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[NTUSER] IntSetTimer: Update HintIndex on each call (#7087)

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* fix CORE-9141 - adding a change to IDEvent after each pass
If the first index is 0 the first returned ID will be 0x8000, which is fine.
Co-authored-by: Joachim Henze <joachim.henze@reactos.org>
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Tomáš Veselý 2024-08-27 08:14:51 +02:00 committed by GitHub
parent 938adaad22
commit fd327db20f
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1 changed files with 9 additions and 3 deletions
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12
win32ss/user/ntuser/timer.c
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@ -19,10 +19,12 @@ static LONG TimeLast = 0;
/* Windows 2000 has room for 32768 window-less timers */ /* Windows 2000 has room for 32768 window-less timers */
#define NUM_WINDOW_LESS_TIMERS 32768 #define NUM_WINDOW_LESS_TIMERS 32768
#define HINTINDEX_BEGIN_VALUE 0
static PFAST_MUTEX Mutex; static PFAST_MUTEX Mutex;
static RTL_BITMAP WindowLessTimersBitMap; static RTL_BITMAP WindowLessTimersBitMap;
static PVOID WindowLessTimersBitMapBuffer; static PVOID WindowLessTimersBitMapBuffer;
static ULONG HintIndex = 1; static ULONG HintIndex = HINTINDEX_BEGIN_VALUE;
ERESOURCE TimerLock; ERESOURCE TimerLock;
@ -219,8 +221,12 @@ IntSetTimer( PWND Window,
{ {
IntLockWindowlessTimerBitmap(); IntLockWindowlessTimerBitmap();
IDEvent = RtlFindClearBitsAndSet(&WindowLessTimersBitMap, 1, HintIndex); IDEvent = RtlFindClearBitsAndSet(&WindowLessTimersBitMap, 1, HintIndex++);
if (IDEvent == (UINT_PTR)-1)
{
HintIndex = HINTINDEX_BEGIN_VALUE;
IDEvent = RtlFindClearBitsAndSet(&WindowLessTimersBitMap, 1, HintIndex++);
}
if (IDEvent == (UINT_PTR) -1) if (IDEvent == (UINT_PTR) -1)
{ {
IntUnlockWindowlessTimerBitmap(); IntUnlockWindowlessTimerBitmap();