/* 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. */

// $Id: tdriver-datalist.cpp 9210 2013-01-21 14:10:42Z rdempsey $
#include <iostream>
#include <sstream>
#include <list>

#include <pthread.h>
#include <time.h>
#include <sys/time.h>

#include <cppunit/extensions/HelperMacros.h>
#include <cppunit/extensions/TestFactoryRegistry.h>
#include <cppunit/ui/text/TestRunner.h>

#include "fifo.h"
#include "wsdl.h"
#include "constantdatalist.h"
#include "bucketdl.h"
#include "bandeddl.h"
#include "elementtype.h"
#include "stopwatch.cpp"

// #undef CPPUNIT_ASSERT
// #define CPPUNIT_ASSERT(x)

using namespace std;
using namespace joblist;
Stopwatch timer;

struct DLElement
{
 public:
  int i;
  bool operator<(const DLElement& c) const
  {
    return (i < c.i);
  }
  const char* getHashString(int mode, int* len) const
  {
    *len = 4;
    return (char*)&i;
  }
};

istream& operator>>(istream& is, DLElement& dl)
{
  is.read((char*)&dl.i, sizeof(int));
  return is;
}
ostream& operator<<(ostream& os, const DLElement& dl)
{
  os.write((char*)&dl.i, sizeof(int));
  return os;
}

int64_t count = 150000000 /*1000000*/;
int maxElements = 32000000 /*50000*/;  // max elements in memory at once for the benchmarks
int buckets = 16;                      // # of buckets to use in bucketDL tests.
#define MAXINT64 (uint64_t)0xffffffffffffffffLL

/* Note, this is like what we'll use for banding operations */
class BandGrouper
{
 public:
  uint32_t operator()(const char* data, uint32_t len) const
  {
    stringstream ss(string(data, len));
    ElementType dle;

    ss >> dle;
    //  			cout << "bandGrouper sees " << dle.i << " returning " <<
    //  dle.i/(::count/buckets) << endl;
    return dle.first / (::count / buckets);
  }
};

void timespec_sub(const struct timespec& tv1, const struct timespec& tv2, struct timespec& diff)
{
  if (tv2.tv_nsec < tv1.tv_nsec)
  {
    diff.tv_sec = tv2.tv_sec - tv1.tv_sec - 1;
    diff.tv_nsec = tv1.tv_nsec - tv2.tv_nsec;
  }
  else
  {
    diff.tv_sec = tv2.tv_sec - tv1.tv_sec;
    diff.tv_nsec = tv2.tv_nsec - tv1.tv_nsec;
  }
}

int cCount = 0, pCount = 0;

void* MP_FIFO_stress_producer(void* arg)
{
  FIFO<ElementType>* f = reinterpret_cast<FIFO<ElementType>*>(arg);
  uint64_t i;
  ElementType val;
  uint64_t id = ::pCount++;

  // 	cout << "producer " << id << " started" << endl;
  for (i = 0; i < (uint32_t)::count / 10; i++)
  {
    val.first = (id << 60) | i;
    val.second = val.first;
    f->insert(val);
  }

  return NULL;
}

void* MP_FIFO_stress_consumer(void* arg)
{
  FIFO<ElementType>* f = reinterpret_cast<FIFO<ElementType>*>(arg);
  int it;
  ElementType val;
  bool ret;
  // 	int id = ::cCount++;
  uint64_t pCounter[10];  // 10 producers right now; make this a global var...
  uint64_t pnum, pnext;

  memset(pCounter, 0, 8 * 10);

  //  	cout << "consumer " << id << " started" << endl;
  it = f->getIterator();
  ret = f->next(it, &val);

  while (ret)
  {
    pnum = val.first >> 60;
    pnext = pCounter[pnum]++;
    //  		cerr << id << ":  .first=0x" << hex << val.first << dec << " pnum:" << pnum << " val:"
    //  << pnext << endl;
    CPPUNIT_ASSERT((val.first & 0xfffffffffffffffLL) == pnext);
    CPPUNIT_ASSERT(val.second == val.first);
    ret = f->next(it, &val);
  }

  return NULL;
}

void* FIFO_stress_consumer(void* arg)
{
  FIFO<ElementType>* f = reinterpret_cast<FIFO<ElementType>*>(arg);
  uint64_t i;
  int it;
  ElementType val;
  bool ret;
  int id = ++::cCount;

  cout << "consumer " << id << " started" << endl;
  it = f->getIterator();

  for (i = 0; i < MAXINT64; i++)
  {
    //  		cout << id << ": " << i << " ";
    ret = f->next(it, &val);

    if (!ret)
    {
      cout << "consumer " << id << " exiting" << endl;
      return NULL;
    }

    else
    {
      //  			cout << "first: " << val.first << " second: " << val.second << endl;
      CPPUNIT_ASSERT(ret == true);
      CPPUNIT_ASSERT(val.first == i && val.second == i);
    }
  }

  return NULL;
}

void* FIFO_bench_consumer(void* arg)
{
  FIFO<int>* f = reinterpret_cast<FIFO<int>*>(arg);
  int i, it, val;
  bool ret;

  it = f->getIterator();

  for (i = 0; i < ::count; i++)
  {
    // 		cout << "t " << i << endl;
    ret = f->next(it, &val);
    //    		CPPUNIT_ASSERT(ret == true);
  }

  return NULL;
}

void* FIFO_2_helper(void* arg)
{
  FIFO<DLElement>* f = reinterpret_cast<FIFO<DLElement>*>(arg);
  int i;
  DLElement fe;

  for (i = 0; i < ::count; i++)
  {
    fe.i = i;
#ifdef DEBUG
    cout << "inserting " << i << endl;
#endif
    f->insert(fe);
  }

  sleep(5);  // causes the test to block on moreData until endOfInput is called
  f->endOfInput();
  return NULL;
}

void* WSDL_2_helper(void* arg)
{
  WSDL<ElementType>* w = reinterpret_cast<WSDL<ElementType>*>(arg);
  uint32_t i, id;
  bool nextRet;
  ElementType dle;

  id = w->getIterator();

  //  	cout << "id = " << id << endl;
  for (i = 0; i < ::count; i++)
  {
    nextRet = w->next(id, &dle);
    //   		cout << "tgot " << dle.i << endl;
    CPPUNIT_ASSERT(nextRet == true);
    CPPUNIT_ASSERT(dle.first == i && dle.second == i);
  }

  return NULL;
}

void* BandedDL_1_helper(void* arg)
{
  BandedDL<ElementType>* w = reinterpret_cast<BandedDL<ElementType>*>(arg);
  uint32_t i, id;
  bool nextRet;
  ElementType dle;

  id = w->getIterator();

  //   	cout << "id = " << id << endl;
  for (i = 0; i < ::count; i++)
  {
    nextRet = w->next(id, &dle);
    //    		cout << "tgot " << dle.i << endl;
    //		CPPUNIT_ASSERT(nextRet == true);
    //  		CPPUNIT_ASSERT(dle.first == i && dle.second == i);
  }

  return NULL;
}

void* BandedDL_2_helper(void* arg)
{
  BandedDL<StringElementType>* w = reinterpret_cast<BandedDL<StringElementType>*>(arg);
  uint32_t i, id;
  bool nextRet;
  StringElementType dle;

  id = w->getIterator();

  //   	cout << "id = " << id << endl;
  for (i = 0; i < ::count; i++)
  {
    ostringstream os;

    os << "blah blah" << i;
    nextRet = w->next(id, &dle);
    //    		cout << "tgot " << dle.i << endl;
    CPPUNIT_ASSERT(nextRet == true);
    CPPUNIT_ASSERT(dle.first == i && dle.second == os.str());
  }

  return NULL;
}

void* WSDL_bench_helper(void* arg)
{
  WSDL<ElementType>* w = reinterpret_cast<WSDL<ElementType>*>(arg);
  int i, id;
  bool nextRet;
  ElementType e;

  id = w->getIterator();

  for (i = 0; i < ::count; i++)
    nextRet = w->next(id, &e);

  return NULL;
}

void* SWSDL_bench_helper(void* arg)
{
  SWSDL<ElementType>* sw = reinterpret_cast<SWSDL<ElementType>*>(arg);
  int i, id;
  bool nextRet;
  ElementType e;

  id = sw->getIterator();

  for (i = 0; i < ::count * 8; i++)
    nextRet = sw->next(id, &e);

  return NULL;
}

void* BDL_bench_helper(void* arg)
{
  BandedDL<ElementType>* sw = reinterpret_cast<BandedDL<ElementType>*>(arg);
  int i, id;
  bool nextRet;
  ElementType e;

  id = sw->getIterator();

  for (i = 0; i < ::count * 8; i++)
    nextRet = sw->next(id, &e);

  return NULL;
}

void* SWSDL_producer(void* arg)
{
  SWSDL<ElementType>* sw = reinterpret_cast<SWSDL<ElementType>*>(arg);

  for (int i = 0; i < ::count; i++)
    sw->insert(ElementType(i, i));

  return NULL;
}

void* BDL_producer(void* arg)
{
  BandedDL<ElementType>* sw = reinterpret_cast<BandedDL<ElementType>*>(arg);
  ElementType dle;

  for (int i = 0; i < ::count; i++)
  {
    // dle.first = dle.second = i;
    sw->insert(ElementType(i, i));
  }

  // sw->endOfInput();
  // cout << "end of input size is " << sw->totalSize() << endl;
  return NULL;
}

void* ZDL_producer(void* arg)
{
  ZDL<ElementType>* zdl = reinterpret_cast<ZDL<ElementType>*>(arg);

  for (int i = 0; i < ::count; i++)
  {
    zdl.insert(ElementType((int)N * rand() / (RAND_MAX + 1.0), i));
  }

  return NULL;
}

void* ZDL_consumer(void* arg)
{
  ZDL<ElementType>* zdl = reinterpret_cast<ZDL<ElementType>*>(arg);
  int i, id;
  bool nextRet;
  ElementType e;

  id = zdl->getIterator();
  nextRet = zdl->next(id, &e);

  while (nextRet)
    nextRet = zdl->next(id, &e);

  return NULL;
}

void* SWSDL_consumer(void* arg)
{
  SWSDL<ElementType>* sw = reinterpret_cast<SWSDL<ElementType>*>(arg);
  int i, id;
  bool nextRet;
  ElementType e;

  id = sw->getIterator();
  nextRet = sw->next(id, &e);

  while (nextRet)
    nextRet = zdl->next(id, &e);

  return NULL;
}

class DataListDriver : public CppUnit::TestFixture
{
  CPPUNIT_TEST_SUITE(DataListDriver);

  // CPPUNIT_TEST(FIFO_1);
  // CPPUNIT_TEST(FIFO_2);
  // CPPUNIT_TEST(MP_FIFO_stress);		//10 consumers 10 producers
  // CPPUNIT_TEST(FIFO_stress);  // 10 consumers 1 producer; doesn't stop
  // CPPUNIT_TEST(FIFO_bench);
  // CPPUNIT_TEST(FIFO_singlethread_bench);
  // CPPUNIT_TEST(WSDL_1);
  // CPPUNIT_TEST(WSDL_2);
  // CPPUNIT_TEST(WSDL_3);		// WSDL_1 with StringElementTypes
  // CPPUNIT_TEST(WSDL_bench);
  // CPPUNIT_TEST(WSDL_singlethread_bench);
  // CPPUNIT_TEST(CON_DL_1);   // ConstantDataList
  // CPPUNIT_TEST(BucketDL_1);

  // CPPUNIT_TEST(BandedDL_1);		// WSDL_2 ported to BandedDLs
  // CPPUNIT_TEST(BandedDL_2);		// BandedDL_1 that uses StringElementTypes

  // make sure the DataList consumer-side interface works.
  // CPPUNIT_TEST(BandedDL_as_WSDL_1);

  // random inserts to bucketDL, create bandedDL, make sure it's in order
  // CPPUNIT_TEST(BandedDL_as_WSDL_2);

  /* tests prompted by feedback */
  // CPPUNIT_TEST(polymorphism_1);

  // make sure we can store basic types (int in this case)
  // CPPUNIT_TEST(polymorphism_2);

  // make sure we can create a FIFO, fill it, cast it to a DataList, and read the elements.
  // CPPUNIT_TEST(polymorphism_3);
  // CPPUNIT_TEST(SWSDL_bench);
  // CPPUNIT_TEST(BDL_multiproducer_bench);
  // CPPUNIT_TEST(BDL_consumer_bench);
  // CPPUNIT_TEST(SWSDL_multiproducer_bench);
  CPPUNIT_TEST(SWSDL_consumer_bench);
  // CPPUNIT_TEST(BDL_singlethread_bench);
  CPPUNIT_TEST(ZDL_bench);
  CPPUNIT_TEST_SUITE_END();

 private:
 public:
  void FIFO_1()
  {
    int i, it;
    DLElement dummy;
    FIFO<DLElement> f(1, 20);
    bool nextRet;

    for (i = 0; i < 10; i++)
    {
      dummy.i = i;
      f.insert(dummy);
    }

    f.endOfInput();
    it = f.getIterator();
    CPPUNIT_ASSERT(it == 0);

    for (i = 0; i < 10; i++)
    {
      nextRet = f.next(it, &dummy);
      CPPUNIT_ASSERT(nextRet == true);
      CPPUNIT_ASSERT(dummy.i == i);
    }
  }

  void FIFO_2()
  {
    int i, it;
    DLElement fe;
    FIFO<DLElement> fifo(1, 2000);
    pthread_t thread;
    bool ret;

    fe.i = 0;
    pthread_create(&thread, NULL, FIFO_2_helper, &fifo);
    sleep(1);  // make sure the thread sleeps after 2000 inserts
    it = fifo.getIterator();

    for (i = 0; i < ::count; i++)
    {
      if (i % 100000 == 0)
        cout << i << "/" << ::count << endl;

      ret = fifo.next(it, &fe);
      // 			cout << "fe = " << fe.i << endl;
      CPPUNIT_ASSERT(ret == true);
      CPPUNIT_ASSERT(fe.i == i);
    }

    ret = fifo.next(it, &fe);  // should sleep until the thread calls endOfInput()
    CPPUNIT_ASSERT(ret == false);
    pthread_join(thread, NULL);
  }

  void MP_FIFO_stress()
  {
    int64_t i;
    FIFO<ElementType> f(10, 25000);
    pthread_t consumer[10];
    pthread_t producer[10];

    f.setMultipleProducers(true);

    for (i = 0; i < 10; i++)
      pthread_create(&consumer[i], NULL, MP_FIFO_stress_consumer, &f);

    for (i = 0; i < 10; i++)
      pthread_create(&producer[i], NULL, MP_FIFO_stress_producer, &f);

    for (i = 0; i < 10; i++)
      pthread_join(producer[i], NULL);

    f.endOfInput();

    /*
    //  		for (i = 0; i < MAXINT64; i++) {
                    for (i = 0; i < ::count; i++) {
                            if ((i % 10000000) == 0)
                                    cout << i << endl;
                            f.insert(ElementType(i, i));
                    }
                    f.endOfInput();
    */
    for (i = 0; i < 10; i++)
      pthread_join(consumer[i], NULL);
  }

  void FIFO_stress()
  {
    int64_t i;
    FIFO<ElementType> f(10, 25000);
    pthread_t consumer[10];

    for (i = 0; i < 10; i++)
      pthread_create(&consumer[i], NULL, FIFO_stress_consumer, &f);

    //  		for (i = 0; i < MAXINT64; i++) {
    for (i = 0; i < ::count; i++)
    {
      if ((i % 10000000) == 0)
        cout << i << endl;

      f.insert(ElementType(i, i));
    }

    f.endOfInput();

    for (i = 0; i < 10; i++)
      pthread_join(consumer[i], NULL);
  }

  void FIFO_bench()
  {
    int i;
    FIFO<int> f(1, ::maxElements);
    pthread_t consumer;
    struct timespec tv1, tv2, diff;

    pthread_create(&consumer, NULL, FIFO_bench_consumer, &f);
    clock_gettime(CLOCK_REALTIME, &tv1);

    for (i = 0; i < ::count; i++)
    {
      f.insert(i);
    }

    f.endOfInput();
    pthread_join(consumer, NULL);
    clock_gettime(CLOCK_REALTIME, &tv2);
    timespec_sub(tv1, tv2, diff);
    cout << "producer & consumer passed " << ::count << " elements in " << diff.tv_sec << "s " << diff.tv_nsec
         << "ns" << endl;
  }

  void FIFO_singlethread_bench()
  {
    int i, it, e;
    FIFO<int> f(1, ::count);
    bool more;
    struct timespec tv1, tv2, diff;

    clock_gettime(CLOCK_REALTIME, &tv1);

    for (i = 0; i < ::count; i++)
    {
      f.insert(i);
    }

    f.endOfInput();
    clock_gettime(CLOCK_REALTIME, &tv2);
    timespec_sub(tv1, tv2, diff);

    cout << "FIFO_singlethreaded_bench: inserted " << ::count << " ints in " << diff.tv_sec << "s "
         << diff.tv_nsec << "ns" << endl;

    it = f.getIterator();

    for (i = 0; i < ::count; i++)
    {
      more = f.next(it, &e);
    }

    clock_gettime(CLOCK_REALTIME, &tv1);
    timespec_sub(tv2, tv1, diff);
    cout << "FIFO_singlethread_bench: consumed, took " << diff.tv_sec << "s " << diff.tv_nsec << "ns" << endl;
  }

  void WSDL_1()
  {
    WSDL<ElementType> w(1, ::count / 100);
    ElementType dle;
    uint32_t i, id;
    bool nextRet;

    for (i = 0; i < ::count; i++)
    {
      // 			cout << "inserting " << i << endl;
      dle.first = dle.second = i;
      w.insert(dle);
    }

    w.endOfInput();
    id = w.getIterator();

    for (i = 0; i < ::count; i++)
    {
      nextRet = w.next(id, &dle);
      //  			cout << i << ":got " << dle.first << " " << dle.second << endl;
      CPPUNIT_ASSERT(nextRet == true);
      CPPUNIT_ASSERT(dle.first == i && dle.second == i);
    }
  }

  void WSDL_2()
  {
    WSDL<ElementType> w(2, ::count / 10);
    ElementType dle;
    uint32_t i, id, size;
    bool nextRet;
    pthread_t consumer1;

    pthread_create(&consumer1, NULL, WSDL_2_helper, &w);

    // thread should wait here waiting on endOfInput()

    for (i = 0; i < ::count; i++)
    {
      dle.first = dle.second = i;
      w.insert(dle);
    }

    sleep(1);
    w.endOfInput();

    /* let the thread consume the loaded set; make sure that the load
    doesn't happen until the main thread finishes with the loaded set */

    sleep(1);
    size = w.totalSize();
    id = w.getIterator();

    for (i = 0; i < ::count; i++)
    {
      nextRet = w.next(id, &dle);
      //   			cout << "got " << dle.i << endl;
      CPPUNIT_ASSERT(nextRet == true);
      CPPUNIT_ASSERT(dle.first == i && dle.second == i);
    }

    pthread_join(consumer1, NULL);
  }

  void WSDL_3()
  {
    WSDL<StringElementType> w(1, ::count / 10);
    StringElementType dle;
    uint32_t i, id;
    bool nextRet;

    for (i = 0; i < ::count; i++)
    {
      ostringstream os;

      os << "blah blah blah" << i;
      // 			cout << "inserting " << i << endl;
      dle.first = i;
      dle.second = os.str();
      w.insert(dle);
    }

    w.endOfInput();
    id = w.getIterator();

    for (i = 0; i < ::count; i++)
    {
      ostringstream os;

      os << "blah blah blah" << i;
      nextRet = w.next(id, &dle);
      //   			cout << i << ":got " << dle.first << " " << dle.second << endl;
      CPPUNIT_ASSERT(nextRet == true);
      CPPUNIT_ASSERT(dle.first == i && dle.second == os.str());
    }
  }

  void WSDL_bench()
  {
    WSDL<ElementType> w(1, ::maxElements);
    int i;
    pthread_t consumer;
    struct timespec ts1, ts2, diff;

    clock_gettime(CLOCK_REALTIME, &ts1);
    pthread_create(&consumer, NULL, WSDL_bench_helper, &w);

    for (i = 0; i < ::count; i++)
      w.insert(ElementType(i, i));

    w.endOfInput();
    cout << "end of input size is " << w.totalSize() << endl;
    pthread_join(consumer, NULL);
    clock_gettime(CLOCK_REALTIME, &ts2);
    timespec_sub(ts1, ts2, diff);
    cout << "WSDL_bench: producer & consumer passed " << ::count << " elements in " << diff.tv_sec << "s "
         << diff.tv_nsec << "ns" << endl;
  }

  void WSDL_singlethread_bench()
  {
    WSDL<int> w(1, ::maxElements);
    int i, id, e;
    bool nextRet;
    struct timespec ts1, ts2, diff;

    clock_gettime(CLOCK_REALTIME, &ts1);

    for (i = 0; i < ::count; i++)
      w.insert(i);

    w.endOfInput();
    id = w.getIterator();

    for (i = 0; i < ::count; i++)
      nextRet = w.next(id, &e);

    clock_gettime(CLOCK_REALTIME, &ts2);
    timespec_sub(ts1, ts2, diff);
    cout << "WSDL_singlethread_bench: producer & consumer passed " << ::count << " elements in "
         << diff.tv_sec << "s " << diff.tv_nsec << "ns" << endl;
  }

  void SWSDL_bench()
  {
    /*
    SWSDL<ElementType> sw(1, ::maxElements);
    int i;
    pthread_t consumer;
    pthread_t producer;
    struct timespec ts1, ts2, diff;

    clock_gettime(CLOCK_REALTIME, &ts1);
    pthread_create(&producer, NULL, SWSDL_producer, &sw);
    pthread_create(&consumer, NULL, SWSDL_bench_helper, &sw);

    pthread_join(producer, NULL);
    pthread_join(consumer, NULL);
    clock_gettime(CLOCK_REALTIME, &ts2);
    timespec_sub(ts1, ts2, diff);
    cout << "SWSDL_bench: producer & consumer passed " << ::count << " elements in " <<
            diff.tv_sec << "s " << diff.tv_nsec << "ns" << endl;
    */
    SWSDL<ElementType> sw(1, ::maxElements);
    int i;
    pthread_t consumer;
    struct timespec ts1, ts2, diff;

    clock_gettime(CLOCK_REALTIME, &ts1);
    pthread_create(&consumer, NULL, SWSDL_bench_helper, &sw);

    for (i = 0; i < ::count; i++)
      sw.insert(ElementType(i, i));

    sw.endOfInput();
    cout << "end of input size is " << sw.totalSize() << endl;
    pthread_join(consumer, NULL);
    clock_gettime(CLOCK_REALTIME, &ts2);
    timespec_sub(ts1, ts2, diff);
    cout << "SWSDL_bench: producer & consumer passed " << ::count << " elements in " << diff.tv_sec << "s "
         << diff.tv_nsec << "ns" << endl;
  }

  void SWSDL_multiproducer_bench()
  {
    SWSDL<ElementType> sw(1, ::maxElements);
    sw.setMultipleProducers(true);
    int i, id;
    ElementType e;
    bool nextRet;
    uint32_t numOfThreads = 8;
    pthread_t producer[numOfThreads];
    struct timespec ts1, ts2, diff;

    clock_gettime(CLOCK_REALTIME, &ts1);

    for (i = 0; i < numOfThreads; i++)
      pthread_create(&producer[i], NULL, SWSDL_producer, &sw);

    for (i = 0; i < numOfThreads; i++)
      pthread_join(producer[i], NULL);

    sw.endOfInput();
    cout << "end of input size is " << sw.totalSize() << endl;
    clock_gettime(CLOCK_REALTIME, &ts2);
    timespec_sub(ts1, ts2, diff);
    cout << "# of Producer: " << numOfThreads << endl;
    cout << "SWSDL_producer_phase_bench: producer & consumer passed " << ::count * numOfThreads
         << " elements in " << diff.tv_sec << "s " << diff.tv_nsec << "ns" << endl;
    clock_gettime(CLOCK_REALTIME, &ts1);
    id = sw.getIterator();

    for (i = 0; i < ::count; i++)
      nextRet = sw.next(id, &e);

    clock_gettime(CLOCK_REALTIME, &ts2);
    timespec_sub(ts1, ts2, diff);

    cout << "SWSDL_consumer_phase_bench: producer & consumer passed " << ::count * numOfThreads
         << " elements in " << diff.tv_sec << "s " << diff.tv_nsec << "ns" << endl;
  }

  void SWSDL_consumer_bench()
  {
    SWSDL<ElementType> sw(4);
    sw.setMultipleProducers(true);
    ElementType dle;
    uint32_t i, id;
    bool nextRet;
    uint32_t numOfProducers = 8;
    uint32_t numOfConsumers = 4;
    pthread_t producer[numOfProducers];
    pthread_t consumer[numOfConsumers];
    struct timespec ts1, ts2, diff;

    clock_gettime(CLOCK_REALTIME, &ts1);

    for (i = 0; i < numOfProducers; i++)
      pthread_create(&producer[i], NULL, SWSDL_producer, &sw);

    for (i = 0; i < numOfConsumers; i++)
      pthread_create(&consumer[i], NULL, SWSDL_consumer, &sw);

    for (i = 0; i < numOfThreads; i++)
      pthread_join(producer[i], NULL);

    sw.endOfInput();

    clock_gettime(CLOCK_REALTIME, &ts2);
    timespec_sub(ts1, ts2, diff);

    cout << "# of Producer: " << numOfThreads << endl;
    cout << "SWSDL_consumer_bench: producer & consumer passed " << ::count * numOfThreads << " elements in "
         << diff.tv_sec << "s " << diff.tv_nsec << "ns" << endl;
  }

  void BDL_multiproducer_bench()
  {
    BandedDL<ElementType> w(2);
    w.setMultipleProducers(true);
    ElementType dle;
    uint32_t i, id;
    bool nextRet;
    uint32_t numOfThreads = 8;
    pthread_t producer[numOfThreads];
    struct timespec ts1, ts2, diff;

    clock_gettime(CLOCK_REALTIME, &ts1);

    for (i = 0; i < numOfThreads; i++)
      pthread_create(&producer[i], NULL, BDL_producer, &w);

    for (i = 0; i < numOfThreads; i++)
      pthread_join(producer[i], NULL);

    w.endOfInput();
    cout << "end of input size is " << w.totalSize() << endl;
    clock_gettime(CLOCK_REALTIME, &ts2);
    timespec_sub(ts1, ts2, diff);
    cout << "# of Producer: " << numOfThreads << endl;
    cout << "BDL_producer_phase_bench: producer & consumer passed " << ::count * numOfThreads
         << " elements in " << diff.tv_sec << "s " << diff.tv_nsec << "ns" << endl;

    clock_gettime(CLOCK_REALTIME, &ts1);
    id = w.getIterator();

    for (i = 0; i < ::count; i++)
    {
      nextRet = w.next(id, &dle);
    }

    clock_gettime(CLOCK_REALTIME, &ts2);
    timespec_sub(ts1, ts2, diff);

    cout << "BDL_consumer_phase_bench: producer & consumer passed " << ::count * numOfThreads
         << " elements in " << diff.tv_sec << "s " << diff.tv_nsec << "ns" << endl;
    /*
                    SWSDL<ElementType> sw(1, ::maxElements);
                    int i;
                    pthread_t consumer;
                    struct timespec ts1, ts2, diff;

                    clock_gettime(CLOCK_REALTIME, &ts1);
                    pthread_create(&consumer, NULL, SWSDL_bench_helper, &sw);
                    for (i = 0; i < ::count; i++)
                            sw.insert(ElementType(i, i));

                    sw.endOfInput();
                    cout << "end of input size is " << sw.totalSize() << endl;
                    pthread_join(consumer, NULL);
                    clock_gettime(CLOCK_REALTIME, &ts2);
                    timespec_sub(ts1, ts2, diff);
                    cout << "SWSDL_bench: producer & consumer passed " << ::count << " elements in " <<
                            diff.tv_sec << "s " << diff.tv_nsec << "ns" << endl;
    */
  }

  void BDL_consumer_bench()
  {
    BandedDL<ElementType> w(2);
    w.setMultipleProducers(true);
    ElementType dle;
    uint32_t i, id;
    bool nextRet;
    uint32_t numOfThreads = 8;
    pthread_t producer[numOfThreads];
    pthread_t consumer;
    struct timespec ts1, ts2, diff;

    clock_gettime(CLOCK_REALTIME, &ts1);

    for (i = 0; i < numOfThreads; i++)
      pthread_create(&producer[i], NULL, BDL_producer, &w);

    for (i = 0; i < numOfThreads; i++)
      pthread_join(producer[i], NULL);

    w.endOfInput();
    // pthread_create(&consumer, NULL, BDL_bench_helper, &w);
    // cout << "end of input size is " << w.totalSize() << endl;
    // clock_gettime(CLOCK_REALTIME, &ts2);
    // timespec_sub(ts1, ts2, diff);
    // cout << "# of Producer: " << numOfThreads << endl;
    // cout << "BDL_producer_phase_bench: producer & consumer passed " <<
    //	::count * numOfThreads << " elements in " << diff.tv_sec << "s " << diff.tv_nsec <<
    //	"ns" << endl;

    // clock_gettime(CLOCK_REALTIME, &ts1);
    id = w.getIterator();

    for (i = 0; i < ::count * 8; i++)
    {
      nextRet = w.next(id, &dle);
    }

    clock_gettime(CLOCK_REALTIME, &ts2);
    timespec_sub(ts1, ts2, diff);
    cout << "end of input size is " << w.totalSize() << endl;
    cout << "BDL_consumer_phase_bench: producer & consumer passed " << ::count * numOfThreads
         << " elements in " << diff.tv_sec << "s " << diff.tv_nsec << "ns" << endl;
    /*
                    SWSDL<ElementType> sw(1, ::maxElements);
                    int i;
                    pthread_t consumer;
                    struct timespec ts1, ts2, diff;

                    clock_gettime(CLOCK_REALTIME, &ts1);
                    pthread_create(&consumer, NULL, SWSDL_bench_helper, &sw);
                    for (i = 0; i < ::count; i++)
                            sw.insert(ElementType(i, i));

                    sw.endOfInput();
                    cout << "end of input size is " << sw.totalSize() << endl;
                    pthread_join(consumer, NULL);
                    clock_gettime(CLOCK_REALTIME, &ts2);
                    timespec_sub(ts1, ts2, diff);
                    cout << "SWSDL_bench: producer & consumer passed " << ::count << " elements in " <<
                            diff.tv_sec << "s " << diff.tv_nsec << "ns" << endl;
    */
  }

  void BDL_singlethread_bench()
  {
    /*SWSDL<ElementType> sw(1, ::maxElements);
    int i;
    pthread_t consumer;
    pthread_t producer;
    struct timespec ts1, ts2, diff;

    clock_gettime(CLOCK_REALTIME, &ts1);
    pthread_create(&producer, NULL, SWSDL_producer, &sw);
    pthread_join(producer, NULL);
    pthread_create(&consumer, NULL, SWSDL_bench_helper, &sw);

    pthread_join(consumer, NULL);
    clock_gettime(CLOCK_REALTIME, &ts2);
    timespec_sub(ts1, ts2, diff);*/
    SWSDL<ElementType> sw(1, ::maxElements);
    int i, id;
    ElementType e;
    bool nextRet;
    struct timespec ts1, ts2, diff;

    clock_gettime(CLOCK_REALTIME, &ts1);
    cout << "start of input size is " << ::count << endl;

    for (i = 0; i < ::count; i++)
      sw.insert(ElementType(i, i));

    // cout << "end of input size is " << sw.totalSize() << endl;
    // sw.endOfInput();
    // id = sw.getIterator();
    for (i = 0; i < ::count; i++)
      nextRet = sw.next(id, &e);

    clock_gettime(CLOCK_REALTIME, &ts2);
    timespec_sub(ts1, ts2, diff);

    // cout << "SWSDL_consumer_phase_bench: producer & consumer passed " <<
    //	::count << " elements in " << diff.tv_sec << "s " << diff.tv_nsec <<
    //	"ns" << endl;
  }

  void CON_DL_1()
  {
    DLElement d, d2;
    int i = 0;
    bool nextRet;

    d.i = 1;

    ConstantDataList<DLElement> c(d);

    nextRet = c.next(i, &d2);
    CPPUNIT_ASSERT(nextRet == true);
    CPPUNIT_ASSERT(d.i == 1 && d2.i == 1);

    d.i = 2;
    c.insert(d);
    nextRet = c.next(i, &d2);
    CPPUNIT_ASSERT(nextRet == true);
    CPPUNIT_ASSERT(d.i == 2 && d2.i == 2);
  }

  void BucketDL_1()
  {
    BucketDL<ElementType> bdl(16, 1, ::count / 100);
    ElementType dle;
    uint32_t i, it, eCount = 0, buckets;
    bool nextRet;

    for (i = 0; i < ::count; i++)
    {
      //  			if (i % 1000000 == 0) cout << i << endl;
      dle.first = dle.second = i;
      bdl.insert(dle);
    }

    bdl.endOfInput();
    //  		cout << "inserted " << ::count << " elements" << endl;

    buckets = bdl.bucketCount();

    for (i = 0; i < buckets; i++)
    {
      it = bdl.getIterator(i);

      do
      {
        nextRet = bdl.next(i, it, &dle);

        if (nextRet)
        {
          CPPUNIT_ASSERT(dle.first >= 0 && dle.first <= (uint64_t)::count);
          CPPUNIT_ASSERT(++eCount <= ::count);
        }
      } while (nextRet == true);
    }

    CPPUNIT_ASSERT(eCount == ::count);
  }

  void BandedDL_1()
  {
    BandedDL<ElementType> w(2);
    ElementType dle;
    uint32_t i, id, size;
    bool nextRet;
    pthread_t consumer1;

    pthread_create(&consumer1, NULL, BandedDL_1_helper, &w);

    // thread should wait here waiting on endOfInput()

    for (i = 0; i < ::count; i++)
    {
      dle.first = dle.second = i;
      w.insert(dle);

      if (((i + 1) % (::count / 10)) == 0)
      {
        cout << "inserted " << i + 1 << "/" << ::count << endl;
        w.saveBand();
      }
    }

    sleep(1);
    w.endOfInput();

    /* let the thread consume the loaded set; make sure that the load
    doesn't happen until the main thread finishes with the loaded set */

    sleep(5);
    size = w.totalSize();
    id = w.getIterator();

    for (i = 0; i < ::count; i++)
    {
      nextRet = w.next(id, &dle);
      //    			cout << "got " << dle.i << endl;
      CPPUNIT_ASSERT(nextRet == true);
      CPPUNIT_ASSERT(dle.first == i);
    }

    pthread_join(consumer1, NULL);
  }

  void BandedDL_2()
  {
    BandedDL<StringElementType> w(2);
    StringElementType dle;
    uint32_t i, id, size;
    bool nextRet;
    pthread_t consumer1;

    pthread_create(&consumer1, NULL, BandedDL_2_helper, &w);

    // thread should wait here waiting on endOfInput()

    for (i = 0; i < ::count; i++)
    {
      ostringstream os;

      os << "blah blah" << i;

      dle.first = i;
      dle.second = os.str();
      w.insert(dle);

      if (((i + 1) % (::count / 10)) == 0)
      {
        cout << "inserted " << i + 1 << "/" << ::count << endl;
        w.saveBand();
      }
    }

    sleep(1);
    w.endOfInput();

    /* let the thread consume the loaded set; make sure that the load
    doesn't happen until the main thread finishes with the loaded set */

    cout << "endofInput finished\n";

    sleep(5);
    size = w.totalSize();
    id = w.getIterator();

    for (i = 0; i < ::count; i++)
    {
      ostringstream os;

      os << "blah blah" << i;
      nextRet = w.next(id, &dle);
      //    			cout << "got " << dle.i << endl;
      CPPUNIT_ASSERT(nextRet == true);
      CPPUNIT_ASSERT(dle.first == i && dle.second == os.str());
    }

    pthread_join(consumer1, NULL);
  }

  void BandedDL_as_WSDL_1()
  {
    BandedDL<ElementType> bdl(1);
    ElementType e;
    uint32_t i, it;
    bool more;

    for (i = 1; i <= ::count; i++)
    {
      e.first = e.second = i;
      bdl.insert(e);

      if (i % (::count / 10) == 0)
        bdl.saveBand();
    }

    bdl.endOfInput();

    it = bdl.getIterator();

    for (i = 1; i <= ::count; i++)
    {
      more = bdl.next(it, &e);
      CPPUNIT_ASSERT(more == true);
      CPPUNIT_ASSERT(e.first == i && e.second == i);
    }

    more = bdl.next(it, &e);
    CPPUNIT_ASSERT(more == false);

    bdl.restart();

    /* make sure it can be read again */
    for (i = 1; i <= ::count; i++)
    {
      more = bdl.next(it, &e);

      if (!more)
        cerr << i << endl;

      CPPUNIT_ASSERT(more == true);
      CPPUNIT_ASSERT(e.first == i && e.second == i);
    }

    more = bdl.next(it, &e);
    CPPUNIT_ASSERT(more == false);
  }

  void BandedDL_as_WSDL_2()
  {
    BucketDL<ElementType> bucketDL(::buckets, 1, 1000, BandGrouper());
    uint32_t last, i, it;
    ElementType dle;
    bool more;

    srand(time(NULL));

    for (i = 0; i < ::count; i++)
    {
      dle.first = dle.second = rand() % ::count;  // artificial max
      bucketDL.insert(dle);
    }

    bucketDL.endOfInput();

    // 		cout << "made bucketdl" << endl;

    BandedDL<ElementType> bdl(bucketDL, 1);

    //  		cout << "made bandeddl" << endl;

    it = bdl.getIterator();
    last = 0;
    // duplicates were removed, there won't be ::count elements in bdl
    more = bdl.next(it, &dle);

    while (more)
    {
      CPPUNIT_ASSERT(dle.first < (uint64_t)::count);
      //  			cout << dle.first << " >= " << last << endl;
      CPPUNIT_ASSERT(dle.first >= last);
      last = dle.first;
      more = bdl.next(it, &dle);
    }

    // 		cerr << "read through bandeddl" << endl;

    more = bdl.next(it, &dle);
    CPPUNIT_ASSERT(more == false);
  }

  void ZDL_bench()
  {
    ZDL<ElementType> zdl(4);
    zdl.setMultipleProducers(true);
    ElementType dle;
    uint32_t i, id;
    bool nextRet;
    uint32_t numOfProducers = 8;
    uint32_t numOfConsumers = 4;
    pthread_t producer[numOfProducers];
    pthread_t consumer[numOfConsumers];
    struct timespec ts1, ts2, diff;

    clock_gettime(CLOCK_REALTIME, &ts1);

    for (i = 0; i < numOfProducers; i++)
      pthread_create(&producer[i], NULL, ZDL_producer, &zdl);

    for (i = 0; i < numOfConsumers; i++)
      pthread_create(&consumer[i], NULL, ZDL_consumer, &zdl);

    for (i = 0; i < numOfThreads; i++)
      pthread_join(producer[i], NULL);

    zdl.endOfInput();

    // clock_gettime(CLOCK_REALTIME, &ts1);
    id = w.getIterator();

    for (i = 0; i < ::count * 8; i++)
    {
      nextRet = w.next(id, &dle);
    }

    clock_gettime(CLOCK_REALTIME, &ts2);
    timespec_sub(ts1, ts2, diff);
    cout << "end of input size is " << w.totalSize() << endl;
    cout << "ZDL_consumer_producer_bench: producer & consumer passed " << ::count * numOfProducers
         << " elements in " << diff.tv_sec << "s " << diff.tv_nsec << "ns" << endl;
  }

  /* Sanity test */
  void polymorphism_1()
  {
    DataList<DLElement>* dl;
    FIFO<DLElement>* f;
    DLElement dle;
    int it, i;
    bool more;

    f = new FIFO<DLElement>(1, 20);
    dl = (DataList<DLElement>*)f;

    it = dl->getIterator();

    for (i = 0; i < 10; i++)
    {
      dle.i = i;
      dl->insert(dle);
    }

    dl->endOfInput();

    for (i = 0; i < 10; i++)
    {
      more = dl->next(it, &dle);
      // 			cout << dle.i << endl;
      CPPUNIT_ASSERT(more == true);
      CPPUNIT_ASSERT(dle.i == i);
    }

    delete f;
  }

  /* Sanity test 2. Can we stuff basic datatypes into DataLists?  Apparently not.  WHY?*/
  void polymorphism_2()
  {
    DataList<int>* dl;
    FIFO<int>* f = new FIFO<int>(1, 20);
    int it, i, dle;
    bool more;

    dl = (DataList<int>*)f;

    it = dl->getIterator();

    for (i = 0; i < 10; i++)
      dl->insert(i);

    dl->endOfInput();

    for (i = 0; i < 10; i++)
    {
      more = dl->next(it, &dle);
      CPPUNIT_ASSERT(more == true);
      CPPUNIT_ASSERT(dle == i);
      // 			cout << "dle[" << i << "]: " << dle << endl;
    }

    delete f;
  }

  void polymorphism_3()
  {
    DataList<DLElement>* dl;
    FIFO<DLElement>* f;
    int it, i;
    DLElement dle;
    bool more;

    f = new FIFO<DLElement>(1, 20);
    dl = (DataList<DLElement>*)f;

    it = dl->getIterator();

    for (i = 0; i < 10; i++)
    {
      dle.i = i;
      f->insert(dle);
    }

    f->endOfInput();

    for (i = 0; i < 10; i++)
    {
      // 			cout << "next" << endl;
      more = dl->next(it, &dle);
      CPPUNIT_ASSERT(more == true);
      CPPUNIT_ASSERT(dle.i == i);
      //  			cout << "dle[" << i << "]: " << dle.i << endl;
    }

    delete f;
  }
};

CPPUNIT_TEST_SUITE_REGISTRATION(DataListDriver);

int main(int argc, char** argv)
{
  CppUnit::TextUi::TestRunner runner;
  CppUnit::TestFactoryRegistry& registry = CppUnit::TestFactoryRegistry::getRegistry();
  runner.addTest(registry.makeTest());
  bool wasSuccessful = runner.run("", false);
  return (wasSuccessful ? 0 : 1);
}