Processor Mask

This group contains the implementation to support processor masks. More...

Files
file	cpukit/include/rtems/score/processormask.h
	This header file provides the interfaces of the Processor Mask.
file	cpukit/include/rtems/score/processormaskimpl.h
	This header file provides the interfaces of the Processor Mask.
file	cpukit/score/src/processormaskcopy.c
	This source file contains the definition of ::_Processor_mask_The_one_and_only and the implementation of _Processor_mask_Copy().

Enumerations
enum	Processor_mask_Copy_status { PROCESSOR_MASK_COPY_LOSSLESS , PROCESSOR_MASK_COPY_PARTIAL_LOSS , PROCESSOR_MASK_COPY_COMPLETE_LOSS , PROCESSOR_MASK_COPY_INVALID_SIZE }

Functions
typedef	__BITSET_DEFINE (Processor_mask, CPU_MAXIMUM_PROCESSORS) Processor_mask
	A bit map which is large enough to provide one bit for each processor in the system.
Processor_mask_Copy_status	_Processor_mask_Copy (long *dst, size_t dst_size, const long *src, size_t src_size)
	Copies one mask to another.

Variables
const Processor_mask	_Processor_mask_The_one_and_only

Detailed Description

This group contains the implementation to support processor masks.

The processor mask provides a bit map large enough to provide one bit for each processor in the system. It is a fixed size internal data type provided for efficiency in addition to the API level cpu_set_t.

Function Documentation

_Processor_mask_Copy()

Processor_mask_Copy_status _Processor_mask_Copy	(	long *	dst,
		size_t	dst_size,
		const long *	src,
		size_t	src_size )

Copies one mask to another.

Parameters

[out]	dst	The destination of the copy operation.
	dst_size	The size of dst.
	src	The source of the copy operation.
	src_size	The size of src.

Return values

PROCESSOR_MASK_COPY_LOSSLESS	It is guaranteed that the copy operation is lossless.
PROCESSOR_MASK_COPY_PARTIAL_LOSS	Partial loss happened due to the sizes of src and dst.
PROCESSOR_MASK_COPY_COMPLETE_LOSS	Complete loss happened due to the sizes of src and dst.
PROCESSOR_MASK_COPY_INVALID_SIZE	One of the arguments sizes is invalid (bigger than the size of a long).