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IOTypes.h

Include Path:	<IOKit/IOTypes.h>
Path:	/System/Library/Frameworks/IOKit.framework/Versions/A/Headers/IOTypes.h
Includes:	<mach/message.h> <mach/vm_types.h> <IOKit/IOReturn.h> <stdbool.h> <libkern/OSTypes.h> <device/device_types.h>

Overview

This header contains standard types common to all of the I/O Kit.

Enumerations

Scale Factors

enum { 
    kNanosecondScale = 1, 
    kMicrosecondScale = 1000, 
    kMillisecondScale = 1000 * 1000, 
    kSecondScale = 1000 * 1000 * 1000, 
    kTickScale = (
        kSecondScale / 100) 
};

Constants

kNanosecondScale
Scale factor for nanosecond based times.

kMicrosecondScale
Scale factor for microsecond based times.

kMillisecondScale
Scale factor for millisecond based times.

kTickScale
Scale factor for the standard (100Hz) tick.

kSecondScale
Scale factor for second based times.

Discussion

Used when a scale_factor parameter is required to define a unit of time.

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Last Updated: 2008-03-11