Exemplo n.º 1
0
void collisionTest() {
    printf("test collision add/remove\n");
    
    HashTable<int,collisionHash,intEqual> collisiontable;
    for(int i=0;i<100;i++) {
	collisiontable.add(i);
    }
    for(int i=0;i<100;i+=2) {
	collisiontable.remove(i);
	size_t count = 0;
	for (HashTable<int,collisionHash,intEqual>::iterator i = collisiontable.begin();
	     i != collisiontable.end();i++) {
	    count++;
	}
	INVARIANT(count == collisiontable.size(),
		  boost::format("?! %d %d") % count % collisiontable.size());
    }

    // multiple adds of the same key are *supposed* to add multiple times.
    collisiontable.clear();
    SINVARIANT(collisiontable.size() == 0);
    for(int i=0;i<100;i++) {
	collisiontable.add(i);
	collisiontable.add(i);
    }
    SINVARIANT(collisiontable.size() == 200);

    // remove the keys (each twice)
    for(int i=0;i<100;i++) {
	collisiontable.remove(i, true);
	collisiontable.remove(i, true);
    }
    SINVARIANT(collisiontable.size() == 0);

    // an efficient way to do add/replace
    collisiontable.clear();
    SINVARIANT(collisiontable.size() == 0);
    for(int i=0;i<100;i++) {
	bool replaced;
	collisiontable.addOrReplace(i, replaced);
	SINVARIANT(replaced == false);
	collisiontable.addOrReplace(i, replaced);
	SINVARIANT(replaced == true);
    }
    SINVARIANT(collisiontable.size() == 100);

    // remove, add, remove the keys
    for(int i=0;i<100;i++) {
	collisiontable.remove(i, true);
	collisiontable.add(i);
	collisiontable.remove(i);
    }
    SINVARIANT(collisiontable.size() == 0);
}
void NodeController :: tryHash()
{
    HashTable<int> numbersInHash;
    numbersInHash.add(123);
    numbersInHash.add(342);
    numbersInHash.add(123423);
    numbersInHash.add(123413);
    numbersInHash.add(-213);
    numbersInHash.add(123);
    numbersInHash.add(142342352);
}
Exemplo n.º 3
0
    virtual Extent::Ptr getSharedExtent() {
        Extent::Ptr e = source.getSharedExtent();
        if (e == NULL) 
            return e;
        if (e->getTypePtr()->getName() != "NFS trace: attr-ops")
            return e;
        for (s.setExtent(e);s.morerecords();++s) {
            string fh = filehandle.stringval();
            bool skip = false;
            for (vector<string>::iterator i=ignore_filehandles.begin();
                i != ignore_filehandles.end();++i) {
                if (*i == fh) {
                    skip = true;
                    break;
                }
            }
            if (skip)
                continue;

            hteData *d = stats_table.lookup(hteData(type.stringval()));
            if (d == NULL) {
                hteData newd(type.stringval());
                newd.file_size = new Stats;
                d = stats_table.add(newd);
            }
            d->file_size->add(filesize.val());
        }
        return e;
    }
Exemplo n.º 4
0
void NodeController :: tryHash()
{
    HashTable<int> tempTable;
    HashNode<int> tempArray[10];
    for(int spot = 0; spot < 10; spot++)
    {
        int randomValue = rand();
        int randomKey = rand();
        HashNode<int> temp = HashNode<int>(randomKey, randomValue);
        tempTable.add(temp);
        tempArray[spot] = temp;
    }
    bool test = tempTable.contains(tempArray[3]);
    string result;
    if(test)
    {
        result = "It's there";
    }
    else
    {
        result = "Not anywhere";
    }
    cout << result << endl;
    
}
Exemplo n.º 5
0
void testGrow(){
  HashTable<std::string,int> testHash;
  testHash.add("0",0);
  unsigned long startingSize = testHash.backingArraySize;
  unsigned long i=0;
  while(testHash.backingArraySize == startingSize){
    i++;
    std::ostringstream ss;
    ss << i;
    testHash.add(ss.str(),i);
  }
  unsigned long endingSize = testHash.backingArraySize;
  if(i*2 > startingSize){
    std::cout << "ERROR: You didn't grown soon enough. Starting size was " << startingSize << ", didn't grow until " << i+1 << "adds done." << std::endl;
    return;
  } else {
    std::cout << "SUCCESS: Grow called at the right time. Starting size was " << startingSize << " and grow called on the " << i+1 << "th add call" << std::endl;
  }

  if(testHash.size() == i+1){
    std::cout << "SUCCESS: Size of hash table unchanged by the grow" << std::endl;
  } else {
    std::cout << "ERROR: Size of hash table should be " << i+1 << ", but got " << testHash.size() << std::endl;
    return;
  }

  if(testHash.numRemoved == 0){
    std::cout << "SUCCESS: After grow called, all removed items have been cleared out." << std::endl;
  } else {
    std::cout << "ERROR: When grow is called, you should clear out all the removed items." << std::endl;
    return;
  }

  for(unsigned long j=0; j<=i;j++){
    std::ostringstream ss;
    ss << j;
    if(!testHash.keyExists(ss.str())){
      std::cout << "ERROR: During grow the item with key '" << j << "' was lost" << std::endl;
      return;
    }
  }
  std::cout << "SUCCESS: After grow all items from the original table made it to the new one." << std::endl;
}
Exemplo n.º 6
0
void addEntry(HashTable<int> &HT, int x)			//add entry
{
	try
	{
		HT.add(x);									//add entry if possible
	}
	catch (EntryExists& err )						//show error if not
	{
		cout << "Exception: " << err.getMessage()
			<< endl << endl;		
	}
}
Exemplo n.º 7
0
void UnionHash(HashTable & h1, HashTable & h2)
{
  HashIterator iter(h2);
  iter.first();
  while (iter.isValid())
  {
    IMapping & cur = iter.query();
    IMapping * matched = h1.find(cur.getKey());
    if (!matched)
      h1.add(cur);
    iter.next();
  }
}
/*---------------------------------------------------------------------*//**
	アトムの登録
**//*---------------------------------------------------------------------*/
void EsKeywordSet::registerAtom(const EsAtom* atom)
{
	// ハッシュテーブルに追加する
	const VcString* str = atom->getString();
	HashTable* htbl = getHashTableInstance();
	EsAtom::EsAtomHashEntry* entity = (EsAtom::EsAtomHashEntry*)htbl->add(str);
	if(entity == 0L)
	{
		ASSERT(false);
		return;
	}
	entity->setAtom(atom);
}
Exemplo n.º 9
0
TEST(HashTableTest, IntKey)  {
	
	HashTable<uint,uint,IntHash> ht;
	
	EXPECT_EQ(0UL,ht.count());
	EXPECT_FALSE(ht.containsKey(1));
	ht.add(1,1);
	EXPECT_EQ(1UL,ht.count());
	EXPECT_TRUE(ht.containsKey(1));
	EXPECT_TRUE(ht.contains(1,1));
	ht[1] = 0;
	EXPECT_TRUE(ht[1] == 0U);
	ht.remove(1);
	EXPECT_EQ(0UL,ht.count());
}
Exemplo n.º 10
0
int main()
{
	double p;
	cin>>p;
	BloomFilter F(p);
	HashTable T;
	int n,k=0;
	string s;
	freopen("dictionary+text.txt","r",stdin);
	for(int i=1;i<=99431;i++)
	{
		cin>>s;
		F.add(s);
		T.add(s);
	}
	cin>>k;
	int rightF=0,rightT=0,wrongF=0,wrongT=0,BloomLies=0;
	for(int i=1;i<=k;i++)
	{
		cin>>s;

		if(F.find(s)) 
			rightF++;
		else wrongF++;

		if(T.find(s)) 
			rightT++;
		else wrongT++;

		BloomLies=rightF-rightT;
	}

	cout<<rightF<<' '<<wrongF<<' '<<BloomLies;

	return 0;
}
Exemplo n.º 11
0
static Word* Word::newWord      // GET NEW WORD
    ( const char *chrs          // - characters in word
    , unsigned size )           // - # characters
{

    static HashTable wordTable  // hash table
        ( &Word::hashFun
        , &Word::hashCompare);

    Word* curr;                 // - current word
    _chr_vect vect              // - character vector
        = { chrs, size };

    curr = (Word *)wordTable.find( &vect );
    if( 0 == curr ) {
        curr = (Word*)wordCarver.alloc();
        curr = new( curr ) Word( chrs, size );
        wordRing.append( curr );
        wordTable.add( curr, &vect );
    } else {
        ++ curr->_count;
    }
    return curr;
}
Exemplo n.º 12
0
//Add and remove some items, making sure they come back in the
// correct order
void testBasicMethods(){
  HashTable<std::string,int> testHash;
  testHash.add("how",0);
  testHash.add("now",1);
  testHash.add("brown",2);
  testHash.add("cow",3);
  testHash.add("metal",4);
  testHash.add("daffodil",5);

  if(testHash.size() == 6){
    std::cout << "SUCCESS: 6 items added" << std::endl;
  } else {
    std::cout << "ERROR: Added 6 items, but size says " << testHash.size() << std::endl;
    return;
  }
  
  int x0 = testHash.find("how");
  int x1 = testHash.find("now");
  int x2 = testHash.find("brown");
  int x3 = testHash.find("cow");
  int x4 = testHash.find("metal");
  int x5 = testHash.find("daffodil");

  if(x0 != 0 || x1 != 1 || x2 != 2 || x3 != 3 || x4 != 4 || x5 != 5){
    std::cout << "ERROR: Expected 0,1,2,3,4,5, but got " << x0 <<"," << x1 << "," << x2 << "," << x3 << "," << x4 << "," << x5 << std::endl;
    return;
  } else {
    std::cout << "SUCCESS: 6 added items came back out with correct keys" << std::endl;
  }
  
  if(testHash.keyExists("daffodil")){
    std::cout << "SUCCESS: keyExists found 'daffodil'" << std::endl;
  } else {
    std::cout << "ERROR: 'daffodil' is a valid key, but keyExists said false" << std::endl;
    return;
  }

  if(!testHash.keyExists("shiny")){
    std::cout << "SUCCESS: keyExists did not find 'shiny'" << std::endl;
  } else {
    std::cout << "ERROR: 'shiny' is not a valid key, but keyExists said true" << std::endl;
    return;
  }

  bool didException = false;
  try {

    int xq = testHash.find("shiny");

  } catch (std::string s) {
    std::cout << "SUCCESS: Caught exception: " << s << std::endl;
    didException = true;
  } catch (...) {
    std::cout << "ERROR: Caught an exception, but it wasn't a string type" << std::endl;
    return;
  }
  if(didException == false){
    std::cout << "ERROR: find did not throw an exception when given a non-existen key" << std::endl;
    return;
  }
  
  testHash.remove("how");
  testHash.remove("now");

  if(testHash.size() == 4){
    std::cout << "SUCCESS: 4 items after removing" << std::endl;
  } else {
    std::cout << "ERROR: After remove, expected 4 items, but size says " << testHash.size() << std::endl;
    return;
  }

  if(testHash.numRemoved == 2){
    std::cout << "SUCCESS: numRemoved is 2, as expected" << std::endl;
  } else {
    std::cout << "ERROR: After remove, expected numRemoved == 2, but got " << testHash.numRemoved << std::endl;
    return;
  }

  if(testHash.keyExists("how") == false){
    std::cout << "SUCCESS: Removed key 'how' is no longer in hash table." << std::endl;
  } else {
    std::cout << "ERROR: Removed key 'how' is still in the table" << std::endl;
    return;
  }

  if(testHash.keyExists("brown") && testHash.keyExists("cow") &&
       testHash.keyExists("metal") && testHash.keyExists("daffodil")){
    std::cout << "SUCCESS: The 4 items that weren't removed are still in the table." << std::endl;
  } else {
    std::cout << "ERROR: One of the 4 keys that ought to still be in the table has been lost" << std::endl;
    return;
  }
}
Exemplo n.º 13
0
    virtual Extent::Ptr getSharedExtent() {
        long long reltime;
        Extent::Ptr e = source.getSharedExtent();
        if (e == NULL) 
            return e;
        SINVARIANT(e->getTypePtr()->getName() == "common-attr-rw-join");

        hteData k;
        for (s.setExtent(e);s.morerecords();++s) {
            if (starttime == -1)
                starttime = packet_at.val();
            // cout << "Found " << operation.stringval() << "\n";
            if (operation.equal(str_read) == false)
                continue;
            ExtentType::int64 file_age = packet_at.val() - modify_time.val();
   
            k.filehandle = filehandle.stringval();
            k.server = serverip.val(); // this is return packet, so server ip
            // is in sourceip
            // cout << "ip: " << ipstring(sourceip.val()).c_str() << "\n";
            reltime = packet_at.val() - starttime;
            hteData *v = seen.lookup(k);
            if (v == NULL) {
                seen.add(k);

                // recent-cache misses
                cum1 += filesize.val();
                n1++;
                e1.time = reltime;
                e1.bytes = cum1;
                e1.n = n1;
                
                if ((double)(reltime - last1)/1000000 > NFSDSAnalysisMod::read_sampling || last1 == -1)
                {
                    last1 = reltime;
                    list1.push_back(e1);
                }

                fflush(stdout);
                if (file_age / 1.0e9 < RECENTAGE) // newly changed file
                {
                    // all-cache misses
                    fflush(stdout);
                    cum2 += filesize.val();
                    n2++;
                    e2.time = reltime;
                    e2.bytes = cum2;
                    e2.n = n2;
                    if ((double)(reltime - last2)/1000000 > NFSDSAnalysisMod::read_sampling || last2 == -1)
                    {
                        last2 = reltime;
                        list2.push_back(e2);
                    }
                }
            }
            else // hits cache of recent files
            {
                if (file_age / 1.0e9 < RECENTAGE) // newly changed file
                {
                    cum4 += in_bytes.val();
                    n4++;
                    e4.time = reltime;
                    e4.bytes = cum4;
                    e4.n = n4;
                    if ((double)(reltime - last4)/1000000 > NFSDSAnalysisMod::read_sampling || last4 == -1)
                    {
                        last4 = reltime;
                        list4.push_back(e4);
                    }
                }
            }
            if (file_age / 1.0e9 >= RECENTAGE) // hits cache of old files
            {
                cum3 += in_bytes.val();
                n3++;
                e3.time = reltime;
                e3.bytes = cum3;
                e3.n = n3;
                if ((double)(reltime - last3)/1000000 > NFSDSAnalysisMod::read_sampling || last3 == -1)
                {
                    last3 = reltime;
                    list3.push_back(e3);
                }
            }
        }
        return e;
    }
Exemplo n.º 14
0
/**
 * For internal use only.
 */
void AbstractType::initialize(void) {
	types.add(name(), this);
}
Exemplo n.º 15
0
/**
 * MAIN USER INTERFACE
 */
int main() {
    // init hash table
    HashTable h;

    // read in csv
    string line;
    ifstream file("randomNames.csv");
    if (file.is_open()) {
        while (getline(file, line)) {
            int day = 0;
            int month = 0;
            int year = 0;

            // separate name and date
            int comma = line.find(",");
            string name = line.substr(0, comma);
            string date = line.substr(comma+1, line.length());

            // get day
            int firstSlash = date.find("/");
            string strDay = date.substr(0, firstSlash);
            day = atoi(strDay.c_str());

            // get month
            int secondSlash = date.find("/", firstSlash + 1);
            string strMonth = date.substr(firstSlash + 1, secondSlash);
            month = atoi(strMonth.c_str());

            // get year
            string strYear = date.substr(secondSlash + 1, date.length());
            year = atoi(strYear.c_str());

            // add anonymous date (doesn't matter it's copied into hash table)
            h.add(Date(month, day, year), name);
        }
    }

    // init vars
    int day = 0;
    int month = 0;
    int year = 0;

    // prompt user
    cout << "Input date to search: " << endl;

    // get day
    cout << "day => ";
    cin >> day;

    // get month
    cout << "month => ";
    cin >> month;

    // get year
    cout << "year => ";
    cin >> year;

    cout << endl;

    // if valid date
    if (day > 0 && day < 32
        && month > 0 && month < 13
        && year > 0) {

        try {
            // retrieve names
            vector<string> v = h.getNames(Date(month, day, year));

            cout << "Birthdays on this day: " << endl;
            cout << "----------------------- " << endl;

            // print out names
            for (int i = 0; i < v.size(); i++) {
                cout << v[i] << endl;
            }

        } catch(int e) {
            cout << "No birthdays found!" << endl;
        }
    }

    else {
        cout << "Invalid date, exiting...";
        return -1;
    }

    return 0;
}