mariadb-columnstore-engine/utils/threadpool/tp.cpp

/* Copyright (C) 2014 InfiniDB, Inc.

   This program is free software; you can redistribute it and/or
   modify it under the terms of the GNU General Public License
   as published by the Free Software Foundation; version 2 of
   the License.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
   MA 02110-1301, USA. */


#include <string>
#include <stdexcept>
#include <iostream>
#include <fstream>
using namespace std;
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <boost/thread.hpp>
#include <boost/scoped_ptr.hpp>
#include <boost/scoped_array.hpp>
#include <boost/shared_ptr.hpp>
#include "threadpool.h"

int64_t thecount = 0;
boost::mutex mutex;

const string timeNow()
{
    time_t outputTime = time(0);
    struct tm ltm;
    char buf[32];	//ctime(3) says at least 26
    size_t len = 0;
#ifdef _MSC_VER
    asctime_s(buf, 32, localtime_r(&outputTime, &ltm));
#else
    asctime_r(localtime_r(&outputTime, &ltm), buf);
#endif
    len = strlen(buf);

    if (len > 0) --len;

    if (buf[len] == '\n') buf[len] = 0;

    return buf;
}

// Functor class
struct foo
{
    int64_t fData;
    int64_t fThd;
    string start;
    bool running;

    void operator ()()
    {
        start = timeNow();

        std::cout << "foo thd = " << fThd << " start " << start << std::endl;

        for (int64_t i = 0; i < 1024 * 1024 * (fThd + 0) * 128; i++)
            // simulate some work
            fData++;

        boost::mutex::scoped_lock lock(mutex);
        std::cout << "foo thd = " << fThd << " start " << start << " fin " << timeNow() << std::endl;
    }

    foo(int64_t i) : fThd(i), fData(i), running(true)
    {
        start = timeNow();
    }

    foo(const foo& copy) : fData(copy.fData), fThd(copy.fThd), start(copy.start), running(copy.running)
    {
        std::cout << "new foo " << fThd << endl;
    }

    ~foo()
    {
        running = false;
    }
};



int main( int argc, char** argv)
{
    threadpool::ThreadPool pool( 20, 10 );
    std::vector<uint64_t> hndl;
    hndl.reserve(10);
    int t1 = hndl.capacity();
    uint64_t testHndl;
    uint64_t thdhndl = 999;
    int64_t thd = 1;
    boost::function0<void> foofunc;
    boost::function0<void> foofunc2;

    for (int64_t y = 0; y < 1; y++)
    {
        foo bar(y);
//		foofunc = bar;
//		foofunc2 = foofunc;
        std::cout << "Done with assign" << std::endl;

        for (int64_t i = 0; i < 1; ++i)
        {
            bar.fThd = thd++;
            thdhndl = pool.invoke(bar);

            if (y < 10)
            {
                hndl.push_back(thdhndl);
            }

            if (y == 0)
            {
                testHndl = thdhndl;
            }
        }

        boost::mutex::scoped_lock lock(mutex);
    }

    // Wait until all of the queued up and in-progress work has finished
    std::cout << "Threads for join " << hndl.size() << std::endl;
    pool.dump();
    std::cout << "*** JOIN 1 ***" << std::endl;
    pool.join(testHndl);
    pool.dump();
    std::cout << "*** JOIN 10 ***" << std::endl;
    pool.join(hndl);
    pool.dump();
    std::cout << "*** WAIT ***" << std::endl;
    pool.wait();
    pool.dump();
    sleep(2);
    return 0;
}