com.goldencode.p2j.util

Class SourceNameMapper.SourceNameMapperCache

java.lang.Object

com.goldencode.p2j.util.SourceNameMapper.SourceNameMapperCache

Enclosing class:

SourceNameMapper

private static class SourceNameMapper.SourceNameMapperCache
extends java.lang.Object

A cache class that contains the propath and a map of indexes for search-specs mapped to their target procedures (the result obtained from SourceNameMapper.fastConvertName(String)). The propath is used for double-checking the cache when it is read.

Field Summary

Fields

Modifier and Type	Field and Description
private LRUCache<java.lang.Integer,java.lang.String[]>	convertedNames A map of program indexes mapped to their target procedures.
private java.util.concurrent.locks.ReentrantReadWriteLock	lock Lock for read/write operations related to convertedNames.
private java.lang.String[]	propath Propath for which the cache was created

Constructor Summary

Constructors

Modifier	Constructor and Description
private	SourceNameMapperCache(java.lang.String[] propath, LRUCache<java.lang.Integer,java.lang.String[]> convertedNames) Constructor

Method Summary

Modifier and Type	Method and Description
private void	addResolvedProgram(java.lang.Integer programIndex, java.lang.String[] result) Add a new converted result of a program using the index of the program.
private java.lang.String[]	getPropath() Returns the propath of the cache.
private java.lang.String[]	getResolvedProgram(java.lang.Integer programIndex) Given an index of a program name, check if it is mapped to any target procedure and return it if so.
private boolean	hasProgram(java.lang.Integer programIndex) Check if the given program name has an entry in the converted names map.
private void	readLock() Lock read operation.
private void	readUnlock() Unlock read operation.
private void	writeLock() Lock write operation.
private void	writeUnlock() Unlock write operation.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

propath

private java.lang.String[] propath

Propath for which the cache was created

convertedNames

private LRUCache<java.lang.Integer,java.lang.String[]> convertedNames

A map of program indexes mapped to their target procedures. The program index is obtained from SourceNameMapper.initializationPaths and is used instead of the search-spec to reduce the number of Java Strings being used.

lock

private java.util.concurrent.locks.ReentrantReadWriteLock lock

Lock for read/write operations related to convertedNames.

Constructor Detail

SourceNameMapperCache

private SourceNameMapperCache(java.lang.String[] propath,
                              LRUCache<java.lang.Integer,java.lang.String[]> convertedNames)

Constructor

Parameters:

propath - The propath for which the cache is created.

convertedNames - Initial map of indexed search-specs mapped to their target procedure.

Method Detail

getPropath

private java.lang.String[] getPropath()

Returns the propath of the cache.

Returns:

the propath

hasProgram

private boolean hasProgram(java.lang.Integer programIndex)

Check if the given program name has an entry in the converted names map.

Parameters:

programIndex - The index of the program name that is checked.

Returns:

true if the program was previously converted and has an entry in the map, false otherwise.

getResolvedProgram

private java.lang.String[] getResolvedProgram(java.lang.Integer programIndex)

Given an index of a program name, check if it is mapped to any target procedure and return it if so.

Parameters:

programIndex - The index of the program name that is searched.

Returns:

The target procedure or null if there is none;

addResolvedProgram

private void addResolvedProgram(java.lang.Integer programIndex,
                                java.lang.String[] result)

Add a new converted result of a program using the index of the program.

Parameters:

programIndex - The index of the program which is used as key.

result - The result obtained from fastConvertName of the program.

readLock

private void readLock()

Lock read operation.

readUnlock

private void readUnlock()

Unlock read operation.

writeLock

private void writeLock()

Lock write operation.

writeUnlock

private void writeUnlock()

Unlock write operation.