| // Copyright 2018 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. |
| |
| //go:build dragonfly || freebsd || linux || netbsd || openbsd |
| |
| package poll |
| |
| import ( |
| "syscall" |
| "unsafe" |
| ) |
| |
| func writev(fd int, iovecs []syscall.Iovec) (uintptr, error) { |
| var ( |
| r uintptr |
| e syscall.Errno |
| ) |
| for { |
| r, _, e = syscall.Syscall(syscall.SYS_WRITEV, uintptr(fd), uintptr(unsafe.Pointer(&iovecs[0])), uintptr(len(iovecs))) |
| if e != syscall.EINTR { |
| break |
| } |
| } |
| if e != 0 { |
| return r, e |
| } |
| return r, nil |
| } |