From 79ab053483a62eeec6391d3f48097f85e07e1045 Mon Sep 17 00:00:00 2001
From: arvindk <arvindk@ae88bc3d-4319-0410-8dbf-d08b4c9d3795>
Date: Sat, 9 Apr 2005 22:21:04 +0000
Subject: ChangelogTag: Sat Apr 9 17:00:37 2005 Arvind S. Krishna 
 <arvindk@dre.vanderbilt.edu>

---
 tests/Memcpy_Test.cpp | 89 +++++++++++++++++++++++++++++++++++++++++++++++++++
 tests/run_test.lst    |  1 +
 tests/tests.mpc       |  7 ++++
 3 files changed, 97 insertions(+)
 create mode 100644 tests/Memcpy_Test.cpp

diff --git a/tests/Memcpy_Test.cpp b/tests/Memcpy_Test.cpp
new file mode 100644
index 00000000000..8dccd5fe40e
--- /dev/null
+++ b/tests/Memcpy_Test.cpp
@@ -0,0 +1,89 @@
+//$Id$
+
+#include "ace/Time_Value.h"
+#include "ace/OS_NS_time.h"
+#include "test_config.h"
+
+void*
+smemcpy( void* dest, const void* src, const size_t n)
+{
+  unsigned char*   to = static_cast<unsigned char*>( dest) ;
+  const unsigned char* from = static_cast<const unsigned char*>( src) ;
+  // Unroll the loop...
+  switch( n) {
+    case 16: to[ 15] = from[ 15] ;
+    case 15: to[ 14] = from[ 14] ;
+    case 14: to[ 13] = from[ 13] ;
+    case 13: to[ 12] = from[ 12] ;
+    case 12: to[ 11] = from[ 11] ;
+    case 11: to[ 10] = from[ 10] ;
+    case 10: to[  9] = from[  9] ;
+    case  9: to[  8] = from[  8] ;
+    case  8: to[  7] = from[  7] ;
+    case  7: to[  6] = from[  6] ;
+    case  6: to[  5] = from[  5] ;
+    case  5: to[  4] = from[  4] ;
+    case  4: to[  3] = from[  3] ;
+    case  3: to[  2] = from[  2] ;
+    case  2: to[  1] = from[  1] ;
+    case  1: to[  0] = from[  0] ;
+    case  0: return dest ;
+    default: return memcpy( dest, src, n) ;
+  }
+}
+
+void
+testit( int type)
+{
+  char buffer[16] ;
+  size_t size = 16 ;
+
+  switch( type) {
+    case 0: smemcpy( (void*)buffer, (void*)" THIS IS A TEST", size) ; break ;
+    case 1:  memcpy( (void*)buffer, (void*)" THIS IS A TEST", size) ; break ;
+  }
+
+}
+
+namespace { enum { ITERATIONS = 1000000 } ; }
+
+int
+run_main (int, ACE_TCHAR *[])
+{
+  ACE_START_TEST (ACE_TEXT ("Memcopy Performance Test"));
+
+  //ACE_Time_Value start, now ;
+  struct timeval start, now;
+
+  for( int i = ITERATIONS ; i > 0 ; --i) {
+    testit( 0) ;
+  }
+
+  start = ACE_OS::gettimeofday () ;
+  for( int i = ITERATIONS ; i > 0 ; --i) {
+    testit( 0) ;
+  }
+
+  now = ACE_OS::gettimeofday() ;
+
+  double fast = 1000000 * (now.tv_sec - start.tv_sec) +
+                now.tv_usec - start.tv_usec ;
+  ACE_DEBUG ((LM_DEBUG,
+              ACE_TEXT ("%f uSec per iteration for fast version.\n"),
+              fast / ITERATIONS
+            )) ;
+
+  start = ACE_OS::gettimeofday () ;
+  for( int i = ITERATIONS ; i > 0 ; --i) {
+    testit( 1) ;
+  }
+  now = ACE_OS::gettimeofday() ;
+
+  double slow = 1000000 * (now.tv_sec-start.tv_sec) + now.tv_usec - start.tv_usec ;
+  ACE_DEBUG ((LM_DEBUG,
+              ACE_TEXT ("%f uSec per iteration for fast version.\n"),
+              slow / ITERATIONS
+            )) ;
+
+  return 0 ;
+}
diff --git a/tests/run_test.lst b/tests/run_test.lst
index c20800093ca..ffeff5a5d38 100644
--- a/tests/run_test.lst
+++ b/tests/run_test.lst
@@ -71,6 +71,7 @@ Map_Manager_Test
 Map_Test
 Max_Default_Port_Test: !ST
 Mem_Map_Test: !chorus !Unicos !VxWorks
+Memcpy_Test
 Message_Block_Test: !chorus
 Message_Queue_Notifications_Test
 Message_Queue_Test: !chorus
diff --git a/tests/tests.mpc b/tests/tests.mpc
index 2242cb04395..7e713ec2c2b 100644
--- a/tests/tests.mpc
+++ b/tests/tests.mpc
@@ -154,6 +154,13 @@ project(Cache Map Manager Test) : acetest {
   }
 }
 
+project(Mem Copy Test) : acetest {
+  exename = Memcpy_Test
+  Source_Files {
+    Memcpy_Test.cpp
+  }
+}
+
 project(Cached Accept Conn Test) : acetest {
   exename = Cached_Accept_Conn_Test
   Source_Files {
-- 
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