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 | #include <OpenThreads/Barrier> |
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6 | |
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7 | // System includes |
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8 | #include <cassert> |
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9 | |
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10 | #ifdef _WIN32 |
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11 | #include <process.h> |
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12 | #define getpid() _getpid() |
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13 | #else |
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14 | #include <unistd.h> |
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15 | #endif |
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16 | |
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17 | // App includes |
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18 | |
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19 | |
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20 | SimHost::SimHost() |
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21 | { |
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22 | OSG_ALWAYS<<"SimHost instantiated."<<std::endl; |
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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 | int numThreads = 6+1; // 6 channels and one main thread |
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33 | OpenThreads::Barrier syncBarrier; |
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34 | |
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35 | // Create ChannelWorkers |
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36 | OSG_ALWAYS<<"Creating ChannelWorkers..."<<std::endl; |
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37 | for(int i=0; i<numThreads-1; ++i) |
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38 | { |
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39 | osg::ref_ptr<ChannelWorker> worker = new ChannelWorker(); |
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40 | _channelWorker.push_back(worker); |
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41 | } |
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42 | OSG_ALWAYS<<"...done."<<std::endl; |
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43 | |
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44 | // Setup Threading |
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45 | OSG_ALWAYS << "Root Thread ID: " << getpid() << std::endl; |
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46 | |
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47 | OSG_ALWAYS<<OpenThreads::GetNumberOfProcessors()<<" CPUs found, using "<<(numThreads)<<" of them concurrently."<<std::endl; |
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48 | OpenThreads::Thread::SetConcurrency( numThreads ); // Only supported by pthread implementation, otherwise ignored |
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49 | |
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50 | OpenThreads::Thread::Init(); |
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51 | |
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52 | } |
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53 | |
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54 | void SimHost::run() |
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55 | { |
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56 | // Launch threads |
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57 | for(int i=0;i<static_cast<int>(_channelWorker.size());++i) |
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58 | { |
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59 | int status; |
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60 | |
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61 | //thread->setStackSize(1024*256); |
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62 | status = _channelWorker[i]->start(); |
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63 | assert(status == 0); |
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64 | } |
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65 | |
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66 | // Do something in the main thread |
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67 | for(int i=0;i<10000000;i++) |
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68 | OSG_ALWAYS<<""; |
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69 | |
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70 | // Signal threads to finish |
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71 | for(int i=0;i<static_cast<int>(_channelWorker.size());++i) |
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72 | { |
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73 | //_channelWorker[i]->setDone(true); // non blocking |
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74 | _channelWorker[i]->cancel(); // Blocking |
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75 | } |
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76 | |
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77 | for(int i=0;i<100000000;i++) |
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78 | OSG_ALWAYS<<""; |
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79 | |
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80 | //syncBarrier.block(numThreads); // Block until all threads are ready |
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81 | } |
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