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/**
* @file
*
* @brief CPU Usage Report
* @ingroup libmisc_cpuuse CPU Usage
*/
/*
* COPYRIGHT (c) 1989-2010.
* 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.org/license/LICENSE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <ctype.h>
#include <inttypes.h>
#include <rtems/cpuuse.h>
#include <rtems/printer.h>
#include <rtems/score/threadimpl.h>
#include <rtems/score/todimpl.h>
#include "cpuuseimpl.h"
typedef struct {
const rtems_printer *printer;
Timestamp_Control total;
Timestamp_Control uptime_at_last_reset;
} cpu_usage_context;
static bool cpu_usage_visitor( Thread_Control *the_thread, void *arg )
{
cpu_usage_context *ctx;
char name[ 13 ];
uint32_t ival;
uint32_t fval;
Timestamp_Control uptime;
Timestamp_Control used;
uint32_t seconds;
uint32_t nanoseconds;
ctx = arg;
rtems_object_get_name( the_thread->Object.id, sizeof( name ), name );
rtems_printf(
ctx->printer,
" 0x%08" PRIx32 " | %-38s |",
the_thread->Object.id,
name
);
_Thread_Get_CPU_time_used( the_thread, &used );
_TOD_Get_uptime( &uptime );
_Timestamp_Subtract( &ctx->uptime_at_last_reset, &uptime, &ctx->total );
_Timestamp_Divide( &used, &ctx->total, &ival, &fval );
/*
* Print the information
*/
seconds = _Timestamp_Get_seconds( &used );
nanoseconds = _Timestamp_Get_nanoseconds( &used ) /
TOD_NANOSECONDS_PER_MICROSECOND;
rtems_printf( ctx->printer,
"%7" PRIu32 ".%06" PRIu32 " |%4" PRIu32 ".%03" PRIu32 "\n",
seconds, nanoseconds,
ival, fval
);
return false;
}
/*
* rtems_cpu_usage_report
*/
void rtems_cpu_usage_report_with_plugin(
const rtems_printer *printer
)
{
cpu_usage_context ctx;
uint32_t seconds;
uint32_t nanoseconds;
ctx.printer = printer;
/*
* 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.
*/
_Timestamp_Set_to_zero( &ctx.total );
ctx.uptime_at_last_reset = CPU_usage_Uptime_at_last_reset;
rtems_printf(
printer,
"-------------------------------------------------------------------------------\n"
" CPU USAGE BY THREAD\n"
"------------+----------------------------------------+---------------+---------\n"
" ID | NAME | SECONDS | PERCENT\n"
"------------+----------------------------------------+---------------+---------\n"
);
rtems_task_iterate( cpu_usage_visitor, &ctx );
seconds = _Timestamp_Get_seconds( &ctx.total );
nanoseconds = _Timestamp_Get_nanoseconds( &ctx.total ) /
TOD_NANOSECONDS_PER_MICROSECOND;
rtems_printf(
printer,
"------------+----------------------------------------+---------------+---------\n"
" TIME SINCE LAST CPU USAGE RESET IN SECONDS: %7" PRIu32 ".%06" PRIu32 "\n"
"-------------------------------------------------------------------------------\n",
seconds, nanoseconds
);
}
void rtems_cpu_usage_report( void )
{
rtems_printer printer;
rtems_print_printer_printk( &printer );
rtems_cpu_usage_report_with_plugin( &printer );
}
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