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StructPollfd

public final class StructPollfd
extends Object

java.lang.Object
↳	android.system.StructPollfd

Used as an in/out parameter to Os#poll. Corresponds to C's struct pollfd from <poll.h>.

Summary

Fields
`public short`	`events` The events we're interested in.
`public FileDescriptor`	`fd` The file descriptor to poll.
`public short`	`revents` The events that actually happened.
`public Object`	`userData` A non-standard extension that lets callers conveniently map back to the object their fd belongs to.

Public constructors
`StructPollfd()`

Public methods
`String`	`toString()` Returns a string representation of the object.

Inherited methods

From class


        
          java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long timeout, int nanos)` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed.
`final void`	`wait(long timeout)` Causes the current thread to wait until either another thread invokes the `notify()` method or the `notifyAll()` method for this object, or a specified amount of time has elapsed.
`final void`	`wait()` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.

Fields

events

public short events

The events we're interested in. POLLIN corresponds to being in select(2)'s read fd set, POLLOUT to the write fd set.

fd

public FileDescriptor fd

The file descriptor to poll.

revents

public short revents

The events that actually happened.

userData

public Object userData

A non-standard extension that lets callers conveniently map back to the object their fd belongs to. This is used by Selector, for example, to associate each FileDescriptor with the corresponding SelectionKey.

Public constructors

StructPollfd

public StructPollfd ()

Public methods

toString

public String toString ()

Returns a string representation of the object. In general, the toString method returns a string that "textually represents" this object. The result should be a concise but informative representation that is easy for a person to read. It is recommended that all subclasses override this method.

The toString method for class Object returns a string consisting of the name of the class of which the object is an instance, the at-sign character `@', and the unsigned hexadecimal representation of the hash code of the object. In other words, this method returns a string equal to the value of:

 getClass().getName() + '@' + Integer.toHexString(hashCode())

Returns
`String`	a string representation of the object.

Classes

Exceptions

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StructPollfd

Summary

Fields

Public constructors

Public methods

Inherited methods

Fields

events

fd

revents

userData

Public constructors

StructPollfd

Public methods

toString