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/**
* @file
*
* @brief CPU Usage Reset
* @ingroup libmisc_cpuuse CPU Usage
*/
/*
* COPYRIGHT (c) 1989-2009
* 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 <rtems/cpuuse.h>
#include <rtems/score/thread.h>
#include <rtems/score/todimpl.h>
#include <rtems/score/watchdogimpl.h>
static void CPU_usage_Per_thread_handler(
Thread_Control *the_thread
)
{
#ifndef __RTEMS_USE_TICKS_FOR_STATISTICS__
_Timestamp_Set_to_zero( &the_thread->cpu_time_used );
#else
the_thread->cpu_time_used = 0;
#endif
}
/*
* rtems_cpu_usage_reset
*/
void rtems_cpu_usage_reset( void )
{
#ifndef __RTEMS_USE_TICKS_FOR_STATISTICS__
uint32_t processor_count;
uint32_t processor;
_TOD_Get_uptime( &CPU_usage_Uptime_at_last_reset );
processor_count = rtems_smp_get_processor_count();
for ( processor = 0 ; processor < processor_count ; ++processor ) {
Per_CPU_Control *per_cpu = _Per_CPU_Get_by_index( processor );
per_cpu->time_of_last_context_switch = CPU_usage_Uptime_at_last_reset;
}
#else
CPU_usage_Ticks_at_last_reset = _Watchdog_Ticks_since_boot;
#endif
rtems_iterate_over_all_threads(CPU_usage_Per_thread_handler);
}
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