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Added wrapper around goselect library.

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This simplifies handling of select syscall.
This commit is contained in:
Cristian Maglie
2016-11-14 00:33:28 +01:00
parent 152558831e
commit 6eedab17b4
2 changed files with 104 additions and 14 deletions
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17
serial_unix.go
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@@ -17,8 +17,6 @@ import (
"unsafe"
"go.bug.st/serial.v1/unixutils"
"github.com/creack/goselect"
)
type unixPort struct {
@@ -55,18 +53,9 @@ func (port *unixPort) Read(p []byte) (n int, err error) {
port.closeLock.RLock()
defer port.closeLock.RUnlock()
r := &goselect.FDSet{}
r.Set(uintptr(port.handle))
r.Set(uintptr(port.closeSignal.ReadFD()))
e := &goselect.FDSet{}
e.Set(uintptr(port.handle))
e.Set(uintptr(port.closeSignal.ReadFD()))
max := port.closeSignal.ReadFD()
if port.handle > max {
max = port.handle
}
if err = goselect.Select(max+1, r, nil, e, -1); err != nil {
fds := unixutils.NewFDSet(port.handle, port.closeSignal.ReadFD())
res, err := unixutils.Select(fds, nil, fds, -1)
if err != nil {
return 0, err
}
return syscall.Read(port.handle, p)