forked from Imagelibrary/rtems
125 lines
3.4 KiB
C
125 lines
3.4 KiB
C
/**
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* @file
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*
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* @brief CPU Usage Report
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* @ingroup libmisc_cpuuse CPU Usage
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*/
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/*
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* COPYRIGHT (c) 1989-2010.
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* On-Line Applications Research Corporation (OAR).
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rtems.org/license/LICENSE.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <string.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <ctype.h>
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#include <inttypes.h>
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#include <rtems/cpuuse.h>
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#include <rtems/printer.h>
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#include <rtems/score/threadimpl.h>
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#include <rtems/score/todimpl.h>
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#include "cpuuseimpl.h"
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typedef struct {
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const rtems_printer *printer;
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Timestamp_Control total;
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Timestamp_Control uptime_at_last_reset;
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} cpu_usage_context;
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static bool cpu_usage_visitor( Thread_Control *the_thread, void *arg )
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{
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cpu_usage_context *ctx;
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char name[ 38 ];
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uint32_t ival;
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uint32_t fval;
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Timestamp_Control uptime;
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Timestamp_Control used;
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uint32_t seconds;
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uint32_t nanoseconds;
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ctx = arg;
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_Thread_Get_name( the_thread, name, sizeof( name ) );
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_Thread_Get_CPU_time_used( the_thread, &used );
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_TOD_Get_uptime( &uptime );
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_Timestamp_Subtract( &ctx->uptime_at_last_reset, &uptime, &ctx->total );
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_Timestamp_Divide( &used, &ctx->total, &ival, &fval );
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seconds = _Timestamp_Get_seconds( &used );
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nanoseconds = _Timestamp_Get_nanoseconds( &used ) /
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TOD_NANOSECONDS_PER_MICROSECOND;
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rtems_printf(
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ctx->printer,
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" 0x%08" PRIx32 " | %-38s |"
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"%7" PRIu32 ".%06" PRIu32 " |%4" PRIu32 ".%03" PRIu32 "\n",
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the_thread->Object.id,
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name,
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seconds, nanoseconds,
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ival, fval
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);
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return false;
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}
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/*
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* rtems_cpu_usage_report
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*/
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void rtems_cpu_usage_report_with_plugin(
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const rtems_printer *printer
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)
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{
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cpu_usage_context ctx;
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uint32_t seconds;
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uint32_t nanoseconds;
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ctx.printer = printer;
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/*
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* When not using nanosecond CPU usage resolution, we have to count
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* the number of "ticks" we gave credit for to give the user a rough
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* guideline as to what each number means proportionally.
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*/
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_Timestamp_Set_to_zero( &ctx.total );
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ctx.uptime_at_last_reset = CPU_usage_Uptime_at_last_reset;
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rtems_printf(
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printer,
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"-------------------------------------------------------------------------------\n"
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" CPU USAGE BY THREAD\n"
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"------------+----------------------------------------+---------------+---------\n"
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" ID | NAME | SECONDS | PERCENT\n"
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"------------+----------------------------------------+---------------+---------\n"
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);
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rtems_task_iterate( cpu_usage_visitor, &ctx );
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seconds = _Timestamp_Get_seconds( &ctx.total );
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nanoseconds = _Timestamp_Get_nanoseconds( &ctx.total ) /
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TOD_NANOSECONDS_PER_MICROSECOND;
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rtems_printf(
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printer,
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"------------+----------------------------------------+---------------+---------\n"
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" TIME SINCE LAST CPU USAGE RESET IN SECONDS: %7" PRIu32 ".%06" PRIu32 "\n"
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"-------------------------------------------------------------------------------\n",
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seconds, nanoseconds
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);
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}
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void rtems_cpu_usage_report( void )
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{
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rtems_printer printer;
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rtems_print_printer_printk( &printer );
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rtems_cpu_usage_report_with_plugin( &printer );
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}
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