mirror of https://github.com/XTLS/Xray-core
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
47 lines
823 B
47 lines
823 B
// +build !windows |
|
// +build !wasm |
|
// +build !illumos |
|
|
|
package buf |
|
|
|
import ( |
|
"syscall" |
|
"unsafe" |
|
) |
|
|
|
type posixReader struct { |
|
iovecs []syscall.Iovec |
|
} |
|
|
|
func (r *posixReader) Init(bs []*Buffer) { |
|
iovecs := r.iovecs |
|
if iovecs == nil { |
|
iovecs = make([]syscall.Iovec, 0, len(bs)) |
|
} |
|
for idx, b := range bs { |
|
iovecs = append(iovecs, syscall.Iovec{ |
|
Base: &(b.v[0]), |
|
}) |
|
iovecs[idx].SetLen(int(Size)) |
|
} |
|
r.iovecs = iovecs |
|
} |
|
|
|
func (r *posixReader) Read(fd uintptr) int32 { |
|
n, _, e := syscall.Syscall(syscall.SYS_READV, fd, uintptr(unsafe.Pointer(&r.iovecs[0])), uintptr(len(r.iovecs))) |
|
if e != 0 { |
|
return -1 |
|
} |
|
return int32(n) |
|
} |
|
|
|
func (r *posixReader) Clear() { |
|
for idx := range r.iovecs { |
|
r.iovecs[idx].Base = nil |
|
} |
|
r.iovecs = r.iovecs[:0] |
|
} |
|
|
|
func newMultiReader() multiReader { |
|
return &posixReader{} |
|
}
|
|
|