--- a/hotspot/src/share/vm/classfile/symbolTable.hpp Fri Jun 14 08:02:32 2013 +0200
+++ b/hotspot/src/share/vm/classfile/symbolTable.hpp Tue Jun 18 12:31:07 2013 -0700
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -246,12 +246,19 @@
// Set if one bucket is out of balance due to hash algorithm deficiency
static bool _needs_rehashing;
+ // Claimed high water mark for parallel chunked scanning
+ static volatile int _parallel_claimed_idx;
+
static oop intern(Handle string_or_null, jchar* chars, int length, TRAPS);
oop basic_add(int index, Handle string_or_null, jchar* name, int len,
unsigned int hashValue, TRAPS);
oop lookup(int index, jchar* chars, int length, unsigned int hashValue);
+ // Apply the give oop closure to the entries to the buckets
+ // in the range [start_idx, end_idx).
+ static void buckets_do(OopClosure* f, int start_idx, int end_idx);
+
StringTable() : Hashtable<oop, mtSymbol>((int)StringTableSize,
sizeof (HashtableEntry<oop, mtSymbol>)) {}
@@ -277,9 +284,12 @@
unlink_or_oops_do(cl, NULL);
}
- // Invoke "f->do_oop" on the locations of all oops in the table.
+ // Serially invoke "f->do_oop" on the locations of all oops in the table.
static void oops_do(OopClosure* f);
+ // Possibly parallel version of the above
+ static void possibly_parallel_oops_do(OopClosure* f);
+
// Hashing algorithm, used as the hash value used by the
// StringTable for bucket selection and comparison (stored in the
// HashtableEntry structures). This is used in the String.intern() method.
@@ -315,5 +325,8 @@
// Rehash the symbol table if it gets out of balance
static void rehash_table();
static bool needs_rehashing() { return _needs_rehashing; }
+
+ // Parallel chunked scanning
+ static void clear_parallel_claimed_index() { _parallel_claimed_idx = 0; }
};
#endif // SHARE_VM_CLASSFILE_SYMBOLTABLE_HPP