jdk.nio.channels.spi.SelectorProvider
Service-provider class for selectors and selectable channels.
A selector provider is a concrete subclass of this class that has a zero-argument constructor and implements the abstract methods specified below. A given invocation of the Java virtual machine maintains a single system-wide default provider instance, which is returned by the provider method. The first invocation of that method will locate the default provider as specified below.
The system-wide default provider is used by the static open methods of the DatagramChannel, Pipe, Selector, ServerSocketChannel, and SocketChannel classes. It is also used by the System.inheritedChannel() method. A program may make use of a provider other than the default provider by instantiating that provider and then directly invoking the open methods defined in this class.
All of the methods in this class are safe for use by multiple concurrent threads.
Service-provider class for selectors and selectable channels. A selector provider is a concrete subclass of this class that has a zero-argument constructor and implements the abstract methods specified below. A given invocation of the Java virtual machine maintains a single system-wide default provider instance, which is returned by the provider method. The first invocation of that method will locate the default provider as specified below. The system-wide default provider is used by the static open methods of the DatagramChannel, Pipe, Selector, ServerSocketChannel, and SocketChannel classes. It is also used by the System.inheritedChannel() method. A program may make use of a provider other than the default provider by instantiating that provider and then directly invoking the open methods defined in this class. All of the methods in this class are safe for use by multiple concurrent threads.
*providerclj
(*provider)Returns the system-wide default selector provider for this invocation of the Java virtual machine.
The first invocation of this method locates the default provider object as follows:
If the system property
java.nio.channels.spi.SelectorProvider is defined then it is taken to be the fully-qualified name of a concrete provider class. The class is loaded and instantiated; if this process fails then an unspecified error is thrown.
If a provider class has been installed in a jar file that is
visible to the system class loader, and that jar file contains a provider-configuration file named java.nio.channels.spi.SelectorProvider in the resource directory META-INF/services, then the first class name specified in that file is taken. The class is loaded and instantiated; if this process fails then an unspecified error is thrown.
Finally, if no provider has been specified by any of the above
means then the system-default provider class is instantiated and the result is returned.
Subsequent invocations of this method return the provider that was returned by the first invocation.
returns: The system-wide default selector provider - java.nio.channels.spi.SelectorProvider
Returns the system-wide default selector provider for this invocation of
the Java virtual machine.
The first invocation of this method locates the default provider
object as follows:
If the system property
java.nio.channels.spi.SelectorProvider is defined then it is
taken to be the fully-qualified name of a concrete provider class.
The class is loaded and instantiated; if this process fails then an
unspecified error is thrown.
If a provider class has been installed in a jar file that is
visible to the system class loader, and that jar file contains a
provider-configuration file named
java.nio.channels.spi.SelectorProvider in the resource
directory META-INF/services, then the first class name
specified in that file is taken. The class is loaded and
instantiated; if this process fails then an unspecified error is
thrown.
Finally, if no provider has been specified by any of the above
means then the system-default provider class is instantiated and the
result is returned.
Subsequent invocations of this method return the provider that was
returned by the first invocation.
returns: The system-wide default selector provider - `java.nio.channels.spi.SelectorProvider`inherited-channelclj
(inherited-channel this)Returns the channel inherited from the entity that created this Java virtual machine.
On many operating systems a process, such as a Java virtual machine, can be started in a manner that allows the process to inherit a channel from the entity that created the process. The manner in which this is done is system dependent, as are the possible entities to which the channel may be connected. For example, on UNIX systems, the Internet services daemon (inetd) is used to start programs to service requests when a request arrives on an associated network port. In this example, the process that is started, inherits a channel representing a network socket.
In cases where the inherited channel represents a network socket then the Channel type returned by this method is determined as follows:
If the inherited channel represents a stream-oriented connected socket then a SocketChannel is returned. The socket channel is, at least initially, in blocking mode, bound to a socket address, and connected to a peer.
If the inherited channel represents a stream-oriented listening socket then a ServerSocketChannel is returned. The server-socket channel is, at least initially, in blocking mode, and bound to a socket address.
If the inherited channel is a datagram-oriented socket then a DatagramChannel is returned. The datagram channel is, at least initially, in blocking mode, and bound to a socket address.
In addition to the network-oriented channels described, this method may return other kinds of channels in the future.
The first invocation of this method creates the channel that is returned. Subsequent invocations of this method return the same channel.
returns: The inherited channel, if any, otherwise null. - java.nio.channels.Channel
throws: java.io.IOException - If an I/O error occurs
Returns the channel inherited from the entity that created this Java virtual machine. On many operating systems a process, such as a Java virtual machine, can be started in a manner that allows the process to inherit a channel from the entity that created the process. The manner in which this is done is system dependent, as are the possible entities to which the channel may be connected. For example, on UNIX systems, the Internet services daemon (inetd) is used to start programs to service requests when a request arrives on an associated network port. In this example, the process that is started, inherits a channel representing a network socket. In cases where the inherited channel represents a network socket then the Channel type returned by this method is determined as follows: If the inherited channel represents a stream-oriented connected socket then a SocketChannel is returned. The socket channel is, at least initially, in blocking mode, bound to a socket address, and connected to a peer. If the inherited channel represents a stream-oriented listening socket then a ServerSocketChannel is returned. The server-socket channel is, at least initially, in blocking mode, and bound to a socket address. If the inherited channel is a datagram-oriented socket then a DatagramChannel is returned. The datagram channel is, at least initially, in blocking mode, and bound to a socket address. In addition to the network-oriented channels described, this method may return other kinds of channels in the future. The first invocation of this method creates the channel that is returned. Subsequent invocations of this method return the same channel. returns: The inherited channel, if any, otherwise null. - `java.nio.channels.Channel` throws: java.io.IOException - If an I/O error occurs
open-datagram-channelclj
(open-datagram-channel this)(open-datagram-channel this family)Opens a datagram channel.
family - The protocol family - java.net.ProtocolFamily
returns: A new datagram channel - java.nio.channels.DatagramChannel
throws: java.lang.UnsupportedOperationException - If the specified protocol family is not supported
Opens a datagram channel. family - The protocol family - `java.net.ProtocolFamily` returns: A new datagram channel - `java.nio.channels.DatagramChannel` throws: java.lang.UnsupportedOperationException - If the specified protocol family is not supported
open-pipeclj
(open-pipe this)Opens a pipe.
returns: The new pipe - java.nio.channels.Pipe
throws: java.io.IOException - If an I/O error occurs
Opens a pipe. returns: The new pipe - `java.nio.channels.Pipe` throws: java.io.IOException - If an I/O error occurs
open-selectorclj
(open-selector this)Opens a selector.
returns: The new selector - java.nio.channels.spi.AbstractSelector
throws: java.io.IOException - If an I/O error occurs
Opens a selector. returns: The new selector - `java.nio.channels.spi.AbstractSelector` throws: java.io.IOException - If an I/O error occurs
open-server-socket-channelclj
(open-server-socket-channel this)Opens a server-socket channel.
returns: The new channel - java.nio.channels.ServerSocketChannel
throws: java.io.IOException - If an I/O error occurs
Opens a server-socket channel. returns: The new channel - `java.nio.channels.ServerSocketChannel` throws: java.io.IOException - If an I/O error occurs
open-socket-channelclj
(open-socket-channel this)Opens a socket channel.
returns: The new channel - java.nio.channels.SocketChannel
throws: java.io.IOException - If an I/O error occurs
Opens a socket channel. returns: The new channel - `java.nio.channels.SocketChannel` throws: java.io.IOException - If an I/O error occurs
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