread
)
200 struct thread_input
*input
;
202 if ((input
= alloc_object( &thread_input_ops
)))
204 if (!(input
->desktop
= get_thread_desktop( thread
, 0 /* FIXME: access rights */ )))
212 input
->menu_owner
= 0;
213 input
->move_size
= 0;
214 list_init( &input
->msg_list
);
215 set_caret_window( input
, 0 );
216 memset( input
->keystate
, 0, sizeof(input
->keystate
) );
221 /* release the thread input data of a given thread */
222 static inline void release_thread_input( struct thread
*thread
)
224 struct thread_input
*input
= thread
->queue
->input
;
227 release_object( input
);
228 thread
->queue
->input
= NULL
;
231 /* create a message queue object */
232 static struct msg_queue
*create_msg_queue( struct thread
*thread
, struct thread_input
*input
)
234 struct msg_queue
*queue
;
237 if (!input
&& !(input
= create_thread_input( thread
))) return NULL
;
238 if ((queue
= alloc_object( &msg_queue_ops
)))
240 queue
->wake_bits
= 0;
241 queue
->wake_mask
= 0;
242 queue
->changed_bits
= 0;
243 queue
->changed_mask
= 0;
244 queue
->paint_count
= 0;
245 queue
->recv_result
= NULL
;
246 queue
->next_timer_id
= 1;
247 queue
->timeout
= NULL
;
248 queue
->input
= (struct thread_input
*)grab_object( input
);
250 gettimeofday( &queue
->last_get_msg
, NULL
);
251 list_init( &queue
->send_result
);
252 list_init( &queue
->callback_result
);
253 list_init( &queue
->pending_timers
);
254 list_init( &queue
->expired_timers
);
255 for (i
= 0; i
< NB_MSG_KINDS
; i
++) list_init( &queue
->msg_list
[i
] );
257 thread
->queue
= queue
;
258 if (!thread
->process
->queue
)
259 thread
->process
->queue
= (struct msg_queue
*)grab_object( queue
);
261 release_object( input
);
265 /* free the message queue of a thread at thread exit */
266 void free_msg_queue( struct thread
*thread
)
268 struct process
*process
= thread
->process
;
270 remove_thread_hooks( thread
);
271 if (!thread
->queue
) return;
272 if (process
->queue
== thread
->queue
) /* is it the process main queue? */
274 release_object( process
->queue
);
275 process
->queue
= NULL
;
276 if (process
->idle_event
)
278 set_event( process
->idle_event
);
279 release_object( process
->idle_event
);
280 process
->idle_event
= NULL
;
283 release_object( thread
->queue
);
284 thread
->queue
= NULL
;
287 /* get the hook table for a given thread */
288 struct hook_table
*get_queue_hooks( struct thread
*thread
)
290 if (!thread
->queue
) return NULL
;
291 return thread
->queue
->hooks
;
294 /* set the hook table for a given thread, allocating the queue if needed */
295 void set_queue_hooks( struct thread
*thread
, struct hook_table
*hooks
)
297 struct msg_queue
*queue
= thread
->queue
;
298 if (!queue
&& !(queue
= create_msg_queue( thread
, NULL
))) return;
299 if (queue
->hooks
) release_object( queue
->hooks
);
300 queue
->hooks
= hooks
;
303 /* check the queue status */
304 inline static int is_signaled( struct msg_queue
*queue
)
306 return ((queue
->wake_bits
& queue
->wake_mask
) || (queue
->changed_bits
& queue
->changed_mask
));
309 /* set some queue bits */
310 inline static void set_queue_bits( struct msg_queue
*queue
, unsigned int bits
)
312 queue
->wake_bits
|= bits
;
313 queue
->changed_bits
|= bits
;
314 if (is_signaled( queue
)) wake_up( &queue
->obj
, 0 );
317 /* clear some queue bits */
318 inline static void clear_queue_bits( struct msg_queue
*queue
, unsigned int bits
)
320 queue
->wake_bits
&= ~bits
;
321 queue
->changed_bits
&= ~bits
;
324 /* check whether msg is a keyboard message */
325 inline static int is_keyboard_msg( struct message
*msg
)
327 return (msg
->msg
>= WM_KEYFIRST
&& msg
->msg
<= WM_KEYLAST
);
330 /* check if message is matched by the filter */
331 inline static int check_msg_filter( unsigned int msg
, unsigned int first
, unsigned int last
)
333 return (msg
>= first
&& msg
<= last
);
336 /* check whether a message filter contains at least one potential hardware message */
337 inline static int filter_contains_hw_range( unsigned int first
, unsigned int last
)
339 /* hardware message ranges are (in numerical order):
340 * WM_NCMOUSEFIRST .. WM_NCMOUSELAST
341 * WM_KEYFIRST .. WM_KEYLAST
342 * WM_MOUSEFIRST .. WM_MOUSELAST
344 if (last
< WM_NCMOUSEFIRST
) return 0;
345 if (first
> WM_NCMOUSELAST
&& last
< WM_KEYFIRST
) return 0;
346 if (first
> WM_KEYLAST
&& last
< WM_MOUSEFIRST
) return 0;
347 if (first
> WM_MOUSELAST
) return 0;
351 /* get the QS_* bit corresponding to a given hardware message */
352 inline static int get_hardware_msg_bit( struct message
*msg
)
354 if (msg
->msg
== WM_MOUSEMOVE
|| msg
->msg
== WM_NCMOUSEMOVE
) return QS_MOUSEMOVE
;
355 if (is_keyboard_msg( msg
)) return QS_KEY
;
356 return QS_MOUSEBUTTON
;
359 /* get the current thread queue, creating it if needed */
360 inline static struct msg_queue
*get_current_queue(void)
362 struct msg_queue
*queue
= current
->queue
;
363 if (!queue
) queue
= create_msg_queue( current
, NULL
);
367 /* get a (pseudo-)unique id to tag hardware messages */
368 inline static unsigned int get_unique_id(void)
370 static unsigned int id
;
371 if (!++id
) id
= 1; /* avoid an id of 0 */
375 /* try to merge a message with the last in the list; return 1 if successful */
376 static int merge_message( struct thread_input
*input
, const struct message
*msg
)
378 struct message
*prev
;
379 struct list
*ptr
= list_tail( &input
->msg_list
);
382 prev
= LIST_ENTRY( ptr
, struct message
, entry
);
383 if (prev
->unique_id
) return 0;
384 if (prev
->result
) return 0;
385 if (prev
->win
!= msg
->win
) return 0;
386 if (prev
->msg
!= msg
->msg
) return 0;
387 if (prev
->type
!= msg
->type
) return 0;
388 /* now we can merge it */
389 prev
->wparam
= msg
->wparam
;
390 prev
->lparam
= msg
->lparam
;
393 prev
->time
= msg
->time
;
394 prev
->info
= msg
->info
;
398 /* free a result structure */
399 static void free_result( struct message_result
*result
)
401 if (result
->timeout
) remove_timeout_user( result
->timeout
);
402 if (result
->data
) free( result
->data
);
403 if (result
->callback_msg
) free( result
->callback_msg
);
407 /* remove the result from the sender list it is on */
408 static inline void remove_result_from_sender( struct message_result
*result
)
410 assert( result
->sender
);
412 list_remove( &result
->sender_entry
);
413 result
->sender
= NULL
;
414 if (!result
->receiver
) free_result( result
);
417 /* store the message result in the appropriate structure */
418 static void store_message_result( struct message_result
*res
, unsigned int result
,
421 res
->result
= result
;
426 remove_timeout_user( res
->timeout
);
431 if (res
->callback_msg
)
433 /* queue the callback message in the sender queue */
434 res
->callback_msg
->lparam
= result
;
435 list_add_tail( &res
->sender
->msg_list
[SEND_MESSAGE
], &res
->callback_msg
->entry
);
436 set_queue_bits( res
->sender
, QS_SENDMESSAGE
);
437 res
->callback_msg
= NULL
;
438 remove_result_from_sender( res
);
442 /* wake sender queue if waiting on this result */
443 if (list_head(&res
->sender
->send_result
) == &res
->sender_entry
)
444 set_queue_bits( res
->sender
, QS_SMRESULT
);
450 /* free a message when deleting a queue or window */
451 static void free_message( struct message
*msg
)
453 struct message_result
*result
= msg
->result
;
459 result
->receiver
= NULL
;
460 store_message_result( result
, 0, STATUS_ACCESS_DENIED
/*FIXME*/ );
462 else free_result( result
);
464 if (msg
->data
) free( msg
->data
);
468 /* remove (and free) a message from a message list */
469 static void remove_queue_message( struct msg_queue
*queue
, struct message
*msg
,
470 enum message_kind kind
)
472 list_remove( &msg
->entry
);
476 if (list_empty( &queue
->msg_list
[kind
] )) clear_queue_bits( queue
, QS_SENDMESSAGE
);
479 if (list_empty( &queue
->msg_list
[kind
] )) clear_queue_bits( queue
, QS_POSTMESSAGE
|QS_ALLPOSTMESSAGE
);
485 /* message timed out without getting a reply */
486 static void result_timeout( void *private )
488 struct message_result
*result
= private;
490 assert( !result
->replied
);
492 result
->timeout
= NULL
;
494 if (result
->msg
) /* not received yet */
496 struct message
*msg
= result
->msg
;
500 remove_queue_message( result
->receiver
, msg
, SEND_MESSAGE
);
501 result
->receiver
= NULL
;
504 free_result( result
);
509 store_message_result( result
, 0, STATUS_TIMEOUT
);
512 /* allocate and fill a message result structure */
513 static struct message_result
*alloc_message_result( struct msg_queue
*send_queue
,
514 struct msg_queue
*recv_queue
,
515 struct message
*msg
, int timeout
,
516 void *callback
, unsigned int callback_data
)
518 struct message_result
*result
= mem_alloc( sizeof(*result
) );
522 result
->sender
= send_queue
;
523 result
->receiver
= recv_queue
;
526 result
->data_size
= 0;
527 result
->timeout
= NULL
;
529 if (msg
->type
== MSG_CALLBACK
)
531 struct message
*callback_msg
= mem_alloc( sizeof(*callback_msg
) );
537 callback_msg
->type
= MSG_CALLBACK_RESULT
;
538 callback_msg
->win
= msg
->win
;
539 callback_msg
->msg
= msg
->msg
;
540 callback_msg
->wparam
= (unsigned int)callback
;
541 callback_msg
->lparam
= 0;
542 callback_msg
->time
= get_tick_count();
545 callback_msg
->info
= callback_data
;
546 callback_msg
->hook
= 0;
547 callback_msg
->hook_proc
= NULL
;
548 callback_msg
->result
= NULL
;
549 callback_msg
->data
= NULL
;
550 callback_msg
->data_size
= 0;
552 result
->callback_msg
= callback_msg
;
553 list_add_head( &send_queue
->callback_result
, &result
->sender_entry
);
557 result
->callback_msg
= NULL
;
558 list_add_head( &send_queue
->send_result
, &result
->sender_entry
);
564 gettimeofday( &when
, NULL
);
565 add_timeout( &when
, timeout
);
566 result
->timeout
= add_timeout_user( &when
, result_timeout
, result
);
572 /* receive a message, removing it from the sent queue */
573 static void receive_message( struct msg_queue
*queue
, struct message
*msg
,
574 struct get_message_reply
*reply
)
576 struct message_result
*result
= msg
->result
;
578 reply
->total
= msg
->data_size
;
579 if (msg
->data_size
> get_reply_max_size())
581 set_error( STATUS_BUFFER_OVERFLOW
);
584 reply
->type
= msg
->type
;
585 reply
->win
= msg
->win
;
586 reply
->msg
= msg
->msg
;
587 reply
->wparam
= msg
->wparam
;
588 reply
->lparam
= msg
->lparam
;
591 reply
->time
= msg
->time
;
592 reply
->info
= msg
->info
;
593 reply
->hook
= msg
->hook
;
594 reply
->hook_proc
= msg
->hook_proc
;
596 if (msg
->data
) set_reply_data_ptr( msg
->data
, msg
->data_size
);
598 list_remove( &msg
->entry
);
599 /* put the result on the receiver result stack */
603 result
->recv_next
= queue
->recv_result
;
604 queue
->recv_result
= result
;
607 if (list_empty( &queue
->msg_list
[SEND_MESSAGE
] )) clear_queue_bits( queue
, QS_SENDMESSAGE
);
610 /* set the result of the current received message */
611 static void reply_message( struct msg_queue
*queue
, unsigned int result
,
612 unsigned int error
, int remove
, const void *data
, size_t len
)
614 struct message_result
*res
= queue
->recv_result
;
618 queue
->recv_result
= res
->recv_next
;
619 res
->receiver
= NULL
;
620 if (!res
->sender
) /* no one waiting for it */
628 if (len
&& (res
->data
= memdup( data
, len
))) res
->data_size
= len
;
629 store_message_result( res
, result
, error
);
633 /* retrieve a posted message */
634 static int get_posted_message( struct msg_queue
*queue
, user_handle_t win
,
635 unsigned int first
, unsigned int last
, unsigned int flags
,
636 struct get_message_reply
*reply
)
640 /* check against the filters */
641 LIST_FOR_EACH_ENTRY( msg
, &queue
->msg_list
[POST_MESSAGE
], struct message
, entry
)
643 if (msg
->msg
== WM_QUIT
) goto found
; /* WM_QUIT is never filtered */
644 if (win
&& msg
->win
&& msg
->win
!= win
&& !is_child_window( win
, msg
->win
)) continue;
645 if (!check_msg_filter( msg
->msg
, first
, last
)) continue;
646 goto found
; /* found one */
650 /* return it to the app */
652 reply
->total
= msg
->data_size
;
653 if (msg
->data_size
> get_reply_max_size())
655 set_error( STATUS_BUFFER_OVERFLOW
);
658 reply
->type
= msg
->type
;
659 reply
->win
= msg
->win
;
660 reply
->msg
= msg
->msg
;
661 reply
->wparam
= msg
->wparam
;
662 reply
->lparam
= msg
->lparam
;
665 reply
->time
= msg
->time
;
666 reply
->info
= msg
->info
;
668 if (flags
& GET_MSG_REMOVE
)
672 set_reply_data_ptr( msg
->data
, msg
->data_size
);
676 remove_queue_message( queue
, msg
, POST_MESSAGE
);
678 else if (msg
->data
) set_reply_data( msg
->data
, msg
->data_size
);
683 /* empty a message list and free all the messages */
684 static void empty_msg_list( struct list
*list
)
688 while ((ptr
= list_head( list
)) != NULL
)
690 struct message
*msg
= LIST_ENTRY( ptr
, struct message
, entry
);
691 list_remove( &msg
->entry
);
696 /* cleanup all pending results when deleting a queue */
697 static void cleanup_results( struct msg_queue
*queue
)
701 while ((entry
= list_head( &queue
->send_result
)) != NULL
)
703 remove_result_from_sender( LIST_ENTRY( entry
, struct message_result
, sender_entry
) );
706 while ((entry
= list_head( &queue
->callback_result
)) != NULL
)
708 remove_result_from_sender( LIST_ENTRY( entry
, struct message_result
, sender_entry
) );
711 while (queue
->recv_result
)
712 reply_message( queue
, 0, STATUS_ACCESS_DENIED
/*FIXME*/, 1, NULL
, 0 );
715 /* check if the thread owning the queue is hung (not checking for messages) */
716 static int is_queue_hung( struct msg_queue
*queue
)
719 struct wait_queue_entry
*entry
;
721 gettimeofday( &now
, NULL
);
722 if (now
.tv_sec
- queue
->last_get_msg
.tv_sec
<= 5)
723 return 0; /* less than 5 seconds since last get message -> not hung */
725 LIST_FOR_EACH_ENTRY( entry
, &queue
->obj
.wait_queue
, struct wait_queue_entry
, entry
)
727 if (entry
->thread
->queue
== queue
)
728 return 0; /* thread is waiting on queue -> not hung */
733 static int msg_queue_add_queue( struct object
*obj
, struct wait_queue_entry
*entry
)
735 struct msg_queue
*queue
= (struct msg_queue
*)obj
;
736 struct process
*process
= entry
->thread
->process
;
738 /* a thread can only wait on its own queue */
739 if (entry
->thread
->queue
!= queue
)
741 set_error( STATUS_ACCESS_DENIED
);
744 /* if waiting on the main process queue, set the idle event */
745 if (process
->queue
== queue
)
747 if (process
->idle_event
) set_event( process
->idle_event
);
749 add_queue( obj
, entry
);
753 static void msg_queue_remove_queue(struct object
*obj
, struct wait_queue_entry
*entry
)
755 struct msg_queue
*queue
= (struct msg_queue
*)obj
;
756 struct process
*process
= entry
->thread
->process
;
758 remove_queue( obj
, entry
);
760 assert( entry
->thread
->queue
== queue
);
762 /* if waiting on the main process queue, reset the idle event */
763 if (process
->queue
== queue
)
765 if (process
->idle_event
) reset_event( process
->idle_event
);
769 static void msg_queue_dump( struct object
*obj
, int verbose
)
771 struct msg_queue
*queue
= (struct msg_queue
*)obj
;
772 fprintf( stderr
, "Msg queue bits=%x mask=%x\n",
773 queue
->wake_bits
, queue
->wake_mask
);
776 static int msg_queue_signaled( struct object
*obj
, struct thread
*thread
)
778 struct msg_queue
*queue
= (struct msg_queue
*)obj
;
779 return is_signaled( queue
);
782 static int msg_queue_satisfied( struct object
*obj
, struct thread
*thread
)
784 struct msg_queue
*queue
= (struct msg_queue
*)obj
;
785 queue
->wake_mask
= 0;
786 queue
->changed_mask
= 0;
787 return 0; /* Not abandoned */
790 static void msg_queue_destroy( struct object
*obj
)
792 struct msg_queue
*queue
= (struct msg_queue
*)obj
;
796 cleanup_results( queue
);
797 for (i
= 0; i
< NB_MSG_KINDS
; i
++) empty_msg_list( &queue
->msg_list
[i
] );
799 while ((ptr
= list_head( &queue
->pending_timers
)))
801 struct timer
*timer
= LIST_ENTRY( ptr
, struct timer
, entry
);
802 list_remove( &timer
->entry
);
805 while ((ptr
= list_head( &queue
->expired_timers
)))
807 struct timer
*timer
= LIST_ENTRY( ptr
, struct timer
, entry
);
808 list_remove( &timer
->entry
);
811 if (queue
->timeout
) remove_timeout_user( queue
->timeout
);
812 if (queue
->input
) release_object( queue
->input
);
813 if (queue
->hooks
) release_object( queue
->hooks
);
816 static void thread_input_dump( struct object
*obj
, int verbose
)
818 struct thread_input
*input
= (struct thread_input
*)obj
;
819 fprintf( stderr
, "Thread input focus=%p capture=%p active=%p\n",
820 input
->focus
, input
->capture
, input
->active
);
823 static void thread_input_destroy( struct object
*obj
)
825 struct thread_input
*input
= (struct thread_input
*)obj
;
827 if (foreground_input
== input
) foreground_input
= NULL
;
828 empty_msg_list( &input
->msg_list
);
829 release_object( input
->desktop
);
832 /* fix the thread input data when a window is destroyed */
833 inline static void thread_input_cleanup_window( struct msg_queue
*queue
, user_handle_t window
)
835 struct thread_input
*input
= queue
->input
;
837 if (window
== input
->focus
) input
->focus
= 0;
838 if (window
== input
->capture
) input
->capture
= 0;
839 if (window
== input
->active
) input
->active
= 0;
840 if (window
== input
->menu_owner
) input
->menu_owner
= 0;
841 if (window
== input
->move_size
) input
->move_size
= 0;
842 if (window
== input
->caret
) set_caret_window( input
, 0 );
845 /* check if the specified window can be set in the input data of a given queue */
846 static int check_queue_input_window( struct msg_queue
*queue
, user_handle_t window
)
848 struct thread
*thread
;
851 if (!window
) return 1; /* we can always clear the data */
853 if ((thread
= get_window_thread( window
)))
855 ret
= (queue
->input
== thread
->queue
->input
);
856 if (!ret
) set_error( STATUS_ACCESS_DENIED
);
857 release_object( thread
);
859 else set_error( STATUS_INVALID_HANDLE
);
864 /* make sure the specified thread has a queue */
865 int init_thread_queue( struct thread
*thread
)
867 if (thread
->queue
) return 1;
868 return (create_msg_queue( thread
, NULL
) != NULL
);
871 /* attach two thread input data structures */
872 int attach_thread_input( struct thread
*thread_from
, struct thread
*thread_to
)
874 struct desktop
*desktop
;
875 struct thread_input
*input
;
877 if (!thread_to
->queue
&& !(thread_to
->queue
= create_msg_queue( thread_to
, NULL
))) return 0;
878 if (!(desktop
= get_thread_desktop( thread_from
, 0 ))) return 0;
879 input
= (struct thread_input
*)grab_object( thread_to
->queue
->input
);
880 if (input
->desktop
!= desktop
)
882 set_error( STATUS_ACCESS_DENIED
);
883 release_object( input
);
884 release_object( desktop
);
887 release_object( desktop
);
889 if (thread_from
->queue
)
891 release_thread_input( thread_from
);
892 thread_from
->queue
->input
= input
;
896 if (!(thread_from
->queue
= create_msg_queue( thread_from
, input
))) return 0;
898 memset( input
->keystate
, 0, sizeof(input
->keystate
) );
902 /* detach two thread input data structures */
903 void detach_thread_input( struct thread
*thread_from
)
905 struct thread_input
*input
;
907 if ((input
= create_thread_input( thread_from
)))
909 release_thread_input( thread_from
);
910 thread_from
->queue
->input
= input
;
915 /* set the next timer to expire */
916 static void set_next_timer( struct msg_queue
*queue
)
922 remove_timeout_user( queue
->timeout
);
923 queue
->timeout
= NULL
;
925 if ((ptr
= list_head( &queue
->pending_timers
)))
927 struct timer
*timer
= LIST_ENTRY( ptr
, struct timer
, entry
);
928 queue
->timeout
= add_timeout_user( &timer
->when
, timer_callback
, queue
);
930 /* set/clear QS_TIMER bit */
931 if (list_empty( &queue
->expired_timers
))
932 clear_queue_bits( queue
, QS_TIMER
);
934 set_queue_bits( queue
, QS_TIMER
);
937 /* find a timer from its window and id */
938 static struct timer
*find_timer( struct msg_queue
*queue
, user_handle_t win
,
939 unsigned int msg
, unsigned int id
)
943 /* we need to search both lists */
945 LIST_FOR_EACH( ptr
, &queue
->pending_timers
)
947 struct timer
*timer
= LIST_ENTRY( ptr
, struct timer
, entry
);
948 if (timer
->win
== win
&& timer
->msg
== msg
&& timer
->id
== id
) return timer
;
950 LIST_FOR_EACH( ptr
, &queue
->expired_timers
)
952 struct timer
*timer
= LIST_ENTRY( ptr
, struct timer
, entry
);
953 if (timer
->win
== win
&& timer
->msg
== msg
&& timer
->id
== id
) return timer
;
958 /* callback for the next timer expiration */
959 static void timer_callback( void *private )
961 struct msg_queue
*queue
= private;
964 queue
->timeout
= NULL
;
965 /* move on to the next timer */
966 ptr
= list_head( &queue
->pending_timers
);
968 list_add_tail( &queue
->expired_timers
, ptr
);
969 set_next_timer( queue
);
972 /* link a timer at its rightful place in the queue list */
973 static void link_timer( struct msg_queue
*queue
, struct timer
*timer
)
977 for (ptr
= queue
->pending_timers
.next
; ptr
!= &queue
->pending_timers
; ptr
= ptr
->next
)
979 struct timer
*t
= LIST_ENTRY( ptr
, struct timer
, entry
);
980 if (!time_before( &t
->when
, &timer
->when
)) break;
982 list_add_before( ptr
, &timer
->entry
);
985 /* remove a timer from the queue timer list and free it */
986 static void free_timer( struct msg_queue
*queue
, struct timer
*timer
)
988 list_remove( &timer
->entry
);
990 set_next_timer( queue
);
993 /* restart an expired timer */
994 static void restart_timer( struct msg_queue
*queue
, struct timer
*timer
)
998 list_remove( &timer
->entry
);
999 gettimeofday( &now
, NULL
);
1000 while (!time_before( &now
, &timer
->when
)) add_timeout( &timer
->when
, timer
->rate
);
1001 link_timer( queue
, timer
);
1002 set_next_timer( queue
);
1005 /* find an expired timer matching the filtering parameters */
1006 static struct timer
*find_expired_timer( struct msg_queue
*queue
, user_handle_t win
,
1007 unsigned int get_first
, unsigned int get_last
,
1012 LIST_FOR_EACH( ptr
, &queue
->expired_timers
)
1014 struct timer
*timer
= LIST_ENTRY( ptr
, struct timer
, entry
);
1015 if (win
&& timer
->win
!= win
) continue;
1016 if (check_msg_filter( timer
->msg
, get_first
, get_last
))
1018 if (remove
) restart_timer( queue
, timer
);
1026 static struct timer
*set_timer( struct msg_queue
*queue
, unsigned int rate
)
1028 struct timer
*timer
= mem_alloc( sizeof(*timer
) );
1031 timer
->rate
= max( rate
, 1 );
1032 gettimeofday( &timer
->when
, NULL
);
1033 add_timeout( &timer
->when
, rate
);
1034 link_timer( queue
, timer
);
1035 /* check if we replaced the next timer */
1036 if (list_head( &queue
->pending_timers
) == &timer
->entry
) set_next_timer( queue
);
1041 /* change the input key state for a given key */
1042 static void set_input_key_state( struct thread_input
*input
, unsigned char key
, int down
)
1046 if (!(input
->keystate
[key
] & 0x80)) input
->keystate
[key
] ^= 0x01;
1047 input
->keystate
[key
] |= 0x80;
1049 else input
->keystate
[key
] &= ~0x80;
1052 /* update the input key state for a keyboard message */
1053 static void update_input_key_state( struct thread_input
*input
, const struct message
*msg
)
1056 int down
= 0, extended
;
1060 case WM_LBUTTONDOWN
:
1064 set_input_key_state( input
, VK_LBUTTON
, down
);
1066 case WM_MBUTTONDOWN
:
1070 set_input_key_state( input
, VK_MBUTTON
, down
);
1072 case WM_RBUTTONDOWN
:
1076 set_input_key_state( input
, VK_RBUTTON
, down
);
1078 case WM_XBUTTONDOWN
:
1082 if (msg
->wparam
== XBUTTON1
) set_input_key_state( input
, VK_XBUTTON1
, down
);
1083 else if (msg
->wparam
== XBUTTON2
) set_input_key_state( input
, VK_XBUTTON2
, down
);
1091 key
= (unsigned char)msg
->wparam
;
1092 extended
= ((msg
->lparam
>> 16) & KF_EXTENDED
) != 0;
1093 set_input_key_state( input
, key
, down
);
1097 set_input_key_state( input
, extended
? VK_RSHIFT
: VK_LSHIFT
, down
);
1100 set_input_key_state( input
, extended
? VK_RCONTROL
: VK_LCONTROL
, down
);
1103 set_input_key_state( input
, extended
? VK_RMENU
: VK_LMENU
, down
);
1110 /* release the hardware message currently being processed by the given thread */
1111 static void release_hardware_message( struct msg_queue
*queue
, unsigned int hw_id
,
1112 int remove
, user_handle_t new_win
)
1114 struct thread_input
*input
= queue
->input
;
1115 struct message
*msg
;
1117 LIST_FOR_EACH_ENTRY( msg
, &input
->msg_list
, struct message
, entry
)
1119 if (msg
->unique_id
== hw_id
) break;
1121 if (&msg
->entry
== &input
->msg_list
) return; /* not found */
1123 /* clear the queue bit for that message */
1124 if (remove
|| new_win
)
1126 struct message
*other
;
1129 clr_bit
= get_hardware_msg_bit( msg
);
1130 LIST_FOR_EACH_ENTRY( other
, &input
->msg_list
, struct message
, entry
)
1132 if (other
!= msg
&& get_hardware_msg_bit( other
) == clr_bit
)
1138 if (clr_bit
) clear_queue_bits( queue
, clr_bit
);
1141 if (new_win
) /* set the new window */
1143 struct thread
*owner
= get_window_thread( new_win
);
1146 if (owner
->queue
->input
== input
)
1149 set_queue_bits( owner
->queue
, get_hardware_msg_bit( msg
));
1152 release_object( owner
);
1157 update_input_key_state( input
, msg
);
1158 list_remove( &msg
->entry
);
1159 free_message( msg
);
1163 /* find the window that should receive a given hardware message */
1164 static user_handle_t
find_hardware_message_window( struct thread_input
*input
, struct message
*msg
,
1165 unsigned int *msg_code
)
1167 user_handle_t win
= 0;
1169 *msg_code
= msg
->msg
;
1170 if (is_keyboard_msg( msg
))
1172 if (input
&& !(win
= input
->focus
))
1174 win
= input
->active
;
1175 if (*msg_code
< WM_SYSKEYDOWN
) *msg_code
+= WM_SYSKEYDOWN
- WM_KEYDOWN
;
1178 else /* mouse message */
1180 if (!input
|| !(win
= input
->capture
))
1182 if (!(win
= msg
->win
) || !is_window_visible( win
))
1184 if (input
) win
= window_from_point( input
->desktop
, msg
->x
, msg
->y
);
1191 /* queue a hardware message into a given thread input */
1192 static void queue_hardware_message( struct msg_queue
*queue
, struct message
*msg
)
1195 struct thread
*thread
;
1196 struct thread_input
*input
;
1197 unsigned int msg_code
;
1199 last_input_time
= get_tick_count();
1201 win
= find_hardware_message_window( queue
? queue
->input
: foreground_input
, msg
, &msg_code
);
1202 if (!win
|| !(thread
= get_window_thread(win
)))
1207 input
= thread
->queue
->input
;
1209 if (msg
->msg
== WM_MOUSEMOVE
&& merge_message( input
, msg
)) free( msg
);
1212 msg
->unique_id
= 0; /* will be set once we return it to the app */
1213 list_add_tail( &input
->msg_list
, &msg
->entry
);
1214 set_queue_bits( thread
->queue
, get_hardware_msg_bit(msg
) );
1216 release_object( thread
);
1219 /* check message filter for a hardware message */
1220 static int check_hw_message_filter( user_handle_t win
, unsigned int msg_code
,
1221 user_handle_t filter_win
, unsigned int first
, unsigned int last
)
1223 if (msg_code
>= WM_KEYFIRST
&& msg_code
<= WM_KEYLAST
)
1225 /* we can only test the window for a keyboard message since the
1226 * dest window for a mouse message depends on hittest */
1227 if (filter_win
&& win
!= filter_win
&& !is_child_window( filter_win
, win
))
1229 /* the message code is final for a keyboard message, we can simply check it */
1230 return check_msg_filter( msg_code
, first
, last
);
1232 else /* mouse message */
1234 /* we need to check all possible values that the message can have in the end */
1236 if (check_msg_filter( msg_code
, first
, last
)) return 1;
1237 if (msg_code
== WM_MOUSEWHEEL
) return 0; /* no other possible value for this one */
1239 /* all other messages can become non-client messages */
1240 if (check_msg_filter( msg_code
+ (WM_NCMOUSEFIRST
- WM_MOUSEFIRST
), first
, last
)) return 1;
1242 /* clicks can become double-clicks or non-client double-clicks */
1243 if (msg_code
== WM_LBUTTONDOWN
|| msg_code
== WM_MBUTTONDOWN
||
1244 msg_code
== WM_RBUTTONDOWN
|| msg_code
== WM_XBUTTONDOWN
)
1246 if (check_msg_filter( msg_code
+ (WM_LBUTTONDBLCLK
- WM_LBUTTONDOWN
), first
, last
)) return 1;
1247 if (check_msg_filter( msg_code
+ (WM_NCLBUTTONDBLCLK
- WM_LBUTTONDOWN
), first
, last
)) return 1;
1254 /* find a hardware message for the given queue */
1255 static int get_hardware_message( struct thread
*thread
, int hw_id
, user_handle_t filter_win
,
1256 unsigned int first
, unsigned int last
, struct get_message_reply
*reply
)
1258 struct thread_input
*input
= thread
->queue
->input
;
1259 struct thread
*win_thread
;
1262 int clear_bits
, got_one
= 0;
1263 unsigned int msg_code
;
1265 ptr
= list_head( &input
->msg_list
);
1270 struct message
*msg
= LIST_ENTRY( ptr
, struct message
, entry
);
1271 if (msg
->unique_id
== hw_id
) break;
1272 ptr
= list_next( &input
->msg_list
, ptr
);
1274 if (!ptr
) ptr
= list_head( &input
->msg_list
);
1275 else ptr
= list_next( &input
->msg_list
, ptr
); /* start from the next one */
1278 if (ptr
== list_head( &input
->msg_list
))
1279 clear_bits
= QS_KEY
| QS_MOUSEMOVE
| QS_MOUSEBUTTON
;
1281 clear_bits
= 0; /* don't clear bits if we don't go through the whole list */
1285 struct message
*msg
= LIST_ENTRY( ptr
, struct message
, entry
);
1286 ptr
= list_next( &input
->msg_list
, ptr
);
1287 win
= find_hardware_message_window( input
, msg
, &msg_code
);
1288 if (!win
|| !(win_thread
= get_window_thread( win
)))
1290 /* no window at all, remove it */
1291 update_input_key_state( input
, msg
);
1292 list_remove( &msg
->entry
);
1293 free_message( msg
);
1296 if (win_thread
!= thread
)
1298 if (win_thread
->queue
->input
== input
)
1300 /* wake the other thread */
1301 set_queue_bits( win_thread
->queue
, get_hardware_msg_bit(msg
) );
1306 /* for another thread input, drop it */
1307 update_input_key_state( input
, msg
);
1308 list_remove( &msg
->entry
);
1309 free_message( msg
);
1311 release_object( win_thread
);
1314 release_object( win_thread
);
1316 /* if we already got a message for another thread, or if it doesn't
1317 * match the filter we skip it */
1318 if (got_one
|| !check_hw_message_filter( win
, msg_code
, filter_win
, first
, last
))
1320 clear_bits
&= ~get_hardware_msg_bit( msg
);
1323 /* now we can return it */
1324 if (!msg
->unique_id
) msg
->unique_id
= get_unique_id();
1325 reply
->type
= MSG_HARDWARE
;
1327 reply
->msg
= msg_code
;
1328 reply
->wparam
= msg
->wparam
;
1329 reply
->lparam
= msg
->lparam
;
1332 reply
->time
= msg
->time
;
1333 reply
->info
= msg
->info
;
1334 reply
->hw_id
= msg
->unique_id
;
1337 /* nothing found, clear the hardware queue bits */
1338 clear_queue_bits( thread
->queue
, clear_bits
);
1342 /* increment (or decrement if 'incr' is negative) the queue paint count */
1343 void inc_queue_paint_count( struct thread
*thread
, int incr
)
1345 struct msg_queue
*queue
= thread
->queue
;
1349 if ((queue
->paint_count
+= incr
) < 0) queue
->paint_count
= 0;
1351 if (queue
->paint_count
)
1352 set_queue_bits( queue
, QS_PAINT
);
1354 clear_queue_bits( queue
, QS_PAINT
);
1358 /* remove all messages and timers belonging to a certain window */
1359 void queue_cleanup_window( struct thread
*thread
, user_handle_t win
)
1361 struct msg_queue
*queue
= thread
->queue
;
1369 ptr
= list_head( &queue
->pending_timers
);
1372 struct list
*next
= list_next( &queue
->pending_timers
, ptr
);
1373 struct timer
*timer
= LIST_ENTRY( ptr
, struct timer
, entry
);
1374 if (timer
->win
== win
) free_timer( queue
, timer
);
1377 ptr
= list_head( &queue
->expired_timers
);
1380 struct list
*next
= list_next( &queue
->expired_timers
, ptr
);
1381 struct timer
*timer
= LIST_ENTRY( ptr
, struct timer
, entry
);
1382 if (timer
->win
== win
) free_timer( queue
, timer
);
1386 /* remove messages */
1387 for (i
= 0; i
< NB_MSG_KINDS
; i
++)
1389 struct list
*ptr
, *next
;
1391 LIST_FOR_EACH_SAFE( ptr
, next
, &queue
->msg_list
[i
] )
1393 struct message
*msg
= LIST_ENTRY( ptr
, struct message
, entry
);
1394 if (msg
->win
== win
) remove_queue_message( queue
, msg
, i
);
1398 thread_input_cleanup_window( queue
, win
);
1401 /* post a message to a window; used by socket handling */
1402 void post_message( user_handle_t win
, unsigned int message
,
1403 unsigned int wparam
, unsigned int lparam
)
1405 struct message
*msg
;
1406 struct thread
*thread
= get_window_thread( win
);
1408 if (!thread
) return;
1410 if (thread
->queue
&& (msg
= mem_alloc( sizeof(*msg
) )))
1412 msg
->type
= MSG_POSTED
;
1413 msg
->win
= get_user_full_handle( win
);
1415 msg
->wparam
= wparam
;
1416 msg
->lparam
= lparam
;
1417 msg
->time
= get_tick_count();
1422 msg
->hook_proc
= NULL
;
1427 list_add_tail( &thread
->queue
->msg_list
[POST_MESSAGE
], &msg
->entry
);
1428 set_queue_bits( thread
->queue
, QS_POSTMESSAGE
|QS_ALLPOSTMESSAGE
);
1430 release_object( thread
);
1433 /* post a win event */
1434 void post_win_event( struct thread
*thread
, unsigned int event
,
1435 user_handle_t win
, unsigned int object_id
,
1436 unsigned int child_id
, void *hook_proc
,
1437 const WCHAR
*module
, size_t module_size
,
1440 struct message
*msg
;
1442 if (thread
->queue
&& (msg
= mem_alloc( sizeof(*msg
) )))
1444 msg
->type
= MSG_WINEVENT
;
1445 msg
->win
= get_user_full_handle( win
);
1447 msg
->wparam
= object_id
;
1448 msg
->lparam
= child_id
;
1449 msg
->time
= get_tick_count();
1452 msg
->info
= get_thread_id( current
);
1455 msg
->hook_proc
= hook_proc
;
1457 if ((msg
->data
= malloc( module_size
)))
1459 msg
->data_size
= module_size
;
1460 memcpy( msg
->data
, module
, module_size
);
1462 if (debug_level
> 1)
1463 fprintf( stderr
, "post_win_event: tid %04x event %04x win %p object_id %d child_id %d\n",
1464 get_thread_id(thread
), event
, win
, object_id
, child_id
);
1465 list_add_tail( &thread
->queue
->msg_list
[SEND_MESSAGE
], &msg
->entry
);
1466 set_queue_bits( thread
->queue
, QS_SENDMESSAGE
);
1473 /* get the message queue of the current thread */
1474 DECL_HANDLER(get_msg_queue
)
1476 struct msg_queue
*queue
= get_current_queue();
1479 if (queue
) reply
->handle
= alloc_handle( current
->process
, queue
, SYNCHRONIZE
, 0 );
1483 /* set the current message queue wakeup mask */
1484 DECL_HANDLER(set_queue_mask
)
1486 struct msg_queue
*queue
= get_current_queue();
1490 queue
->wake_mask
= req
->wake_mask
;
1491 queue
->changed_mask
= req
->changed_mask
;
1492 reply
->wake_bits
= queue
->wake_bits
;
1493 reply
->changed_bits
= queue
->changed_bits
;
1494 if (is_signaled( queue
))
1496 /* if skip wait is set, do what would have been done in the subsequent wait */
1497 if (req
->skip_wait
) msg_queue_satisfied( &queue
->obj
, current
);
1498 else wake_up( &queue
->obj
, 0 );
1504 /* get the current message queue status */
1505 DECL_HANDLER(get_queue_status
)
1507 struct msg_queue
*queue
= current
->queue
;
1510 reply
->wake_bits
= queue
->wake_bits
;
1511 reply
->changed_bits
= queue
->changed_bits
;
1512 if (req
->clear
) queue
->changed_bits
= 0;
1514 else reply
->wake_bits
= reply
->changed_bits
= 0;
1518 /* send a message to a thread queue */
1519 DECL_HANDLER(send_message
)
1521 struct message
*msg
;
1522 struct msg_queue
*send_queue
= get_current_queue();
1523 struct msg_queue
*recv_queue
= NULL
;
1524 struct thread
*thread
= NULL
;
1528 if (!(thread
= get_thread_from_id( req
->id
))) return;
1530 else if (req
->type
!= MSG_HARDWARE
)
1532 /* only hardware messages are allowed without destination thread */
1533 set_error( STATUS_INVALID_PARAMETER
);
1537 if (thread
&& !(recv_queue
= thread
->queue
))
1539 set_error( STATUS_INVALID_PARAMETER
);
1540 release_object( thread
);
1543 if (recv_queue
&& (req
->flags
& SEND_MSG_ABORT_IF_HUNG
) && is_queue_hung(recv_queue
))
1545 set_error( STATUS_TIMEOUT
);
1546 release_object( thread
);
1550 if ((msg
= mem_alloc( sizeof(*msg
) )))
1552 msg
->type
= req
->type
;
1553 msg
->win
= get_user_full_handle( req
->win
);
1554 msg
->msg
= req
->msg
;
1555 msg
->wparam
= req
->wparam
;
1556 msg
->lparam
= req
->lparam
;
1557 msg
->time
= req
->time
;
1560 msg
->info
= req
->info
;
1562 msg
->hook_proc
= NULL
;
1569 case MSG_OTHER_PROCESS
:
1570 msg
->data_size
= get_req_data_size();
1571 if (msg
->data_size
&& !(msg
->data
= memdup( get_req_data(), msg
->data_size
)))
1580 if (!(msg
->result
= alloc_message_result( send_queue
, recv_queue
, msg
,
1581 req
->timeout
, req
->callback
, req
->info
)))
1583 free_message( msg
);
1588 list_add_tail( &recv_queue
->msg_list
[SEND_MESSAGE
], &msg
->entry
);
1589 set_queue_bits( recv_queue
, QS_SENDMESSAGE
);
1592 /* needed for posted DDE messages */
1593 msg
->data_size
= get_req_data_size();
1594 if (msg
->data_size
&& !(msg
->data
= memdup( get_req_data(), msg
->data_size
)))
1599 list_add_tail( &recv_queue
->msg_list
[POST_MESSAGE
], &msg
->entry
);
1600 set_queue_bits( recv_queue
, QS_POSTMESSAGE
|QS_ALLPOSTMESSAGE
);
1603 queue_hardware_message( recv_queue
, msg
);
1605 case MSG_CALLBACK_RESULT
: /* cannot send this one */
1607 set_error( STATUS_INVALID_PARAMETER
);
1612 if (thread
) release_object( thread
);
1616 /* get a message from the current queue */
1617 DECL_HANDLER(get_message
)
1619 struct timer
*timer
;
1621 struct msg_queue
*queue
= get_current_queue();
1622 user_handle_t get_win
= get_user_full_handle( req
->get_win
);
1624 reply
->active_hooks
= get_active_hooks();
1627 gettimeofday( &queue
->last_get_msg
, NULL
);
1629 /* first check for sent messages */
1630 if ((ptr
= list_head( &queue
->msg_list
[SEND_MESSAGE
] )))
1632 struct message
*msg
= LIST_ENTRY( ptr
, struct message
, entry
);
1633 receive_message( queue
, msg
, reply
);
1636 if (req
->flags
& GET_MSG_SENT_ONLY
) goto done
; /* nothing else to check */
1638 /* clear changed bits so we can wait on them if we don't find a message */
1639 if (req
->get_first
== 0 && req
->get_last
== ~0U) queue
->changed_bits
= 0;
1640 else queue
->changed_bits
&= QS_ALLPOSTMESSAGE
;
1642 /* then check for posted messages */
1643 if (get_posted_message( queue
, get_win
, req
->get_first
, req
->get_last
, req
->flags
, reply
))
1646 /* then check for any raw hardware message */
1647 if (filter_contains_hw_range( req
->get_first
, req
->get_last
) &&
1648 get_hardware_message( current
, req
->hw_id
, get_win
, req
->get_first
, req
->get_last
, reply
))
1651 /* now check for WM_PAINT */
1652 if (queue
->paint_count
&&
1653 check_msg_filter( WM_PAINT
, req
->get_first
, req
->get_last
) &&
1654 (reply
->win
= find_window_to_repaint( get_win
, current
)))
1656 reply
->type
= MSG_POSTED
;
1657 reply
->msg
= WM_PAINT
;
1662 reply
->time
= get_tick_count();
1667 /* now check for timer */
1668 if ((timer
= find_expired_timer( queue
, get_win
, req
->get_first
,
1669 req
->get_last
, (req
->flags
& GET_MSG_REMOVE
) )))
1671 reply
->type
= MSG_POSTED
;
1672 reply
->win
= timer
->win
;
1673 reply
->msg
= timer
->msg
;
1674 reply
->wparam
= timer
->id
;
1675 reply
->lparam
= timer
->lparam
;
1678 reply
->time
= get_tick_count();
1684 set_error( STATUS_PENDING
); /* FIXME */
1688 /* reply to a sent message */
1689 DECL_HANDLER(reply_message
)
1691 if (!current
->queue
) set_error( STATUS_ACCESS_DENIED
);
1692 else if (current
->queue
->recv_result
)
1693 reply_message( current
->queue
, req
->result
, 0, req
->remove
,
1694 get_req_data(), get_req_data_size() );
1698 /* accept the current hardware message */
1699 DECL_HANDLER(accept_hardware_message
)
1702 release_hardware_message( current
->queue
, req
->hw_id
, req
->remove
, req
->new_win
);
1704 set_error( STATUS_ACCESS_DENIED
);
1708 /* retrieve the reply for the last message sent */
1709 DECL_HANDLER(get_message_reply
)
1711 struct message_result
*result
;
1713 struct msg_queue
*queue
= current
->queue
;
1717 set_error( STATUS_PENDING
);
1720 if (!(entry
= list_head( &queue
->send_result
))) return; /* no reply ready */
1722 result
= LIST_ENTRY( entry
, struct message_result
, sender_entry
);
1723 if (result
->replied
|| req
->cancel
)
1725 if (result
->replied
)
1727 reply
->result
= result
->result
;
1728 set_error( result
->error
);
1731 size_t data_len
= min( result
->data_size
, get_reply_max_size() );
1732 set_reply_data_ptr( result
->data
, data_len
);
1733 result
->data
= NULL
;
1734 result
->data_size
= 0;
1737 remove_result_from_sender( result
);
1739 entry
= list_head( &queue
->send_result
);
1740 if (!entry
) clear_queue_bits( queue
, QS_SMRESULT
);
1743 result
= LIST_ENTRY( entry
, struct message_result
, sender_entry
);
1744 if (!result
->replied
) clear_queue_bits( queue
, QS_SMRESULT
);
1748 else set_error( STATUS_ACCESS_DENIED
);
1752 /* set a window timer */
1753 DECL_HANDLER(set_win_timer
)
1755 struct timer
*timer
;
1756 struct msg_queue
*queue
;
1757 struct thread
*thread
= NULL
;
1758 user_handle_t win
= 0;
1759 unsigned int id
= req
->id
;
1763 if (!(win
= get_user_full_handle( req
->win
)) || !(thread
= get_window_thread( win
)))
1765 set_error( STATUS_INVALID_HANDLE
);
1768 if (thread
->process
!= current
->process
)
1770 release_object( thread
);
1771 set_error( STATUS_ACCESS_DENIED
);
1774 queue
= thread
->queue
;
1775 /* remove it if it existed already */
1776 if ((timer
= find_timer( queue
, win
, req
->msg
, id
))) free_timer( queue
, timer
);
1780 queue
= get_current_queue();
1781 /* find a free id for it */
1784 id
= queue
->next_timer_id
;
1785 if (++queue
->next_timer_id
>= 0x10000) queue
->next_timer_id
= 1;
1787 while (find_timer( queue
, 0, req
->msg
, id
));
1790 if ((timer
= set_timer( queue
, req
->rate
)))
1793 timer
->msg
= req
->msg
;
1795 timer
->lparam
= req
->lparam
;
1798 if (thread
) release_object( thread
);
1801 /* kill a window timer */
1802 DECL_HANDLER(kill_win_timer
)
1804 struct timer
*timer
;
1805 struct thread
*thread
;
1806 user_handle_t win
= 0;
1810 if (!(win
= get_user_full_handle( req
->win
)) || !(thread
= get_window_thread( win
)))
1812 set_error( STATUS_INVALID_HANDLE
);
1815 if (thread
->process
!= current
->process
)
1817 release_object( thread
);
1818 set_error( STATUS_ACCESS_DENIED
);
1822 else thread
= (struct thread
*)grab_object( current
);
1824 if (thread
->queue
&& (timer
= find_timer( thread
->queue
, win
, req
->msg
, req
->id
)))
1825 free_timer( thread
->queue
, timer
);
1827 set_error( STATUS_INVALID_PARAMETER
);
1829 release_object( thread
);
1833 /* attach (or detach) thread inputs */
1834 DECL_HANDLER(attach_thread_input
)
1836 struct thread
*thread_from
= get_thread_from_id( req
->tid_from
);
1837 struct thread
*thread_to
= get_thread_from_id( req
->tid_to
);
1839 if (!thread_from
|| !thread_to
)
1841 if (thread_from
) release_object( thread_from
);
1842 if (thread_to
) release_object( thread_to
);
1845 if (thread_from
!= thread_to
)
1847 if (req
->attach
) attach_thread_input( thread_from
, thread_to
);
1850 if (thread_from
->queue
&& thread_to
->queue
&&
1851 thread_from
->queue
->input
== thread_to
->queue
->input
)
1852 detach_thread_input( thread_from
);
1854 set_error( STATUS_ACCESS_DENIED
);
1857 else set_error( STATUS_ACCESS_DENIED
);
1858 release_object( thread_from
);
1859 release_object( thread_to
);
1863 /* get thread input data */
1864 DECL_HANDLER(get_thread_input
)
1866 struct thread
*thread
= NULL
;
1867 struct thread_input
*input
;
1871 if (!(thread
= get_thread_from_id( req
->tid
))) return;
1872 input
= thread
->queue
? thread
->queue
->input
: NULL
;
1874 else input
= foreground_input
; /* get the foreground thread info */
1878 reply
->focus
= input
->focus
;
1879 reply
->capture
= input
->capture
;
1880 reply
->active
= input
->active
;
1881 reply
->menu_owner
= input
->menu_owner
;
1882 reply
->move_size
= input
->move_size
;
1883 reply
->caret
= input
->caret
;
1884 reply
->rect
= input
->caret_rect
;
1891 reply
->menu_owner
= 0;
1892 reply
->move_size
= 0;
1894 reply
->rect
.left
= reply
->rect
.top
= reply
->rect
.right
= reply
->rect
.bottom
= 0;
1896 /* foreground window is active window of foreground thread */
1897 reply
->foreground
= foreground_input
? foreground_input
->active
: 0;
1898 if (thread
) release_object( thread
);
1902 /* retrieve queue keyboard state for a given thread */
1903 DECL_HANDLER(get_key_state
)
1905 struct thread
*thread
;
1906 struct thread_input
*input
;
1908 if (!(thread
= get_thread_from_id( req
->tid
))) return;
1909 input
= thread
->queue
? thread
->queue
->input
: NULL
;
1912 if (req
->key
>= 0) reply
->state
= input
->keystate
[req
->key
& 0xff];
1913 set_reply_data( input
->keystate
, min( get_reply_max_size(), sizeof(input
->keystate
) ));
1915 release_object( thread
);
1919 /* set queue keyboard state for a given thread */
1920 DECL_HANDLER(set_key_state
)
1922 struct thread
*thread
= NULL
;
1923 struct thread_input
*input
;
1925 if (!(thread
= get_thread_from_id( req
->tid
))) return;
1926 input
= thread
->queue
? thread
->queue
->input
: NULL
;
1929 size_t size
= min( sizeof(input
->keystate
), get_req_data_size() );
1930 if (size
) memcpy( input
->keystate
, get_req_data(), size
);
1932 release_object( thread
);
1936 /* set the system foreground window */
1937 DECL_HANDLER(set_foreground_window
)
1939 struct msg_queue
*queue
= get_current_queue();
1941 reply
->previous
= foreground_input
? foreground_input
->active
: 0;
1942 reply
->send_msg_old
= (reply
->previous
&& foreground_input
!= queue
->input
);
1943 reply
->send_msg_new
= FALSE
;
1947 struct thread
*thread
;
1949 if (is_top_level_window( req
->handle
) &&
1950 ((thread
= get_window_thread( req
->handle
))))
1952 foreground_input
= thread
->queue
->input
;
1953 reply
->send_msg_new
= (foreground_input
!= queue
->input
);
1954 release_object( thread
);
1956 else set_error( STATUS_INVALID_HANDLE
);
1958 else foreground_input
= NULL
;
1962 /* set the current thread focus window */
1963 DECL_HANDLER(set_focus_window
)
1965 struct msg_queue
*queue
= get_current_queue();
1967 reply
->previous
= 0;
1968 if (queue
&& check_queue_input_window( queue
, req
->handle
))
1970 reply
->previous
= queue
->input
->focus
;
1971 queue
->input
->focus
= get_user_full_handle( req
->handle
);
1976 /* set the current thread active window */
1977 DECL_HANDLER(set_active_window
)
1979 struct msg_queue
*queue
= get_current_queue();
1981 reply
->previous
= 0;
1982 if (queue
&& check_queue_input_window( queue
, req
->handle
))
1984 if (!req
->handle
|| make_window_active( req
->handle
))
1986 reply
->previous
= queue
->input
->active
;
1987 queue
->input
->active
= get_user_full_handle( req
->handle
);
1989 else set_error( STATUS_INVALID_HANDLE
);
1994 /* set the current thread capture window */
1995 DECL_HANDLER(set_capture_window
)
1997 struct msg_queue
*queue
= get_current_queue();
1999 reply
->previous
= reply
->full_handle
= 0;
2000 if (queue
&& check_queue_input_window( queue
, req
->handle
))
2002 struct thread_input
*input
= queue
->input
;
2004 reply
->previous
= input
->capture
;
2005 input
->capture
= get_user_full_handle( req
->handle
);
2006 input
->menu_owner
= (req
->flags
& CAPTURE_MENU
) ? input
->capture
: 0;
2007 input
->move_size
= (req
->flags
& CAPTURE_MOVESIZE
) ? input
->capture
: 0;
2008 reply
->full_handle
= input
->capture
;
2013 /* Set the current thread caret window */
2014 DECL_HANDLER(set_caret_window
)
2016 struct msg_queue
*queue
= get_current_queue();
2018 reply
->previous
= 0;
2019 if (queue
&& check_queue_input_window( queue
, req
->handle
))
2021 struct thread_input
*input
= queue
->input
;
2023 reply
->previous
= input
->caret
;
2024 reply
->old_rect
= input
->caret_rect
;
2025 reply
->old_hide
= input
->caret_hide
;
2026 reply
->old_state
= input
->caret_state
;
2028 set_caret_window( input
, get_user_full_handle(req
->handle
) );
2029 input
->caret_rect
.right
= input
->caret_rect
.left
+ req
->width
;
2030 input
->caret_rect
.bottom
= input
->caret_rect
.top
+ req
->height
;
2035 /* Set the current thread caret information */
2036 DECL_HANDLER(set_caret_info
)
2038 struct msg_queue
*queue
= get_current_queue();
2039 struct thread_input
*input
;
2042 input
= queue
->input
;
2043 reply
->full_handle
= input
->caret
;
2044 reply
->old_rect
= input
->caret_rect
;
2045 reply
->old_hide
= input
->caret_hide
;
2046 reply
->old_state
= input
->caret_state
;
2048 if (req
->handle
&& get_user_full_handle(req
->handle
) != input
->caret
)
2050 set_error( STATUS_ACCESS_DENIED
);
2053 if (req
->flags
& SET_CARET_POS
)
2055 input
->caret_rect
.right
+= req
->x
- input
->caret_rect
.left
;
2056 input
->caret_rect
.bottom
+= req
->y
- input
->caret_rect
.top
;
2057 input
->caret_rect
.left
= req
->x
;
2058 input
->caret_rect
.top
= req
->y
;
2060 if (req
->flags
& SET_CARET_HIDE
)
2062 input
->caret_hide
+= req
->hide
;
2063 if (input
->caret_hide
< 0) input
->caret_hide
= 0;
2065 if (req
->flags
& SET_CARET_STATE
)
2067 if (req
->state
== -1) input
->caret_state
= !input
->caret_state
;
2068 else input
->caret_state
= !!req
->state
;
2073 /* get the time of the last input event */
2074 DECL_HANDLER(get_last_input_time
)
2076 reply
->time
= last_input_time
;