# Print output for @column tags ?>
Developers

- Design
- Develop
- Distribute

Developer Console

## Most visited

## Recently visited

## Results for

Summary: Fields | Ctors | Methods | Inherited Methods

# 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.

Full name *
Email address *
Company / developer name
One of your Play Store app URLs *
Which best describes your business:*
Apps
Games
Apps & Games
*
*