1/*
2 * Copyright (C) 2011 Patrick Gansterer <paroga@paroga.com>
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
16 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
17 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
18 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
19 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
20 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 */
24
25#ifndef Win32Handle_h
26#define Win32Handle_h
27
28#include <memory>
29#include <windows.h>
30#include <wtf/Noncopyable.h>
31
32namespace WebCore {
33
34class Win32Handle {
35    WTF_MAKE_NONCOPYABLE(Win32Handle);
36public:
37    Win32Handle() : m_handle(INVALID_HANDLE_VALUE) { }
38    explicit Win32Handle(HANDLE handle) : m_handle(handle) { }
39
40    ~Win32Handle() { clear(); }
41
42    void clear()
43    {
44        if (!isValid())
45            return;
46        CloseHandle(m_handle);
47        m_handle = INVALID_HANDLE_VALUE;
48    }
49
50    bool isValid() const { return m_handle != INVALID_HANDLE_VALUE; }
51
52    HANDLE get() const { return m_handle; }
53    HANDLE release() { HANDLE ret = m_handle; m_handle = INVALID_HANDLE_VALUE; return ret; }
54
55    Win32Handle& operator=(HANDLE handle)
56    {
57        clear();
58        m_handle = handle;
59    }
60
61private:
62    HANDLE m_handle;
63};
64
65} // namespace WebCore
66
67#endif // Win32Handle_h
68