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/**
* @file
*
* @brief Processor Mask API
*
* @ingroup ScoreProcessorMask
*/
/*
* Copyright (c) 2016, 2017 embedded brains GmbH. All rights reserved.
*
* embedded brains GmbH
* Dornierstr. 4
* 82178 Puchheim
* Germany
* <rtems@embedded-brains.de>
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#ifndef _RTEMS_SCORE_PROCESSORMASK_H
#define _RTEMS_SCORE_PROCESSORMASK_H
#include <rtems/score/cpu.h>
#include <sys/_bitset.h>
#include <sys/bitset.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
/**
* @defgroup ScoreProcessorMask Processor Mask
*
* @ingroup Score
*
* 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.
*
* @{
*/
/**
* @brief A bit map which is large enough to provide one bit for each processor
* in the system.
*/
typedef BITSET_DEFINE( Processor_mask, CPU_MAXIMUM_PROCESSORS ) Processor_mask;
RTEMS_INLINE_ROUTINE void _Processor_mask_Zero( Processor_mask *mask )
{
BIT_ZERO( CPU_MAXIMUM_PROCESSORS, mask );
}
RTEMS_INLINE_ROUTINE bool _Processor_mask_Is_zero( const Processor_mask *mask )
{
return BIT_EMPTY( CPU_MAXIMUM_PROCESSORS, mask );
}
RTEMS_INLINE_ROUTINE void _Processor_mask_Assign(
Processor_mask *dst, const Processor_mask *src
)
{
BIT_COPY( CPU_MAXIMUM_PROCESSORS, src, dst );
}
RTEMS_INLINE_ROUTINE void _Processor_mask_Set(
Processor_mask *mask,
uint32_t index
)
{
BIT_SET( CPU_MAXIMUM_PROCESSORS, index, mask );
}
RTEMS_INLINE_ROUTINE void _Processor_mask_Clear(
Processor_mask *mask,
uint32_t index
)
{
BIT_CLR( CPU_MAXIMUM_PROCESSORS, index, mask );
}
RTEMS_INLINE_ROUTINE bool _Processor_mask_Is_set(
const Processor_mask *mask,
uint32_t index
)
{
return BIT_ISSET( CPU_MAXIMUM_PROCESSORS, index, mask );
}
/**
* @brief Returns the subset of 32 processors containing the specified index as
* an unsigned 32-bit integer.
*/
RTEMS_INLINE_ROUTINE uint32_t _Processor_mask_To_uint32_t(
const Processor_mask *mask,
uint32_t index
)
{
long bits = mask->__bits[ __bitset_words( index ) ];
return (uint32_t) (bits >> (32 * (index % _BITSET_BITS) / 32));
}
/** @} */
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* _RTEMS_SCORE_PROCESSORMASK_H */
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