1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/vm/gc_implementation/g1/g1StringDedupThread.hpp Tue Mar 18 19:07:22 2014 +0100
1.3 @@ -0,0 +1,56 @@
1.4 +/*
1.5 + * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + *
1.26 + */
1.27 +
1.28 +#ifndef SHARE_VM_GC_IMPLEMENTATION_G1_G1STRINGDEDUPTHREAD_HPP
1.29 +#define SHARE_VM_GC_IMPLEMENTATION_G1_G1STRINGDEDUPTHREAD_HPP
1.30 +
1.31 +#include "gc_implementation/g1/g1StringDedupStat.hpp"
1.32 +#include "gc_implementation/shared/concurrentGCThread.hpp"
1.33 +
1.34 +//
1.35 +// The deduplication thread is where the actual deduplication occurs. It waits for
1.36 +// deduplication candidates to appear on the deduplication queue, removes them from
1.37 +// the queue and tries to deduplicate them. It uses the deduplication hashtable to
1.38 +// find identical, already existing, character arrays on the heap. The thread runs
1.39 +// concurrently with the Java application but participates in safepoints to allow
1.40 +// the GC to adjust and unlink oops from the deduplication queue and table.
1.41 +//
1.42 +class G1StringDedupThread: public ConcurrentGCThread {
1.43 +private:
1.44 + static G1StringDedupThread* _thread;
1.45 +
1.46 + G1StringDedupThread();
1.47 + ~G1StringDedupThread();
1.48 +
1.49 + void print(outputStream* st, const G1StringDedupStat& last_stat, const G1StringDedupStat& total_stat);
1.50 +
1.51 +public:
1.52 + static void create();
1.53 + static G1StringDedupThread* thread();
1.54 +
1.55 + virtual void run();
1.56 + virtual void print_on(outputStream* st) const;
1.57 +};
1.58 +
1.59 +#endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1STRINGDEDUPTHREAD_HPP
