49 lines
979 B
Go
49 lines
979 B
Go
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// Copyright 2012 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build windows
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package svc
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import (
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"errors"
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"golang.org/x/sys/windows"
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)
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// event represents auto-reset, initially non-signaled Windows event.
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// It is used to communicate between go and asm parts of this package.
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type event struct {
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h windows.Handle
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}
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func newEvent() (*event, error) {
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h, err := windows.CreateEvent(nil, 0, 0, nil)
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if err != nil {
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return nil, err
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}
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return &event{h: h}, nil
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}
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func (e *event) Close() error {
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return windows.CloseHandle(e.h)
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}
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func (e *event) Set() error {
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return windows.SetEvent(e.h)
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}
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func (e *event) Wait() error {
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s, err := windows.WaitForSingleObject(e.h, windows.INFINITE)
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switch s {
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case windows.WAIT_OBJECT_0:
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break
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case windows.WAIT_FAILED:
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return err
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default:
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return errors.New("unexpected result from WaitForSingleObject")
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}
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return nil
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}
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