General Scheduler Configuration

Files
file	scheduler.h
	This header file contains interfaces to define a scheduler configuration for an application.

Macros
#define	CONFIGURE_CBS_MAXIMUM_SERVERS
	This configuration option is an integer define.
#define	CONFIGURE_MAXIMUM_PRIORITY
	This configuration option is an integer define.
#define	CONFIGURE_SCHEDULER_ASSIGNMENTS
	This configuration option is an initializer define.
#define	CONFIGURE_SCHEDULER_CBS
	This configuration option is a boolean feature define.
#define	CONFIGURE_SCHEDULER_EDF
	This configuration option is a boolean feature define.
#define	CONFIGURE_SCHEDULER_EDF_SMP
	This configuration option is a boolean feature define.
#define	CONFIGURE_SCHEDULER_NAME
	This configuration option is an integer define.
#define	CONFIGURE_SCHEDULER_PRIORITY
	This configuration option is a boolean feature define.
#define	CONFIGURE_SCHEDULER_PRIORITY_AFFINITY_SMP
	This configuration option is a boolean feature define.
#define	CONFIGURE_SCHEDULER_PRIORITY_SMP
	This configuration option is a boolean feature define.
#define	CONFIGURE_SCHEDULER_SIMPLE
	This configuration option is a boolean feature define.
#define	CONFIGURE_SCHEDULER_SIMPLE_SMP
	This configuration option is a boolean feature define.
#define	CONFIGURE_SCHEDULER_STRONG_APA
	This configuration option is a boolean feature define.
#define	CONFIGURE_SCHEDULER_TABLE_ENTRIES
	This configuration option is an initializer define.
#define	CONFIGURE_SCHEDULER_USER
	This configuration option is a boolean feature define.
#define	RTEMS_SCHEDULER_CBS(name)    static Scheduler_EDF_Context SCHEDULER_CBS_CONTEXT_NAME( name )
	Defines a CBS Scheduler instantiation.
#define	RTEMS_SCHEDULER_TABLE_CBS(name, obj_name)
	Defines a CBS Scheduler entry for the scheduler table.
#define	RTEMS_SCHEDULER_EDF(name)    static Scheduler_EDF_Context SCHEDULER_EDF_CONTEXT_NAME( name )
	Defines an EDF Scheduler instantiation.
#define	RTEMS_SCHEDULER_TABLE_EDF(name, obj_name)
	Defines an EDF Scheduler entry for the scheduler table.
#define	RTEMS_SCHEDULER_EDF_SMP(name)
	Defines an EDF SMP Scheduler instantiation.
#define	RTEMS_SCHEDULER_TABLE_EDF_SMP(name, obj_name)
	Defines an EDF SMP Scheduler entry for the scheduler table.
#define	RTEMS_SCHEDULER_PRIORITY(name, prio_count)
	Defines a Deterministic Priority Scheduler instantiation.
#define	RTEMS_SCHEDULER_TABLE_PRIORITY(name, obj_name)
	Defines a Deterministic Priority Scheduler entry for the scheduler table.
#define	RTEMS_SCHEDULER_PRIORITY_AFFINITY_SMP(name, prio_count)
	Defines a Arbitrary Processor Affinity Priority SMP Scheduler instantiation.
#define	RTEMS_SCHEDULER_TABLE_PRIORITY_AFFINITY_SMP(name, obj_name)
	Defines a Arbitrary Processor Affinity Priority SMP Scheduler entry for the scheduler table.
#define	RTEMS_SCHEDULER_PRIORITY_SMP(name, prio_count)
	Defines a Deterministic Priority SMP Scheduler instantiation.
#define	RTEMS_SCHEDULER_TABLE_PRIORITY_SMP(name, obj_name)
	Defines a Deterministic Priority SMP Scheduler entry for the scheduler table.
#define	RTEMS_SCHEDULER_STRONG_APA(name, prio_count)
	Defines a Strong APA Scheduler instantiation.
#define	RTEMS_SCHEDULER_TABLE_STRONG_APA(name, obj_name)
	Defines a Strong APA Scheduler entry for the scheduler table.
#define	RTEMS_SCHEDULER_SIMPLE(name)
	Defines a Simple Scheduler instantiation.
#define	RTEMS_SCHEDULER_TABLE_SIMPLE(name, obj_name)
	Defines a Simple Scheduler entry for the scheduler table.
#define	RTEMS_SCHEDULER_SIMPLE_SMP(name)
	Defines a Simple SMP Scheduler instantiation.
#define	RTEMS_SCHEDULER_TABLE_SIMPLE_SMP(name, obj_name)
	Defines a Simple SMP Scheduler entry for the scheduler table.

Detailed Description

This section describes configuration options related to selecting a scheduling algorithm for an application. A scheduler configuration is optional and only necessary in very specific circumstances. A normal application configuration does not need any of the configuration options described in this section.

By default, the Deterministic Priority Scheduler algorithm is used in uniprocessor configurations. In case SMP is enabled and the configured maximum processors (CONFIGURE_MAXIMUM_PROCESSORS) is greater than one, then the Earliest Deadline First SMP Scheduler is selected as the default scheduler algorithm.

For the schedulers provided by RTEMS (see Scheduling Concepts), the configuration is straightforward. All that is required is to define the configuration option which specifies which scheduler you want for in your application.

The pluggable scheduler interface also enables the user to provide their own scheduling algorithm. If you choose to do this, you must define multiple configuration option.

Macro Definition Documentation

CONFIGURE_CBS_MAXIMUM_SERVERS

#define CONFIGURE_CBS_MAXIMUM_SERVERS

This configuration option is an integer define.

The value of this configuration option defines the maximum number Constant Bandwidth Servers that can be concurrently active.

Default Value

The default value is CONFIGURE_MAXIMUM_TASKS.

Constraints

The following constraints apply to this configuration option:

• The value of the configuration option shall be greater than or equal to zero.
• The value of the configuration option shall be less than or equal to SIZE_MAX.
• The value of the configuration option shall be less than or equal to a BSP-specific and application-specific value which depends on the size of the memory available to the application.

Notes

This configuration option is only evaluated if the configuration option CONFIGURE_SCHEDULER_CBS is defined.

CONFIGURE_MAXIMUM_PRIORITY

#define CONFIGURE_MAXIMUM_PRIORITY

This configuration option is an integer define.

For the following schedulers

• Deterministic Priority Scheduler, which is the default in uniprocessor configurations and can be configured through the CONFIGURE_SCHEDULER_PRIORITY configuration option,
• Deterministic Priority SMP Scheduler which can be configured through the CONFIGURE_SCHEDULER_PRIORITY_SMP configuration option, and
• Arbitrary Processor Affinity Priority SMP Scheduler which can be configured through the CONFIGURE_SCHEDULER_PRIORITY_AFFINITY_SMP configuration option

this configuration option specifies the maximum numeric priority of any task for these schedulers and one less that the number of priority levels for these schedulers. For all other schedulers provided by RTEMS, this configuration option has no effect.

Default Value

The default value is 255.

Constraints

The value of the configuration option shall be equal to 3, 7, 31, 63, 127, or 255.

Notes

The numerically greatest priority is the logically lowest priority in the system and will thus be used by the IDLE task.

Priority zero is reserved for internal use by RTEMS and is not available to applications.

Reducing the number of priorities through this configuration option reduces the amount of memory allocated by the schedulers listed above. These schedulers use a chain control structure per priority and this structure consists of three pointers. On a 32-bit architecture, the allocated memory is 12 bytes * (CONFIGURE_MAXIMUM_PRIORITY + 1), e.g. 3072 bytes for 256 priority levels (default), 48 bytes for 4 priority levels (CONFIGURE_MAXIMUM_PRIORITY == 3).

The default value is 255, because RTEMS shall support 256 priority levels to be compliant with various standards. These priorities range from 0 to 255.

CONFIGURE_SCHEDULER_ASSIGNMENTS

#define CONFIGURE_SCHEDULER_ASSIGNMENTS

This configuration option is an initializer define.

The value of this configuration option is used to initialize the initial scheduler to processor assignments.

Default Value

The default value of this configuration option is computed so that the default scheduler is assigned to each configured processor (up to 32).

Constraints

The following constraints apply to this configuration option:

• The value of the configuration option shall be a list of the following macros:

  • RTEMS_SCHEDULER_ASSIGN( scheduler_index, attributes )
  • RTEMS_SCHEDULER_ASSIGN_NO_SCHEDULER

  The scheduler_index macro parameter shall be a valid index of the scheduler table defined by the CONFIGURE_SCHEDULER_TABLE_ENTRIES configuration option.

  The attributes macro parameter shall be set to exactly one of the following constants:

  • RTEMS_SCHEDULER_ASSIGN_PROCESSOR_MANDATORY
  • RTEMS_SCHEDULER_ASSIGN_PROCESSOR_OPTIONAL
• The value of the configuration option shall be a list of exactly CONFIGURE_MAXIMUM_PROCESSORS elements.

Notes

Where the system was built with SMP support enabled, this configuration option is evaluated, otherwise it is ignored.

This is an advanced configuration option, see Clustered Scheduler Configuration.

CONFIGURE_SCHEDULER_CBS

#define CONFIGURE_SCHEDULER_CBS

This configuration option is a boolean feature define.

In case this configuration option is defined, then the Constant Bandwidth Server Scheduling (CBS) algorithm is made available to the application.

Default Configuration

If this configuration option is undefined, then the described feature is not enabled.

Notes

This scheduler configuration option is an advanced configuration option. Think twice before you use it.

In case no explicit Clustered Scheduler Configuration is present, then it is used as the scheduler for exactly one processor.

CONFIGURE_SCHEDULER_EDF

#define CONFIGURE_SCHEDULER_EDF

This configuration option is a boolean feature define.

In case this configuration option is defined, then the Earliest Deadline First Scheduler algorithm is made available to the application.

Default Configuration

If this configuration option is undefined, then the described feature is not enabled.

Notes

This scheduler configuration option is an advanced configuration option. Think twice before you use it.

In case no explicit Clustered Scheduler Configuration is present, then it is used as the scheduler for exactly one processor.

CONFIGURE_SCHEDULER_EDF_SMP

#define CONFIGURE_SCHEDULER_EDF_SMP

This configuration option is a boolean feature define.

In case this configuration option is defined, then the Earliest Deadline First SMP Scheduler algorithm is made available to the application.

Default Configuration

If this configuration option is undefined, then the described feature is not enabled.

Notes

This scheduler configuration option is an advanced configuration option. Think twice before you use it.

This scheduler algorithm is only available when RTEMS is built with SMP support enabled.

In case no explicit Clustered Scheduler Configuration is present, then it is used as the scheduler for up to 32 processors.

This scheduler algorithm is the default in SMP configurations if CONFIGURE_MAXIMUM_PROCESSORS is greater than one.

CONFIGURE_SCHEDULER_NAME

#define CONFIGURE_SCHEDULER_NAME

This configuration option is an integer define.

The value of this configuration option defines the name of the default scheduler.

Default Value

The default value is

• "MEDF" for the Earliest Deadline First SMP Scheduler,
• "MPA " for the Arbitrary Processor Affinity Priority SMP Scheduler,
• "MPD " for the Deterministic Priority SMP Scheduler,
• "MPS " for the Simple Priority SMP Scheduler,
• "UCBS" for the Constant Bandwidth Server Scheduling (CBS),
• "UEDF" for the Earliest Deadline First Scheduler,
• "UPD " for the Deterministic Priority Scheduler, and
• "UPS " for the Simple Priority Scheduler.

Constraints

The value of the configuration option shall be convertible to an integer of type rtems_name.

Notes

This scheduler configuration option is an advanced configuration option. Think twice before you use it.

Schedulers can be identified via rtems_scheduler_ident().

Use rtems_build_name() to define the scheduler name.

CONFIGURE_SCHEDULER_PRIORITY

#define CONFIGURE_SCHEDULER_PRIORITY

This configuration option is a boolean feature define.

In case this configuration option is defined, then the Deterministic Priority Scheduler algorithm is made available to the application.

Default Configuration

If this configuration option is undefined, then the described feature is not enabled.

Notes

This scheduler configuration option is an advanced configuration option. Think twice before you use it.

In case no explicit Clustered Scheduler Configuration is present, then it is used as the scheduler for exactly one processor.

This scheduler algorithm is the default when CONFIGURE_MAXIMUM_PROCESSORS is exactly one.

The memory allocated for this scheduler depends on the CONFIGURE_MAXIMUM_PRIORITY configuration option.

CONFIGURE_SCHEDULER_PRIORITY_AFFINITY_SMP

#define CONFIGURE_SCHEDULER_PRIORITY_AFFINITY_SMP

This configuration option is a boolean feature define.

In case this configuration option is defined, then the Arbitrary Processor Affinity Priority SMP Scheduler algorithm is made available to the application.

Default Configuration

If this configuration option is undefined, then the described feature is not enabled.

Notes

This scheduler configuration option is an advanced configuration option. Think twice before you use it.

This scheduler algorithm is only available when RTEMS is built with SMP support enabled.

In case no explicit Clustered Scheduler Configuration is present, then it is used as the scheduler for up to 32 processors.

The memory allocated for this scheduler depends on the CONFIGURE_MAXIMUM_PRIORITY configuration option.

CONFIGURE_SCHEDULER_PRIORITY_SMP

#define CONFIGURE_SCHEDULER_PRIORITY_SMP

This configuration option is a boolean feature define.

In case this configuration option is defined, then the Deterministic Priority SMP Scheduler algorithm is made available to the application.

Default Configuration

If this configuration option is undefined, then the described feature is not enabled.

Notes

This scheduler configuration option is an advanced configuration option. Think twice before you use it.

This scheduler algorithm is only available when RTEMS is built with SMP support enabled.

In case no explicit Clustered Scheduler Configuration is present, then it is used as the scheduler for up to 32 processors.

The memory allocated for this scheduler depends on the CONFIGURE_MAXIMUM_PRIORITY configuration option.

CONFIGURE_SCHEDULER_SIMPLE

#define CONFIGURE_SCHEDULER_SIMPLE

This configuration option is a boolean feature define.

In case this configuration option is defined, then the Simple Priority Scheduler algorithm is made available to the application.

Default Configuration

If this configuration option is undefined, then the described feature is not enabled.

Notes

This scheduler configuration option is an advanced configuration option. Think twice before you use it.

In case no explicit Clustered Scheduler Configuration is present, then it is used as the scheduler for exactly one processor.

CONFIGURE_SCHEDULER_SIMPLE_SMP

#define CONFIGURE_SCHEDULER_SIMPLE_SMP

This configuration option is a boolean feature define.

In case this configuration option is defined, then the Simple Priority SMP Scheduler algorithm is made available to the application.

Default Configuration

If this configuration option is undefined, then the described feature is not enabled.

Notes

This scheduler configuration option is an advanced configuration option. Think twice before you use it.

This scheduler algorithm is only available when RTEMS is built with SMP support enabled.

In case no explicit Clustered Scheduler Configuration is present, then it is used as the scheduler for up to 32 processors.

CONFIGURE_SCHEDULER_STRONG_APA

#define CONFIGURE_SCHEDULER_STRONG_APA

This configuration option is a boolean feature define.

In case this configuration option is defined, then the Strong APA algorithm is made available to the application.

Default Configuration

If this configuration option is undefined, then the described feature is not enabled.

Notes

This scheduler configuration option is an advanced configuration option. Think twice before you use it.

This scheduler algorithm is only available when RTEMS is built with SMP support enabled.

This scheduler algorithm is not correctly implemented. Do not use it.

CONFIGURE_SCHEDULER_TABLE_ENTRIES

#define CONFIGURE_SCHEDULER_TABLE_ENTRIES

This configuration option is an initializer define.

The value of this configuration option is used to initialize the table of configured schedulers.

Default Value

The default value of this configuration option is the definition of exactly one table entry for the configured scheduler.

Constraints

The following constraints apply to this configuration option:

• The value of the configuration option shall be a list of the following macros:

  • RTEMS_SCHEDULER_TABLE_CBS( name, obj_name )
  • RTEMS_SCHEDULER_TABLE_EDF( name, obj_name )
  • RTEMS_SCHEDULER_TABLE_EDF_SMP( name, obj_name )
  • RTEMS_SCHEDULER_TABLE_PRIORITY_AFFINITY_SMP( name, obj_name )
  • RTEMS_SCHEDULER_TABLE_PRIORITY( name, obj_name )
  • RTEMS_SCHEDULER_TABLE_PRIORITY_SMP( name, obj_name )
  • RTEMS_SCHEDULER_TABLE_SIMPLE( name, obj_name )
  • RTEMS_SCHEDULER_TABLE_SIMPLE_SMP( name, obj_name )
  • RTEMS_SCHEDULER_TABLE_STRONG_APA( name, obj_name )

  The name macro parameter shall be the name associated with the scheduler data structures, see Clustered Scheduler Configuration.

  The obj_name macro parameter shall be the scheduler object name. It is recommended to define the scheduler object name through rtems_build_name().

• Where the system was build with SMP support enabled, the table shall have one or more entries, otherwise it shall have exactly one entry.

Notes

Schedulers registered in the scheduler table by this configuration option are available to the application. The scheduler table entry index defines the index of the scheduler.

This is an advanced configuration option, see Clustered Scheduler Configuration.

CONFIGURE_SCHEDULER_USER

#define CONFIGURE_SCHEDULER_USER

This configuration option is a boolean feature define.

In case this configuration option is defined, then the user shall provide a scheduler algorithm to the application.

Default Configuration

If this configuration option is undefined, then the described feature is not enabled.

Notes

This scheduler configuration option is an advanced configuration option. Think twice before you use it.

RTEMS allows the application to provide its own task/thread scheduling algorithm. In order to do this, one shall define CONFIGURE_SCHEDULER_USER to indicate the application provides its own scheduling algorithm. If CONFIGURE_SCHEDULER_USER is defined then the following additional macros shall be defined:

• CONFIGURE_SCHEDULER shall be defined to a static definition of the scheduler data structures of the user scheduler.
• CONFIGURE_SCHEDULER_TABLE_ENTRIES shall be defined to a scheduler table entry initializer for the user scheduler.
• CONFIGURE_SCHEDULER_USER_PER_THREAD shall be defined to the type of the per-thread information of the user scheduler.

At this time, the mechanics and requirements for writing a new scheduler are evolving and not fully documented. It is recommended that you look at the existing Deterministic Priority Scheduler in cpukit/score/src/schedulerpriority*.c for guidance. For guidance on the configuration macros, please examine cpukit/include/rtems/confdefs/scheduler.h for how these are defined for the Deterministic Priority Scheduler.

RTEMS_SCHEDULER_CBS

#define RTEMS_SCHEDULER_CBS

(

name

)

static Scheduler_EDF_Context SCHEDULER_CBS_CONTEXT_NAME( name )

Defines a CBS Scheduler instantiation.

Parameters

name	is the scheduler instantiation name.

RTEMS_SCHEDULER_EDF

#define RTEMS_SCHEDULER_EDF

(

name

)

static Scheduler_EDF_Context SCHEDULER_EDF_CONTEXT_NAME( name )

Defines an EDF Scheduler instantiation.

Parameters

name	is the scheduler instantiation name.

RTEMS_SCHEDULER_EDF_SMP

#define RTEMS_SCHEDULER_EDF_SMP

(

name

)

Value:

  static struct { \
    Scheduler_EDF_SMP_Context Base; \
    Scheduler_EDF_SMP_Ready_queue Ready[ CONFIGURE_MAXIMUM_PROCESSORS + 1 ]; \
  } SCHEDULER_EDF_SMP_CONTEXT_NAME( name )

Defines an EDF SMP Scheduler instantiation.

Parameters

name	is the scheduler instantiation name.

RTEMS_SCHEDULER_PRIORITY

#define RTEMS_SCHEDULER_PRIORITY	(		name,
			prio_count
	)

Value:

  static struct { \
    Scheduler_priority_Context Base; \
    Chain_Control              Ready[ ( prio_count ) ]; \
  } SCHEDULER_PRIORITY_CONTEXT_NAME( name )

Defines a Deterministic Priority Scheduler instantiation.

Parameters

name	is the scheduler instantiation name.
prio_count	is the count of supported priority levels.

RTEMS_SCHEDULER_PRIORITY_AFFINITY_SMP

#define RTEMS_SCHEDULER_PRIORITY_AFFINITY_SMP	(		name,
			prio_count
	)

Value:

  static struct { \
    Scheduler_priority_SMP_Context Base; \
    Chain_Control                  Ready[ ( prio_count ) ]; \
  } SCHEDULER_PRIORITY_AFFINITY_SMP_CONTEXT_NAME( name )

Defines a Arbitrary Processor Affinity Priority SMP Scheduler instantiation.

Parameters

name	is the scheduler instantiation name.
prio_count	is the count of supported priority levels.

RTEMS_SCHEDULER_PRIORITY_SMP

#define RTEMS_SCHEDULER_PRIORITY_SMP	(		name,
			prio_count
	)

Value:

  static struct { \
    Scheduler_priority_SMP_Context Base; \
    Chain_Control                  Ready[ ( prio_count ) ]; \
  } SCHEDULER_PRIORITY_SMP_CONTEXT_NAME( name )

Defines a Deterministic Priority SMP Scheduler instantiation.

Parameters

name	is the scheduler instantiation name.
prio_count	is the count of supported priority levels.

RTEMS_SCHEDULER_SIMPLE

#define RTEMS_SCHEDULER_SIMPLE

(

name

)

Value:

  static Scheduler_simple_Context \
    SCHEDULER_SIMPLE_CONTEXT_NAME( name )

Defines a Simple Scheduler instantiation.

Parameters

name	is the scheduler instantiation name.

RTEMS_SCHEDULER_SIMPLE_SMP

#define RTEMS_SCHEDULER_SIMPLE_SMP

(

name

)

Value:

  static Scheduler_simple_SMP_Context \
    SCHEDULER_SIMPLE_SMP_CONTEXT_NAME( name )

Defines a Simple SMP Scheduler instantiation.

Parameters

name	is the scheduler instantiation name.

RTEMS_SCHEDULER_STRONG_APA

#define RTEMS_SCHEDULER_STRONG_APA	(		name,
			prio_count
	)

Value:

  static struct { \
    Scheduler_strong_APA_Context Base; \
    Scheduler_strong_APA_CPU CPU[ CONFIGURE_MAXIMUM_PROCESSORS ]; \
  } SCHEDULER_STRONG_APA_CONTEXT_NAME( name )

Defines a Strong APA Scheduler instantiation.

Parameters

name	is the scheduler instantiation name.

RTEMS_SCHEDULER_TABLE_CBS

#define RTEMS_SCHEDULER_TABLE_CBS	(		name,
			obj_name
	)

Value:

  { \
    &SCHEDULER_CBS_CONTEXT_NAME( name ).Base, \
    SCHEDULER_CBS_ENTRY_POINTS, \
    SCHEDULER_CBS_MAXIMUM_PRIORITY, \
    ( obj_name ) \
    SCHEDULER_CONTROL_IS_NON_PREEMPT_MODE_SUPPORTED( true ) \
  }

Defines a CBS Scheduler entry for the scheduler table.

Use this macro to define an entry for the CONFIGURE_SCHEDULER_TABLE_ENTRIES application configuration option.

Parameters

name	is the scheduler instantiation name.
name	is the scheduler object name.

RTEMS_SCHEDULER_TABLE_EDF

#define RTEMS_SCHEDULER_TABLE_EDF	(		name,
			obj_name
	)

Value:

  { \
    &SCHEDULER_EDF_CONTEXT_NAME( name ).Base, \
    SCHEDULER_EDF_ENTRY_POINTS, \
    SCHEDULER_EDF_MAXIMUM_PRIORITY, \
    ( obj_name ) \
    SCHEDULER_CONTROL_IS_NON_PREEMPT_MODE_SUPPORTED( true ) \
  }

Defines an EDF Scheduler entry for the scheduler table.

Use this macro to define an entry for the CONFIGURE_SCHEDULER_TABLE_ENTRIES application configuration option.

Parameters

name	is the scheduler instantiation name.
name	is the scheduler object name.

RTEMS_SCHEDULER_TABLE_EDF_SMP

#define RTEMS_SCHEDULER_TABLE_EDF_SMP	(		name,
			obj_name
	)

Value:

  { \
    &SCHEDULER_EDF_SMP_CONTEXT_NAME( name ).Base.Base.Base, \
    SCHEDULER_EDF_SMP_ENTRY_POINTS, \
    SCHEDULER_EDF_MAXIMUM_PRIORITY, \
    ( obj_name ) \
    SCHEDULER_CONTROL_IS_NON_PREEMPT_MODE_SUPPORTED( false ) \
  }

Defines an EDF SMP Scheduler entry for the scheduler table.

Use this macro to define an entry for the CONFIGURE_SCHEDULER_TABLE_ENTRIES application configuration option.

Parameters

name	is the scheduler instantiation name.
name	is the scheduler object name.

RTEMS_SCHEDULER_TABLE_PRIORITY

#define RTEMS_SCHEDULER_TABLE_PRIORITY	(		name,
			obj_name
	)

Value:

  { \
    &SCHEDULER_PRIORITY_CONTEXT_NAME( name ).Base.Base, \
    SCHEDULER_PRIORITY_ENTRY_POINTS, \
    RTEMS_ARRAY_SIZE( \
      SCHEDULER_PRIORITY_CONTEXT_NAME( name ).Ready \
    ) - 1, \
    ( obj_name ) \
    SCHEDULER_CONTROL_IS_NON_PREEMPT_MODE_SUPPORTED( true ) \
  }

Defines a Deterministic Priority Scheduler entry for the scheduler table.

Use this macro to define an entry for the CONFIGURE_SCHEDULER_TABLE_ENTRIES application configuration option.

Parameters

name	is the scheduler instantiation name.
name	is the scheduler object name.

RTEMS_SCHEDULER_TABLE_PRIORITY_AFFINITY_SMP

#define RTEMS_SCHEDULER_TABLE_PRIORITY_AFFINITY_SMP	(		name,
			obj_name
	)

Value:

  { \
    &SCHEDULER_PRIORITY_AFFINITY_SMP_CONTEXT_NAME( name ).Base.Base.Base, \
    SCHEDULER_PRIORITY_AFFINITY_SMP_ENTRY_POINTS, \
    RTEMS_ARRAY_SIZE( \
      SCHEDULER_PRIORITY_AFFINITY_SMP_CONTEXT_NAME( name ).Ready \
    ) - 1, \
    ( obj_name ) \
    SCHEDULER_CONTROL_IS_NON_PREEMPT_MODE_SUPPORTED( false ) \
  }

Defines a Arbitrary Processor Affinity Priority SMP Scheduler entry for the scheduler table.

Use this macro to define an entry for the CONFIGURE_SCHEDULER_TABLE_ENTRIES application configuration option.

Parameters

name	is the scheduler instantiation name.
name	is the scheduler object name.

RTEMS_SCHEDULER_TABLE_PRIORITY_SMP

#define RTEMS_SCHEDULER_TABLE_PRIORITY_SMP	(		name,
			obj_name
	)

Value:

  { \
    &SCHEDULER_PRIORITY_SMP_CONTEXT_NAME( name ).Base.Base.Base, \
    SCHEDULER_PRIORITY_SMP_ENTRY_POINTS, \
    RTEMS_ARRAY_SIZE( \
      SCHEDULER_PRIORITY_SMP_CONTEXT_NAME( name ).Ready \
    ) - 1, \
    ( obj_name ) \
    SCHEDULER_CONTROL_IS_NON_PREEMPT_MODE_SUPPORTED( false ) \
  }

Defines a Deterministic Priority SMP Scheduler entry for the scheduler table.

Use this macro to define an entry for the CONFIGURE_SCHEDULER_TABLE_ENTRIES application configuration option.

Parameters

name	is the scheduler instantiation name.
name	is the scheduler object name.

RTEMS_SCHEDULER_TABLE_SIMPLE

#define RTEMS_SCHEDULER_TABLE_SIMPLE	(		name,
			obj_name
	)

Value:

  { \
    &SCHEDULER_SIMPLE_CONTEXT_NAME( name ).Base, \
    SCHEDULER_SIMPLE_ENTRY_POINTS, \
    SCHEDULER_SIMPLE_MAXIMUM_PRIORITY, \
    ( obj_name ) \
    SCHEDULER_CONTROL_IS_NON_PREEMPT_MODE_SUPPORTED( true ) \
  }

Defines a Simple Scheduler entry for the scheduler table.

Use this macro to define an entry for the CONFIGURE_SCHEDULER_TABLE_ENTRIES application configuration option.

Parameters

name	is the scheduler instantiation name.
name	is the scheduler object name.

RTEMS_SCHEDULER_TABLE_SIMPLE_SMP

#define RTEMS_SCHEDULER_TABLE_SIMPLE_SMP	(		name,
			obj_name
	)

Value:

  { \
    &SCHEDULER_SIMPLE_SMP_CONTEXT_NAME( name ).Base.Base, \
    SCHEDULER_SIMPLE_SMP_ENTRY_POINTS, \
    SCHEDULER_SIMPLE_SMP_MAXIMUM_PRIORITY, \
    ( obj_name ) \
    SCHEDULER_CONTROL_IS_NON_PREEMPT_MODE_SUPPORTED( false ) \
  }

Defines a Simple SMP Scheduler entry for the scheduler table.

Use this macro to define an entry for the CONFIGURE_SCHEDULER_TABLE_ENTRIES application configuration option.

Parameters

name	is the scheduler instantiation name.
name	is the scheduler object name.

RTEMS_SCHEDULER_TABLE_STRONG_APA

#define RTEMS_SCHEDULER_TABLE_STRONG_APA	(		name,
			obj_name
	)

Value:

  { \
    &SCHEDULER_STRONG_APA_CONTEXT_NAME( name ).Base.Base.Base, \
    SCHEDULER_STRONG_APA_ENTRY_POINTS, \
    SCHEDULER_STRONG_APA_MAXIMUM_PRIORITY, \
    ( obj_name ) \
    SCHEDULER_CONTROL_IS_NON_PREEMPT_MODE_SUPPORTED( false ) \
  }

Defines a Strong APA Scheduler entry for the scheduler table.

Use this macro to define an entry for the CONFIGURE_SCHEDULER_TABLE_ENTRIES application configuration option.

Parameters

name	is the scheduler instantiation name.
name	is the scheduler object name.