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/**
* @file
*
* @brief Implementation Helper for CPU Set
*
* This file contains the implementation helpers inlines and prototypes for
* CPU set methods.
*/
/*
* COPYRIGHT (c) 2014.
* On-Line Applications Research Corporation (OAR).
*
* 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_CPUSETIMPL_H
#define _RTEMS_SCORE_CPUSETIMPL_H
#include <rtems/score/cpuset.h>
#include <rtems/score/smp.h>
#include <limits.h>
#ifdef __cplusplus
extern "C" {
#endif
#ifdef __RTEMS_HAVE_SYS_CPUSET_H__
/**
* @brief Determine If the CPU Set if Valid
*
* This routine validates a cpuset size corresponds to the system
* correct size, that at least one valid cpu is set and that no invalid
* cpus are set.
*
* @param[in] cpuset is the cpuset to validate
* @param[in] setsize is the number of CPUs in the cpuset
*
* @return true if the set is valid
*/
bool _CPU_set_Is_valid( const cpu_set_t *cpuset, size_t setsize );
/**
* @brief Print the CPU Set
*
* This routine will print the value of the given cpuset.
*
* @param[in] description is a string to print before the value.
* @param[in] cpuset is the cpuset to validate
*/
void _CPU_set_Show( const char *description, const cpu_set_t *cpuset);
/**
* @brief Print the Default CPU Set
*
* This routine will print the value of the default cpuset.
*
* @param[in] description is a string to print before the value.
*/
void _CPU_set_Show_default( const char *description );
/**
* @brief Obtain the Default CPU Set
*
* This routine returns the default cpuset for this system.
*
* @return a pointer to the default cpuset.
*/
const CPU_set_Control *_CPU_set_Default(void);
/**
* @brief Obtain the Maximum Number of CPUs Representable in CPU Set
*
* This routine returns maximum number of CPUs that can be represented
* in the @a setsize specified.
*
* @return the number of representable cores in the cpuset
*/
RTEMS_INLINE_ROUTINE size_t _CPU_set_Maximum_CPU_count( size_t setsize )
{
return setsize * CHAR_BIT;
}
/**
* @brief Is this CPU Set Large Enough?
*
* This method can be used to determine if a particular cpuset is
* large enough for the number of CPUs in the system.
*
* @param[in] setsize is the number of CPUs in the cpuset
*
* @return true if the @a setsize is sufficient
*/
RTEMS_INLINE_ROUTINE bool _CPU_set_Is_large_enough(
size_t setsize
)
{
return _CPU_set_Maximum_CPU_count( setsize ) >= _SMP_Get_processor_count();
}
/**
* @brief Fill in CPU_set_Control
*
* This method fills in a CPU_set_Control based upon a cpu_set_t and
* size information.
*
* @param[in] cpuset is the cpuset to validate
* @param[in] setsize is the number of CPUs in the cpuset
*/
static inline void _CPU_set_Set(
size_t setsize,
cpu_set_t *cpuset,
CPU_set_Control *set
)
{
set->set = &set->preallocated;
set->setsize = setsize;
CPU_COPY( set->set, cpuset );
}
#endif
/**
* @brief Initialize the CPU Set Handler
*
* This routine validates a cpuset sets at least one valid cpu and that
* it does not set any invalid cpus.
*/
#if __RTEMS_HAVE_SYS_CPUSET_H__ && defined( RTEMS_SMP )
void _CPU_set_Handler_initialization(void);
#else
#define _CPU_set_Handler_initialization() do { } while ( 0 )
#endif
/**@}*/
#ifdef __cplusplus
}
#endif
#endif
/* end of include file */
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