Package oshi.util.platform.mac
Class SmcUtil
java.lang.Object
oshi.util.platform.mac.SmcUtil
@ThreadSafe public final class SmcUtil extends java.lang.Object
Provides access to SMC calls on macOS
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Nested Class Summary
Nested Classes Modifier and Type Class Description static class
SmcUtil.SMCKeyData
Holds the return value of SMC query.static class
SmcUtil.SMCKeyDataKeyInfo
Holds the return value of SMC KeyInfo query.static class
SmcUtil.SMCKeyDataPLimitData
Holds the return value of SMC pLimit query.static class
SmcUtil.SMCKeyDataVers
Holds the return value of SMC version query.static class
SmcUtil.SMCVal
Holds an SMC value -
Field Summary
Fields Modifier and Type Field Description static int
KERNEL_INDEX_SMC
static byte
SMC_CMD_READ_BYTES
static byte
SMC_CMD_READ_KEYINFO
static java.lang.String
SMC_KEY_CPU_TEMP
static java.lang.String
SMC_KEY_CPU_VOLTAGE
static java.lang.String
SMC_KEY_FAN_NUM
static java.lang.String
SMC_KEY_FAN_SPEED
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Method Summary
Modifier and Type Method Description static int
smcCall(com.sun.jna.platform.mac.IOKit.IOConnect conn, int index, SmcUtil.SMCKeyData inputStructure, SmcUtil.SMCKeyData outputStructure)
Call SMCstatic 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, java.lang.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, SmcUtil.SMCKeyData inputStructure, SmcUtil.SMCKeyData outputStructure)
Get cached keyInfo if it exists, or generate new keyInfostatic long
smcGetLong(com.sun.jna.platform.mac.IOKit.IOConnect conn, java.lang.String key)
Get a 64-bit integer value from SMCstatic com.sun.jna.platform.mac.IOKit.IOConnect
smcOpen()
Open a connection to SMC.static int
smcReadKey(com.sun.jna.platform.mac.IOKit.IOConnect conn, java.lang.String key, SmcUtil.SMCVal val)
Read a key from SMC
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Field Details
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SMC_KEY_FAN_NUM
public static final java.lang.String SMC_KEY_FAN_NUM- See Also:
- Constant Field Values
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SMC_KEY_FAN_SPEED
public static final java.lang.String SMC_KEY_FAN_SPEED- See Also:
- Constant Field Values
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SMC_KEY_CPU_TEMP
public static final java.lang.String SMC_KEY_CPU_TEMP- See Also:
- Constant Field Values
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SMC_KEY_CPU_VOLTAGE
public static final java.lang.String SMC_KEY_CPU_VOLTAGE- See Also:
- Constant Field Values
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SMC_CMD_READ_BYTES
public static final byte SMC_CMD_READ_BYTES- See Also:
- Constant Field Values
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SMC_CMD_READ_KEYINFO
public static final byte SMC_CMD_READ_KEYINFO- See Also:
- Constant Field Values
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KERNEL_INDEX_SMC
public static final int KERNEL_INDEX_SMC- See Also:
- Constant Field Values
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Method Details
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smcOpen
public static com.sun.jna.platform.mac.IOKit.IOConnect smcOpen()Open a connection to SMC.- Returns:
- The connection if successful, null if failure
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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
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smcGetFloat
public static double smcGetFloat(com.sun.jna.platform.mac.IOKit.IOConnect conn, java.lang.String key)Get a value from SMC which is in a floating point datatype (SP78, FPE2, FLT)- Parameters:
conn
- The connectionkey
- The key to retrieve- Returns:
- Double representing the value
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smcGetLong
public static long smcGetLong(com.sun.jna.platform.mac.IOKit.IOConnect conn, java.lang.String key)Get a 64-bit integer value from SMC- Parameters:
conn
- The connectionkey
- The key to retrieve- Returns:
- Long representing the value
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smcGetKeyInfo
public static int smcGetKeyInfo(com.sun.jna.platform.mac.IOKit.IOConnect conn, SmcUtil.SMCKeyData inputStructure, SmcUtil.SMCKeyData outputStructure)Get cached keyInfo if it exists, or generate new keyInfo- Parameters:
conn
- The connectioninputStructure
- Key data inputoutputStructure
- Key data output- Returns:
- 0 if successful, nonzero if failure
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smcReadKey
public static int smcReadKey(com.sun.jna.platform.mac.IOKit.IOConnect conn, java.lang.String key, SmcUtil.SMCVal val)Read a key from SMC- Parameters:
conn
- The connectionkey
- Key to readval
- Structure to receive the result- Returns:
- 0 if successful, nonzero if failure
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smcCall
public static int smcCall(com.sun.jna.platform.mac.IOKit.IOConnect conn, int index, SmcUtil.SMCKeyData inputStructure, SmcUtil.SMCKeyData outputStructure)Call SMC- Parameters:
conn
- The connectionindex
- Kernel indexinputStructure
- Key data inputoutputStructure
- Key data output- Returns:
- 0 if successful, nonzero if failure
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