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/* -*- 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 "pyuno_impl.hxx"
#include <sal/config.h>
#include <rtl/ref.hxx>
#include <salhelper/thread.hxx>
namespace pyuno
{
static bool g_destructorsOfStaticObjectsHaveBeenCalled;
namespace {
class StaticDestructorGuard
{
public:
~StaticDestructorGuard()
{
g_destructorsOfStaticObjectsHaveBeenCalled = true;
}
};
}
static StaticDestructorGuard guard;
static bool isAfterUnloadOrPy_Finalize()
{
return g_destructorsOfStaticObjectsHaveBeenCalled ||
!Py_IsInitialized();
}
namespace {
class GCThread: public salhelper::Thread {
public:
GCThread( PyInterpreterState *interpreter, PyObject * object );
private:
virtual ~GCThread() override {}
virtual void execute() override;
PyObject *mPyObject;
PyInterpreterState *mPyInterpreter;
};
}
GCThread::GCThread( PyInterpreterState *interpreter, PyObject * object ) :
Thread( "pyunoGCThread" ), mPyObject( object ),
mPyInterpreter( interpreter )
{}
void GCThread::execute()
{
// otherwise we crash here, when main has been left already
if( isAfterUnloadOrPy_Finalize() )
return;
try
{
PyThreadAttach g( mPyInterpreter );
{
Runtime runtime;
// remove the reference from the pythonobject2adapter map
PyRef2Adapter::iterator ii =
runtime.getImpl()->cargo->mappedObjects.find( mPyObject );
if( ii != runtime.getImpl()->cargo->mappedObjects.end() )
{
runtime.getImpl()->cargo->mappedObjects.erase( ii );
}
Py_XDECREF( mPyObject );
}
}
catch( const css::uno::RuntimeException & e )
{
OString msg = OUStringToOString( e.Message, RTL_TEXTENCODING_ASCII_US );
fprintf( stderr, "Leaking python objects bridged to UNO for reason %s\n",msg.getStr());
}
}
void decreaseRefCount( PyInterpreterState *interpreter, PyObject *object )
{
// otherwise we crash in the last after main ...
if( isAfterUnloadOrPy_Finalize() )
return;
// delegate to a new thread, because there does not seem
// to be a method, which tells, whether the global
// interpreter lock is held or not
// TODO: Look for a more efficient solution
try
{
rtl::Reference< GCThread >(new GCThread(interpreter, object))->launch();
//TODO: a protocol is missing how to join with the launched thread
// before exit(3), to ensure the thread is no longer relying on any
// infrastructure while that infrastructure is being shut down in
// atexit handlers
}
catch (std::runtime_error&)
{
// tdf#146621: Thread creation will fail on Windows with ERROR_ACCESS_DENIED
// when called at ExitProcess time; unhandled exception would hang the process
abort();
}
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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