1 | #include "SimHost.h" |
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2 | #include <osg/Notify> |
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3 | |
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4 | #include <OpenThreads/Thread> |
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5 | |
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6 | // System includes |
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7 | #include <cassert> |
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8 | |
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9 | #ifdef _WIN32 |
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10 | #include <process.h> |
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11 | #define getpid() _getpid() |
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12 | #else |
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13 | #include <unistd.h> |
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14 | #endif |
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15 | |
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16 | // App includes |
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17 | |
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18 | |
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19 | SimHost::SimHost() |
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20 | { |
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21 | OSG_ALWAYS<<"SimHost instantiated."<<std::endl; |
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22 | numberofChannels = 6; |
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23 | } |
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24 | |
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25 | SimHost::~SimHost() |
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26 | { |
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27 | //_channelWorker.clear(); |
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28 | } |
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29 | |
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30 | void SimHost::initialize() |
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31 | { |
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32 | done = false; |
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33 | int numThreads = numberofChannels+1; // #channels + one main thread |
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34 | OpenThreads::Barrier syncBarrier; |
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35 | |
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36 | // Create IG Connectors |
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37 | OSG_ALWAYS<<"Creating IG Connectors..."<<std::endl; |
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38 | for(int i=0; i<numberofChannels; ++i) |
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39 | { |
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40 | osg::ref_ptr<ThreadedWorker> threadObject = new ThreadedWorker(); |
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41 | osg::ref_ptr<IGConnector> IGCon = new IGConnector(numberofChannels, _frameBarrier); |
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42 | threadObject->setThreadWorker(IGCon); |
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43 | _threadObjects.push_back(threadObject); |
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44 | _IGConnectors.push_back(IGCon); |
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45 | } |
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46 | OSG_ALWAYS<<"...done."<<std::endl; |
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47 | |
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48 | // Setup Threading |
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49 | OSG_ALWAYS << "Root Thread ID: " << getpid() << std::endl; |
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50 | |
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51 | OSG_ALWAYS<<OpenThreads::GetNumberOfProcessors()<<" CPUs found, using "<<(numThreads)<<" of them concurrently."<<std::endl; |
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52 | OpenThreads::Thread::SetConcurrency( numThreads ); // Only supported by pthread implementation, otherwise ignored |
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53 | |
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54 | OpenThreads::Thread::Init(); |
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55 | |
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56 | } |
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57 | |
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58 | void SimHost::run() |
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59 | { |
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60 | // Launch threads |
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61 | for(int i=0;i<static_cast<int>(_threadObjects.size());++i) |
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62 | { |
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63 | int status; |
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64 | |
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65 | //thread->setStackSize(1024*256); |
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66 | status = _threadObjects[i]->start(); |
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67 | assert(status == 0); |
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68 | } |
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69 | |
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70 | // Enter the SimHost main loop |
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71 | while(!done) |
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72 | { |
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73 | // Wait until all Channels have sent an SOF packet |
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74 | _frameBarrier.block(numberofChannels+1); // Sync the main and all IG threads. |
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75 | OSG_ALWAYS<<"All IGConnectors have recieved a SOF packet: Starting new Frame"<<std::endl; |
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76 | } |
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77 | |
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78 | // Signal threads to finish |
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79 | for(int i=0;i<static_cast<int>(_threadObjects.size());++i) |
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80 | { |
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81 | //_threadObjects[i]->setDone(true); // non blocking |
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82 | _threadObjects[i]->cancel(); // Blocking |
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83 | } |
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84 | } |
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