1 files changed, 112 insertions, 0 deletions
diff --git a/src/RubyObjectTracker.cc b/src/RubyObjectTracker.cc
new file mode 100644
index 0000000..78450b0
--- /dev/null
+++ b/src/RubyObjectTracker.cc
@@ -0,0 +1,112 @@
+/*
+ * vdr-scripting - A plugin for the Linux Video Disk Recorder
+ * Copyright (c) 2009 Tobias Grimm <vdr@e-tobi.net>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ */
+
+#include "RubyObjectTracker.h"
+
+#ifdef DEBUG_RUBY_OBJECT_TRACKER
+#include <iostream>
+#endif
+
+using namespace std;
+
+TrackedRubyObject::TrackedRubyObject()
+  :_rubyObject(Qnil), _keepAlive(false)
+{
+}
+
+TrackedRubyObject::TrackedRubyObject(VALUE rubyObject, bool keepAlive)
+  :_rubyObject(rubyObject), _keepAlive(keepAlive)
+{
+}
+
+VALUE TrackedRubyObject::RubyObject()
+{
+    return _rubyObject;
+}
+
+void TrackedRubyObject::KeepAlive(bool keepAlive)
+{
+    _keepAlive = keepAlive;
+}
+
+void TrackedRubyObject::Mark()
+{
+    if (_keepAlive)
+    {
+#ifdef DEBUG_RUBY_OBJECT_TRACKER
+        cerr << "RubyObjectTracker::Mark(" << _rubyObject << ")" << endl;
+#endif
+        rb_gc_mark(_rubyObject);
+    }
+}
+
+void RubyObjectTracker::Track(void* cppPointer, VALUE rubyObject)
+{
+#ifdef DEBUG_RUBY_OBJECT_TRACKER
+    cerr << "RubyObjectTracker::Track(" << rubyObject << ")" << endl;
+#endif
+    _map[cppPointer] = TrackedRubyObject(rubyObject, false);
+}
+
+void RubyObjectTracker::Untrack(void* cppPointer)
+{
+#ifdef DEBUG_RUBY_OBJECT_TRACKER
+    map<void*, TrackedRubyObject>::iterator i = _map.find(cppPointer);
+    if (i != _map.end())
+    {
+        cerr << "RubyObjectTracker::Untrack(" << i->second.RubyObject() << ")" << endl;
+    }
+#endif
+    _map.erase(cppPointer);
+}
+
+VALUE RubyObjectTracker::GetTrackedRubyObject(void* cppPointer)
+{
+    if (_map.find(cppPointer) == _map.end())
+    {
+        return Qnil;
+    }
+    else
+    {
+        return _map.find(cppPointer)->second.RubyObject();
+    }
+}
+
+void RubyObjectTracker::KeepRubyObjectAlive(void* cppPointer)
+{
+    map<void*, TrackedRubyObject>::iterator i = _map.find(cppPointer);
+    if (i != _map.end())
+    {
+        i->second.KeepAlive(true);
+    }
+}
+
+void RubyObjectTracker::MarkTrackedRubyObjects()
+{
+    for ( map<void*, TrackedRubyObject>::iterator i = _map.begin() ; i != _map.end(); i++ )
+    {
+        i->second.Mark();
+    }
+}
+
+void RubyObjectTracker::MarkTrackedRubyObjects(void* self)
+{
+    ((RubyObjectTracker*) self)->MarkTrackedRubyObjects();
+}