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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 <salusereventlist.hxx>
#include <salwtype.hxx>
#include <algorithm>
#include <cstdlib>
#include <exception>
#include <typeinfo>
#include <com/sun/star/uno/Exception.hpp>
#include <tools/debug.hxx>
#include <tools/diagnose_ex.h>
#include <sal/log.hxx>
#include <sal/types.h>
#include <svdata.hxx>
SalUserEventList::SalUserEventList()
: m_bAllUserEventProcessedSignaled( true )
, m_aProcessingThread(0)
{
}
SalUserEventList::~SalUserEventList() COVERITY_NOEXCEPT_FALSE
{
}
void SalUserEventList::insertFrame( SalFrame* pFrame )
{
auto aPair = m_aFrames.insert( pFrame );
assert( aPair.second ); (void) aPair;
}
void SalUserEventList::eraseFrame( SalFrame* pFrame )
{
auto it = m_aFrames.find( pFrame );
assert( it != m_aFrames.end() );
if ( it != m_aFrames.end() )
m_aFrames.erase( it );
}
bool SalUserEventList::DispatchUserEvents( bool bHandleAllCurrentEvents )
{
bool bWasEvent = false;
oslThreadIdentifier aCurId = osl::Thread::getCurrentIdentifier();
DBG_TESTSOLARMUTEX();
std::unique_lock aResettableListGuard(m_aUserEventsMutex);
if (!m_aUserEvents.empty())
{
if (bHandleAllCurrentEvents)
{
if (m_aProcessingUserEvents.empty())
m_aProcessingUserEvents.swap(m_aUserEvents);
else
m_aProcessingUserEvents.splice(m_aProcessingUserEvents.end(), m_aUserEvents);
}
else if (m_aProcessingUserEvents.empty())
{
m_aProcessingUserEvents.push_back( m_aUserEvents.front() );
m_aUserEvents.pop_front();
}
}
if (HasUserEvents_NoLock())
{
bWasEvent = true;
m_aProcessingThread = aCurId;
SalUserEvent aEvent( nullptr, nullptr, SalEvent::NONE );
do {
if (m_aProcessingUserEvents.empty() || aCurId != m_aProcessingThread)
break;
aEvent = m_aProcessingUserEvents.front();
m_aProcessingUserEvents.pop_front();
// remember to reset the guard before break or continue the loop
aResettableListGuard.unlock();
if ( !isFrameAlive( aEvent.m_pFrame ) )
{
if ( aEvent.m_nEvent == SalEvent::UserEvent )
delete static_cast< ImplSVEvent* >( aEvent.m_pData );
aResettableListGuard.lock();
continue;
}
/*
* Current policy is that scheduler tasks aren't allowed to throw an exception.
* Because otherwise the exception is caught somewhere totally unrelated.
* TODO Ideally we could capture a proper backtrace and feed this into breakpad,
* which is do-able, but requires writing some assembly.
* See also Scheduler::CallbackTaskScheduling
*/
#ifdef IOS
ProcessEvent( aEvent );
#else
// the noexcept here means that (a) we abort and (b) debuggers will
// likely trigger at the throw site instead of here, making the debugging
// experience better when something goes wrong.
auto process = [&aEvent, this] () noexcept { ProcessEvent(aEvent); };
process();
#endif
aResettableListGuard.lock();
if (!bHandleAllCurrentEvents)
break;
}
while( true );
}
if ( !m_bAllUserEventProcessedSignaled && !HasUserEvents_NoLock() )
{
m_bAllUserEventProcessedSignaled = true;
TriggerAllUserEventsProcessed();
}
return bWasEvent;
}
void SalUserEventList::RemoveEvent( SalFrame* pFrame, void* pData, SalEvent nEvent )
{
SalUserEvent aEvent( pFrame, pData, nEvent );
std::unique_lock aGuard( m_aUserEventsMutex );
auto it = std::find( m_aUserEvents.begin(), m_aUserEvents.end(), aEvent );
if ( it != m_aUserEvents.end() )
{
m_aUserEvents.erase( it );
}
else
{
it = std::find( m_aProcessingUserEvents.begin(), m_aProcessingUserEvents.end(), aEvent );
if ( it != m_aProcessingUserEvents.end() )
{
m_aProcessingUserEvents.erase( it );
}
}
if ( !m_bAllUserEventProcessedSignaled && !HasUserEvents_NoLock() )
{
m_bAllUserEventProcessedSignaled = true;
TriggerAllUserEventsProcessed();
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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