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- Christoph von Wittich spotted a condition when co_MsqPostKeyboardMessage was called from KeyboardThreadMain, the thread was unlocked when waiting in co_MsqSendMessage. The problem; UserLeave was called before waiting on an event. I added checks to verify locking and if not, lock the thread. I'm not sure ATM if co_MsqPostKeyboardMessage should have full locking since it is only used by input.c.

Browse source 
- Added IdlePing to wakeup process threads before waiting on events, it look like the right place to put them.

svn path=/trunk/; revision=34430
This commit is contained in:
James Tabor 2008-07-11 23:07:31 +00:00
parent f25ac715b0
commit f7a34846ba
1 changed files with 34 additions and 10 deletions
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44
reactos/subsystems/win32/win32k/ntuser/msgqueue.c
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@ -64,6 +64,17 @@ static PAGED_LOOKASIDE_LIST TimerLookasideList;
/* FUNCTIONS *****************************************************************/
//
// Wakeup any thread/process waiting on idle input.
//
static VOID FASTCALL
IdlePing(VOID)
{
PW32PROCESS W32d = PsGetCurrentProcessWin32Process();
if (W32d && W32d->InputIdleEvent)
KePulseEvent( W32d->InputIdleEvent, EVENT_INCREMENT, TRUE);
}
HANDLE FASTCALL
IntMsqSetWakeMask(DWORD WakeMask)
{
@ -490,6 +501,8 @@ co_MsqPeekHardwareMessage(PUSER_MESSAGE_QUEUE MessageQueue, HWND hWnd,
WaitObjects[0] = &HardwareMessageQueueLock;
do
{
IdlePing();
UserLeaveCo();
WaitStatus = KeWaitForMultipleObjects(2, WaitObjects, WaitAny, UserRequest,
@ -690,6 +703,9 @@ CLEANUP:
END_CLEANUP;
}
//
// Note: Only called from input.c.
//
VOID FASTCALL
co_MsqPostKeyboardMessage(UINT uMsg, WPARAM wParam, LPARAM lParam)
{
@ -698,6 +714,9 @@ co_MsqPostKeyboardMessage(UINT uMsg, WPARAM wParam, LPARAM lParam)
LARGE_INTEGER LargeTickCount;
KBDLLHOOKSTRUCT KbdHookData;
// Condition may arise when calling MsqPostMessage and waiting for an event.
if (!UserIsEntered()) UserEnterExclusive(); // Fixme: Not sure ATM if this thread is locked.
DPRINT("MsqPostKeyboardMessage(uMsg 0x%x, wParam 0x%x, lParam 0x%x)\n",
uMsg, wParam, lParam);
@ -726,14 +745,14 @@ co_MsqPostKeyboardMessage(UINT uMsg, WPARAM wParam, LPARAM lParam)
}
FocusMessageQueue = IntGetFocusMessageQueue();
if (FocusMessageQueue == NULL)
{
if (FocusMessageQueue == NULL)
{
DPRINT("No focus message queue\n");
return;
}
}
if (FocusMessageQueue->FocusWindow != (HWND)0)
{
if (FocusMessageQueue->FocusWindow != (HWND)0)
{
Msg.hwnd = FocusMessageQueue->FocusWindow;
DPRINT("Msg.hwnd = %x\n", Msg.hwnd);
@ -742,12 +761,13 @@ co_MsqPostKeyboardMessage(UINT uMsg, WPARAM wParam, LPARAM lParam)
IntGetCursorLocation(FocusMessageQueue->Desktop->WindowStation,
&Msg.pt);
MsqPostMessage(FocusMessageQueue, &Msg, FALSE, QS_KEY);
}
else
{
DPRINT("Invalid focus window handle\n");
}
}
else
{
DPRINT("Invalid focus window handle\n");
}
if (UserIsEntered()) UserLeave();
}
VOID FASTCALL
MsqPostHotKeyMessage(PVOID Thread, HWND hWnd, WPARAM wParam, LPARAM lParam)
@ -1087,6 +1107,7 @@ co_MsqSendMessage(PUSER_MESSAGE_QUEUE MessageQueue,
if(Block)
{
IdlePing();
UserLeaveCo();
@ -1149,6 +1170,7 @@ co_MsqSendMessage(PUSER_MESSAGE_QUEUE MessageQueue,
WaitObjects[1] = ThreadQueue->NewMessages;
do
{
IdlePing();
UserLeaveCo();
@ -1304,6 +1326,8 @@ co_MsqWaitForNewMessages(PUSER_MESSAGE_QUEUE MessageQueue, HWND WndFilter,
Timeout = NULL;
}
IdlePing(); // Going to wait so send Idle ping.
UserLeaveCo();
ret = KeWaitForMultipleObjects(2,