LCOV - code coverage report
Current view: top level - ucb/source/ucp/webdav-neon - NeonLockStore.cxx (source / functions) Hit Total Coverage
Test: commit e02a6cb2c3e2b23b203b422e4e0680877f232636 Lines: 0 98 0.0 %
Date: 2014-04-14 Functions: 0 15 0.0 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2             : /*************************************************************************
       3             :  *
       4             :  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
       5             :  *
       6             :  * Copyright 2000, 2010 Oracle and/or its affiliates.
       7             :  *
       8             :  * OpenOffice.org - a multi-platform office productivity suite
       9             :  *
      10             :  * This file is part of OpenOffice.org.
      11             :  *
      12             :  * OpenOffice.org is free software: you can redistribute it and/or modify
      13             :  * it under the terms of the GNU Lesser General Public License version 3
      14             :  * only, as published by the Free Software Foundation.
      15             :  *
      16             :  * OpenOffice.org is distributed in the hope that it will be useful,
      17             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      18             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      19             :  * GNU Lesser General Public License version 3 for more details
      20             :  * (a copy is included in the LICENSE file that accompanied this code).
      21             :  *
      22             :  * You should have received a copy of the GNU Lesser General Public License
      23             :  * version 3 along with OpenOffice.org.  If not, see
      24             :  * <http://www.openoffice.org/license.html>
      25             :  * for a copy of the LGPLv3 License.
      26             :  *
      27             :  ************************************************************************/
      28             : 
      29             : 
      30             : #include <ne_uri.h>
      31             : #include "rtl/ustring.hxx"
      32             : #include "osl/time.h"
      33             : #include "osl/thread.hxx"
      34             : #include "salhelper/thread.hxx"
      35             : #include "NeonSession.hxx"
      36             : #include "NeonLockStore.hxx"
      37             : 
      38             : using namespace webdav_ucp;
      39             : 
      40             : namespace webdav_ucp {
      41             : 
      42           0 : class TickerThread : public salhelper::Thread
      43             : {
      44             :     bool m_bFinish;
      45             :     NeonLockStore & m_rLockStore;
      46             : 
      47             : public:
      48             : 
      49           0 :     TickerThread( NeonLockStore & rLockStore )
      50             :     : Thread( "NeonTickerThread" ), m_bFinish( false ),
      51           0 :       m_rLockStore( rLockStore ) {}
      52             : 
      53           0 :     void finish() { m_bFinish = true; }
      54             : 
      55             : private:
      56             : 
      57             :     virtual void execute() SAL_OVERRIDE;
      58             : };
      59             : 
      60             : } // namespace webdav_ucp
      61             : 
      62           0 : void TickerThread::execute()
      63             : {
      64             :     OSL_TRACE( "TickerThread: start." );
      65             : 
      66             :     // we have to go through the loop more often to be able to finish ~quickly
      67           0 :     const int nNth = 25;
      68             : 
      69           0 :     int nCount = nNth;
      70           0 :     while ( !m_bFinish )
      71             :     {
      72           0 :         if ( nCount-- <= 0 )
      73             :         {
      74           0 :             m_rLockStore.refreshLocks();
      75           0 :             nCount = nNth;
      76             :         }
      77             : 
      78             :         TimeValue aTV;
      79           0 :         aTV.Seconds = 0;
      80           0 :         aTV.Nanosec = 1000000000 / nNth;
      81           0 :         salhelper::Thread::wait( aTV );
      82             :     }
      83             : 
      84             :     OSL_TRACE( "TickerThread: stop." );
      85           0 : }
      86             : 
      87           0 : NeonLockStore::NeonLockStore()
      88           0 :     : m_pNeonLockStore( ne_lockstore_create() )
      89             : {
      90             :     OSL_ENSURE( m_pNeonLockStore, "Unable to create neon lock store!" );
      91           0 : }
      92             : 
      93           0 : NeonLockStore::~NeonLockStore()
      94             : {
      95           0 :     osl::ResettableMutexGuard aGuard(m_aMutex);
      96           0 :     stopTicker(aGuard);
      97           0 :     aGuard.reset(); // actually no threads should even try to access members now
      98             : 
      99             :     // release active locks, if any.
     100             :     OSL_ENSURE( m_aLockInfoMap.empty(),
     101             :                 "NeonLockStore::~NeonLockStore - Releasing active locks!" );
     102             : 
     103           0 :     LockInfoMap::const_iterator it( m_aLockInfoMap.begin() );
     104           0 :     const LockInfoMap::const_iterator end( m_aLockInfoMap.end() );
     105           0 :     while ( it != end )
     106             :     {
     107           0 :         NeonLock * pLock = (*it).first;
     108           0 :         (*it).second.xSession->UNLOCK( pLock );
     109             : 
     110           0 :         ne_lockstore_remove( m_pNeonLockStore, pLock );
     111           0 :         ne_lock_destroy( pLock );
     112             : 
     113           0 :         ++it;
     114             :     }
     115             : 
     116           0 :     ne_lockstore_destroy( m_pNeonLockStore );
     117           0 : }
     118             : 
     119           0 : void NeonLockStore::startTicker()
     120             : {
     121           0 :     osl::MutexGuard aGuard( m_aMutex );
     122             : 
     123           0 :     if ( !m_pTickerThread.is() )
     124             :     {
     125           0 :         m_pTickerThread = new TickerThread( *this );
     126           0 :         m_pTickerThread->launch();
     127           0 :     }
     128           0 : }
     129             : 
     130           0 : void NeonLockStore::stopTicker(osl::ClearableMutexGuard & rGuard)
     131             : {
     132           0 :     rtl::Reference<TickerThread> pTickerThread;
     133             : 
     134           0 :     if (m_pTickerThread.is())
     135             :     {
     136           0 :         m_pTickerThread->finish(); // needs mutex
     137             :         // the TickerThread may run refreshLocks() at most once after this
     138           0 :         pTickerThread = m_pTickerThread;
     139           0 :         m_pTickerThread.clear();
     140             :     }
     141             : 
     142           0 :     rGuard.clear();
     143             : 
     144           0 :     if (pTickerThread.is())
     145           0 :         pTickerThread->join(); // without m_aMutex locked (to prevent deadlock)
     146           0 : }
     147             : 
     148           0 : void NeonLockStore::registerSession( HttpSession * pHttpSession )
     149             : {
     150           0 :     osl::MutexGuard aGuard( m_aMutex );
     151             : 
     152           0 :     ne_lockstore_register( m_pNeonLockStore, pHttpSession );
     153           0 : }
     154             : 
     155           0 : NeonLock * NeonLockStore::findByUri( OUString const & rUri )
     156             : {
     157           0 :     osl::MutexGuard aGuard( m_aMutex );
     158             : 
     159             :     ne_uri aUri;
     160             :     ne_uri_parse( OUStringToOString(
     161           0 :         rUri, RTL_TEXTENCODING_UTF8 ).getStr(), &aUri );
     162           0 :     return ne_lockstore_findbyuri( m_pNeonLockStore, &aUri );
     163             : }
     164             : 
     165           0 : void NeonLockStore::addLock( NeonLock * pLock,
     166             :                              rtl::Reference< NeonSession > const & xSession,
     167             :                              sal_Int32 nLastChanceToSendRefreshRequest )
     168             : {
     169           0 :     osl::MutexGuard aGuard( m_aMutex );
     170             : 
     171           0 :     ne_lockstore_add( m_pNeonLockStore, pLock );
     172           0 :     m_aLockInfoMap[ pLock ]
     173           0 :         = LockInfo( xSession, nLastChanceToSendRefreshRequest );
     174             : 
     175           0 :     startTicker();
     176           0 : }
     177             : 
     178           0 : void NeonLockStore::updateLock( NeonLock * pLock,
     179             :                                 sal_Int32 nLastChanceToSendRefreshRequest )
     180             : {
     181           0 :     osl::MutexGuard aGuard( m_aMutex );
     182             : 
     183           0 :     LockInfoMap::iterator it( m_aLockInfoMap.find( pLock ) );
     184             :     OSL_ENSURE( it != m_aLockInfoMap.end(),
     185             :                 "NeonLockStore::updateLock: lock not found!" );
     186             : 
     187           0 :     if ( it != m_aLockInfoMap.end() )
     188             :     {
     189           0 :         (*it).second.nLastChanceToSendRefreshRequest
     190           0 :             = nLastChanceToSendRefreshRequest;
     191           0 :     }
     192           0 : }
     193             : 
     194           0 : void NeonLockStore::removeLock( NeonLock * pLock )
     195             : {
     196           0 :     osl::ClearableMutexGuard aGuard( m_aMutex );
     197             : 
     198           0 :     m_aLockInfoMap.erase( pLock );
     199           0 :     ne_lockstore_remove( m_pNeonLockStore, pLock );
     200             : 
     201           0 :     if ( m_aLockInfoMap.empty() )
     202           0 :         stopTicker(aGuard);
     203           0 : }
     204             : 
     205           0 : void NeonLockStore::refreshLocks()
     206             : {
     207           0 :     osl::MutexGuard aGuard( m_aMutex );
     208             : 
     209           0 :     LockInfoMap::iterator it( m_aLockInfoMap.begin() );
     210           0 :     const LockInfoMap::const_iterator end( m_aLockInfoMap.end() );
     211           0 :     while ( it != end )
     212             :     {
     213           0 :         LockInfo & rInfo = (*it).second;
     214           0 :         if ( rInfo.nLastChanceToSendRefreshRequest != -1 )
     215             :         {
     216             :             // 30 seconds or less remaining until lock expires?
     217             :             TimeValue t1;
     218           0 :             osl_getSystemTime( &t1 );
     219           0 :             if ( rInfo.nLastChanceToSendRefreshRequest - 30
     220           0 :                      <= sal_Int32( t1.Seconds ) )
     221             :             {
     222             :                 // refresh the lock.
     223           0 :                 sal_Int32 nlastChanceToSendRefreshRequest = -1;
     224           0 :                 if ( rInfo.xSession->LOCK(
     225           0 :                          (*it).first,
     226           0 :                          /* out param */ nlastChanceToSendRefreshRequest ) )
     227             :                 {
     228             :                     rInfo.nLastChanceToSendRefreshRequest
     229           0 :                         = nlastChanceToSendRefreshRequest;
     230             :                 }
     231             :                 else
     232             :                 {
     233             :                     // refresh failed. stop auto-refresh.
     234           0 :                     rInfo.nLastChanceToSendRefreshRequest = -1;
     235             :                 }
     236             :             }
     237             :         }
     238           0 :         ++it;
     239           0 :     }
     240           0 : }
     241             : 
     242             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

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