Initial revision

1999-04-05 21:32:32 +00:00
parent a0e40c1fc1
commit 1eb87e7c73
136 changed files with 142 additions and 16521 deletions
@@ -0,0 +1,144 @@
+/***************************************************************************
+ * stopwatch.hxx        Timer class, for use in benchmarking
+ *
+ * Based on blitz/Timer.h
+ *
+ * $Id$
+ *
+ * Copyright (C) 1997,1998 Todd Veldhuizen <tveldhui@seurat.uwaterloo.ca>
+ *
+ * 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.
+ *
+ * Suggestions:          blitz-suggest@cybervision.com
+ * Bugs:                 blitz-bugs@cybervision.com
+ *
+ * For more information, please see the Blitz++ Home Page:
+ *    http://seurat.uwaterloo.ca/blitz/
+ *
+ ***************************************************************************
+ * $Log$
+ * Revision 1.1  1999/04/05 21:32:33  curt
+ * Initial revision
+ *
+ * Revision 1.3  1998/11/20 01:01:03  curt
+ * FreeBSD support.
+ *
+ * Revision 1.2  1998/11/02 18:28:31  curt
+ * Additional win32 support.
+ *
+ * Revision 1.1  1998/09/01 19:06:30  curt
+ * Initial revision.
+ *
+ * Revision 1.4  1998/03/14 00:04:47  tveldhui
+ * 0.2-alpha-05
+ *
+ * Revision 1.3  1997/07/16 14:51:20  tveldhui
+ * Update: Alpha release 0.2 (Arrays)
+ *
+ * Revision 1.2  1997/01/24 14:42:00  tveldhui
+ * Periodic RCS update
+ *
+ */
+
+// This class is not portable to non System V platforms.
+// It will need to be rewritten for Windows, NT, Mac.
+// NEEDS_WORK
+
+#ifndef _STOPWATCH_HXX
+#define _STOPWATCH_HXX
+
+#ifndef __cplusplus                                                          
+# error This library requires C++
+#endif                                   
+
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif
+
+#if defined(__linux__) && ! defined(HAVE_GETRUSAGE)
+#  define HAVE_GETRUSAGE
+#endif
+
+#if defined( WIN32 ) && defined( HAVE_GETRUSAGE )
+#  undef HAVE_GETRUSAGE
+#endif // WIN32
+
+#if defined( HAVE_GETRUSAGE )
+#  if defined( __FreeBSD__ )
+#    include <sys/types.h>
+#  endif 
+#  include <sys/time.h>
+#  include <sys/resource.h>
+#  include <unistd.h>
+#elif defined( WIN32 )
+#  include <windows.h>
+#else
+#  include <time.h>
+#endif
+
+class StopWatch {
+
+public:
+    StopWatch() 
+    { 
+//         state_ = uninitialized;
+    }
+
+    void start()
+    { 
+//         state_ = running;
+        t1_ = systemTime();
+    }
+
+    void stop()
+    {
+        t2_ = systemTime();
+// 	BZPRECONDITION(state_ == running);
+// 	state_ = stopped;
+    }
+
+    double elapsedSeconds()
+    {
+//         BZPRECONDITION(state_ == stopped);
+        return t2_ - t1_;
+    }
+
+private:
+    StopWatch(StopWatch&) { }
+    void operator=(StopWatch&) { }
+
+    double systemTime()
+    {
+#if defined( HAVE_GETRUSAGE )
+        getrusage(RUSAGE_SELF, &resourceUsage_);
+        double seconds = resourceUsage_.ru_utime.tv_sec 
+            + resourceUsage_.ru_stime.tv_sec;
+        double micros  = resourceUsage_.ru_utime.tv_usec 
+            + resourceUsage_.ru_stime.tv_usec;
+        return seconds + micros/1.0e6;
+#elif defined( WIN32 )
+	return double(GetTickCount()) * double(1e-3);
+#else
+        return clock() / (double) CLOCKS_PER_SEC;
+#endif
+    }
+
+//     enum { uninitialized, running, stopped } state_;
+
+#if defined( HAVE_GETRUSAGE )
+    struct rusage resourceUsage_;
+#endif
+
+    double t1_, t2_;
+};
+
+#endif // _STOPWATCH_HXX
+