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// $Id$
// ============================================================================
//
// = LIBRARY
// TAO/tests/CDR
//
// = FILENAME
// growth.cpp
//
// = DESCRIPTION
// Helps in measuring how the growth strategy affects the
// performance of CDR streams.
//
// = AUTHORS
// Carlos O'Ryan
//
// ============================================================================
#include "ace/Get_Opt.h"
#include "ace/High_Res_Timer.h"
#include "ace/Log_Msg.h"
#include "tao/ORB.h"
#include "tao/debug.h"
#include "tao/CDR.h"
#include "ace/OS_NS_stdio.h"
ACE_RCSID(CDR, growth, "$Id$")
static int
test_write (TAO_OutputCDR &cdr, int n)
{
CORBA::Long l = 0xdeadbeef;
for (int i = 0; i < n; ++i)
{
if (cdr.write_long (l) == 0)
ACE_ERROR_RETURN ((LM_ERROR,
"write_long[%d] failed\n",
i),
1);
}
return 0;
}
static int
test_read (TAO_InputCDR &cdr, int n)
{
CORBA::Long xl;
for (int i = 0; i < n; ++i)
{
if (cdr.read_long (xl) == 0)
ACE_ERROR_RETURN ((LM_ERROR,
"read_long[%d] failed\n",
i),
1);
}
return 0;
}
int
main (int argc, char *argv[])
{
int n = 100;
int low = 64;
int hi = 4096;
int s = 4;
int quiet = 0;
ACE_Get_Opt get_opt (argc, argv, "dn:l:h:s:q");
int opt;
while ((opt = get_opt ()) != EOF)
{
switch (opt)
{
case 'd':
TAO_debug_level++;
break;
case 'n':
n = ACE_OS::atoi (get_opt.opt_arg ());
break;
case 'l':
low = ACE_OS::atoi (get_opt.opt_arg ());
break;
case 'h':
hi = ACE_OS::atoi (get_opt.opt_arg ());
break;
case 's':
s = ACE_OS::atoi (get_opt.opt_arg ());
break;
case 'q':
quiet = 1;
break;
case '?':
default:
ACE_DEBUG ((LM_DEBUG,
"Usage: %s "
"-d debug"
"-l low "
"-h high "
"-s step "
"-n n "
"\n"
"Writes and then reads longs to a CDR stream "
"starting from <low> up to <high> incrementing "
"by <step>, at each step run <n> iterations to "
"average."
"\n",
argv[0]));
return -1;
}
}
for (int x = low; x <= hi; x += s)
{
ACE_High_Res_Timer writing;
ACE_High_Res_Timer reading;
if (TAO_debug_level > 0)
ACE_DEBUG ((LM_DEBUG, "\nx= %d\n", x));
for (int i = 0; i < n; ++i)
{
writing.start_incr ();
TAO_OutputCDR output;
if (test_write (output, x) != 0)
{
return 1;
}
writing.stop_incr ();
reading.start_incr ();
TAO_InputCDR input (output);
if (test_read (input, x) != 0)
{
return 1;
}
reading.stop_incr ();
}
double m = n * x;
ACE_Time_Value wtv;
writing.elapsed_time_incr (wtv);
ACE_hrtime_t wusecs = wtv.sec ();
wusecs *= static_cast<ACE_UINT32> (ACE_ONE_SECOND_IN_USECS);
wusecs += wtv.usec ();
ACE_Time_Value rtv;
reading.elapsed_time_incr (rtv);
ACE_hrtime_t rusecs = rtv.sec ();
rusecs *= static_cast<ACE_UINT32> (ACE_ONE_SECOND_IN_USECS);
rusecs += rtv.usec ();
double write_average = ACE_HRTIME_CONVERSION(wusecs) / m;
double read_average = ACE_HRTIME_CONVERSION(rusecs) / m;
if (!quiet)
ACE_OS::printf ("AVE: %d %f %f\n",
x, write_average, read_average);
}
return 0;
}
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