author | stefank |
Tue, 26 Nov 2019 10:47:46 +0100 | |
changeset 59290 | 97d13893ec3c |
parent 54615 | 9afd2868c18b |
permissions | -rw-r--r-- |
50574 | 1 |
/* |
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* Copyright (c) 2014, 2018, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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#include "precompiled.hpp" |
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#include "classfile/stringTable.hpp" |
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#include "gc/shared/stringdedup/stringDedup.hpp" |
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#include "gc/shared/stringdedup/stringDedupQueue.hpp" |
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#include "gc/shared/stringdedup/stringDedupQueue.inline.hpp" |
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#include "gc/shared/stringdedup/stringDedupTable.hpp" |
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#include "gc/shared/stringdedup/stringDedupThread.hpp" |
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#include "gc/shared/suspendibleThreadSet.hpp" |
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#include "logging/log.hpp" |
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#include "oops/access.inline.hpp" |
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#include "oops/oop.inline.hpp" |
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StringDedupThread* StringDedupThread::_thread = NULL; |
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StringDedupThread::StringDedupThread() : |
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ConcurrentGCThread() { |
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set_name("StrDedup"); |
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create_and_start(); |
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} |
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StringDedupThread::~StringDedupThread() { |
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ShouldNotReachHere(); |
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} |
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StringDedupThread* StringDedupThread::thread() { |
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assert(_thread != NULL, "String deduplication thread not created"); |
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return _thread; |
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} |
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class StringDedupSharedClosure: public OopClosure { |
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private: |
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StringDedupStat* _stat; |
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public: |
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StringDedupSharedClosure(StringDedupStat* stat) : _stat(stat) {} |
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51491
187c84a5efe1
8208658: Make CDS archived heap regions usable even if compressed oop encoding has changed
iklam
parents:
50574
diff
changeset
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virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
187c84a5efe1
8208658: Make CDS archived heap regions usable even if compressed oop encoding has changed
iklam
parents:
50574
diff
changeset
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virtual void do_oop(oop* p) { |
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oop java_string = RawAccess<>::oop_load(p); |
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StringDedupTable::deduplicate(java_string, _stat); |
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} |
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}; |
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54615
9afd2868c18b
8222664: runtime/appcds/sharedStrings/SharedStringsStress.java assert GC active during NoGCVerifier
pliden
parents:
51491
diff
changeset
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// The CDS archive does not include the string deduplication table. Only the string |
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// table is saved in the archive. The shared strings from CDS archive need to be |
54615
9afd2868c18b
8222664: runtime/appcds/sharedStrings/SharedStringsStress.java assert GC active during NoGCVerifier
pliden
parents:
51491
diff
changeset
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// added to the string deduplication table before deduplication occurs. That is |
9afd2868c18b
8222664: runtime/appcds/sharedStrings/SharedStringsStress.java assert GC active during NoGCVerifier
pliden
parents:
51491
diff
changeset
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// done in the beginning of the StringDedupThread (see StringDedupThread::do_deduplication()). |
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void StringDedupThread::deduplicate_shared_strings(StringDedupStat* stat) { |
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StringDedupSharedClosure sharedStringDedup(stat); |
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StringTable::shared_oops_do(&sharedStringDedup); |
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} |
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void StringDedupThread::stop_service() { |
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StringDedupQueue::cancel_wait(); |
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} |
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void StringDedupThread::print_start(const StringDedupStat* last_stat) { |
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StringDedupStat::print_start(last_stat); |
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} |
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void StringDedupThread::print_end(const StringDedupStat* last_stat, const StringDedupStat* total_stat) { |
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StringDedupStat::print_end(last_stat, total_stat); |
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if (log_is_enabled(Debug, gc, stringdedup)) { |
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last_stat->print_statistics(false); |
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total_stat->print_statistics(true); |
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StringDedupTable::print_statistics(); |
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StringDedupQueue::print_statistics(); |
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} |
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} |