org.aoju.bus.health.common.mac

Class SmcUtils

java.lang.Object

org.aoju.bus.health.common.mac.SmcUtils

public class SmcUtils
extends Object

Provides access to SMC calls on OS X

Since:

JDK 1.8+

Version:

5.8.2

Author:

Kimi Liu

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	SmcUtils.SMCKeyData Holds the return value of SMC query.
static class	SmcUtils.SMCKeyDataKeyInfo Holds the return value of SMC KeyInfo query.
static class	SmcUtils.SMCKeyDataPLimitData Holds the return value of SMC pLimit query.
static class	SmcUtils.SMCKeyDataVers Holds the return value of SMC version query.
static class	SmcUtils.SMCVal Holds an SMC value

Field Summary

Fields

Modifier and Type	Field and Description
static int	KERNEL_INDEX_SMC
static byte	SMC_CMD_READ_BYTES
static byte	SMC_CMD_READ_KEYINFO
static String	SMC_KEY_CPU_TEMP
static String	SMC_KEY_CPU_VOLTAGE
static String	SMC_KEY_FAN_NUM
static String	SMC_KEY_FAN_SPEED

Method Summary

Modifier and Type	Method and Description
static int	smcCall(com.sun.jna.platform.mac.IOKit.IOConnect conn, int index, SmcUtils.SMCKeyData inputStructure, SmcUtils.SMCKeyData outputStructure) Call SMC
static int	smcClose(com.sun.jna.platform.mac.IOKit.IOConnect conn) Close connection to SMC.
static double	smcGetFloat(com.sun.jna.platform.mac.IOKit.IOConnect conn, String key) Get a value from SMC which is in a floating point datatype (SP78, FPE2, FLT)
static int	smcGetKeyInfo(com.sun.jna.platform.mac.IOKit.IOConnect conn, SmcUtils.SMCKeyData inputStructure, SmcUtils.SMCKeyData outputStructure) Get cached keyInfo if it exists, or generate new keyInfo
static long	smcGetLong(com.sun.jna.platform.mac.IOKit.IOConnect conn, String key) Get a 64-bit integer value from SMC
static com.sun.jna.platform.mac.IOKit.IOConnect	smcOpen() Open a connection to SMC.
static int	smcReadKey(com.sun.jna.platform.mac.IOKit.IOConnect conn, String key, SmcUtils.SMCVal val) Read a key from SMC

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

SMC_KEY_FAN_NUM

public static final String SMC_KEY_FAN_NUM

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Constant Field Values

SMC_KEY_FAN_SPEED

public static final String SMC_KEY_FAN_SPEED

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Constant Field Values

SMC_KEY_CPU_TEMP

public static final String SMC_KEY_CPU_TEMP

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Constant Field Values

SMC_KEY_CPU_VOLTAGE

public static final String SMC_KEY_CPU_VOLTAGE

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Constant Field Values

SMC_CMD_READ_BYTES

public static final byte SMC_CMD_READ_BYTES

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Constant Field Values

SMC_CMD_READ_KEYINFO

public static final byte SMC_CMD_READ_KEYINFO

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Constant Field Values

KERNEL_INDEX_SMC

public static final int KERNEL_INDEX_SMC

See Also:

Constant Field Values

Method Detail

smcOpen

public static com.sun.jna.platform.mac.IOKit.IOConnect smcOpen()

Open a connection to SMC.

Returns:

The connection if successful, null if failure

smcClose

public static int smcClose(com.sun.jna.platform.mac.IOKit.IOConnect conn)

Close connection to SMC.

Parameters:

conn - The connection

Returns:

0 if successful, nonzero if failure

smcGetFloat

public static double smcGetFloat(com.sun.jna.platform.mac.IOKit.IOConnect conn,
                                 String key)

Get a value from SMC which is in a floating point datatype (SP78, FPE2, FLT)

Parameters:

conn - The connection

key - The key to retrieve

Returns:

Double representing the value

smcGetLong

public static long smcGetLong(com.sun.jna.platform.mac.IOKit.IOConnect conn,
                              String key)

Get a 64-bit integer value from SMC

Parameters:

conn - The connection

key - The key to retrieve

Returns:

Long representing the value

smcGetKeyInfo

public static int smcGetKeyInfo(com.sun.jna.platform.mac.IOKit.IOConnect conn,
                                SmcUtils.SMCKeyData inputStructure,
                                SmcUtils.SMCKeyData outputStructure)

Get cached keyInfo if it exists, or generate new keyInfo

Parameters:

conn - The connection

inputStructure - Key data input

outputStructure - Key data output

Returns:

0 if successful, nonzero if failure

smcReadKey

public static int smcReadKey(com.sun.jna.platform.mac.IOKit.IOConnect conn,
                             String key,
                             SmcUtils.SMCVal val)

Read a key from SMC

Parameters:

conn - The connection

key - Key to read

val - Structure to receive the result

Returns:

0 if successful, nonzero if failure

smcCall

public static int smcCall(com.sun.jna.platform.mac.IOKit.IOConnect conn,
                          int index,
                          SmcUtils.SMCKeyData inputStructure,
                          SmcUtils.SMCKeyData outputStructure)

Call SMC

Parameters:

conn - The connection

index - Kernel index

inputStructure - Key data input

outputStructure - Key data output

Returns:

0 if successful, nonzero if failure