| /* |
| * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| #include "precompiled.hpp" |
| #include "gc/shared/collectorPolicy.hpp" |
| #include "runtime/arguments.hpp" |
| #include "runtime/globals_extension.hpp" |
| #include "utilities/align.hpp" |
| #include "utilities/globalDefinitions.hpp" |
| #include "utilities/macros.hpp" |
| #include "unittest.hpp" |
| |
| class TestGenCollectorPolicy { |
| public: |
| |
| class Executor { |
| public: |
| virtual void execute() = 0; |
| }; |
| |
| class UnaryExecutor : public Executor { |
| protected: |
| const size_t param; |
| public: |
| UnaryExecutor(size_t val) : param(val) { } |
| }; |
| |
| class BinaryExecutor : public Executor { |
| protected: |
| const size_t param1; |
| const size_t param2; |
| public: |
| BinaryExecutor(size_t val1, size_t val2) : param1(val1), param2(val2) { } |
| }; |
| |
| class MinHeapSizeGuard { |
| private: |
| const size_t _stored_min_heap_size; |
| public: |
| MinHeapSizeGuard() : _stored_min_heap_size(Arguments::min_heap_size()) { } |
| ~MinHeapSizeGuard() { |
| Arguments::set_min_heap_size(_stored_min_heap_size); |
| } |
| }; |
| |
| class TestWrapper { |
| public: |
| static void test(Executor* setter1, Executor* setter2, Executor* checker) { |
| FLAG_GUARD(InitialHeapSize); |
| FLAG_GUARD(MaxHeapSize); |
| FLAG_GUARD(MaxNewSize); |
| FLAG_GUARD(MinHeapDeltaBytes); |
| FLAG_GUARD(NewSize); |
| FLAG_GUARD(OldSize); |
| MinHeapSizeGuard min_heap_size_guard; |
| |
| FLAG_SET_ERGO(size_t, InitialHeapSize, 100 * M); |
| FLAG_SET_ERGO(size_t, OldSize, 4 * M); |
| FLAG_SET_ERGO(size_t, NewSize, 1 * M); |
| FLAG_SET_ERGO(size_t, MaxNewSize, 80 * M); |
| Arguments::set_min_heap_size(40 * M); |
| |
| ASSERT_NO_FATAL_FAILURE(setter1->execute()); |
| |
| if (setter2 != NULL) { |
| ASSERT_NO_FATAL_FAILURE(setter2->execute()); |
| } |
| |
| ASSERT_NO_FATAL_FAILURE(checker->execute()); |
| } |
| static void test(Executor* setter, Executor* checker) { |
| test(setter, NULL, checker); |
| } |
| }; |
| |
| class SetNewSizeErgo : public UnaryExecutor { |
| public: |
| SetNewSizeErgo(size_t param) : UnaryExecutor(param) { } |
| void execute() { |
| FLAG_SET_ERGO(size_t, NewSize, param); |
| } |
| }; |
| |
| class CheckYoungMin : public UnaryExecutor { |
| public: |
| CheckYoungMin(size_t param) : UnaryExecutor(param) { } |
| void execute() { |
| MarkSweepPolicy msp; |
| msp.initialize_all(); |
| ASSERT_LE(msp.min_young_size(), param); |
| } |
| }; |
| |
| class CheckScaledYoungInitial : public Executor { |
| public: |
| void execute() { |
| size_t initial_heap_size = InitialHeapSize; |
| MarkSweepPolicy msp; |
| msp.initialize_all(); |
| |
| if (InitialHeapSize > initial_heap_size) { |
| // InitialHeapSize was adapted by msp.initialize_all, e.g. due to alignment |
| // caused by 64K page size. |
| initial_heap_size = InitialHeapSize; |
| } |
| |
| size_t expected = msp.scale_by_NewRatio_aligned(initial_heap_size); |
| ASSERT_EQ(expected, msp.initial_young_size()); |
| ASSERT_EQ(expected, NewSize); |
| } |
| }; |
| |
| class SetNewSizeCmd : public UnaryExecutor { |
| public: |
| SetNewSizeCmd(size_t param) : UnaryExecutor(param) { } |
| void execute() { |
| FLAG_SET_CMDLINE(size_t, NewSize, param); |
| } |
| }; |
| |
| class CheckYoungInitial : public UnaryExecutor { |
| public: |
| CheckYoungInitial(size_t param) : UnaryExecutor(param) { } |
| void execute() { |
| MarkSweepPolicy msp; |
| msp.initialize_all(); |
| |
| ASSERT_EQ(param, msp.initial_young_size()); |
| } |
| }; |
| |
| class SetOldSizeCmd : public UnaryExecutor { |
| public: |
| SetOldSizeCmd(size_t param) : UnaryExecutor(param) { } |
| void execute() { |
| FLAG_SET_CMDLINE(size_t, OldSize, param); |
| } |
| }; |
| |
| class SetMaxNewSizeCmd : public BinaryExecutor { |
| public: |
| SetMaxNewSizeCmd(size_t param1, size_t param2) : BinaryExecutor(param1, param2) { } |
| void execute() { |
| size_t heap_alignment = CollectorPolicy::compute_heap_alignment(); |
| size_t new_size_value = align_up(MaxHeapSize, heap_alignment) |
| - param1 + param2; |
| FLAG_SET_CMDLINE(size_t, MaxNewSize, new_size_value); |
| } |
| }; |
| |
| class CheckOldMin : public UnaryExecutor { |
| public: |
| CheckOldMin(size_t param) : UnaryExecutor(param) { } |
| void execute() { |
| MarkSweepPolicy msp; |
| msp.initialize_all(); |
| ASSERT_LE(msp.min_old_size(), param); |
| } |
| }; |
| |
| class CheckOldInitial : public Executor { |
| public: |
| void execute() { |
| size_t heap_alignment = CollectorPolicy::compute_heap_alignment(); |
| |
| MarkSweepPolicy msp; |
| msp.initialize_all(); |
| |
| size_t expected_old_initial = align_up(InitialHeapSize, heap_alignment) |
| - MaxNewSize; |
| |
| ASSERT_EQ(expected_old_initial, msp.initial_old_size()); |
| } |
| }; |
| |
| class CheckOldInitialMaxNewSize : public BinaryExecutor { |
| public: |
| CheckOldInitialMaxNewSize(size_t param1, size_t param2) : BinaryExecutor(param1, param2) { } |
| void execute() { |
| size_t heap_alignment = CollectorPolicy::compute_heap_alignment(); |
| size_t new_size_value = align_up(MaxHeapSize, heap_alignment) |
| - param1 + param2; |
| |
| MarkSweepPolicy msp; |
| msp.initialize_all(); |
| |
| size_t expected_old_initial = align_up(MaxHeapSize, heap_alignment) |
| - new_size_value; |
| |
| ASSERT_EQ(expected_old_initial, msp.initial_old_size()); |
| } |
| }; |
| }; |
| |
| |
| // Testing that the NewSize flag is handled correct is hard because it |
| // depends on so many other configurable variables. These tests only try to |
| // verify that there are some basic rules for NewSize honored by the policies. |
| |
| // If NewSize has been ergonomically set, the collector policy |
| // should use it for min |
| TEST_VM(CollectorPolicy, young_min_ergo) { |
| TestGenCollectorPolicy::SetNewSizeErgo setter(20 * M); |
| TestGenCollectorPolicy::CheckYoungMin checker(20 * M); |
| |
| TestGenCollectorPolicy::TestWrapper::test(&setter, &checker); |
| } |
| |
| // If NewSize has been ergonomically set, the collector policy |
| // should use it for min but calculate the initial young size |
| // using NewRatio. |
| TEST_VM(CollectorPolicy, young_scaled_initial_ergo) { |
| TestGenCollectorPolicy::SetNewSizeErgo setter(20 * M); |
| TestGenCollectorPolicy::CheckScaledYoungInitial checker; |
| |
| TestGenCollectorPolicy::TestWrapper::test(&setter, &checker); |
| } |
| |
| |
| // Since a flag has been set with FLAG_SET_CMDLINE it |
| // will be treated as it have been set on the command line for |
| // the rest of the VM lifetime. This is an irreversible change and |
| // could impact other tests so we use TEST_OTHER_VM |
| TEST_OTHER_VM(CollectorPolicy, young_cmd) { |
| // If NewSize is set on the command line, it should be used |
| // for both min and initial young size if less than min heap. |
| TestGenCollectorPolicy::SetNewSizeCmd setter(20 * M); |
| |
| TestGenCollectorPolicy::CheckYoungMin checker_min(20 * M); |
| TestGenCollectorPolicy::TestWrapper::test(&setter, &checker_min); |
| |
| TestGenCollectorPolicy::CheckYoungInitial checker_initial(20 * M); |
| TestGenCollectorPolicy::TestWrapper::test(&setter, &checker_initial); |
| |
| // If NewSize is set on command line, but is larger than the min |
| // heap size, it should only be used for initial young size. |
| TestGenCollectorPolicy::SetNewSizeCmd setter_large(80 * M); |
| TestGenCollectorPolicy::CheckYoungInitial checker_large(80 * M); |
| TestGenCollectorPolicy::TestWrapper::test(&setter_large, &checker_large); |
| } |
| |
| // Since a flag has been set with FLAG_SET_CMDLINE it |
| // will be treated as it have been set on the command line for |
| // the rest of the VM lifetime. This is an irreversible change and |
| // could impact other tests so we use TEST_OTHER_VM |
| TEST_OTHER_VM(CollectorPolicy, old_cmd) { |
| // If OldSize is set on the command line, it should be used |
| // for both min and initial old size if less than min heap. |
| TestGenCollectorPolicy::SetOldSizeCmd setter(20 * M); |
| |
| TestGenCollectorPolicy::CheckOldMin checker_min(20 * M); |
| TestGenCollectorPolicy::TestWrapper::test(&setter, &checker_min); |
| |
| TestGenCollectorPolicy::CheckOldInitial checker_initial; |
| TestGenCollectorPolicy::TestWrapper::test(&setter, &checker_initial); |
| |
| // If MaxNewSize is large, the maximum OldSize will be less than |
| // what's requested on the command line and it should be reset |
| // ergonomically. |
| // We intentionally set MaxNewSize + OldSize > MaxHeapSize |
| TestGenCollectorPolicy::SetOldSizeCmd setter_old_size(30 * M); |
| TestGenCollectorPolicy::SetMaxNewSizeCmd setter_max_new_size(30 * M, 20 * M); |
| TestGenCollectorPolicy::CheckOldInitialMaxNewSize checker_large(30 * M, 20 * M); |
| |
| TestGenCollectorPolicy::TestWrapper::test(&setter_old_size, &setter_max_new_size, &checker_large); |
| } |