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 #ifndef __MT_EVENT_KERNEL__
26 #define __MT_EVENT_KERNEL__
27 
28 
29 namespace MT
30 {
31 	//
32 	//
33 	//
34 	class Event
35 	{
36 		::MW_HANDLE eventHandle;
37 
38 	public:
39 
40 		MT_NOCOPYABLE(Event);
41 
42 		Event()
43 		{
44 			static_assert(sizeof(Event) == sizeof(::MW_HANDLE), "sizeof(Event) is invalid");
45 			eventHandle = nullptr;
46 		}
47 
48 		Event(EventReset::Type resetType, bool initialState)
49 		{
50 			eventHandle = nullptr;
51 			Create(resetType, initialState);
52 		}
53 
54 		~Event()
55 		{
56 			CloseHandle(eventHandle);
57 			eventHandle = nullptr;
58 		}
59 
60 		void Create(EventReset::Type resetType, bool initialState)
61 		{
62 			if (eventHandle != nullptr)
63 			{
64 				CloseHandle(eventHandle);
65 			}
66 
67 			MW_BOOL bManualReset = (resetType == EventReset::AUTOMATIC) ? 0 : 1;
68 			MW_BOOL bInitialState = initialState ? 1 : 0;
69 			eventHandle = ::CreateEventW(nullptr, bManualReset, bInitialState, nullptr);
70 		}
71 
72 		void Signal()
73 		{
74 			SetEvent(eventHandle);
75 		}
76 
77 		void Reset()
78 		{
79 			ResetEvent(eventHandle);
80 		}
81 
82 		bool Wait(uint32 milliseconds)
83 		{
84 			MW_DWORD res = WaitForSingleObject(eventHandle, milliseconds);
85 			return (res == MW_WAIT_OBJECT_0);
86 		}
87 
88 	};
89 
90 }
91 
92 
93 #endif
94