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/*
* CPU Usage Reporter
*
* COPYRIGHT (c) 1989-2007
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*
* $Id$
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems.h>
#include <assert.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <ctype.h>
#include <inttypes.h>
#include <rtems/cpuuse.h>
#include <rtems/bspIo.h>
#if defined(RTEMS_ENABLE_NANOSECOND_CPU_USAGE_STATISTICS)
#include <rtems/score/timespec.h>
#endif
#ifdef RTEMS_ENABLE_NANOSECOND_CPU_USAGE_STATISTICS
extern struct timespec CPU_usage_Uptime_at_last_reset;
#else
extern uint32_t CPU_usage_Ticks_at_last_reset;
#endif
/*PAGE
*
* rtems_cpu_usage_report
*/
void rtems_cpu_usage_report_with_plugin(
void *context,
rtems_printk_plugin_t print
)
{
uint32_t i;
uint32_t api_index;
Thread_Control *the_thread;
Objects_Information *information;
char name[13];
uint32_t ival, fval;
#ifdef RTEMS_ENABLE_NANOSECOND_CPU_USAGE_STATISTICS
struct timespec uptime, total, ran;
#else
uint32_t total_units = 0;
#endif
if ( !print )
return;
/*
* When not using nanosecond CPU usage resolution, we have to count
* the number of "ticks" we gave credit for to give the user a rough
* guideline as to what each number means proportionally.
*/
#ifdef RTEMS_ENABLE_NANOSECOND_CPU_USAGE_STATISTICS
_TOD_Get_uptime( &uptime );
_Timespec_Subtract( &CPU_usage_Uptime_at_last_reset, &uptime, &total );
#else
for ( api_index = 1 ; api_index <= OBJECTS_APIS_LAST ; api_index++ ) {
if ( !_Objects_Information_table[ api_index ] )
continue;
information = _Objects_Information_table[ api_index ][ 1 ];
if ( information ) {
for ( i=1 ; i <= information->maximum ; i++ ) {
the_thread = (Thread_Control *)information->local_table[ i ];
if ( the_thread )
total_units += the_thread->cpu_time_used;
}
}
}
#endif
(*print)( context, "CPU Usage by thread\n"
#if defined(RTEMS_ENABLE_NANOSECOND_CPU_USAGE_STATISTICS)
" ID NAME SECONDS PERCENT\n"
#else
" ID NAME TICKS PERCENT\n"
#endif
);
for ( api_index = 1 ;
api_index <= OBJECTS_APIS_LAST ;
api_index++ ) {
if ( !_Objects_Information_table[ api_index ] )
continue;
information = _Objects_Information_table[ api_index ][ 1 ];
if ( information ) {
for ( i=1 ; i <= information->maximum ; i++ ) {
the_thread = (Thread_Control *)information->local_table[ i ];
if ( !the_thread )
continue;
rtems_object_get_name( the_thread->Object.id, sizeof(name), name );
(*print)(
context,
"0x%08" PRIx32 " %-12s ",
the_thread->Object.id,
name
);
#ifdef RTEMS_ENABLE_NANOSECOND_CPU_USAGE_STATISTICS
/*
* If this is the currently executing thread, account for time
* since the last context switch.
*/
ran = the_thread->cpu_time_used;
if ( _Thread_Executing->Object.id == the_thread->Object.id ) {
struct timespec used;
_Timespec_Subtract(
&_Thread_Time_of_last_context_switch, &uptime, &used
);
_Timespec_Add_to( &ran, &used );
};
_Timespec_Divide( &ran, &total, &ival, &fval );
/*
* Print the information
*/
(*print)( context,
"%3" PRId32 ".%06" PRId32 " %3" PRId32 ".%03" PRId32 "\n",
ran.tv_sec, ran.tv_nsec / TOD_NANOSECONDS_PER_MICROSECOND,
ival, fval
);
#else
if (total_units) {
uint64_t ival_64;
ival_64 = the_thread->cpu_time_used;
ival_64 *= 10000;
ival = ival_64 / total_units;
} else {
ival = 0;
}
fval = ival % 100;
ival /= 100;
(*print)( context,
"%8" PRId32 " %3" PRId32 ".%02" PRId32"\n",
the_thread->cpu_time_used,
ival,
fval
);
#endif
}
}
}
#ifdef RTEMS_ENABLE_NANOSECOND_CPU_USAGE_STATISTICS
(*print)( context, "Time since last CPU Usage reset %" PRId32
".%06" PRId32 " seconds\n",
total.tv_sec,
total.tv_nsec / TOD_NANOSECONDS_PER_MICROSECOND
);
#else
(*print)( context,
"Ticks since last reset = %" PRId32 "\n",
_Watchdog_Ticks_since_boot - CPU_usage_Ticks_at_last_reset
);
(*print)( context, "Total Units = %" PRId32 "\n", total_units );
#endif
}
void rtems_cpu_usage_report( void )
{
rtems_cpu_usage_report_with_plugin( NULL, printk_plugin );
}
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