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 
26 namespace MT
27 {
28 	namespace internal
29 	{
30 		// Prime numbers for linear congruential generator seed
31 		static const uint32 primeNumbers[] = {
32 			128473, 135349, 159499, 173839, 209213, 241603, 292709, 314723,
33 			343943, 389299, 419473, 465169, 518327, 649921, 748271, 851087,
34 			862171, 974551, 1002973, 1034639, 1096289, 1153123, 1251037, 1299269,
35 			1272941, 1252151, 1231091, 1206761, 1185469, 1169933, 1141351, 1011583 };
36 
37 		uint32 GetPrimeNumber(uint32 index)
38 		{
39 			return primeNumbers[index % MT_ARRAY_SIZE(primeNumbers)];
40 		}
41 
42 
43 
44 		ThreadContext::ThreadContext()
45 			: lastActiveFiberContext(nullptr)
46 			, taskScheduler(nullptr)
47 			, hasNewTasksEvent(EventReset::AUTOMATIC, true)
48 			, state(ThreadState::ALIVE)
49 			, workerIndex(0)
50 		{
51 			 descBuffer = Memory::Alloc( sizeof(internal::GroupedTask) * TASK_BUFFER_CAPACITY );
52 		}
53 
54 		ThreadContext::~ThreadContext()
55 		{
56 			Memory::Free(descBuffer);
57 			descBuffer = nullptr;
58 		}
59 
60 		void ThreadContext::SetThreadIndex(uint32 threadIndex)
61 		{
62 			workerIndex = threadIndex;
63 			random.SetSeed( GetPrimeNumber(threadIndex) );
64 		}
65 
66 #ifdef MT_INSTRUMENTED_BUILD
67 
68 		void ThreadContext::NotifyTaskFinished(const internal::TaskDesc & desc)
69 		{
70 			if (IProfilerEventListener* eventListener = taskScheduler->GetProfilerEventListener())
71 			{
72 				eventListener->OnTaskFinished(desc.debugColor, desc.debugID);
73 			}
74 		}
75 
76 		void ThreadContext::NotifyTaskResumed(const internal::TaskDesc & desc)
77 		{
78 			if (IProfilerEventListener* eventListener = taskScheduler->GetProfilerEventListener())
79 			{
80 				eventListener->OnTaskResumed(desc.debugColor, desc.debugID);
81 			}
82 
83 		}
84 
85 		void ThreadContext::NotifyTaskYielded(const internal::TaskDesc & desc)
86 		{
87 			if (IProfilerEventListener* eventListener = taskScheduler->GetProfilerEventListener())
88 			{
89 				eventListener->OnTaskYielded(desc.debugColor, desc.debugID);
90 			}
91 		}
92 
93 		void ThreadContext::NotifyThreadCreate(uint32 threadIndex)
94 		{
95 			if (IProfilerEventListener* eventListener = taskScheduler->GetProfilerEventListener())
96 			{
97 				eventListener->OnThreadCreated(threadIndex);
98 			}
99 		}
100 
101 		void ThreadContext::NotifyThreadStart(uint32 threadIndex)
102 		{
103 			if (IProfilerEventListener* eventListener = taskScheduler->GetProfilerEventListener())
104 			{
105 				eventListener->OnThreadStarted(threadIndex);
106 			}
107 		}
108 
109 		void ThreadContext::NotifyThreadStop(uint32 threadIndex)
110 		{
111 			if (IProfilerEventListener* eventListener = taskScheduler->GetProfilerEventListener())
112 			{
113 				eventListener->OnThreadStoped(threadIndex);
114 			}
115 		}
116 
117 
118 		void ThreadContext::NotifyThreadIdleBegin(uint32 threadIndex)
119 		{
120 			if (IProfilerEventListener* eventListener = taskScheduler->GetProfilerEventListener())
121 			{
122 				eventListener->OnThreadIdleBegin(threadIndex);
123 			}
124 		}
125 
126 		void ThreadContext::NotifyThreadIdleEnd(uint32 threadIndex)
127 		{
128 			if (IProfilerEventListener* eventListener = taskScheduler->GetProfilerEventListener())
129 			{
130 				eventListener->OnThreadIdleEnd(threadIndex);
131 			}
132 		}
133 
134 #endif
135 
136 	}
137 
138 }
139