Cpu

Cpu and architecture related helpers. More...

Macros
#define	MIN(x, y)   (((x) > (y)) ? (y) : (x))
	Returns the minimum of the two parameters. More...
#define	MAX(x, y)   (((x) > (y)) ? (x) : (y))
	Returns the maximum of the two parameters. More...

Typedefs
typedef enum _Eina_Cpu_Features	Eina_Cpu_Features
	Enumerates different hardware architectures.

Enumerations
enum	_Eina_Cpu_Features {   EINA_CPU_MMX = 0x00000001,   EINA_CPU_SSE = 0x00000002,   EINA_CPU_SSE2 = 0x00000004,   EINA_CPU_SSE3 = 0x00000008,   EINA_CPU_ALTIVEC = 0x00000010,   EINA_CPU_VIS = 0x00000020,   EINA_CPU_NEON = 0x00000040,   EINA_CPU_SSSE3 = 0x00000080,   EINA_CPU_SSE41 = 0x00000100,   EINA_CPU_SSE42 = 0x00000200,   EINA_CPU_SVE = 0x00000400 }

Functions
EAPI Eina_Cpu_Features	eina_cpu_features_get (void)
	Cpu features accessor. More...
EAPI int	eina_cpu_count (void)
	Gets the current number of processors. More...
EAPI int	eina_cpu_page_size (void)
	Gets the current virtual page size. More...
static unsigned short	eina_swap16 (unsigned short x)
	Reverses the byte order of a 16-bit (destination) register. More...
static unsigned int	eina_swap32 (unsigned int x)
	Reverses the byte order of a 32-bit (destination) register. More...
static unsigned long long	eina_swap64 (unsigned long long x)
	Reverses the byte order of a 64-bit (destination) register. More...
static unsigned short	eina_htons (unsigned short host)
static unsigned int	eina_htonl (unsigned int host)
static unsigned long long	eina_htonll (unsigned long long host)
static unsigned short	eina_ntohs (unsigned short net)
static unsigned int	eina_ntohl (unsigned int net)
static unsigned long long	eina_ntohll (unsigned long long net)

Variables
EAPI Eina_Cpu_Features	eina_cpu_features
	Global hardware architecture handler. More...

Detailed Description

Cpu and architecture related helpers.

Macro Definition Documentation

MIN

#define MIN	(		x,
			y
	)		(((x) > (y)) ? (y) : (x))

Returns the minimum of the two parameters.

Warning

Beware of side effects, since the returned parameter is evaluated twice.

MAX

#define MAX	(		x,
			y
	)		(((x) > (y)) ? (x) : (y))

Returns the maximum of the two parameters.

Warning

Beware of side effects, since the returned parameter is evaluated twice.

Enumeration Type Documentation

_Eina_Cpu_Features

enum _Eina_Cpu_Features

Enumerator
EINA_CPU_MMX	Multimedia Extensions (Intel)
EINA_CPU_SSE	Streaming SIMD Extensions (Intel)
EINA_CPU_SSE2	Streaming SIMD Extensions 2 (Intel)
EINA_CPU_SSE3	Streaming SIMD Extensions 3 (Intel)
EINA_CPU_ALTIVEC	Single-precision floating point and integer SIMD (PowerPC)
EINA_CPU_VIS	Visual Instruction Set (Spark)
EINA_CPU_NEON	Advanced SIMD Extension (ARM)
EINA_CPU_SSSE3	Supplemental Streaming SIMD Extension 3 (Intel)
EINA_CPU_SSE41	Streaming SIMD Extension 4.1 (Intel)
EINA_CPU_SSE42	Streaming SIMD Extension 4.2 (Intel)
EINA_CPU_SVE	Scalable Vector Extension (ARM)

Function Documentation

eina_cpu_features_get()

EAPI Eina_Cpu_Features eina_cpu_features_get

(

void

)

Cpu features accessor.

Returns

the current cpu features

eina_cpu_count()

EAPI int eina_cpu_count

(

void

)

Gets the current number of processors.

Returns

The number of processors that are online, that is available when the function is called.

Referenced by ecore_thread_max_reset(), and ecore_thread_max_set().

eina_cpu_page_size()

EAPI int eina_cpu_page_size

(

void

)

Gets the current virtual page size.

Returns

The fixed length that represents the smallest unit of data for memory allocation performed by the operating system on behalf of the program, and for transfers between the main memory and any other auxiliary store.

Referenced by eina_mmap_safety_enabled_set().

eina_swap16()

static unsigned short eina_swap16 ( unsigned short  x )

inlinestatic

Reverses the byte order of a 16-bit (destination) register.

Parameters

[in]

x

The binary word to swap

Returns

A byte order swapped 16-bit integer.

On big endian systems, the number is converted to little endian byte order. On little endian systems, the number is converted to big endian byte order.

eina_swap32()

static unsigned int eina_swap32 ( unsigned int  x )

inlinestatic

Reverses the byte order of a 32-bit (destination) register.

Parameters

[in]

x

The binary word to swap

Returns

A byte order swapped 32-bit integer.

On big endian systems, the number is converted to little endian byte order. On little endian systems, the number is converted to big endian byte order.

eina_swap64()

static unsigned long long eina_swap64 ( unsigned long long  x )

inlinestatic

Reverses the byte order of a 64-bit (destination) register.

Parameters

[in]

x

The binary word to swap

Returns

A byte order swapped 64-bit integer.

On big endian systems, the number is converted to little endian byte order. On little endian systems, the number is converted to big endian byte order.

Variable Documentation

eina_cpu_features

EAPI Eina_Cpu_Features eina_cpu_features

Global hardware architecture handler.

Returns

the current cpu features