forked from Imagelibrary/rtems
f9219db2a9
Add rtems_scheduler_get_processor_maximum() as a replacement for rtems_get_processor_count(). The rtems_get_processor_count() is a bit orphaned. Adopt it by the Scheduler Manager. The count is also misleading, since the processor set may have gaps and the actual count of online processors may be less than the value returned by rtems_get_processor_count(). Update #3732.
68 lines
1.6 KiB
C
68 lines
1.6 KiB
C
/**
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* @file
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*
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* @brief CPU Usage Reset
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* @ingroup libmisc_cpuuse CPU Usage
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*/
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/*
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* COPYRIGHT (c) 1989-2009
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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 <rtems/cpuuse.h>
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#include <rtems/score/percpu.h>
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#include <rtems/score/todimpl.h>
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#include <rtems/score/schedulerimpl.h>
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#include <rtems/score/watchdogimpl.h>
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#include "cpuuseimpl.h"
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static bool CPU_usage_Per_thread_handler(
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Thread_Control *the_thread,
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void *arg
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)
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{
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const Scheduler_Control *scheduler;
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ISR_lock_Context state_lock_context;
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ISR_lock_Context scheduler_lock_context;
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_Thread_State_acquire( the_thread, &state_lock_context );
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scheduler = _Thread_Scheduler_get_home( the_thread );
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_Scheduler_Acquire_critical( scheduler, &scheduler_lock_context );
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_Timestamp_Set_to_zero( &the_thread->cpu_time_used );
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_Scheduler_Release_critical( scheduler, &scheduler_lock_context );
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_Thread_State_release( the_thread, &state_lock_context );
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return false;
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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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uint32_t cpu_count;
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uint32_t cpu_index;
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_TOD_Get_uptime( &CPU_usage_Uptime_at_last_reset );
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cpu_count = rtems_scheduler_get_processor_maximum();
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for ( cpu_index = 0 ; cpu_index < cpu_count ; ++cpu_index ) {
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Per_CPU_Control *cpu = _Per_CPU_Get_by_index( cpu_index );
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cpu->cpu_usage_timestamp = CPU_usage_Uptime_at_last_reset;
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}
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rtems_task_iterate(CPU_usage_Per_thread_handler, NULL);
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}
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