asio_event.pony

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
type AsioEventID is Pointer[AsioEvent] tag

trait tag AsioEventNotify
  be _event_notify(event: AsioEventID, flags: U32, arg: U32)

primitive AsioEvent
  """
  Functions for asynchronous event notification.
  """
  fun none(): AsioEventID =>
    """
    An empty event.
    """
    AsioEventID

  fun readable(flags: U32): Bool =>
    """
    Returns true if the flags contain the readable flag.
    """
    (flags and (1 << 0)) != 0

  fun writeable(flags: U32): Bool =>
    """
    Returns true if the flags contain the writeable flag.
    """
    (flags and (1 << 1)) != 0

  fun disposable(flags: U32): Bool =>
    """
    Returns true if the event should be disposed of.
    """
    flags == 0

  fun oneshotable(flags: U32): Bool =>
    """
    Returns true if the flags contain the oneshot flag.
    """
    (flags and (1 << 8)) != 0

  fun dispose(): U32 => 0

  fun read(): U32 => 1 << 0

  fun write(): U32 => 1 << 1

  fun timer(): U32 => 1 << 2

  fun signal(): U32 => 1 << 3

  fun read_write(): U32 => read() or write()

  fun oneshot(): U32 => 1 << 8

  fun read_write_oneshot(): U32 => read() or write() or oneshot()