Source file src/internal/poll/fd_writev_unix.go

Documentation: internal/poll

     1  // Copyright 2018 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  //go:build dragonfly || freebsd || linux || netbsd || openbsd
     6  // +build dragonfly freebsd linux netbsd openbsd
     7  
     8  package poll
     9  
    10  import (
    11  	"syscall"
    12  	"unsafe"
    13  )
    14  
    15  func writev(fd int, iovecs []syscall.Iovec) (uintptr, error) {
    16  	var (
    17  		r uintptr
    18  		e syscall.Errno
    19  	)
    20  	for {
    21  		r, _, e = syscall.Syscall(syscall.SYS_WRITEV, uintptr(fd), uintptr(unsafe.Pointer(&iovecs[0])), uintptr(len(iovecs)))
    22  		if e != syscall.EINTR {
    23  			break
    24  		}
    25  	}
    26  	if e != 0 {
    27  		return r, e
    28  	}
    29  	return r, nil
    30  }
    31  

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