Intravision/reactos
1
0
Fork 0
mirror of https://github.com/reactos/reactos.git synced 2025-02-22 16:36:33 +00:00
Code Issues Projects Releases Packages Wiki Activity

[win32]

Browse source 
- Rafal Harabien:
- Always call IntKeyboardInput and co_MsqPostKeyboardMessage while holding the user lock
- Simplify cleaning up sent messages
See issue #5580 for more details.

svn path=/trunk/; revision=51031
This commit is contained in:
Giannis Adamopoulos 2011-03-13 11:22:18 +00:00
parent 58b9a229c5
commit d1a2f235a3
3 changed files with 72 additions and 148 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

22
reactos/subsystems/win32/win32k/ntuser/input.c
View file

@ -708,6 +708,7 @@ KeyboardThreadMain(PVOID StartContext)
if (ModifierState == 0)
{
UserEnterExclusive();
if (fsModifiers == MOD_WIN)
IntKeyboardSendWinKeyMsg();
else if (fsModifiers == MOD_ALT)
@ -723,6 +724,7 @@ KeyboardThreadMain(PVOID StartContext)
}
co_IntKeyboardSendAltKeyMsg();
}
UserLeave();
continue;
}
@ -731,6 +733,8 @@ KeyboardThreadMain(PVOID StartContext)
}
}
UserEnterExclusive();
for (;NumKeys;memcpy(&KeyInput, &NextKeyInput, sizeof(KeyInput)),
NumKeys--)
{
@ -860,6 +864,8 @@ KeyboardThreadMain(PVOID StartContext)
*/
co_MsqPostKeyboardMessage(msg.message,msg.wParam,msg.lParam);
}
UserLeave();
}
KeyboardEscape:
@ -1243,17 +1249,11 @@ IntKeyboardInput(KEYBDINPUT *ki)
LARGE_INTEGER LargeTickCount;
KBDLLHOOKSTRUCT KbdHookData;
WORD flags, wVkStripped, wVkL, wVkR, wVk = ki->wVk, vk_hook = ki->wVk;
BOOLEAN Entered = FALSE;
Msg.lParam = 0;
// Condition may arise when calling MsqPostMessage and waiting for an event.
if (!UserIsEntered())
{
// Fixme: Not sure ATM if this thread is locked.
UserEnterExclusive();
Entered = TRUE;
}
// Condition may arise when calling MsqPostMessage and waiting for an event.
ASSERT (UserIsEntered());
wVk = LOBYTE(wVk);
Msg.wParam = wVk;
@ -1352,7 +1352,7 @@ IntKeyboardInput(KEYBDINPUT *ki)
{
DPRINT1("Kbd msg %d wParam %d lParam 0x%08x dropped by WH_KEYBOARD_LL hook\n",
Msg.message, vk_hook, Msg.lParam);
if (Entered) UserLeave();
return FALSE;
}
@ -1380,7 +1380,7 @@ IntKeyboardInput(KEYBDINPUT *ki)
if (FocusMessageQueue == NULL)
{
DPRINT("No focus message queue\n");
if (Entered) UserLeave();
return FALSE;
}
@ -1401,8 +1401,6 @@ IntKeyboardInput(KEYBDINPUT *ki)
DPRINT("Invalid focus window handle\n");
}
if (Entered) UserLeave();
return TRUE;
}

14
reactos/subsystems/win32/win32k/ntuser/message.c
View file

@ -1447,7 +1447,7 @@ co_IntSendMessageWithCallBack( HWND hWnd,
if(!(Message = ExAllocatePoolWithTag(NonPagedPool, sizeof(USER_SENT_MESSAGE), TAG_USRMSG)))
{
DPRINT1("MsqSendMessage(): Not enough memory to allocate a message");
return STATUS_INSUFFICIENT_RESOURCES;
RETURN( FALSE);
}
Message->Msg.hwnd = hWnd;
@ -1459,19 +1459,21 @@ co_IntSendMessageWithCallBack( HWND hWnd,
Message->lResult = 0;
Message->QS_Flags = 0;
Message->SenderQueue = NULL; // mjmartin, you are right! This is null.
IntReferenceMessageQueue(Win32Thread->MessageQueue);
Message->CallBackSenderQueue = Win32Thread->MessageQueue;
IntReferenceMessageQueue(Window->head.pti->MessageQueue);
Message->CompletionCallback = CompletionCallback;
Message->CompletionCallbackContext = CompletionCallbackContext;
Message->HookMessage = MSQ_NORMAL | MSQ_SENTNOWAIT;
Message->HookMessage = MSQ_NORMAL; // | MSQ_SENTNOWAIT
Message->HasPackedLParam = (lParamBufferSize > 0);
Message->DispatchingListEntry.Flink = NULL;
Message->QS_Flags = QS_SENDMESSAGE;
IntReferenceMessageQueue(Window->head.pti->MessageQueue);
MsqWakeQueue(Window->head.pti->MessageQueue, QS_SENDMESSAGE, FALSE);
InsertTailList(&Window->head.pti->MessageQueue->SentMessagesListHead, &Message->ListEntry);
IntDereferenceMessageQueue(Window->head.pti->MessageQueue);
//IntDereferenceMessageQueue(Window->head.pti->MessageQueue);
RETURN(TRUE);

184
reactos/subsystems/win32/win32k/ntuser/msgqueue.c
View file

@ -279,18 +279,12 @@ co_MsqPostKeyboardMessage(UINT uMsg, WPARAM wParam, LPARAM lParam)
MSG Msg;
LARGE_INTEGER LargeTickCount;
KBDLLHOOKSTRUCT KbdHookData;
BOOLEAN Entered = FALSE;
DPRINT("MsqPostKeyboardMessage(uMsg 0x%x, wParam 0x%x, lParam 0x%x)\n",
uMsg, wParam, lParam);
// Condition may arise when calling MsqPostMessage and waiting for an event.
if (!UserIsEntered())
{
// Fixme: Not sure ATM if this thread is locked.
UserEnterExclusive();
Entered = TRUE;
}
ASSERT(UserIsEntered());
FocusMessageQueue = IntGetFocusMessageQueue();
@ -320,14 +314,12 @@ co_MsqPostKeyboardMessage(UINT uMsg, WPARAM wParam, LPARAM lParam)
{
DPRINT1("Kbd msg %d wParam %d lParam 0x%08x dropped by WH_KEYBOARD_LL hook\n",
Msg.message, Msg.wParam, Msg.lParam);
if (Entered) UserLeave();
return;
}
if (FocusMessageQueue == NULL)
{
DPRINT("No focus message queue\n");
if (Entered) UserLeave();
return;
}
@ -346,7 +338,6 @@ co_MsqPostKeyboardMessage(UINT uMsg, WPARAM wParam, LPARAM lParam)
DPRINT("Invalid focus window handle\n");
}
if (Entered) UserLeave();
return;
}
@ -415,6 +406,42 @@ MsqDestroyMessage(PUSER_MESSAGE Message)
ExFreeToPagedLookasideList(&MessageLookasideList, Message);
}
VOID FASTCALL
MsqDestroySentMessage(PUSER_MESSAGE_QUEUE MessageQueue, PUSER_SENT_MESSAGE SentMessage)
{
/* remove the message from the dispatching list if needed */
if (SentMessage->DispatchingListEntry.Flink != NULL)
{
RemoveEntryList(&SentMessage->DispatchingListEntry);
}
/* wake the sender's thread */
if (SentMessage->CompletionEvent != NULL)
{
KeSetEvent(SentMessage->CompletionEvent, IO_NO_INCREMENT, FALSE);
}
/* dereference message queues */
IntDereferenceMessageQueue(MessageQueue);
if (SentMessage->SenderQueue)
{
IntDereferenceMessageQueue(SentMessage->SenderQueue);
}
if (SentMessage->CallBackSenderQueue)
{
IntDereferenceMessageQueue(SentMessage->CallBackSenderQueue);
}
/* free lParam if needed */
if (SentMessage->HasPackedLParam == TRUE && SentMessage->Msg.lParam)
{
ExFreePool((PVOID)SentMessage->Msg.lParam);
}
/* free the message */
ExFreePoolWithTag(SentMessage, TAG_USRMSG);
}
BOOLEAN FASTCALL
co_MsqDispatchOneSentMessage(PUSER_MESSAGE_QUEUE MessageQueue)
{
@ -478,13 +505,10 @@ co_MsqDispatchOneSentMessage(PUSER_MESSAGE_QUEUE MessageQueue)
RemoveEntryList(&Message->ListEntry);
/* remove the message from the dispatching list if needed, so lock the sender's message queue */
if (!(Message->HookMessage & MSQ_SENTNOWAIT))
if (Message->DispatchingListEntry.Flink != NULL)
{
if (Message->DispatchingListEntry.Flink != NULL)
{
/* only remove it from the dispatching list if not already removed by a timeout */
RemoveEntryList(&Message->DispatchingListEntry);
}
RemoveEntryList(&Message->DispatchingListEntry);
Message->DispatchingListEntry.Flink = NULL;
}
/* still keep the sender's message queue locked, so the sender can't exit the
MsqSendMessage() function (if timed out) */
@ -500,16 +524,11 @@ co_MsqDispatchOneSentMessage(PUSER_MESSAGE_QUEUE MessageQueue)
*Message->Result = Result;
}
if (Message->HasPackedLParam == TRUE)
{
if (Message->Msg.lParam)
ExFreePool((PVOID)Message->Msg.lParam);
}
/* Notify the sender. */
if (Message->CompletionEvent != NULL)
{
KeSetEvent(Message->CompletionEvent, IO_NO_INCREMENT, FALSE);
Message->CompletionEvent = NULL; /* prevent MsqDestroySentMessage from setting this event again */
}
/* Call the callback if the message was sent with SendMessageCallback */
@ -522,15 +541,7 @@ co_MsqDispatchOneSentMessage(PUSER_MESSAGE_QUEUE MessageQueue)
Result);
}
/* Only if it is not a no wait message */
if (!(Message->HookMessage & MSQ_SENTNOWAIT))
{
IntDereferenceMessageQueue(Message->SenderQueue);
IntDereferenceMessageQueue(MessageQueue);
}
/* free the message */
ExFreePoolWithTag(Message, TAG_USRMSG);
MsqDestroySentMessage(MessageQueue, Message);
/* do not hangup on the user if this is reentering */
if (!SaveMsg) pti->pcti->CTI_flags &= ~CTI_INSENDMESSAGE;
@ -560,16 +571,14 @@ MsqRemoveWindowMessagesFromQueue(PVOID pWindow)
{
PostedMessage = CONTAINING_RECORD(CurrentEntry, USER_MESSAGE,
ListEntry);
/* set CurrentEntry to next before destroying message */
CurrentEntry = CurrentEntry->Flink;
if (PostedMessage->Msg.hwnd == Window->head.h)
{
RemoveEntryList(&PostedMessage->ListEntry);
ClearMsgBitsMask(MessageQueue, PostedMessage->QS_Flags);
MsqDestroyMessage(PostedMessage);
CurrentEntry = MessageQueue->PostedMessagesListHead.Flink;
}
else
{
CurrentEntry = CurrentEntry->Flink;
}
}
@ -580,6 +589,9 @@ MsqRemoveWindowMessagesFromQueue(PVOID pWindow)
{
SentMessage = CONTAINING_RECORD(CurrentEntry, USER_SENT_MESSAGE,
ListEntry);
/* set CurrentEntry to next before destroying message */
CurrentEntry = CurrentEntry->Flink;
if(SentMessage->Msg.hwnd == Window->head.h)
{
DPRINT("Notify the sender and remove a message from the queue that had not been dispatched\n");
@ -587,41 +599,7 @@ MsqRemoveWindowMessagesFromQueue(PVOID pWindow)
RemoveEntryList(&SentMessage->ListEntry);
ClearMsgBitsMask(MessageQueue, SentMessage->QS_Flags);
/* remove the message from the dispatching list if neede */
if ((!(SentMessage->HookMessage & MSQ_SENTNOWAIT))
&& (SentMessage->DispatchingListEntry.Flink != NULL))
{
RemoveEntryList(&SentMessage->DispatchingListEntry);
}
/* wake the sender's thread */
if (SentMessage->CompletionEvent != NULL)
{
KeSetEvent(SentMessage->CompletionEvent, IO_NO_INCREMENT, FALSE);
}
if (SentMessage->HasPackedLParam == TRUE)
{
if (SentMessage->Msg.lParam)
ExFreePool((PVOID)SentMessage->Msg.lParam);
}
/* Only if it is not a no wait message */
if (!(SentMessage->HookMessage & MSQ_SENTNOWAIT))
{
/* dereference our and the sender's message queue */
IntDereferenceMessageQueue(MessageQueue);
IntDereferenceMessageQueue(SentMessage->SenderQueue);
}
/* free the message */
ExFreePoolWithTag(SentMessage, TAG_USRMSG);
CurrentEntry = MessageQueue->SentMessagesListHead.Flink;
}
else
{
CurrentEntry = CurrentEntry->Flink;
MsqDestroySentMessage(MessageQueue, SentMessage);
}
}
}
@ -655,7 +633,7 @@ co_MsqSendMessage(PUSER_MESSAGE_QUEUE MessageQueue,
Timeout.QuadPart = (LONGLONG) uTimeout * (LONGLONG) -10000;
/* FIXME - increase reference counter of sender's message queue here */
/* FIXME - increase reference counter of sender's message queue here - isn't it done? */
Message->Msg.hwnd = Wnd;
Message->Msg.message = Msg;
@ -665,9 +643,9 @@ co_MsqSendMessage(PUSER_MESSAGE_QUEUE MessageQueue,
Message->Result = &Result;
Message->lResult = 0;
Message->QS_Flags = 0;
IntReferenceMessageQueue(ThreadQueue);
Message->SenderQueue = ThreadQueue;
Message->CallBackSenderQueue = NULL;
IntReferenceMessageQueue(ThreadQueue);
Message->CompletionCallback = NULL;
Message->CompletionCallbackContext = 0;
Message->HookMessage = HookMessage;
@ -1436,35 +1414,7 @@ MsqCleanupMessageQueue(PUSER_MESSAGE_QUEUE MessageQueue)
DPRINT("Notify the sender and remove a message from the queue that had not been dispatched\n");
/* remove the message from the dispatching list if needed */
if ((!(CurrentSentMessage->HookMessage & MSQ_SENTNOWAIT))
&& (CurrentSentMessage->DispatchingListEntry.Flink != NULL))
{
RemoveEntryList(&CurrentSentMessage->DispatchingListEntry);
}
/* wake the sender's thread */
if (CurrentSentMessage->CompletionEvent != NULL)
{
KeSetEvent(CurrentSentMessage->CompletionEvent, IO_NO_INCREMENT, FALSE);
}
if (CurrentSentMessage->HasPackedLParam == TRUE)
{
if (CurrentSentMessage->Msg.lParam)
ExFreePool((PVOID)CurrentSentMessage->Msg.lParam);
}
/* Only if it is not a no wait message */
if (!(CurrentSentMessage->HookMessage & MSQ_SENTNOWAIT))
{
/* dereference our and the sender's message queue */
IntDereferenceMessageQueue(MessageQueue);
IntDereferenceMessageQueue(CurrentSentMessage->SenderQueue);
}
/* free the message */
ExFreePool(CurrentSentMessage);
MsqDestroySentMessage(MessageQueue, CurrentSentMessage);
}
/* notify senders of dispatching messages. This needs to be cleaned up if e.g.
@ -1475,36 +1425,9 @@ MsqCleanupMessageQueue(PUSER_MESSAGE_QUEUE MessageQueue)
CurrentSentMessage = CONTAINING_RECORD(CurrentEntry, USER_SENT_MESSAGE,
ListEntry);
/* remove the message from the dispatching list */
if(CurrentSentMessage->DispatchingListEntry.Flink != NULL)
{
RemoveEntryList(&CurrentSentMessage->DispatchingListEntry);
}
DPRINT("Notify the sender, the thread has been terminated while dispatching a message!\n");
/* wake the sender's thread */
if (CurrentSentMessage->CompletionEvent != NULL)
{
KeSetEvent(CurrentSentMessage->CompletionEvent, IO_NO_INCREMENT, FALSE);
}
if (CurrentSentMessage->HasPackedLParam == TRUE)
{
if (CurrentSentMessage->Msg.lParam)
ExFreePool((PVOID)CurrentSentMessage->Msg.lParam);
}
/* Only if it is not a no wait message */
if (!(CurrentSentMessage->HookMessage & MSQ_SENTNOWAIT))
{
/* dereference our and the sender's message queue */
IntDereferenceMessageQueue(MessageQueue);
IntDereferenceMessageQueue(CurrentSentMessage->SenderQueue);
}
/* free the message */
ExFreePool(CurrentSentMessage);
MsqDestroySentMessage(MessageQueue, CurrentSentMessage);
}
/* tell other threads not to bother returning any info to us */
@ -1515,6 +1438,7 @@ MsqCleanupMessageQueue(PUSER_MESSAGE_QUEUE MessageQueue)
DispatchingListEntry);
CurrentSentMessage->CompletionEvent = NULL;
CurrentSentMessage->Result = NULL;
CurrentSentMessage->DispatchingListEntry.Flink = NULL; // yeah!
/* do NOT dereference our message queue as it might get attempted to be
locked later */