New PollingScheduler class for calculating timeouts for select() and
moments when next polling pass should be started. Current
implementation does not change scheduling algorithm used in previous
versions, so this change is just a code refactoring to prepare for
ongoing improvements.
git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@493 3789f03b-4d11-0410-bbf8-ca57d06f2519
diff --git a/x0vncserver/PollingScheduler.cxx b/x0vncserver/PollingScheduler.cxx
new file mode 100644
index 0000000..2d28491
--- /dev/null
+++ b/x0vncserver/PollingScheduler.cxx
@@ -0,0 +1,60 @@
+/* Copyright (C) 2006 Constantin Kaplinsky. All Rights Reserved.
+ *
+ * This 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 software 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 software; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+ * USA.
+ */
+
+//
+// PollingScheduler.cxx
+//
+
+#include <x0vncserver/PollingScheduler.h>
+
+PollingScheduler::PollingScheduler(int interval)
+{
+ setInterval(interval);
+ reset();
+}
+
+void PollingScheduler::setInterval(int interval)
+{
+ m_interval = interval;
+}
+
+void PollingScheduler::reset()
+{
+ initialState = true;
+}
+
+void PollingScheduler::newPass()
+{
+ m_passStarted.update();
+ initialState = false;
+}
+
+int PollingScheduler::millisRemaining() const
+{
+ if (initialState)
+ return 0;
+
+ TimeMillis timeNow;
+ int elapsed = timeNow.diffFrom(m_passStarted);
+
+ if (elapsed > m_interval)
+ return 0;
+
+ return (m_interval - elapsed);
+}
+