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/* -*- Mode:C; c-basic-offset:4; tab-width:4 -*-
****************************************************************************
* (C) 2004 - Rolf Neugebauer - Intel Research Cambridge
****************************************************************************
*
* File: xenperf.c
* Author: Rolf Neugebauer (rolf.neugebauer@intel.com)
* Date: Nov 2004
*
* Description:
*/
#include <xc.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/mman.h>
#include <errno.h>
#include <string.h>
int main(int argc, char *argv[])
{
int i, j, xc_handle;
xc_perfc_desc_t *pcd;
unsigned int num, sum, reset = 0, full = 0;
if ( argc > 1 )
{
char *p = argv[1];
if ( p[0] == '-' )
{
switch ( p[1] )
{
case 'f':
full = 1;
break;
case 'r':
reset = 1;
break;
default:
goto error;
}
}
else
{
error:
printf("%s: [-r]\n", argv[0]);
printf("no args: print digested counters\n");
printf(" -f : print full arrays/histograms\n");
printf(" -r : reset counters\n");
return 0;
}
}
if ( (xc_handle = xc_interface_open()) == -1 )
{
fprintf(stderr, "Error opening xc interface: %d (%s)\n",
errno, strerror(errno));
return 1;
}
if ( reset )
{
if ( xc_perfc_control(xc_handle, DOM0_PERFCCONTROL_OP_RESET,
NULL) < 0 )
{
fprintf(stderr, "Error reseting performance counters: %d (%s)\n",
errno, strerror(errno));
return 1;
}
return 0;
}
if ( (num = xc_perfc_control(xc_handle, DOM0_PERFCCONTROL_OP_QUERY,
NULL)) < 0 )
{
fprintf(stderr, "Error getting number of perf counters: %d (%s)\n",
errno, strerror(errno));
return 1;
}
pcd = malloc(sizeof(*pcd) * num);
if ( mlock(pcd, sizeof(*pcd) * num) != 0 )
{
fprintf(stderr, "Could not mlock descriptor buffer: %d (%s)\n",
errno, strerror(errno));
exit(-1);
}
if ( xc_perfc_control(xc_handle, DOM0_PERFCCONTROL_OP_QUERY, pcd) <= 0 )
{
fprintf(stderr, "Error getting perf counter description: %d (%s)\n",
errno, strerror(errno));
return 1;
}
munlock(pcd, sizeof(*pcd) * num);
for ( i = 0; i < num; i++ )
{
printf ("%-35s ", pcd[i].name);
sum = 0;
for ( j = 0; j < pcd[i].nr_vals; j++ )
sum += pcd[i].vals[j];
printf ("T=%10u ", (unsigned int)sum);
if ( full || (pcd[i].nr_vals <= 4) )
for ( j = 0; j < pcd[i].nr_vals; j++ )
printf(" %10u", (unsigned int)pcd[i].vals[j]);
printf("\n");
}
return 0;
}
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