zos-sys-info.cc File Reference

#include "zos-sys-info.h"
#include <assert.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>

Functions
int	__get_num_online_cpus (void)
int	__get_num_frames (void)
oslvl_t	__get_os_level (void)
bool	__is_os_level_at_or_above (oslvl_t level)
bool	__is_stfle_available ()
bool	__is_vxf_available ()
bool	__is_vef1_available ()
char *	__get_cpu_model (char *buffer, size_t size)

Function Documentation

__get_cpu_model()

char * __get_cpu_model	(	char *	buffer,
		size_t	size
	)

Gets the 4 character CPU model of the system, including the null terminating character. Truncated if buffer size is too small.

Parameters

buffer	pointer to the buffer where the cpu model is to be stored
size	the size of the buffer

Returns

pointer to the buffer.

__get_num_frames()

int __get_num_frames

(

void

)

Get the number of frames currently available to the system

Returns

returns the number of available frames

__get_num_online_cpus()

int __get_num_online_cpus

(

void

)

Get the number of online CPUs

Returns

returns the number of online CPUs

__get_os_level()

oslvl_t __get_os_level

(

void

)

Get the OS level

Returns

the OS level as ZOSLVL_V2R1/2/3/4/5 (values are in ascending order)

__is_os_level_at_or_above()

bool __is_os_level_at_or_above

(

oslvl_t

level

)

Check if current OS is at or above a given level

Returns

true if the current OS level is at or above the given level, and false otherwise

__is_stfle_available()

bool __is_stfle_available

(

)

Check if STFLE (STORE FACILITY LIST EXTENDED) instruction is available

Returns

true if the STFLE instruction is available

__is_vef1_available()

bool __is_vef1_available

(

)

Check if the current z arch includes Vector Enhancements Facility 1

Returns

true if Vector Enhancements Facility 1 instructions are available, and false otherwise

__is_vxf_available()

bool __is_vxf_available

(

)

Check if the current z arch includes Vector Extension Facility

Returns

true if Vector Extension Facility instructions are available, and false otherwise