[1963] | 1 | /* |
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| 2 | Bullet Continuous Collision Detection and Physics Library |
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| 3 | Copyright (c) 2003-2007 Erwin Coumans http://bulletphysics.com |
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| 4 | |
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| 5 | This software is provided 'as-is', without any express or implied warranty. |
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| 6 | In no event will the authors be held liable for any damages arising from the use of this software. |
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| 7 | Permission is granted to anyone to use this software for any purpose, |
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| 8 | including commercial applications, and to alter it and redistribute it freely, |
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| 9 | subject to the following restrictions: |
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| 10 | |
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| 11 | 1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required. |
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| 12 | 2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software. |
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| 13 | 3. This notice may not be removed or altered from any source distribution. |
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| 14 | */ |
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| 15 | |
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| 16 | |
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| 17 | #include "LinearMath/btScalar.h" |
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| 18 | #include "PlatformDefinitions.h" |
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| 19 | |
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| 20 | #ifdef USE_PTHREADS //platform specific defines are defined in PlatformDefinitions.h |
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| 21 | #include <pthread.h> |
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| 22 | #include <semaphore.h> |
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| 23 | |
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| 24 | #ifndef POSIX_THREAD_SUPPORT_H |
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| 25 | #define POSIX_THREAD_SUPPORT_H |
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| 26 | |
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| 27 | #include "LinearMath/btAlignedObjectArray.h" |
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| 28 | |
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| 29 | #include "btThreadSupportInterface.h" |
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| 30 | |
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| 31 | |
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| 32 | typedef void (*PosixThreadFunc)(void* userPtr,void* lsMemory); |
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| 33 | typedef void* (*PosixlsMemorySetupFunc)(); |
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| 34 | |
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| 35 | // PosixThreadSupport helps to initialize/shutdown libspe2, start/stop SPU tasks and communication |
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| 36 | class PosixThreadSupport : public btThreadSupportInterface |
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| 37 | { |
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| 38 | public: |
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| 39 | typedef enum sStatus { |
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| 40 | STATUS_BUSY, |
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| 41 | STATUS_READY, |
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| 42 | STATUS_FINISHED |
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| 43 | } Status; |
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| 44 | |
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| 45 | // placeholder, until libspe2 support is there |
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| 46 | struct btSpuStatus |
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| 47 | { |
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| 48 | uint32_t m_taskId; |
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| 49 | uint32_t m_commandId; |
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| 50 | uint32_t m_status; |
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| 51 | |
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| 52 | PosixThreadFunc m_userThreadFunc; |
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| 53 | void* m_userPtr; //for taskDesc etc |
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| 54 | void* m_lsMemory; //initialized using PosixLocalStoreMemorySetupFunc |
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| 55 | |
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| 56 | pthread_t thread; |
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| 57 | sem_t startSemaphore; |
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| 58 | |
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| 59 | unsigned long threadUsed; |
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| 60 | }; |
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| 61 | private: |
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| 62 | |
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| 63 | btAlignedObjectArray<btSpuStatus> m_activeSpuStatus; |
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| 64 | public: |
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| 65 | ///Setup and initialize SPU/CELL/Libspe2 |
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| 66 | |
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| 67 | |
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| 68 | |
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| 69 | struct ThreadConstructionInfo |
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| 70 | { |
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| 71 | ThreadConstructionInfo(char* uniqueName, |
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| 72 | PosixThreadFunc userThreadFunc, |
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| 73 | PosixlsMemorySetupFunc lsMemoryFunc, |
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| 74 | int numThreads=1, |
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| 75 | int threadStackSize=65535 |
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| 76 | ) |
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| 77 | :m_uniqueName(uniqueName), |
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| 78 | m_userThreadFunc(userThreadFunc), |
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| 79 | m_lsMemoryFunc(lsMemoryFunc), |
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| 80 | m_numThreads(numThreads), |
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| 81 | m_threadStackSize(threadStackSize) |
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| 82 | { |
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| 83 | |
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| 84 | } |
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| 85 | |
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| 86 | char* m_uniqueName; |
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| 87 | PosixThreadFunc m_userThreadFunc; |
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| 88 | PosixlsMemorySetupFunc m_lsMemoryFunc; |
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| 89 | int m_numThreads; |
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| 90 | int m_threadStackSize; |
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| 91 | |
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| 92 | }; |
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| 93 | |
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| 94 | PosixThreadSupport(ThreadConstructionInfo& threadConstructionInfo); |
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| 95 | |
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| 96 | ///cleanup/shutdown Libspe2 |
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| 97 | virtual ~PosixThreadSupport(); |
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| 98 | |
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| 99 | void startThreads(ThreadConstructionInfo& threadInfo); |
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| 100 | |
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| 101 | |
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| 102 | ///send messages to SPUs |
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| 103 | virtual void sendRequest(uint32_t uiCommand, uint32_t uiArgument0, uint32_t uiArgument1); |
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| 104 | |
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| 105 | ///check for messages from SPUs |
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| 106 | virtual void waitForResponse(unsigned int *puiArgument0, unsigned int *puiArgument1); |
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| 107 | |
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| 108 | ///start the spus (can be called at the beginning of each frame, to make sure that the right SPU program is loaded) |
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| 109 | virtual void startSPU(); |
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| 110 | |
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| 111 | ///tell the task scheduler we are done with the SPU tasks |
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| 112 | virtual void stopSPU(); |
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| 113 | |
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| 114 | virtual void setNumTasks(int numTasks) |
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| 115 | { |
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| 116 | } |
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| 117 | |
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| 118 | }; |
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| 119 | |
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| 120 | #endif // POSIX_THREAD_SUPPORT_H |
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| 121 | |
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| 122 | #endif // USE_PTHREADS |
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