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Diffstat (limited to '')
| -rw-r--r-- | vcl/win/app/saltimer.cxx | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/vcl/win/app/saltimer.cxx b/vcl/win/app/saltimer.cxx new file mode 100644 index 000000000..5a4760ad5 --- /dev/null +++ b/vcl/win/app/saltimer.cxx @@ -0,0 +1,199 @@ +/* -*- 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 <sal/config.h> +#include <sal/log.hxx> + +#include <tools/time.hxx> + +#include <svsys.h> +#include <win/saldata.hxx> +#include <win/saltimer.h> +#include <win/salinst.h> + +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. + +// in order to prevent concurrent execution of ImplSalStartTimer and double +// deletion of timer (which is extremely likely, given that +// INVALID_HANDLE_VALUE waits for the callback to run on the main thread), +// this must run on the main thread too +void WinSalTimer::ImplStop() +{ + SalData *const pSalData = GetSalData(); + const WinSalInstance *pInst = pSalData->mpInstance; + assert( !pInst || pSalData->mnAppThreadId == GetCurrentThreadId() ); + + if ( m_bSetTimerRunning ) + { + m_bSetTimerRunning = false; + KillTimer( GetSalData()->mpInstance->mhComWnd, m_aWmTimerId ); + } + m_bDirectTimeout = false; + + const HANDLE hTimer = m_nTimerId; + if ( nullptr == hTimer ) + return; + + m_nTimerId = nullptr; + DeleteTimerQueueTimer( nullptr, hTimer, INVALID_HANDLE_VALUE ); + // Keep InvalidateEvent after DeleteTimerQueueTimer, because the event id + // is set in SalTimerProc, which DeleteTimerQueueTimer will finish or cancel. + InvalidateEvent(); +} + +void WinSalTimer::ImplStart( sal_uInt64 nMS ) +{ + SalData* pSalData = GetSalData(); + assert( !pSalData->mpInstance || pSalData->mnAppThreadId == GetCurrentThreadId() ); + + // DueTime parameter is a DWORD, which is always an unsigned 32bit + if (nMS > SAL_MAX_UINT32) + nMS = SAL_MAX_UINT32; + + // cannot change a one-shot timer, so delete it and create a new one + ImplStop(); + + // directly indicate an elapsed timer + m_bDirectTimeout = ( 0 == nMS ); + // probably WT_EXECUTEONLYONCE is not needed, but it enforces Period + // to be 0 and should not hurt; also see + // https://www.microsoft.com/msj/0499/pooling/pooling.aspx + if ( !m_bDirectTimeout ) + CreateTimerQueueTimer(&m_nTimerId, nullptr, SalTimerProc, this, + nMS, 0, WT_EXECUTEINTIMERTHREAD | WT_EXECUTEONLYONCE); + else if ( m_bForceRealTimer ) + { + // so we don't block the nested message queue in move and resize + // with posted 0ms SAL_MSG_TIMER_CALLBACK messages + SetTimer( GetSalData()->mpInstance->mhComWnd, m_aWmTimerId, + USER_TIMER_MINIMUM, nullptr ); + m_bSetTimerRunning = true; + } + // we don't need any wakeup message, as this code can just run in the + // main thread! +} + +WinSalTimer::WinSalTimer() + : m_nTimerId( nullptr ) + , m_bDirectTimeout( false ) + , m_bForceRealTimer( false ) + , m_bSetTimerRunning( false ) +{ +} + +WinSalTimer::~WinSalTimer() +{ + Stop(); +} + +void WinSalTimer::Start( sal_uInt64 nMS ) +{ + WinSalInstance *pInst = GetSalData()->mpInstance; + if ( pInst && !pInst->IsMainThread() ) + { + bool const ret = PostMessageW(pInst->mhComWnd, + SAL_MSG_STARTTIMER, 0, static_cast<LPARAM>(tools::Time::GetSystemTicks()) + nMS); + SAL_WARN_IF(!ret, "vcl", "ERROR: PostMessage() failed!"); + } + else + ImplStart( nMS ); +} + +void WinSalTimer::Stop() +{ + WinSalInstance *pInst = GetSalData()->mpInstance; + if ( pInst && !pInst->IsMainThread() ) + { + bool const ret = PostMessageW(pInst->mhComWnd, + SAL_MSG_STOPTIMER, 0, 0); + SAL_WARN_IF(!ret, "vcl", "ERROR: PostMessage() failed!"); + } + else + ImplStop(); +} + +/** + * This gets invoked from a Timer Queue thread. + * Don't acquire the SolarMutex to avoid deadlocks. + */ +void CALLBACK SalTimerProc(PVOID data, BOOLEAN) +{ + __try + { + WinSalTimer *pTimer = static_cast<WinSalTimer*>( data ); + bool const ret = PostMessageW( + GetSalData()->mpInstance->mhComWnd, SAL_MSG_TIMER_CALLBACK, + static_cast<WPARAM>(pTimer->GetNextEventVersion()), 0 ); +#if OSL_DEBUG_LEVEL > 0 + if (!ret) // SEH prevents using SAL_WARN here? + fputs("ERROR: PostMessage() failed!\n", stderr); +#endif + } + __except(WinSalInstance::WorkaroundExceptionHandlingInUSER32Lib(GetExceptionCode(), GetExceptionInformation())) + { + } +} + +void WinSalTimer::ImplHandleElapsedTimer() +{ + // Test for MouseLeave + SalTestMouseLeave(); + + m_bDirectTimeout = false; + ImplSalYieldMutexAcquireWithWait(); + CallCallback(); + ImplSalYieldMutexRelease(); +} + +void WinSalTimer::ImplHandleTimerEvent( const WPARAM aWPARAM ) +{ + assert( aWPARAM <= SAL_MAX_INT32 ); + if ( !IsValidEventVersion( static_cast<sal_Int32>( aWPARAM ) ) ) + return; + + ImplHandleElapsedTimer(); +} + +void WinSalTimer::SetForceRealTimer( const bool bVal ) +{ + if ( m_bForceRealTimer == bVal ) + return; + + m_bForceRealTimer = bVal; + + // we need a real timer, as m_bDirectTimeout won't be processed + if ( bVal && m_bDirectTimeout ) + Start( 0 ); +} + +void WinSalTimer::ImplHandle_WM_TIMER( const WPARAM aWPARAM ) +{ + assert( m_aWmTimerId == aWPARAM ); + if ( !(m_aWmTimerId == aWPARAM && m_bSetTimerRunning) ) + return; + + m_bSetTimerRunning = false; + KillTimer( GetSalData()->mpInstance->mhComWnd, m_aWmTimerId ); + ImplHandleElapsedTimer(); +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |