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2026-08-22 08:43:54 +08:00 · 2020-01-17 10:33:21 -08:00
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+// Copyright (C) 2006, 2009 International Business Machines and others.
+// All Rights Reserved.
+// This code is published under the Eclipse Public License.
+//
+// $Id: IpTimedTask.hpp 1861 2010-12-21 21:34:47Z 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_cputime_(0.),
+        total_systime_(0.),
+        total_walltime_(0.),
+        start_called_(false),
+        end_called_(true)
+    {}
+
+    /** Default destructor */
+    ~TimedTask()
+    {}
+    //@}
+
+    /** Method for resetting time to zero. */
+    void Reset()
+    {
+      total_cputime_ = 0.;
+      total_systime_ = 0.;
+      total_walltime_ = 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_cputime_ = CpuTime();
+      start_systime_ = SysTime();
+      start_walltime_ = WallclockTime();
+    }
+
+    /** 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_cputime_ += CpuTime() - start_cputime_;
+      total_systime_ += SysTime() - start_systime_;
+      total_walltime_ += WallclockTime() - start_walltime_;
+    }
+
+    /** 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_cputime_ += CpuTime() - start_cputime_;
+        total_systime_ += SysTime() - start_systime_;
+        total_walltime_ += WallclockTime() - start_walltime_;
+      }
+      DBG_ASSERT(end_called_);
+    }
+
+    /** Method returning total CPU time spend for task so far. */
+    Number TotalCpuTime() const
+    {
+      DBG_ASSERT(end_called_);
+      return total_cputime_;
+    }
+
+    /** Method returning total system time spend for task so far. */
+    Number TotalSysTime() const
+    {
+      DBG_ASSERT(end_called_);
+      return total_systime_;
+    }
+
+    /** Method returning total wall clock time spend for task so far. */
+    Number TotalWallclockTime() const
+    {
+      DBG_ASSERT(end_called_);
+      return total_walltime_;
+    }
+
+  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&);
+    //@}
+
+    /** CPU time at beginning of task. */
+    Number start_cputime_;
+    /** Total CPU time for task measured so far. */
+    Number total_cputime_;
+    /** System time at beginning of task. */
+    Number start_systime_;
+    /** Total system time for task measured so far. */
+    Number total_systime_;
+    /** Wall clock time at beginning of task. */
+    Number start_walltime_;
+    /** Total wall clock time for task measured so far. */
+    Number total_walltime_;
+
+    /** @name fields for debugging */
+    //@{
+    bool start_called_;
+    bool end_called_;
+    //@}
+
+  };
+} // namespace Ipopt
+
+#endif