366 lines
11 KiB
C
366 lines
11 KiB
C
/* -*- tab-width: 8; c-basic-offset: 4 -*- */
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/*
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* MMSYSTEM time functions
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*
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* Copyright 1993 Martin Ayotte
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "config.h"
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#include "wine/port.h"
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#include <stdarg.h>
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#include <time.h>
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#ifdef HAVE_SYS_TIME_H
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# include <sys/time.h>
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#endif
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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#include "windef.h"
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#include "winbase.h"
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#include "mmsystem.h"
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#include "winemm.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(mmtime);
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/*
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* FIXME
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* We're using "1" as the mininum resolution to the timer,
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* as Windows 95 does, according to the docs. Maybe it should
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* depend on the computers resources!
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*/
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#define MMSYSTIME_MININTERVAL (1)
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#define MMSYSTIME_MAXINTERVAL (65535)
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#define MMSYSTIME_STDINTERVAL (10) /* reasonable value? */
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static void TIME_TriggerCallBack(LPWINE_TIMERENTRY lpTimer)
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{
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TRACE("before CallBack => lpFunc=%p wTimerID=%04X dwUser=%08lX !\n",
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lpTimer->lpFunc, lpTimer->wTimerID, lpTimer->dwUser);
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/* - TimeProc callback that is called here is something strange, under Windows 3.1x it is called
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* during interrupt time, is allowed to execute very limited number of API calls (like
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* PostMessage), and must reside in DLL (therefore uses stack of active application). So I
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* guess current implementation via SetTimer has to be improved upon.
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*/
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switch (lpTimer->wFlags & 0x30) {
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case TIME_CALLBACK_FUNCTION:
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if (lpTimer->wFlags & WINE_TIMER_IS32)
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(lpTimer->lpFunc)(lpTimer->wTimerID, 0, lpTimer->dwUser, 0, 0);
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else if (pFnCallMMDrvFunc16)
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pFnCallMMDrvFunc16((DWORD)lpTimer->lpFunc, lpTimer->wTimerID, 0,
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lpTimer->dwUser, 0, 0);
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break;
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case TIME_CALLBACK_EVENT_SET:
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SetEvent((HANDLE)lpTimer->lpFunc);
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break;
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case TIME_CALLBACK_EVENT_PULSE:
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PulseEvent((HANDLE)lpTimer->lpFunc);
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break;
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default:
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FIXME("Unknown callback type 0x%04x for mmtime callback (%p), ignored.\n",
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lpTimer->wFlags, lpTimer->lpFunc);
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break;
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}
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TRACE("after CallBack !\n");
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}
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/**************************************************************************
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* TIME_MMSysTimeCallback
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*/
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static void CALLBACK TIME_MMSysTimeCallback(LPWINE_MM_IDATA iData)
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{
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LPWINE_TIMERENTRY lpTimer, lpNextTimer;
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DWORD delta = GetTickCount() - iData->mmSysTimeMS;
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int idx;
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TRACE("Time delta: %ld\n", delta);
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while (delta >= MMSYSTIME_MININTERVAL) {
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delta -= MMSYSTIME_MININTERVAL;
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iData->mmSysTimeMS += MMSYSTIME_MININTERVAL;
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/* since timeSetEvent() and timeKillEvent() can be called
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* from 16 bit code, there are cases where win16 lock is
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* locked upon entering timeSetEvent(), and then the mm timer
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* critical section is locked. This function cannot call the
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* timer callback with the crit sect locked (because callback
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* may need to acquire Win16 lock, thus providing a deadlock
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* situation).
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* To cope with that, we just copy the WINE_TIMERENTRY struct
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* that need to trigger the callback, and call it without the
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* mm timer crit sect locked. The bad side of this
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* implementation is that, in some cases, the callback may be
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* invoked *after* a timer has been destroyed...
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* EPP 99/07/13
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*/
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idx = 0;
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EnterCriticalSection(&iData->cs);
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for (lpTimer = iData->lpTimerList; lpTimer != NULL; ) {
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lpNextTimer = lpTimer->lpNext;
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if (lpTimer->uCurTime < MMSYSTIME_MININTERVAL) {
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/* since lpTimer->wDelay is >= MININTERVAL, wCurTime value
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* shall be correct (>= 0)
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*/
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lpTimer->uCurTime += lpTimer->wDelay - MMSYSTIME_MININTERVAL;
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if (lpTimer->lpFunc) {
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if (idx == iData->nSizeLpTimers) {
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if (iData->lpTimers)
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iData->lpTimers = (LPWINE_TIMERENTRY)
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HeapReAlloc(GetProcessHeap(), 0,
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iData->lpTimers,
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++iData->nSizeLpTimers * sizeof(WINE_TIMERENTRY));
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else
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iData->lpTimers = (LPWINE_TIMERENTRY)
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HeapAlloc(GetProcessHeap(), 0,
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++iData->nSizeLpTimers * sizeof(WINE_TIMERENTRY));
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}
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iData->lpTimers[idx++] = *lpTimer;
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}
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/* TIME_ONESHOT is defined as 0 */
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if (!(lpTimer->wFlags & TIME_PERIODIC))
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timeKillEvent(lpTimer->wTimerID);
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} else {
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lpTimer->uCurTime -= MMSYSTIME_MININTERVAL;
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}
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lpTimer = lpNextTimer;
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}
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LeaveCriticalSection(&iData->cs);
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while (idx > 0) {
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TIME_TriggerCallBack(&iData->lpTimers[--idx]);
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}
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}
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}
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/**************************************************************************
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* TIME_MMSysTimeThread
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*/
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static DWORD CALLBACK TIME_MMSysTimeThread(LPVOID arg)
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{
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LPWINE_MM_IDATA iData = (LPWINE_MM_IDATA)arg;
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volatile HANDLE *pActive = (volatile HANDLE *)&iData->hMMTimer;
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DWORD last_time, cur_time;
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usleep(MMSYSTIME_STDINTERVAL * 1000);
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last_time = GetTickCount();
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while (*pActive) {
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TIME_MMSysTimeCallback(iData);
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cur_time = GetTickCount();
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while (last_time < cur_time)
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last_time += MMSYSTIME_STDINTERVAL;
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usleep((last_time - cur_time) * 1000);
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}
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return 0;
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}
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/**************************************************************************
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* TIME_MMTimeStart
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*/
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void TIME_MMTimeStart(void)
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{
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/* one could think it's possible to stop the service thread activity when no more
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* mm timers are active, but this would require to keep mmSysTimeMS up-to-date
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* without being incremented within the service thread callback.
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*/
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if (!WINMM_IData->hMMTimer) {
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WINMM_IData->mmSysTimeMS = GetTickCount();
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WINMM_IData->lpTimerList = NULL;
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WINMM_IData->hMMTimer = CreateThread(NULL, 0, TIME_MMSysTimeThread, WINMM_IData, 0, NULL);
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}
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}
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/**************************************************************************
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* TIME_MMTimeStop
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*/
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void TIME_MMTimeStop(void)
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{
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if (WINMM_IData->hMMTimer) {
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HANDLE hMMTimer = WINMM_IData->hMMTimer;
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WINMM_IData->hMMTimer = 0;
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WaitForSingleObject(hMMTimer, INFINITE);
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CloseHandle(hMMTimer);
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}
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}
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/**************************************************************************
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* timeGetSystemTime [WINMM.@]
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*/
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MMRESULT WINAPI timeGetSystemTime(LPMMTIME lpTime, UINT wSize)
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{
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TRACE("(%p, %u);\n", lpTime, wSize);
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if (wSize >= sizeof(*lpTime)) {
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TIME_MMTimeStart();
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lpTime->wType = TIME_MS;
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lpTime->u.ms = WINMM_IData->mmSysTimeMS;
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TRACE("=> %lu\n", lpTime->u.ms);
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}
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return 0;
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}
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/**************************************************************************
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* TIME_SetEventInternal [internal]
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*/
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WORD TIME_SetEventInternal(UINT wDelay, UINT wResol,
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LPTIMECALLBACK lpFunc, DWORD dwUser, UINT wFlags)
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{
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WORD wNewID = 0;
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LPWINE_TIMERENTRY lpNewTimer;
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LPWINE_TIMERENTRY lpTimer;
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TRACE("(%u, %u, %p, %08lX, %04X);\n", wDelay, wResol, lpFunc, dwUser, wFlags);
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lpNewTimer = (LPWINE_TIMERENTRY)HeapAlloc(GetProcessHeap(), 0, sizeof(WINE_TIMERENTRY));
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if (lpNewTimer == NULL)
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return 0;
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if (wDelay < MMSYSTIME_MININTERVAL || wDelay > MMSYSTIME_MAXINTERVAL)
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return 0;
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TIME_MMTimeStart();
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lpNewTimer->uCurTime = wDelay;
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lpNewTimer->wDelay = wDelay;
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lpNewTimer->wResol = wResol;
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lpNewTimer->lpFunc = lpFunc;
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lpNewTimer->dwUser = dwUser;
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lpNewTimer->wFlags = wFlags;
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EnterCriticalSection(&WINMM_IData->cs);
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for (lpTimer = WINMM_IData->lpTimerList; lpTimer != NULL; lpTimer = lpTimer->lpNext) {
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wNewID = max(wNewID, lpTimer->wTimerID);
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}
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lpNewTimer->lpNext = WINMM_IData->lpTimerList;
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WINMM_IData->lpTimerList = lpNewTimer;
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lpNewTimer->wTimerID = wNewID + 1;
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LeaveCriticalSection(&WINMM_IData->cs);
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TRACE("=> %u\n", wNewID + 1);
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return wNewID + 1;
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}
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/**************************************************************************
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* timeSetEvent [WINMM.@]
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*/
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MMRESULT WINAPI timeSetEvent(UINT wDelay, UINT wResol, LPTIMECALLBACK lpFunc,
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DWORD_PTR dwUser, UINT wFlags)
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{
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if (wFlags & WINE_TIMER_IS32)
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WARN("Unknown windows flag... wine internally used.. ooch\n");
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return TIME_SetEventInternal(wDelay, wResol, lpFunc,
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dwUser, wFlags|WINE_TIMER_IS32);
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}
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/**************************************************************************
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* timeKillEvent [WINMM.@]
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*/
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MMRESULT WINAPI timeKillEvent(UINT wID)
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{
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LPWINE_TIMERENTRY* lpTimer;
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MMRESULT ret = MMSYSERR_INVALPARAM;
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TRACE("(%u)\n", wID);
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EnterCriticalSection(&WINMM_IData->cs);
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/* remove WINE_TIMERENTRY from list */
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for (lpTimer = &WINMM_IData->lpTimerList; *lpTimer; lpTimer = &(*lpTimer)->lpNext) {
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if (wID == (*lpTimer)->wTimerID) {
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break;
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}
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}
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LeaveCriticalSection(&WINMM_IData->cs);
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if (*lpTimer) {
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LPWINE_TIMERENTRY lpTemp = *lpTimer;
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/* unlink timer of id 'wID' */
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*lpTimer = (*lpTimer)->lpNext;
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HeapFree(GetProcessHeap(), 0, lpTemp);
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ret = TIMERR_NOERROR;
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} else {
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WARN("wID=%u is not a valid timer ID\n", wID);
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}
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return ret;
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}
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/**************************************************************************
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* timeGetDevCaps [WINMM.@]
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*/
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MMRESULT WINAPI timeGetDevCaps(LPTIMECAPS lpCaps, UINT wSize)
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{
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TRACE("(%p, %u) !\n", lpCaps, wSize);
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lpCaps->wPeriodMin = MMSYSTIME_MININTERVAL;
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lpCaps->wPeriodMax = MMSYSTIME_MAXINTERVAL;
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return 0;
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}
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/**************************************************************************
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* timeBeginPeriod [WINMM.@]
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*/
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MMRESULT WINAPI timeBeginPeriod(UINT wPeriod)
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{
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TRACE("(%u) !\n", wPeriod);
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if (wPeriod < MMSYSTIME_MININTERVAL || wPeriod > MMSYSTIME_MAXINTERVAL)
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return TIMERR_NOCANDO;
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return 0;
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}
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/**************************************************************************
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* timeEndPeriod [WINMM.@]
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*/
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MMRESULT WINAPI timeEndPeriod(UINT wPeriod)
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{
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TRACE("(%u) !\n", wPeriod);
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if (wPeriod < MMSYSTIME_MININTERVAL || wPeriod > MMSYSTIME_MAXINTERVAL)
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return TIMERR_NOCANDO;
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return 0;
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}
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/**************************************************************************
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* timeGetTime [MMSYSTEM.607]
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* timeGetTime [WINMM.@]
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*/
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DWORD WINAPI timeGetTime(void)
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{
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DWORD count;
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/* FIXME: releasing the win16 lock here is a temporary hack (I hope)
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* that lets mciavi.drv run correctly
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*/
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if (pFnReleaseThunkLock) pFnReleaseThunkLock(&count);
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TIME_MMTimeStart();
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if (pFnRestoreThunkLock) pFnRestoreThunkLock(count);
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return WINMM_IData->mmSysTimeMS;
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}
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