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* See LICENSE.md for licensing information.

* Based on libusb <http://libusb.info/>:

package org.usb4java;

/**

* File descriptor for polling.

* @author Klaus Reimer (k@ailis.de)

public final class Pollfd

{

/** There is data to read */

public static final int POLLIN = 1;

/** Writing now will not block. */

public static final int POLLOUT = 4;

/** The native pointer to the pollfd structure. */

private long pollfdPointer;

/**

* Package-private constructor to prevent manual instantiation. Structures are

* always created by JNI.

Pollfd()

{

// Empty

}

/**

* Returns the native pointer to the pollfd structure.

* @return The native pointer to the pollfd structure.

public long getPointer()

{

return this.pollfdPointer;

}

@Override

public int hashCode()

{

final int prime = 31;

int result = 1;

result = (prime * result)

+ (int) (this.pollfdPointer ^ (this.pollfdPointer >>> 32));

return result;

}

@Override

public boolean equals(final Object obj)

{

if (this == obj)

{

return true;

}

if (obj == null)

{

return false;

}

if (this.getClass() != obj.getClass())

{

return false;

}

final Pollfd other = (Pollfd) obj;

if (this.pollfdPointer != other.pollfdPointer)

{

return false;

}

return true;

}

@Override

public String toString()

{

return String.format("libusb pollfd 0x%x", this.pollfdPointer);

}

/**

* Returns the numeric file descriptor.

* @return The numeric file descriptor.

public native byte fd();

/**

* Returns the event flags to poll.

* {@link #POLLIN} indicates that you should monitor this file descriptor for becoming ready to read from, and

* {@link #POLLOUT} indicates that you should monitor this file descriptor for non-blocking write readiness.

* @return The event flags to poll.

public native short events();

}

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