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Showing content from http://java-native-access.github.io/jna/5.17.0/javadoc/com/sun/jna/platform/mac/IOKit.html below:

IOKit (JNA API)

Alle Superschnittstellen:

Library

The I/O Kit framework implements non-kernel access to I/O Kit objects (drivers and nubs) through the device-interface mechanism.

• Verschachtelte Klassen - Übersicht

  Verschachtelte Klassen

  static class 

  For an application to communicate with a device, the first thing it must do is create a connection between itself and the in-kernel object representing the device.

  static class 

  An IOKit iterator handle.

  static class 

  IOKitLib implements non-kernel task access to common IOKit object types - IORegistryEntry, IOService, IOIterator etc.

  static class 

  The base class for all objects in the registry.

  static class 

  The base class for most I/O Kit families, devices, and drivers.

• Feldübersicht

  Felder

  static final double

  static final double

  static final int

  static final int

  static final int

  Return value when attempting parent or child in registry and they do not exist

• Methodenübersicht

  Create a matching dictionary that specifies an IOService match based on BSD device name.

  Returns the next object in an iteration.

  int

  Returns the mach port used to initiate communication with IOKit.

  boolean

  Performs an OSDynamicCast operation on an IOKit object.

  int

  Releases an object handle previously returned by IOKitLib.

  Returns a blob of Power Source information in an opaque CFTypeRef.

  Returns a CFArray of Power Source handles, each of type CFTypeRef.

  Returns a CFDictionary with readable information about the specific power source.

  double

  Returns the estimated seconds remaining until all power sources (battery and/or UPS's) are empty.

  int

  Create a CF dictionary representation of a registry entry's property table.

  Create a CF representation of a registry entry's property.

  int

  Returns the first child of a registry entry in a plane.

  int

  Returns an iterator over a registry entry’s child entries in a plane.

  int

  Returns a name assigned to a registry entry.

  int

  Returns the first parent of a registry entry in a plane.

  int

  Returns an ID for the registry entry that is global to all tasks.

  Create a CF representation of a registry entry's property.

  Return a handle to the registry root.

  int

  Close a connection to an IOService and destroy the connect handle.

  int

  Returns the busyState of an IOService.

  Look up a registered IOService object that matches a matching dictionary.

  int

  Look up registered IOService objects that match a matching dictionary.

  Create a matching dictionary that specifies an IOService class match.

  Create a matching dictionary that specifies an IOService name match.

  int

  A request to create a connection to an IOService.

• Felddetails
  • INSTANCE static final IOKit INSTANCE
  • kIORegistryIterateRecursively

    static final int kIORegistryIterateRecursively

    Siehe auch:

    • Konstantenfeldwerte

  • kIORegistryIterateParents

    static final int kIORegistryIterateParents

    Siehe auch:

    • Konstantenfeldwerte

  • kIOReturnNoDevice

    static final int kIOReturnNoDevice

    Return value when attempting parent or child in registry and they do not exist

    Siehe auch:

    • Konstantenfeldwerte

  • kIOPSTimeRemainingUnlimited

    static final double kIOPSTimeRemainingUnlimited

    Siehe auch:

    • Konstantenfeldwerte

  • kIOPSTimeRemainingUnknown

    static final double kIOPSTimeRemainingUnknown

    Siehe auch:

    • Konstantenfeldwerte

• Methodendetails
  • IOMasterPort

    Returns the mach port used to initiate communication with IOKit.

    Parameter:

    bootstrapPort - Pass 0 for the default.

    port - A pointer to the master port is returned. Multiple calls to IOMasterPort will not result in leaking ports (each call to IOMasterPort adds another send right to the port) but it is considered good programming practice to deallocate the port when you are finished with it using SystemB.mach_port_deallocate(int, int).

    Gibt zurück:

    0 if successful, otherwise a kern_return_t error code.

  • IOServiceMatching

    Create a matching dictionary that specifies an IOService class match.

    Parameter:

    name - The class name. Class matching is successful on IOServices of this class or any subclass.

    Gibt zurück:

    The matching dictionary created, is returned on success, or null on failure.

    The dictionary is commonly passed to IOServiceGetMatchingServices(int, com.sun.jna.platform.mac.CoreFoundation.CFDictionaryRef, com.sun.jna.ptr.PointerByReference) which will consume a reference, otherwise it should be released with CoreFoundation.CFRelease(com.sun.jna.platform.mac.CoreFoundation.CFTypeRef) by the caller.

  • IOServiceNameMatching

    Create a matching dictionary that specifies an IOService name match.

    Parameter:

    name - The IOService name.

    Gibt zurück:

    The matching dictionary created, is returned on success, or null on failure.

    The dictionary is commonly passed to IOServiceGetMatchingServices(int, com.sun.jna.platform.mac.CoreFoundation.CFDictionaryRef, com.sun.jna.ptr.PointerByReference) which will consume a reference, otherwise it should be released with CoreFoundation.CFRelease(com.sun.jna.platform.mac.CoreFoundation.CFTypeRef) by the caller.

  • IOBSDNameMatching

    Create a matching dictionary that specifies an IOService match based on BSD device name.

    Parameter:

    masterPort - The master port obtained from IOMasterPort(int, com.sun.jna.ptr.IntByReference).

    options - No options are currently defined.

    bsdName - The BSD name.

    Gibt zurück:

    The matching dictionary created, is returned on success, or null on failure.

    The dictionary is commonly passed to IOServiceGetMatchingServices(int, com.sun.jna.platform.mac.CoreFoundation.CFDictionaryRef, com.sun.jna.ptr.PointerByReference) which will consume a reference, otherwise it should be released with CoreFoundation.CFRelease(com.sun.jna.platform.mac.CoreFoundation.CFTypeRef) by the caller.

  • IOServiceGetMatchingService

    Look up a registered IOService object that matches a matching dictionary.

    Parameter:

    masterPort - The master port obtained from IOMasterPort(int, com.sun.jna.ptr.IntByReference).

    matchingDictionary - A CF dictionary containing matching information, of which one reference is always consumed by this function. IOKitLib can construct matching dictionaries for common criteria with helper functions such as IOServiceMatching(java.lang.String), IOServiceNameMatching(java.lang.String), and IOBSDNameMatching(int, int, java.lang.String).

    Gibt zurück:

    The first service matched is returned on success.

    The service must be released by the caller.

  • IOServiceGetMatchingServices

    Look up registered IOService objects that match a matching dictionary.

    Parameter:

    masterPort - The master port obtained from IOMasterPort(int, com.sun.jna.ptr.IntByReference).

    matchingDictionary - A CF dictionary containing matching information, of which one reference is always consumed by this function. IOKitLib can construct matching dictionaries for common criteria with helper functions such as IOServiceMatching(java.lang.String), IOServiceNameMatching(java.lang.String), and IOBSDNameMatching(int, int, java.lang.String).

    iterator - An iterator handle is returned on success, and should be released by the caller when the iteration is finished.

    Gibt zurück:

    0 if successful, otherwise a kern_return_t error code.

  • IOIteratorNext

    Returns the next object in an iteration.

    Parameter:

    iterator - An IOKit iterator handle.

    Gibt zurück:

    If the iterator handle is valid, the next element in the iteration is returned, otherwise zero is returned. The element should be released by the caller when it is finished.

  • IORegistryEntryCreateCFProperty

    Create a CF representation of a registry entry's property.

    Parameter:

    entry - The registry entry handle whose property to copy.

    key - A CFString specifying the property name.

    allocator - The CF allocator to use when creating the CF container.

    options - No options are currently defined.

    Gibt zurück:

    A CF container is created and returned the caller on success.

    The caller should release with CoreFoundation.CFRelease(com.sun.jna.platform.mac.CoreFoundation.CFTypeRef).

  • IORegistryEntryCreateCFProperties

    Create a CF dictionary representation of a registry entry's property table.

    Parameter:

    entry - The registry entry handle whose property table to copy.

    properties - A CFDictionary is created and returned the caller on success. The caller should release with CFRelease.

    allocator - The CF allocator to use when creating the CF containers.

    options - No options are currently defined.

    Gibt zurück:

    0 if successful, otherwise a kern_return_t error code.

  • IORegistryEntrySearchCFProperty

    Create a CF representation of a registry entry's property.

    Parameter:

    entry - The registry entry at which to start the search.

    plane - The name of an existing registry plane. Plane names are defined in IOKitKeys.h, for example, kIOServicePlane.

    key - A CFString specifying the property name.

    allocator - The CF allocator to use when creating the CF container.

    options - kIORegistryIterateRecursively may be set to recurse automatically into the registry hierarchy. Without this option, this method degenerates into the standard IORegistryEntryCreateCFProperty(com.sun.jna.platform.mac.IOKit.IORegistryEntry, com.sun.jna.platform.mac.CoreFoundation.CFStringRef, com.sun.jna.platform.mac.CoreFoundation.CFAllocatorRef, int) call. kIORegistryIterateParents may be set to iterate the parents of the entry, in place of the children.

    Gibt zurück:

    A CF container is created and returned the caller on success. The caller should release with CFRelease.

  • IORegistryEntryGetRegistryEntryID

    Returns an ID for the registry entry that is global to all tasks.

    Parameter:

    entry - The registry entry handle whose ID to look up.

    id - The resulting ID.

    Gibt zurück:

    0 if successful, otherwise a kern_return_t error code.

  • IORegistryEntryGetName

    Returns a name assigned to a registry entry.

    Parameter:

    entry - The registry entry handle whose name to look up.

    name - The caller's buffer to receive the name. This must be a 128-byte buffer.

    Gibt zurück:

    0 if successful, otherwise a kern_return_t error code.

  • IORegistryEntryGetChildIterator

    Returns an iterator over a registry entry’s child entries in a plane.

    Parameter:

    entry - The registry entry whose children to iterate over.

    plane - The name of an existing registry plane. Plane names are defined in IOKitKeys.h, for example, kIOServicePlane.

    iter - The created iterator over the children of the entry, on success. The iterator must be released when the iteration is finished.

    Gibt zurück:

    0 if successful, otherwise a kern_return_t error code.

  • IORegistryEntryGetChildEntry

    Returns the first child of a registry entry in a plane.

    Parameter:

    entry - The registry entry whose child to look up.

    plane - The name of an existing registry plane. Plane names are defined in IOKitKeys.h, for example, kIOServicePlane.

    child - The first child of the registry entry, on success. The child must be released by the caller.

    Gibt zurück:

    0 if successful, otherwise a kern_return_t error code.

  • IORegistryEntryGetParentEntry

    Returns the first parent of a registry entry in a plane.

    Parameter:

    entry - The registry entry whose parent to look up.

    plane - The name of an existing registry plane. Plane names are defined in IOKitKeys.h, for example, kIOServicePlane.

    parent - The first parent of the registry entry, on success. The parent must be released by the caller.

    Gibt zurück:

    0 if successful, otherwise a kern_return_t error code.

  • IORegistryGetRootEntry

    Return a handle to the registry root.

    Parameter:

    masterPort - The master port obtained from IOMasterPort(int, com.sun.jna.ptr.IntByReference).

    Gibt zurück:

    A handle to the IORegistryEntry root instance, to be released with IOObjectRelease(com.sun.jna.platform.mac.IOKit.IOObject) by the caller, or 0 on failure.

  • IOObjectConformsTo

    Performs an OSDynamicCast operation on an IOKit object.

    Parameter:

    object - An IOKit object.

    className - The name of the class.

    Gibt zurück:

    If the object handle is valid, and represents an object in the kernel that dynamic casts to the class true is returned, otherwise false.

  • IOObjectRelease

    Releases an object handle previously returned by IOKitLib.

    Parameter:

    object - The IOKit object to release.

    Gibt zurück:

    0 if successful, otherwise a kern_return_t error code.

  • IOServiceOpen

    A request to create a connection to an IOService.

    Parameter:

    service - The IOService object to open a connection to, usually obtained via the IOServiceGetMatchingServices(int, com.sun.jna.platform.mac.CoreFoundation.CFDictionaryRef, com.sun.jna.ptr.PointerByReference) API.

    owningTask - The mach task requesting the connection.

    type - A constant specifying the type of connection to be created, interpreted only by the IOService's family.

    connect - An io_connect_t handle is returned on success, to be used with the IOConnectXXX APIs. It should be destroyed with IOServiceClose(com.sun.jna.platform.mac.IOKit.IOConnect).

    Gibt zurück:

    A return code generated by IOService::newUserClient.

  • IOServiceGetBusyState

    Returns the busyState of an IOService.

    Parameter:

    service - The IOService whose busyState to return.

    busyState - The busyState count is returned.

    Gibt zurück:

    0 if successful, otherwise a kern_return_t error code.

  • IOServiceClose

    Close a connection to an IOService and destroy the connect handle.

    Parameter:

    connect - The connect handle created by IOServiceOpen. It will be destroyed by this function, and should not be released with IOObjectRelease.

    Gibt zurück:

    0 if successful, otherwise a kern_return_t error code.

  • IOPSCopyPowerSourcesInfo

    Returns a blob of Power Source information in an opaque CFTypeRef.

    Gibt zurück:

    null if errors were encountered, a CoreFoundation.CFTypeRef otherwise.

    Caller must CoreFoundation.CFRelease(com.sun.jna.platform.mac.CoreFoundation.CFTypeRef) the return value when done accessing it.

  • IOPSCopyPowerSourcesList

    Returns a CFArray of Power Source handles, each of type CFTypeRef.

    Parameter:

    blob - Takes the CoreFoundation.CFTypeRef returned by IOPSCopyPowerSourcesInfo()

    Gibt zurück:

    null if errors were encountered, otherwise a CFArray of CoreFoundation.CFTypeRefs.

    Caller must CoreFoundation.CFRelease(com.sun.jna.platform.mac.CoreFoundation.CFTypeRef) the returned CoreFoundation.CFArrayRef.

  • IOPSGetPowerSourceDescription

    Returns a CFDictionary with readable information about the specific power source.

    Parameter:

    blob - the CoreFoundation.CFTypeRef returned by IOPSCopyPowerSourcesInfo()

    ps - One of the CoreFoundation.CFTypeRefs in the CFArray returned by IOPSCopyPowerSourcesList(com.sun.jna.platform.mac.CoreFoundation.CFTypeRef).

    Gibt zurück:

    null if an error was encountered, otherwise a CFDictionary.

    Caller should NOT release the returned CFDictionary - it will be released as part of the CoreFoundation.CFTypeRef returned by IOPSCopyPowerSourcesInfo().

  • IOPSGetTimeRemainingEstimate

    double IOPSGetTimeRemainingEstimate()

    Returns the estimated seconds remaining until all power sources (battery and/or UPS's) are empty.

    Gibt zurück:

    Returns kIOPSTimeRemainingUnknown if the OS cannot determine the time remaining.

    Returns kIOPSTimeRemainingUnlimited if the system has an unlimited power source.

    Otherwise returns a positive number indicating the time remaining in seconds until all power sources are depleted.

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