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 #include <MTScheduler.h>
24 
25 namespace MT
26 {
27 	namespace internal
28 	{
29 		// Prime numbers for linear congruential generator seed
30 		static const uint32 primeNumbers[] = {
31 			128473, 135349, 159499, 173839, 209213, 241603, 292709, 314723,
32 			343943, 389299, 419473, 465169, 518327, 649921, 748271, 851087,
33 			862171, 974551, 1002973, 1034639, 1096289, 1153123, 1251037, 1299269,
34 			1272941, 1252151, 1231091, 1206761, 1185469, 1169933, 1141351, 1011583 };
35 
36 		uint32 GetPrimeNumber(uint32 index)
37 		{
38 			return primeNumbers[index % MT_ARRAY_SIZE(primeNumbers)];
39 		}
40 
41 
42 
43 		ThreadContext::ThreadContext()
44 			: lastActiveFiberContext(nullptr)
45 			, taskScheduler(nullptr)
46 			, hasNewTasksEvent(EventReset::AUTOMATIC, true)
47 			, state(ThreadState::ALIVE)
48 			, workerIndex(0)
49 		{
50 			 descBuffer = Memory::Alloc( sizeof(internal::GroupedTask) * TASK_BUFFER_CAPACITY );
51 		}
52 
53 		ThreadContext::~ThreadContext()
54 		{
55 			Memory::Free(descBuffer);
56 			descBuffer = nullptr;
57 		}
58 
59 		void ThreadContext::SetThreadIndex(uint32 threadIndex)
60 		{
61 			workerIndex = threadIndex;
62 			random.SetSeed( GetPrimeNumber(threadIndex) );
63 		}
64 
65 #ifdef MT_INSTRUMENTED_BUILD
66 
67 		void ThreadContext::NotifyTaskBeginExecute(MT::Color::Type debugColor, const mt_char* debugID)
68 		{
69 			if (IProfilerEventListener* eventListener = taskScheduler->GetProfilerEventListener())
70 			{
71 				eventListener->OnTaskBeginExecute(debugColor, debugID);
72 			}
73 		}
74 
75 		void ThreadContext::NotifyTaskEndExecute(MT::Color::Type debugColor, const mt_char* debugID)
76 		{
77 			if (IProfilerEventListener* eventListener = taskScheduler->GetProfilerEventListener())
78 			{
79 				eventListener->OnTaskEndExecute(debugColor, debugID);
80 			}
81 		}
82 
83 		void ThreadContext::NotifyThreadCreate(uint32 threadIndex)
84 		{
85 			if (IProfilerEventListener* eventListener = taskScheduler->GetProfilerEventListener())
86 			{
87 				eventListener->OnThreadCreated(threadIndex);
88 			}
89 		}
90 
91 		void ThreadContext::NotifyThreadStart(uint32 threadIndex)
92 		{
93 			if (IProfilerEventListener* eventListener = taskScheduler->GetProfilerEventListener())
94 			{
95 				eventListener->OnThreadStarted(threadIndex);
96 			}
97 		}
98 
99 		void ThreadContext::NotifyThreadStop(uint32 threadIndex)
100 		{
101 			if (IProfilerEventListener* eventListener = taskScheduler->GetProfilerEventListener())
102 			{
103 				eventListener->OnThreadStoped(threadIndex);
104 			}
105 		}
106 
107 		void ThreadContext::NotifyThreadIdleBegin(uint32 threadIndex)
108 		{
109 			if (IProfilerEventListener* eventListener = taskScheduler->GetProfilerEventListener())
110 			{
111 				eventListener->OnThreadIdleBegin(threadIndex);
112 			}
113 		}
114 
115 		void ThreadContext::NotifyThreadIdleEnd(uint32 threadIndex)
116 		{
117 			if (IProfilerEventListener* eventListener = taskScheduler->GetProfilerEventListener())
118 			{
119 				eventListener->OnThreadIdleEnd(threadIndex);
120 			}
121 		}
122 
123 #endif
124 
125 	}
126 
127 }
128