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-rw-r--r--gcc-4.8.1/libgo/go/net/net.go415
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diff --git a/gcc-4.8.1/libgo/go/net/net.go b/gcc-4.8.1/libgo/go/net/net.go
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--- a/gcc-4.8.1/libgo/go/net/net.go
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@@ -1,415 +0,0 @@
-// Copyright 2009 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-/*
-Package net provides a portable interface for network I/O, including
-TCP/IP, UDP, domain name resolution, and Unix domain sockets.
-
-Although the package provides access to low-level networking
-primitives, most clients will need only the basic interface provided
-by the Dial, Listen, and Accept functions and the associated
-Conn and Listener interfaces. The crypto/tls package uses
-the same interfaces and similar Dial and Listen functions.
-
-The Dial function connects to a server:
-
- conn, err := net.Dial("tcp", "google.com:80")
- if err != nil {
- // handle error
- }
- fmt.Fprintf(conn, "GET / HTTP/1.0\r\n\r\n")
- status, err := bufio.NewReader(conn).ReadString('\n')
- // ...
-
-The Listen function creates servers:
-
- ln, err := net.Listen("tcp", ":8080")
- if err != nil {
- // handle error
- }
- for {
- conn, err := ln.Accept()
- if err != nil {
- // handle error
- continue
- }
- go handleConnection(conn)
- }
-*/
-package net
-
-// TODO(rsc):
-// support for raw ethernet sockets
-
-import (
- "errors"
- "io"
- "os"
- "sync"
- "syscall"
- "time"
-)
-
-// Addr represents a network end point address.
-type Addr interface {
- Network() string // name of the network
- String() string // string form of address
-}
-
-// Conn is a generic stream-oriented network connection.
-//
-// Multiple goroutines may invoke methods on a Conn simultaneously.
-type Conn interface {
- // Read reads data from the connection.
- // Read can be made to time out and return a Error with Timeout() == true
- // after a fixed time limit; see SetDeadline and SetReadDeadline.
- Read(b []byte) (n int, err error)
-
- // Write writes data to the connection.
- // Write can be made to time out and return a Error with Timeout() == true
- // after a fixed time limit; see SetDeadline and SetWriteDeadline.
- Write(b []byte) (n int, err error)
-
- // Close closes the connection.
- // Any blocked Read or Write operations will be unblocked and return errors.
- Close() error
-
- // LocalAddr returns the local network address.
- LocalAddr() Addr
-
- // RemoteAddr returns the remote network address.
- RemoteAddr() Addr
-
- // SetDeadline sets the read and write deadlines associated
- // with the connection. It is equivalent to calling both
- // SetReadDeadline and SetWriteDeadline.
- //
- // A deadline is an absolute time after which I/O operations
- // fail with a timeout (see type Error) instead of
- // blocking. The deadline applies to all future I/O, not just
- // the immediately following call to Read or Write.
- //
- // An idle timeout can be implemented by repeatedly extending
- // the deadline after successful Read or Write calls.
- //
- // A zero value for t means I/O operations will not time out.
- SetDeadline(t time.Time) error
-
- // SetReadDeadline sets the deadline for future Read calls.
- // A zero value for t means Read will not time out.
- SetReadDeadline(t time.Time) error
-
- // SetWriteDeadline sets the deadline for future Write calls.
- // Even if write times out, it may return n > 0, indicating that
- // some of the data was successfully written.
- // A zero value for t means Write will not time out.
- SetWriteDeadline(t time.Time) error
-}
-
-type conn struct {
- fd *netFD
-}
-
-func (c *conn) ok() bool { return c != nil && c.fd != nil }
-
-// Implementation of the Conn interface.
-
-// Read implements the Conn Read method.
-func (c *conn) Read(b []byte) (int, error) {
- if !c.ok() {
- return 0, syscall.EINVAL
- }
- return c.fd.Read(b)
-}
-
-// Write implements the Conn Write method.
-func (c *conn) Write(b []byte) (int, error) {
- if !c.ok() {
- return 0, syscall.EINVAL
- }
- return c.fd.Write(b)
-}
-
-// Close closes the connection.
-func (c *conn) Close() error {
- if !c.ok() {
- return syscall.EINVAL
- }
- return c.fd.Close()
-}
-
-// LocalAddr returns the local network address.
-func (c *conn) LocalAddr() Addr {
- if !c.ok() {
- return nil
- }
- return c.fd.laddr
-}
-
-// RemoteAddr returns the remote network address.
-func (c *conn) RemoteAddr() Addr {
- if !c.ok() {
- return nil
- }
- return c.fd.raddr
-}
-
-// SetDeadline implements the Conn SetDeadline method.
-func (c *conn) SetDeadline(t time.Time) error {
- if !c.ok() {
- return syscall.EINVAL
- }
- return setDeadline(c.fd, t)
-}
-
-// SetReadDeadline implements the Conn SetReadDeadline method.
-func (c *conn) SetReadDeadline(t time.Time) error {
- if !c.ok() {
- return syscall.EINVAL
- }
- return setReadDeadline(c.fd, t)
-}
-
-// SetWriteDeadline implements the Conn SetWriteDeadline method.
-func (c *conn) SetWriteDeadline(t time.Time) error {
- if !c.ok() {
- return syscall.EINVAL
- }
- return setWriteDeadline(c.fd, t)
-}
-
-// SetReadBuffer sets the size of the operating system's
-// receive buffer associated with the connection.
-func (c *conn) SetReadBuffer(bytes int) error {
- if !c.ok() {
- return syscall.EINVAL
- }
- return setReadBuffer(c.fd, bytes)
-}
-
-// SetWriteBuffer sets the size of the operating system's
-// transmit buffer associated with the connection.
-func (c *conn) SetWriteBuffer(bytes int) error {
- if !c.ok() {
- return syscall.EINVAL
- }
- return setWriteBuffer(c.fd, bytes)
-}
-
-// File sets the underlying os.File to blocking mode and returns a copy.
-// It is the caller's responsibility to close f when finished.
-// Closing c does not affect f, and closing f does not affect c.
-//
-// The returned os.File's file descriptor is different from the connection's.
-// Attempting to change properties of the original using this duplicate
-// may or may not have the desired effect.
-func (c *conn) File() (f *os.File, err error) { return c.fd.dup() }
-
-// An Error represents a network error.
-type Error interface {
- error
- Timeout() bool // Is the error a timeout?
- Temporary() bool // Is the error temporary?
-}
-
-// PacketConn is a generic packet-oriented network connection.
-//
-// Multiple goroutines may invoke methods on a PacketConn simultaneously.
-type PacketConn interface {
- // ReadFrom reads a packet from the connection,
- // copying the payload into b. It returns the number of
- // bytes copied into b and the return address that
- // was on the packet.
- // ReadFrom can be made to time out and return
- // an error with Timeout() == true after a fixed time limit;
- // see SetDeadline and SetReadDeadline.
- ReadFrom(b []byte) (n int, addr Addr, err error)
-
- // WriteTo writes a packet with payload b to addr.
- // WriteTo can be made to time out and return
- // an error with Timeout() == true after a fixed time limit;
- // see SetDeadline and SetWriteDeadline.
- // On packet-oriented connections, write timeouts are rare.
- WriteTo(b []byte, addr Addr) (n int, err error)
-
- // Close closes the connection.
- // Any blocked ReadFrom or WriteTo operations will be unblocked and return errors.
- Close() error
-
- // LocalAddr returns the local network address.
- LocalAddr() Addr
-
- // SetDeadline sets the read and write deadlines associated
- // with the connection.
- SetDeadline(t time.Time) error
-
- // SetReadDeadline sets the deadline for future Read calls.
- // If the deadline is reached, Read will fail with a timeout
- // (see type Error) instead of blocking.
- // A zero value for t means Read will not time out.
- SetReadDeadline(t time.Time) error
-
- // SetWriteDeadline sets the deadline for future Write calls.
- // If the deadline is reached, Write will fail with a timeout
- // (see type Error) instead of blocking.
- // A zero value for t means Write will not time out.
- // Even if write times out, it may return n > 0, indicating that
- // some of the data was successfully written.
- SetWriteDeadline(t time.Time) error
-}
-
-// A Listener is a generic network listener for stream-oriented protocols.
-//
-// Multiple goroutines may invoke methods on a Listener simultaneously.
-type Listener interface {
- // Accept waits for and returns the next connection to the listener.
- Accept() (c Conn, err error)
-
- // Close closes the listener.
- // Any blocked Accept operations will be unblocked and return errors.
- Close() error
-
- // Addr returns the listener's network address.
- Addr() Addr
-}
-
-var errMissingAddress = errors.New("missing address")
-
-type OpError struct {
- Op string
- Net string
- Addr Addr
- Err error
-}
-
-func (e *OpError) Error() string {
- if e == nil {
- return "<nil>"
- }
- s := e.Op
- if e.Net != "" {
- s += " " + e.Net
- }
- if e.Addr != nil {
- s += " " + e.Addr.String()
- }
- s += ": " + e.Err.Error()
- return s
-}
-
-type temporary interface {
- Temporary() bool
-}
-
-func (e *OpError) Temporary() bool {
- t, ok := e.Err.(temporary)
- return ok && t.Temporary()
-}
-
-var noDeadline = time.Time{}
-
-type timeout interface {
- Timeout() bool
-}
-
-func (e *OpError) Timeout() bool {
- t, ok := e.Err.(timeout)
- return ok && t.Timeout()
-}
-
-type timeoutError struct{}
-
-func (e *timeoutError) Error() string { return "i/o timeout" }
-func (e *timeoutError) Timeout() bool { return true }
-func (e *timeoutError) Temporary() bool { return true }
-
-var errTimeout error = &timeoutError{}
-
-var errClosing = errors.New("use of closed network connection")
-
-type AddrError struct {
- Err string
- Addr string
-}
-
-func (e *AddrError) Error() string {
- if e == nil {
- return "<nil>"
- }
- s := e.Err
- if e.Addr != "" {
- s += " " + e.Addr
- }
- return s
-}
-
-func (e *AddrError) Temporary() bool {
- return false
-}
-
-func (e *AddrError) Timeout() bool {
- return false
-}
-
-type UnknownNetworkError string
-
-func (e UnknownNetworkError) Error() string { return "unknown network " + string(e) }
-func (e UnknownNetworkError) Temporary() bool { return false }
-func (e UnknownNetworkError) Timeout() bool { return false }
-
-// DNSConfigError represents an error reading the machine's DNS configuration.
-type DNSConfigError struct {
- Err error
-}
-
-func (e *DNSConfigError) Error() string {
- return "error reading DNS config: " + e.Err.Error()
-}
-
-func (e *DNSConfigError) Timeout() bool { return false }
-func (e *DNSConfigError) Temporary() bool { return false }
-
-type writerOnly struct {
- io.Writer
-}
-
-// Fallback implementation of io.ReaderFrom's ReadFrom, when sendfile isn't
-// applicable.
-func genericReadFrom(w io.Writer, r io.Reader) (n int64, err error) {
- // Use wrapper to hide existing r.ReadFrom from io.Copy.
- return io.Copy(writerOnly{w}, r)
-}
-
-// deadline is an atomically-accessed number of nanoseconds since 1970
-// or 0, if no deadline is set.
-type deadline struct {
- sync.Mutex
- val int64
-}
-
-func (d *deadline) expired() bool {
- t := d.value()
- return t > 0 && time.Now().UnixNano() >= t
-}
-
-func (d *deadline) value() (v int64) {
- d.Lock()
- v = d.val
- d.Unlock()
- return
-}
-
-func (d *deadline) set(v int64) {
- d.Lock()
- d.val = v
- d.Unlock()
-}
-
-func (d *deadline) setTime(t time.Time) {
- if t.IsZero() {
- d.set(0)
- } else {
- d.set(t.UnixNano())
- }
-}