github.com/FISCO-BCOS/crypto@v0.0.0-20200202032121-bd8ab0b5d4f1/internal/poll/fd_writev_unix.go (about)

     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  // +build dragonfly freebsd linux netbsd openbsd
     6  
     7  package poll
     8  
     9  import (
    10  	"syscall"
    11  	"unsafe"
    12  )
    13  
    14  func writev(fd int, iovecs []syscall.Iovec) (uintptr, error) {
    15  	r, _, e := syscall.Syscall(syscall.SYS_WRITEV, uintptr(fd), uintptr(unsafe.Pointer(&iovecs[0])), uintptr(len(iovecs)))
    16  	if e != 0 {
    17  		return r, syscall.Errno(e)
    18  	}
    19  	return r, nil
    20  }