forked from Imagelibrary/rtems
bc11ec273d
* libmisc/cpuuse/cpuuse.c, libmisc/cpuuse/cpuuse.h: Promote CPU Usage to first class citizen. Rename to start with rtems_ and include documentation in user guide.
141 lines
3.5 KiB
C
141 lines
3.5 KiB
C
/*
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* CPU Usage Reporter
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*
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* COPYRIGHT (c) 1989-2006
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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.com/license/LICENSE.
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*
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* $Id$
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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 <rtems.h>
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#include <assert.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.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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uint32_t CPU_usage_Ticks_at_last_reset;
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/*PAGE
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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( void )
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{
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uint32_t i;
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uint32_t api_index;
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Thread_Control *the_thread;
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Objects_Information *information;
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uint32_t u32_name;
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char *cname;
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char name[5];
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uint32_t ival, fval;
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uint32_t total_units = 0;
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for ( api_index = 1 ;
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api_index <= OBJECTS_APIS_LAST ;
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api_index++ ) {
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if ( !_Objects_Information_table[ api_index ] )
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continue;
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information = _Objects_Information_table[ api_index ][ 1 ];
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if ( information ) {
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for ( i=1 ; i <= information->maximum ; i++ ) {
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the_thread = (Thread_Control *)information->local_table[ i ];
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if ( the_thread )
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total_units += the_thread->ticks_executed;
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}
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}
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}
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fprintf(stdout,"CPU Usage by thread\n");
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fprintf(stdout, " ID NAME TICKS PERCENT\n" );
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for ( api_index = 1 ;
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api_index <= OBJECTS_APIS_LAST ;
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api_index++ ) {
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if ( !_Objects_Information_table[ api_index ] )
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continue;
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information = _Objects_Information_table[ api_index ][ 1 ];
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if ( information ) {
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for ( i=1 ; i <= information->maximum ; i++ ) {
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the_thread = (Thread_Control *)information->local_table[ i ];
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if ( !the_thread )
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continue;
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if ( information->is_string ) {
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cname = the_thread->Object.name;
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name[ 0 ] = cname[0];
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name[ 1 ] = cname[1];
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name[ 2 ] = cname[2];
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name[ 3 ] = cname[3];
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name[ 4 ] = '\0';
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} else {
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u32_name = (uint32_t )the_thread->Object.name;
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name[ 0 ] = (u32_name >> 24) & 0xff;
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name[ 1 ] = (u32_name >> 16) & 0xff;
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name[ 2 ] = (u32_name >> 8) & 0xff;
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name[ 3 ] = (u32_name >> 0) & 0xff;
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name[ 4 ] = '\0';
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}
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if ( !isprint(name[0]) ) name[0] = '*';
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if ( !isprint(name[1]) ) name[1] = '*';
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if ( !isprint(name[2]) ) name[2] = '*';
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if ( !isprint(name[3]) ) name[3] = '*';
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ival = total_units ?
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the_thread->ticks_executed * 10000 / total_units : 0;
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fval = ival % 100;
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ival /= 100;
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fprintf(stdout,
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"0x%08" PRIu32 " %4s %8" PRId32 " %3" PRId32
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".%2.2" PRId32"\n",
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the_thread->Object.id,
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name,
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the_thread->ticks_executed,
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ival,
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fval
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);
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}
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}
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}
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fprintf(stdout,
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"\nTicks since last reset = %" PRId32 "\n",
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_Watchdog_Ticks_since_boot - CPU_usage_Ticks_at_last_reset
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);
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fprintf(stdout, "\nTotal Units = %" PRId32 "\n", total_units );
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}
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static void CPU_usage_Per_thread_handler(
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Thread_Control *the_thread
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)
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{
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the_thread->ticks_executed = 0;
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}
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/*
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* rtems_cpu_usage_reset
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*/
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void rtems_cpu_usage_reset( void )
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{
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CPU_usage_Ticks_at_last_reset = _Watchdog_Ticks_since_boot;
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rtems_iterate_over_all_threads(CPU_usage_Per_thread_handler);
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}
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