1 /* 2 * Copyright (c) 2001, 2015, 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 #include "precompiled.hpp" 26 #include "gc/g1/concurrentG1Refine.hpp" 27 #include "gc/g1/concurrentG1RefineThread.hpp" 28 #include "gc/g1/g1CollectedHeap.inline.hpp" 29 #include "gc/g1/g1HotCardCache.hpp" 30 #include "runtime/java.hpp" 31 32 ConcurrentG1Refine::ConcurrentG1Refine(G1CollectedHeap* g1h) : 33 _threads(NULL), 34 _sample_thread(NULL), 35 _hot_card_cache(g1h) 36 { 37 // Ergonomically select initial concurrent refinement parameters 38 if (FLAG_IS_DEFAULT(G1ConcRefinementGreenZone)) { 39 FLAG_SET_DEFAULT(G1ConcRefinementGreenZone, (intx)ParallelGCThreads); 40 } 41 set_green_zone(G1ConcRefinementGreenZone); 42 43 if (FLAG_IS_DEFAULT(G1ConcRefinementYellowZone)) { 44 FLAG_SET_DEFAULT(G1ConcRefinementYellowZone, green_zone() * 3); 45 } 46 set_yellow_zone(MAX2<int>(G1ConcRefinementYellowZone, green_zone())); 47 48 if (FLAG_IS_DEFAULT(G1ConcRefinementRedZone)) { 49 FLAG_SET_DEFAULT(G1ConcRefinementRedZone, yellow_zone() * 2); 50 } 51 set_red_zone(MAX2<int>(G1ConcRefinementRedZone, yellow_zone())); 52 } 53 54 ConcurrentG1Refine* ConcurrentG1Refine::create(G1CollectedHeap* g1h, CardTableEntryClosure* refine_closure, jint* ecode) { 55 ConcurrentG1Refine* cg1r = new ConcurrentG1Refine(g1h); 56 if (cg1r == NULL) { 57 *ecode = JNI_ENOMEM; 58 vm_shutdown_during_initialization("Could not create ConcurrentG1Refine"); 59 return NULL; 60 } 61 cg1r->_n_worker_threads = thread_num(); 62 63 cg1r->reset_threshold_step(); 64 65 cg1r->_threads = NEW_C_HEAP_ARRAY_RETURN_NULL(ConcurrentG1RefineThread*, cg1r->_n_worker_threads, mtGC); 66 if (cg1r->_threads == NULL) { 67 *ecode = JNI_ENOMEM; 68 vm_shutdown_during_initialization("Could not allocate an array for ConcurrentG1RefineThread"); 69 return NULL; 70 } 71 | 1 /* 2 * Copyright (c) 2001, 2016, 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 #include "precompiled.hpp" 26 #include "gc/g1/concurrentG1Refine.hpp" 27 #include "gc/g1/concurrentG1RefineThread.hpp" 28 #include "gc/g1/g1CollectedHeap.inline.hpp" 29 #include "gc/g1/g1HotCardCache.hpp" 30 #include "runtime/java.hpp" 31 32 ConcurrentG1Refine::ConcurrentG1Refine(G1CollectedHeap* g1h) : 33 _threads(NULL), 34 _sample_thread(NULL), 35 _hot_card_cache(g1h) 36 { 37 // Ergonomically select initial concurrent refinement parameters 38 if (FLAG_IS_DEFAULT(G1ConcRefinementGreenZone)) { 39 FLAG_SET_DEFAULT(G1ConcRefinementGreenZone, ParallelGCThreads); 40 } 41 set_green_zone(G1ConcRefinementGreenZone); 42 43 if (FLAG_IS_DEFAULT(G1ConcRefinementYellowZone)) { 44 FLAG_SET_DEFAULT(G1ConcRefinementYellowZone, green_zone() * 3); 45 } 46 set_yellow_zone(MAX2(G1ConcRefinementYellowZone, green_zone())); 47 48 if (FLAG_IS_DEFAULT(G1ConcRefinementRedZone)) { 49 FLAG_SET_DEFAULT(G1ConcRefinementRedZone, yellow_zone() * 2); 50 } 51 set_red_zone(MAX2(G1ConcRefinementRedZone, yellow_zone())); 52 } 53 54 ConcurrentG1Refine* ConcurrentG1Refine::create(G1CollectedHeap* g1h, CardTableEntryClosure* refine_closure, jint* ecode) { 55 ConcurrentG1Refine* cg1r = new ConcurrentG1Refine(g1h); 56 if (cg1r == NULL) { 57 *ecode = JNI_ENOMEM; 58 vm_shutdown_during_initialization("Could not create ConcurrentG1Refine"); 59 return NULL; 60 } 61 cg1r->_n_worker_threads = thread_num(); 62 63 cg1r->reset_threshold_step(); 64 65 cg1r->_threads = NEW_C_HEAP_ARRAY_RETURN_NULL(ConcurrentG1RefineThread*, cg1r->_n_worker_threads, mtGC); 66 if (cg1r->_threads == NULL) { 67 *ecode = JNI_ENOMEM; 68 vm_shutdown_during_initialization("Could not allocate an array for ConcurrentG1RefineThread"); 69 return NULL; 70 } 71 |