| /* * Message queues related functions |
| * |
| * Copyright 1993, 1994 Alexandre Julliard |
| */ |
| |
| #include <string.h> |
| #include <signal.h> |
| #include <assert.h> |
| #include "windef.h" |
| #include "wingdi.h" |
| #include "winerror.h" |
| #include "wine/winbase16.h" |
| #include "wine/winuser16.h" |
| #include "queue.h" |
| #include "task.h" |
| #include "win.h" |
| #include "hook.h" |
| #include "heap.h" |
| #include "thread.h" |
| #include "debugtools.h" |
| #include "server.h" |
| #include "spy.h" |
| |
| DECLARE_DEBUG_CHANNEL(msg); |
| DECLARE_DEBUG_CHANNEL(sendmsg); |
| |
| #define MAX_QUEUE_SIZE 120 /* Max. size of a message queue */ |
| |
| static HQUEUE16 hFirstQueue = 0; |
| static HQUEUE16 hExitingQueue = 0; |
| static HQUEUE16 hmemSysMsgQueue = 0; |
| static MESSAGEQUEUE *sysMsgQueue = NULL; |
| static PERQUEUEDATA *pQDataWin16 = NULL; /* Global perQData for Win16 tasks */ |
| |
| static MESSAGEQUEUE *pMouseQueue = NULL; /* Queue for last mouse message */ |
| static MESSAGEQUEUE *pKbdQueue = NULL; /* Queue for last kbd message */ |
| |
| HQUEUE16 hCursorQueue = 0; |
| HQUEUE16 hActiveQueue = 0; |
| |
| |
| /*********************************************************************** |
| * PERQDATA_CreateInstance |
| * |
| * Creates an instance of a reference counted PERQUEUEDATA element |
| * for the message queue. perQData is stored globally for 16 bit tasks. |
| * |
| * Note: We don't implement perQdata exactly the same way Windows does. |
| * Each perQData element is reference counted since it may be potentially |
| * shared by multiple message Queues (via AttachThreadInput). |
| * We only store the current values for Active, Capture and focus windows |
| * currently. |
| */ |
| PERQUEUEDATA * PERQDATA_CreateInstance( ) |
| { |
| PERQUEUEDATA *pQData; |
| |
| BOOL16 bIsWin16 = 0; |
| |
| TRACE_(msg)("()\n"); |
| |
| /* Share a single instance of perQData for all 16 bit tasks */ |
| if ( ( bIsWin16 = THREAD_IsWin16( NtCurrentTeb() ) ) ) |
| { |
| /* If previously allocated, just bump up ref count */ |
| if ( pQDataWin16 ) |
| { |
| PERQDATA_Addref( pQDataWin16 ); |
| return pQDataWin16; |
| } |
| } |
| |
| /* Allocate PERQUEUEDATA from the system heap */ |
| if (!( pQData = (PERQUEUEDATA *) HeapAlloc( SystemHeap, 0, |
| sizeof(PERQUEUEDATA) ) )) |
| return 0; |
| |
| /* Initialize */ |
| pQData->hWndCapture = pQData->hWndFocus = pQData->hWndActive = 0; |
| pQData->ulRefCount = 1; |
| pQData->nCaptureHT = HTCLIENT; |
| |
| /* Note: We have an independent critical section for the per queue data |
| * since this may be shared by different threads. see AttachThreadInput() |
| */ |
| InitializeCriticalSection( &pQData->cSection ); |
| /* FIXME: not all per queue data critical sections should be global */ |
| MakeCriticalSectionGlobal( &pQData->cSection ); |
| |
| /* Save perQData globally for 16 bit tasks */ |
| if ( bIsWin16 ) |
| pQDataWin16 = pQData; |
| |
| return pQData; |
| } |
| |
| |
| /*********************************************************************** |
| * PERQDATA_Addref |
| * |
| * Increment reference count for the PERQUEUEDATA instance |
| * Returns reference count for debugging purposes |
| */ |
| ULONG PERQDATA_Addref( PERQUEUEDATA *pQData ) |
| { |
| assert(pQData != 0 ); |
| TRACE_(msg)("(): current refcount %lu ...\n", pQData->ulRefCount); |
| |
| EnterCriticalSection( &pQData->cSection ); |
| ++pQData->ulRefCount; |
| LeaveCriticalSection( &pQData->cSection ); |
| |
| return pQData->ulRefCount; |
| } |
| |
| |
| /*********************************************************************** |
| * PERQDATA_Release |
| * |
| * Release a reference to a PERQUEUEDATA instance. |
| * Destroy the instance if no more references exist |
| * Returns reference count for debugging purposes |
| */ |
| ULONG PERQDATA_Release( PERQUEUEDATA *pQData ) |
| { |
| assert(pQData != 0 ); |
| TRACE_(msg)("(): current refcount %lu ...\n", |
| (LONG)pQData->ulRefCount ); |
| |
| EnterCriticalSection( &pQData->cSection ); |
| if ( --pQData->ulRefCount == 0 ) |
| { |
| LeaveCriticalSection( &pQData->cSection ); |
| DeleteCriticalSection( &pQData->cSection ); |
| |
| TRACE_(msg)("(): deleting PERQUEUEDATA instance ...\n" ); |
| |
| /* Deleting our global 16 bit perQData? */ |
| if ( pQData == pQDataWin16 ) |
| pQDataWin16 = 0; |
| |
| /* Free the PERQUEUEDATA instance */ |
| HeapFree( SystemHeap, 0, pQData ); |
| |
| return 0; |
| } |
| LeaveCriticalSection( &pQData->cSection ); |
| |
| return pQData->ulRefCount; |
| } |
| |
| |
| /*********************************************************************** |
| * PERQDATA_GetFocusWnd |
| * |
| * Get the focus hwnd member in a threadsafe manner |
| */ |
| HWND PERQDATA_GetFocusWnd( PERQUEUEDATA *pQData ) |
| { |
| HWND hWndFocus; |
| assert(pQData != 0 ); |
| |
| EnterCriticalSection( &pQData->cSection ); |
| hWndFocus = pQData->hWndFocus; |
| LeaveCriticalSection( &pQData->cSection ); |
| |
| return hWndFocus; |
| } |
| |
| |
| /*********************************************************************** |
| * PERQDATA_SetFocusWnd |
| * |
| * Set the focus hwnd member in a threadsafe manner |
| */ |
| HWND PERQDATA_SetFocusWnd( PERQUEUEDATA *pQData, HWND hWndFocus ) |
| { |
| HWND hWndFocusPrv; |
| assert(pQData != 0 ); |
| |
| EnterCriticalSection( &pQData->cSection ); |
| hWndFocusPrv = pQData->hWndFocus; |
| pQData->hWndFocus = hWndFocus; |
| LeaveCriticalSection( &pQData->cSection ); |
| |
| return hWndFocusPrv; |
| } |
| |
| |
| /*********************************************************************** |
| * PERQDATA_GetActiveWnd |
| * |
| * Get the active hwnd member in a threadsafe manner |
| */ |
| HWND PERQDATA_GetActiveWnd( PERQUEUEDATA *pQData ) |
| { |
| HWND hWndActive; |
| assert(pQData != 0 ); |
| |
| EnterCriticalSection( &pQData->cSection ); |
| hWndActive = pQData->hWndActive; |
| LeaveCriticalSection( &pQData->cSection ); |
| |
| return hWndActive; |
| } |
| |
| |
| /*********************************************************************** |
| * PERQDATA_SetActiveWnd |
| * |
| * Set the active focus hwnd member in a threadsafe manner |
| */ |
| HWND PERQDATA_SetActiveWnd( PERQUEUEDATA *pQData, HWND hWndActive ) |
| { |
| HWND hWndActivePrv; |
| assert(pQData != 0 ); |
| |
| EnterCriticalSection( &pQData->cSection ); |
| hWndActivePrv = pQData->hWndActive; |
| pQData->hWndActive = hWndActive; |
| LeaveCriticalSection( &pQData->cSection ); |
| |
| return hWndActivePrv; |
| } |
| |
| |
| /*********************************************************************** |
| * PERQDATA_GetCaptureWnd |
| * |
| * Get the capture hwnd member in a threadsafe manner |
| */ |
| HWND PERQDATA_GetCaptureWnd( PERQUEUEDATA *pQData ) |
| { |
| HWND hWndCapture; |
| assert(pQData != 0 ); |
| |
| EnterCriticalSection( &pQData->cSection ); |
| hWndCapture = pQData->hWndCapture; |
| LeaveCriticalSection( &pQData->cSection ); |
| |
| return hWndCapture; |
| } |
| |
| |
| /*********************************************************************** |
| * PERQDATA_SetCaptureWnd |
| * |
| * Set the capture hwnd member in a threadsafe manner |
| */ |
| HWND PERQDATA_SetCaptureWnd( PERQUEUEDATA *pQData, HWND hWndCapture ) |
| { |
| HWND hWndCapturePrv; |
| assert(pQData != 0 ); |
| |
| EnterCriticalSection( &pQData->cSection ); |
| hWndCapturePrv = pQData->hWndCapture; |
| pQData->hWndCapture = hWndCapture; |
| LeaveCriticalSection( &pQData->cSection ); |
| |
| return hWndCapturePrv; |
| } |
| |
| |
| /*********************************************************************** |
| * PERQDATA_GetCaptureInfo |
| * |
| * Get the capture info member in a threadsafe manner |
| */ |
| INT16 PERQDATA_GetCaptureInfo( PERQUEUEDATA *pQData ) |
| { |
| INT16 nCaptureHT; |
| assert(pQData != 0 ); |
| |
| EnterCriticalSection( &pQData->cSection ); |
| nCaptureHT = pQData->nCaptureHT; |
| LeaveCriticalSection( &pQData->cSection ); |
| |
| return nCaptureHT; |
| } |
| |
| |
| /*********************************************************************** |
| * PERQDATA_SetCaptureInfo |
| * |
| * Set the capture info member in a threadsafe manner |
| */ |
| INT16 PERQDATA_SetCaptureInfo( PERQUEUEDATA *pQData, INT16 nCaptureHT ) |
| { |
| INT16 nCaptureHTPrv; |
| assert(pQData != 0 ); |
| |
| EnterCriticalSection( &pQData->cSection ); |
| nCaptureHTPrv = pQData->nCaptureHT; |
| pQData->nCaptureHT = nCaptureHT; |
| LeaveCriticalSection( &pQData->cSection ); |
| |
| return nCaptureHTPrv; |
| } |
| |
| |
| /*********************************************************************** |
| * QUEUE_Lock |
| * |
| * Function for getting a 32 bit pointer on queue structure. For thread |
| * safeness programmers should use this function instead of GlobalLock to |
| * retrieve a pointer on the structure. QUEUE_Unlock should also be called |
| * when access to the queue structure is not required anymore. |
| */ |
| MESSAGEQUEUE *QUEUE_Lock( HQUEUE16 hQueue ) |
| { |
| MESSAGEQUEUE *queue; |
| |
| HeapLock( SystemHeap ); /* FIXME: a bit overkill */ |
| queue = GlobalLock16( hQueue ); |
| if ( !queue || (queue->magic != QUEUE_MAGIC) ) |
| { |
| HeapUnlock( SystemHeap ); |
| return NULL; |
| } |
| |
| queue->lockCount++; |
| HeapUnlock( SystemHeap ); |
| return queue; |
| } |
| |
| |
| /*********************************************************************** |
| * QUEUE_Unlock |
| * |
| * Use with QUEUE_Lock to get a thread safe access to message queue |
| * structure |
| */ |
| void QUEUE_Unlock( MESSAGEQUEUE *queue ) |
| { |
| if (queue) |
| { |
| HeapLock( SystemHeap ); /* FIXME: a bit overkill */ |
| |
| if ( --queue->lockCount == 0 ) |
| { |
| DeleteCriticalSection ( &queue->cSection ); |
| if (queue->server_queue) |
| CloseHandle( queue->server_queue ); |
| GlobalFree16( queue->self ); |
| } |
| |
| HeapUnlock( SystemHeap ); |
| } |
| } |
| |
| |
| /*********************************************************************** |
| * QUEUE_DumpQueue |
| */ |
| void QUEUE_DumpQueue( HQUEUE16 hQueue ) |
| { |
| MESSAGEQUEUE *pq; |
| |
| if (!(pq = (MESSAGEQUEUE*) QUEUE_Lock( hQueue )) ) |
| { |
| WARN_(msg)("%04x is not a queue handle\n", hQueue ); |
| return; |
| } |
| |
| DPRINTF( "next: %12.4x Intertask SendMessage:\n" |
| "thread: %10p ----------------------\n" |
| "firstMsg: %8p smWaiting: %10p\n" |
| "lastMsg: %8p smPending: %10p\n" |
| "msgCount: %8.4x smProcessing: %10p\n" |
| "lockCount: %7.4x\n" |
| "wWinVer: %9.4x\n" |
| "paints: %10.4x\n" |
| "timers: %10.4x\n" |
| "wakeBits: %8.4x\n" |
| "wakeMask: %8.4x\n" |
| "hCurHook: %8.4x\n", |
| pq->next, pq->teb, pq->firstMsg, pq->smWaiting, pq->lastMsg, |
| pq->smPending, pq->msgCount, pq->smProcessing, |
| (unsigned)pq->lockCount, pq->wWinVersion, |
| pq->wPaintCount, pq->wTimerCount, |
| pq->wakeBits, pq->wakeMask, pq->hCurHook); |
| |
| QUEUE_Unlock( pq ); |
| } |
| |
| |
| /*********************************************************************** |
| * QUEUE_WalkQueues |
| */ |
| void QUEUE_WalkQueues(void) |
| { |
| char module[10]; |
| HQUEUE16 hQueue = hFirstQueue; |
| |
| DPRINTF( "Queue Msgs Thread Task Module\n" ); |
| while (hQueue) |
| { |
| MESSAGEQUEUE *queue = (MESSAGEQUEUE *)QUEUE_Lock( hQueue ); |
| if (!queue) |
| { |
| WARN_(msg)("Bad queue handle %04x\n", hQueue ); |
| return; |
| } |
| if (!GetModuleName16( queue->teb->htask16, module, sizeof(module ))) |
| strcpy( module, "???" ); |
| DPRINTF( "%04x %4d %p %04x %s\n", hQueue,queue->msgCount, |
| queue->teb, queue->teb->htask16, module ); |
| hQueue = queue->next; |
| QUEUE_Unlock( queue ); |
| } |
| DPRINTF( "\n" ); |
| } |
| |
| |
| /*********************************************************************** |
| * QUEUE_IsExitingQueue |
| */ |
| BOOL QUEUE_IsExitingQueue( HQUEUE16 hQueue ) |
| { |
| return (hExitingQueue && (hQueue == hExitingQueue)); |
| } |
| |
| |
| /*********************************************************************** |
| * QUEUE_SetExitingQueue |
| */ |
| void QUEUE_SetExitingQueue( HQUEUE16 hQueue ) |
| { |
| hExitingQueue = hQueue; |
| } |
| |
| |
| /*********************************************************************** |
| * QUEUE_CreateMsgQueue |
| * |
| * Creates a message queue. Doesn't link it into queue list! |
| */ |
| static HQUEUE16 QUEUE_CreateMsgQueue( BOOL16 bCreatePerQData ) |
| { |
| HQUEUE16 hQueue; |
| HANDLE handle = -1; |
| MESSAGEQUEUE * msgQueue; |
| TDB *pTask = (TDB *)GlobalLock16( GetCurrentTask() ); |
| |
| TRACE_(msg)("(): Creating message queue...\n"); |
| |
| if (!(hQueue = GlobalAlloc16( GMEM_FIXED | GMEM_ZEROINIT, |
| sizeof(MESSAGEQUEUE) ))) |
| return 0; |
| |
| msgQueue = (MESSAGEQUEUE *) GlobalLock16( hQueue ); |
| if ( !msgQueue ) |
| return 0; |
| |
| SERVER_START_REQ |
| { |
| struct get_msg_queue_request *req = server_alloc_req( sizeof(*req), 0 ); |
| if (!server_call( REQ_GET_MSG_QUEUE )) handle = req->handle; |
| } |
| SERVER_END_REQ; |
| if (handle == -1) |
| { |
| ERR_(msg)("Cannot get thread queue"); |
| GlobalFree16( hQueue ); |
| return 0; |
| } |
| msgQueue->server_queue = handle; |
| msgQueue->server_queue = ConvertToGlobalHandle( msgQueue->server_queue ); |
| |
| msgQueue->self = hQueue; |
| msgQueue->wakeBits = msgQueue->changeBits = 0; |
| msgQueue->wWinVersion = pTask ? pTask->version : 0; |
| |
| InitializeCriticalSection( &msgQueue->cSection ); |
| MakeCriticalSectionGlobal( &msgQueue->cSection ); |
| |
| msgQueue->lockCount = 1; |
| msgQueue->magic = QUEUE_MAGIC; |
| |
| /* Create and initialize our per queue data */ |
| msgQueue->pQData = bCreatePerQData ? PERQDATA_CreateInstance() : NULL; |
| |
| return hQueue; |
| } |
| |
| |
| /*********************************************************************** |
| * QUEUE_FlushMessage |
| * |
| * Try to reply to all pending sent messages on exit. |
| */ |
| static void QUEUE_FlushMessages( MESSAGEQUEUE *queue ) |
| { |
| SMSG *smsg; |
| MESSAGEQUEUE *senderQ = 0; |
| |
| if( queue ) |
| { |
| EnterCriticalSection( &queue->cSection ); |
| |
| /* empty the list of pending SendMessage waiting to be received */ |
| while (queue->smPending) |
| { |
| smsg = QUEUE_RemoveSMSG( queue, SM_PENDING_LIST, 0); |
| |
| senderQ = (MESSAGEQUEUE*)QUEUE_Lock( smsg->hSrcQueue ); |
| if ( !senderQ ) |
| continue; |
| |
| /* return 0, to unblock other thread */ |
| smsg->lResult = 0; |
| smsg->flags |= SMSG_HAVE_RESULT; |
| QUEUE_SetWakeBit( senderQ, QS_SMRESULT); |
| |
| QUEUE_Unlock( senderQ ); |
| } |
| |
| QUEUE_ClearWakeBit( queue, QS_SENDMESSAGE ); |
| |
| LeaveCriticalSection( &queue->cSection ); |
| } |
| } |
| |
| |
| /*********************************************************************** |
| * QUEUE_DeleteMsgQueue |
| * |
| * Unlinks and deletes a message queue. |
| * |
| * Note: We need to mask asynchronous events to make sure PostMessage works |
| * even in the signal handler. |
| */ |
| BOOL QUEUE_DeleteMsgQueue( HQUEUE16 hQueue ) |
| { |
| MESSAGEQUEUE * msgQueue = (MESSAGEQUEUE*)QUEUE_Lock(hQueue); |
| HQUEUE16 *pPrev; |
| |
| TRACE_(msg)("(): Deleting message queue %04x\n", hQueue); |
| |
| if (!hQueue || !msgQueue) |
| { |
| ERR_(msg)("invalid argument.\n"); |
| return 0; |
| } |
| |
| msgQueue->magic = 0; |
| |
| if( hCursorQueue == hQueue ) hCursorQueue = 0; |
| if( hActiveQueue == hQueue ) hActiveQueue = 0; |
| |
| /* flush sent messages */ |
| QUEUE_FlushMessages( msgQueue ); |
| |
| HeapLock( SystemHeap ); /* FIXME: a bit overkill */ |
| |
| /* Release per queue data if present */ |
| if ( msgQueue->pQData ) |
| { |
| PERQDATA_Release( msgQueue->pQData ); |
| msgQueue->pQData = 0; |
| } |
| |
| /* remove the message queue from the global link list */ |
| pPrev = &hFirstQueue; |
| while (*pPrev && (*pPrev != hQueue)) |
| { |
| MESSAGEQUEUE *msgQ = (MESSAGEQUEUE*)GlobalLock16(*pPrev); |
| |
| /* sanity check */ |
| if ( !msgQ || (msgQ->magic != QUEUE_MAGIC) ) |
| { |
| /* HQUEUE link list is corrupted, try to exit gracefully */ |
| ERR_(msg)("HQUEUE link list corrupted!\n"); |
| pPrev = 0; |
| break; |
| } |
| pPrev = &msgQ->next; |
| } |
| if (pPrev && *pPrev) *pPrev = msgQueue->next; |
| msgQueue->self = 0; |
| |
| HeapUnlock( SystemHeap ); |
| |
| /* free up resource used by MESSAGEQUEUE structure */ |
| msgQueue->lockCount--; |
| QUEUE_Unlock( msgQueue ); |
| |
| return 1; |
| } |
| |
| |
| /*********************************************************************** |
| * QUEUE_CreateSysMsgQueue |
| * |
| * Create the system message queue, and set the double-click speed. |
| * Must be called only once. |
| */ |
| BOOL QUEUE_CreateSysMsgQueue( int size ) |
| { |
| /* Note: We dont need perQ data for the system message queue */ |
| if (!(hmemSysMsgQueue = QUEUE_CreateMsgQueue( FALSE ))) |
| return FALSE; |
| |
| sysMsgQueue = (MESSAGEQUEUE *) GlobalLock16( hmemSysMsgQueue ); |
| return TRUE; |
| } |
| |
| |
| /*********************************************************************** |
| * QUEUE_GetSysQueue |
| */ |
| MESSAGEQUEUE *QUEUE_GetSysQueue(void) |
| { |
| return sysMsgQueue; |
| } |
| |
| |
| /*********************************************************************** |
| * QUEUE_SetWakeBit |
| * |
| * See "Windows Internals", p.449 |
| */ |
| void QUEUE_SetWakeBit( MESSAGEQUEUE *queue, WORD bit ) |
| { |
| TRACE_(msg)("queue = %04x (wm=%04x), bit = %04x\n", |
| queue->self, queue->wakeMask, bit ); |
| |
| if (bit & QS_MOUSE) pMouseQueue = queue; |
| if (bit & QS_KEY) pKbdQueue = queue; |
| queue->changeBits |= bit; |
| queue->wakeBits |= bit; |
| if (queue->wakeMask & bit) |
| { |
| queue->wakeMask = 0; |
| |
| /* Wake up thread waiting for message */ |
| if ( THREAD_IsWin16( queue->teb ) ) |
| { |
| int iWndsLock = WIN_SuspendWndsLock(); |
| PostEvent16( queue->teb->htask16 ); |
| WIN_RestoreWndsLock( iWndsLock ); |
| } |
| else |
| { |
| SERVER_START_REQ |
| { |
| struct wake_queue_request *req = server_alloc_req( sizeof(*req), 0 ); |
| req->handle = queue->server_queue; |
| req->bits = bit; |
| server_call( REQ_WAKE_QUEUE ); |
| } |
| SERVER_END_REQ; |
| } |
| } |
| } |
| |
| |
| /*********************************************************************** |
| * QUEUE_ClearWakeBit |
| */ |
| void QUEUE_ClearWakeBit( MESSAGEQUEUE *queue, WORD bit ) |
| { |
| queue->changeBits &= ~bit; |
| queue->wakeBits &= ~bit; |
| } |
| |
| |
| /*********************************************************************** |
| * QUEUE_WaitBits |
| * |
| * See "Windows Internals", p.447 |
| * |
| * return values: |
| * 0 if exit with timeout |
| * 1 otherwise |
| */ |
| int QUEUE_WaitBits( WORD bits, DWORD timeout ) |
| { |
| MESSAGEQUEUE *queue; |
| DWORD curTime = 0; |
| HQUEUE16 hQueue; |
| |
| TRACE_(msg)("q %04x waiting for %04x\n", GetFastQueue16(), bits); |
| |
| if ( THREAD_IsWin16( NtCurrentTeb() ) && (timeout != INFINITE) ) |
| curTime = GetTickCount(); |
| |
| hQueue = GetFastQueue16(); |
| if (!(queue = (MESSAGEQUEUE *)QUEUE_Lock( hQueue ))) return 0; |
| |
| for (;;) |
| { |
| if (queue->changeBits & bits) |
| { |
| /* One of the bits is set; we can return */ |
| queue->wakeMask = 0; |
| QUEUE_Unlock( queue ); |
| return 1; |
| } |
| if (queue->wakeBits & QS_SENDMESSAGE) |
| { |
| /* Process the sent message immediately */ |
| |
| queue->wakeMask = 0; |
| QUEUE_ReceiveMessage( queue ); |
| continue; /* nested sm crux */ |
| } |
| |
| queue->wakeMask = bits | QS_SENDMESSAGE; |
| if(queue->changeBits & bits) |
| { |
| continue; |
| } |
| |
| TRACE_(msg)("%04x) wakeMask is %04x, waiting\n", queue->self, queue->wakeMask); |
| |
| if ( !THREAD_IsWin16( NtCurrentTeb() ) ) |
| { |
| BOOL bHasWin16Lock; |
| DWORD dwlc; |
| |
| if ( (bHasWin16Lock = _ConfirmWin16Lock()) ) |
| { |
| TRACE_(msg)("bHasWin16Lock=TRUE\n"); |
| ReleaseThunkLock( &dwlc ); |
| } |
| |
| WaitForSingleObject( queue->server_queue, timeout ); |
| |
| if ( bHasWin16Lock ) |
| { |
| RestoreThunkLock( dwlc ); |
| } |
| } |
| else |
| { |
| if ( timeout == INFINITE ) |
| WaitEvent16( 0 ); /* win 16 thread, use WaitEvent */ |
| else |
| { |
| /* check for timeout, then give control to other tasks */ |
| if (GetTickCount() - curTime > timeout) |
| { |
| |
| QUEUE_Unlock( queue ); |
| return 0; /* exit with timeout */ |
| } |
| Yield16(); |
| } |
| } |
| } |
| } |
| |
| |
| /*********************************************************************** |
| * QUEUE_AddSMSG |
| * |
| * This routine is called when a SMSG need to be added to one of the three |
| * SM list. (SM_PROCESSING_LIST, SM_PENDING_LIST, SM_WAITING_LIST) |
| */ |
| BOOL QUEUE_AddSMSG( MESSAGEQUEUE *queue, int list, SMSG *smsg ) |
| { |
| TRACE_(sendmsg)("queue=%x, list=%d, smsg=%p msg=%s\n", queue->self, list, |
| smsg, SPY_GetMsgName(smsg->msg)); |
| |
| switch (list) |
| { |
| case SM_PROCESSING_LIST: |
| /* don't need to be thread safe, only accessed by the |
| thread associated with the sender queue */ |
| smsg->nextProcessing = queue->smProcessing; |
| queue->smProcessing = smsg; |
| break; |
| |
| case SM_WAITING_LIST: |
| /* don't need to be thread safe, only accessed by the |
| thread associated with the receiver queue */ |
| smsg->nextWaiting = queue->smWaiting; |
| queue->smWaiting = smsg; |
| break; |
| |
| case SM_PENDING_LIST: |
| { |
| /* make it thread safe, could be accessed by the sender and |
| receiver thread */ |
| SMSG **prev; |
| |
| EnterCriticalSection( &queue->cSection ); |
| smsg->nextPending = NULL; |
| prev = &queue->smPending; |
| while ( *prev ) |
| prev = &(*prev)->nextPending; |
| *prev = smsg; |
| LeaveCriticalSection( &queue->cSection ); |
| |
| QUEUE_SetWakeBit( queue, QS_SENDMESSAGE ); |
| break; |
| } |
| |
| default: |
| ERR_(sendmsg)("Invalid list: %d", list); |
| break; |
| } |
| |
| return TRUE; |
| } |
| |
| |
| /*********************************************************************** |
| * QUEUE_RemoveSMSG |
| * |
| * This routine is called when a SMSG needs to be removed from one of the three |
| * SM lists (SM_PROCESSING_LIST, SM_PENDING_LIST, SM_WAITING_LIST). |
| * If smsg == 0, remove the first smsg from the specified list |
| */ |
| SMSG *QUEUE_RemoveSMSG( MESSAGEQUEUE *queue, int list, SMSG *smsg ) |
| { |
| |
| switch (list) |
| { |
| case SM_PROCESSING_LIST: |
| /* don't need to be thread safe, only accessed by the |
| thread associated with the sender queue */ |
| |
| /* if smsg is equal to null, it means the first in the list */ |
| if (!smsg) |
| smsg = queue->smProcessing; |
| |
| TRACE_(sendmsg)("queue=%x, list=%d, smsg=%p msg=%s\n", queue->self, list, |
| smsg, SPY_GetMsgName(smsg->msg)); |
| /* In fact SM_PROCESSING_LIST is a stack, and smsg |
| should be always at the top of the list */ |
| if ( (smsg != queue->smProcessing) || !queue->smProcessing ) |
| { |
| ERR_(sendmsg)("smsg not at the top of Processing list, smsg=0x%p queue=0x%p\n", smsg, queue); |
| return 0; |
| } |
| else |
| { |
| queue->smProcessing = smsg->nextProcessing; |
| smsg->nextProcessing = 0; |
| } |
| return smsg; |
| |
| case SM_WAITING_LIST: |
| /* don't need to be thread safe, only accessed by the |
| thread associated with the receiver queue */ |
| |
| /* if smsg is equal to null, it means the first in the list */ |
| if (!smsg) |
| smsg = queue->smWaiting; |
| |
| TRACE_(sendmsg)("queue=%x, list=%d, smsg=%p msg=%s\n", queue->self, list, |
| smsg, SPY_GetMsgName(smsg->msg)); |
| /* In fact SM_WAITING_LIST is a stack, and smsg |
| should be always at the top of the list */ |
| if ( (smsg != queue->smWaiting) || !queue->smWaiting ) |
| { |
| ERR_(sendmsg)("smsg not at the top of Waiting list, smsg=0x%p queue=0x%p\n", smsg, queue); |
| return 0; |
| } |
| else |
| { |
| queue->smWaiting = smsg->nextWaiting; |
| smsg->nextWaiting = 0; |
| } |
| return smsg; |
| |
| case SM_PENDING_LIST: |
| /* make it thread safe, could be accessed by the sender and |
| receiver thread */ |
| EnterCriticalSection( &queue->cSection ); |
| |
| if (!smsg) |
| smsg = queue->smPending; |
| if ( (smsg != queue->smPending) || !queue->smPending ) |
| { |
| ERR_(sendmsg)("should always remove the top one in Pending list, smsg=0x%p queue=0x%p\n", smsg, queue); |
| LeaveCriticalSection( &queue->cSection ); |
| return 0; |
| } |
| |
| TRACE_(sendmsg)("queue=%x, list=%d, smsg=%p msg=%s\n", queue->self, list, |
| smsg, SPY_GetMsgName(smsg->msg)); |
| |
| queue->smPending = smsg->nextPending; |
| smsg->nextPending = 0; |
| |
| /* if no more SMSG in Pending list, clear QS_SENDMESSAGE flag */ |
| if (!queue->smPending) |
| QUEUE_ClearWakeBit( queue, QS_SENDMESSAGE ); |
| |
| LeaveCriticalSection( &queue->cSection ); |
| return smsg; |
| |
| default: |
| ERR_(sendmsg)("Invalid list: %d\n", list); |
| break; |
| } |
| |
| return 0; |
| } |
| |
| |
| /*********************************************************************** |
| * QUEUE_ReceiveMessage |
| * |
| * This routine is called when a sent message is waiting for the queue. |
| */ |
| void QUEUE_ReceiveMessage( MESSAGEQUEUE *queue ) |
| { |
| LRESULT result = 0; |
| SMSG *smsg; |
| MESSAGEQUEUE *senderQ; |
| |
| TRACE_(sendmsg)("queue %04x\n", queue->self ); |
| |
| if ( !((queue->wakeBits & QS_SENDMESSAGE) && queue->smPending) ) |
| { |
| TRACE_(sendmsg)("\trcm: nothing to do\n"); |
| return; |
| } |
| |
| /* remove smsg on the top of the pending list and put it in the processing list */ |
| smsg = QUEUE_RemoveSMSG(queue, SM_PENDING_LIST, 0); |
| QUEUE_AddSMSG(queue, SM_WAITING_LIST, smsg); |
| |
| TRACE_(sendmsg)("RM: %s [%04x] (%04x -> %04x)\n", |
| SPY_GetMsgName(smsg->msg), smsg->msg, smsg->hSrcQueue, smsg->hDstQueue ); |
| |
| if (IsWindow( smsg->hWnd )) |
| { |
| WND *wndPtr = WIN_FindWndPtr( smsg->hWnd ); |
| DWORD extraInfo = queue->GetMessageExtraInfoVal; /* save ExtraInfo */ |
| |
| /* use sender queue extra info value while calling the window proc */ |
| senderQ = (MESSAGEQUEUE*)QUEUE_Lock( smsg->hSrcQueue ); |
| if (senderQ) |
| { |
| queue->GetMessageExtraInfoVal = senderQ->GetMessageExtraInfoVal; |
| QUEUE_Unlock( senderQ ); |
| } |
| |
| /* call the right version of CallWindowProcXX */ |
| if (smsg->flags & SMSG_WIN32) |
| { |
| TRACE_(sendmsg)("\trcm: msg is Win32\n" ); |
| if (smsg->flags & SMSG_UNICODE) |
| result = CallWindowProcW( wndPtr->winproc, |
| smsg->hWnd, smsg->msg, |
| smsg->wParam, smsg->lParam ); |
| else |
| result = CallWindowProcA( wndPtr->winproc, |
| smsg->hWnd, smsg->msg, |
| smsg->wParam, smsg->lParam ); |
| } |
| else /* Win16 message */ |
| result = CallWindowProc16( (WNDPROC16)wndPtr->winproc, |
| (HWND16) smsg->hWnd, |
| (UINT16) smsg->msg, |
| LOWORD (smsg->wParam), |
| smsg->lParam ); |
| |
| queue->GetMessageExtraInfoVal = extraInfo; /* Restore extra info */ |
| WIN_ReleaseWndPtr(wndPtr); |
| TRACE_(sendmsg)("result = %08x\n", (unsigned)result ); |
| } |
| else WARN_(sendmsg)("\trcm: bad hWnd\n"); |
| |
| |
| /* set SMSG_SENDING_REPLY flag to tell ReplyMessage16, it's not |
| an early reply */ |
| smsg->flags |= SMSG_SENDING_REPLY; |
| ReplyMessage( result ); |
| |
| TRACE_(sendmsg)("done!\n" ); |
| } |
| |
| |
| |
| /*********************************************************************** |
| * QUEUE_AddMsg |
| * |
| * Add a message to the queue. Return FALSE if queue is full. |
| */ |
| BOOL QUEUE_AddMsg( HQUEUE16 hQueue, int type, MSG *msg, DWORD extraInfo ) |
| { |
| MESSAGEQUEUE *msgQueue; |
| QMSG *qmsg; |
| |
| |
| if (!(msgQueue = (MESSAGEQUEUE *)QUEUE_Lock( hQueue ))) return FALSE; |
| |
| /* allocate new message in global heap for now */ |
| if (!(qmsg = (QMSG *) HeapAlloc( SystemHeap, 0, sizeof(QMSG) ) )) |
| { |
| QUEUE_Unlock( msgQueue ); |
| return 0; |
| } |
| |
| EnterCriticalSection( &msgQueue->cSection ); |
| |
| /* Store message */ |
| qmsg->type = type; |
| qmsg->msg = *msg; |
| qmsg->extraInfo = extraInfo; |
| |
| /* insert the message in the link list */ |
| qmsg->nextMsg = 0; |
| qmsg->prevMsg = msgQueue->lastMsg; |
| |
| if (msgQueue->lastMsg) |
| msgQueue->lastMsg->nextMsg = qmsg; |
| |
| /* update first and last anchor in message queue */ |
| msgQueue->lastMsg = qmsg; |
| if (!msgQueue->firstMsg) |
| msgQueue->firstMsg = qmsg; |
| |
| msgQueue->msgCount++; |
| |
| LeaveCriticalSection( &msgQueue->cSection ); |
| |
| QUEUE_SetWakeBit( msgQueue, QS_POSTMESSAGE ); |
| QUEUE_Unlock( msgQueue ); |
| |
| return TRUE; |
| } |
| |
| |
| |
| /*********************************************************************** |
| * QUEUE_FindMsg |
| * |
| * Find a message matching the given parameters. Return -1 if none available. |
| */ |
| QMSG* QUEUE_FindMsg( MESSAGEQUEUE * msgQueue, HWND hwnd, int first, int last ) |
| { |
| QMSG* qmsg; |
| |
| EnterCriticalSection( &msgQueue->cSection ); |
| |
| if (!msgQueue->msgCount) |
| qmsg = 0; |
| else if (!hwnd && !first && !last) |
| qmsg = msgQueue->firstMsg; |
| else |
| { |
| /* look in linked list for message matching first and last criteria */ |
| for (qmsg = msgQueue->firstMsg; qmsg; qmsg = qmsg->nextMsg) |
| { |
| MSG *msg = &(qmsg->msg); |
| |
| if (!hwnd || (msg->hwnd == hwnd)) |
| { |
| if (!first && !last) |
| break; /* found it */ |
| |
| if ((msg->message >= first) && (!last || (msg->message <= last))) |
| break; /* found it */ |
| } |
| } |
| } |
| |
| LeaveCriticalSection( &msgQueue->cSection ); |
| |
| return qmsg; |
| } |
| |
| |
| |
| /*********************************************************************** |
| * QUEUE_RemoveMsg |
| * |
| * Remove a message from the queue (pos must be a valid position). |
| */ |
| void QUEUE_RemoveMsg( MESSAGEQUEUE * msgQueue, QMSG *qmsg ) |
| { |
| EnterCriticalSection( &msgQueue->cSection ); |
| |
| /* set the linked list */ |
| if (qmsg->prevMsg) |
| qmsg->prevMsg->nextMsg = qmsg->nextMsg; |
| |
| if (qmsg->nextMsg) |
| qmsg->nextMsg->prevMsg = qmsg->prevMsg; |
| |
| if (msgQueue->firstMsg == qmsg) |
| msgQueue->firstMsg = qmsg->nextMsg; |
| |
| if (msgQueue->lastMsg == qmsg) |
| msgQueue->lastMsg = qmsg->prevMsg; |
| |
| /* deallocate the memory for the message */ |
| HeapFree( SystemHeap, 0, qmsg ); |
| |
| msgQueue->msgCount--; |
| if (!msgQueue->msgCount) msgQueue->wakeBits &= ~QS_POSTMESSAGE; |
| |
| LeaveCriticalSection( &msgQueue->cSection ); |
| } |
| |
| |
| /*********************************************************************** |
| * QUEUE_WakeSomeone |
| * |
| * Wake a queue upon reception of a hardware event. |
| */ |
| static void QUEUE_WakeSomeone( UINT message ) |
| { |
| WND* wndPtr = NULL; |
| WORD wakeBit; |
| HWND hwnd; |
| HQUEUE16 hQueue = 0; |
| MESSAGEQUEUE *queue = NULL; |
| |
| if (hCursorQueue) |
| hQueue = hCursorQueue; |
| |
| if( (message >= WM_KEYFIRST) && (message <= WM_KEYLAST) ) |
| { |
| wakeBit = QS_KEY; |
| if( hActiveQueue ) |
| hQueue = hActiveQueue; |
| } |
| else |
| { |
| wakeBit = (message == WM_MOUSEMOVE) ? QS_MOUSEMOVE : QS_MOUSEBUTTON; |
| if( (hwnd = GetCapture()) ) |
| if( (wndPtr = WIN_FindWndPtr( hwnd )) ) |
| { |
| hQueue = wndPtr->hmemTaskQ; |
| WIN_ReleaseWndPtr(wndPtr); |
| } |
| } |
| |
| if( (hwnd = GetSysModalWindow16()) ) |
| { |
| if( (wndPtr = WIN_FindWndPtr( hwnd )) ) |
| { |
| hQueue = wndPtr->hmemTaskQ; |
| WIN_ReleaseWndPtr(wndPtr); |
| } |
| } |
| |
| if (hQueue) |
| queue = QUEUE_Lock( hQueue ); |
| |
| if( !queue ) |
| { |
| queue = QUEUE_Lock( hFirstQueue ); |
| while( queue ) |
| { |
| if (queue->wakeMask & wakeBit) break; |
| |
| QUEUE_Unlock(queue); |
| queue = QUEUE_Lock( queue->next ); |
| } |
| if( !queue ) |
| { |
| WARN_(msg)("couldn't find queue\n"); |
| return; |
| } |
| } |
| |
| QUEUE_SetWakeBit( queue, wakeBit ); |
| |
| QUEUE_Unlock( queue ); |
| } |
| |
| |
| /*********************************************************************** |
| * hardware_event |
| * |
| * Add an event to the system message queue. |
| * Note: the position is relative to the desktop window. |
| */ |
| void hardware_event( UINT message, WPARAM wParam, LPARAM lParam, |
| int xPos, int yPos, DWORD time, DWORD extraInfo ) |
| { |
| MSG *msg; |
| QMSG *qmsg; |
| int mergeMsg = 0; |
| |
| if (!sysMsgQueue) return; |
| |
| EnterCriticalSection( &sysMsgQueue->cSection ); |
| |
| /* Merge with previous event if possible */ |
| qmsg = sysMsgQueue->lastMsg; |
| |
| if ((message == WM_MOUSEMOVE) && sysMsgQueue->lastMsg) |
| { |
| msg = &(sysMsgQueue->lastMsg->msg); |
| |
| if ((msg->message == message) && (msg->wParam == wParam)) |
| { |
| /* Merge events */ |
| qmsg = sysMsgQueue->lastMsg; |
| mergeMsg = 1; |
| } |
| } |
| |
| if (!mergeMsg) |
| { |
| /* Should I limit the number of messages in |
| the system message queue??? */ |
| |
| /* Don't merge allocate a new msg in the global heap */ |
| |
| if (!(qmsg = (QMSG *) HeapAlloc( SystemHeap, 0, sizeof(QMSG) ) )) |
| { |
| LeaveCriticalSection( &sysMsgQueue->cSection ); |
| return; |
| } |
| |
| /* put message at the end of the linked list */ |
| qmsg->nextMsg = 0; |
| qmsg->prevMsg = sysMsgQueue->lastMsg; |
| |
| if (sysMsgQueue->lastMsg) |
| sysMsgQueue->lastMsg->nextMsg = qmsg; |
| |
| /* set last and first anchor index in system message queue */ |
| sysMsgQueue->lastMsg = qmsg; |
| if (!sysMsgQueue->firstMsg) |
| sysMsgQueue->firstMsg = qmsg; |
| |
| sysMsgQueue->msgCount++; |
| } |
| |
| /* Store message */ |
| msg = &(qmsg->msg); |
| msg->hwnd = 0; |
| msg->message = message; |
| msg->wParam = wParam; |
| msg->lParam = lParam; |
| msg->time = time; |
| msg->pt.x = xPos; |
| msg->pt.y = yPos; |
| qmsg->extraInfo = extraInfo; |
| qmsg->type = QMSG_HARDWARE; |
| |
| LeaveCriticalSection( &sysMsgQueue->cSection ); |
| |
| QUEUE_WakeSomeone( message ); |
| } |
| |
| |
| /*********************************************************************** |
| * QUEUE_GetQueueTask |
| */ |
| HTASK16 QUEUE_GetQueueTask( HQUEUE16 hQueue ) |
| { |
| HTASK16 hTask = 0; |
| |
| MESSAGEQUEUE *queue = QUEUE_Lock( hQueue ); |
| |
| if (queue) |
| { |
| hTask = queue->teb->htask16; |
| QUEUE_Unlock( queue ); |
| } |
| |
| return hTask; |
| } |
| |
| |
| |
| /*********************************************************************** |
| * QUEUE_IncPaintCount |
| */ |
| void QUEUE_IncPaintCount( HQUEUE16 hQueue ) |
| { |
| MESSAGEQUEUE *queue; |
| |
| if (!(queue = (MESSAGEQUEUE *)QUEUE_Lock( hQueue ))) return; |
| queue->wPaintCount++; |
| QUEUE_SetWakeBit( queue, QS_PAINT ); |
| QUEUE_Unlock( queue ); |
| } |
| |
| |
| /*********************************************************************** |
| * QUEUE_DecPaintCount |
| */ |
| void QUEUE_DecPaintCount( HQUEUE16 hQueue ) |
| { |
| MESSAGEQUEUE *queue; |
| |
| if (!(queue = (MESSAGEQUEUE *)QUEUE_Lock( hQueue ))) return; |
| queue->wPaintCount--; |
| if (!queue->wPaintCount) queue->wakeBits &= ~QS_PAINT; |
| QUEUE_Unlock( queue ); |
| } |
| |
| |
| /*********************************************************************** |
| * QUEUE_IncTimerCount |
| */ |
| void QUEUE_IncTimerCount( HQUEUE16 hQueue ) |
| { |
| MESSAGEQUEUE *queue; |
| |
| if (!(queue = (MESSAGEQUEUE *)QUEUE_Lock( hQueue ))) return; |
| queue->wTimerCount++; |
| QUEUE_SetWakeBit( queue, QS_TIMER ); |
| QUEUE_Unlock( queue ); |
| } |
| |
| |
| /*********************************************************************** |
| * QUEUE_DecTimerCount |
| */ |
| void QUEUE_DecTimerCount( HQUEUE16 hQueue ) |
| { |
| MESSAGEQUEUE *queue; |
| |
| if (!(queue = (MESSAGEQUEUE *)QUEUE_Lock( hQueue ))) return; |
| queue->wTimerCount--; |
| if (!queue->wTimerCount) queue->wakeBits &= ~QS_TIMER; |
| QUEUE_Unlock( queue ); |
| } |
| |
| |
| /*********************************************************************** |
| * PostQuitMessage16 (USER.6) |
| */ |
| void WINAPI PostQuitMessage16( INT16 exitCode ) |
| { |
| PostQuitMessage( exitCode ); |
| } |
| |
| |
| /*********************************************************************** |
| * PostQuitMessage (USER32.421) |
| * |
| * PostQuitMessage() posts a message to the system requesting an |
| * application to terminate execution. As a result of this function, |
| * the WM_QUIT message is posted to the application, and |
| * PostQuitMessage() returns immediately. The exitCode parameter |
| * specifies an application-defined exit code, which appears in the |
| * _wParam_ parameter of the WM_QUIT message posted to the application. |
| * |
| * CONFORMANCE |
| * |
| * ECMA-234, Win32 |
| */ |
| void WINAPI PostQuitMessage( INT exitCode ) |
| { |
| MESSAGEQUEUE *queue; |
| |
| if (!(queue = (MESSAGEQUEUE *)QUEUE_Lock( GetFastQueue16() ))) return; |
| queue->wPostQMsg = TRUE; |
| queue->wExitCode = (WORD)exitCode; |
| QUEUE_Unlock( queue ); |
| } |
| |
| |
| /*********************************************************************** |
| * GetWindowTask16 (USER.224) |
| */ |
| HTASK16 WINAPI GetWindowTask16( HWND16 hwnd ) |
| { |
| HTASK16 retvalue; |
| WND *wndPtr = WIN_FindWndPtr( hwnd ); |
| |
| if (!wndPtr) return 0; |
| retvalue = QUEUE_GetQueueTask( wndPtr->hmemTaskQ ); |
| WIN_ReleaseWndPtr(wndPtr); |
| return retvalue; |
| } |
| |
| /*********************************************************************** |
| * GetWindowThreadProcessId (USER32.313) |
| */ |
| DWORD WINAPI GetWindowThreadProcessId( HWND hwnd, LPDWORD process ) |
| { |
| DWORD retvalue; |
| MESSAGEQUEUE *queue; |
| |
| WND *wndPtr = WIN_FindWndPtr( hwnd ); |
| if (!wndPtr) return 0; |
| |
| queue = QUEUE_Lock( wndPtr->hmemTaskQ ); |
| WIN_ReleaseWndPtr(wndPtr); |
| |
| if (!queue) return 0; |
| |
| if ( process ) *process = (DWORD)queue->teb->pid; |
| retvalue = (DWORD)queue->teb->tid; |
| |
| QUEUE_Unlock( queue ); |
| return retvalue; |
| } |
| |
| |
| /*********************************************************************** |
| * SetMessageQueue16 (USER.266) |
| */ |
| BOOL16 WINAPI SetMessageQueue16( INT16 size ) |
| { |
| return SetMessageQueue( size ); |
| } |
| |
| |
| /*********************************************************************** |
| * SetMessageQueue (USER32.494) |
| */ |
| BOOL WINAPI SetMessageQueue( INT size ) |
| { |
| /* now obsolete the message queue will be expanded dynamically |
| as necessary */ |
| |
| /* access the queue to create it if it's not existing */ |
| GetFastQueue16(); |
| |
| return TRUE; |
| } |
| |
| /*********************************************************************** |
| * InitThreadInput16 (USER.409) |
| */ |
| HQUEUE16 WINAPI InitThreadInput16( WORD unknown, WORD flags ) |
| { |
| HQUEUE16 hQueue; |
| MESSAGEQUEUE *queuePtr; |
| |
| TEB *teb = NtCurrentTeb(); |
| |
| if (!teb) |
| return 0; |
| |
| hQueue = teb->queue; |
| |
| if ( !hQueue ) |
| { |
| /* Create thread message queue */ |
| if( !(hQueue = QUEUE_CreateMsgQueue( TRUE ))) |
| { |
| ERR_(msg)("failed!\n"); |
| return FALSE; |
| } |
| |
| /* Link new queue into list */ |
| queuePtr = (MESSAGEQUEUE *)QUEUE_Lock( hQueue ); |
| queuePtr->teb = NtCurrentTeb(); |
| |
| HeapLock( SystemHeap ); /* FIXME: a bit overkill */ |
| SetThreadQueue16( 0, hQueue ); |
| teb->queue = hQueue; |
| |
| queuePtr->next = hFirstQueue; |
| hFirstQueue = hQueue; |
| HeapUnlock( SystemHeap ); |
| |
| QUEUE_Unlock( queuePtr ); |
| } |
| |
| return hQueue; |
| } |
| |
| /*********************************************************************** |
| * GetQueueStatus16 (USER.334) |
| */ |
| DWORD WINAPI GetQueueStatus16( UINT16 flags ) |
| { |
| MESSAGEQUEUE *queue; |
| DWORD ret; |
| |
| if (!(queue = (MESSAGEQUEUE *)QUEUE_Lock( GetFastQueue16() ))) return 0; |
| ret = MAKELONG( queue->changeBits, queue->wakeBits ); |
| queue->changeBits = 0; |
| QUEUE_Unlock( queue ); |
| |
| return ret & MAKELONG( flags, flags ); |
| } |
| |
| /*********************************************************************** |
| * GetQueueStatus (USER32.283) |
| */ |
| DWORD WINAPI GetQueueStatus( UINT flags ) |
| { |
| MESSAGEQUEUE *queue; |
| DWORD ret; |
| |
| if (!(queue = (MESSAGEQUEUE *)QUEUE_Lock( GetFastQueue16() ))) return 0; |
| ret = MAKELONG( queue->changeBits, queue->wakeBits ); |
| queue->changeBits = 0; |
| QUEUE_Unlock( queue ); |
| |
| return ret & MAKELONG( flags, flags ); |
| } |
| |
| |
| /*********************************************************************** |
| * GetInputState16 (USER.335) |
| */ |
| BOOL16 WINAPI GetInputState16(void) |
| { |
| return GetInputState(); |
| } |
| |
| /*********************************************************************** |
| * WaitForInputIdle (USER32.577) |
| */ |
| DWORD WINAPI WaitForInputIdle (HANDLE hProcess, DWORD dwTimeOut) |
| { |
| DWORD cur_time, ret; |
| HANDLE idle_event = -1; |
| |
| SERVER_START_REQ |
| { |
| struct wait_input_idle_request *req = server_alloc_req( sizeof(*req), 0 ); |
| req->handle = hProcess; |
| req->timeout = dwTimeOut; |
| if (!(ret = server_call( REQ_WAIT_INPUT_IDLE ))) idle_event = req->event; |
| } |
| SERVER_END_REQ; |
| if (ret) return 0xffffffff; /* error */ |
| if (idle_event == -1) return 0; /* no event to wait on */ |
| |
| cur_time = GetTickCount(); |
| |
| TRACE_(msg)("waiting for %x\n", idle_event ); |
| while ( dwTimeOut > GetTickCount() - cur_time || dwTimeOut == INFINITE ) { |
| |
| ret = MsgWaitForMultipleObjects ( 1, &idle_event, FALSE, dwTimeOut, QS_SENDMESSAGE ); |
| if ( ret == ( WAIT_OBJECT_0 + 1 )) { |
| MESSAGEQUEUE * queue; |
| if (!(queue = (MESSAGEQUEUE *)QUEUE_Lock( GetFastQueue16() ))) return 0xFFFFFFFF; |
| QUEUE_ReceiveMessage ( queue ); |
| QUEUE_Unlock ( queue ); |
| continue; |
| } |
| if ( ret == WAIT_TIMEOUT || ret == 0xFFFFFFFF ) { |
| TRACE_(msg)("timeout or error\n"); |
| return ret; |
| } |
| else { |
| TRACE_(msg)("finished\n"); |
| return 0; |
| } |
| |
| } |
| return WAIT_TIMEOUT; |
| } |
| |
| /*********************************************************************** |
| * GetInputState (USER32.244) |
| */ |
| BOOL WINAPI GetInputState(void) |
| { |
| MESSAGEQUEUE *queue; |
| BOOL ret; |
| |
| if (!(queue = (MESSAGEQUEUE *)QUEUE_Lock( GetFastQueue16() ))) |
| return FALSE; |
| ret = queue->wakeBits & (QS_KEY | QS_MOUSEBUTTON); |
| QUEUE_Unlock( queue ); |
| |
| return ret; |
| } |
| |
| /*********************************************************************** |
| * UserYield (USER.332) |
| */ |
| void WINAPI UserYield16(void) |
| { |
| MESSAGEQUEUE *queue; |
| |
| /* Handle sent messages */ |
| queue = (MESSAGEQUEUE *)QUEUE_Lock( GetFastQueue16() ); |
| |
| while (queue && (queue->wakeBits & QS_SENDMESSAGE)) |
| QUEUE_ReceiveMessage( queue ); |
| |
| QUEUE_Unlock( queue ); |
| |
| /* Yield */ |
| if ( THREAD_IsWin16( NtCurrentTeb() ) ) |
| OldYield16(); |
| else |
| WIN32_OldYield16(); |
| |
| /* Handle sent messages again */ |
| queue = (MESSAGEQUEUE *)QUEUE_Lock( GetFastQueue16() ); |
| |
| while (queue && (queue->wakeBits & QS_SENDMESSAGE)) |
| QUEUE_ReceiveMessage( queue ); |
| |
| QUEUE_Unlock( queue ); |
| } |
| |
| /*********************************************************************** |
| * GetMessagePos (USER.119) (USER32.272) |
| * |
| * The GetMessagePos() function returns a long value representing a |
| * cursor position, in screen coordinates, when the last message |
| * retrieved by the GetMessage() function occurs. The x-coordinate is |
| * in the low-order word of the return value, the y-coordinate is in |
| * the high-order word. The application can use the MAKEPOINT() |
| * macro to obtain a POINT structure from the return value. |
| * |
| * For the current cursor position, use GetCursorPos(). |
| * |
| * RETURNS |
| * |
| * Cursor position of last message on success, zero on failure. |
| * |
| * CONFORMANCE |
| * |
| * ECMA-234, Win32 |
| * |
| */ |
| DWORD WINAPI GetMessagePos(void) |
| { |
| MESSAGEQUEUE *queue; |
| DWORD ret; |
| |
| if (!(queue = (MESSAGEQUEUE *)QUEUE_Lock( GetFastQueue16() ))) return 0; |
| ret = queue->GetMessagePosVal; |
| QUEUE_Unlock( queue ); |
| |
| return ret; |
| } |
| |
| |
| /*********************************************************************** |
| * GetMessageTime (USER.120) (USER32.273) |
| * |
| * GetMessageTime() returns the message time for the last message |
| * retrieved by the function. The time is measured in milliseconds with |
| * the same offset as GetTickCount(). |
| * |
| * Since the tick count wraps, this is only useful for moderately short |
| * relative time comparisons. |
| * |
| * RETURNS |
| * |
| * Time of last message on success, zero on failure. |
| * |
| * CONFORMANCE |
| * |
| * ECMA-234, Win32 |
| * |
| */ |
| LONG WINAPI GetMessageTime(void) |
| { |
| MESSAGEQUEUE *queue; |
| LONG ret; |
| |
| if (!(queue = (MESSAGEQUEUE *)QUEUE_Lock( GetFastQueue16() ))) return 0; |
| ret = queue->GetMessageTimeVal; |
| QUEUE_Unlock( queue ); |
| |
| return ret; |
| } |
| |
| |
| /*********************************************************************** |
| * GetMessageExtraInfo (USER.288) (USER32.271) |
| */ |
| LONG WINAPI GetMessageExtraInfo(void) |
| { |
| MESSAGEQUEUE *queue; |
| LONG ret; |
| |
| if (!(queue = (MESSAGEQUEUE *)QUEUE_Lock( GetFastQueue16() ))) return 0; |
| ret = queue->GetMessageExtraInfoVal; |
| QUEUE_Unlock( queue ); |
| |
| return ret; |
| } |
| |
| |
| /********************************************************************** |
| * AttachThreadInput [USER32.8] Attaches input of 1 thread to other |
| * |
| * Attaches the input processing mechanism of one thread to that of |
| * another thread. |
| * |
| * RETURNS |
| * Success: TRUE |
| * Failure: FALSE |
| * |
| * TODO: |
| * 1. Reset the Key State (currenly per thread key state is not maintained) |
| */ |
| BOOL WINAPI AttachThreadInput( |
| DWORD idAttach, /* [in] Thread to attach */ |
| DWORD idAttachTo, /* [in] Thread to attach to */ |
| BOOL fAttach) /* [in] Attach or detach */ |
| { |
| MESSAGEQUEUE *pSrcMsgQ = 0, *pTgtMsgQ = 0; |
| BOOL16 bRet = 0; |
| |
| SetLastError(ERROR_CALL_NOT_IMPLEMENTED); |
| |
| /* A thread cannot attach to itself */ |
| if ( idAttach == idAttachTo ) |
| goto CLEANUP; |
| |
| /* According to the docs this method should fail if a |
| * "Journal record" hook is installed. (attaches all input queues together) |
| */ |
| if ( HOOK_IsHooked( WH_JOURNALRECORD ) ) |
| goto CLEANUP; |
| |
| /* Retrieve message queues corresponding to the thread id's */ |
| pTgtMsgQ = (MESSAGEQUEUE *)QUEUE_Lock( GetThreadQueue16( idAttach ) ); |
| pSrcMsgQ = (MESSAGEQUEUE *)QUEUE_Lock( GetThreadQueue16( idAttachTo ) ); |
| |
| /* Ensure we have message queues and that Src and Tgt threads |
| * are not system threads. |
| */ |
| if ( !pSrcMsgQ || !pTgtMsgQ || !pSrcMsgQ->pQData || !pTgtMsgQ->pQData ) |
| goto CLEANUP; |
| |
| if (fAttach) /* Attach threads */ |
| { |
| /* Only attach if currently detached */ |
| if ( pTgtMsgQ->pQData != pSrcMsgQ->pQData ) |
| { |
| /* First release the target threads perQData */ |
| PERQDATA_Release( pTgtMsgQ->pQData ); |
| |
| /* Share a reference to the source threads perQDATA */ |
| PERQDATA_Addref( pSrcMsgQ->pQData ); |
| pTgtMsgQ->pQData = pSrcMsgQ->pQData; |
| } |
| } |
| else /* Detach threads */ |
| { |
| /* Only detach if currently attached */ |
| if ( pTgtMsgQ->pQData == pSrcMsgQ->pQData ) |
| { |
| /* First release the target threads perQData */ |
| PERQDATA_Release( pTgtMsgQ->pQData ); |
| |
| /* Give the target thread its own private perQDATA once more */ |
| pTgtMsgQ->pQData = PERQDATA_CreateInstance(); |
| } |
| } |
| |
| /* TODO: Reset the Key State */ |
| |
| bRet = 1; /* Success */ |
| |
| CLEANUP: |
| |
| /* Unlock the queues before returning */ |
| if ( pSrcMsgQ ) |
| QUEUE_Unlock( pSrcMsgQ ); |
| if ( pTgtMsgQ ) |
| QUEUE_Unlock( pTgtMsgQ ); |
| |
| return bRet; |
| } |
