From 8c23e6b9615942ac464414b788c5f68b7f66e39d Mon Sep 17 00:00:00 2001
From: "Kevin M. Rosenberg" <kevin@rosenberg.net>
Date: Mon, 19 Jun 2000 19:12:05 +0000
Subject: [PATCH] r111: initial cvs import

---
 include/timer.h | 147 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 147 insertions(+)
 create mode 100644 include/timer.h

diff --git a/include/timer.h b/include/timer.h
new file mode 100644
index 0000000..781ee94
--- /dev/null
+++ b/include/timer.h
@@ -0,0 +1,147 @@
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <sys/time.h>
+
+class Timer
+{
+ public:
+    Timer (void)
+	{ m_timeStart = ttime(); }
+
+    virtual ~Timer (void)
+	{}
+
+    virtual double timerEnd (void)
+      {
+	m_timeEnd = ttime();
+	m_timeElapsed = m_timeEnd - m_timeStart;
+  
+	return (m_timeElapsed);
+      }
+
+    virtual void timerReport (const char* const msg) const
+      {
+	  cout << msg << ": " << m_timeElapsed << " seconds" << endl;
+      }
+
+    virtual double timerEndAndReport (const char* const msg)
+      {
+	timerEnd ();
+	timerReport (msg);
+      }
+
+    double getTimeElapsed (void) const
+	{ return m_timeElapsed; }
+
+ protected:
+    double m_timeStart;
+    double m_timeEnd;
+    double m_timeElapsed;
+
+    double ttime(void) const
+	{
+	    struct timeval now;
+	    if (gettimeofday (&now, NULL))
+		return 0;
+	    
+	    return (now.tv_sec + static_cast<double>(now.tv_usec) / 1000000.);
+	}
+};
+
+
+#ifdef HAVE_MPI
+
+#include "mpi++.h"
+
+class TimerMPI : public Timer
+{
+ public:
+    TimerMPI (MPI::Intracomm& comm)
+	: m_comm(comm)
+      {
+	  m_timeStart = MPI::Wtime();
+      }
+
+    virtual ~TimerMPI (void)
+      {}
+
+    virtual double timerEnd (void)
+      {
+	m_timeEnd = MPI::Wtime();
+	m_timeElapsed = m_timeEnd - m_timeStart;
+  
+	return (m_timeElapsed);
+      }
+
+    virtual void timerReport (const char* const msg)
+      {
+	  if (m_comm.Get_rank() == 0)
+	      cout << msg << ": " << m_timeElapsed << " seconds" << endl;
+      }
+
+    virtual double timerEndAndReport (const char* const msg)
+      {
+	timerEnd ();
+	timerReport (msg);
+      }
+
+    virtual void timerReportAllProcesses (const char* const msg)
+      {
+	  timerReport (msg);
+      }
+
+ protected:
+    MPI::Intracomm& m_comm;
+};
+
+class TimerCollectiveMPI : public TimerMPI
+{
+ public:
+    TimerCollectiveMPI (MPI::Intracomm& comm)
+	: TimerMPI::TimerMPI (comm)
+      {
+	m_comm.Barrier();
+	m_timeStart = MPI::Wtime();
+      }
+
+    virtual ~TimerCollectiveMPI (void)
+      {}
+
+    virtual double timerEnd (void)
+      {
+	m_timeEnd = MPI::Wtime();
+	m_timeElapsed = m_timeEnd - m_timeStart;
+	m_comm.Reduce (&m_timeElapsed, &m_timeMin, 1, MPI::DOUBLE, MPI::MIN, 0);
+	m_comm.Reduce (&m_timeElapsed, &m_timeMax, 1, MPI::DOUBLE, MPI::MAX, 0);
+  
+	return (m_timeElapsed);
+      }
+
+    virtual double timerEndAndReport (const char* const msg)
+      {
+	timerEnd ();
+	timerReport (msg);
+      }
+
+    virtual void timerReport (const char* const msg)
+      {
+	if (m_comm.Get_rank() == 0)
+	  cout << msg << " " << "Minimum=" << m_timeMin << ", Maximum=" << m_timeMax << " seconds" << endl;
+      }
+
+    virtual void timerReportAllProcesses (const char* const msg)
+      {
+	  cout << msg << ": " << "Minimum=" << m_timeMin << ", Maximum=" << m_timeMax << " seconds (Rank " << m_comm.Get_rank() << ")" << endl;
+      }
+
+ private:
+    double m_timeMin;
+    double m_timeMax;
+};
+#endif
+
+
+
+
-- 
2.34.1