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Sweden-Number/multimedia/time.c

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/* -*- tab-width: 8; c-basic-offset: 4 -*- */
/*
* MMSYTEM time functions
*
* Copyright 1993 Martin Ayotte
*/
#include <time.h>
#include <sys/time.h>
#include "winbase.h"
#include "callback.h"
#include "multimedia.h"
#include "services.h"
#include "syslevel.h"
#include "debugtools.h"
DEFAULT_DEBUG_CHANNEL(mmtime)
/*
* FIXME
* We're using "1" as the mininum resolution to the timer,
* as Windows 95 does, according to the docs. Maybe it should
* depend on the computers resources!
*/
#define MMSYSTIME_MININTERVAL /* (1) */ (10)
#define MMSYSTIME_MAXINTERVAL (65535)
static void TIME_TriggerCallBack(LPWINE_TIMERENTRY lpTimer, DWORD dwCurrent)
{
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->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");
}
/**************************************************************************
* TIME_MMSysTimeCallback
*/
static void CALLBACK TIME_MMSysTimeCallback(ULONG_PTR ptr_)
{
LPWINE_TIMERENTRY lpTimer, lpNextTimer;
LPWINE_MM_IDATA iData = (LPWINE_MM_IDATA)ptr_;
int idx;
iData->mmSysTimeMS += MMSYSTIME_MININTERVAL;
/* 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 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
*/
idx = 0;
EnterCriticalSection(&iData->cs);
for (lpTimer = iData->lpTimerList; lpTimer != NULL; ) {
lpNextTimer = lpTimer->lpNext;
if (lpTimer->wCurTime < MMSYSTIME_MININTERVAL) {
/* 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 {
lpTimer->wCurTime -= MMSYSTIME_MININTERVAL;
}
lpTimer = lpNextTimer;
}
LeaveCriticalSection(&iData->cs);
while (idx > 0) {
TIME_TriggerCallBack(iData->lpTimers + --idx, iData->mmSysTimeMS);
}
}
/**************************************************************************
* MULTIMEDIA_MMTimeStart [internal]
*/
static LPWINE_MM_IDATA MULTIMEDIA_MMTimeStart(void)
{
LPWINE_MM_IDATA iData = MULTIMEDIA_GetIData();
if (!iData || IsBadWritePtr(iData, sizeof(WINE_MM_IDATA))) {
ERR("iData is not correctly set, please report. Expect failure.\n");
return 0;
}
/* FIXME: the service timer is never killed, even when process is
* detached from this DLL
*/
/* one could think it's possible to stop the service thread activity when no more
* mm timers are active, but this would require to keep mmSysTimeMS up-to-date
* without being incremented within the service thread callback.
*/
if (!iData->hMMTimer) {
iData->mmSysTimeMS = GetTickCount();
iData->lpTimerList = NULL;
iData->hMMTimer = SERVICE_AddTimer(MMSYSTIME_MININTERVAL*1000L, TIME_MMSysTimeCallback, (DWORD)iData);
InitializeCriticalSection(&iData->cs);
}
return iData;
}
/**************************************************************************
* timeGetSystemTime [WINMM.140]
*/
MMRESULT WINAPI timeGetSystemTime(LPMMTIME lpTime, UINT wSize)
{
LPWINE_MM_IDATA iData;
TRACE("(%p, %u);\n", lpTime, wSize);
if (wSize >= sizeof(*lpTime)) {
iData = MULTIMEDIA_MMTimeStart();
if (!iData)
return MMSYSERR_NOMEM;
lpTime->wType = TIME_MS;
lpTime->u.ms = iData->mmSysTimeMS;
TRACE("=> %lu\n", iData->mmSysTimeMS);
}
return 0;
}
/**************************************************************************
* timeGetSystemTime [MMSYSTEM.601]
*/
MMRESULT16 WINAPI timeGetSystemTime16(LPMMTIME16 lpTime, UINT16 wSize)
{
LPWINE_MM_IDATA iData;
TRACE("(%p, %u);\n", lpTime, wSize);
if (wSize >= sizeof(*lpTime)) {
iData = MULTIMEDIA_MMTimeStart();
if (!iData)
return MMSYSERR_NOMEM;
lpTime->wType = TIME_MS;
lpTime->u.ms = iData->mmSysTimeMS;
TRACE("=> %lu\n", iData->mmSysTimeMS);
}
return 0;
}
/**************************************************************************
* timeSetEventInternal [internal]
*/
static WORD timeSetEventInternal(UINT wDelay, UINT wResol,
FARPROC16 lpFunc, DWORD dwUser, UINT wFlags)
{
WORD wNewID = 0;
LPWINE_TIMERENTRY lpNewTimer;
LPWINE_TIMERENTRY lpTimer;
LPWINE_MM_IDATA iData;
TRACE("(%u, %u, %p, %08lX, %04X);\n", wDelay, wResol, lpFunc, dwUser, wFlags);
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)
return 0;
lpNewTimer->wCurTime = wDelay;
lpNewTimer->wDelay = wDelay;
lpNewTimer->wResol = wResol;
lpNewTimer->lpFunc = lpFunc;
lpNewTimer->dwUser = dwUser;
lpNewTimer->wFlags = wFlags;
TRACE("lpFunc=0x%08lx !\n", (DWORD)lpFunc);
EnterCriticalSection(&iData->cs);
for (lpTimer = iData->lpTimerList; lpTimer != NULL; lpTimer = lpTimer->lpNext) {
wNewID = MAX(wNewID, lpTimer->wTimerID);
}
lpNewTimer->lpNext = iData->lpTimerList;
iData->lpTimerList = lpNewTimer;
lpNewTimer->wTimerID = wNewID + 1;
LeaveCriticalSection(&iData->cs);
return wNewID + 1;
}
/**************************************************************************
* timeSetEvent [MMSYSTEM.602]
*/
MMRESULT WINAPI timeSetEvent(UINT wDelay, UINT wResol, LPTIMECALLBACK lpFunc,
DWORD dwUser, UINT wFlags)
{
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);
}
/**************************************************************************
* timeSetEvent [MMSYSTEM.602]
*/
MMRESULT16 WINAPI timeSetEvent16(UINT16 wDelay, UINT16 wResol, LPTIMECALLBACK16 lpFunc,
DWORD dwUser, UINT16 wFlags)
{
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);
}
/**************************************************************************
* timeKillEvent [WINMM.142]
*/
MMRESULT WINAPI timeKillEvent(UINT wID)
{
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) {
*lpTimer = (*lpTimer)->lpNext;
break;
}
}
LeaveCriticalSection(&iData->cs);
if (*lpTimer) {
HeapFree(GetProcessHeap(), 0, *lpTimer);
ret = TIMERR_NOERROR;
}
return ret;
}
/**************************************************************************
* timeKillEvent [MMSYSTEM.603]
*/
MMRESULT16 WINAPI timeKillEvent16(UINT16 wID)
{
return timeKillEvent(wID);
}
/**************************************************************************
* timeGetDevCaps [WINMM.139]
*/
MMRESULT WINAPI timeGetDevCaps(LPTIMECAPS lpCaps, UINT wSize)
{
TRACE("(%p, %u) !\n", lpCaps, wSize);
lpCaps->wPeriodMin = MMSYSTIME_MININTERVAL;
lpCaps->wPeriodMax = MMSYSTIME_MAXINTERVAL;
return 0;
}
/**************************************************************************
* timeGetDevCaps [MMSYSTEM.604]
*/
MMRESULT16 WINAPI timeGetDevCaps16(LPTIMECAPS16 lpCaps, UINT16 wSize)
{
TRACE("(%p, %u) !\n", lpCaps, wSize);
lpCaps->wPeriodMin = MMSYSTIME_MININTERVAL;
lpCaps->wPeriodMax = MMSYSTIME_MAXINTERVAL;
return 0;
}
/**************************************************************************
* timeBeginPeriod [WINMM.137]
*/
MMRESULT WINAPI timeBeginPeriod(UINT wPeriod)
{
TRACE("(%u) !\n", wPeriod);
if (wPeriod < MMSYSTIME_MININTERVAL || wPeriod > MMSYSTIME_MAXINTERVAL)
return TIMERR_NOCANDO;
return 0;
}
/**************************************************************************
* timeBeginPeriod16 [MMSYSTEM.605]
*/
MMRESULT16 WINAPI timeBeginPeriod16(UINT16 wPeriod)
{
TRACE("(%u) !\n", wPeriod);
if (wPeriod < MMSYSTIME_MININTERVAL || wPeriod > MMSYSTIME_MAXINTERVAL)
return TIMERR_NOCANDO;
return 0;
}
/**************************************************************************
* timeEndPeriod [WINMM.138]
*/
MMRESULT WINAPI timeEndPeriod(UINT wPeriod)
{
TRACE("(%u) !\n", wPeriod);
if (wPeriod < MMSYSTIME_MININTERVAL || wPeriod > MMSYSTIME_MAXINTERVAL)
return TIMERR_NOCANDO;
return 0;
}
/**************************************************************************
* timeEndPeriod16 [MMSYSTEM.606]
*/
MMRESULT16 WINAPI timeEndPeriod16(UINT16 wPeriod)
{
TRACE("(%u) !\n", wPeriod);
if (wPeriod < MMSYSTIME_MININTERVAL || wPeriod > MMSYSTIME_MAXINTERVAL)
return TIMERR_NOCANDO;
return 0;
}
/**************************************************************************
* timeGetTime [MMSYSTEM.607][WINMM.141]
*/
DWORD WINAPI timeGetTime(void)
{
return MULTIMEDIA_MMTimeStart()->mmSysTimeMS;
}
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