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dl |
1.2 |
/* |
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* Written by Doug Lea with assistance from members of JCP JSR-166 |
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* Expert Group and released to the public domain, as explained at |
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jsr166 |
1.5 |
* http://creativecommons.org/publicdomain/zero/1.0/ |
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dl |
1.2 |
*/ |
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dl |
1.1 |
import java.util.*; |
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import java.util.concurrent.*; |
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import java.util.concurrent.locks.*; |
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/** |
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* This is an incomplete implementation of a wrapper class |
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* that places read-write locks around unsynchronized Maps. |
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* Exists as a sample input for MapLoops test. |
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*/ |
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public class RLMap implements Map { |
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private final Map m; |
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private final ReentrantLock rl = new ReentrantLock(); |
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jsr166 |
1.3 |
|
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dl |
1.1 |
public RLMap(Map m) { |
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if (m == null) |
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throw new NullPointerException(); |
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this.m = m; |
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} |
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jsr166 |
1.3 |
public RLMap() { |
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dl |
1.1 |
this(new TreeMap()); // use TreeMap by default |
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} |
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public int size() { |
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rl.lock(); try {return m.size();} finally { rl.unlock(); } |
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} |
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jsr166 |
1.4 |
public boolean isEmpty() { |
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dl |
1.1 |
rl.lock(); try {return m.isEmpty();} finally { rl.unlock(); } |
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} |
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public Object get(Object key) { |
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rl.lock(); try {return m.get(key);} finally { rl.unlock(); } |
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} |
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public boolean containsKey(Object key) { |
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rl.lock(); try {return m.containsKey(key);} finally { rl.unlock(); } |
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} |
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jsr166 |
1.4 |
public boolean containsValue(Object value) { |
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dl |
1.1 |
rl.lock(); try {return m.containsValue(value);} finally { rl.unlock(); } |
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} |
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public Set keySet() { // Not implemented |
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return m.keySet(); |
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} |
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jsr166 |
1.3 |
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dl |
1.1 |
public Set entrySet() { // Not implemented |
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return m.entrySet(); |
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} |
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jsr166 |
1.3 |
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dl |
1.1 |
public Collection values() { // Not implemented |
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return m.values(); |
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} |
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jsr166 |
1.3 |
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dl |
1.1 |
public boolean equals(Object o) { |
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rl.lock(); try {return m.equals(o);} finally { rl.unlock(); } |
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} |
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public int hashCode() { |
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rl.lock(); try {return m.hashCode();} finally { rl.unlock(); } |
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} |
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public String toString() { |
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rl.lock(); try {return m.toString();} finally { rl.unlock(); } |
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} |
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public Object put(Object key, Object value) { |
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rl.lock(); try {return m.put(key, value);} finally { rl.unlock(); } |
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} |
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public Object remove(Object key) { |
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rl.lock(); try {return m.remove(key);} finally { rl.unlock(); } |
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} |
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public void putAll(Map map) { |
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rl.lock(); try {m.putAll(map);} finally { rl.unlock(); } |
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} |
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public void clear() { |
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rl.lock(); try {m.clear();} finally { rl.unlock(); } |
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} |
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jsr166 |
1.3 |
|
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dl |
1.1 |
} |
