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1 | // Created on: 2015-05-28 |
| 2 | // Created by: Denis BOGOLEPOV |
| 3 | // Copyright (c) 2015 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 | #ifndef _BVH_BuildQueue_Header |
| 17 | #define _BVH_BuildQueue_Header |
| 18 | |
| 19 | #include <BVH_Builder.hxx> |
| 20 | |
| 21 | #include <Standard_Mutex.hxx> |
| 22 | #include <NCollection_Sequence.hxx> |
| 23 | |
| 24 | //! Command-queue for parallel building of BVH nodes. |
| 25 | class BVH_BuildQueue |
| 26 | { |
| 27 | template <class T, int N> friend class BVH_QueueBuilder; |
| 28 | |
| 29 | public: |
| 30 | |
| 31 | //! Creates new BVH build queue. |
| 32 | BVH_BuildQueue() |
| 33 | : myNbThreads (0) |
| 34 | { |
| 35 | // |
| 36 | } |
| 37 | |
| 38 | //! Releases resources of BVH build queue. |
| 39 | ~BVH_BuildQueue() |
| 40 | { |
| 41 | // |
| 42 | } |
| 43 | |
| 44 | public: |
| 45 | |
| 46 | //! Returns current size of BVH build queue. |
| 47 | Standard_EXPORT Standard_Integer Size(); |
| 48 | |
| 49 | //! Enqueues new work-item onto BVH build queue. |
| 50 | Standard_EXPORT void Enqueue (const Standard_Integer& theNode); |
| 51 | |
| 52 | //! Fetches first work-item from BVH build queue. |
| 53 | Standard_EXPORT Standard_Integer Fetch (Standard_Boolean& wasBusy); |
| 54 | |
| 55 | //! Checks if there are active build threads. |
| 56 | Standard_Boolean HasBusyThreads() |
| 57 | { |
| 58 | return myNbThreads != 0; |
| 59 | } |
| 60 | |
| 61 | protected: |
| 62 | |
| 63 | //! Queue of BVH nodes to build. |
| 64 | NCollection_Sequence<Standard_Integer> myQueue; |
| 65 | |
| 66 | protected: |
| 67 | |
| 68 | //! Manages access serialization of working threads. |
| 69 | Standard_Mutex myMutex; |
| 70 | |
| 71 | //! Number of active build threads. |
| 72 | Standard_Integer myNbThreads; |
| 73 | }; |
| 74 | |
| 75 | #endif // _BVH_BuildQueue_Header |
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