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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:06:44 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:06:44 +0000
commited5640d8b587fbcfed7dd7967f3de04b37a76f26 (patch)
tree7a5f7c6c9d02226d7471cb3cc8fbbf631b415303 /pyuno/source/module/pyuno_gc.cxx
parentInitial commit. (diff)
downloadlibreoffice-ed5640d8b587fbcfed7dd7967f3de04b37a76f26.tar.xz
libreoffice-ed5640d8b587fbcfed7dd7967f3de04b37a76f26.zip
Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'pyuno/source/module/pyuno_gc.cxx')
-rw-r--r--pyuno/source/module/pyuno_gc.cxx132
1 files changed, 132 insertions, 0 deletions
diff --git a/pyuno/source/module/pyuno_gc.cxx b/pyuno/source/module/pyuno_gc.cxx
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+++ b/pyuno/source/module/pyuno_gc.cxx
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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: */