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1 | // Created on: 2015-05-29 |
2 | // Created by: Denis BOGOLEPOV |
3 | // Copyright (c) 2013-2014 OPEN CASCADE SAS |
4 | // |
5 | // This file is part of Open CASCADE Technology software library. |
6 | // |
7 | // This library is free software; you can redistribute it and/or modify it under |
8 | // the terms of the GNU Lesser General Public License version 2.1 as published |
9 | // by the Free Software Foundation, with special exception defined in the file |
10 | // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT |
11 | // distribution for complete text of the license and disclaimer of any warranty. |
12 | // |
13 | // Alternatively, this file may be used under the terms of Open CASCADE |
14 | // commercial license or contractual agreement. |
15 | |
16 | #include <BVH_BuildThread.hxx> |
17 | |
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18 | IMPLEMENT_STANDARD_RTTIEXT(BVH_BuildThread,Standard_Transient) |
19 | |
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20 | // ======================================================================= |
21 | // function : BVH_BuildThread |
22 | // purpose : Creates new BVH build thread |
23 | // ======================================================================= |
24 | BVH_BuildThread::BVH_BuildThread (BVH_BuildTool& theBuildTool, |
25 | BVH_BuildQueue& theBuildQueue) |
26 | : myBuildTool (theBuildTool), |
27 | myBuildQueue (theBuildQueue), |
28 | myWorkThread (threadFunction) |
29 | { |
30 | // |
31 | } |
32 | |
33 | // ======================================================================= |
34 | // function : execute |
35 | // purpose : Executes BVH build thread |
36 | // ======================================================================= |
37 | void BVH_BuildThread::execute() |
38 | { |
39 | for (Standard_Boolean wasBusy = Standard_False; /**/; /**/) |
40 | { |
41 | const Standard_Integer aNode = myBuildQueue.Fetch (wasBusy); |
42 | |
43 | if (aNode == -1) // queue is empty |
44 | { |
45 | if (!myBuildQueue.HasBusyThreads()) |
46 | { |
47 | break; // no active threads |
48 | } |
49 | } |
50 | else |
51 | { |
52 | myBuildTool.Perform (aNode); |
53 | } |
54 | } |
55 | } |
56 | |
57 | // ======================================================================= |
58 | // function : threadFunction |
59 | // purpose : Thread function for BVH build thread |
60 | // ======================================================================= |
61 | Standard_Address BVH_BuildThread::threadFunction (Standard_Address theData) |
62 | { |
63 | static_cast<BVH_BuildThread*> (theData)->execute(); |
64 | |
65 | return NULL; |
66 | } |