Version 5.2.6.1, tag libreoffice-5.2.6.1
[LibreOffice.git] / pyuno / source / module / pyuno_gc.cxx
blobd65be77402fa91cfefda5baf9adbc3cfe0792724
1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 /*
3 * This file is part of the LibreOffice project.
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/.
9 * This file incorporates work covered by the following license notice:
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 .
20 #include "pyuno_impl.hxx"
22 #include "sal/config.h"
24 #include "rtl/ref.hxx"
25 #include "salhelper/thread.hxx"
27 namespace pyuno
30 bool g_destructorsOfStaticObjectsHaveBeenCalled;
31 class StaticDestructorGuard
33 public:
34 ~StaticDestructorGuard()
36 g_destructorsOfStaticObjectsHaveBeenCalled = true;
39 StaticDestructorGuard guard;
41 static bool isAfterUnloadOrPy_Finalize()
43 return g_destructorsOfStaticObjectsHaveBeenCalled ||
44 !Py_IsInitialized();
47 class GCThread: public salhelper::Thread {
48 public:
49 GCThread( PyInterpreterState *interpreter, PyObject * object );
51 private:
52 virtual ~GCThread() {}
54 virtual void execute() override;
56 PyObject *mPyObject;
57 PyInterpreterState *mPyInterpreter;
60 GCThread::GCThread( PyInterpreterState *interpreter, PyObject * object ) :
61 Thread( "pyunoGCThread" ), mPyObject( object ),
62 mPyInterpreter( interpreter )
65 void GCThread::execute()
67 // otherwise we crash here, when main has been left already
68 if( isAfterUnloadOrPy_Finalize() )
69 return;
70 try
72 PyThreadAttach g( mPyInterpreter );
74 Runtime runtime;
76 // remove the reference from the pythonobject2adapter map
77 PyRef2Adapter::iterator ii =
78 runtime.getImpl()->cargo->mappedObjects.find( mPyObject );
79 if( ii != runtime.getImpl()->cargo->mappedObjects.end() )
81 runtime.getImpl()->cargo->mappedObjects.erase( ii );
84 Py_XDECREF( mPyObject );
87 catch( const css::uno::RuntimeException & e )
89 OString msg;
90 msg = OUStringToOString( e.Message, RTL_TEXTENCODING_ASCII_US );
91 fprintf( stderr, "Leaking python objects bridged to UNO for reason %s\n",msg.getStr());
95 void decreaseRefCount( PyInterpreterState *interpreter, PyObject *object )
97 // otherwise we crash in the last after main ...
98 if( isAfterUnloadOrPy_Finalize() )
99 return;
101 // delegate to a new thread, because there does not seem
102 // to be a method, which tells, whether the global
103 // interpreter lock is held or not
104 // TODO: Look for a more efficient solution
105 rtl::Reference< GCThread >(new GCThread(interpreter, object))->launch();
106 //TODO: a protocol is missing how to join with the launched thread
107 // before exit(3), to ensure the thread is no longer relying on any
108 // infrastructure while that infrastructure is being shut down in
109 // atexit handlers
114 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */