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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include <svsys.h>
#include <win/saldata.hxx>
#include <win/saltimer.h>
#include <win/salinst.h>
#if defined ( __MINGW32__ )
#include <sehandler.hxx>
#endif
// maximum period
#define MAX_SYSPERIOD 65533
void CALLBACK SalTimerProc(PVOID pParameter, BOOLEAN bTimerOrWaitFired);
// See http://msdn.microsoft.com/en-us/library/windows/desktop/ms687003%28v=vs.85%29.aspx
// (and related pages) for details about the Timer Queues.
void ImplSalStopTimer(SalData* pSalData)
{
HANDLE hTimer = pSalData->mnTimerId;
pSalData->mnTimerId = 0;
DeleteTimerQueueTimer(NULL, hTimer, INVALID_HANDLE_VALUE);
MSG aMsg;
while (PeekMessageW(&aMsg, 0, SAL_MSG_TIMER_CALLBACK, SAL_MSG_TIMER_CALLBACK, PM_REMOVE))
{
// just remove all the SAL_MSG_TIMER_CALLBACKs
// when the application end, this SAL_MSG_TIMER_CALLBACK start the timer again
// and then crashed in "SalTimerProc" when the object "SalData" was deleted
}
}
void ImplSalStartTimer( sal_uLong nMS, bool bMutex )
{
SalData* pSalData = GetSalData();
// Remember the time of the timer
pSalData->mnTimerMS = nMS;
if (!bMutex)
pSalData->mnTimerOrgMS = nMS;
// duration has to fit into Window's sal_uInt16
if (nMS > MAX_SYSPERIOD)
nMS = MAX_SYSPERIOD;
// change if it exists, create if not
if (pSalData->mnTimerId)
ChangeTimerQueueTimer(NULL, pSalData->mnTimerId, nMS, nMS);
else
CreateTimerQueueTimer(&pSalData->mnTimerId, NULL, SalTimerProc, NULL, nMS, nMS, WT_EXECUTEINTIMERTHREAD);
pSalData->mnNextTimerTime = pSalData->mnLastEventTime + nMS;
}
WinSalTimer::~WinSalTimer()
{
}
void WinSalTimer::Start( sal_uLong nMS )
{
// switch to main thread
SalData* pSalData = GetSalData();
if ( pSalData->mpFirstInstance )
{
if ( pSalData->mnAppThreadId != GetCurrentThreadId() )
{
BOOL const ret = PostMessageW(pSalData->mpFirstInstance->mhComWnd, SAL_MSG_STARTTIMER, 0, (LPARAM)nMS);
SAL_WARN_IF(0 == ret, "vcl", "ERROR: PostMessage() failed!");
}
else
SendMessageW( pSalData->mpFirstInstance->mhComWnd, SAL_MSG_STARTTIMER, 0, (LPARAM)nMS );
}
else
ImplSalStartTimer( nMS, FALSE );
}
void WinSalTimer::Stop()
{
SalData* pSalData = GetSalData();
// If we have a timer, than
if ( pSalData->mnTimerId )
{
ImplSalStopTimer(pSalData);
pSalData->mnNextTimerTime = 0;
}
}
/** This gets invoked from a Timer Queue thread.
Don't acquire the SolarMutex to avoid deadlocks, just wake up the main thread
at better resolution than 10ms.
*/
void CALLBACK SalTimerProc(PVOID, BOOLEAN)
{
#if defined ( __MINGW32__ ) && !defined ( _WIN64 )
jmp_buf jmpbuf;
__SEHandler han;
if (__builtin_setjmp(jmpbuf) == 0)
{
han.Set(jmpbuf, NULL, (__SEHandler::PF)EXCEPTION_EXECUTE_HANDLER);
#else
__try
{
#endif
SalData* pSalData = GetSalData();
// always post message when the timer fires, we will remove the ones
// that happened during execution of the callback later directly from
// the message queue
BOOL const ret = PostMessageW(pSalData->mpFirstInstance->mhComWnd, SAL_MSG_TIMER_CALLBACK, 0, 0);
#if OSL_DEBUG_LEVEL > 0
if (0 == ret) // SEH prevents using SAL_WARN here?
fputs("ERROR: PostMessage() failed!", stderr);
#endif
#if defined ( __MINGW32__ ) && !defined ( _WIN64 )
}
han.Reset();
#else
}
__except(WinSalInstance::WorkaroundExceptionHandlingInUSER32Lib(GetExceptionCode(), GetExceptionInformation()))
{
}
#endif
}
/** Called in the main thread.
We assured that by posting the message from the SalTimeProc only, the real
call then happens when the main thread gets SAL_MSG_TIMER_CALLBACK.
*/
void EmitTimerCallback()
{
SalData* pSalData = GetSalData();
ImplSVData* pSVData = ImplGetSVData();
// Test for MouseLeave
SalTestMouseLeave();
// Try to acquire the mutex. If we don't get the mutex then we
// try this a short time later again.
if (pSVData->mpSalTimer && ImplSalYieldMutexTryToAcquire())
{
bool idle = true; // TODO
pSVData->mpSalTimer->CallCallback( idle );
ImplSalYieldMutexRelease();
// Run the timer in the correct time, if we started this
// with a small timeout, because we didn't get the mutex
if (pSalData->mnTimerId && (pSalData->mnTimerMS != pSalData->mnTimerOrgMS))
ImplSalStartTimer(pSalData->mnTimerOrgMS, false);
}
else
{
ImplSalStartTimer(10, true);
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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