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+// Copyright (C) 2006 International Business Machines and others.
+// All Rights Reserved.
+// This code is published under the Common Public License.
+//
+// $Id: IpTimedTask.hpp 1430 2009-04-20 20:58:25Z andreasw $
+//
+// Authors: Andreas Waechter IBM 2005-09-19
+
+#ifndef __IPTIMEDTASK_HPP__
+#define __IPTIMEDTASK_HPP__
+
+#include "IpUtils.hpp"
+
+namespace Ipopt
+{
+ /** This class is used to collect timing information for a
+ * particular task. */
+ class TimedTask
+ {
+ public:
+ /**@name Constructors/Destructors */
+ //@{
+ /** Default constructor. */
+ TimedTask()
+ :
+ total_time_(0.),
+ start_called_(false),
+ end_called_(true)
+ {}
+
+ /** Default destructor */
+ ~TimedTask()
+ {}
+ //@}
+
+ /** Method for resetting time to zero. */
+ void Reset()
+ {
+ total_time_ = 0.;
+ start_called_ = false;
+ end_called_ = true;
+ }
+
+ /** Method that is called before execution of the task. */
+ void Start()
+ {
+ DBG_ASSERT(end_called_);
+ DBG_ASSERT(!start_called_);
+ end_called_ = false;
+ start_called_ = true;
+ start_time_ = CpuTime();
+ }
+
+ /** Method that is called after execution of the task. */
+ void End()
+ {
+ DBG_ASSERT(!end_called_);
+ DBG_ASSERT(start_called_);
+ end_called_ = true;
+ start_called_ = false;
+ total_time_ += CpuTime() - start_time_;
+ }
+
+ /** Method that is called after execution of the task for which
+ * timing might have been started. This only updates the timing
+ * if the timing has indeed been conducted. This is useful to
+ * stop timing after catching exceptions. */
+ void EndIfStarted()
+ {
+ if (start_called_) {
+ end_called_ = true;
+ start_called_ = false;
+ total_time_ += CpuTime() - start_time_;
+ }
+ DBG_ASSERT(end_called_);
+ }
+
+ /** Method returning total time spend for task so far. */
+ Number TotalTime() const
+ {
+ DBG_ASSERT(end_called_);
+ return total_time_;
+ }
+
+ private:
+ /**@name Default Compiler Generated Methods (Hidden to avoid
+ * implicit creation/calling). These methods are not
+ * implemented and we do not want the compiler to implement them
+ * for us, so we declare them private and do not define
+ * them. This ensures that they will not be implicitly
+ * created/called. */
+ //@{
+ /** Copy Constructor */
+ TimedTask(const TimedTask&);
+
+ /** Overloaded Equals Operator */
+ void operator=(const TimedTask&);
+ //@}
+
+ /** Time at beginning of task. */
+ Number start_time_;
+ /** Total time for task measured so far. */
+ Number total_time_;
+
+ /** @name fields for debugging */
+ //@{
+ bool start_called_;
+ bool end_called_;
+ //@}
+
+ };
+} // namespace Ipopt
+
+#endif