CPU Usage 50% solution 1 using GetTickCount()

solution1.cpp

#include <boost/thread.hpp>
#include "windows.h"
#define INTERVAL 10

void infiniteLoop() {
    while (1) {
        DWORD startTime = GetTickCount();
        while (GetTickCount() - startTime <= INTERVAL)
            ; 
        boost::posix_time::millisec sleepTime(INTERVAL);
        boost::this_thread::sleep(sleepTime);
    }
}

int main() {
    boost::thread thread1(infiniteLoop);
    boost::thread thread2(infiniteLoop);
    thread1.join();
    thread2.join();
    char c;
    std::cin >> c;
}