cppu/source/threadpool/thread.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include <stdio.h>
  21 #include <osl/diagnose.h>
  22 #include <uno/threadpool.h>
  23
  24 #include <com/sun/star/lang/DisposedException.hpp>
  25 #include <com/sun/star/uno/Reference.hxx>
  26 #include <com/sun/star/uno/XInterface.hpp>
  27 #include <rtl/ustring.h>
  28 #include <rtl/ustring.hxx>
  29
  30 #include "thread.hxx"
  31 #include "jobqueue.hxx"
  32 #include "threadpool.hxx"
  33
  34 using namespace osl;
  35
  36 namespace cppu_threadpool {
  37
  38 // ----------------------------------------------------------------------------------
  39     ThreadAdmin::ThreadAdmin(): m_disposed(false) {}
  40
  41     ThreadAdmin::~ThreadAdmin()
  42     {
  43 #if OSL_DEBUG_LEVEL > 1
  44         if( m_lst.size() )
  45         {
  46             fprintf( stderr, "%lu Threads left\n" , static_cast<unsigned long>(m_lst.size()) );
  47         }
  48 #endif
  49     }
  50
  51     void ThreadAdmin::add( rtl::Reference< ORequestThread > const & p )
  52     {
  53         MutexGuard aGuard( m_mutex );
  54         if( m_disposed )
  55         {
  56             throw css::lang::DisposedException(
  57                 rtl::OUString(
  58                     RTL_CONSTASCII_USTRINGPARAM(
  59                         "cppu_threadpool::ORequestThread created after"
  60                         " cppu_threadpool::ThreadAdmin has been disposed")),
  61                 css::uno::Reference< css::uno::XInterface >());
  62         }
  63         m_lst.push_back( p );
  64     }
  65
  66     void ThreadAdmin::remove_locked( rtl::Reference< ORequestThread > const & p )
  67     {
  68         ::std::list< rtl::Reference< ORequestThread > >::iterator ii = ::std::find( m_lst.begin(), m_lst.end(), p );
  69         if( ii != m_lst.end() )
  70         {
  71             m_lst.erase( ii );
  72         }
  73     }
  74
  75     void ThreadAdmin::remove( rtl::Reference< ORequestThread > const & p )
  76     {
  77         MutexGuard aGuard( m_mutex );
  78         remove_locked( p );
  79     }
  80
  81     void ThreadAdmin::join()
  82     {
  83         {
  84             MutexGuard aGuard( m_mutex );
  85             m_disposed = true;
  86         }
  87         for (;;)
  88         {
  89             rtl::Reference< ORequestThread > pCurrent;
  90             {
  91                 MutexGuard aGuard( m_mutex );
  92                 if( m_lst.empty() )
  93                 {
  94                     break;
  95                 }
  96                 pCurrent = m_lst.front();
  97                 m_lst.pop_front();
  98             }
  99             pCurrent->join();
 100         }
 101     }
 102
 103 // ----------------------------------------------------------------------------------
 104     ORequestThread::ORequestThread( ThreadPoolHolder const &aThreadPool,
 105                                     JobQueue *pQueue,
 106                                     const ByteSequence &aThreadId,
 107                                     sal_Bool bAsynchron )
 108         : m_aThreadPool( aThreadPool )
 109         , m_pQueue( pQueue )
 110         , m_aThreadId( aThreadId )
 111         , m_bAsynchron( bAsynchron )
 112     {}
 113
 114     ORequestThread::~ORequestThread() {}
 115
 116     void ORequestThread::setTask( JobQueue *pQueue,
 117                                   const ByteSequence &aThreadId,
 118                                   sal_Bool bAsynchron )
 119     {
 120         m_pQueue = pQueue;
 121         m_aThreadId = aThreadId;
 122         m_bAsynchron = bAsynchron;
 123     }
 124
 125     void ORequestThread::launch()
 126     {
 127         // Assumption is that osl::Thread::create returns normally with a true
 128         // return value iff it causes osl::Thread::run to start executing:
 129         acquire();
 130         ThreadAdmin & rThreadAdmin = m_aThreadPool->getThreadAdmin();
 131         osl::ClearableMutexGuard g(rThreadAdmin.m_mutex);
 132         rThreadAdmin.add( this );
 133         try {
 134             if (!create()) {
 135                 throw std::runtime_error("osl::Thread::create failed");
 136             }
 137         } catch (...) {
 138             rThreadAdmin.remove_locked( this );
 139             g.clear();
 140             release();
 141             throw;
 142         }
 143     }
 144
 145     void ORequestThread::onTerminated()
 146     {
 147         m_aThreadPool->getThreadAdmin().remove( this );
 148         release();
 149     }
 150
 151     void ORequestThread::run()
 152     {
 153         try
 154         {
 155             while ( m_pQueue )
 156             {
 157                 if( ! m_bAsynchron )
 158                 {
 159                     if ( !uno_bindIdToCurrentThread( m_aThreadId.getHandle() ) )
 160                     {
 161                         OSL_ASSERT( false );
 162                     }
 163                 }
 164
 165                 while( ! m_pQueue->isEmpty() )
 166                 {
 167                     // Note : Oneways should not get a disposable disposeid,
 168                     //        It does not make sense to dispose a call in this state.
 169                     //        That's way we put it an disposeid, that can't be used otherwise.
 170                     m_pQueue->enter(
 171                         sal::static_int_cast< sal_Int64 >(
 172                             reinterpret_cast< sal_IntPtr >(this)),
 173                         sal_True );
 174
 175                     if( m_pQueue->isEmpty() )
 176                     {
 177                         m_aThreadPool->revokeQueue( m_aThreadId , m_bAsynchron );
 178                         // Note : revokeQueue might have failed because m_pQueue.isEmpty()
 179                         //        may be false (race).
 180                     }
 181                 }
 182
 183                 delete m_pQueue;
 184                 m_pQueue = 0;
 185
 186                 if( ! m_bAsynchron )
 187                 {
 188                     uno_releaseIdFromCurrentThread();
 189                 }
 190
 191                 m_aThreadPool->waitInPool( this );
 192             }
 193         }
 194         catch (...)
 195         {
 196             // Work around the problem that onTerminated is not called if run
 197             // throws an exception:
 198             onTerminated();
 199             throw;
 200         }
 201     }
 202 }
 203
 204 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */