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ntoskrnl.exe: Implement KeReadStateEvent. 

Signed-off-by: Derek Lesho <dlesho@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Derek Lesho 2020-07-16 10:17:09 -05:00 committed by Alexandre Julliard
parent 65df36c115
commit 72540c9301
4 changed files with 35 additions and 1 deletions
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2
dlls/ntoskrnl.exe/ntoskrnl.exe.spec
View File

@ -599,7 +599,7 @@
@ stdcall KeQueryTickCount(ptr)
@ stdcall KeQueryTimeIncrement()
@ stub KeRaiseUserException
@ stub KeReadStateEvent
@ stdcall KeReadStateEvent(ptr)
@ stub KeReadStateMutant
@ stub KeReadStateMutex
@ stub KeReadStateQueue

22
dlls/ntoskrnl.exe/sync.c
View File

@ -311,6 +311,28 @@ void WINAPI KeClearEvent( PRKEVENT event )
KeResetEvent( event );
}
/***********************************************************************
* KeReadStateEvent (NTOSKRNL.EXE.@)
*/
LONG WINAPI KeReadStateEvent( PRKEVENT event )
{
HANDLE handle;
TRACE("event %p.\n", event);
if (event->Header.WaitListHead.Blink == INVALID_HANDLE_VALUE)
{
if (!(ObOpenObjectByPointer( event, OBJ_KERNEL_HANDLE, NULL, EVENT_QUERY_STATE, NULL, KernelMode, &handle )))
{
EVENT_BASIC_INFORMATION event_info;
if (!(NtQueryEvent( handle, EventBasicInformation, &event_info, sizeof(event_info), NULL)))
event->Header.SignalState = event_info.EventState;
NtClose( handle );
}
}
return event->Header.SignalState;
}
/***********************************************************************
* KeInitializeSemaphore (NTOSKRNL.EXE.@)
*/

11
dlls/ntoskrnl.exe/tests/driver.c
View File

@ -467,8 +467,14 @@ static void test_sync(void)
ret = wait_single(&manual_event, 0);
ok(ret == STATUS_TIMEOUT, "got %#x\n", ret);
ret = KeReadStateEvent(&manual_event);
ok(ret == 0, "got %d\n", ret);
KeSetEvent(&manual_event, 0, FALSE);
ret = KeReadStateEvent(&manual_event);
ok(ret == 1, "got %d\n", ret);
ret = wait_single(&manual_event, 0);
ok(ret == 0, "got %#x\n", ret);
@ -561,9 +567,14 @@ static void test_sync(void)
ret = ObReferenceObjectByHandle(handle, SYNCHRONIZE, *pExEventObjectType, KernelMode, (void **)&event, NULL);
ok(!ret, "ObReferenceObjectByHandle failed: %#x\n", ret);
ret = wait_single(event, 0);
ok(ret == 0, "got %#x\n", ret);
ret = KeReadStateEvent(event);
ok(ret == 1, "got %d\n", ret);
KeResetEvent(event);
ret = KeReadStateEvent(event);
ok(ret == 0, "got %d\n", ret);
ret = wait_single(event, 0);
ok(ret == STATUS_TIMEOUT, "got %#x\n", ret);
ret = wait_single_handle(handle, 0);

1
include/ddk/wdm.h
View File

@ -1759,6 +1759,7 @@ KAFFINITY WINAPI KeQueryActiveProcessors(void);
void WINAPI KeQuerySystemTime(LARGE_INTEGER*);
void WINAPI KeQueryTickCount(LARGE_INTEGER*);
ULONG WINAPI KeQueryTimeIncrement(void);
LONG WINAPI KeReadStateEvent(PRKEVENT);
void FASTCALL KeReleaseInStackQueuedSpinLockFromDpcLevel(KLOCK_QUEUE_HANDLE*);
LONG WINAPI KeReleaseMutex(PRKMUTEX,BOOLEAN);
LONG WINAPI KeReleaseSemaphore(PRKSEMAPHORE,KPRIORITY,LONG,BOOLEAN);