Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 198 insertions, 0 deletions

diff --git a/cppu/source/threadpool/thread.cxx b/cppu/source/threadpool/thread.cxx
new file mode 100644
index 000000000..56e52838b
--- /dev/null
+++ b/cppu/source/threadpool/thread.cxx
@@ -0,0 +1,198 @@
+/* -*- 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 <sal/config.h>
+
+#include <algorithm>
+#include <cstdlib>
+#include <osl/diagnose.h>
+#include <uno/threadpool.h>
+#include <sal/log.hxx>
+#include <utility>
+
+#include "thread.hxx"
+#include "jobqueue.hxx"
+#include "threadpool.hxx"
+
+using namespace osl;
+using namespace rtl;
+
+namespace cppu_threadpool {
+
+
+    ThreadAdmin::ThreadAdmin(): m_disposed(false) {}
+
+    ThreadAdmin::~ThreadAdmin()
+    {
+        SAL_WARN_IF(m_deque.size(), "cppu.threadpool", m_deque.size() << "Threads left");
+    }
+
+    bool ThreadAdmin::add_locked( rtl::Reference< ORequestThread > const & p )
+    {
+        if( m_disposed )
+        {
+            return false;
+        }
+        m_deque.push_back( p );
+        return true;
+    }
+
+    void ThreadAdmin::remove_locked( rtl::Reference< ORequestThread > const & p )
+    {
+        m_deque.erase(std::find( m_deque.begin(), m_deque.end(), p ), m_deque.end());
+    }
+
+    void ThreadAdmin::remove( rtl::Reference< ORequestThread > const & p )
+    {
+        std::scoped_lock aGuard( m_mutex );
+        remove_locked( p );
+    }
+
+    void ThreadAdmin::join()
+    {
+        {
+            std::scoped_lock aGuard( m_mutex );
+            m_disposed = true;
+        }
+        for (;;)
+        {
+            rtl::Reference< ORequestThread > pCurrent;
+            {
+                std::scoped_lock aGuard( m_mutex );
+                if( m_deque.empty() )
+                {
+                    break;
+                }
+                pCurrent = m_deque.front();
+                m_deque.pop_front();
+            }
+            if (pCurrent->getIdentifier()
+                != osl::Thread::getCurrentIdentifier())
+            {
+                pCurrent->join();
+            }
+        }
+    }
+
+
+    ORequestThread::ORequestThread( ThreadPoolHolder aThreadPool,
+                                    JobQueue *pQueue,
+                                    ByteSequence aThreadId,
+                                    bool bAsynchron )
+        : m_aThreadPool(std::move( aThreadPool ))
+        , m_pQueue( pQueue )
+        , m_aThreadId(std::move( aThreadId ))
+        , m_bAsynchron( bAsynchron )
+    {}
+
+    ORequestThread::~ORequestThread() {}
+
+    void ORequestThread::setTask( JobQueue *pQueue,
+                                  const ByteSequence &aThreadId,
+                                  bool bAsynchron )
+    {
+        m_pQueue = pQueue;
+        m_aThreadId = aThreadId;
+        m_bAsynchron = bAsynchron;
+    }
+
+    bool ORequestThread::launch()
+    {
+        // Assumption is that osl::Thread::create returns normally with a true
+        // return value iff it causes osl::Thread::run to start executing:
+        acquire();
+        ThreadAdmin & rThreadAdmin = m_aThreadPool->getThreadAdmin();
+        std::unique_lock g(rThreadAdmin.m_mutex);
+        if (!rThreadAdmin.add_locked( this )) {
+            return false;
+        }
+        try {
+            if (!create()) {
+                std::abort();
+            }
+        } catch (...) {
+            rThreadAdmin.remove_locked( this );
+            g.release();
+            release();
+            throw;
+        }
+        return true;
+    }
+
+    void ORequestThread::onTerminated()
+    {
+        m_aThreadPool->getThreadAdmin().remove( this );
+        release();
+    }
+
+    void ORequestThread::run()
+    {
+        osl_setThreadName("cppu_threadpool::ORequestThread");
+
+        try
+        {
+            while ( m_pQueue )
+            {
+                if( ! m_bAsynchron )
+                {
+                    if ( !uno_bindIdToCurrentThread( m_aThreadId.getHandle() ) )
+                    {
+                        OSL_ASSERT( false );
+                    }
+                }
+
+                while( ! m_pQueue->isEmpty() )
+                {
+                    // Note : Oneways should not get a disposable disposeid,
+                    //        It does not make sense to dispose a call in this state.
+                    //        That's way we put it a disposeid, that can't be used otherwise.
+                    m_pQueue->enter(
+                        this,
+                        true );
+
+                    if( m_pQueue->isEmpty() )
+                    {
+                        m_aThreadPool->revokeQueue( m_aThreadId , m_bAsynchron );
+                        // Note : revokeQueue might have failed because m_pQueue.isEmpty()
+                        //        may be false (race).
+                    }
+                }
+
+                delete m_pQueue;
+                m_pQueue = nullptr;
+
+                if( ! m_bAsynchron )
+                {
+                    uno_releaseIdFromCurrentThread();
+                }
+
+                m_aThreadPool->waitInPool( this );
+            }
+        }
+        catch (...)
+        {
+            // Work around the problem that onTerminated is not called if run
+            // throws an exception:
+            onTerminated();
+            throw;
+        }
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */