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Code Issues Releases Wiki Activity

bug fixed for oom

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This commit is contained in:
wenshao
2012-08-29 15:59:36 +08:00
parent dd687fcd36
commit 4f62fa4a4b
1 changed files with 13 additions and 4 deletions
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src/main/java/com/alibaba/druid/sql/parser/SymbolTable.java
+13 -4
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@@ -27,14 +27,18 @@ public class SymbolTable {
/** Default table size. */
public static final int DEFAULT_TABLE_SIZE = 128;
public static final int MAX_SIZE = 1024;
/** Buckets. */
private final Entry[] buckets;
private final String[] symbols;
private final char[][] symbols_char;
private final char[][] symbolsChar;
// actual table size
private final int indexMask;
private int size = 0;
//
// Constructors
//
@@ -49,7 +53,7 @@ public class SymbolTable {
this.indexMask = tableSize - 1;
this.buckets = new Entry[tableSize];
this.symbols = new String[tableSize];
this.symbols_char = new char[tableSize][];
this.symbolsChar = new char[tableSize][];
}
//
@@ -97,7 +101,7 @@ public class SymbolTable {
if (sym != null) {
if (sym.length() == len) {
char[] characters = symbols_char[bucket];
char[] characters = symbolsChar[bucket];
for (int i = 0; i < len; i++) {
if (buffer[offset + i] != characters[i]) {
@@ -125,14 +129,19 @@ public class SymbolTable {
return entry.symbol;
}
}
if (size >= MAX_SIZE) {
return new String(buffer, offset, len);
}
// add new entry
Entry entry = new Entry(buffer, offset, len, hash, buckets[bucket]);
buckets[bucket] = entry;
if (match) {
symbols[bucket] = entry.symbol;
symbols_char[bucket] = entry.characters;
symbolsChar[bucket] = entry.characters;
}
size++;
return entry.symbol;
} // addSymbol(char[],int,int):String