1 /* 2 * Copyright (C) 2011 Patrick Gansterer <paroga (at) 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 32 namespace WebCore { 33 34 class Win32Handle { 35 WTF_MAKE_NONCOPYABLE(Win32Handle); 36 public: 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 61 private: 62 HANDLE m_handle; 63 }; 64 65 } // namespace WebCore 66 67 #endif // Win32Handle_h 68
