#include <thread.h>

Data Fields
Objects_Control	Object

Thread_queue_Control	Join_queue
	Thread queue for thread join operations and multi-purpose lock. More...

States_Control	current_state

Priority_Node	Real_priority
	The base priority of this thread in its home scheduler instance.

Thread_Scheduler_control	Scheduler
	Scheduler related control.

Thread_Wait_information	Wait

Thread_Timer_information	Timer

bool	is_idle

bool	is_preemptible

bool	is_fp

bool	was_created_with_inherited_scheduler
	True, if the thread was created with an inherited scheduler (PTHREAD_INHERIT_SCHED), and false otherwise.

uint32_t	cpu_time_budget

Thread_CPU_budget_algorithms	budget_algorithm

Thread_CPU_budget_algorithm_callout	budget_callout

Timestamp_Control	cpu_time_used

Thread_Start_information	Start

Thread_Action_control	Post_switch_actions

Context_Control	Registers

Context_Control_fp *	fp_context

struct _reent *	libc_reent

void *	API_Extensions [THREAD_API_LAST+1]

Thread_Keys_information	Keys
	The POSIX Keys information.

Thread_Life_control	Life
	Thread life-cycle control. More...

Thread_Capture_control	Capture

struct rtems_user_env_t *	user_environment
	Pointer to an optional thread-specific POSIX user environment.

struct _pthread_cleanup_context *	last_cleanup_context
	LIFO list of POSIX cleanup contexts.

struct User_extensions_Iterator *	last_user_extensions_iterator
	LIFO list of user extensions iterators.

void *	extensions [RTEMS_ZERO_LENGTH_ARRAY]
	Variable length array of user extension pointers. More...

Detailed Description

This structure defines the Thread Control Block (TCB).

Uses a leading underscore in the structure name to allow forward declarations in standard header files provided by Newlib and GCC.

In case the second member changes (currently Join_queue), then the memset() in _Thread_Initialize() must be adjusted.

Field Documentation

◆ API_Extensions

void* _Thread_Control::API_Extensions[THREAD_API_LAST+1]

This array contains the API extension area pointers.

◆ budget_algorithm

Thread_CPU_budget_algorithms _Thread_Control::budget_algorithm

This field is the algorithm used to manage this thread's time quantum. The algorithm may be specified as none which case, no limit is in place.

◆ budget_callout

Thread_CPU_budget_algorithm_callout _Thread_Control::budget_callout

This field is the method invoked with the budgeted time is consumed.

◆ cpu_time_budget

uint32_t _Thread_Control::cpu_time_budget

This field is the length of the time quantum that this thread is allowed to consume. The algorithm used to manage limits on CPU usage is specified by budget_algorithm.

◆ cpu_time_used

Timestamp_Control _Thread_Control::cpu_time_used

This field is the amount of CPU time consumed by this thread since it was created.

◆ current_state

States_Control _Thread_Control::current_state

This field is the current execution state of this thread.

◆ extensions

void* _Thread_Control::extensions[RTEMS_ZERO_LENGTH_ARRAY]

Variable length array of user extension pointers.

The length is defined by the application via <rtems/confdefs.h>.

◆ fp_context

Context_Control_fp* _Thread_Control::fp_context

This field points to the floating point context for this thread. If NULL, the thread is integer only.

◆ is_fp

bool _Thread_Control::is_fp

This field is true if the thread uses the floating point unit.

◆ is_idle

bool _Thread_Control::is_idle

This field is true if the thread is an idle thread.

◆ is_preemptible

bool _Thread_Control::is_preemptible

This field is true if the thread is preemptible.

◆ Join_queue

Thread_queue_Control _Thread_Control::Join_queue

Thread queue for thread join operations and multi-purpose lock.

The lock of this thread queue is used for various purposes. It protects the following fields

RTEMS_API_Control::Signal,
Thread_Control::budget_algorithm,
Thread_Control::budget_callout,
Thread_Control::cpu_time_budget,
Thread_Control::current_state,
Thread_Control::Post_switch_actions,
Thread_Control::Scheduler::control, and
Thread_Control::Scheduler::own_control.

See also: _Thread_State_acquire().

◆ libc_reent

struct _reent* _Thread_Control::libc_reent

This field points to the newlib reentrancy structure for this thread.

◆ Life

Thread_Life_control _Thread_Control::Life

Thread life-cycle control.

Control state changes triggered by thread restart and delete requests.

◆ Object

Objects_Control _Thread_Control::Object

This field is the object management structure for each thread.

◆ Registers

Context_Control _Thread_Control::Registers

This field contains the context of this thread.

◆ Start

Thread_Start_information _Thread_Control::Start

This field contains information about the starting state of this thread.

◆ Timer

Thread_Timer_information _Thread_Control::Timer

This field is the Watchdog used to manage thread delays and timeouts.

◆ Wait

Thread_Wait_information _Thread_Control::Wait

This field is the blocking information for this thread.

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

cpukit/include/rtems/score/thread.h

Data Fields