/*

 * Copyright (c) 2011, 2018, 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.

 */

package org.graalvm.compiler.hotspot;

import jdk.vm.ci.hotspot.HotSpotVMConfigAccess;

import jdk.vm.ci.hotspot.HotSpotVMConfigStore;

/**

 * This is a source with different versions for various JDKs. When modifying/adding a field in this

 * class accessed from outside this class, be sure to update the field appropriately in all source

 * files named {@code GraalHotSpotVMConfigVersioned.java}.

 *

 * Fields are grouped according to the most recent JBS issue showing why they are versioned.

 *

 * JDK Version: 11+

 */

final class GraalHotSpotVMConfigVersioned extends HotSpotVMConfigAccess {

    GraalHotSpotVMConfigVersioned(HotSpotVMConfigStore store) {

        super(store);

    }

    private boolean initInlineNotify() {

        String syncKnobs = getFlag("SyncKnobs", String.class, "");

        return syncKnobs == null || !syncKnobs.contains("InlineNotify=0");

    }

    // JSK-8132287

    final boolean inlineNotify = initInlineNotify();

    // JDK-8073583

    final boolean useCRC32CIntrinsics = getFlag("UseCRC32CIntrinsics", Boolean.class);

    // JDK-8046936

    final int javaThreadReservedStackActivationOffset = getFieldOffset("JavaThread::_reserved_stack_activation", Integer.class, "address");

    final int methodFlagsOffset = getFieldOffset("Method::_flags", Integer.class, "u2");

    final long throwDelayedStackOverflowErrorEntry = getFieldValue("StubRoutines::_throw_delayed_StackOverflowError_entry", Long.class, "address");

    final long enableStackReservedZoneAddress = getAddress("SharedRuntime::enable_stack_reserved_zone");

    // JDK-8135085

    final int methodIntrinsicIdOffset = getFieldOffset("Method::_intrinsic_id", Integer.class, "u2");

    // JDK-8151956

    final int methodCodeOffset = getFieldOffset("Method::_code", Integer.class, "CompiledMethod*");

    // JDK-8059606

    final int invocationCounterIncrement = getConstant("InvocationCounter::count_increment", Integer.class);

    final int invocationCounterShift = getConstant("InvocationCounter::count_shift", Integer.class);

    // JDK-8195142

    final byte dirtyCardValue = getConstant("CardTable::dirty_card", Byte.class);

    final byte g1YoungCardValue = getConstant("G1CardTable::g1_young_gen", Byte.class);

    // JDK-8201318

    final int g1SATBQueueMarkingOffset = getConstant("G1ThreadLocalData::satb_mark_queue_active_offset", Integer.class);

    final int g1SATBQueueIndexOffset = getConstant("G1ThreadLocalData::satb_mark_queue_index_offset", Integer.class);

    final int g1SATBQueueBufferOffset = getConstant("G1ThreadLocalData::satb_mark_queue_buffer_offset", Integer.class);

    final int g1CardQueueIndexOffset = getConstant("G1ThreadLocalData::dirty_card_queue_index_offset", Integer.class);

    final int g1CardQueueBufferOffset = getConstant("G1ThreadLocalData::dirty_card_queue_buffer_offset", Integer.class);

    // JDK-8033552

    final long heapTopAddress = getFieldValue("CompilerToVM::Data::_heap_top_addr", Long.class, "HeapWord* volatile*");

    // JDK-8015774

    final long codeCacheLowBound = getFieldValue("CodeCache::_low_bound", Long.class, "address");

    final long codeCacheHighBound = getFieldValue("CodeCache::_high_bound", Long.class, "address");

}