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The following blocking operations are fiber friendly, meaning the fiber will park when the socket is not ready for I/O:
| API | Methods | Notes |
|---|---|---|
| java.nio.channels.SocketChannel | read, write, close | |
| socket adaptor: read, write, close | ||
| java.nio.channels.ServerSocketChannel | accept, close | |
| socket adaptor: accept, close | ||
| java.nio.channels.DatagramChannel | read/receive, close | |
| java.nio.channels.Pipe.SourceChannel | read, close | |
| java.nio.channels.Pipe.SinkChannel | write, close | |
java.net.Socket | read, write, close | |
| java.net.ServerSocket | accept, close |
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The following blocking operations are not currently fiber friendly; these methods may pin the carrier thread:
| API | Methods | Notes |
|---|---|---|
| java.nio.channels.DatagramChannel | socket adaptor: receive | |
| java.net.DatagramSocket | receive | |
| Thread.interrupt | If |
| a thread is blocked in an I/O operation on an InterruptibleChannel then |
| the channel is closed. The locking to support this is not yet fiber friendly so Thread.interrupt may pin the carrier thread |
| while waiting for the blocking operations on the channel |
| to abort. |
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