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
35 enum message_kind { SEND_MESSAGE, POST_MESSAGE, COOKED_HW_MESSAGE, RAW_HW_MESSAGE };
36 #define NB_MSG_KINDS (RAW_HW_MESSAGE+1)
41 struct message_result *send_next; /* next in sender list */
42 struct message_result *recv_next; /* next in receiver list */
43 struct msg_queue *sender; /* sender queue */
44 struct msg_queue *receiver; /* receiver queue */
45 int replied; /* has it been replied to? */
46 unsigned int result; /* reply result */
47 unsigned int error; /* error code to pass back to sender */
48 void *data; /* message reply data */
49 unsigned int data_size; /* size of message reply data */
50 struct timeout_user *timeout; /* result timeout */
55 struct message *next; /* next message in list */
56 struct message *prev; /* prev message in list */
57 enum message_type type; /* message type */
58 user_handle_t win; /* window handle */
59 unsigned int msg; /* message code */
60 unsigned int wparam; /* parameters */
61 unsigned int lparam; /* parameters */
62 int x; /* x position */
63 int y; /* y position */
64 unsigned int time; /* message time */
65 unsigned int info; /* extra info */
66 void *data; /* message data for sent messages */
67 unsigned int data_size; /* size of message data */
68 struct message_result *result; /* result in sender queue */
73 struct message *first; /* head of list */
74 struct message *last; /* tail of list */
79 struct timer *next; /* next timer in list */
80 struct timer *prev; /* prev timer in list */
81 struct timeval when; /* next expiration */
82 unsigned int rate; /* timer rate in ms */
83 user_handle_t win; /* window handle */
84 unsigned int msg; /* message to post */
85 unsigned int id; /* timer id */
86 unsigned int lparam; /* lparam for message */
91 struct object obj; /* object header */
92 unsigned int wake_bits; /* wakeup bits */
93 unsigned int wake_mask; /* wakeup mask */
94 unsigned int changed_bits; /* changed wakeup bits */
95 unsigned int changed_mask; /* changed wakeup mask */
96 int paint_count; /* pending paint messages count */
97 struct message_list msg_list[NB_MSG_KINDS]; /* lists of messages */
98 struct message_result *send_result; /* stack of sent messages waiting for result */
99 struct message_result *recv_result; /* stack of received messages waiting for result */
100 struct message *last_msg; /* last msg returned to the app and not removed */
101 enum message_kind last_msg_kind; /* message kind of last_msg */
102 struct timer *first_timer; /* head of timer list */
103 struct timer *last_timer; /* tail of timer list */
104 struct timer *next_timer; /* next timer to expire */
105 struct timeout_user *timeout; /* timeout for next timer to expire */
108 static void msg_queue_dump( struct object *obj, int verbose );
109 static int msg_queue_add_queue( struct object *obj, struct wait_queue_entry *entry );
110 static void msg_queue_remove_queue( struct object *obj, struct wait_queue_entry *entry );
111 static int msg_queue_signaled( struct object *obj, struct thread *thread );
112 static int msg_queue_satisfied( struct object *obj, struct thread *thread );
113 static void msg_queue_destroy( struct object *obj );
114 static void timer_callback( void *private );
116 static const struct object_ops msg_queue_ops =
118 sizeof(struct msg_queue), /* size */
119 msg_queue_dump, /* dump */
120 msg_queue_add_queue, /* add_queue */
121 msg_queue_remove_queue, /* remove_queue */
122 msg_queue_signaled, /* signaled */
123 msg_queue_satisfied, /* satisfied */
124 NULL, /* get_poll_events */
125 NULL, /* poll_event */
126 no_get_fd, /* get_fd */
127 no_flush, /* flush */
128 no_get_file_info, /* get_file_info */
129 NULL, /* queue_async */
130 msg_queue_destroy /* destroy */
134 static struct msg_queue *create_msg_queue( struct thread *thread )
136 struct msg_queue *queue;
139 if ((queue = alloc_object( &msg_queue_ops, -1 )))
141 queue->wake_bits = 0;
142 queue->wake_mask = 0;
143 queue->changed_bits = 0;
144 queue->changed_mask = 0;
145 queue->paint_count = 0;
146 queue->send_result = NULL;
147 queue->recv_result = NULL;
148 queue->last_msg = NULL;
149 queue->first_timer = NULL;
150 queue->last_timer = NULL;
151 queue->next_timer = NULL;
152 queue->timeout = NULL;
153 for (i = 0; i < NB_MSG_KINDS; i++)
154 queue->msg_list[i].first = queue->msg_list[i].last = NULL;
156 thread->queue = queue;
157 if (!thread->process->queue)
158 thread->process->queue = (struct msg_queue *)grab_object( queue );
163 /* check the queue status */
164 inline static int is_signaled( struct msg_queue *queue )
166 return ((queue->wake_bits & queue->wake_mask) || (queue->changed_bits & queue->changed_mask));
169 /* set some queue bits */
170 inline static void set_queue_bits( struct msg_queue *queue, unsigned int bits )
172 queue->wake_bits |= bits;
173 queue->changed_bits |= bits;
174 if (is_signaled( queue )) wake_up( &queue->obj, 0 );
177 /* clear some queue bits */
178 inline static void clear_queue_bits( struct msg_queue *queue, unsigned int bits )
180 queue->wake_bits &= ~bits;
181 queue->changed_bits &= ~bits;
184 /* get the QS_* bit corresponding to a given hardware message */
185 inline static int get_hardware_msg_bit( struct message *msg )
187 if (msg->msg == WM_MOUSEMOVE || msg->msg == WM_NCMOUSEMOVE) return QS_MOUSEMOVE;
188 if (msg->msg >= WM_KEYFIRST && msg->msg <= WM_KEYLAST) return QS_KEY;
189 return QS_MOUSEBUTTON;
192 /* get the current thread queue, creating it if needed */
193 inline static struct msg_queue *get_current_queue(void)
195 struct msg_queue *queue = current->queue;
196 if (!queue) queue = create_msg_queue( current );
200 /* append a message to the end of a list */
201 inline static void append_message( struct message_list *list, struct message *msg )
204 if ((msg->prev = list->last)) msg->prev->next = msg;
205 else list->first = msg;
209 /* unlink a message from a list it */
210 inline static void unlink_message( struct message_list *list, struct message *msg )
212 if (msg->next) msg->next->prev = msg->prev;
213 else list->last = msg->prev;
214 if (msg->prev) msg->prev->next = msg->next;
215 else list->first = msg->next;
218 /* try to merge a message with the last in the list; return 1 if successful */
219 static int merge_message( struct message_list *list, const struct message *msg )
221 struct message *prev = list->last;
224 if (prev->result) return 0;
225 if (prev->win != msg->win) return 0;
226 if (prev->msg != msg->msg) return 0;
227 if (prev->type != msg->type) return 0;
228 /* now we can merge it */
229 prev->wparam = msg->wparam;
230 prev->lparam = msg->lparam;
233 prev->time = msg->time;
234 prev->info = msg->info;
238 /* free a result structure */
239 static void free_result( struct message_result *result )
241 if (result->timeout) remove_timeout_user( result->timeout );
242 if (result->data) free( result->data );
246 /* store the message result in the appropriate structure */
247 static void store_message_result( struct message_result *res, unsigned int result,
250 res->result = result;
255 remove_timeout_user( res->timeout );
258 /* wake sender queue if waiting on this result */
259 if (res->sender && res->sender->send_result == res)
260 set_queue_bits( res->sender, QS_SMRESULT );
263 /* free a message when deleting a queue or window */
264 static void free_message( struct message *msg )
266 struct message_result *result = msg->result;
271 result->receiver = NULL;
272 store_message_result( result, 0, STATUS_ACCESS_DENIED /*FIXME*/ );
274 else free_result( result );
276 if (msg->data) free( msg->data );
280 /* remove (and free) a message from a message list */
281 static void remove_queue_message( struct msg_queue *queue, struct message *msg,
282 enum message_kind kind )
285 struct message *other;
287 if (queue->last_msg == msg) queue->last_msg = NULL;
288 unlink_message( &queue->msg_list[kind], msg );
292 if (!queue->msg_list[kind].first) clear_queue_bits( queue, QS_SENDMESSAGE );
295 if (!queue->msg_list[kind].first) clear_queue_bits( queue, QS_POSTMESSAGE );
297 case COOKED_HW_MESSAGE:
299 clr_bit = get_hardware_msg_bit( msg );
300 for (other = queue->msg_list[kind].first; other; other = other->next)
301 if (get_hardware_msg_bit( other ) == clr_bit) break;
302 if (!other) clear_queue_bits( queue, clr_bit );
308 /* message timed out without getting a reply */
309 static void result_timeout( void *private )
311 struct message_result *result = private;
313 assert( !result->replied );
315 result->timeout = NULL;
316 store_message_result( result, 0, STATUS_TIMEOUT );
319 /* allocate and fill a message result structure */
320 static struct message_result *alloc_message_result( struct msg_queue *send_queue,
321 struct msg_queue *recv_queue,
322 unsigned int timeout )
324 struct message_result *result = mem_alloc( sizeof(*result) );
327 /* put the result on the sender result stack */
328 result->sender = send_queue;
329 result->receiver = recv_queue;
332 result->data_size = 0;
333 result->timeout = NULL;
334 result->send_next = send_queue->send_result;
335 send_queue->send_result = result;
339 gettimeofday( &when, 0 );
340 add_timeout( &when, timeout );
341 result->timeout = add_timeout_user( &when, result_timeout, result );
347 /* receive a message, removing it from the sent queue */
348 static void receive_message( struct msg_queue *queue, struct message *msg,
349 struct get_message_reply *reply )
351 struct message_result *result = msg->result;
353 reply->total = msg->data_size;
354 if (msg->data_size > get_reply_max_size())
356 set_error( STATUS_BUFFER_OVERFLOW );
359 reply->type = msg->type;
360 reply->win = msg->win;
361 reply->msg = msg->msg;
362 reply->wparam = msg->wparam;
363 reply->lparam = msg->lparam;
366 reply->time = msg->time;
367 reply->info = msg->info;
369 if (msg->data) set_reply_data_ptr( msg->data, msg->data_size );
371 unlink_message( &queue->msg_list[SEND_MESSAGE], msg );
372 /* put the result on the receiver result stack */
375 result->recv_next = queue->recv_result;
376 queue->recv_result = result;
379 if (!queue->msg_list[SEND_MESSAGE].first) clear_queue_bits( queue, QS_SENDMESSAGE );
382 /* set the result of the current received message */
383 static void reply_message( struct msg_queue *queue, unsigned int result,
384 unsigned int error, int remove, const void *data, size_t len )
386 struct message_result *res = queue->recv_result;
390 queue->recv_result = res->recv_next;
391 res->receiver = NULL;
392 if (!res->sender) /* no one waiting for it */
400 if (len && (res->data = memdup( data, len ))) res->data_size = len;
401 store_message_result( res, result, error );
405 /* empty a message list and free all the messages */
406 static void empty_msg_list( struct message_list *list )
408 struct message *msg = list->first;
411 struct message *next = msg->next;
417 /* cleanup all pending results when deleting a queue */
418 static void cleanup_results( struct msg_queue *queue )
420 struct message_result *result, *next;
422 result = queue->send_result;
425 next = result->send_next;
426 result->sender = NULL;
427 if (!result->receiver) free_result( result );
431 while (queue->recv_result)
432 reply_message( queue, 0, STATUS_ACCESS_DENIED /*FIXME*/, 1, NULL, 0 );
435 static int msg_queue_add_queue( struct object *obj, struct wait_queue_entry *entry )
437 struct msg_queue *queue = (struct msg_queue *)obj;
438 struct process *process = entry->thread->process;
440 /* a thread can only wait on its own queue */
441 if (entry->thread->queue != queue)
443 set_error( STATUS_ACCESS_DENIED );
446 /* if waiting on the main process queue, set the idle event */
447 if (process->queue == queue)
449 if (process->idle_event) set_event( process->idle_event );
451 add_queue( obj, entry );
455 static void msg_queue_remove_queue(struct object *obj, struct wait_queue_entry *entry )
457 struct msg_queue *queue = (struct msg_queue *)obj;
458 struct process *process = entry->thread->process;
460 remove_queue( obj, entry );
462 assert( entry->thread->queue == queue );
464 /* if waiting on the main process queue, reset the idle event */
465 if (process->queue == queue)
467 if (process->idle_event) reset_event( process->idle_event );
471 static void msg_queue_dump( struct object *obj, int verbose )
473 struct msg_queue *queue = (struct msg_queue *)obj;
474 fprintf( stderr, "Msg queue bits=%x mask=%x\n",
475 queue->wake_bits, queue->wake_mask );
478 static int msg_queue_signaled( struct object *obj, struct thread *thread )
480 struct msg_queue *queue = (struct msg_queue *)obj;
481 return is_signaled( queue );
484 static int msg_queue_satisfied( struct object *obj, struct thread *thread )
486 struct msg_queue *queue = (struct msg_queue *)obj;
487 queue->wake_mask = 0;
488 queue->changed_mask = 0;
489 return 0; /* Not abandoned */
492 static void msg_queue_destroy( struct object *obj )
494 struct msg_queue *queue = (struct msg_queue *)obj;
495 struct timer *timer = queue->first_timer;
498 cleanup_results( queue );
499 for (i = 0; i < NB_MSG_KINDS; i++) empty_msg_list( &queue->msg_list[i] );
503 struct timer *next = timer->next;
507 if (queue->timeout) remove_timeout_user( queue->timeout );
510 /* set the next timer to expire */
511 static void set_next_timer( struct msg_queue *queue, struct timer *timer )
515 remove_timeout_user( queue->timeout );
516 queue->timeout = NULL;
518 if ((queue->next_timer = timer))
519 queue->timeout = add_timeout_user( &timer->when, timer_callback, queue );
521 /* set/clear QS_TIMER bit */
522 if (queue->next_timer == queue->first_timer)
523 clear_queue_bits( queue, QS_TIMER );
525 set_queue_bits( queue, QS_TIMER );
528 /* callback for the next timer expiration */
529 static void timer_callback( void *private )
531 struct msg_queue *queue = private;
533 queue->timeout = NULL;
534 /* move on to the next timer */
535 set_next_timer( queue, queue->next_timer->next );
538 /* link a timer at its rightful place in the queue list */
539 static void link_timer( struct msg_queue *queue, struct timer *timer )
541 struct timer *pos = queue->next_timer;
543 while (pos && time_before( &pos->when, &timer->when )) pos = pos->next;
545 if (pos) /* insert before pos */
547 if ((timer->prev = pos->prev)) timer->prev->next = timer;
548 else queue->first_timer = timer;
552 else /* insert at end */
555 timer->prev = queue->last_timer;
556 if (queue->last_timer) queue->last_timer->next = timer;
557 else queue->first_timer = timer;
558 queue->last_timer = timer;
560 /* check if we replaced the next timer */
561 if (pos == queue->next_timer) set_next_timer( queue, timer );
564 /* remove a timer from the queue timer list */
565 static void unlink_timer( struct msg_queue *queue, struct timer *timer )
567 if (timer->next) timer->next->prev = timer->prev;
568 else queue->last_timer = timer->prev;
569 if (timer->prev) timer->prev->next = timer->next;
570 else queue->first_timer = timer->next;
571 /* check if we removed the next timer */
572 if (queue->next_timer == timer) set_next_timer( queue, timer->next );
573 else if (queue->next_timer == queue->first_timer) clear_queue_bits( queue, QS_TIMER );
576 /* restart an expired timer */
577 static void restart_timer( struct msg_queue *queue, struct timer *timer )
580 unlink_timer( queue, timer );
581 gettimeofday( &now, 0 );
582 while (!time_before( &now, &timer->when )) add_timeout( &timer->when, timer->rate );
583 link_timer( queue, timer );
586 /* find an expired timer matching the filtering parameters */
587 static struct timer *find_expired_timer( struct msg_queue *queue, user_handle_t win,
588 unsigned int get_first, unsigned int get_last,
592 for (timer = queue->first_timer; (timer && timer != queue->next_timer); timer = timer->next)
594 if (win && timer->win != win) continue;
595 if (timer->msg >= get_first && timer->msg <= get_last)
597 if (remove) restart_timer( queue, timer );
605 static int kill_timer( struct msg_queue *queue, user_handle_t win,
606 unsigned int msg, unsigned int id )
610 for (timer = queue->first_timer; timer; timer = timer->next)
612 if (timer->win != win || timer->msg != msg || timer->id != id) continue;
613 unlink_timer( queue, timer );
621 static struct timer *set_timer( struct msg_queue *queue, unsigned int rate )
623 struct timer *timer = mem_alloc( sizeof(*timer) );
627 gettimeofday( &timer->when, 0 );
628 add_timeout( &timer->when, rate );
629 link_timer( queue, timer );
635 /* increment (or decrement if 'incr' is negative) the queue paint count */
636 void inc_queue_paint_count( struct thread *thread, int incr )
638 struct msg_queue *queue = thread->queue;
642 if ((queue->paint_count += incr) < 0) queue->paint_count = 0;
644 if (queue->paint_count)
645 set_queue_bits( queue, QS_PAINT );
647 clear_queue_bits( queue, QS_PAINT );
651 /* remove all messages and timers belonging to a certain window */
652 void queue_cleanup_window( struct thread *thread, user_handle_t win )
654 struct msg_queue *queue = thread->queue;
662 timer = queue->first_timer;
665 struct timer *next = timer->next;
666 if (timer->win == win)
668 unlink_timer( queue, timer );
674 /* remove messages */
675 for (i = 0; i < NB_MSG_KINDS; i++)
677 msg = queue->msg_list[i].first;
680 struct message *next = msg->next;
681 if (msg->win == win) remove_queue_message( queue, msg, i );
687 /* post a message to a window; used by socket handling */
688 void post_message( user_handle_t win, unsigned int message,
689 unsigned int wparam, unsigned int lparam )
692 struct thread *thread = get_window_thread( win );
696 if (thread->queue && (msg = mem_alloc( sizeof(*msg) )))
698 msg->type = MSG_POSTED;
699 msg->win = get_user_full_handle( win );
701 msg->wparam = wparam;
702 msg->lparam = lparam;
703 msg->time = get_tick_count();
711 append_message( &thread->queue->msg_list[POST_MESSAGE], msg );
712 set_queue_bits( thread->queue, QS_POSTMESSAGE );
714 release_object( thread );
718 /* get the message queue of the current thread */
719 DECL_HANDLER(get_msg_queue)
721 struct msg_queue *queue = get_current_queue();
724 if (queue) reply->handle = alloc_handle( current->process, queue, SYNCHRONIZE, 0 );
728 /* set the current message queue wakeup mask */
729 DECL_HANDLER(set_queue_mask)
731 struct msg_queue *queue = get_current_queue();
735 queue->wake_mask = req->wake_mask;
736 queue->changed_mask = req->changed_mask;
737 reply->wake_bits = queue->wake_bits;
738 reply->changed_bits = queue->changed_bits;
739 if (is_signaled( queue ))
741 /* if skip wait is set, do what would have been done in the subsequent wait */
742 if (req->skip_wait) msg_queue_satisfied( &queue->obj, current );
743 else wake_up( &queue->obj, 0 );
749 /* get the current message queue status */
750 DECL_HANDLER(get_queue_status)
752 struct msg_queue *queue = current->queue;
755 reply->wake_bits = queue->wake_bits;
756 reply->changed_bits = queue->changed_bits;
757 if (req->clear) queue->changed_bits = 0;
759 else reply->wake_bits = reply->changed_bits = 0;
763 /* send a message to a thread queue */
764 DECL_HANDLER(send_message)
767 struct msg_queue *send_queue = get_current_queue();
768 struct msg_queue *recv_queue;
769 struct thread *thread = get_thread_from_id( req->id );
773 if (!(recv_queue = thread->queue))
775 set_error( STATUS_INVALID_PARAMETER );
776 release_object( thread );
780 if ((msg = mem_alloc( sizeof(*msg) )))
782 msg->type = req->type;
783 msg->win = get_user_full_handle( req->win );
785 msg->wparam = req->wparam;
786 msg->lparam = req->lparam;
787 msg->time = req->time;
790 msg->info = req->info;
797 case MSG_OTHER_PROCESS:
798 msg->data_size = get_req_data_size();
799 if (msg->data_size && !(msg->data = memdup( get_req_data(), msg->data_size )))
808 if (!(msg->result = alloc_message_result( send_queue, recv_queue, req->timeout )))
815 append_message( &recv_queue->msg_list[SEND_MESSAGE], msg );
816 set_queue_bits( recv_queue, QS_SENDMESSAGE );
819 /* needed for posted DDE messages */
820 msg->data_size = get_req_data_size();
821 if (msg->data_size && !(msg->data = memdup( get_req_data(), msg->data_size )))
826 append_message( &recv_queue->msg_list[POST_MESSAGE], msg );
827 set_queue_bits( recv_queue, QS_POSTMESSAGE );
829 case MSG_HARDWARE_RAW:
830 case MSG_HARDWARE_COOKED:
832 struct message_list *list = ((msg->type == MSG_HARDWARE_RAW) ?
833 &recv_queue->msg_list[RAW_HW_MESSAGE] :
834 &recv_queue->msg_list[COOKED_HW_MESSAGE]);
835 if (msg->msg == WM_MOUSEMOVE && merge_message( list, msg ))
840 append_message( list, msg );
841 set_queue_bits( recv_queue, get_hardware_msg_bit(msg) );
845 set_error( STATUS_INVALID_PARAMETER );
850 release_object( thread );
853 /* return a message to the application, removing it from the queue if needed */
854 static void return_message_to_app( struct msg_queue *queue, int flags,
855 struct get_message_reply *reply,
856 struct message *msg, enum message_kind kind )
858 reply->total = msg->data_size;
859 if (msg->data_size > get_reply_max_size())
861 set_error( STATUS_BUFFER_OVERFLOW );
864 reply->type = msg->type;
865 reply->win = msg->win;
866 reply->msg = msg->msg;
867 reply->wparam = msg->wparam;
868 reply->lparam = msg->lparam;
871 reply->time = msg->time;
872 reply->info = msg->info;
874 /* raw messages always get removed */
875 if ((msg->type == MSG_HARDWARE_RAW) || (flags & GET_MSG_REMOVE))
877 queue->last_msg = NULL;
880 set_reply_data_ptr( msg->data, msg->data_size );
884 remove_queue_message( queue, msg, kind );
886 else /* remember it as the last returned message */
888 if (msg->data) set_reply_data( msg->data, msg->data_size );
889 queue->last_msg = msg;
890 queue->last_msg_kind = kind;
895 inline static struct message *find_matching_message( const struct message_list *list,
897 unsigned int first, unsigned int last )
901 for (msg = list->first; msg; msg = msg->next)
903 /* check against the filters */
904 if (msg->msg == WM_QUIT) break; /* WM_QUIT is never filtered */
905 if (win && msg->win && msg->win != win && !is_child_window( win, msg->win )) continue;
906 if (msg->msg < first) continue;
907 if (msg->msg > last) continue;
908 break; /* found one */
914 /* get a message from the current queue */
915 DECL_HANDLER(get_message)
919 struct msg_queue *queue = get_current_queue();
920 user_handle_t get_win = get_user_full_handle( req->get_win );
924 /* first check for sent messages */
925 if ((msg = queue->msg_list[SEND_MESSAGE].first))
927 receive_message( queue, msg, reply );
930 if (req->flags & GET_MSG_SENT_ONLY) goto done; /* nothing else to check */
932 /* if requested, remove the last returned but not yet removed message */
933 if ((req->flags & GET_MSG_REMOVE_LAST) && queue->last_msg)
934 remove_queue_message( queue, queue->last_msg, queue->last_msg_kind );
935 queue->last_msg = NULL;
937 /* clear changed bits so we can wait on them if we don't find a message */
938 queue->changed_bits = 0;
940 /* then check for posted messages */
941 if ((msg = find_matching_message( &queue->msg_list[POST_MESSAGE], get_win,
942 req->get_first, req->get_last )))
944 return_message_to_app( queue, req->flags, reply, msg, POST_MESSAGE );
948 /* then check for cooked hardware messages */
949 if ((msg = find_matching_message( &queue->msg_list[COOKED_HW_MESSAGE], get_win,
950 req->get_first, req->get_last )))
952 return_message_to_app( queue, req->flags, reply, msg, COOKED_HW_MESSAGE );
956 /* then check for any raw hardware message */
957 if ((msg = queue->msg_list[RAW_HW_MESSAGE].first))
959 return_message_to_app( queue, req->flags, reply, msg, RAW_HW_MESSAGE );
963 /* now check for WM_PAINT */
964 if (queue->paint_count &&
965 (WM_PAINT >= req->get_first) && (WM_PAINT <= req->get_last) &&
966 (reply->win = find_window_to_repaint( get_win, current )))
968 reply->type = MSG_POSTED;
969 reply->msg = WM_PAINT;
974 reply->time = get_tick_count();
979 /* now check for timer */
980 if ((timer = find_expired_timer( queue, get_win, req->get_first,
981 req->get_last, (req->flags & GET_MSG_REMOVE) )))
983 reply->type = MSG_POSTED;
984 reply->win = timer->win;
985 reply->msg = timer->msg;
986 reply->wparam = timer->id;
987 reply->lparam = timer->lparam;
990 reply->time = get_tick_count();
996 set_error( STATUS_PENDING ); /* FIXME */
1000 /* reply to a sent message */
1001 DECL_HANDLER(reply_message)
1003 if (current->queue && current->queue->recv_result)
1004 reply_message( current->queue, req->result, 0, req->remove,
1005 get_req_data(), get_req_data_size() );
1007 set_error( STATUS_ACCESS_DENIED );
1011 /* retrieve the reply for the last message sent */
1012 DECL_HANDLER(get_message_reply)
1014 struct msg_queue *queue = current->queue;
1018 struct message_result *result = queue->send_result;
1020 set_error( STATUS_PENDING );
1023 if (result && (result->replied || req->cancel))
1025 if (result->replied)
1027 reply->result = result->result;
1028 set_error( result->error );
1031 size_t data_len = min( result->data_size, get_reply_max_size() );
1032 set_reply_data_ptr( result->data, data_len );
1033 result->data = NULL;
1034 result->data_size = 0;
1037 queue->send_result = result->send_next;
1038 result->sender = NULL;
1039 if (!result->receiver) free_result( result );
1040 if (!queue->send_result || !queue->send_result->replied)
1041 clear_queue_bits( queue, QS_SMRESULT );
1044 else set_error( STATUS_ACCESS_DENIED );
1048 /* set a window timer */
1049 DECL_HANDLER(set_win_timer)
1051 struct timer *timer;
1052 struct msg_queue *queue = get_current_queue();
1053 user_handle_t win = get_user_full_handle( req->win );
1057 /* remove it if it existed already */
1058 if (win) kill_timer( queue, win, req->msg, req->id );
1060 if ((timer = set_timer( queue, req->rate )))
1063 timer->msg = req->msg;
1064 timer->id = req->id;
1065 timer->lparam = req->lparam;
1069 /* kill a window timer */
1070 DECL_HANDLER(kill_win_timer)
1072 struct msg_queue *queue = current->queue;
1074 if (!queue || !kill_timer( queue, get_user_full_handle(req->win), req->msg, req->id ))
1075 set_error( STATUS_INVALID_PARAMETER );