org.mini2Dx.core.collections.concurrent

Class ConcurrentIntIntMap

java.lang.Object

org.mini2Dx.gdx.utils.IntIntMap

org.mini2Dx.core.collections.concurrent.ConcurrentIntIntMap

All Implemented Interfaces:

java.lang.Iterable<org.mini2Dx.gdx.utils.IntIntMap.Entry>, ConcurrentCollection

public class ConcurrentIntIntMap
extends org.mini2Dx.gdx.utils.IntIntMap
implements ConcurrentCollection

Nested Class Summary

Nested classes/interfaces inherited from class org.mini2Dx.gdx.utils.IntIntMap

org.mini2Dx.gdx.utils.IntIntMap.Entries, org.mini2Dx.gdx.utils.IntIntMap.Entry, org.mini2Dx.gdx.utils.IntIntMap.Keys, org.mini2Dx.gdx.utils.IntIntMap.Values

Field Summary

Fields

Modifier and Type	Field and Description
protected org.mini2Dx.lockprovider.ReadWriteLock	lock

Fields inherited from class org.mini2Dx.gdx.utils.IntIntMap

mask, shift, size

Constructor Summary

Constructors

Constructor and Description
ConcurrentIntIntMap() Creates a new map with an initial capacity of 51 and a load factor of 0.8.
ConcurrentIntIntMap(int initialCapacity) Creates a new map with a load factor of 0.8.
ConcurrentIntIntMap(int initialCapacity, float loadFactor) Creates a new map with the specified initial capacity and load factor.
ConcurrentIntIntMap(org.mini2Dx.gdx.utils.IntIntMap map) Creates a new map identical to the specified map.

Method Summary

Modifier and Type	Method and Description
void	clear()
void	clear(int maximumCapacity) Clears the map and reduces the size of the backing arrays to be the specified capacity if they are larger.
boolean	containsKey(int key)
boolean	containsValue(int value) Returns true if the specified value is in the map.
void	ensureCapacity(int additionalCapacity) Increases the size of the backing array to accommodate the specified number of additional items.
org.mini2Dx.gdx.utils.IntIntMap.Entries	entries() Returns an iterator for the entries in the map.
boolean	equals(java.lang.Object obj)
int	findKey(int value, int notFound) Returns the key for the specified value, or null if it is not in the map.
int	get(int key, int defaultValue)
int	getAndIncrement(int key, int defaultValue, int increment) Returns the key's current value and increments the stored value.
org.mini2Dx.lockprovider.ReadWriteLock	getLock() Returns the collection's ReadWriteLock
int	hashCode()
boolean	isEmpty() Returns true if the map is empty.
org.mini2Dx.gdx.utils.IntIntMap.Keys	keys() Returns an iterator for the keys in the map.
boolean	notEmpty() Returns true if the map has one or more items.
void	put(int key, int value)
int	put(int key, int value, int defaultValue)
void	putAll(org.mini2Dx.gdx.utils.IntIntMap map)
boolean	putIfAbsent(int key, int value) Puts a key/value if the key is not already present
boolean	putIfPresent(int key, int value) Puts a key/value if the key is already present
int	remove(int key, int defaultValue)
void	shrink(int maximumCapacity) Reduces the size of the backing arrays to be the specified capacity or less.
int	size() Returns the size in a thread-safe manner
java.lang.String	toString()
org.mini2Dx.gdx.utils.IntIntMap.Values	values() Returns an iterator for the values in the map.

Methods inherited from class org.mini2Dx.gdx.utils.IntIntMap

iterator, place

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Field Detail

lock

protected org.mini2Dx.lockprovider.ReadWriteLock lock

Constructor Detail

ConcurrentIntIntMap

public ConcurrentIntIntMap()

Creates a new map with an initial capacity of 51 and a load factor of 0.8.

ConcurrentIntIntMap

public ConcurrentIntIntMap(int initialCapacity)

Creates a new map with a load factor of 0.8.

Parameters:

initialCapacity - If not a power of two, it is increased to the next nearest power of two.

ConcurrentIntIntMap

public ConcurrentIntIntMap(int initialCapacity,
                           float loadFactor)

Creates a new map with the specified initial capacity and load factor. This map will hold initialCapacity items before growing the backing table.

Parameters:

initialCapacity - If not a power of two, it is increased to the next nearest power of two.

loadFactor -

ConcurrentIntIntMap

public ConcurrentIntIntMap(org.mini2Dx.gdx.utils.IntIntMap map)

Creates a new map identical to the specified map. NOTE: read access to the other map is not thread-safe

Parameters:

map -

Method Detail

size

public int size()

Returns the size in a thread-safe manner

Returns:

0 if empty

put

public void put(int key,
                int value)

Overrides:

put in class org.mini2Dx.gdx.utils.IntIntMap

putIfAbsent

public boolean putIfAbsent(int key,
                           int value)

Puts a key/value if the key is not already present

Parameters:

key - The key to put if absent

value - The value to put if absent

Returns:

True if the value was put

putIfPresent

public boolean putIfPresent(int key,
                            int value)

Puts a key/value if the key is already present

Parameters:

key - The key to put if present

value - The value to put if present

Returns:

True if the value was put

put

public int put(int key,
               int value,
               int defaultValue)

Overrides:

put in class org.mini2Dx.gdx.utils.IntIntMap

putAll

public void putAll(org.mini2Dx.gdx.utils.IntIntMap map)

Overrides:

putAll in class org.mini2Dx.gdx.utils.IntIntMap

get

public int get(int key,
               int defaultValue)

Overrides:

get in class org.mini2Dx.gdx.utils.IntIntMap

Parameters:

key -

defaultValue - Returned if the key was not associated with a value.

getAndIncrement

public int getAndIncrement(int key,
                           int defaultValue,
                           int increment)

Returns the key's current value and increments the stored value. If the key is not in the map, defaultValue + increment is put into the map.

Overrides:

getAndIncrement in class org.mini2Dx.gdx.utils.IntIntMap

Parameters:

key -

defaultValue -

increment -

remove

public int remove(int key,
                  int defaultValue)

Overrides:

remove in class org.mini2Dx.gdx.utils.IntIntMap

notEmpty

public boolean notEmpty()

Returns true if the map has one or more items.

Overrides:

notEmpty in class org.mini2Dx.gdx.utils.IntIntMap

isEmpty

public boolean isEmpty()

Returns true if the map is empty.

Overrides:

isEmpty in class org.mini2Dx.gdx.utils.IntIntMap

shrink

public void shrink(int maximumCapacity)

Reduces the size of the backing arrays to be the specified capacity or less. If the capacity is already less, nothing is done. If the map contains more items than the specified capacity, the next highest power of two capacity is used instead.

Overrides:

shrink in class org.mini2Dx.gdx.utils.IntIntMap

Parameters:

maximumCapacity -

clear

public void clear(int maximumCapacity)

Clears the map and reduces the size of the backing arrays to be the specified capacity if they are larger.

Overrides:

clear in class org.mini2Dx.gdx.utils.IntIntMap

Parameters:

maximumCapacity -

clear

public void clear()

Overrides:

clear in class org.mini2Dx.gdx.utils.IntIntMap

containsValue

public boolean containsValue(int value)

Returns true if the specified value is in the map. Note this traverses the entire map and compares every value, which may be an expensive operation.

Overrides:

containsValue in class org.mini2Dx.gdx.utils.IntIntMap

Parameters:

value -

containsKey

public boolean containsKey(int key)

Overrides:

containsKey in class org.mini2Dx.gdx.utils.IntIntMap

findKey

public int findKey(int value,
                   int notFound)

Returns the key for the specified value, or null if it is not in the map. Note this traverses the entire map and compares every value, which may be an expensive operation.

Overrides:

findKey in class org.mini2Dx.gdx.utils.IntIntMap

Parameters:

value -

notFound -

ensureCapacity

public void ensureCapacity(int additionalCapacity)

Increases the size of the backing array to accommodate the specified number of additional items. Useful before adding many items to avoid multiple backing array resizes.

Overrides:

ensureCapacity in class org.mini2Dx.gdx.utils.IntIntMap

Parameters:

additionalCapacity -

hashCode

public int hashCode()

Overrides:

hashCode in class org.mini2Dx.gdx.utils.IntIntMap

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class org.mini2Dx.gdx.utils.IntIntMap

toString

public java.lang.String toString()

Overrides:

toString in class org.mini2Dx.gdx.utils.IntIntMap

entries

public org.mini2Dx.gdx.utils.IntIntMap.Entries entries()

Returns an iterator for the entries in the map. Remove is supported.

Overrides:

entries in class org.mini2Dx.gdx.utils.IntIntMap

values

public org.mini2Dx.gdx.utils.IntIntMap.Values values()

Returns an iterator for the values in the map. Remove is supported.

Overrides:

values in class org.mini2Dx.gdx.utils.IntIntMap

keys

public org.mini2Dx.gdx.utils.IntIntMap.Keys keys()

Returns an iterator for the keys in the map. Remove is supported.

Overrides:

keys in class org.mini2Dx.gdx.utils.IntIntMap

getLock

public org.mini2Dx.lockprovider.ReadWriteLock getLock()

Description copied from interface: ConcurrentCollection

Returns the collection's ReadWriteLock

Specified by:

getLock in interface ConcurrentCollection

Returns:

the collection's ReadWriteLock