github.com/moqsien/xraycore@v1.8.5/common/buf/readv_unix.go (about)

     1  //go:build illumos
     2  // +build illumos
     3  
     4  package buf
     5  
     6  import "golang.org/x/sys/unix"
     7  
     8  type unixReader struct {
     9  	iovs [][]byte
    10  }
    11  
    12  func (r *unixReader) Init(bs []*Buffer) {
    13  	iovs := r.iovs
    14  	if iovs == nil {
    15  		iovs = make([][]byte, 0, len(bs))
    16  	}
    17  	for _, b := range bs {
    18  		iovs = append(iovs, b.v)
    19  	}
    20  	r.iovs = iovs
    21  }
    22  
    23  func (r *unixReader) Read(fd uintptr) int32 {
    24  	n, e := unix.Readv(int(fd), r.iovs)
    25  	if e != nil {
    26  		return -1
    27  	}
    28  	return int32(n)
    29  }
    30  
    31  func (r *unixReader) Clear() {
    32  	r.iovs = r.iovs[:0]
    33  }
    34  
    35  func newMultiReader() multiReader {
    36  	return &unixReader{}
    37  }