69 lines
2.0 KiB
C++
69 lines
2.0 KiB
C++
/*
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*******************************************************************************
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* Copyright (C) 1997-1999, International Business Machines Corporation and *
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* others. All Rights Reserved. *
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*******************************************************************************
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*/
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//===============================================================================
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//
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// File colcache.cpp
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//
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// CollationCache implements a persistent in-memory cache for
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// TableCollationData objects. The goal of CollationCache is to improve
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// the memory footprint of a process which may have multiple threads
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// loading up the same TableCollation object. Performance improvement is
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// strictly a secondary goal.
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//
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// Created by: Alan Liu
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//
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// Modification History:
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//
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// Date Name Description
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// 2/11/97 aliu Creation.
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// 2/12/97 aliu Modified to work with TableCollationData.
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//
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//===============================================================================
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#include "colcache.h"
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#include "tcoldata.h"
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#include "uhash.h"
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#ifdef COLLDEBUG
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#include <iostream.h>
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#endif
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//--------------------------------------------------------------------------------
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// CollationCache implementation
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//--------------------------------------------------------------------------------
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static void U_CALLCONV deleteTCD(void* TCD)
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{
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delete (TableCollationData*)TCD;
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}
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CollationCache::CollationCache()
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{
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UErrorCode err = U_ZERO_ERROR;
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fHashtable = uhash_open((UHashFunction) uhash_hashUString, &err);
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uhash_setValueDeleter(fHashtable, deleteTCD);
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}
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CollationCache::~CollationCache()
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{
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uhash_close(fHashtable);
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}
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void CollationCache::Add(const UnicodeString& key, TableCollationData* value)
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{
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UErrorCode err = U_ZERO_ERROR;
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TableCollationData* previous = (TableCollationData*)uhash_putKey(fHashtable, key.hashCode() & 0x7FFFFFFF , value, &err);
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}
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TableCollationData* CollationCache::Find(const UnicodeString& keyString)
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{
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return (TableCollationData*)uhash_get(fHashtable,keyString.hashCode() & 0x7FFFFFFF);
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}
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//eof
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