4005l1.orig100644 772 151 2567 7160242037 12220 0ustar wwwadminwwwdevListing 1: Java Benchmark Source Code public class PerformanceTester { private int amount; private static int NOBJECTS = 500000; public void addAmount (int val) { amount += val; } public int getAmount () { return amount; } /** * Benchmark driver. Creates half a million of simple account * objects, adds an amount to each one, and then computes the * sum of all amounts in all objects. * Reports elapsed time in milliseconds and number of objects * processed per millisecond. */ public static void main (String[] args) { long starttime = 0; long endtime = 0; int sum = 0; starttime = System.currentTimeMillis(); PerformanceTester[] ptarr = new PerformanceTester[NOBJECTS]; for (int i = 0; i < NOBJECTS; i++) ptarr[i] = new PerformanceTester(); for (int i = 0; i < NOBJECTS; i++) ptarr[i].addAmount(i); for (int i = 0; i < NOBJECTS; i++) sum += ptarr[i].getAmount(); endtime = System.currentTimeMillis(); System.out.println ("Elapsed time in milliseconds for " + NOBJECTS + " objects: " + (endtime - starttime)); System.out.println ("Objects per millisecond: " + (NOBJECTS / (endtime - starttime))); } } 4005l2.orig100644 772 151 3314 7160242053 12206 0ustar wwwadminwwwdevListing 2. C++ Benchmark Source Code #include #include #include const int NOBJECTS = 500000; class PerfTest { public: PerfTest (); void addAmount (int val); int getAmount (); private: int amount; }; PerfTest::PerfTest () { amount = 0; } void PerfTest::addAmount (int val) { amount += val; } int PerfTest::getAmount () { return amount; } void reportResult (struct timeval* tstart, struct timeval* tend); /* * C++ version of the test driver. * Creates half a million simple account objects, adds an amount * to each one, and then adds up the amounts in all accounts. * Reports elapsed time in milliseconds and number of objects * processed per millisecond. */ void main (int argc, char** argv) { PerfTest* ptarr[NOBJECTS]; struct timeval tval_start; struct timeval tval_end; struct timezone tzone; int sum = 0; int i = 0; gettimeofday (&tval_start, &tzone); for (i = 0; i < NOBJECTS; i++) ptarr[i] = new PerfTest; for (i = 0; i < NOBJECTS; i++) ptarr[i]->addAmount(i); for (i = 0; i < NOBJECTS; i++) sum += ptarr[i]->getAmount(); gettimeofday (&tval_end, &tzone); reportResult (&tval_start, &tval_end); } /* * Helper function to report results. */ void reportResult (struct timeval* tstart, struct timeval* tend) { int start_ms = (tstart->tv_sec * 1000) + (tstart->tv_usec / 1000); int end_ms = (tend->tv_sec * 1000) + (tend->tv_usec / 1000); cout << "Elapsed time in milliseconds for " << NOBJECTS << " objects: " << (end_ms - start_ms) << "\n"; cout << "Objects per millisecond: " << (NOBJECTS / (end_ms - start_ms)) << "\n"; }