1 files changed, 0 insertions, 186 deletions
diff --git a/performance-tests/Misc/test_singleton.cpp b/performance-tests/Misc/test_singleton.cpp
deleted file mode 100644
index f0f18644347..00000000000
--- a/performance-tests/Misc/test_singleton.cpp
+++ /dev/null
@@ -1,186 +0,0 @@
-// $Id$
-
-// This example illustrates the performance impact of using the
-// Double-Checked Locking pattern compared with using the "standard"
-// practice of acquiring and releasing a lock on every instance()
-// call.  In addition, we compare the performance of using the
-// ACE_Singleton (which encapsulates the Double-Check Locking pattern)
-// vs. hand-coding the pattern.
-//
-// Here's the output from running this test on our SPARCstation 20, model 712s.
-//
-// ./test_singleton 1000000
-// iterations = 1000000
-// ACE_Singleton
-// real time = 0.193731 secs, user time = 0.190416 secs, system time = 0.000549 secs
-// time per call = 0.193731 usecs
-// DC_Singleton
-// real time = 0.176208 secs, user time = 0.176045 secs, system time = 0.000092 secs
-// time per call = 0.176208 usecs
-// Mutex_Singleton
-// real time = 3.160998 secs, user time = 3.121434 secs, system time = 0.000109 secs
-// time per call = 3.160998 usecs
-//
-// As you can see, both Double-Checked Locking implementations are about
-// 15 times faster than the standard mutex version.  Moreover,
-// this test is run with only a single thread, so there's no contention
-// for the lock.  If there were multiple threads contending for the lock,
-// the Mutex_Singleton performance would get increasing worse...
-
-#include "ace/Profile_Timer.h"
-#include "ace/Singleton.h"
-#include "ace/Synch.h"
-#include "ace/Log_Msg.h"
-
-#if defined (ACE_HAS_THREADS)
-
-static const int DEFAULT_ITERATIONS = 100000000;
-
-class Mutex_Singleton
-{
-public:
-  Mutex_Singleton (void) {}
-  void svc (void) {}
-  static Mutex_Singleton *instance (void);
-
-private:
-  static ACE_Thread_Mutex lock_;
-  static Mutex_Singleton *instance_;
-};
-
-ACE_Thread_Mutex Mutex_Singleton::lock_;
-
-Mutex_Singleton *Mutex_Singleton::instance_;
-
-Mutex_Singleton *
-Mutex_Singleton::instance (void)
-{
-  // Acquire the lock every time in.
-  ACE_GUARD_RETURN (ACE_Thread_Mutex, ace_mon, Mutex_Singleton::lock_, 0);
-
-  if (Mutex_Singleton::instance_ == 0)
-    ACE_NEW_RETURN (Mutex_Singleton::instance_, Mutex_Singleton, 0);
-
-  return Mutex_Singleton::instance_;
-}
-
-class DC_Singleton
-{
-public:
-  DC_Singleton (void) {}
-  void svc (void) {}
-  static DC_Singleton *instance (void);
-
-private:
-  static ACE_Thread_Mutex lock_;
-  static DC_Singleton *instance_;
-};
-
-ACE_Thread_Mutex DC_Singleton::lock_;
-
-DC_Singleton *DC_Singleton::instance_;
-
-DC_Singleton *
-DC_Singleton::instance (void)
-{
-  if (DC_Singleton::instance_ == 0)
-    {
-      // Only lock if instance_ isn't 0.
-      ACE_GUARD_RETURN (ACE_Thread_Mutex, ace_mon, DC_Singleton::lock_, 0);
-
-      // Perform the Double-Check.
-      if (DC_Singleton::instance_ == 0)
-	ACE_NEW_RETURN (DC_Singleton::instance_, DC_Singleton, 0);
-    }
-
-  return DC_Singleton::instance_;
-}
-
-typedef ACE_Singleton <DC_Singleton, ACE_Thread_Mutex> My_Singleton;
-
-int
-main (int argc, char *argv[])
-{
-  ACE_Profile_Timer timer;
-  int iterations = argc > 1 ? ACE_OS::atoi (argv[1]) : DEFAULT_ITERATIONS;
-  int i;
-
-  ACE_DEBUG ((LM_DEBUG, "iterations = %d\n", iterations));
-
-  // Test the ACE_Singleton performance (which uses Double-Checked
-  // Locking).
-
-  timer.start ();
-
-  for (i = 0; i < iterations; i++)
-    My_Singleton::instance ()->svc ();
-
-  timer.stop ();
-
-  ACE_Profile_Timer::ACE_Elapsed_Time et;
-
-  timer.elapsed_time (et);
-
-  ACE_DEBUG ((LM_DEBUG, "ACE_Singleton\n"));
-  ACE_DEBUG ((LM_DEBUG, "real time = %f secs, user time = %f secs, system time = %f secs\n",
-	    et.real_time, et.user_time, et.system_time));
-
-  ACE_DEBUG ((LM_DEBUG, "time per call = %f usecs\n",
-	      (et.real_time / double (iterations)) * 1000000));
-
-  // Test the hand-coded Singleton performance (which uses
-  // Double-Checked Locking).
-
-  timer.start ();
-
-  for (i = 0; i < iterations; i++)
-    DC_Singleton::instance ()->svc ();
-
-  timer.stop ();
-
-  timer.elapsed_time (et);
-
-  ACE_DEBUG ((LM_DEBUG, "DC_Singleton\n"));
-  ACE_DEBUG ((LM_DEBUG, "real time = %f secs, user time = %f secs, system time = %f secs\n",
-	      et.real_time, et.user_time, et.system_time));
-
-  ACE_DEBUG ((LM_DEBUG, "time per call = %f usecs\n",
-	      (et.real_time / double (iterations)) * 1000000));
-
-  // Test the Mutex_Singleton implementation (which does not use
-  // Double-Checked Locking).
-
-  timer.start ();
-
-  for (i = 0; i < iterations; i++)
-    Mutex_Singleton::instance ()->svc ();
-
-  timer.stop ();
-
-  timer.elapsed_time (et);
-
-  ACE_DEBUG ((LM_DEBUG, "Mutex_Singleton\n"));
-  ACE_DEBUG ((LM_DEBUG, "real time = %f secs, user time = %f secs, system time = %f secs\n",
-	      et.real_time, et.user_time, et.system_time));
-
-  ACE_DEBUG ((LM_DEBUG, "time per call = %f usecs\n",
-	      (et.real_time / double (iterations)) * 1000000));
-
-  return 0;
-}
-
-#if defined (ACE_HAS_EXPLICIT_TEMPLATE_INSTANTIATION)
-template class ACE_Singleton<DC_Singleton, ACE_Thread_Mutex>;
-#elif defined (ACE_HAS_TEMPLATE_INSTANTIATION_PRAGMA)
-#pragma instantiate ACE_Singleton<DC_Singleton, ACE_Thread_Mutex>
-#endif /* ACE_HAS_EXPLICIT_TEMPLATE_INSTANTIATION */
-
-
-#else
-int
-main (int, char *[])
-{
-  ACE_ERROR ((LM_ERROR, "threads not supported on this platform\n"));
-  return 0;
-}
-#endif /* ACE_HAS_THREADS */