1 /*
2 * Copyright (c) 2017, 2018, Red Hat, Inc. All rights reserved.
3 *
4 * This code is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License version 2 only, as
6 * published by the Free Software Foundation.
7 *
8 * This code is distributed in the hope that it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
11 * version 2 for more details (a copy is included in the LICENSE file that
12 * accompanied this code).
13 *
14 * You should have received a copy of the GNU General Public License version
15 * 2 along with this work; if not, write to the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
17 *
18 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
19 * or visit www.oracle.com if you need additional information or have any
20 * questions.
21 *
22 */
23
24 #ifndef SHARE_GC_SHENANDOAH_SHENANDOAHSTRINGDEDUP_HPP
25 #define SHARE_GC_SHENANDOAH_SHENANDOAHSTRINGDEDUP_HPP
26
27 #include "classfile/javaClasses.inline.hpp"
28 #include "gc/shared/stringdedup/stringDedup.hpp"
29 #include "memory/iterator.hpp"
30
31 class ShenandoahStringDedup : public StringDedup {
32 public:
33 // Initialize string deduplication.
34 static void initialize();
35
36 // Enqueue a string to worker's local string dedup queue
37 static void enqueue_candidate(oop java_string);
38
39 // Deduplicate a string, the call is lock-free
40 static void deduplicate(oop java_string);
41
42 static void parallel_oops_do(OopClosure* cl, uint worker_id);
43 static void oops_do_slow(OopClosure* cl);
44
45 static inline bool is_candidate(oop obj) {
46 return java_lang_String::is_instance_inlined(obj) &&
47 java_lang_String::value(obj) != NULL;
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1 /*
2 * Copyright (c) 2017, 2019, Red Hat, Inc. All rights reserved.
3 *
4 * This code is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License version 2 only, as
6 * published by the Free Software Foundation.
7 *
8 * This code is distributed in the hope that it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
11 * version 2 for more details (a copy is included in the LICENSE file that
12 * accompanied this code).
13 *
14 * You should have received a copy of the GNU General Public License version
15 * 2 along with this work; if not, write to the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
17 *
18 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
19 * or visit www.oracle.com if you need additional information or have any
20 * questions.
21 *
22 */
23
24 #ifndef SHARE_GC_SHENANDOAH_SHENANDOAHSTRINGDEDUP_HPP
25 #define SHARE_GC_SHENANDOAH_SHENANDOAHSTRINGDEDUP_HPP
26
27 #include "classfile/javaClasses.hpp"
28 #include "gc/shared/stringdedup/stringDedup.hpp"
29 #include "memory/iterator.hpp"
30
31 class ShenandoahStringDedup : public StringDedup {
32 public:
33 // Initialize string deduplication.
34 static void initialize();
35
36 // Enqueue a string to worker's local string dedup queue
37 static void enqueue_candidate(oop java_string);
38
39 // Deduplicate a string, the call is lock-free
40 static void deduplicate(oop java_string);
41
42 static void parallel_oops_do(OopClosure* cl, uint worker_id);
43 static void oops_do_slow(OopClosure* cl);
44
45 static inline bool is_candidate(oop obj) {
46 return java_lang_String::is_instance_inlined(obj) &&
47 java_lang_String::value(obj) != NULL;
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