1 /* 2 * Copyright (c) 2024, 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 "cds/methodProfiler.hpp" 27 #include "code/nmethod.hpp" 28 #include "oops/recompilationSchedule.hpp" 29 #include "oops/trainingData.hpp" 30 31 Array<MethodTrainingData*>* RecompilationSchedule::_schedule = nullptr; 32 Array<MethodTrainingData*>* RecompilationSchedule::_schedule_for_dumping = nullptr; 33 volatile bool* RecompilationSchedule::_status = nullptr; 34 35 void RecompilationSchedule::initialize() { 36 if (TrainingData::have_data()) { 37 if (_schedule != nullptr && _schedule->length() > 0) { 38 const int size = _schedule->length(); 39 _status = NEW_C_HEAP_ARRAY(bool, size, mtCompiler); 40 for (int i = 0; i < size; i++) { 41 _status[i] = false; 42 } 43 } 44 } 45 } 46 47 void RecompilationSchedule::prepare(TRAPS) { 48 if (!TrainingData::need_data()) { 49 return; 50 } 51 #if INCLUDE_CDS 52 auto nmethods = MethodProfiler::sampled_nmethods(); 53 GrowableArray<MethodTrainingData*> dyn_schedule; 54 for (auto it = nmethods->begin(); it != nmethods->end(); ++it) { 55 nmethod* nm = *it; 56 if (RecordOnlyTopCompilations && nm->method_profiling_count() == 0) { 57 break; 58 } 59 if (nm->method() != nullptr) { 60 MethodTrainingData* mtd = nm->method()->training_data_or_null(); 61 if (mtd != nullptr) { 62 dyn_schedule.append(mtd); 63 } 64 } 65 } 66 delete nmethods; 67 ClassLoaderData* loader_data = ClassLoaderData::the_null_class_loader_data(); 68 _schedule_for_dumping = MetadataFactory::new_array<MethodTrainingData*>(loader_data, dyn_schedule.length(), CHECK); 69 int i = 0; 70 for (auto it = dyn_schedule.begin(); it != dyn_schedule.end(); ++it) { 71 _schedule_for_dumping->at_put(i++, *it); 72 } 73 #endif 74 } 75 76 #if INCLUDE_CDS 77 void RecompilationSchedule::iterate_roots(MetaspaceClosure* it) { 78 if (!TrainingData::need_data()) { 79 return; 80 } 81 it->push(&_schedule_for_dumping); 82 } 83 84 void RecompilationSchedule::cleanup() { 85 _status = nullptr; 86 } 87 88 void RecompilationSchedule::serialize_training_data(SerializeClosure* soc) { 89 if (soc->writing()) { 90 soc->do_ptr(&_schedule_for_dumping); 91 } else { 92 soc->do_ptr(&_schedule); 93 } 94 } 95 96 97 void RecompilationSchedule::print_archived_training_data_on(outputStream* st) { 98 if (_schedule != nullptr && _schedule->length() > 0) { 99 st->print_cr("Archived TrainingData Recompilation Schedule"); 100 for (int i = 0; i < _schedule->length(); i++) { 101 st->print("%4d: ", i); 102 MethodTrainingData* mtd = _schedule->at(i); 103 if (mtd != nullptr) { 104 mtd->print_on(st); 105 } else { 106 st->print("nullptr"); 107 } 108 st->cr(); 109 } 110 } 111 } 112 #endif //INCLUDE_CDS