1 // The MIT License (MIT)
2 //
3 // 	Copyright (c) 2015 Sergey Makeev, Vadim Slyusarev
4 //
5 // 	Permission is hereby granted, free of charge, to any person obtaining a copy
6 // 	of this software and associated documentation files (the "Software"), to deal
7 // 	in the Software without restriction, including without limitation the rights
8 // 	to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
9 // 	copies of the Software, and to permit persons to whom the Software is
10 // 	furnished to do so, subject to the following conditions:
11 //
12 //  The above copyright notice and this permission notice shall be included in
13 // 	all copies or substantial portions of the Software.
14 //
15 // 	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 // 	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 // 	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 // 	AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 // 	LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 // 	OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
21 // 	THE SOFTWARE.
22 
23 #pragma once
24 
25 namespace MT
26 {
27 	//
28 	//
29 	//
30 	class Event
31 	{
32 		::HANDLE eventHandle;
33 
34 	private:
35 
36 		Event(const Event&) {}
37 		void operator=(const Event&) {}
38 
39 	public:
40 
41 		Event()
42 		{
43 			static_assert(sizeof(Event) == sizeof(::HANDLE), "sizeof(Event) is invalid");
44 			eventHandle = nullptr;
45 		}
46 
47 		Event(EventReset::Type resetType, bool initialState)
48 		{
49 			eventHandle = nullptr;
50 			Create(resetType, initialState);
51 		}
52 
53 		~Event()
54 		{
55 			CloseHandle(eventHandle);
56 			eventHandle = nullptr;
57 		}
58 
59 		void Create(EventReset::Type resetType, bool initialState)
60 		{
61 			if (eventHandle != nullptr)
62 			{
63 				CloseHandle(eventHandle);
64 			}
65 
66 			BOOL bManualReset = (resetType == EventReset::AUTOMATIC) ? FALSE : TRUE;
67 			BOOL bInitialState = initialState ? TRUE : FALSE;
68 			eventHandle = ::CreateEvent(nullptr, bManualReset, bInitialState, nullptr);
69 		}
70 
71 		void Signal()
72 		{
73 			SetEvent(eventHandle);
74 		}
75 
76 		void Reset()
77 		{
78 			ResetEvent(eventHandle);
79 		}
80 
81 		bool Wait(uint32 milliseconds)
82 		{
83 			DWORD res = WaitForSingleObject(eventHandle, milliseconds);
84 			return (res == WAIT_OBJECT_0);
85 		}
86 
87 	};
88 
89 }
90 
91 
92