mirror of https://github.com/tidwall/evio.git
65 lines
1.5 KiB
Go
65 lines
1.5 KiB
Go
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package doppio
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import (
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"syscall"
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"time"
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)
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func (c *conn) addwrite() error {
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if c.writeon {
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return nil
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}
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c.writeon = true
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_, err := syscall.Kevent(c.p,
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[]syscall.Kevent_t{{Ident: uint64(c.fd),
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Flags: syscall.EV_ADD, Filter: syscall.EVFILT_WRITE}},
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nil, nil)
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return err
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}
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func (c *conn) delwrite() error {
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if !c.writeon {
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return nil
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}
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c.writeon = false
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_, err := syscall.Kevent(c.p,
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[]syscall.Kevent_t{{Ident: uint64(c.fd),
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Flags: syscall.EV_DELETE, Filter: syscall.EVFILT_WRITE}},
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nil, nil)
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return err
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}
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func makepoll() (p int, err error) {
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return syscall.Kqueue()
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}
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func addread(p, fd int) error {
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_, err := syscall.Kevent(p,
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[]syscall.Kevent_t{{Ident: uint64(fd),
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Flags: syscall.EV_ADD, Filter: syscall.EVFILT_READ}},
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nil, nil)
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return err
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}
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func makeevents(n int) interface{} {
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return make([]syscall.Kevent_t, n)
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}
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func wait(p int, evs interface{}, timeout time.Duration) (n int, err error) {
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if timeout < 0 {
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timeout = 0
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}
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ts := syscall.NsecToTimespec(int64(timeout))
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return syscall.Kevent(p, nil, evs.([]syscall.Kevent_t), &ts)
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}
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func getfd(evs interface{}, i int) int {
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return int(evs.([]syscall.Kevent_t)[i].Ident)
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}
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func setkeepalive(fd, secs int) error {
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if err := syscall.SetsockoptInt(fd, syscall.SOL_SOCKET, 0x8, 1); err != nil {
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return err
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}
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switch err := syscall.SetsockoptInt(fd, syscall.IPPROTO_TCP, 0x101, secs); err {
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case nil, syscall.ENOPROTOOPT: // OS X 10.7 and earlier don't support this option
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default:
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return err
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}
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return syscall.SetsockoptInt(fd, syscall.IPPROTO_TCP, syscall.TCP_KEEPALIVE, secs)
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}
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