The following structure defines the control block used to manage each period. More...

#include <ratemondata.h>

Data Fields
Objects_Control	Object

Watchdog_Control	Timer
	Protects the rate monotonic period state. More...

rtems_rate_monotonic_period_states	state

Priority_Node	Priority
	A priority node for use by the scheduler job release and cancel operations.

uint32_t	next_length

Thread_Control *	owner

Timestamp_Control	cpu_usage_period_initiated

Timestamp_Control	time_period_initiated

Rate_monotonic_Statistics	Statistics

uint32_t	postponed_jobs

uint64_t	latest_deadline

Detailed Description

The following structure defines the control block used to manage each period.

State changes are protected by the default thread lock of the owner thread. The owner thread is the thread that created the period object. The owner thread field is immutable after object creation.

Field Documentation

◆ cpu_usage_period_initiated

Timestamp_Control Rate_monotonic_Control::cpu_usage_period_initiated

This field contains the cpu usage value of the owning thread when the period was initiated. It is used to compute the period's statistics.

◆ latest_deadline

uint64_t Rate_monotonic_Control::latest_deadline

This field contains the tick of the latest deadline decided by the period watchdog.

◆ next_length

uint32_t Rate_monotonic_Control::next_length

This field contains the length of the next period to be executed.

◆ Object

Objects_Control Rate_monotonic_Control::Object

This field is the object management portion of a Period instance.

◆ owner

Thread_Control* Rate_monotonic_Control::owner

This field contains a pointer to the TCB for the thread which owns and uses this period instance.

◆ postponed_jobs

uint32_t Rate_monotonic_Control::postponed_jobs

This field contains the number of postponed jobs. When the watchdog timeout, this variable will be increased immediately.

◆ state

rtems_rate_monotonic_period_states Rate_monotonic_Control::state

This field indicates the current state of the period.

◆ Statistics

Rate_monotonic_Statistics Rate_monotonic_Control::Statistics

This field contains the statistics maintained for the period.

◆ time_period_initiated

Timestamp_Control Rate_monotonic_Control::time_period_initiated

This field contains the wall time value when the period was initiated. It is used to compute the period's statistics.

◆ Timer

Watchdog_Control Rate_monotonic_Control::Timer

Protects the rate monotonic period state.

This is the timer used to provide the unblocking mechanism.

The documentation for this struct was generated from the following file:

cpukit/include/rtems/rtems/ratemondata.h

Data Fields