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Diffstat (limited to 'gcc-4.8.1/libgo/go/net/sendfile_freebsd.go')
-rw-r--r--gcc-4.8.1/libgo/go/net/sendfile_freebsd.go105
1 files changed, 0 insertions, 105 deletions
diff --git a/gcc-4.8.1/libgo/go/net/sendfile_freebsd.go b/gcc-4.8.1/libgo/go/net/sendfile_freebsd.go
deleted file mode 100644
index 8008bc3b5..000000000
--- a/gcc-4.8.1/libgo/go/net/sendfile_freebsd.go
+++ /dev/null
@@ -1,105 +0,0 @@
-// Copyright 2011 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
-
-import (
- "io"
- "os"
- "syscall"
-)
-
-// maxSendfileSize is the largest chunk size we ask the kernel to copy
-// at a time.
-const maxSendfileSize int = 4 << 20
-
-// sendFile copies the contents of r to c using the sendfile
-// system call to minimize copies.
-//
-// if handled == true, sendFile returns the number of bytes copied and any
-// non-EOF error.
-//
-// if handled == false, sendFile performed no work.
-func sendFile(c *netFD, r io.Reader) (written int64, err error, handled bool) {
- // FreeBSD uses 0 as the "until EOF" value. If you pass in more bytes than the
- // file contains, it will loop back to the beginning ad nauseum until it's sent
- // exactly the number of bytes told to. As such, we need to know exactly how many
- // bytes to send.
- var remain int64 = 0
-
- lr, ok := r.(*io.LimitedReader)
- if ok {
- remain, r = lr.N, lr.R
- if remain <= 0 {
- return 0, nil, true
- }
- }
- f, ok := r.(*os.File)
- if !ok {
- return 0, nil, false
- }
-
- if remain == 0 {
- fi, err := f.Stat()
- if err != nil {
- return 0, err, false
- }
-
- remain = fi.Size()
- }
-
- // The other quirk with FreeBSD's sendfile implementation is that it doesn't
- // use the current position of the file -- if you pass it offset 0, it starts
- // from offset 0. There's no way to tell it "start from current position", so
- // we have to manage that explicitly.
- pos, err := f.Seek(0, os.SEEK_CUR)
- if err != nil {
- return 0, err, false
- }
-
- c.wio.Lock()
- defer c.wio.Unlock()
- if err := c.incref(false); err != nil {
- return 0, err, true
- }
- defer c.decref()
-
- dst := c.sysfd
- src := int(f.Fd())
- for remain > 0 {
- n := maxSendfileSize
- if int64(n) > remain {
- n = int(remain)
- }
- pos1 := pos
- n, err1 := syscall.Sendfile(dst, src, &pos1, n)
- if n > 0 {
- pos += int64(n)
- written += int64(n)
- remain -= int64(n)
- }
- if n == 0 && err1 == nil {
- break
- }
- if err1 == syscall.EAGAIN {
- if err1 = c.pollServer.WaitWrite(c); err1 == nil {
- continue
- }
- }
- if err1 == syscall.EINTR {
- continue
- }
- if err1 != nil {
- // This includes syscall.ENOSYS (no kernel
- // support) and syscall.EINVAL (fd types which
- // don't implement sendfile together)
- err = &OpError{"sendfile", c.net, c.raddr, err1}
- break
- }
- }
- if lr != nil {
- lr.N = remain
- }
- return written, err, written > 0
-}