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       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 "pyuno_impl.hxx"
      21                 :            : 
      22                 :            : #include "sal/config.h"
      23                 :            : 
      24                 :            : #include "rtl/ref.hxx"
      25                 :            : #include "salhelper/thread.hxx"
      26                 :            : 
      27                 :            : namespace pyuno
      28                 :            : {
      29                 :            : 
      30                 :            : bool g_destructorsOfStaticObjectsHaveBeenCalled;
      31                 :            : class StaticDestructorGuard
      32                 :            : {
      33                 :            : public:
      34                 :        112 :     ~StaticDestructorGuard()
      35                 :            :     {
      36                 :        112 :         g_destructorsOfStaticObjectsHaveBeenCalled = true;
      37                 :        112 :     }
      38                 :            : };
      39                 :        112 : StaticDestructorGuard guard;
      40                 :            : 
      41                 :        712 : static bool isAfterUnloadOrPy_Finalize()
      42                 :            : {
      43                 :            :     return g_destructorsOfStaticObjectsHaveBeenCalled ||
      44 [ +  - ][ -  + ]:        712 :         !Py_IsInitialized();
      45                 :            : }
      46                 :            : 
      47                 :            : class GCThread: public salhelper::Thread {
      48                 :            : public:
      49                 :            :     GCThread( PyInterpreterState *interpreter, PyObject * object );
      50                 :            : 
      51                 :            : private:
      52         [ -  + ]:        712 :     virtual ~GCThread() {}
      53                 :            : 
      54                 :            :     virtual void execute();
      55                 :            : 
      56                 :            :     PyObject *mPyObject;
      57                 :            :     PyInterpreterState *mPyInterpreter;
      58                 :            : };
      59                 :            : 
      60                 :        356 : GCThread::GCThread( PyInterpreterState *interpreter, PyObject * object ) :
      61                 :            :     Thread( "pyunoGCThread" ), mPyObject( object ),
      62                 :        356 :     mPyInterpreter( interpreter )
      63                 :        356 : {}
      64                 :            : 
      65                 :        356 : void GCThread::execute()
      66                 :            : {
      67                 :            :     //  otherwise we crash here, when main has been left already
      68         [ -  + ]:        356 :     if( isAfterUnloadOrPy_Finalize() )
      69                 :        356 :         return;
      70                 :            :     try
      71                 :            :     {
      72         [ +  - ]:        356 :         PyThreadAttach g( (PyInterpreterState*)mPyInterpreter );
      73                 :            :         {
      74         [ +  - ]:        356 :             Runtime runtime;
      75                 :            : 
      76                 :            :             // remove the reference from the pythonobject2adapter map
      77                 :            :             PyRef2Adapter::iterator ii =
      78 [ +  - ][ +  - ]:        356 :                 runtime.getImpl()->cargo->mappedObjects.find( mPyObject );
      79 [ +  - ][ +  - ]:        356 :             if( ii != runtime.getImpl()->cargo->mappedObjects.end() )
      80                 :            :             {
      81         [ +  - ]:        356 :                 runtime.getImpl()->cargo->mappedObjects.erase( ii );
      82                 :            :             }
      83                 :            : 
      84 [ +  - ][ +  - ]:        356 :             Py_XDECREF( mPyObject );
         [ +  - ][ +  - ]
      85         [ +  - ]:        356 :         }
      86                 :            :     }
      87         [ #  # ]:          0 :     catch( const com::sun::star::uno::RuntimeException & e )
      88                 :            :     {
      89                 :          0 :         rtl::OString msg;
      90         [ #  # ]:          0 :         msg = rtl::OUStringToOString( e.Message, RTL_TEXTENCODING_ASCII_US );
      91         [ #  # ]:          0 :         fprintf( stderr, "Leaking python objects bridged to UNO for reason %s\n",msg.getStr());
      92                 :            :     }
      93                 :            : }
      94                 :            : 
      95                 :        356 : void decreaseRefCount( PyInterpreterState *interpreter, PyObject *object )
      96                 :            : {
      97                 :            :     //  otherwise we crash in the last after main ...
      98         [ -  + ]:        356 :     if( isAfterUnloadOrPy_Finalize() )
      99                 :        356 :         return;
     100                 :            : 
     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 [ +  - ][ +  - ]:        356 :     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
     110                 :            : }
     111                 :            : 
     112 [ +  - ][ +  - ]:        336 : }
     113                 :            : 
     114                 :            : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */