boost::thread sample code

게임 루프 안에서 클래스의 특정 멤버함수(오래걸리는)를 쓰레드로 빼서 처리하려고 시도 했던 테스트 코드 결론 : 생각만큼 결과가 좋진 않다. 성능상의 문제나 동기화 처리시 문제점이나..... 아직 좀더 생각해 봐야 할것 같다.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117

#include "stdafx.h" #include <iostream> #include <boost/thread.hpp> #include <boost/thread/xtime.hpp>   #include <algorithm> #include <functional> #include <Windows.h> #include <vector>   using namespace std;       bool is_key_down(int v_key) {     return static_cast<bool>(::GetKeyState(v_key) & 0x8000); }   template<typename T> struct ThreadWorker {     typedef void (T::*mfptr)();     ThreadWorker(T* pInst, mfptr job)         : m_pInst(pInst), m_fpJob(job)     { }     void operator() ()     { (m_pInst->*m_fpJob)(); }       T*      m_pInst;     mfptr   m_fpJob; };   template <typename T> class calc_square {     T i; public:     calc_square() : i(0) {}     T operator() () { ++i; return i*i; } };   class CSomeClass { public:     CSomeClass()         : is_created(false), is_complate(false)     {         mData.resize(24, 0);         mPivot = 0;     };     ~CSomeClass(){};       inline void tick()     {         cout<< "some class in loop "<< mData[mPivot++]<< "\n";         if (mPivot >= 24)             mPivot = 0;         take_sleep(1);     }         inline void long_time_func()     {         if (is_created || is_complate)  return;           is_created = true;         ThreadWorker<CSomeClass> func(this, &CSomeClass::long_time_inner);         boost::thread work(func);     }   private:     inline void long_time_inner()     {         cout<< "long_time_start\n";           generate(mData.begin(), mData.end(), calc_square<int>());           cout<< "long_time_end\n";         is_complate = true;     }       void    take_sleep(unsigned int sec)     {         boost::xtime xt;         boost::xtime_get(&xt, boost::TIME_UTC);         xt.sec += sec;         boost::thread::sleep(xt);     }       bool is_created;     bool is_complate;       vector<int> mData;     size_t      mPivot; };     int _tmain(int argc, _TCHAR* argv[]) {     CSomeClass cls;       while (1)     {         if (is_key_down(27))         {             break;         }         if (is_key_down(VK_SPACE))      // load         {             cls.long_time_func();         }           cls.tick();     }       return 0; }