2 * Server-side message queues
4 * Copyright (C) 2000 Alexandre Julliard
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
22 #include "wine/port.h"
30 #define WIN32_NO_STATUS
44 #define WM_NCMOUSEFIRST WM_NCMOUSEMOVE
45 #define WM_NCMOUSELAST (WM_NCMOUSEFIRST+(WM_MOUSELAST-WM_MOUSEFIRST))
47 enum message_kind
{ SEND_MESSAGE
, POST_MESSAGE
};
48 #define NB_MSG_KINDS (POST_MESSAGE+1)
53 struct list sender_entry
; /* entry in sender list */
54 struct message
*msg
; /* message the result is for */
55 struct message_result
*recv_next
; /* next in receiver list */
56 struct msg_queue
*sender
; /* sender queue */
57 struct msg_queue
*receiver
; /* receiver queue */
58 int replied
; /* has it been replied to? */
59 unsigned int result
; /* reply result */
60 unsigned int error
; /* error code to pass back to sender */
61 struct message
*callback_msg
; /* message to queue for callback */
62 void *data
; /* message reply data */
63 unsigned int data_size
; /* size of message reply data */
64 struct timeout_user
*timeout
; /* result timeout */
69 struct list entry
; /* entry in message list */
70 enum message_type type
; /* message type */
71 user_handle_t win
; /* window handle */
72 unsigned int msg
; /* message code */
73 unsigned long wparam
; /* parameters */
74 unsigned long lparam
; /* parameters */
75 unsigned long info
; /* extra info */
76 int x
; /* x position */
77 int y
; /* y position */
78 unsigned int time
; /* message time */
79 void *data
; /* message data for sent messages */
80 unsigned int data_size
; /* size of message data */
81 unsigned int unique_id
; /* unique id for nested hw message waits */
82 struct message_result
*result
; /* result in sender queue */
87 struct list entry
; /* entry in timer list */
88 struct timeval when
; /* next expiration */
89 unsigned int rate
; /* timer rate in ms */
90 user_handle_t win
; /* window handle */
91 unsigned int msg
; /* message to post */
92 unsigned long id
; /* timer id */
93 unsigned long lparam
; /* lparam for message */
98 struct object obj
; /* object header */
99 struct desktop
*desktop
; /* desktop that this thread input belongs to */
100 user_handle_t focus
; /* focus window */
101 user_handle_t capture
; /* capture window */
102 user_handle_t active
; /* active window */
103 user_handle_t menu_owner
; /* current menu owner window */
104 user_handle_t move_size
; /* current moving/resizing window */
105 user_handle_t caret
; /* caret window */
106 rectangle_t caret_rect
; /* caret rectangle */
107 int caret_hide
; /* caret hide count */
108 int caret_state
; /* caret on/off state */
109 struct list msg_list
; /* list of hardware messages */
110 unsigned char keystate
[256]; /* state of each key */
115 struct object obj
; /* object header */
116 struct fd
*fd
; /* optional file descriptor to poll */
117 unsigned int wake_bits
; /* wakeup bits */
118 unsigned int wake_mask
; /* wakeup mask */
119 unsigned int changed_bits
; /* changed wakeup bits */
120 unsigned int changed_mask
; /* changed wakeup mask */
121 int paint_count
; /* pending paint messages count */
122 int quit_message
; /* is there a pending quit message? */
123 int exit_code
; /* exit code of pending quit message */
124 struct list msg_list
[NB_MSG_KINDS
]; /* lists of messages */
125 struct list send_result
; /* stack of sent messages waiting for result */
126 struct list callback_result
; /* list of callback messages waiting for result */
127 struct message_result
*recv_result
; /* stack of received messages waiting for result */
128 struct list pending_timers
; /* list of pending timers */
129 struct list expired_timers
; /* list of expired timers */
130 unsigned long next_timer_id
; /* id for the next timer with a 0 window */
131 struct timeout_user
*timeout
; /* timeout for next timer to expire */
132 struct thread_input
*input
; /* thread input descriptor */
133 struct hook_table
*hooks
; /* hook table */
134 struct timeval last_get_msg
; /* time of last get message call */
137 static void msg_queue_dump( struct object
*obj
, int verbose
);
138 static int msg_queue_add_queue( struct object
*obj
, struct wait_queue_entry
*entry
);
139 static void msg_queue_remove_queue( struct object
*obj
, struct wait_queue_entry
*entry
);
140 static int msg_queue_signaled( struct object
*obj
, struct thread
*thread
);
141 static int msg_queue_satisfied( struct object
*obj
, struct thread
*thread
);
142 static void msg_queue_destroy( struct object
*obj
);
143 static void msg_queue_poll_event( struct fd
*fd
, int event
);
144 static void thread_input_dump( struct object
*obj
, int verbose
);
145 static void thread_input_destroy( struct object
*obj
);
146 static void timer_callback( void *private );
148 static const struct object_ops msg_queue_ops
=
150 sizeof(struct msg_queue
), /* size */
151 msg_queue_dump
, /* dump */
152 msg_queue_add_queue
, /* add_queue */
153 msg_queue_remove_queue
, /* remove_queue */
154 msg_queue_signaled
, /* signaled */
155 msg_queue_satisfied
, /* satisfied */
156 no_signal
, /* signal */
157 no_get_fd
, /* get_fd */
158 no_map_access
, /* map_access */
159 no_lookup_name
, /* lookup_name */
160 no_open_file
, /* open_file */
161 no_close_handle
, /* close_handle */
162 msg_queue_destroy
/* destroy */
165 static const struct fd_ops msg_queue_fd_ops
=
167 NULL
, /* get_poll_events */
168 msg_queue_poll_event
, /* poll_event */
169 no_flush
, /* flush */
170 no_get_file_info
, /* get_file_info */
171 no_queue_async
, /* queue_async */
172 no_cancel_async
/* cancel async */
176 static const struct object_ops thread_input_ops
=
178 sizeof(struct thread_input
), /* size */
179 thread_input_dump
, /* dump */
180 no_add_queue
, /* add_queue */
181 NULL
, /* remove_queue */
183 NULL
, /* satisfied */
184 no_signal
, /* signal */
185 no_get_fd
, /* get_fd */
186 no_map_access
, /* map_access */
187 no_lookup_name
, /* lookup_name */
188 no_open_file
, /* open_file */
189 no_close_handle
, /* close_handle */
190 thread_input_destroy
/* destroy */
193 /* pointer to input structure of foreground thread */
194 static struct thread_input
*foreground_input
;
195 static unsigned int last_input_time
;
197 static void free_message( struct message
*msg
);
199 /* set the caret window in a given thread input */
200 static void set_caret_window( struct thread_input
*input
, user_handle_t win
)
202 if (!win
|| win
!= input
->caret
)
204 input
->caret_rect
.left
= 0;
205 input
->caret_rect
.top
= 0;
206 input
->caret_rect
.right
= 0;
207 input
->caret_rect
.bottom
= 0;
210 input
->caret_hide
= 1;
211 input
->caret_state
= 0;
214 /* create a thread input object */
215 static struct thread_input
*create_thread_input( struct thread
*thread
)
217 struct thread_input
*input
;
219 if ((input
= alloc_object( &thread_input_ops
)))
224 input
->menu_owner
= 0;
225 input
->move_size
= 0;
226 list_init( &input
->msg_list
);
227 set_caret_window( input
, 0 );
228 memset( input
->keystate
, 0, sizeof(input
->keystate
) );
230 if (!(input
->desktop
= get_thread_desktop( thread
, 0 /* FIXME: access rights */ )))
232 release_object( input
);
239 /* release the thread input data of a given thread */
240 static inline void release_thread_input( struct thread
*thread
)
242 struct thread_input
*input
= thread
->queue
->input
;
245 release_object( input
);
246 thread
->queue
->input
= NULL
;
249 /* create a message queue object */
250 static struct msg_queue
*create_msg_queue( struct thread
*thread
, struct thread_input
*input
)
252 struct msg_queue
*queue
;
255 if (!input
&& !(input
= create_thread_input( thread
))) return NULL
;
256 if ((queue
= alloc_object( &msg_queue_ops
)))
259 queue
->wake_bits
= 0;
260 queue
->wake_mask
= 0;
261 queue
->changed_bits
= 0;
262 queue
->changed_mask
= 0;
263 queue
->paint_count
= 0;
264 queue
->quit_message
= 0;
265 queue
->recv_result
= NULL
;
266 queue
->next_timer_id
= 1;
267 queue
->timeout
= NULL
;
268 queue
->input
= (struct thread_input
*)grab_object( input
);
270 queue
->last_get_msg
= current_time
;
271 list_init( &queue
->send_result
);
272 list_init( &queue
->callback_result
);
273 list_init( &queue
->pending_timers
);
274 list_init( &queue
->expired_timers
);
275 for (i
= 0; i
< NB_MSG_KINDS
; i
++) list_init( &queue
->msg_list
[i
] );
277 thread
->queue
= queue
;
278 if (!thread
->process
->queue
)
279 thread
->process
->queue
= (struct msg_queue
*)grab_object( queue
);
281 release_object( input
);
285 /* free the message queue of a thread at thread exit */
286 void free_msg_queue( struct thread
*thread
)
288 struct process
*process
= thread
->process
;
290 remove_thread_hooks( thread
);
291 if (!thread
->queue
) return;
292 if (process
->queue
== thread
->queue
) /* is it the process main queue? */
294 release_object( process
->queue
);
295 process
->queue
= NULL
;
296 if (process
->idle_event
)
298 set_event( process
->idle_event
);
299 release_object( process
->idle_event
);
300 process
->idle_event
= NULL
;
303 release_object( thread
->queue
);
304 thread
->queue
= NULL
;
307 /* get the hook table for a given thread */
308 struct hook_table
*get_queue_hooks( struct thread
*thread
)
310 if (!thread
->queue
) return NULL
;
311 return thread
->queue
->hooks
;
314 /* set the hook table for a given thread, allocating the queue if needed */
315 void set_queue_hooks( struct thread
*thread
, struct hook_table
*hooks
)
317 struct msg_queue
*queue
= thread
->queue
;
318 if (!queue
&& !(queue
= create_msg_queue( thread
, NULL
))) return;
319 if (queue
->hooks
) release_object( queue
->hooks
);
320 queue
->hooks
= hooks
;
323 /* check the queue status */
324 static inline int is_signaled( struct msg_queue
*queue
)
326 return ((queue
->wake_bits
& queue
->wake_mask
) || (queue
->changed_bits
& queue
->changed_mask
));
329 /* set some queue bits */
330 static inline void set_queue_bits( struct msg_queue
*queue
, unsigned int bits
)
332 queue
->wake_bits
|= bits
;
333 queue
->changed_bits
|= bits
;
334 if (is_signaled( queue
)) wake_up( &queue
->obj
, 0 );
337 /* clear some queue bits */
338 static inline void clear_queue_bits( struct msg_queue
*queue
, unsigned int bits
)
340 queue
->wake_bits
&= ~bits
;
341 queue
->changed_bits
&= ~bits
;
344 /* check whether msg is a keyboard message */
345 static inline int is_keyboard_msg( struct message
*msg
)
347 return (msg
->msg
>= WM_KEYFIRST
&& msg
->msg
<= WM_KEYLAST
);
350 /* check if message is matched by the filter */
351 static inline int check_msg_filter( unsigned int msg
, unsigned int first
, unsigned int last
)
353 return (msg
>= first
&& msg
<= last
);
356 /* check whether a message filter contains at least one potential hardware message */
357 static inline int filter_contains_hw_range( unsigned int first
, unsigned int last
)
359 /* hardware message ranges are (in numerical order):
360 * WM_NCMOUSEFIRST .. WM_NCMOUSELAST
361 * WM_KEYFIRST .. WM_KEYLAST
362 * WM_MOUSEFIRST .. WM_MOUSELAST
364 if (last
< WM_NCMOUSEFIRST
) return 0;
365 if (first
> WM_NCMOUSELAST
&& last
< WM_KEYFIRST
) return 0;
366 if (first
> WM_KEYLAST
&& last
< WM_MOUSEFIRST
) return 0;
367 if (first
> WM_MOUSELAST
) return 0;
371 /* get the QS_* bit corresponding to a given hardware message */
372 static inline int get_hardware_msg_bit( struct message
*msg
)
374 if (msg
->msg
== WM_MOUSEMOVE
|| msg
->msg
== WM_NCMOUSEMOVE
) return QS_MOUSEMOVE
;
375 if (is_keyboard_msg( msg
)) return QS_KEY
;
376 return QS_MOUSEBUTTON
;
379 /* get the current thread queue, creating it if needed */
380 static inline struct msg_queue
*get_current_queue(void)
382 struct msg_queue
*queue
= current
->queue
;
383 if (!queue
) queue
= create_msg_queue( current
, NULL
);
387 /* get a (pseudo-)unique id to tag hardware messages */
388 static inline unsigned int get_unique_id(void)
390 static unsigned int id
;
391 if (!++id
) id
= 1; /* avoid an id of 0 */
395 /* try to merge a message with the last in the list; return 1 if successful */
396 static int merge_message( struct thread_input
*input
, const struct message
*msg
)
398 struct message
*prev
;
399 struct list
*ptr
= list_tail( &input
->msg_list
);
402 prev
= LIST_ENTRY( ptr
, struct message
, entry
);
403 if (prev
->unique_id
) return 0;
404 if (prev
->result
) return 0;
405 if (prev
->win
!= msg
->win
) return 0;
406 if (prev
->msg
!= msg
->msg
) return 0;
407 if (prev
->type
!= msg
->type
) return 0;
408 /* now we can merge it */
409 prev
->wparam
= msg
->wparam
;
410 prev
->lparam
= msg
->lparam
;
413 prev
->time
= msg
->time
;
414 prev
->info
= msg
->info
;
418 /* free a result structure */
419 static void free_result( struct message_result
*result
)
421 if (result
->timeout
) remove_timeout_user( result
->timeout
);
422 free( result
->data
);
423 if (result
->callback_msg
) free_message( result
->callback_msg
);
427 /* remove the result from the sender list it is on */
428 static inline void remove_result_from_sender( struct message_result
*result
)
430 assert( result
->sender
);
432 list_remove( &result
->sender_entry
);
433 result
->sender
= NULL
;
434 if (!result
->receiver
) free_result( result
);
437 /* store the message result in the appropriate structure */
438 static void store_message_result( struct message_result
*res
, unsigned int result
,
441 res
->result
= result
;
446 remove_timeout_user( res
->timeout
);
451 if (res
->callback_msg
)
453 /* queue the callback message in the sender queue */
454 struct callback_msg_data
*data
= res
->callback_msg
->data
;
455 data
->result
= result
;
456 list_add_tail( &res
->sender
->msg_list
[SEND_MESSAGE
], &res
->callback_msg
->entry
);
457 set_queue_bits( res
->sender
, QS_SENDMESSAGE
);
458 res
->callback_msg
= NULL
;
459 remove_result_from_sender( res
);
463 /* wake sender queue if waiting on this result */
464 if (list_head(&res
->sender
->send_result
) == &res
->sender_entry
)
465 set_queue_bits( res
->sender
, QS_SMRESULT
);
471 /* free a message when deleting a queue or window */
472 static void free_message( struct message
*msg
)
474 struct message_result
*result
= msg
->result
;
480 result
->receiver
= NULL
;
481 store_message_result( result
, 0, STATUS_ACCESS_DENIED
/*FIXME*/ );
483 else free_result( result
);
489 /* remove (and free) a message from a message list */
490 static void remove_queue_message( struct msg_queue
*queue
, struct message
*msg
,
491 enum message_kind kind
)
493 list_remove( &msg
->entry
);
497 if (list_empty( &queue
->msg_list
[kind
] )) clear_queue_bits( queue
, QS_SENDMESSAGE
);
500 if (list_empty( &queue
->msg_list
[kind
] ) && !queue
->quit_message
)
501 clear_queue_bits( queue
, QS_POSTMESSAGE
|QS_ALLPOSTMESSAGE
);
507 /* message timed out without getting a reply */
508 static void result_timeout( void *private )
510 struct message_result
*result
= private;
512 assert( !result
->replied
);
514 result
->timeout
= NULL
;
516 if (result
->msg
) /* not received yet */
518 struct message
*msg
= result
->msg
;
522 remove_queue_message( result
->receiver
, msg
, SEND_MESSAGE
);
523 result
->receiver
= NULL
;
526 free_result( result
);
531 store_message_result( result
, 0, STATUS_TIMEOUT
);
534 /* allocate and fill a message result structure */
535 static struct message_result
*alloc_message_result( struct msg_queue
*send_queue
,
536 struct msg_queue
*recv_queue
,
537 struct message
*msg
, int timeout
)
539 struct message_result
*result
= mem_alloc( sizeof(*result
) );
543 result
->sender
= send_queue
;
544 result
->receiver
= recv_queue
;
547 result
->data_size
= 0;
548 result
->timeout
= NULL
;
550 if (msg
->type
== MSG_CALLBACK
)
552 struct message
*callback_msg
= mem_alloc( sizeof(*callback_msg
) );
559 callback_msg
->type
= MSG_CALLBACK_RESULT
;
560 callback_msg
->win
= msg
->win
;
561 callback_msg
->msg
= msg
->msg
;
562 callback_msg
->wparam
= 0;
563 callback_msg
->lparam
= 0;
564 callback_msg
->time
= get_tick_count();
567 callback_msg
->info
= 0;
568 callback_msg
->result
= NULL
;
569 /* steal the data from the original message */
570 callback_msg
->data
= msg
->data
;
571 callback_msg
->data_size
= msg
->data_size
;
575 result
->callback_msg
= callback_msg
;
576 list_add_head( &send_queue
->callback_result
, &result
->sender_entry
);
580 result
->callback_msg
= NULL
;
581 list_add_head( &send_queue
->send_result
, &result
->sender_entry
);
586 struct timeval when
= current_time
;
587 add_timeout( &when
, timeout
);
588 result
->timeout
= add_timeout_user( &when
, result_timeout
, result
);
594 /* receive a message, removing it from the sent queue */
595 static void receive_message( struct msg_queue
*queue
, struct message
*msg
,
596 struct get_message_reply
*reply
)
598 struct message_result
*result
= msg
->result
;
600 reply
->total
= msg
->data_size
;
601 if (msg
->data_size
> get_reply_max_size())
603 set_error( STATUS_BUFFER_OVERFLOW
);
606 reply
->type
= msg
->type
;
607 reply
->win
= msg
->win
;
608 reply
->msg
= msg
->msg
;
609 reply
->wparam
= msg
->wparam
;
610 reply
->lparam
= msg
->lparam
;
613 reply
->time
= msg
->time
;
614 reply
->info
= msg
->info
;
616 if (msg
->data
) set_reply_data_ptr( msg
->data
, msg
->data_size
);
618 list_remove( &msg
->entry
);
619 /* put the result on the receiver result stack */
623 result
->recv_next
= queue
->recv_result
;
624 queue
->recv_result
= result
;
627 if (list_empty( &queue
->msg_list
[SEND_MESSAGE
] )) clear_queue_bits( queue
, QS_SENDMESSAGE
);
630 /* set the result of the current received message */
631 static void reply_message( struct msg_queue
*queue
, unsigned int result
,
632 unsigned int error
, int remove
, const void *data
, data_size_t len
)
634 struct message_result
*res
= queue
->recv_result
;
638 queue
->recv_result
= res
->recv_next
;
639 res
->receiver
= NULL
;
640 if (!res
->sender
) /* no one waiting for it */
648 if (len
&& (res
->data
= memdup( data
, len
))) res
->data_size
= len
;
649 store_message_result( res
, result
, error
);
653 /* retrieve a posted message */
654 static int get_posted_message( struct msg_queue
*queue
, user_handle_t win
,
655 unsigned int first
, unsigned int last
, unsigned int flags
,
656 struct get_message_reply
*reply
)
660 /* check against the filters */
661 LIST_FOR_EACH_ENTRY( msg
, &queue
->msg_list
[POST_MESSAGE
], struct message
, entry
)
663 if (win
&& msg
->win
&& msg
->win
!= win
&& !is_child_window( win
, msg
->win
)) continue;
664 if (!check_msg_filter( msg
->msg
, first
, last
)) continue;
665 goto found
; /* found one */
669 /* return it to the app */
671 reply
->total
= msg
->data_size
;
672 if (msg
->data_size
> get_reply_max_size())
674 set_error( STATUS_BUFFER_OVERFLOW
);
677 reply
->type
= msg
->type
;
678 reply
->win
= msg
->win
;
679 reply
->msg
= msg
->msg
;
680 reply
->wparam
= msg
->wparam
;
681 reply
->lparam
= msg
->lparam
;
684 reply
->time
= msg
->time
;
685 reply
->info
= msg
->info
;
687 if (flags
& PM_REMOVE
)
691 set_reply_data_ptr( msg
->data
, msg
->data_size
);
695 remove_queue_message( queue
, msg
, POST_MESSAGE
);
697 else if (msg
->data
) set_reply_data( msg
->data
, msg
->data_size
);
702 static int get_quit_message( struct msg_queue
*queue
, unsigned int flags
,
703 struct get_message_reply
*reply
)
705 if (queue
->quit_message
)
708 reply
->type
= MSG_POSTED
;
710 reply
->msg
= WM_QUIT
;
711 reply
->wparam
= queue
->exit_code
;
715 reply
->time
= get_tick_count();
718 if (flags
& PM_REMOVE
)
720 queue
->quit_message
= 0;
721 if (list_empty( &queue
->msg_list
[POST_MESSAGE
] ))
722 clear_queue_bits( queue
, QS_POSTMESSAGE
|QS_ALLPOSTMESSAGE
);
730 /* empty a message list and free all the messages */
731 static void empty_msg_list( struct list
*list
)
735 while ((ptr
= list_head( list
)) != NULL
)
737 struct message
*msg
= LIST_ENTRY( ptr
, struct message
, entry
);
738 list_remove( &msg
->entry
);
743 /* cleanup all pending results when deleting a queue */
744 static void cleanup_results( struct msg_queue
*queue
)
748 while ((entry
= list_head( &queue
->send_result
)) != NULL
)
750 remove_result_from_sender( LIST_ENTRY( entry
, struct message_result
, sender_entry
) );
753 while ((entry
= list_head( &queue
->callback_result
)) != NULL
)
755 remove_result_from_sender( LIST_ENTRY( entry
, struct message_result
, sender_entry
) );
758 while (queue
->recv_result
)
759 reply_message( queue
, 0, STATUS_ACCESS_DENIED
/*FIXME*/, 1, NULL
, 0 );
762 /* check if the thread owning the queue is hung (not checking for messages) */
763 static int is_queue_hung( struct msg_queue
*queue
)
765 struct wait_queue_entry
*entry
;
767 if (current_time
.tv_sec
- queue
->last_get_msg
.tv_sec
<= 5)
768 return 0; /* less than 5 seconds since last get message -> not hung */
770 LIST_FOR_EACH_ENTRY( entry
, &queue
->obj
.wait_queue
, struct wait_queue_entry
, entry
)
772 if (entry
->thread
->queue
== queue
)
773 return 0; /* thread is waiting on queue -> not hung */
778 static int msg_queue_add_queue( struct object
*obj
, struct wait_queue_entry
*entry
)
780 struct msg_queue
*queue
= (struct msg_queue
*)obj
;
781 struct process
*process
= entry
->thread
->process
;
783 /* a thread can only wait on its own queue */
784 if (entry
->thread
->queue
!= queue
)
786 set_error( STATUS_ACCESS_DENIED
);
789 /* if waiting on the main process queue, set the idle event */
790 if (process
->queue
== queue
)
792 if (process
->idle_event
) set_event( process
->idle_event
);
794 if (queue
->fd
&& list_empty( &obj
->wait_queue
)) /* first on the queue */
795 set_fd_events( queue
->fd
, POLLIN
);
796 add_queue( obj
, entry
);
800 static void msg_queue_remove_queue(struct object
*obj
, struct wait_queue_entry
*entry
)
802 struct msg_queue
*queue
= (struct msg_queue
*)obj
;
803 struct process
*process
= entry
->thread
->process
;
805 remove_queue( obj
, entry
);
806 if (queue
->fd
&& list_empty( &obj
->wait_queue
)) /* last on the queue is gone */
807 set_fd_events( queue
->fd
, 0 );
809 assert( entry
->thread
->queue
== queue
);
811 /* if waiting on the main process queue, reset the idle event */
812 if (process
->queue
== queue
)
814 if (process
->idle_event
) reset_event( process
->idle_event
);
818 static void msg_queue_dump( struct object
*obj
, int verbose
)
820 struct msg_queue
*queue
= (struct msg_queue
*)obj
;
821 fprintf( stderr
, "Msg queue bits=%x mask=%x\n",
822 queue
->wake_bits
, queue
->wake_mask
);
825 static int msg_queue_signaled( struct object
*obj
, struct thread
*thread
)
827 struct msg_queue
*queue
= (struct msg_queue
*)obj
;
832 if ((ret
= check_fd_events( queue
->fd
, POLLIN
)))
833 /* stop waiting on select() if we are signaled */
834 set_fd_events( queue
->fd
, 0 );
835 else if (!list_empty( &obj
->wait_queue
))
836 /* restart waiting on poll() if we are no longer signaled */
837 set_fd_events( queue
->fd
, POLLIN
);
839 return ret
|| is_signaled( queue
);
842 static int msg_queue_satisfied( struct object
*obj
, struct thread
*thread
)
844 struct msg_queue
*queue
= (struct msg_queue
*)obj
;
845 queue
->wake_mask
= 0;
846 queue
->changed_mask
= 0;
847 return 0; /* Not abandoned */
850 static void msg_queue_destroy( struct object
*obj
)
852 struct msg_queue
*queue
= (struct msg_queue
*)obj
;
856 cleanup_results( queue
);
857 for (i
= 0; i
< NB_MSG_KINDS
; i
++) empty_msg_list( &queue
->msg_list
[i
] );
859 while ((ptr
= list_head( &queue
->pending_timers
)))
861 struct timer
*timer
= LIST_ENTRY( ptr
, struct timer
, entry
);
862 list_remove( &timer
->entry
);
865 while ((ptr
= list_head( &queue
->expired_timers
)))
867 struct timer
*timer
= LIST_ENTRY( ptr
, struct timer
, entry
);
868 list_remove( &timer
->entry
);
871 if (queue
->timeout
) remove_timeout_user( queue
->timeout
);
872 if (queue
->input
) release_object( queue
->input
);
873 if (queue
->hooks
) release_object( queue
->hooks
);
874 if (queue
->fd
) release_object( queue
->fd
);
877 static void msg_queue_poll_event( struct fd
*fd
, int event
)
879 struct msg_queue
*queue
= get_fd_user( fd
);
880 assert( queue
->obj
.ops
== &msg_queue_ops
);
882 if (event
& (POLLERR
| POLLHUP
)) set_fd_events( fd
, -1 );
883 wake_up( &queue
->obj
, 0 );
886 static void thread_input_dump( struct object
*obj
, int verbose
)
888 struct thread_input
*input
= (struct thread_input
*)obj
;
889 fprintf( stderr
, "Thread input focus=%p capture=%p active=%p\n",
890 input
->focus
, input
->capture
, input
->active
);
893 static void thread_input_destroy( struct object
*obj
)
895 struct thread_input
*input
= (struct thread_input
*)obj
;
897 if (foreground_input
== input
) foreground_input
= NULL
;
898 empty_msg_list( &input
->msg_list
);
899 if (input
->desktop
) release_object( input
->desktop
);
902 /* fix the thread input data when a window is destroyed */
903 static inline void thread_input_cleanup_window( struct msg_queue
*queue
, user_handle_t window
)
905 struct thread_input
*input
= queue
->input
;
907 if (window
== input
->focus
) input
->focus
= 0;
908 if (window
== input
->capture
) input
->capture
= 0;
909 if (window
== input
->active
) input
->active
= 0;
910 if (window
== input
->menu_owner
) input
->menu_owner
= 0;
911 if (window
== input
->move_size
) input
->move_size
= 0;
912 if (window
== input
->caret
) set_caret_window( input
, 0 );
915 /* check if the specified window can be set in the input data of a given queue */
916 static int check_queue_input_window( struct msg_queue
*queue
, user_handle_t window
)
918 struct thread
*thread
;
921 if (!window
) return 1; /* we can always clear the data */
923 if ((thread
= get_window_thread( window
)))
925 ret
= (queue
->input
== thread
->queue
->input
);
926 if (!ret
) set_error( STATUS_ACCESS_DENIED
);
927 release_object( thread
);
929 else set_error( STATUS_INVALID_HANDLE
);
934 /* make sure the specified thread has a queue */
935 int init_thread_queue( struct thread
*thread
)
937 if (thread
->queue
) return 1;
938 return (create_msg_queue( thread
, NULL
) != NULL
);
941 /* attach two thread input data structures */
942 int attach_thread_input( struct thread
*thread_from
, struct thread
*thread_to
)
944 struct desktop
*desktop
;
945 struct thread_input
*input
;
947 if (!thread_to
->queue
&& !(thread_to
->queue
= create_msg_queue( thread_to
, NULL
))) return 0;
948 if (!(desktop
= get_thread_desktop( thread_from
, 0 ))) return 0;
949 input
= (struct thread_input
*)grab_object( thread_to
->queue
->input
);
950 if (input
->desktop
!= desktop
)
952 set_error( STATUS_ACCESS_DENIED
);
953 release_object( input
);
954 release_object( desktop
);
957 release_object( desktop
);
959 if (thread_from
->queue
)
961 release_thread_input( thread_from
);
962 thread_from
->queue
->input
= input
;
966 if (!(thread_from
->queue
= create_msg_queue( thread_from
, input
))) return 0;
968 memset( input
->keystate
, 0, sizeof(input
->keystate
) );
972 /* detach two thread input data structures */
973 void detach_thread_input( struct thread
*thread_from
)
975 struct thread_input
*input
;
977 if ((input
= create_thread_input( thread_from
)))
979 release_thread_input( thread_from
);
980 thread_from
->queue
->input
= input
;
985 /* set the next timer to expire */
986 static void set_next_timer( struct msg_queue
*queue
)
992 remove_timeout_user( queue
->timeout
);
993 queue
->timeout
= NULL
;
995 if ((ptr
= list_head( &queue
->pending_timers
)))
997 struct timer
*timer
= LIST_ENTRY( ptr
, struct timer
, entry
);
998 queue
->timeout
= add_timeout_user( &timer
->when
, timer_callback
, queue
);
1000 /* set/clear QS_TIMER bit */
1001 if (list_empty( &queue
->expired_timers
))
1002 clear_queue_bits( queue
, QS_TIMER
);
1004 set_queue_bits( queue
, QS_TIMER
);
1007 /* find a timer from its window and id */
1008 static struct timer
*find_timer( struct msg_queue
*queue
, user_handle_t win
,
1009 unsigned int msg
, unsigned long id
)
1013 /* we need to search both lists */
1015 LIST_FOR_EACH( ptr
, &queue
->pending_timers
)
1017 struct timer
*timer
= LIST_ENTRY( ptr
, struct timer
, entry
);
1018 if (timer
->win
== win
&& timer
->msg
== msg
&& timer
->id
== id
) return timer
;
1020 LIST_FOR_EACH( ptr
, &queue
->expired_timers
)
1022 struct timer
*timer
= LIST_ENTRY( ptr
, struct timer
, entry
);
1023 if (timer
->win
== win
&& timer
->msg
== msg
&& timer
->id
== id
) return timer
;
1028 /* callback for the next timer expiration */
1029 static void timer_callback( void *private )
1031 struct msg_queue
*queue
= private;
1034 queue
->timeout
= NULL
;
1035 /* move on to the next timer */
1036 ptr
= list_head( &queue
->pending_timers
);
1038 list_add_tail( &queue
->expired_timers
, ptr
);
1039 set_next_timer( queue
);
1042 /* link a timer at its rightful place in the queue list */
1043 static void link_timer( struct msg_queue
*queue
, struct timer
*timer
)
1047 for (ptr
= queue
->pending_timers
.next
; ptr
!= &queue
->pending_timers
; ptr
= ptr
->next
)
1049 struct timer
*t
= LIST_ENTRY( ptr
, struct timer
, entry
);
1050 if (!time_before( &t
->when
, &timer
->when
)) break;
1052 list_add_before( ptr
, &timer
->entry
);
1055 /* remove a timer from the queue timer list and free it */
1056 static void free_timer( struct msg_queue
*queue
, struct timer
*timer
)
1058 list_remove( &timer
->entry
);
1060 set_next_timer( queue
);
1063 /* restart an expired timer */
1064 static void restart_timer( struct msg_queue
*queue
, struct timer
*timer
)
1066 list_remove( &timer
->entry
);
1067 while (!time_before( ¤t_time
, &timer
->when
)) add_timeout( &timer
->when
, timer
->rate
);
1068 link_timer( queue
, timer
);
1069 set_next_timer( queue
);
1072 /* find an expired timer matching the filtering parameters */
1073 static struct timer
*find_expired_timer( struct msg_queue
*queue
, user_handle_t win
,
1074 unsigned int get_first
, unsigned int get_last
,
1079 LIST_FOR_EACH( ptr
, &queue
->expired_timers
)
1081 struct timer
*timer
= LIST_ENTRY( ptr
, struct timer
, entry
);
1082 if (win
&& timer
->win
!= win
) continue;
1083 if (check_msg_filter( timer
->msg
, get_first
, get_last
))
1085 if (remove
) restart_timer( queue
, timer
);
1093 static struct timer
*set_timer( struct msg_queue
*queue
, unsigned int rate
)
1095 struct timer
*timer
= mem_alloc( sizeof(*timer
) );
1098 timer
->rate
= max( rate
, 1 );
1099 timer
->when
= current_time
;
1100 add_timeout( &timer
->when
, rate
);
1101 link_timer( queue
, timer
);
1102 /* check if we replaced the next timer */
1103 if (list_head( &queue
->pending_timers
) == &timer
->entry
) set_next_timer( queue
);
1108 /* change the input key state for a given key */
1109 static void set_input_key_state( struct thread_input
*input
, unsigned char key
, int down
)
1113 if (!(input
->keystate
[key
] & 0x80)) input
->keystate
[key
] ^= 0x01;
1114 input
->keystate
[key
] |= 0x80;
1116 else input
->keystate
[key
] &= ~0x80;
1119 /* update the input key state for a keyboard message */
1120 static void update_input_key_state( struct thread_input
*input
, const struct message
*msg
)
1123 int down
= 0, extended
;
1127 case WM_LBUTTONDOWN
:
1131 set_input_key_state( input
, VK_LBUTTON
, down
);
1133 case WM_MBUTTONDOWN
:
1137 set_input_key_state( input
, VK_MBUTTON
, down
);
1139 case WM_RBUTTONDOWN
:
1143 set_input_key_state( input
, VK_RBUTTON
, down
);
1145 case WM_XBUTTONDOWN
:
1149 if (msg
->wparam
== XBUTTON1
) set_input_key_state( input
, VK_XBUTTON1
, down
);
1150 else if (msg
->wparam
== XBUTTON2
) set_input_key_state( input
, VK_XBUTTON2
, down
);
1158 key
= (unsigned char)msg
->wparam
;
1159 extended
= ((msg
->lparam
>> 16) & KF_EXTENDED
) != 0;
1160 set_input_key_state( input
, key
, down
);
1164 set_input_key_state( input
, extended
? VK_RSHIFT
: VK_LSHIFT
, down
);
1167 set_input_key_state( input
, extended
? VK_RCONTROL
: VK_LCONTROL
, down
);
1170 set_input_key_state( input
, extended
? VK_RMENU
: VK_LMENU
, down
);
1174 set_input_key_state( input
, VK_CONTROL
, down
);
1178 set_input_key_state( input
, VK_MENU
, down
);
1182 set_input_key_state( input
, VK_SHIFT
, down
);
1189 /* release the hardware message currently being processed by the given thread */
1190 static void release_hardware_message( struct msg_queue
*queue
, unsigned int hw_id
,
1191 int remove
, user_handle_t new_win
)
1193 struct thread_input
*input
= queue
->input
;
1194 struct message
*msg
;
1196 LIST_FOR_EACH_ENTRY( msg
, &input
->msg_list
, struct message
, entry
)
1198 if (msg
->unique_id
== hw_id
) break;
1200 if (&msg
->entry
== &input
->msg_list
) return; /* not found */
1202 /* clear the queue bit for that message */
1203 if (remove
|| new_win
)
1205 struct message
*other
;
1208 clr_bit
= get_hardware_msg_bit( msg
);
1209 LIST_FOR_EACH_ENTRY( other
, &input
->msg_list
, struct message
, entry
)
1211 if (other
!= msg
&& get_hardware_msg_bit( other
) == clr_bit
)
1217 if (clr_bit
) clear_queue_bits( queue
, clr_bit
);
1220 if (new_win
) /* set the new window */
1222 struct thread
*owner
= get_window_thread( new_win
);
1225 if (owner
->queue
->input
== input
)
1228 set_queue_bits( owner
->queue
, get_hardware_msg_bit( msg
));
1231 release_object( owner
);
1236 update_input_key_state( input
, msg
);
1237 list_remove( &msg
->entry
);
1238 free_message( msg
);
1242 /* find the window that should receive a given hardware message */
1243 static user_handle_t
find_hardware_message_window( struct thread_input
*input
, struct message
*msg
,
1244 unsigned int *msg_code
)
1246 user_handle_t win
= 0;
1248 *msg_code
= msg
->msg
;
1249 if (is_keyboard_msg( msg
))
1251 if (input
&& !(win
= input
->focus
))
1253 win
= input
->active
;
1254 if (*msg_code
< WM_SYSKEYDOWN
) *msg_code
+= WM_SYSKEYDOWN
- WM_KEYDOWN
;
1257 else /* mouse message */
1259 if (!input
|| !(win
= input
->capture
))
1261 if (!(win
= msg
->win
) || !is_window_visible( win
))
1263 if (input
) win
= window_from_point( input
->desktop
, msg
->x
, msg
->y
);
1270 /* queue a hardware message into a given thread input */
1271 static void queue_hardware_message( struct msg_queue
*queue
, struct message
*msg
)
1274 struct thread
*thread
;
1275 struct thread_input
*input
= queue
? queue
->input
: foreground_input
;
1276 unsigned int msg_code
;
1278 last_input_time
= get_tick_count();
1279 win
= find_hardware_message_window( input
, msg
, &msg_code
);
1280 if (!win
|| !(thread
= get_window_thread(win
)))
1282 if (input
) update_input_key_state( input
, msg
);
1286 input
= thread
->queue
->input
;
1288 if (msg
->msg
== WM_MOUSEMOVE
&& merge_message( input
, msg
)) free( msg
);
1291 msg
->unique_id
= 0; /* will be set once we return it to the app */
1292 list_add_tail( &input
->msg_list
, &msg
->entry
);
1293 set_queue_bits( thread
->queue
, get_hardware_msg_bit(msg
) );
1295 release_object( thread
);
1298 /* check message filter for a hardware message */
1299 static int check_hw_message_filter( user_handle_t win
, unsigned int msg_code
,
1300 user_handle_t filter_win
, unsigned int first
, unsigned int last
)
1302 if (msg_code
>= WM_KEYFIRST
&& msg_code
<= WM_KEYLAST
)
1304 /* we can only test the window for a keyboard message since the
1305 * dest window for a mouse message depends on hittest */
1306 if (filter_win
&& win
!= filter_win
&& !is_child_window( filter_win
, win
))
1308 /* the message code is final for a keyboard message, we can simply check it */
1309 return check_msg_filter( msg_code
, first
, last
);
1311 else /* mouse message */
1313 /* we need to check all possible values that the message can have in the end */
1315 if (check_msg_filter( msg_code
, first
, last
)) return 1;
1316 if (msg_code
== WM_MOUSEWHEEL
) return 0; /* no other possible value for this one */
1318 /* all other messages can become non-client messages */
1319 if (check_msg_filter( msg_code
+ (WM_NCMOUSEFIRST
- WM_MOUSEFIRST
), first
, last
)) return 1;
1321 /* clicks can become double-clicks or non-client double-clicks */
1322 if (msg_code
== WM_LBUTTONDOWN
|| msg_code
== WM_MBUTTONDOWN
||
1323 msg_code
== WM_RBUTTONDOWN
|| msg_code
== WM_XBUTTONDOWN
)
1325 if (check_msg_filter( msg_code
+ (WM_LBUTTONDBLCLK
- WM_LBUTTONDOWN
), first
, last
)) return 1;
1326 if (check_msg_filter( msg_code
+ (WM_NCLBUTTONDBLCLK
- WM_LBUTTONDOWN
), first
, last
)) return 1;
1333 /* find a hardware message for the given queue */
1334 static int get_hardware_message( struct thread
*thread
, unsigned int hw_id
, user_handle_t filter_win
,
1335 unsigned int first
, unsigned int last
, struct get_message_reply
*reply
)
1337 struct thread_input
*input
= thread
->queue
->input
;
1338 struct thread
*win_thread
;
1341 int clear_bits
, got_one
= 0;
1342 unsigned int msg_code
;
1344 ptr
= list_head( &input
->msg_list
);
1349 struct message
*msg
= LIST_ENTRY( ptr
, struct message
, entry
);
1350 if (msg
->unique_id
== hw_id
) break;
1351 ptr
= list_next( &input
->msg_list
, ptr
);
1353 if (!ptr
) ptr
= list_head( &input
->msg_list
);
1354 else ptr
= list_next( &input
->msg_list
, ptr
); /* start from the next one */
1357 if (ptr
== list_head( &input
->msg_list
))
1358 clear_bits
= QS_KEY
| QS_MOUSEMOVE
| QS_MOUSEBUTTON
;
1360 clear_bits
= 0; /* don't clear bits if we don't go through the whole list */
1364 struct message
*msg
= LIST_ENTRY( ptr
, struct message
, entry
);
1365 ptr
= list_next( &input
->msg_list
, ptr
);
1366 win
= find_hardware_message_window( input
, msg
, &msg_code
);
1367 if (!win
|| !(win_thread
= get_window_thread( win
)))
1369 /* no window at all, remove it */
1370 update_input_key_state( input
, msg
);
1371 list_remove( &msg
->entry
);
1372 free_message( msg
);
1375 if (win_thread
!= thread
)
1377 if (win_thread
->queue
->input
== input
)
1379 /* wake the other thread */
1380 set_queue_bits( win_thread
->queue
, get_hardware_msg_bit(msg
) );
1385 /* for another thread input, drop it */
1386 update_input_key_state( input
, msg
);
1387 list_remove( &msg
->entry
);
1388 free_message( msg
);
1390 release_object( win_thread
);
1393 release_object( win_thread
);
1395 /* if we already got a message for another thread, or if it doesn't
1396 * match the filter we skip it */
1397 if (got_one
|| !check_hw_message_filter( win
, msg_code
, filter_win
, first
, last
))
1399 clear_bits
&= ~get_hardware_msg_bit( msg
);
1402 /* now we can return it */
1403 if (!msg
->unique_id
) msg
->unique_id
= get_unique_id();
1404 reply
->type
= MSG_HARDWARE
;
1406 reply
->msg
= msg_code
;
1407 reply
->wparam
= msg
->wparam
;
1408 reply
->lparam
= msg
->lparam
;
1411 reply
->time
= msg
->time
;
1412 reply
->info
= msg
->info
;
1413 reply
->hw_id
= msg
->unique_id
;
1416 /* nothing found, clear the hardware queue bits */
1417 clear_queue_bits( thread
->queue
, clear_bits
);
1421 /* increment (or decrement if 'incr' is negative) the queue paint count */
1422 void inc_queue_paint_count( struct thread
*thread
, int incr
)
1424 struct msg_queue
*queue
= thread
->queue
;
1428 if ((queue
->paint_count
+= incr
) < 0) queue
->paint_count
= 0;
1430 if (queue
->paint_count
)
1431 set_queue_bits( queue
, QS_PAINT
);
1433 clear_queue_bits( queue
, QS_PAINT
);
1437 /* remove all messages and timers belonging to a certain window */
1438 void queue_cleanup_window( struct thread
*thread
, user_handle_t win
)
1440 struct msg_queue
*queue
= thread
->queue
;
1448 ptr
= list_head( &queue
->pending_timers
);
1451 struct list
*next
= list_next( &queue
->pending_timers
, ptr
);
1452 struct timer
*timer
= LIST_ENTRY( ptr
, struct timer
, entry
);
1453 if (timer
->win
== win
) free_timer( queue
, timer
);
1456 ptr
= list_head( &queue
->expired_timers
);
1459 struct list
*next
= list_next( &queue
->expired_timers
, ptr
);
1460 struct timer
*timer
= LIST_ENTRY( ptr
, struct timer
, entry
);
1461 if (timer
->win
== win
) free_timer( queue
, timer
);
1465 /* remove messages */
1466 for (i
= 0; i
< NB_MSG_KINDS
; i
++)
1468 struct list
*ptr
, *next
;
1470 LIST_FOR_EACH_SAFE( ptr
, next
, &queue
->msg_list
[i
] )
1472 struct message
*msg
= LIST_ENTRY( ptr
, struct message
, entry
);
1473 if (msg
->win
== win
) remove_queue_message( queue
, msg
, i
);
1477 thread_input_cleanup_window( queue
, win
);
1480 /* post a message to a window; used by socket handling */
1481 void post_message( user_handle_t win
, unsigned int message
,
1482 unsigned long wparam
, unsigned long lparam
)
1484 struct message
*msg
;
1485 struct thread
*thread
= get_window_thread( win
);
1487 if (!thread
) return;
1489 if (thread
->queue
&& (msg
= mem_alloc( sizeof(*msg
) )))
1491 msg
->type
= MSG_POSTED
;
1492 msg
->win
= get_user_full_handle( win
);
1494 msg
->wparam
= wparam
;
1495 msg
->lparam
= lparam
;
1496 msg
->time
= get_tick_count();
1504 list_add_tail( &thread
->queue
->msg_list
[POST_MESSAGE
], &msg
->entry
);
1505 set_queue_bits( thread
->queue
, QS_POSTMESSAGE
|QS_ALLPOSTMESSAGE
);
1507 release_object( thread
);
1510 /* post a win event */
1511 void post_win_event( struct thread
*thread
, unsigned int event
,
1512 user_handle_t win
, unsigned int object_id
,
1513 unsigned int child_id
, void *hook_proc
,
1514 const WCHAR
*module
, data_size_t module_size
,
1517 struct message
*msg
;
1519 if (thread
->queue
&& (msg
= mem_alloc( sizeof(*msg
) )))
1521 struct winevent_msg_data
*data
;
1523 msg
->type
= MSG_WINEVENT
;
1524 msg
->win
= get_user_full_handle( win
);
1526 msg
->wparam
= object_id
;
1527 msg
->lparam
= child_id
;
1528 msg
->time
= get_tick_count();
1534 if ((data
= malloc( sizeof(*data
) + module_size
)))
1537 data
->tid
= get_thread_id( current
);
1538 data
->hook_proc
= hook_proc
;
1539 memcpy( data
+ 1, module
, module_size
);
1542 msg
->data_size
= sizeof(*data
) + module_size
;
1544 if (debug_level
> 1)
1545 fprintf( stderr
, "post_win_event: tid %04x event %04x win %p object_id %d child_id %d\n",
1546 get_thread_id(thread
), event
, win
, object_id
, child_id
);
1547 list_add_tail( &thread
->queue
->msg_list
[SEND_MESSAGE
], &msg
->entry
);
1548 set_queue_bits( thread
->queue
, QS_SENDMESSAGE
);
1555 /* get the message queue of the current thread */
1556 DECL_HANDLER(get_msg_queue
)
1558 struct msg_queue
*queue
= get_current_queue();
1561 if (queue
) reply
->handle
= alloc_handle( current
->process
, queue
, SYNCHRONIZE
, 0 );
1565 /* set the file descriptor associated to the current thread queue */
1566 DECL_HANDLER(set_queue_fd
)
1568 struct msg_queue
*queue
= get_current_queue();
1572 if (queue
->fd
) /* fd can only be set once */
1574 set_error( STATUS_ACCESS_DENIED
);
1577 if (!(file
= get_file_obj( current
->process
, req
->handle
, SYNCHRONIZE
))) return;
1579 if ((unix_fd
= get_file_unix_fd( file
)) != -1)
1581 if ((unix_fd
= dup( unix_fd
)) != -1)
1582 queue
->fd
= create_anonymous_fd( &msg_queue_fd_ops
, unix_fd
, &queue
->obj
);
1586 release_object( file
);
1590 /* set the current message queue wakeup mask */
1591 DECL_HANDLER(set_queue_mask
)
1593 struct msg_queue
*queue
= get_current_queue();
1597 queue
->wake_mask
= req
->wake_mask
;
1598 queue
->changed_mask
= req
->changed_mask
;
1599 reply
->wake_bits
= queue
->wake_bits
;
1600 reply
->changed_bits
= queue
->changed_bits
;
1601 if (is_signaled( queue
))
1603 /* if skip wait is set, do what would have been done in the subsequent wait */
1604 if (req
->skip_wait
) msg_queue_satisfied( &queue
->obj
, current
);
1605 else wake_up( &queue
->obj
, 0 );
1611 /* get the current message queue status */
1612 DECL_HANDLER(get_queue_status
)
1614 struct msg_queue
*queue
= current
->queue
;
1617 reply
->wake_bits
= queue
->wake_bits
;
1618 reply
->changed_bits
= queue
->changed_bits
;
1619 if (req
->clear
) queue
->changed_bits
= 0;
1621 else reply
->wake_bits
= reply
->changed_bits
= 0;
1625 /* send a message to a thread queue */
1626 DECL_HANDLER(send_message
)
1628 struct message
*msg
;
1629 struct msg_queue
*send_queue
= get_current_queue();
1630 struct msg_queue
*recv_queue
= NULL
;
1631 struct thread
*thread
= NULL
;
1633 if (!(thread
= get_thread_from_id( req
->id
))) return;
1635 if (!(recv_queue
= thread
->queue
))
1637 set_error( STATUS_INVALID_PARAMETER
);
1638 release_object( thread
);
1641 if ((req
->flags
& SEND_MSG_ABORT_IF_HUNG
) && is_queue_hung(recv_queue
))
1643 set_error( STATUS_TIMEOUT
);
1644 release_object( thread
);
1648 if ((msg
= mem_alloc( sizeof(*msg
) )))
1650 msg
->type
= req
->type
;
1651 msg
->win
= get_user_full_handle( req
->win
);
1652 msg
->msg
= req
->msg
;
1653 msg
->wparam
= req
->wparam
;
1654 msg
->lparam
= req
->lparam
;
1655 msg
->time
= get_tick_count();
1661 msg
->data_size
= get_req_data_size();
1663 if (msg
->data_size
&& !(msg
->data
= memdup( get_req_data(), msg
->data_size
)))
1666 release_object( thread
);
1672 case MSG_OTHER_PROCESS
:
1676 if (!(msg
->result
= alloc_message_result( send_queue
, recv_queue
, msg
, req
->timeout
)))
1678 free_message( msg
);
1683 list_add_tail( &recv_queue
->msg_list
[SEND_MESSAGE
], &msg
->entry
);
1684 set_queue_bits( recv_queue
, QS_SENDMESSAGE
);
1687 list_add_tail( &recv_queue
->msg_list
[POST_MESSAGE
], &msg
->entry
);
1688 set_queue_bits( recv_queue
, QS_POSTMESSAGE
|QS_ALLPOSTMESSAGE
);
1690 case MSG_HARDWARE
: /* should use send_hardware_message instead */
1691 case MSG_CALLBACK_RESULT
: /* cannot send this one */
1693 set_error( STATUS_INVALID_PARAMETER
);
1698 release_object( thread
);
1701 /* send a hardware message to a thread queue */
1702 DECL_HANDLER(send_hardware_message
)
1704 struct message
*msg
;
1705 struct msg_queue
*recv_queue
= NULL
;
1706 struct thread
*thread
= NULL
;
1710 if (!(thread
= get_thread_from_id( req
->id
))) return;
1713 if (thread
&& !(recv_queue
= thread
->queue
))
1715 set_error( STATUS_INVALID_PARAMETER
);
1716 release_object( thread
);
1720 if ((msg
= mem_alloc( sizeof(*msg
) )))
1722 msg
->type
= MSG_HARDWARE
;
1723 msg
->win
= get_user_full_handle( req
->win
);
1724 msg
->msg
= req
->msg
;
1725 msg
->wparam
= req
->wparam
;
1726 msg
->lparam
= req
->lparam
;
1727 msg
->time
= req
->time
;
1730 msg
->info
= req
->info
;
1734 queue_hardware_message( recv_queue
, msg
);
1736 if (thread
) release_object( thread
);
1739 /* post a quit message to the current queue */
1740 DECL_HANDLER(post_quit_message
)
1742 struct msg_queue
*queue
= get_current_queue();
1747 queue
->quit_message
= 1;
1748 queue
->exit_code
= req
->exit_code
;
1749 set_queue_bits( queue
, QS_POSTMESSAGE
|QS_ALLPOSTMESSAGE
);
1752 /* get a message from the current queue */
1753 DECL_HANDLER(get_message
)
1755 struct timer
*timer
;
1757 struct msg_queue
*queue
= get_current_queue();
1758 user_handle_t get_win
= get_user_full_handle( req
->get_win
);
1759 unsigned int filter
= req
->flags
>> 16;
1761 reply
->active_hooks
= get_active_hooks();
1764 queue
->last_get_msg
= current_time
;
1765 if (!filter
) filter
= QS_ALLINPUT
;
1767 /* first check for sent messages */
1768 if ((ptr
= list_head( &queue
->msg_list
[SEND_MESSAGE
] )))
1770 struct message
*msg
= LIST_ENTRY( ptr
, struct message
, entry
);
1771 receive_message( queue
, msg
, reply
);
1775 /* clear changed bits so we can wait on them if we don't find a message */
1776 if (filter
& QS_POSTMESSAGE
)
1778 queue
->changed_bits
&= ~(QS_POSTMESSAGE
| QS_HOTKEY
| QS_TIMER
);
1779 if (req
->get_first
== 0 && req
->get_last
== ~0U) queue
->changed_bits
&= ~QS_ALLPOSTMESSAGE
;
1781 if (filter
& QS_INPUT
) queue
->changed_bits
&= ~QS_INPUT
;
1782 if (filter
& QS_PAINT
) queue
->changed_bits
&= ~QS_PAINT
;
1784 /* then check for posted messages */
1785 if ((filter
& QS_POSTMESSAGE
) &&
1786 get_posted_message( queue
, get_win
, req
->get_first
, req
->get_last
, req
->flags
, reply
))
1789 /* only check for quit messages if not posted messages pending.
1790 * note: the quit message isn't filtered */
1791 if (get_quit_message( queue
, req
->flags
, reply
))
1794 /* then check for any raw hardware message */
1795 if ((filter
& QS_INPUT
) &&
1796 filter_contains_hw_range( req
->get_first
, req
->get_last
) &&
1797 get_hardware_message( current
, req
->hw_id
, get_win
, req
->get_first
, req
->get_last
, reply
))
1800 /* now check for WM_PAINT */
1801 if ((filter
& QS_PAINT
) &&
1802 queue
->paint_count
&&
1803 check_msg_filter( WM_PAINT
, req
->get_first
, req
->get_last
) &&
1804 (reply
->win
= find_window_to_repaint( get_win
, current
)))
1806 reply
->type
= MSG_POSTED
;
1807 reply
->msg
= WM_PAINT
;
1812 reply
->time
= get_tick_count();
1817 /* now check for timer */
1818 if ((filter
& QS_TIMER
) &&
1819 (timer
= find_expired_timer( queue
, get_win
, req
->get_first
,
1820 req
->get_last
, (req
->flags
& PM_REMOVE
) )))
1822 reply
->type
= MSG_POSTED
;
1823 reply
->win
= timer
->win
;
1824 reply
->msg
= timer
->msg
;
1825 reply
->wparam
= timer
->id
;
1826 reply
->lparam
= timer
->lparam
;
1829 reply
->time
= get_tick_count();
1834 set_error( STATUS_PENDING
); /* FIXME */
1838 /* reply to a sent message */
1839 DECL_HANDLER(reply_message
)
1841 if (!current
->queue
) set_error( STATUS_ACCESS_DENIED
);
1842 else if (current
->queue
->recv_result
)
1843 reply_message( current
->queue
, req
->result
, 0, req
->remove
,
1844 get_req_data(), get_req_data_size() );
1848 /* accept the current hardware message */
1849 DECL_HANDLER(accept_hardware_message
)
1852 release_hardware_message( current
->queue
, req
->hw_id
, req
->remove
, req
->new_win
);
1854 set_error( STATUS_ACCESS_DENIED
);
1858 /* retrieve the reply for the last message sent */
1859 DECL_HANDLER(get_message_reply
)
1861 struct message_result
*result
;
1863 struct msg_queue
*queue
= current
->queue
;
1867 set_error( STATUS_PENDING
);
1870 if (!(entry
= list_head( &queue
->send_result
))) return; /* no reply ready */
1872 result
= LIST_ENTRY( entry
, struct message_result
, sender_entry
);
1873 if (result
->replied
|| req
->cancel
)
1875 if (result
->replied
)
1877 reply
->result
= result
->result
;
1878 set_error( result
->error
);
1881 data_size_t data_len
= min( result
->data_size
, get_reply_max_size() );
1882 set_reply_data_ptr( result
->data
, data_len
);
1883 result
->data
= NULL
;
1884 result
->data_size
= 0;
1887 remove_result_from_sender( result
);
1889 entry
= list_head( &queue
->send_result
);
1890 if (!entry
) clear_queue_bits( queue
, QS_SMRESULT
);
1893 result
= LIST_ENTRY( entry
, struct message_result
, sender_entry
);
1894 if (!result
->replied
) clear_queue_bits( queue
, QS_SMRESULT
);
1898 else set_error( STATUS_ACCESS_DENIED
);
1902 /* set a window timer */
1903 DECL_HANDLER(set_win_timer
)
1905 struct timer
*timer
;
1906 struct msg_queue
*queue
;
1907 struct thread
*thread
= NULL
;
1908 user_handle_t win
= 0;
1909 unsigned long id
= req
->id
;
1913 if (!(win
= get_user_full_handle( req
->win
)) || !(thread
= get_window_thread( win
)))
1915 set_error( STATUS_INVALID_HANDLE
);
1918 if (thread
->process
!= current
->process
)
1920 release_object( thread
);
1921 set_error( STATUS_ACCESS_DENIED
);
1924 queue
= thread
->queue
;
1925 /* remove it if it existed already */
1926 if ((timer
= find_timer( queue
, win
, req
->msg
, id
))) free_timer( queue
, timer
);
1930 queue
= get_current_queue();
1931 /* find a free id for it */
1934 id
= queue
->next_timer_id
;
1935 if (++queue
->next_timer_id
>= 0x10000) queue
->next_timer_id
= 1;
1937 while (find_timer( queue
, 0, req
->msg
, id
));
1940 if ((timer
= set_timer( queue
, req
->rate
)))
1943 timer
->msg
= req
->msg
;
1945 timer
->lparam
= req
->lparam
;
1948 if (thread
) release_object( thread
);
1951 /* kill a window timer */
1952 DECL_HANDLER(kill_win_timer
)
1954 struct timer
*timer
;
1955 struct thread
*thread
;
1956 user_handle_t win
= 0;
1960 if (!(win
= get_user_full_handle( req
->win
)) || !(thread
= get_window_thread( win
)))
1962 set_error( STATUS_INVALID_HANDLE
);
1965 if (thread
->process
!= current
->process
)
1967 release_object( thread
);
1968 set_error( STATUS_ACCESS_DENIED
);
1972 else thread
= (struct thread
*)grab_object( current
);
1974 if (thread
->queue
&& (timer
= find_timer( thread
->queue
, win
, req
->msg
, req
->id
)))
1975 free_timer( thread
->queue
, timer
);
1977 set_error( STATUS_INVALID_PARAMETER
);
1979 release_object( thread
);
1983 /* attach (or detach) thread inputs */
1984 DECL_HANDLER(attach_thread_input
)
1986 struct thread
*thread_from
= get_thread_from_id( req
->tid_from
);
1987 struct thread
*thread_to
= get_thread_from_id( req
->tid_to
);
1989 if (!thread_from
|| !thread_to
)
1991 if (thread_from
) release_object( thread_from
);
1992 if (thread_to
) release_object( thread_to
);
1995 if (thread_from
!= thread_to
)
1997 if (req
->attach
) attach_thread_input( thread_from
, thread_to
);
2000 if (thread_from
->queue
&& thread_to
->queue
&&
2001 thread_from
->queue
->input
== thread_to
->queue
->input
)
2002 detach_thread_input( thread_from
);
2004 set_error( STATUS_ACCESS_DENIED
);
2007 else set_error( STATUS_ACCESS_DENIED
);
2008 release_object( thread_from
);
2009 release_object( thread_to
);
2013 /* get thread input data */
2014 DECL_HANDLER(get_thread_input
)
2016 struct thread
*thread
= NULL
;
2017 struct thread_input
*input
;
2021 if (!(thread
= get_thread_from_id( req
->tid
))) return;
2022 input
= thread
->queue
? thread
->queue
->input
: NULL
;
2024 else input
= foreground_input
; /* get the foreground thread info */
2028 reply
->focus
= input
->focus
;
2029 reply
->capture
= input
->capture
;
2030 reply
->active
= input
->active
;
2031 reply
->menu_owner
= input
->menu_owner
;
2032 reply
->move_size
= input
->move_size
;
2033 reply
->caret
= input
->caret
;
2034 reply
->rect
= input
->caret_rect
;
2041 reply
->menu_owner
= 0;
2042 reply
->move_size
= 0;
2044 reply
->rect
.left
= reply
->rect
.top
= reply
->rect
.right
= reply
->rect
.bottom
= 0;
2046 /* foreground window is active window of foreground thread */
2047 reply
->foreground
= foreground_input
? foreground_input
->active
: 0;
2048 if (thread
) release_object( thread
);
2052 /* retrieve queue keyboard state for a given thread */
2053 DECL_HANDLER(get_key_state
)
2055 struct thread
*thread
;
2056 struct thread_input
*input
;
2058 if (!(thread
= get_thread_from_id( req
->tid
))) return;
2059 input
= thread
->queue
? thread
->queue
->input
: NULL
;
2062 if (req
->key
>= 0) reply
->state
= input
->keystate
[req
->key
& 0xff];
2063 set_reply_data( input
->keystate
, min( get_reply_max_size(), sizeof(input
->keystate
) ));
2065 release_object( thread
);
2069 /* set queue keyboard state for a given thread */
2070 DECL_HANDLER(set_key_state
)
2072 struct thread
*thread
= NULL
;
2073 struct thread_input
*input
;
2075 if (!(thread
= get_thread_from_id( req
->tid
))) return;
2076 input
= thread
->queue
? thread
->queue
->input
: NULL
;
2079 data_size_t size
= min( sizeof(input
->keystate
), get_req_data_size() );
2080 if (size
) memcpy( input
->keystate
, get_req_data(), size
);
2082 release_object( thread
);
2086 /* set the system foreground window */
2087 DECL_HANDLER(set_foreground_window
)
2089 struct thread
*thread
;
2090 struct msg_queue
*queue
= get_current_queue();
2092 reply
->previous
= foreground_input
? foreground_input
->active
: 0;
2093 reply
->send_msg_old
= (reply
->previous
&& foreground_input
!= queue
->input
);
2094 reply
->send_msg_new
= FALSE
;
2096 if (is_top_level_window( req
->handle
) &&
2097 ((thread
= get_window_thread( req
->handle
))))
2099 foreground_input
= thread
->queue
->input
;
2100 reply
->send_msg_new
= (foreground_input
!= queue
->input
);
2101 release_object( thread
);
2103 else set_win32_error( ERROR_INVALID_WINDOW_HANDLE
);
2107 /* set the current thread focus window */
2108 DECL_HANDLER(set_focus_window
)
2110 struct msg_queue
*queue
= get_current_queue();
2112 reply
->previous
= 0;
2113 if (queue
&& check_queue_input_window( queue
, req
->handle
))
2115 reply
->previous
= queue
->input
->focus
;
2116 queue
->input
->focus
= get_user_full_handle( req
->handle
);
2121 /* set the current thread active window */
2122 DECL_HANDLER(set_active_window
)
2124 struct msg_queue
*queue
= get_current_queue();
2126 reply
->previous
= 0;
2127 if (queue
&& check_queue_input_window( queue
, req
->handle
))
2129 if (!req
->handle
|| make_window_active( req
->handle
))
2131 reply
->previous
= queue
->input
->active
;
2132 queue
->input
->active
= get_user_full_handle( req
->handle
);
2134 else set_error( STATUS_INVALID_HANDLE
);
2139 /* set the current thread capture window */
2140 DECL_HANDLER(set_capture_window
)
2142 struct msg_queue
*queue
= get_current_queue();
2144 reply
->previous
= reply
->full_handle
= 0;
2145 if (queue
&& check_queue_input_window( queue
, req
->handle
))
2147 struct thread_input
*input
= queue
->input
;
2149 reply
->previous
= input
->capture
;
2150 input
->capture
= get_user_full_handle( req
->handle
);
2151 input
->menu_owner
= (req
->flags
& CAPTURE_MENU
) ? input
->capture
: 0;
2152 input
->move_size
= (req
->flags
& CAPTURE_MOVESIZE
) ? input
->capture
: 0;
2153 reply
->full_handle
= input
->capture
;
2158 /* Set the current thread caret window */
2159 DECL_HANDLER(set_caret_window
)
2161 struct msg_queue
*queue
= get_current_queue();
2163 reply
->previous
= 0;
2164 if (queue
&& check_queue_input_window( queue
, req
->handle
))
2166 struct thread_input
*input
= queue
->input
;
2168 reply
->previous
= input
->caret
;
2169 reply
->old_rect
= input
->caret_rect
;
2170 reply
->old_hide
= input
->caret_hide
;
2171 reply
->old_state
= input
->caret_state
;
2173 set_caret_window( input
, get_user_full_handle(req
->handle
) );
2174 input
->caret_rect
.right
= input
->caret_rect
.left
+ req
->width
;
2175 input
->caret_rect
.bottom
= input
->caret_rect
.top
+ req
->height
;
2180 /* Set the current thread caret information */
2181 DECL_HANDLER(set_caret_info
)
2183 struct msg_queue
*queue
= get_current_queue();
2184 struct thread_input
*input
;
2187 input
= queue
->input
;
2188 reply
->full_handle
= input
->caret
;
2189 reply
->old_rect
= input
->caret_rect
;
2190 reply
->old_hide
= input
->caret_hide
;
2191 reply
->old_state
= input
->caret_state
;
2193 if (req
->handle
&& get_user_full_handle(req
->handle
) != input
->caret
)
2195 set_error( STATUS_ACCESS_DENIED
);
2198 if (req
->flags
& SET_CARET_POS
)
2200 input
->caret_rect
.right
+= req
->x
- input
->caret_rect
.left
;
2201 input
->caret_rect
.bottom
+= req
->y
- input
->caret_rect
.top
;
2202 input
->caret_rect
.left
= req
->x
;
2203 input
->caret_rect
.top
= req
->y
;
2205 if (req
->flags
& SET_CARET_HIDE
)
2207 input
->caret_hide
+= req
->hide
;
2208 if (input
->caret_hide
< 0) input
->caret_hide
= 0;
2210 if (req
->flags
& SET_CARET_STATE
)
2212 if (req
->state
== -1) input
->caret_state
= !input
->caret_state
;
2213 else input
->caret_state
= !!req
->state
;
2218 /* get the time of the last input event */
2219 DECL_HANDLER(get_last_input_time
)
2221 reply
->time
= last_input_time
;