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/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
*
* @ingroup RTEMSImplCPUUsageReporting
*
* @brief This source file contains the definition of
* rtems_cpu_usage_report() and rtems_cpu_usage_report_with_plugin().
*/
/*
* COPYRIGHT (c) 1989-2010.
* On-Line Applications Research Corporation (OAR).
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#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[ 38 ];
uint32_t ival;
uint32_t fval;
Timestamp_Control uptime;
Timestamp_Control used;
uint32_t seconds;
uint32_t nanoseconds;
ctx = arg;
_Thread_Get_name( the_thread, name, sizeof( name ) );
used = _Thread_Get_CPU_time_used_after_last_reset( the_thread );
_TOD_Get_uptime( &uptime );
_Timestamp_Subtract( &ctx->uptime_at_last_reset, &uptime, &ctx->total );
_Timestamp_Divide( &used, &ctx->total, &ival, &fval );
seconds = _Timestamp_Get_seconds( &used );
nanoseconds = _Timestamp_Get_nanoseconds( &used ) /
TOD_NANOSECONDS_PER_MICROSECOND;
rtems_printf(
ctx->printer,
" 0x%08" PRIx32 " | %-38s |"
"%7" PRIu32 ".%06" PRIu32 " |%4" PRIu32 ".%03" PRIu32 "\n",
the_thread->Object.id,
name,
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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