1 /* * Message queues related functions
3 * Copyright 1993, 1994 Alexandre Julliard
8 #include "wine/winbase16.h"
9 #include "wine/winuser16.h"
16 #include "clipboard.h"
22 #include "debugtools.h"
25 DECLARE_DEBUG_CHANNEL(msg)
26 DECLARE_DEBUG_CHANNEL(sendmsg)
28 #define MAX_QUEUE_SIZE 120 /* Max. size of a message queue */
30 static HQUEUE16 hFirstQueue = 0;
31 static HQUEUE16 hExitingQueue = 0;
32 static HQUEUE16 hmemSysMsgQueue = 0;
33 static MESSAGEQUEUE *sysMsgQueue = NULL;
34 static PERQUEUEDATA *pQDataWin16 = NULL; /* Global perQData for Win16 tasks */
36 static MESSAGEQUEUE *pMouseQueue = NULL; /* Queue for last mouse message */
37 static MESSAGEQUEUE *pKbdQueue = NULL; /* Queue for last kbd message */
39 HQUEUE16 hCursorQueue = 0;
40 HQUEUE16 hActiveQueue = 0;
43 /***********************************************************************
44 * PERQDATA_CreateInstance
46 * Creates an instance of a reference counted PERQUEUEDATA element
47 * for the message queue. perQData is stored globally for 16 bit tasks.
49 * Note: We don't implement perQdata exactly the same way Windows does.
50 * Each perQData element is reference counted since it may be potentially
51 * shared by multiple message Queues (via AttachThreadInput).
52 * We only store the current values for Active, Capture and focus windows
55 PERQUEUEDATA * PERQDATA_CreateInstance( )
63 /* Share a single instance of perQData for all 16 bit tasks */
64 if ( ( bIsWin16 = THREAD_IsWin16( NtCurrentTeb() ) ) )
66 /* If previously allocated, just bump up ref count */
69 PERQDATA_Addref( pQDataWin16 );
74 /* Allocate PERQUEUEDATA from the system heap */
75 if (!( pQData = (PERQUEUEDATA *) HeapAlloc( SystemHeap, 0,
76 sizeof(PERQUEUEDATA) ) ))
80 pQData->hWndCapture = pQData->hWndFocus = pQData->hWndActive = 0;
81 pQData->ulRefCount = 1;
82 pQData->nCaptureHT = HTCLIENT;
84 /* Note: We have an independent critical section for the per queue data
85 * since this may be shared by different threads. see AttachThreadInput()
87 InitializeCriticalSection( &pQData->cSection );
89 /* Save perQData globally for 16 bit tasks */
97 /***********************************************************************
100 * Increment reference count for the PERQUEUEDATA instance
101 * Returns reference count for debugging purposes
103 ULONG PERQDATA_Addref( PERQUEUEDATA *pQData )
105 assert(pQData != 0 );
106 TRACE_(msg)("(): current refcount %lu ...\n", pQData->ulRefCount);
108 EnterCriticalSection( &pQData->cSection );
109 ++pQData->ulRefCount;
110 LeaveCriticalSection( &pQData->cSection );
112 return pQData->ulRefCount;
116 /***********************************************************************
119 * Release a reference to a PERQUEUEDATA instance.
120 * Destroy the instance if no more references exist
121 * Returns reference count for debugging purposes
123 ULONG PERQDATA_Release( PERQUEUEDATA *pQData )
125 assert(pQData != 0 );
126 TRACE_(msg)("(): current refcount %lu ...\n",
127 (LONG)pQData->ulRefCount );
129 EnterCriticalSection( &pQData->cSection );
130 if ( --pQData->ulRefCount == 0 )
132 LeaveCriticalSection( &pQData->cSection );
133 DeleteCriticalSection( &pQData->cSection );
135 TRACE_(msg)("(): deleting PERQUEUEDATA instance ...\n" );
137 /* Deleting our global 16 bit perQData? */
138 if ( pQData == pQDataWin16 )
141 /* Free the PERQUEUEDATA instance */
142 HeapFree( SystemHeap, 0, pQData );
146 LeaveCriticalSection( &pQData->cSection );
148 return pQData->ulRefCount;
152 /***********************************************************************
153 * PERQDATA_GetFocusWnd
155 * Get the focus hwnd member in a threadsafe manner
157 HWND PERQDATA_GetFocusWnd( PERQUEUEDATA *pQData )
160 assert(pQData != 0 );
162 EnterCriticalSection( &pQData->cSection );
163 hWndFocus = pQData->hWndFocus;
164 LeaveCriticalSection( &pQData->cSection );
170 /***********************************************************************
171 * PERQDATA_SetFocusWnd
173 * Set the focus hwnd member in a threadsafe manner
175 HWND PERQDATA_SetFocusWnd( PERQUEUEDATA *pQData, HWND hWndFocus )
178 assert(pQData != 0 );
180 EnterCriticalSection( &pQData->cSection );
181 hWndFocusPrv = pQData->hWndFocus;
182 pQData->hWndFocus = hWndFocus;
183 LeaveCriticalSection( &pQData->cSection );
189 /***********************************************************************
190 * PERQDATA_GetActiveWnd
192 * Get the active hwnd member in a threadsafe manner
194 HWND PERQDATA_GetActiveWnd( PERQUEUEDATA *pQData )
197 assert(pQData != 0 );
199 EnterCriticalSection( &pQData->cSection );
200 hWndActive = pQData->hWndActive;
201 LeaveCriticalSection( &pQData->cSection );
207 /***********************************************************************
208 * PERQDATA_SetActiveWnd
210 * Set the active focus hwnd member in a threadsafe manner
212 HWND PERQDATA_SetActiveWnd( PERQUEUEDATA *pQData, HWND hWndActive )
215 assert(pQData != 0 );
217 EnterCriticalSection( &pQData->cSection );
218 hWndActivePrv = pQData->hWndActive;
219 pQData->hWndActive = hWndActive;
220 LeaveCriticalSection( &pQData->cSection );
222 return hWndActivePrv;
226 /***********************************************************************
227 * PERQDATA_GetCaptureWnd
229 * Get the capture hwnd member in a threadsafe manner
231 HWND PERQDATA_GetCaptureWnd( PERQUEUEDATA *pQData )
234 assert(pQData != 0 );
236 EnterCriticalSection( &pQData->cSection );
237 hWndCapture = pQData->hWndCapture;
238 LeaveCriticalSection( &pQData->cSection );
244 /***********************************************************************
245 * PERQDATA_SetCaptureWnd
247 * Set the capture hwnd member in a threadsafe manner
249 HWND PERQDATA_SetCaptureWnd( PERQUEUEDATA *pQData, HWND hWndCapture )
252 assert(pQData != 0 );
254 EnterCriticalSection( &pQData->cSection );
255 hWndCapturePrv = pQData->hWndCapture;
256 pQData->hWndCapture = hWndCapture;
257 LeaveCriticalSection( &pQData->cSection );
259 return hWndCapturePrv;
263 /***********************************************************************
264 * PERQDATA_GetCaptureInfo
266 * Get the capture info member in a threadsafe manner
268 INT16 PERQDATA_GetCaptureInfo( PERQUEUEDATA *pQData )
271 assert(pQData != 0 );
273 EnterCriticalSection( &pQData->cSection );
274 nCaptureHT = pQData->nCaptureHT;
275 LeaveCriticalSection( &pQData->cSection );
281 /***********************************************************************
282 * PERQDATA_SetCaptureInfo
284 * Set the capture info member in a threadsafe manner
286 INT16 PERQDATA_SetCaptureInfo( PERQUEUEDATA *pQData, INT16 nCaptureHT )
289 assert(pQData != 0 );
291 EnterCriticalSection( &pQData->cSection );
292 nCaptureHTPrv = pQData->nCaptureHT;
293 pQData->nCaptureHT = nCaptureHT;
294 LeaveCriticalSection( &pQData->cSection );
296 return nCaptureHTPrv;
300 /***********************************************************************
303 * Function for getting a 32 bit pointer on queue strcture. For thread
304 * safeness programmers should use this function instead of GlobalLock to
305 * retrieve a pointer on the structure. QUEUE_Unlock should also be called
306 * when access to the queue structure is not required anymore.
308 MESSAGEQUEUE *QUEUE_Lock( HQUEUE16 hQueue )
312 HeapLock( SystemHeap ); /* FIXME: a bit overkill */
313 queue = GlobalLock16( hQueue );
314 if ( !queue || (queue->magic != QUEUE_MAGIC) )
316 HeapUnlock( SystemHeap );
321 HeapUnlock( SystemHeap );
326 /***********************************************************************
329 * Use with QUEUE_Lock to get a thread safe access to message queue
332 void QUEUE_Unlock( MESSAGEQUEUE *queue )
336 HeapLock( SystemHeap ); /* FIXME: a bit overkill */
338 if ( --queue->lockCount == 0 )
340 DeleteCriticalSection ( &queue->cSection );
342 CloseHandle( queue->hEvent );
343 GlobalFree16( queue->self );
346 HeapUnlock( SystemHeap );
351 /***********************************************************************
354 void QUEUE_DumpQueue( HQUEUE16 hQueue )
358 if (!(pq = (MESSAGEQUEUE*) QUEUE_Lock( hQueue )) )
360 WARN_(msg)("%04x is not a queue handle\n", hQueue );
364 DPRINTF( "next: %12.4x Intertask SendMessage:\n"
365 "thread: %10p ----------------------\n"
366 "firstMsg: %8p smWaiting: %10p\n"
367 "lastMsg: %8p smPending: %10p\n"
368 "msgCount: %8.4x smProcessing: %10p\n"
376 pq->next, pq->teb, pq->firstMsg, pq->smWaiting, pq->lastMsg,
377 pq->smPending, pq->msgCount, pq->smProcessing,
378 (unsigned)pq->lockCount, pq->wWinVersion,
379 pq->wPaintCount, pq->wTimerCount,
380 pq->wakeBits, pq->wakeMask, pq->hCurHook);
386 /***********************************************************************
389 void QUEUE_WalkQueues(void)
392 HQUEUE16 hQueue = hFirstQueue;
394 DPRINTF( "Queue Msgs Thread Task Module\n" );
397 MESSAGEQUEUE *queue = (MESSAGEQUEUE *)QUEUE_Lock( hQueue );
400 WARN_(msg)("Bad queue handle %04x\n", hQueue );
403 if (!GetModuleName16( queue->teb->process->task, module, sizeof(module )))
404 strcpy( module, "???" );
405 DPRINTF( "%04x %4d %p %04x %s\n", hQueue,queue->msgCount,
406 queue->teb, queue->teb->process->task, module );
407 hQueue = queue->next;
408 QUEUE_Unlock( queue );
414 /***********************************************************************
415 * QUEUE_IsExitingQueue
417 BOOL QUEUE_IsExitingQueue( HQUEUE16 hQueue )
419 return (hExitingQueue && (hQueue == hExitingQueue));
423 /***********************************************************************
424 * QUEUE_SetExitingQueue
426 void QUEUE_SetExitingQueue( HQUEUE16 hQueue )
428 hExitingQueue = hQueue;
432 /***********************************************************************
433 * QUEUE_CreateMsgQueue
435 * Creates a message queue. Doesn't link it into queue list!
437 static HQUEUE16 QUEUE_CreateMsgQueue( BOOL16 bCreatePerQData )
440 MESSAGEQUEUE * msgQueue;
441 TDB *pTask = (TDB *)GlobalLock16( GetCurrentTask() );
443 TRACE_(msg)("(): Creating message queue...\n");
445 if (!(hQueue = GlobalAlloc16( GMEM_FIXED | GMEM_ZEROINIT,
446 sizeof(MESSAGEQUEUE) )))
449 msgQueue = (MESSAGEQUEUE *) GlobalLock16( hQueue );
453 msgQueue->self = hQueue;
454 msgQueue->wakeBits = msgQueue->changeBits = 0;
455 msgQueue->wWinVersion = pTask ? pTask->version : 0;
457 InitializeCriticalSection( &msgQueue->cSection );
458 MakeCriticalSectionGlobal( &msgQueue->cSection );
460 /* Create an Event object for waiting on message, used by win32 thread
462 if ( !THREAD_IsWin16( NtCurrentTeb() ) )
464 msgQueue->hEvent = CreateEventA( NULL, FALSE, FALSE, NULL);
466 if (msgQueue->hEvent == 0)
468 WARN_(msg)("CreateEvent32A is not able to create an event object");
471 msgQueue->hEvent = ConvertToGlobalHandle( msgQueue->hEvent );
474 msgQueue->hEvent = 0;
476 msgQueue->lockCount = 1;
477 msgQueue->magic = QUEUE_MAGIC;
479 /* Create and initialize our per queue data */
480 msgQueue->pQData = bCreatePerQData ? PERQDATA_CreateInstance() : NULL;
486 /***********************************************************************
489 * Try to reply to all pending sent messages on exit.
491 static void QUEUE_FlushMessages( MESSAGEQUEUE *queue )
494 MESSAGEQUEUE *senderQ = 0;
498 EnterCriticalSection( &queue->cSection );
500 /* empty the list of pending SendMessage waiting to be received */
501 while (queue->smPending)
503 smsg = QUEUE_RemoveSMSG( queue, SM_PENDING_LIST, 0);
505 senderQ = (MESSAGEQUEUE*)QUEUE_Lock( smsg->hSrcQueue );
509 /* return 0, to unblock other thread */
511 smsg->flags |= SMSG_HAVE_RESULT;
512 QUEUE_SetWakeBit( senderQ, QS_SMRESULT);
514 QUEUE_Unlock( senderQ );
517 QUEUE_ClearWakeBit( queue, QS_SENDMESSAGE );
519 LeaveCriticalSection( &queue->cSection );
524 /***********************************************************************
525 * QUEUE_DeleteMsgQueue
527 * Unlinks and deletes a message queue.
529 * Note: We need to mask asynchronous events to make sure PostMessage works
530 * even in the signal handler.
532 BOOL QUEUE_DeleteMsgQueue( HQUEUE16 hQueue )
534 MESSAGEQUEUE * msgQueue = (MESSAGEQUEUE*)QUEUE_Lock(hQueue);
537 TRACE_(msg)("(): Deleting message queue %04x\n", hQueue);
539 if (!hQueue || !msgQueue)
541 WARN_(msg)("invalid argument.\n");
547 if( hCursorQueue == hQueue ) hCursorQueue = 0;
548 if( hActiveQueue == hQueue ) hActiveQueue = 0;
550 /* flush sent messages */
551 QUEUE_FlushMessages( msgQueue );
553 HeapLock( SystemHeap ); /* FIXME: a bit overkill */
555 /* Release per queue data if present */
556 if ( msgQueue->pQData )
558 PERQDATA_Release( msgQueue->pQData );
559 msgQueue->pQData = 0;
562 /* remove the message queue from the global link list */
563 pPrev = &hFirstQueue;
564 while (*pPrev && (*pPrev != hQueue))
566 MESSAGEQUEUE *msgQ = (MESSAGEQUEUE*)GlobalLock16(*pPrev);
569 if ( !msgQ || (msgQ->magic != QUEUE_MAGIC) )
571 /* HQUEUE link list is corrupted, try to exit gracefully */
572 WARN_(msg)("HQUEUE link list corrupted!\n");
578 if (pPrev && *pPrev) *pPrev = msgQueue->next;
581 HeapUnlock( SystemHeap );
583 /* free up resource used by MESSAGEQUEUE strcture */
584 msgQueue->lockCount--;
585 QUEUE_Unlock( msgQueue );
591 /***********************************************************************
592 * QUEUE_CreateSysMsgQueue
594 * Create the system message queue, and set the double-click speed.
595 * Must be called only once.
597 BOOL QUEUE_CreateSysMsgQueue( int size )
599 /* Note: We dont need perQ data for the system message queue */
600 if (!(hmemSysMsgQueue = QUEUE_CreateMsgQueue( FALSE )))
603 sysMsgQueue = (MESSAGEQUEUE *) GlobalLock16( hmemSysMsgQueue );
608 /***********************************************************************
611 MESSAGEQUEUE *QUEUE_GetSysQueue(void)
617 /***********************************************************************
620 * See "Windows Internals", p.449
622 void QUEUE_SetWakeBit( MESSAGEQUEUE *queue, WORD bit )
624 TRACE_(msg)("queue = %04x (wm=%04x), bit = %04x\n",
625 queue->self, queue->wakeMask, bit );
627 if (bit & QS_MOUSE) pMouseQueue = queue;
628 if (bit & QS_KEY) pKbdQueue = queue;
629 queue->changeBits |= bit;
630 queue->wakeBits |= bit;
631 if (queue->wakeMask & bit)
635 /* Wake up thread waiting for message */
636 if ( THREAD_IsWin16( queue->teb ) )
638 int iWndsLock = WIN_SuspendWndsLock();
639 PostEvent16( queue->teb->process->task );
640 WIN_RestoreWndsLock( iWndsLock );
644 SetEvent( queue->hEvent );
650 /***********************************************************************
653 void QUEUE_ClearWakeBit( MESSAGEQUEUE *queue, WORD bit )
655 queue->changeBits &= ~bit;
656 queue->wakeBits &= ~bit;
660 /***********************************************************************
663 * See "Windows Internals", p.447
666 * 0 if exit with timeout
669 int QUEUE_WaitBits( WORD bits, DWORD timeout )
674 TRACE_(msg)("q %04x waiting for %04x\n", GetFastQueue16(), bits);
676 if ( THREAD_IsWin16( NtCurrentTeb() ) && (timeout != INFINITE) )
677 curTime = GetTickCount();
679 if (!(queue = (MESSAGEQUEUE *)QUEUE_Lock( GetFastQueue16() ))) return 0;
683 if (queue->changeBits & bits)
685 /* One of the bits is set; we can return */
687 QUEUE_Unlock( queue );
690 if (queue->wakeBits & QS_SENDMESSAGE)
692 /* Process the sent message immediately */
695 QUEUE_ReceiveMessage( queue );
696 continue; /* nested sm crux */
699 queue->wakeMask = bits | QS_SENDMESSAGE;
700 if(queue->changeBits & bits)
705 TRACE_(msg)("%04x) wakeMask is %04x, waiting\n", queue->self, queue->wakeMask);
707 if ( !THREAD_IsWin16( NtCurrentTeb() ) )
712 if ( (bHasWin16Lock = _ConfirmWin16Lock()) )
714 TRACE_(msg)("bHasWin16Lock=TRUE\n");
715 ReleaseThunkLock( &dwlc );
717 WaitForSingleObject( queue->hEvent, timeout );
720 RestoreThunkLock( dwlc );
725 if ( timeout == INFINITE )
726 WaitEvent16( 0 ); /* win 16 thread, use WaitEvent */
729 /* check for timeout, then give control to other tasks */
730 if (GetTickCount() - curTime > timeout)
733 QUEUE_Unlock( queue );
734 return 0; /* exit with timeout */
743 /***********************************************************************
746 * This routine is called when a SMSG need to be added to one of the three
747 * SM list. (SM_PROCESSING_LIST, SM_PENDING_LIST, SM_WAITING_LIST)
749 BOOL QUEUE_AddSMSG( MESSAGEQUEUE *queue, int list, SMSG *smsg )
751 TRACE_(sendmsg)("queue=%x, list=%d, smsg=%p msg=%s\n", queue->self, list,
752 smsg, SPY_GetMsgName(smsg->msg));
756 case SM_PROCESSING_LIST:
757 /* don't need to be thread safe, only accessed by the
758 thread associated with the sender queue */
759 smsg->nextProcessing = queue->smProcessing;
760 queue->smProcessing = smsg;
763 case SM_WAITING_LIST:
764 /* don't need to be thread safe, only accessed by the
765 thread associated with the receiver queue */
766 smsg->nextWaiting = queue->smWaiting;
767 queue->smWaiting = smsg;
770 case SM_PENDING_LIST:
772 /* make it thread safe, could be accessed by the sender and
776 EnterCriticalSection( &queue->cSection );
777 smsg->nextPending = NULL;
778 prev = &queue->smPending;
780 prev = &(*prev)->nextPending;
782 LeaveCriticalSection( &queue->cSection );
784 QUEUE_SetWakeBit( queue, QS_SENDMESSAGE );
789 WARN_(sendmsg)("Invalid list: %d", list);
797 /***********************************************************************
800 * This routine is called when a SMSG need to be remove from one of the three
801 * SM list. (SM_PROCESSING_LIST, SM_PENDING_LIST, SM_WAITING_LIST)
802 * If smsg == 0, remove the first smsg from the specified list
804 SMSG *QUEUE_RemoveSMSG( MESSAGEQUEUE *queue, int list, SMSG *smsg )
809 case SM_PROCESSING_LIST:
810 /* don't need to be thread safe, only accessed by the
811 thread associated with the sender queue */
813 /* if smsg is equal to null, it means the first in the list */
815 smsg = queue->smProcessing;
817 TRACE_(sendmsg)("queue=%x, list=%d, smsg=%p msg=%s\n", queue->self, list,
818 smsg, SPY_GetMsgName(smsg->msg));
819 /* In fact SM_PROCESSING_LIST is a stack, and smsg
820 should be always at the top of the list */
821 if ( (smsg != queue->smProcessing) || !queue->smProcessing )
823 ERR_(sendmsg)("smsg not at the top of Processing list, smsg=0x%p queue=0x%p", smsg, queue);
828 queue->smProcessing = smsg->nextProcessing;
829 smsg->nextProcessing = 0;
833 case SM_WAITING_LIST:
834 /* don't need to be thread safe, only accessed by the
835 thread associated with the receiver queue */
837 /* if smsg is equal to null, it means the first in the list */
839 smsg = queue->smWaiting;
841 TRACE_(sendmsg)("queue=%x, list=%d, smsg=%p msg=%s\n", queue->self, list,
842 smsg, SPY_GetMsgName(smsg->msg));
843 /* In fact SM_WAITING_LIST is a stack, and smsg
844 should be always at the top of the list */
845 if ( (smsg != queue->smWaiting) || !queue->smWaiting )
847 ERR_(sendmsg)("smsg not at the top of Waiting list, smsg=0x%p queue=0x%p", smsg, queue);
852 queue->smWaiting = smsg->nextWaiting;
853 smsg->nextWaiting = 0;
857 case SM_PENDING_LIST:
858 /* make it thread safe, could be accessed by the sender and
860 EnterCriticalSection( &queue->cSection );
862 if (!smsg || !queue->smPending)
863 smsg = queue->smPending;
866 ERR_(sendmsg)("should always remove the top one in Pending list, smsg=0x%p queue=0x%p", smsg, queue);
867 LeaveCriticalSection( &queue->cSection );
871 TRACE_(sendmsg)("queue=%x, list=%d, smsg=%p msg=%s\n", queue->self, list,
872 smsg, SPY_GetMsgName(smsg->msg));
874 queue->smPending = smsg->nextPending;
875 smsg->nextPending = 0;
877 /* if no more SMSG in Pending list, clear QS_SENDMESSAGE flag */
878 if (!queue->smPending)
879 QUEUE_ClearWakeBit( queue, QS_SENDMESSAGE );
881 LeaveCriticalSection( &queue->cSection );
885 WARN_(sendmsg)("Invalid list: %d", list);
893 /***********************************************************************
894 * QUEUE_ReceiveMessage
896 * This routine is called when a sent message is waiting for the queue.
898 void QUEUE_ReceiveMessage( MESSAGEQUEUE *queue )
902 MESSAGEQUEUE *senderQ;
904 TRACE_(sendmsg)("queue %04x\n", queue->self );
906 if ( !(queue->wakeBits & QS_SENDMESSAGE) && queue->smPending )
908 TRACE_(sendmsg)("\trcm: nothing to do\n");
912 /* remove smsg on the top of the pending list and put it in the processing list */
913 smsg = QUEUE_RemoveSMSG(queue, SM_PENDING_LIST, 0);
914 QUEUE_AddSMSG(queue, SM_WAITING_LIST, smsg);
916 TRACE_(sendmsg)("RM: %s [%04x] (%04x -> %04x)\n",
917 SPY_GetMsgName(smsg->msg), smsg->msg, smsg->hSrcQueue, smsg->hDstQueue );
919 if (IsWindow( smsg->hWnd ))
921 WND *wndPtr = WIN_FindWndPtr( smsg->hWnd );
922 DWORD extraInfo = queue->GetMessageExtraInfoVal; /* save ExtraInfo */
924 /* use sender queue extra info value while calling the window proc */
925 senderQ = (MESSAGEQUEUE*)QUEUE_Lock( smsg->hSrcQueue );
928 queue->GetMessageExtraInfoVal = senderQ->GetMessageExtraInfoVal;
929 QUEUE_Unlock( senderQ );
932 /* call the right version of CallWindowProcXX */
933 if (smsg->flags & SMSG_WIN32)
935 TRACE_(sendmsg)("\trcm: msg is Win32\n" );
936 if (smsg->flags & SMSG_UNICODE)
937 result = CallWindowProcW( wndPtr->winproc,
938 smsg->hWnd, smsg->msg,
939 smsg->wParam, smsg->lParam );
941 result = CallWindowProcA( wndPtr->winproc,
942 smsg->hWnd, smsg->msg,
943 smsg->wParam, smsg->lParam );
945 else /* Win16 message */
946 result = CallWindowProc16( (WNDPROC16)wndPtr->winproc,
949 LOWORD (smsg->wParam),
952 queue->GetMessageExtraInfoVal = extraInfo; /* Restore extra info */
953 WIN_ReleaseWndPtr(wndPtr);
954 TRACE_(sendmsg)("result = %08x\n", (unsigned)result );
956 else WARN_(sendmsg)("\trcm: bad hWnd\n");
959 /* set SMSG_SENDING_REPLY flag to tell ReplyMessage16, it's not
961 smsg->flags |= SMSG_SENDING_REPLY;
962 ReplyMessage( result );
964 TRACE_(sendmsg)("done! \n" );
969 /***********************************************************************
972 * Add a message to the queue. Return FALSE if queue is full.
974 BOOL QUEUE_AddMsg( HQUEUE16 hQueue, MSG *msg, DWORD extraInfo )
976 MESSAGEQUEUE *msgQueue;
980 if (!(msgQueue = (MESSAGEQUEUE *)QUEUE_Lock( hQueue ))) return FALSE;
982 /* allocate new message in global heap for now */
983 if (!(qmsg = (QMSG *) HeapAlloc( SystemHeap, 0, sizeof(QMSG) ) ))
985 QUEUE_Unlock( msgQueue );
989 EnterCriticalSection( &msgQueue->cSection );
993 qmsg->extraInfo = extraInfo;
995 /* insert the message in the link list */
997 qmsg->prevMsg = msgQueue->lastMsg;
999 if (msgQueue->lastMsg)
1000 msgQueue->lastMsg->nextMsg = qmsg;
1002 /* update first and last anchor in message queue */
1003 msgQueue->lastMsg = qmsg;
1004 if (!msgQueue->firstMsg)
1005 msgQueue->firstMsg = qmsg;
1007 msgQueue->msgCount++;
1009 LeaveCriticalSection( &msgQueue->cSection );
1011 QUEUE_SetWakeBit( msgQueue, QS_POSTMESSAGE );
1012 QUEUE_Unlock( msgQueue );
1019 /***********************************************************************
1022 * Find a message matching the given parameters. Return -1 if none available.
1024 QMSG* QUEUE_FindMsg( MESSAGEQUEUE * msgQueue, HWND hwnd, int first, int last )
1028 EnterCriticalSection( &msgQueue->cSection );
1030 if (!msgQueue->msgCount)
1032 else if (!hwnd && !first && !last)
1033 qmsg = msgQueue->firstMsg;
1036 /* look in linked list for message matching first and last criteria */
1037 for (qmsg = msgQueue->firstMsg; qmsg; qmsg = qmsg->nextMsg)
1039 MSG *msg = &(qmsg->msg);
1041 if (!hwnd || (msg->hwnd == hwnd))
1043 if (!first && !last)
1044 break; /* found it */
1046 if ((msg->message >= first) && (!last || (msg->message <= last)))
1047 break; /* found it */
1052 LeaveCriticalSection( &msgQueue->cSection );
1059 /***********************************************************************
1062 * Remove a message from the queue (pos must be a valid position).
1064 void QUEUE_RemoveMsg( MESSAGEQUEUE * msgQueue, QMSG *qmsg )
1066 EnterCriticalSection( &msgQueue->cSection );
1068 /* set the linked list */
1070 qmsg->prevMsg->nextMsg = qmsg->nextMsg;
1073 qmsg->nextMsg->prevMsg = qmsg->prevMsg;
1075 if (msgQueue->firstMsg == qmsg)
1076 msgQueue->firstMsg = qmsg->nextMsg;
1078 if (msgQueue->lastMsg == qmsg)
1079 msgQueue->lastMsg = qmsg->prevMsg;
1081 /* deallocate the memory for the message */
1082 HeapFree( SystemHeap, 0, qmsg );
1084 msgQueue->msgCount--;
1085 if (!msgQueue->msgCount) msgQueue->wakeBits &= ~QS_POSTMESSAGE;
1087 LeaveCriticalSection( &msgQueue->cSection );
1091 /***********************************************************************
1094 * Wake a queue upon reception of a hardware event.
1096 static void QUEUE_WakeSomeone( UINT message )
1101 HQUEUE16 hQueue = 0;
1102 MESSAGEQUEUE *queue = NULL;
1105 hQueue = hCursorQueue;
1107 if( (message >= WM_KEYFIRST) && (message <= WM_KEYLAST) )
1111 hQueue = hActiveQueue;
1115 wakeBit = (message == WM_MOUSEMOVE) ? QS_MOUSEMOVE : QS_MOUSEBUTTON;
1116 if( (hwnd = GetCapture()) )
1117 if( (wndPtr = WIN_FindWndPtr( hwnd )) )
1119 hQueue = wndPtr->hmemTaskQ;
1120 WIN_ReleaseWndPtr(wndPtr);
1124 if( (hwnd = GetSysModalWindow16()) )
1126 if( (wndPtr = WIN_FindWndPtr( hwnd )) )
1128 hQueue = wndPtr->hmemTaskQ;
1129 WIN_ReleaseWndPtr(wndPtr);
1134 queue = QUEUE_Lock( hQueue );
1138 queue = QUEUE_Lock( hFirstQueue );
1141 if (queue->wakeMask & wakeBit) break;
1143 QUEUE_Unlock(queue);
1144 queue = QUEUE_Lock( queue->next );
1148 WARN_(msg)("couldn't find queue\n");
1153 QUEUE_SetWakeBit( queue, wakeBit );
1155 QUEUE_Unlock( queue );
1159 /***********************************************************************
1162 * Add an event to the system message queue.
1163 * Note: the position is relative to the desktop window.
1165 void hardware_event( UINT message, WPARAM wParam, LPARAM lParam,
1166 int xPos, int yPos, DWORD time, DWORD extraInfo )
1172 if (!sysMsgQueue) return;
1174 EnterCriticalSection( &sysMsgQueue->cSection );
1176 /* Merge with previous event if possible */
1177 qmsg = sysMsgQueue->lastMsg;
1179 if ((message == WM_MOUSEMOVE) && sysMsgQueue->lastMsg)
1181 msg = &(sysMsgQueue->lastMsg->msg);
1183 if ((msg->message == message) && (msg->wParam == wParam))
1186 qmsg = sysMsgQueue->lastMsg;
1193 /* Should I limit the number of message in
1194 the system message queue??? */
1196 /* Don't merge allocate a new msg in the global heap */
1198 if (!(qmsg = (QMSG *) HeapAlloc( SystemHeap, 0, sizeof(QMSG) ) ))
1200 LeaveCriticalSection( &sysMsgQueue->cSection );
1204 /* put message at the end of the linked list */
1206 qmsg->prevMsg = sysMsgQueue->lastMsg;
1208 if (sysMsgQueue->lastMsg)
1209 sysMsgQueue->lastMsg->nextMsg = qmsg;
1211 /* set last and first anchor index in system message queue */
1212 sysMsgQueue->lastMsg = qmsg;
1213 if (!sysMsgQueue->firstMsg)
1214 sysMsgQueue->firstMsg = qmsg;
1216 sysMsgQueue->msgCount++;
1222 msg->message = message;
1223 msg->wParam = wParam;
1224 msg->lParam = lParam;
1228 qmsg->extraInfo = extraInfo;
1230 LeaveCriticalSection( &sysMsgQueue->cSection );
1232 QUEUE_WakeSomeone( message );
1236 /***********************************************************************
1237 * QUEUE_GetQueueTask
1239 HTASK16 QUEUE_GetQueueTask( HQUEUE16 hQueue )
1243 MESSAGEQUEUE *queue = QUEUE_Lock( hQueue );
1247 hTask = queue->teb->process->task;
1248 QUEUE_Unlock( queue );
1256 /***********************************************************************
1257 * QUEUE_IncPaintCount
1259 void QUEUE_IncPaintCount( HQUEUE16 hQueue )
1261 MESSAGEQUEUE *queue;
1263 if (!(queue = (MESSAGEQUEUE *)QUEUE_Lock( hQueue ))) return;
1264 queue->wPaintCount++;
1265 QUEUE_SetWakeBit( queue, QS_PAINT );
1266 QUEUE_Unlock( queue );
1270 /***********************************************************************
1271 * QUEUE_DecPaintCount
1273 void QUEUE_DecPaintCount( HQUEUE16 hQueue )
1275 MESSAGEQUEUE *queue;
1277 if (!(queue = (MESSAGEQUEUE *)QUEUE_Lock( hQueue ))) return;
1278 queue->wPaintCount--;
1279 if (!queue->wPaintCount) queue->wakeBits &= ~QS_PAINT;
1280 QUEUE_Unlock( queue );
1284 /***********************************************************************
1285 * QUEUE_IncTimerCount
1287 void QUEUE_IncTimerCount( HQUEUE16 hQueue )
1289 MESSAGEQUEUE *queue;
1291 if (!(queue = (MESSAGEQUEUE *)QUEUE_Lock( hQueue ))) return;
1292 queue->wTimerCount++;
1293 QUEUE_SetWakeBit( queue, QS_TIMER );
1294 QUEUE_Unlock( queue );
1298 /***********************************************************************
1299 * QUEUE_DecTimerCount
1301 void QUEUE_DecTimerCount( HQUEUE16 hQueue )
1303 MESSAGEQUEUE *queue;
1305 if (!(queue = (MESSAGEQUEUE *)QUEUE_Lock( hQueue ))) return;
1306 queue->wTimerCount--;
1307 if (!queue->wTimerCount) queue->wakeBits &= ~QS_TIMER;
1308 QUEUE_Unlock( queue );
1312 /***********************************************************************
1313 * PostQuitMessage16 (USER.6)
1315 void WINAPI PostQuitMessage16( INT16 exitCode )
1317 PostQuitMessage( exitCode );
1321 /***********************************************************************
1322 * PostQuitMessage32 (USER32.421)
1324 * PostQuitMessage() posts a message to the system requesting an
1325 * application to terminate execution. As a result of this function,
1326 * the WM_QUIT message is posted to the application, and
1327 * PostQuitMessage() returns immediately. The exitCode parameter
1328 * specifies an application-defined exit code, which appears in the
1329 * _wParam_ parameter of the WM_QUIT message posted to the application.
1335 void WINAPI PostQuitMessage( INT exitCode )
1337 MESSAGEQUEUE *queue;
1339 if (!(queue = (MESSAGEQUEUE *)QUEUE_Lock( GetFastQueue16() ))) return;
1340 queue->wPostQMsg = TRUE;
1341 queue->wExitCode = (WORD)exitCode;
1342 QUEUE_Unlock( queue );
1346 /***********************************************************************
1347 * GetWindowTask16 (USER.224)
1349 HTASK16 WINAPI GetWindowTask16( HWND16 hwnd )
1352 WND *wndPtr = WIN_FindWndPtr( hwnd );
1354 if (!wndPtr) return 0;
1355 retvalue = QUEUE_GetQueueTask( wndPtr->hmemTaskQ );
1356 WIN_ReleaseWndPtr(wndPtr);
1360 /***********************************************************************
1361 * GetWindowThreadProcessId (USER32.313)
1363 DWORD WINAPI GetWindowThreadProcessId( HWND hwnd, LPDWORD process )
1366 MESSAGEQUEUE *queue;
1368 WND *wndPtr = WIN_FindWndPtr( hwnd );
1369 if (!wndPtr) return 0;
1371 queue = QUEUE_Lock( wndPtr->hmemTaskQ );
1372 WIN_ReleaseWndPtr(wndPtr);
1374 if (!queue) return 0;
1376 if ( process ) *process = (DWORD)queue->teb->process->server_pid;
1377 retvalue = (DWORD)queue->teb->tid;
1379 QUEUE_Unlock( queue );
1384 /***********************************************************************
1385 * SetMessageQueue16 (USER.266)
1387 BOOL16 WINAPI SetMessageQueue16( INT16 size )
1389 return SetMessageQueue( size );
1393 /***********************************************************************
1394 * SetMessageQueue32 (USER32.494)
1396 BOOL WINAPI SetMessageQueue( INT size )
1398 /* now obsolete the message queue will be expanded dynamically
1401 /* access the queue to create it if it's not existing */
1407 /***********************************************************************
1408 * InitThreadInput (USER.409)
1410 HQUEUE16 WINAPI InitThreadInput16( WORD unknown, WORD flags )
1413 MESSAGEQUEUE *queuePtr;
1415 TEB *teb = NtCurrentTeb();
1420 hQueue = teb->queue;
1424 /* Create thread message queue */
1425 if( !(hQueue = QUEUE_CreateMsgQueue( TRUE )))
1427 WARN_(msg)("failed!\n");
1431 /* Link new queue into list */
1432 queuePtr = (MESSAGEQUEUE *)QUEUE_Lock( hQueue );
1433 queuePtr->teb = NtCurrentTeb();
1435 HeapLock( SystemHeap ); /* FIXME: a bit overkill */
1436 SetThreadQueue16( 0, hQueue );
1437 teb->queue = hQueue;
1439 queuePtr->next = hFirstQueue;
1440 hFirstQueue = hQueue;
1441 HeapUnlock( SystemHeap );
1443 QUEUE_Unlock( queuePtr );
1449 /***********************************************************************
1450 * GetQueueStatus16 (USER.334)
1452 DWORD WINAPI GetQueueStatus16( UINT16 flags )
1454 MESSAGEQUEUE *queue;
1457 if (!(queue = (MESSAGEQUEUE *)QUEUE_Lock( GetFastQueue16() ))) return 0;
1458 ret = MAKELONG( queue->changeBits, queue->wakeBits );
1459 queue->changeBits = 0;
1460 QUEUE_Unlock( queue );
1462 return ret & MAKELONG( flags, flags );
1465 /***********************************************************************
1466 * GetQueueStatus32 (USER32.283)
1468 DWORD WINAPI GetQueueStatus( UINT flags )
1470 MESSAGEQUEUE *queue;
1473 if (!(queue = (MESSAGEQUEUE *)QUEUE_Lock( GetFastQueue16() ))) return 0;
1474 ret = MAKELONG( queue->changeBits, queue->wakeBits );
1475 queue->changeBits = 0;
1476 QUEUE_Unlock( queue );
1478 return ret & MAKELONG( flags, flags );
1482 /***********************************************************************
1483 * GetInputState16 (USER.335)
1485 BOOL16 WINAPI GetInputState16(void)
1487 return GetInputState();
1490 /***********************************************************************
1491 * WaitForInputIdle (USER32.577)
1493 DWORD WINAPI WaitForInputIdle (HANDLE hProcess, DWORD dwTimeOut)
1495 FIXME_(msg)("(hProcess=%d, dwTimeOut=%ld): stub\n", hProcess, dwTimeOut);
1497 return WAIT_TIMEOUT;
1501 /***********************************************************************
1502 * GetInputState32 (USER32.244)
1504 BOOL WINAPI GetInputState(void)
1506 MESSAGEQUEUE *queue;
1509 if (!(queue = (MESSAGEQUEUE *)QUEUE_Lock( GetFastQueue16() )))
1511 ret = queue->wakeBits & (QS_KEY | QS_MOUSEBUTTON);
1512 QUEUE_Unlock( queue );
1517 /***********************************************************************
1518 * UserYield (USER.332)
1520 void WINAPI UserYield16(void)
1522 MESSAGEQUEUE *queue;
1524 /* Handle sent messages */
1525 queue = (MESSAGEQUEUE *)QUEUE_Lock( GetFastQueue16() );
1527 while (queue && (queue->wakeBits & QS_SENDMESSAGE))
1528 QUEUE_ReceiveMessage( queue );
1530 QUEUE_Unlock( queue );
1533 if ( THREAD_IsWin16( NtCurrentTeb() ) )
1538 /* Handle sent messages again */
1539 queue = (MESSAGEQUEUE *)QUEUE_Lock( GetFastQueue16() );
1541 while (queue && (queue->wakeBits & QS_SENDMESSAGE))
1542 QUEUE_ReceiveMessage( queue );
1544 QUEUE_Unlock( queue );
1547 /***********************************************************************
1548 * GetMessagePos (USER.119) (USER32.272)
1550 * The GetMessagePos() function returns a long value representing a
1551 * cursor position, in screen coordinates, when the last message
1552 * retrieved by the GetMessage() function occurs. The x-coordinate is
1553 * in the low-order word of the return value, the y-coordinate is in
1554 * the high-order word. The application can use the MAKEPOINT()
1555 * macro to obtain a POINT structure from the return value.
1557 * For the current cursor position, use GetCursorPos().
1561 * Cursor position of last message on success, zero on failure.
1568 DWORD WINAPI GetMessagePos(void)
1570 MESSAGEQUEUE *queue;
1573 if (!(queue = (MESSAGEQUEUE *)QUEUE_Lock( GetFastQueue16() ))) return 0;
1574 ret = queue->GetMessagePosVal;
1575 QUEUE_Unlock( queue );
1581 /***********************************************************************
1582 * GetMessageTime (USER.120) (USER32.273)
1584 * GetMessageTime() returns the message time for the last message
1585 * retrieved by the function. The time is measured in milliseconds with
1586 * the same offset as GetTickCount().
1588 * Since the tick count wraps, this is only useful for moderately short
1589 * relative time comparisons.
1593 * Time of last message on success, zero on failure.
1600 LONG WINAPI GetMessageTime(void)
1602 MESSAGEQUEUE *queue;
1605 if (!(queue = (MESSAGEQUEUE *)QUEUE_Lock( GetFastQueue16() ))) return 0;
1606 ret = queue->GetMessageTimeVal;
1607 QUEUE_Unlock( queue );
1613 /***********************************************************************
1614 * GetMessageExtraInfo (USER.288) (USER32.271)
1616 LONG WINAPI GetMessageExtraInfo(void)
1618 MESSAGEQUEUE *queue;
1621 if (!(queue = (MESSAGEQUEUE *)QUEUE_Lock( GetFastQueue16() ))) return 0;
1622 ret = queue->GetMessageExtraInfoVal;
1623 QUEUE_Unlock( queue );