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wine/include/queue.h
Ulrich Weigand 52e891d5ec Synchronize access to MESSAGEQUEUE members.
2001-01-29 00:33:35 +00:00

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/*
* Message queues definitions
*
* Copyright 1993 Alexandre Julliard
*/
#ifndef __WINE_QUEUE_H
#define __WINE_QUEUE_H
#include "windef.h"
#include "winbase.h"
#include "wingdi.h"
#include "winuser.h"
#include "thread.h"
/* Message as stored in the queue (contains the extraInfo field) */
typedef struct tagQMSG
{
int type;
MSG msg;
DWORD extraInfo; /* Only in 3.1 */
struct tagQMSG *nextMsg;
struct tagQMSG *prevMsg;
} QMSG;
#define QMSG_WIN16 0
#define QMSG_WIN32A 1
#define QMSG_WIN32W 2
#define QMSG_HARDWARE 3
typedef struct tagSMSG
{
struct tagSMSG *nextProcessing; /* next SMSG in the processing list */
struct tagSMSG *nextPending; /* next SMSG in the pending list */
struct tagSMSG *nextWaiting; /* next SMSG in the waiting list */
HQUEUE16 hSrcQueue; /* sending Queue, (NULL if it didn't wait) */
HQUEUE16 hDstQueue; /* destination Queue */
HWND hWnd; /* destination window */
UINT msg; /* message sent */
WPARAM wParam; /* wParam of the sent message */
LPARAM lParam; /* lParam of the sent message */
LRESULT lResult; /* result of SendMessage */
WORD flags; /* see below SMSG_XXXX */
} SMSG;
/* SMSG -> flags values */
/* set when lResult contains a good value */
#define SMSG_HAVE_RESULT 0x0001
/* protection for multiple call to ReplyMessage16() */
#define SMSG_ALREADY_REPLIED 0x0002
/* use with EARLY_REPLY for forcing the receiver to clean SMSG */
#define SMSG_RECEIVER_CLEANS 0x0010
/* used with EARLY_REPLY to indicate to sender, receiver is done with SMSG */
#define SMSG_RECEIVED 0x0020
/* set in ReceiveMessage() to indicate it's not an early reply */
#define SMSG_SENDING_REPLY 0x0040
/* set when ReplyMessage16() is called by the application */
#define SMSG_EARLY_REPLY 0x0080
/* set when sender is Win32 thread */
#define SMSG_WIN32 0x1000
/* set when sender is a unicode thread */
#define SMSG_UNICODE 0x2000
/* Per-queue data for the message queue
* Note that we currently only store the current values for
* Active, Capture and Focus windows currently.
* It might be necessary to store a pointer to the system message queue
* as well since windows 9x maintains per thread system message queues
*/
typedef struct tagPERQUEUEDATA
{
HWND hWndFocus; /* Focus window */
HWND hWndActive; /* Active window */
HWND hWndCapture; /* Capture window */
INT16 nCaptureHT; /* Capture info (hit-test) */
ULONG ulRefCount; /* Reference count */
CRITICAL_SECTION cSection; /* Critical section for thread safe access */
} PERQUEUEDATA;
/* Message queue */
typedef struct tagMESSAGEQUEUE
{
HQUEUE16 next; /* Next queue */
HQUEUE16 self; /* Handle to self (was: reserved) */
TEB* teb; /* Thread owning queue */
HANDLE server_queue; /* Handle to server-side queue */
CRITICAL_SECTION cSection; /* Queue access critical section */
DWORD magic; /* magic number should be QUEUE_MAGIC */
DWORD lockCount; /* reference counter */
WORD msgCount; /* Number of waiting messages */
QMSG* firstMsg; /* First message in linked list */
QMSG* lastMsg; /* Last message in linked list */
WORD wPostQMsg; /* PostQuitMessage flag */
WORD wExitCode; /* PostQuitMessage exit code */
WORD wPaintCount; /* Number of WM_PAINT needed */
WORD wTimerCount; /* Number of timers for this task */
WORD changeBits; /* Changed wake-up bits */
WORD wakeBits; /* Queue wake-up bits */
WORD wakeMask; /* Queue wake-up mask */
DWORD GetMessageTimeVal; /* Value for GetMessageTime */
DWORD GetMessagePosVal; /* Value for GetMessagePos */
DWORD GetMessageExtraInfoVal; /* Value for GetMessageExtraInfo */
SMSG* smWaiting; /* SendMessage waiting for reply */
SMSG* smProcessing; /* SendMessage currently being processed */
SMSG* smPending; /* SendMessage waiting to be received */
HANDLE16 hCurHook; /* Current hook */
HANDLE16 hooks[WH_NB_HOOKS]; /* Task hooks list */
PERQUEUEDATA *pQData; /* pointer to (shared) PERQUEUEDATA structure */
} MESSAGEQUEUE;
/* Extra (undocumented) queue wake bits - see "Undoc. Windows" */
#define QS_SMRESULT 0x8000 /* Queue has a SendMessage() result */
/* Types of SMSG stack */
#define SM_PROCESSING_LIST 1 /* list of SM currently being processed */
#define SM_PENDING_LIST 2 /* list of SM wating to be received */
#define SM_WAITING_LIST 3 /* list of SM waiting for reply */
#define QUEUE_MAGIC 0xD46E80AF
/* Per queue data management methods */
PERQUEUEDATA* PERQDATA_CreateInstance( void );
ULONG PERQDATA_Addref( PERQUEUEDATA* pQData );
ULONG PERQDATA_Release( PERQUEUEDATA* pQData );
HWND PERQDATA_GetFocusWnd( PERQUEUEDATA *pQData );
HWND PERQDATA_SetFocusWnd( PERQUEUEDATA *pQData, HWND hWndFocus );
HWND PERQDATA_GetActiveWnd( PERQUEUEDATA *pQData );
HWND PERQDATA_SetActiveWnd( PERQUEUEDATA *pQData, HWND hWndActive );
HWND PERQDATA_GetCaptureWnd( PERQUEUEDATA *pQData );
HWND PERQDATA_SetCaptureWnd( PERQUEUEDATA *pQData, HWND hWndCapture );
INT16 PERQDATA_GetCaptureInfo( PERQUEUEDATA *pQData );
INT16 PERQDATA_SetCaptureInfo( PERQUEUEDATA *pQData, INT16 nCaptureHT );
/* Message queue management methods */
extern MESSAGEQUEUE *QUEUE_Lock( HQUEUE16 hQueue );
extern void QUEUE_Unlock( MESSAGEQUEUE *queue );
extern void QUEUE_DumpQueue( HQUEUE16 hQueue );
extern void QUEUE_WalkQueues(void);
extern BOOL QUEUE_IsExitingQueue( HQUEUE16 hQueue );
extern void QUEUE_SetExitingQueue( HQUEUE16 hQueue );
extern MESSAGEQUEUE *QUEUE_GetSysQueue(void);
extern void QUEUE_SetWakeBit( MESSAGEQUEUE *queue, WORD bit );
extern void QUEUE_ClearWakeBit( MESSAGEQUEUE *queue, WORD bit );
extern WORD QUEUE_TestWakeBit( MESSAGEQUEUE *queue, WORD bit );
extern BOOL QUEUE_ReceiveMessage( MESSAGEQUEUE *queue );
extern int QUEUE_WaitBits( WORD bits, DWORD timeout );
extern void QUEUE_IncPaintCount( HQUEUE16 hQueue );
extern void QUEUE_DecPaintCount( HQUEUE16 hQueue );
extern void QUEUE_IncTimerCount( HQUEUE16 hQueue );
extern void QUEUE_DecTimerCount( HQUEUE16 hQueue );
extern BOOL QUEUE_CreateSysMsgQueue( int size );
extern BOOL QUEUE_DeleteMsgQueue( HQUEUE16 hQueue );
extern HTASK16 QUEUE_GetQueueTask( HQUEUE16 hQueue );
extern BOOL QUEUE_AddMsg( HQUEUE16 hQueue, int type, MSG * msg, DWORD extraInfo );
extern QMSG* QUEUE_FindMsg( MESSAGEQUEUE * msgQueue, HWND hwnd,
int first, int last );
extern void QUEUE_RemoveMsg( MESSAGEQUEUE * msgQueue, QMSG *qmsg );
extern SMSG *QUEUE_RemoveSMSG( MESSAGEQUEUE *queue, int list, SMSG *smsg );
extern BOOL QUEUE_AddSMSG( MESSAGEQUEUE *queue, int list, SMSG *smsg );
extern void hardware_event( UINT message, WPARAM wParam, LPARAM lParam,
int xPos, int yPos, DWORD time, DWORD extraInfo );
extern HQUEUE16 WINAPI InitThreadInput16( WORD unknown, WORD flags );
#endif /* __WINE_QUEUE_H */
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