Bug Summary

File:cppu/source/threadpool/thread.cxx
Location:line 136, column 38
Description:Called C++ object pointer is null

Annotated Source Code

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
34namespace {
35
36namespace css = com::sun::star;
37
38}
39
40using namespace osl;
41
42namespace cppu_threadpool {
43
44// ----------------------------------------------------------------------------------
45 ThreadAdmin::ThreadAdmin(): m_disposed(false) {}
46
47 ThreadAdmin::~ThreadAdmin()
48 {
49#if OSL_DEBUG_LEVEL1 > 1
50 if( m_lst.size() )
51 {
52 fprintf( stderrstderr, "%lu Threads left\n" , static_cast<unsigned long>(m_lst.size()) );
53 }
54#endif
55 }
56
57 void ThreadAdmin::add( rtl::Reference< ORequestThread > const & p )
58 {
59 MutexGuard aGuard( m_mutex );
60 if( m_disposed )
61 {
62 throw css::lang::DisposedException(
63 rtl::OUString(
64 RTL_CONSTASCII_USTRINGPARAM((&("cppu_threadpool::ORequestThread created after" " cppu_threadpool::ThreadAdmin has been disposed"
)[0]), ((sal_Int32)((sizeof ("cppu_threadpool::ORequestThread created after"
" cppu_threadpool::ThreadAdmin has been disposed") / sizeof (
("cppu_threadpool::ORequestThread created after" " cppu_threadpool::ThreadAdmin has been disposed"
)[0]))-1)), (((rtl_TextEncoding) 11))
65 "cppu_threadpool::ORequestThread created after"(&("cppu_threadpool::ORequestThread created after" " cppu_threadpool::ThreadAdmin has been disposed"
)[0]), ((sal_Int32)((sizeof ("cppu_threadpool::ORequestThread created after"
" cppu_threadpool::ThreadAdmin has been disposed") / sizeof (
("cppu_threadpool::ORequestThread created after" " cppu_threadpool::ThreadAdmin has been disposed"
)[0]))-1)), (((rtl_TextEncoding) 11))
66 " cppu_threadpool::ThreadAdmin has been disposed")(&("cppu_threadpool::ORequestThread created after" " cppu_threadpool::ThreadAdmin has been disposed"
)[0]), ((sal_Int32)((sizeof ("cppu_threadpool::ORequestThread created after"
" cppu_threadpool::ThreadAdmin has been disposed") / sizeof (
("cppu_threadpool::ORequestThread created after" " cppu_threadpool::ThreadAdmin has been disposed"
)[0]))-1)), (((rtl_TextEncoding) 11))),
67 css::uno::Reference< css::uno::XInterface >());
68 }
69 m_lst.push_back( p );
70 }
71
72 void ThreadAdmin::remove_locked( rtl::Reference< ORequestThread > const & p )
73 {
74 ::std::list< rtl::Reference< ORequestThread > >::iterator ii = ::std::find( m_lst.begin(), m_lst.end(), p );
75 if( ii != m_lst.end() )
76 {
77 m_lst.erase( ii );
78 }
79 }
80
81 void ThreadAdmin::remove( rtl::Reference< ORequestThread > const & p )
82 {
83 MutexGuard aGuard( m_mutex );
84 remove_locked( p );
85 }
86
87 void ThreadAdmin::join()
88 {
89 {
90 MutexGuard aGuard( m_mutex );
91 m_disposed = true;
92 }
93 for (;;)
94 {
95 rtl::Reference< ORequestThread > pCurrent;
96 {
97 MutexGuard aGuard( m_mutex );
98 if( m_lst.empty() )
99 {
100 break;
101 }
102 pCurrent = m_lst.front();
103 m_lst.pop_front();
104 }
105 pCurrent->join();
106 }
107 }
108
109// ----------------------------------------------------------------------------------
110 ORequestThread::ORequestThread( ThreadPoolHolder const &aThreadPool,
111 JobQueue *pQueue,
112 const ByteSequence &aThreadId,
113 sal_Bool bAsynchron )
114 : m_aThreadPool( aThreadPool )
115 , m_pQueue( pQueue )
116 , m_aThreadId( aThreadId )
117 , m_bAsynchron( bAsynchron )
118 {}
119
120 ORequestThread::~ORequestThread() {}
121
122 void ORequestThread::setTask( JobQueue *pQueue,
123 const ByteSequence &aThreadId,
124 sal_Bool bAsynchron )
125 {
126 m_pQueue = pQueue;
127 m_aThreadId = aThreadId;
128 m_bAsynchron = bAsynchron;
129 }
130
131 void ORequestThread::launch()
132 {
133 // Assumption is that osl::Thread::create returns normally with a true
134 // return value iff it causes osl::Thread::run to start executing:
135 acquire();
136 ThreadAdmin & rThreadAdmin = m_aThreadPool->getThreadAdmin();
Called C++ object pointer is null
137 osl::ClearableMutexGuard g(rThreadAdmin.m_mutex);
138 rThreadAdmin.add( this );
139 try {
140 if (!create()) {
141 throw std::runtime_error("osl::Thread::create failed");
142 }
143 } catch (...) {
144 rThreadAdmin.remove_locked( this );
145 g.clear();
146 release();
147 throw;
148 }
149 }
150
151 void ORequestThread::onTerminated()
152 {
153 m_aThreadPool->getThreadAdmin().remove( this );
154 release();
155 }
156
157 void ORequestThread::run()
158 {
159 try
160 {
161 while ( m_pQueue )
162 {
163 if( ! m_bAsynchron )
164 {
165 if ( !uno_bindIdToCurrentThread( m_aThreadId.getHandle() ) )
166 {
167 OSL_ASSERT( false )do { if (true && (!(false))) { sal_detail_logFormat((
SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"), ("/usr/local/src/libreoffice/cppu/source/threadpool/thread.cxx"
":" "167" ": "), "OSL_ASSERT: %s", "false"); } } while (false
);
168 }
169 }
170
171 while( ! m_pQueue->isEmpty() )
172 {
173 // Note : Oneways should not get a disposable disposeid,
174 // It does not make sense to dispose a call in this state.
175 // That's way we put it an disposeid, that can't be used otherwise.
176 m_pQueue->enter(
177 sal::static_int_cast< sal_Int64 >(
178 reinterpret_cast< sal_IntPtr >(this)),
179 sal_True((sal_Bool)1) );
180
181 if( m_pQueue->isEmpty() )
182 {
183 m_aThreadPool->revokeQueue( m_aThreadId , m_bAsynchron );
184 // Note : revokeQueue might have failed because m_pQueue.isEmpty()
185 // may be false (race).
186 }
187 }
188
189 delete m_pQueue;
190 m_pQueue = 0;
191
192 if( ! m_bAsynchron )
193 {
194 uno_releaseIdFromCurrentThread();
195 }
196
197 m_aThreadPool->waitInPool( this );
198 }
199 }
200 catch (...)
201 {
202 // Work around the problem that onTerminated is not called if run
203 // throws an exception:
204 onTerminated();
205 throw;
206 }
207 }
208}
209
210/* vim:set shiftwidth=4 softtabstop=4 expandtab: */