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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 <rtl/ustring.hxx>
#include <osl/time.h>
#include <osl/thread.hxx>
#include "SerfSession.hxx"
#include "SerfLockStore.hxx"
using namespace http_dav_ucp;
namespace http_dav_ucp {
class TickerThread : public osl::Thread
{
bool m_bFinish;
SerfLockStore & m_rLockStore;
public:
explicit TickerThread( SerfLockStore & rLockStore )
: osl::Thread(), m_bFinish( false ), m_rLockStore( rLockStore ) {}
void finish() { m_bFinish = true; }
protected:
virtual void SAL_CALL run() override;
};
} // namespace http_dav_ucp
void TickerThread::run()
{
osl_setThreadName("http_dav_ucp::TickerThread");
SAL_INFO("ucb.ucp.webdav", "TickerThread: start." );
// we have to go through the loop more often to be able to finish ~quickly
const int nNth = 25;
int nCount = nNth;
while ( !m_bFinish )
{
if ( nCount-- <= 0 )
{
m_rLockStore.refreshLocks();
nCount = nNth;
}
TimeValue aTV;
aTV.Seconds = 0;
aTV.Nanosec = 1000000000 / nNth;
wait( aTV );
}
SAL_INFO("ucb.ucp.webdav", "TickerThread: stop." );
}
SerfLockStore::SerfLockStore()
: m_pTickerThread( 0 )
, m_bFinishing( false )
{
}
SerfLockStore::~SerfLockStore()
{
stopTicker();
m_bFinishing = true;
// release active locks, if any.
SAL_WARN_IF( !m_aLockInfoMap.empty(), "ucb.ucp.webdav",
"SerfLockStore::~SerfLockStore - Releasing active locks!" );
LockInfoMap::const_iterator it( m_aLockInfoMap.begin() );
const LockInfoMap::const_iterator end( m_aLockInfoMap.end() );
while ( it != end )
{
(*it).second.m_xSession->UNLOCK( (*it).first );
++it;
}
}
bool SerfLockStore::finishing() const
{
return m_bFinishing;
}
void SerfLockStore::startTicker()
{
osl::MutexGuard aGuard( m_aMutex );
if ( !m_pTickerThread )
{
m_pTickerThread = new TickerThread( *this );
m_pTickerThread->create();
}
}
void SerfLockStore::stopTicker()
{
osl::MutexGuard aGuard( m_aMutex );
if ( m_pTickerThread )
{
m_pTickerThread->finish();
m_pTickerThread->join();
delete m_pTickerThread;
m_pTickerThread = 0;
}
}
OUString SerfLockStore::getLockToken( const OUString& rLock )
{
osl::MutexGuard aGuard( m_aMutex );
LockInfoMap::const_iterator it( m_aLockInfoMap.find( rLock ) );
if ( it != m_aLockInfoMap.end() )
return (*it).second.m_sToken;
SAL_WARN("ucb.ucp.webdav", "SerfLockStore::getLockToken: lock not found!" );
return OUString();
}
void SerfLockStore::addLock( const OUString& rLock,
const OUString& sToken,
rtl::Reference< SerfSession > const & xSession,
sal_Int32 nLastChanceToSendRefreshRequest )
{
osl::MutexGuard aGuard( m_aMutex );
m_aLockInfoMap[ rLock ]
= LockInfo( sToken, xSession, nLastChanceToSendRefreshRequest );
startTicker();
}
void SerfLockStore::updateLock( const OUString& rLock,
sal_Int32 nLastChanceToSendRefreshRequest )
{
osl::MutexGuard aGuard( m_aMutex );
LockInfoMap::iterator it( m_aLockInfoMap.find( rLock ) );
SAL_WARN_IF( it == m_aLockInfoMap.end(), "ucb.ucp.webdav",
"SerfLockStore::updateLock: lock not found!" );
if ( it != m_aLockInfoMap.end() )
{
(*it).second.m_nLastChanceToSendRefreshRequest
= nLastChanceToSendRefreshRequest;
}
}
void SerfLockStore::removeLock( const OUString& rLock )
{
osl::MutexGuard aGuard( m_aMutex );
m_aLockInfoMap.erase( rLock );
if ( m_aLockInfoMap.empty() )
stopTicker();
}
void SerfLockStore::refreshLocks()
{
osl::MutexGuard aGuard( m_aMutex );
LockInfoMap::iterator it( m_aLockInfoMap.begin() );
const LockInfoMap::const_iterator end( m_aLockInfoMap.end() );
while ( it != end )
{
LockInfo & rInfo = (*it).second;
if ( rInfo.m_nLastChanceToSendRefreshRequest != -1 )
{
// 30 seconds or less remaining until lock expires?
TimeValue t1;
osl_getSystemTime( &t1 );
if ( rInfo.m_nLastChanceToSendRefreshRequest - 30
<= sal_Int32( t1.Seconds ) )
{
// refresh the lock.
sal_Int32 nlastChanceToSendRefreshRequest = -1;
if ( rInfo.m_xSession->LOCK(
(*it).first, &nlastChanceToSendRefreshRequest ) )
{
rInfo.m_nLastChanceToSendRefreshRequest
= nlastChanceToSendRefreshRequest;
}
else
{
// refresh failed. stop auto-refresh.
rInfo.m_nLastChanceToSendRefreshRequest = -1;
}
}
}
++it;
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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