add log4cplus

libs/log4cplus/src/pointer.cxx

@@ -0,0 +1,70 @@
+// Module:  Log4CPLUS
+// File:    pointer.cxx
+// Created: 6/2001
+// Author:  Tad E. Smith
+//
+//
+// Copyright 2001-2009 Tad E. Smith
+//
+// Licensed 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
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include <log4cplus/streams.h>
+#include <log4cplus/helpers/pointer.h>
+#include <log4cplus/helpers/threads.h>
+#include <assert.h>
+
+
+namespace log4cplus { namespace helpers {
+
+
+///////////////////////////////////////////////////////////////////////////////
+// log4cplus::helpers::SharedObject dtor
+///////////////////////////////////////////////////////////////////////////////
+
+SharedObject::~SharedObject()
+{
+    assert(count == 0);
+    LOG4CPLUS_MUTEX_FREE( access_mutex );
+}
+
+
+
+///////////////////////////////////////////////////////////////////////////////
+// log4cplus::helpers::SharedObject public methods
+///////////////////////////////////////////////////////////////////////////////
+
+void
+SharedObject::addReference() const
+{
+    LOG4CPLUS_BEGIN_SYNCHRONIZE_ON_MUTEX( access_mutex )
+        assert (count >= 0);
+        ++count;
+    LOG4CPLUS_END_SYNCHRONIZE_ON_MUTEX;
+}
+
+
+void
+SharedObject::removeReference() const
+{
+    bool destroy = false;
+    LOG4CPLUS_BEGIN_SYNCHRONIZE_ON_MUTEX( access_mutex );
+        assert (count > 0);
+        if (--count == 0)
+            destroy = true;
+    LOG4CPLUS_END_SYNCHRONIZE_ON_MUTEX;
+    if (destroy)
+        delete this;
+}
+
+
+} } // namespace log4cplus { namespace helpers