← Back to branch summary

~nskaggs/+junk/xenial-test

« back to all changes in this revision

Viewing changes to src/github.com/gabriel-samfira/sys/windows/svc/event.go

  • Committer: Nicholas Skaggs
  • Date: 2016-10-24 20:56:05 UTC
  • Revision ID: nicholas.skaggs@canonical.com-20161024205605-z8lta0uvuhtxwzwl
Initi with beta15

Show diffs side-by-side

added added

removed removed

Lines of Context:
src/github.com/gabriel-samfira/sys/windows/svc/event.go
 
1
// Copyright 2012 The Go Authors. All rights reserved.
 
2
// Use of this source code is governed by a BSD-style
 
3
// license that can be found in the LICENSE file.
 
4
 
 
5
// +build windows
 
6
 
 
7
package svc
 
8
 
 
9
import (
 
10
        "errors"
 
11
 
 
12
        "github.com/gabriel-samfira/sys/windows"
 
13
)
 
14
 
 
15
// event represents auto-reset, initially non-signaled Windows event.
 
16
// It is used to communicate between go and asm parts of this package.
 
17
type event struct {
 
18
        h windows.Handle
 
19
}
 
20
 
 
21
func newEvent() (*event, error) {
 
22
        h, err := windows.CreateEvent(nil, 0, 0, nil)
 
23
        if err != nil {
 
24
                return nil, err
 
25
        }
 
26
        return &event{h: h}, nil
 
27
}
 
28
 
 
29
func (e *event) Close() error {
 
30
        return windows.CloseHandle(e.h)
 
31
}
 
32
 
 
33
func (e *event) Set() error {
 
34
        return windows.SetEvent(e.h)
 
35
}
 
36
 
 
37
func (e *event) Wait() error {
 
38
        s, err := windows.WaitForSingleObject(e.h, windows.INFINITE)
 
39
        switch s {
 
40
        case windows.WAIT_OBJECT_0:
 
41
                break
 
42
        case windows.WAIT_FAILED:
 
43
                return err
 
44
        default:
 
45
                return errors.New("unexpected result from WaitForSingleObject")
 
46
        }
 
47
        return nil
 
48
}