/* * Copyright (C) 2012, 2016 higherfrequencytrading.com * Copyright (C) 2016 Roman Leventov * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation, either version 3 of the License. * * This program 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 Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package net.openhft.chronicle.map.impl.stage.data.bytes; import net.openhft.chronicle.bytes.BytesStore; import net.openhft.chronicle.bytes.RandomDataInput; import net.openhft.chronicle.bytes.VanillaBytes; import net.openhft.chronicle.hash.AbstractData; import net.openhft.chronicle.hash.impl.stage.hash.CheckOnEachPublicOperation; import net.openhft.chronicle.map.impl.stage.map.ValueBytesInterop; import net.openhft.sg.Stage; import net.openhft.sg.StageRef; import net.openhft.sg.Staged; import static net.openhft.chronicle.bytes.NoBytesStore.NO_BYTES_STORE; @Staged public class WrappedValueBytesData<V> extends AbstractData<V> { @StageRef ValueBytesInterop<V> vi; @StageRef CheckOnEachPublicOperation checkOnEachPublicOperation; private WrappedValueBytesData<V> next; boolean nextInit() { return true; } void closeNext() { // do nothing } @Stage("Next") public WrappedValueBytesData<V> getUnusedWrappedValueBytesData() { if (!wrappedValueBytesStoreInit()) return this; if (next == null) next = new WrappedValueBytesData<>(); return next.getUnusedWrappedValueBytesData(); } @Stage("WrappedValueBytesStore") private BytesStore wrappedValueBytesStore; @Stage("WrappedValueBytesStore") private long wrappedValueBytesOffset; @Stage("WrappedValueBytesStore") private long wrappedValueBytesSize; boolean wrappedValueBytesStoreInit() { return wrappedValueBytesStore != null; } public void initWrappedValueBytesStore(BytesStore bytesStore, long offset, long size) { wrappedValueBytesStore = bytesStore; wrappedValueBytesOffset = offset; wrappedValueBytesSize = size; } void closeWrappedValueBytesStore() { wrappedValueBytesStore = null; if (next != null) next.closeWrappedValueBytesStore(); } @Stage("WrappedValueBytes") private final VanillaBytes wrappedValueBytes = new VanillaBytes(NO_BYTES_STORE); @Stage("WrappedValueBytes") private boolean wrappedValueBytesUsed = false; boolean wrappedValueBytesInit() { return wrappedValueBytesUsed; } void initWrappedValueBytes() { wrappedValueBytes.bytesStore( wrappedValueBytesStore, wrappedValueBytesOffset, wrappedValueBytesSize); wrappedValueBytesUsed = true; } void closeWrappedValueBytes() { wrappedValueBytes.bytesStore(NO_BYTES_STORE, 0, 0); wrappedValueBytesUsed = false; } @Stage("CachedWrappedValue") private V cachedWrappedValue; @Stage("CachedWrappedValue") private boolean cachedWrappedValueRead = false; private void initCachedWrappedValue() { cachedWrappedValue = innerGetUsing(cachedWrappedValue); cachedWrappedValueRead = true; } @Override public RandomDataInput bytes() { checkOnEachPublicOperation.checkOnEachPublicOperation(); return wrappedValueBytes.bytesStore(); } @Override public long offset() { checkOnEachPublicOperation.checkOnEachPublicOperation(); return wrappedValueBytesOffset; } @Override public long size() { checkOnEachPublicOperation.checkOnEachPublicOperation(); return wrappedValueBytesSize; } @Override public V get() { checkOnEachPublicOperation.checkOnEachPublicOperation(); return cachedWrappedValue; } @Override public V getUsing(V using) { checkOnEachPublicOperation.checkOnEachPublicOperation(); return innerGetUsing(using); } private V innerGetUsing(V usingValue) { wrappedValueBytes.readPosition(wrappedValueBytesOffset); return vi.valueReader.read(wrappedValueBytes, wrappedValueBytesSize, usingValue); } }