132 lines
3.7 KiB
C++
132 lines
3.7 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include "pyuno_impl.hxx"
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#include <sal/config.h>
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#include <rtl/ref.hxx>
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#include <salhelper/thread.hxx>
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namespace pyuno
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{
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static bool g_destructorsOfStaticObjectsHaveBeenCalled;
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namespace {
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class StaticDestructorGuard
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{
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public:
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~StaticDestructorGuard()
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{
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g_destructorsOfStaticObjectsHaveBeenCalled = true;
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}
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};
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}
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static StaticDestructorGuard guard;
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static bool isAfterUnloadOrPy_Finalize()
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{
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return g_destructorsOfStaticObjectsHaveBeenCalled ||
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!Py_IsInitialized();
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}
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namespace {
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class GCThread: public salhelper::Thread {
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public:
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GCThread( PyInterpreterState *interpreter, PyObject * object );
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private:
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virtual ~GCThread() override {}
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virtual void execute() override;
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PyObject *mPyObject;
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PyInterpreterState *mPyInterpreter;
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};
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}
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GCThread::GCThread( PyInterpreterState *interpreter, PyObject * object ) :
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Thread( "pyunoGCThread" ), mPyObject( object ),
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mPyInterpreter( interpreter )
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{}
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void GCThread::execute()
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{
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// otherwise we crash here, when main has been left already
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if( isAfterUnloadOrPy_Finalize() )
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return;
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try
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{
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PyThreadAttach g( mPyInterpreter );
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{
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Runtime runtime;
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// remove the reference from the pythonobject2adapter map
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PyRef2Adapter::iterator ii =
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runtime.getImpl()->cargo->mappedObjects.find( mPyObject );
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if( ii != runtime.getImpl()->cargo->mappedObjects.end() )
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{
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runtime.getImpl()->cargo->mappedObjects.erase( ii );
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}
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Py_XDECREF( mPyObject );
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}
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}
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catch( const css::uno::RuntimeException & e )
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{
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OString msg = OUStringToOString( e.Message, RTL_TEXTENCODING_ASCII_US );
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fprintf( stderr, "Leaking python objects bridged to UNO for reason %s\n",msg.getStr());
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}
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}
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void decreaseRefCount( PyInterpreterState *interpreter, PyObject *object )
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{
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// otherwise we crash in the last after main ...
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if( isAfterUnloadOrPy_Finalize() )
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return;
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// delegate to a new thread, because there does not seem
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// to be a method, which tells, whether the global
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// interpreter lock is held or not
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// TODO: Look for a more efficient solution
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try
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{
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rtl::Reference< GCThread >(new GCThread(interpreter, object))->launch();
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//TODO: a protocol is missing how to join with the launched thread
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// before exit(3), to ensure the thread is no longer relying on any
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// infrastructure while that infrastructure is being shut down in
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// atexit handlers
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}
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catch (std::runtime_error&)
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{
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// tdf#146621: Thread creation will fail on Windows with ERROR_ACCESS_DENIED
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// when called at ExitProcess time; unhandled exception would hang the process
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abort();
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}
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}
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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