1 /* 2 * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #ifndef SHARE_VM_GC_SHARED_STRINGDEDUP_STRINGDEDUPTHREAD_INLINE_HPP 26 #define SHARE_VM_GC_SHARED_STRINGDEDUP_STRINGDEDUPTHREAD_INLINE_HPP 27 28 #include "gc/shared/suspendibleThreadSet.hpp" 29 #include "gc/shared/stringdedup/stringDedupQueue.inline.hpp" 30 #include "gc/shared/stringdedup/stringDedupThread.hpp" 31 32 template <typename STAT> 33 void StringDedupThreadImpl<STAT>::do_deduplication() { 34 STAT total_stat; 35 36 deduplicate_shared_strings(&total_stat); 37 38 // Main loop 39 for (;;) { 40 STAT stat; 41 42 stat.mark_idle(); 43 44 // Wait for the queue to become non-empty 45 StringDedupQueue::wait(); 46 if (this->should_terminate()) { 47 break; 48 } 49 50 { 51 // Include thread in safepoints 52 SuspendibleThreadSetJoiner sts_join; 53 54 stat.mark_exec(); 55 StringDedupStat::print_start(&stat); 56 57 // Process the queue 58 for (;;) { 59 oop java_string = StringDedupQueue::pop(); 60 if (java_string == NULL) { 61 break; 62 } 63 64 StringDedupTable::deduplicate(java_string, &stat); 65 66 // Safepoint this thread if needed 67 if (sts_join.should_yield()) { 68 stat.mark_block(); 69 sts_join.yield(); 70 stat.mark_unblock(); 71 } 72 } 73 74 stat.mark_done(); 75 76 total_stat.add(&stat); 77 print_end(&stat, &total_stat); 78 stat.reset(); 79 } 80 81 StringDedupTable::clean_entry_cache(); 82 } 83 } 84 85 template <typename STAT> 86 void StringDedupThreadImpl<STAT>::create() { 87 assert(_thread == NULL, "One string deduplication thread allowed"); 88 _thread = new StringDedupThreadImpl<STAT>(); 89 } 90 91 #endif // SHARE_VM_GC_SHARED_STRINGDEDUP_STRINGDEDUPTHREAD_INLINE_HPP