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/* |
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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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* http://creativecommons.org/licenses/publicdomain |
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* http://creativecommons.org/publicdomain/zero/1.0/ |
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*/ |
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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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/** |
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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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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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public RLMap() { |
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public RLMap() { |
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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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public boolean isEmpty(){ |
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public boolean isEmpty() { |
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rl.lock(); try {return m.isEmpty();} 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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public boolean containsValue(Object value){ |
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public boolean containsValue(Object value) { |
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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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public Set entrySet() { // Not implemented |
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return m.entrySet(); |
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} |
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public Collection values() { // Not implemented |
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return m.values(); |
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} |
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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 void clear() { |
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rl.lock(); try {m.clear();} finally { rl.unlock(); } |
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} |
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} |
