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No longer calling mm timers callbacks with mm timer crit sect locked.

This commit is contained in:
Eric Pouech 1999-07-15 14:34:23 +00:00 committed by Alexandre Julliard
parent fe9bdf9543
commit 5e61c20bc9
1 changed files with 86 additions and 61 deletions
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147
multimedia/time.c
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@ -26,39 +26,37 @@ DEFAULT_DEBUG_CHANNEL(mmtime)
#define MMSYSTIME_MININTERVAL /* (1) */ (10)
#define MMSYSTIME_MAXINTERVAL (65535)
static void TIME_TriggerCallBack(LPTIMERENTRY lpTimer, DWORD dwCurrent)
static void TIME_TriggerCallBack(LPWINE_TIMERENTRY lpTimer, DWORD dwCurrent)
{
if (lpTimer->lpFunc != (FARPROC16) NULL) {
TRACE("before CallBack (%lu)!\n", dwCurrent);
TRACE("lpFunc=%p wTimerID=%04X dwUser=%08lX !\n",
lpTimer->lpFunc, lpTimer->wTimerID, lpTimer->dwUser);
TRACE("before CallBack (%lu)!\n", dwCurrent);
TRACE("lpFunc=%p wTimerID=%04X dwUser=%08lX !\n",
lpTimer->lpFunc, lpTimer->wTimerID, lpTimer->dwUser);
/* - TimeProc callback that is called here is something strange, under Windows 3.1x it is called
* during interrupt time, is allowed to execute very limited number of API calls (like
* PostMessage), and must reside in DLL (therefore uses stack of active application). So I
* guess current implementation via SetTimer has to be improved upon.
*/
switch (lpTimer->wFlags & 0x30) {
case TIME_CALLBACK_FUNCTION:
if (lpTimer->isWin32)
((LPTIMECALLBACK)lpTimer->lpFunc)(lpTimer->wTimerID, 0, lpTimer->dwUser, 0, 0);
else
Callbacks->CallTimeFuncProc(lpTimer->lpFunc,
lpTimer->wTimerID, 0,
lpTimer->dwUser, 0, 0);
break;
case TIME_CALLBACK_EVENT_SET:
SetEvent((HANDLE)lpTimer->lpFunc);
break;
case TIME_CALLBACK_EVENT_PULSE:
PulseEvent((HANDLE)lpTimer->lpFunc);
break;
default:
FIXME("Unknown callback type 0x%04x for mmtime callback (%p), ignored.\n", lpTimer->wFlags, lpTimer->lpFunc);
break;
}
TRACE("after CallBack !\n");
/* - TimeProc callback that is called here is something strange, under Windows 3.1x it is called
* during interrupt time, is allowed to execute very limited number of API calls (like
* PostMessage), and must reside in DLL (therefore uses stack of active application). So I
* guess current implementation via SetTimer has to be improved upon.
*/
switch (lpTimer->wFlags & 0x30) {
case TIME_CALLBACK_FUNCTION:
if (lpTimer->wFlags & WINE_TIMER_IS32)
((LPTIMECALLBACK)lpTimer->lpFunc)(lpTimer->wTimerID, 0, lpTimer->dwUser, 0, 0);
else
Callbacks->CallTimeFuncProc(lpTimer->lpFunc,
lpTimer->wTimerID, 0,
lpTimer->dwUser, 0, 0);
break;
case TIME_CALLBACK_EVENT_SET:
SetEvent((HANDLE)lpTimer->lpFunc);
break;
case TIME_CALLBACK_EVENT_PULSE:
PulseEvent((HANDLE)lpTimer->lpFunc);
break;
default:
FIXME("Unknown callback type 0x%04x for mmtime callback (%p), ignored.\n", lpTimer->wFlags, lpTimer->lpFunc);
break;
}
TRACE("after CallBack !\n");
}
/**************************************************************************
@ -66,29 +64,45 @@ static void TIME_TriggerCallBack(LPTIMERENTRY lpTimer, DWORD dwCurrent)
*/
static void CALLBACK TIME_MMSysTimeCallback(ULONG_PTR ptr_)
{
LPTIMERENTRY lpTimer, lpNextTimer;
LPWINE_TIMERENTRY lpTimer, lpNextTimer;
LPWINE_MM_IDATA iData = (LPWINE_MM_IDATA)ptr_;
int idx;
iData->mmSysTimeMS += MMSYSTIME_MININTERVAL;
/* this is a hack...
* since timeSetEvent() and timeKillEvent() can be called
/* since timeSetEvent() and timeKillEvent() can be called
* from 16 bit code, there are cases where win16 lock is
* locked upon entering timeSetEvent(), and then the process
* heap is locked. OTOH, in this callback the process heap
* is first locked, and the win16 lock can be locked while
* calling a client callback. to avoid deadlocks, the process
* heap and win 16 lock must always be locked in the same
* order...
* locked upon entering timeSetEvent(), and then the mm timer
* critical section is locked. This function cannot call the
* timer callback with the crit sect locked (because callback
* may need to acquire Win16 lock, thus providing a deadlock
* situation).
* To cope with that, we just copy the WINE_TIMERENTRY struct
* that need to trigger the callback, and call it without the
* mm timer crit sect locked. The bad side of this
* implementation is that, in some cases, the callback may be
* invoked *after* a timer has been destroyed...
* EPP 99/07/13
*/
SYSLEVEL_EnterWin16Lock();
EnterCriticalSection(&iData->cs);
idx = 0;
EnterCriticalSection(&iData->cs);
for (lpTimer = iData->lpTimerList; lpTimer != NULL; ) {
lpNextTimer = lpTimer->lpNext;
if (lpTimer->wCurTime < MMSYSTIME_MININTERVAL) {
lpTimer->wCurTime = lpTimer->wDelay;
TIME_TriggerCallBack(lpTimer, iData->mmSysTimeMS);
/* since lpTimer->wDelay is >= MININTERVAL, wCurTime value
* shall be correct (>= 0)
*/
lpTimer->wCurTime += lpTimer->wDelay - MMSYSTIME_MININTERVAL;
if (lpTimer->lpFunc) {
if (idx == iData->nSizeLpTimers) {
iData->lpTimers = (LPWINE_TIMERENTRY)
HeapReAlloc(GetProcessHeap(), 0,
iData->lpTimers,
++iData->nSizeLpTimers * sizeof(WINE_TIMERENTRY));
}
iData->lpTimers[idx++] = *lpTimer;
}
if (lpTimer->wFlags & TIME_ONESHOT)
timeKillEvent(lpTimer->wTimerID);
} else {
@ -96,9 +110,11 @@ static void CALLBACK TIME_MMSysTimeCallback(ULONG_PTR ptr_)
}
lpTimer = lpNextTimer;
}
LeaveCriticalSection(&iData->cs);
SYSLEVEL_LeaveWin16Lock();
while (idx > 0) {
TIME_TriggerCallBack(iData->lpTimers + --idx, iData->mmSysTimeMS);
}
}
/**************************************************************************
@ -177,20 +193,22 @@ MMRESULT16 WINAPI timeGetSystemTime16(LPMMTIME16 lpTime, UINT16 wSize)
* timeSetEventInternal [internal]
*/
static WORD timeSetEventInternal(UINT wDelay, UINT wResol,
FARPROC16 lpFunc, DWORD dwUser,
UINT wFlags, UINT16 isWin32)
FARPROC16 lpFunc, DWORD dwUser, UINT wFlags)
{
WORD wNewID = 0;
LPTIMERENTRY lpNewTimer;
LPTIMERENTRY lpTimer;
LPWINE_TIMERENTRY lpNewTimer;
LPWINE_TIMERENTRY lpTimer;
LPWINE_MM_IDATA iData;
TRACE("(%u, %u, %p, %08lX, %04X);\n", wDelay, wResol, lpFunc, dwUser, wFlags);
lpNewTimer = (LPTIMERENTRY)HeapAlloc(GetProcessHeap(), 0, sizeof(TIMERENTRY));
lpNewTimer = (LPWINE_TIMERENTRY)HeapAlloc(GetProcessHeap(), 0, sizeof(WINE_TIMERENTRY));
if (lpNewTimer == NULL)
return 0;
if (wDelay < MMSYSTIME_MININTERVAL || wDelay > MMSYSTIME_MAXINTERVAL)
return 0;
iData = MULTIMEDIA_MMTimeStart();
if (!iData)
@ -200,7 +218,6 @@ static WORD timeSetEventInternal(UINT wDelay, UINT wResol,
lpNewTimer->wDelay = wDelay;
lpNewTimer->wResol = wResol;
lpNewTimer->lpFunc = lpFunc;
lpNewTimer->isWin32 = isWin32;
lpNewTimer->dwUser = dwUser;
lpNewTimer->wFlags = wFlags;
@ -227,7 +244,11 @@ static WORD timeSetEventInternal(UINT wDelay, UINT wResol,
MMRESULT WINAPI timeSetEvent(UINT wDelay, UINT wResol, LPTIMECALLBACK lpFunc,
DWORD dwUser, UINT wFlags)
{
return timeSetEventInternal(wDelay, wResol, (FARPROC16)lpFunc, dwUser, wFlags, 1);
if (wFlags & WINE_TIMER_IS32)
WARN("Unknown windows flag... wine internally used.. ooch\n");
return timeSetEventInternal(wDelay, wResol, (FARPROC16)lpFunc,
dwUser, wFlags|WINE_TIMER_IS32);
}
/**************************************************************************
@ -236,7 +257,11 @@ MMRESULT WINAPI timeSetEvent(UINT wDelay, UINT wResol, LPTIMECALLBACK lpFunc,
MMRESULT16 WINAPI timeSetEvent16(UINT16 wDelay, UINT16 wResol, LPTIMECALLBACK16 lpFunc,
DWORD dwUser, UINT16 wFlags)
{
return timeSetEventInternal(wDelay, wResol, (FARPROC16)lpFunc, dwUser, wFlags, 0);
if (wFlags & WINE_TIMER_IS32)
WARN("Unknown windows flag... wine internally used.. ooch\n");
return timeSetEventInternal(wDelay, wResol, (FARPROC16)lpFunc,
dwUser, wFlags & ~WINE_TIMER_IS32);
}
/**************************************************************************
@ -244,24 +269,24 @@ MMRESULT16 WINAPI timeSetEvent16(UINT16 wDelay, UINT16 wResol, LPTIMECALLBACK16
*/
MMRESULT WINAPI timeKillEvent(UINT wID)
{
LPTIMERENTRY* lpTimer;
LPWINE_TIMERENTRY* lpTimer;
LPWINE_MM_IDATA iData = MULTIMEDIA_GetIData();
MMRESULT ret = MMSYSERR_INVALPARAM;
EnterCriticalSection(&iData->cs);
/* remove WINE_TIMERENTRY from list */
for (lpTimer = &iData->lpTimerList; *lpTimer; lpTimer = &((*lpTimer)->lpNext)) {
if (wID == (*lpTimer)->wTimerID) {
LPTIMERENTRY xlptimer = (*lpTimer)->lpNext;
HeapFree(GetProcessHeap(), 0, *lpTimer);
*lpTimer = xlptimer;
ret = TIMERR_NOERROR;
*lpTimer = (*lpTimer)->lpNext;
break;
}
}
LeaveCriticalSection(&iData->cs);
if (*lpTimer) {
HeapFree(GetProcessHeap(), 0, *lpTimer);
ret = TIMERR_NOERROR;
}
return ret;
}