parent
f67441354a
commit
671f9d48d4
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@ -16,12 +16,13 @@
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package io.netty.handler.codec.http.multipart;
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import io.netty.handler.codec.http.HttpRequest;
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import io.netty.util.internal.PlatformDependent;
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import java.io.IOException;
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import java.nio.charset.Charset;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.concurrent.ConcurrentHashMap;
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import java.util.concurrent.ConcurrentMap;
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/**
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* Default factory giving Attribute and FileUpload according to constructor
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@ -46,8 +47,9 @@ public class DefaultHttpDataFactory implements HttpDataFactory {
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/**
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* Keep all HttpDatas until cleanAllHttpDatas() is called.
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*/
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private final ConcurrentHashMap<HttpRequest, List<HttpData>> requestFileDeleteMap =
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new ConcurrentHashMap<HttpRequest, List<HttpData>>();
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private final ConcurrentMap<HttpRequest, List<HttpData>> requestFileDeleteMap =
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PlatformDependent.newConcurrentHashMap();
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/**
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* HttpData will be in memory if less than default size (16KB).
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* The type will be Mixed.
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@ -15,19 +15,19 @@
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*/
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package io.netty.handler.codec.spdy;
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import io.netty.util.internal.PlatformDependent;
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import java.util.Comparator;
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import java.util.Map;
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import java.util.Queue;
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import java.util.Set;
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import java.util.TreeSet;
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import java.util.concurrent.ConcurrentHashMap;
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import java.util.concurrent.ConcurrentLinkedQueue;
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import java.util.concurrent.atomic.AtomicInteger;
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final class SpdySession {
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private final Map<Integer, StreamState> activeStreams =
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new ConcurrentHashMap<Integer, StreamState>();
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private final Map<Integer, StreamState> activeStreams = PlatformDependent.newConcurrentHashMap();
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int numActiveStreams() {
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return activeStreams.size();
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@ -15,9 +15,10 @@
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*/
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package io.netty.handler.codec.serialization;
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import io.netty.util.internal.PlatformDependent;
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import java.lang.ref.Reference;
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import java.util.HashMap;
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import java.util.concurrent.ConcurrentHashMap;
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public final class ClassResolvers {
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@ -66,7 +67,8 @@ public final class ClassResolvers {
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public static ClassResolver weakCachingConcurrentResolver(ClassLoader classLoader) {
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return new CachingClassResolver(
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new ClassLoaderClassResolver(defaultClassLoader(classLoader)),
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new WeakReferenceMap<String, Class<?>>(new ConcurrentHashMap<String, Reference<Class<?>>>()));
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new WeakReferenceMap<String, Class<?>>(
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PlatformDependent.<String, Reference<Class<?>>>newConcurrentHashMap()));
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}
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/**
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@ -79,7 +81,8 @@ public final class ClassResolvers {
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public static ClassResolver softCachingConcurrentResolver(ClassLoader classLoader) {
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return new CachingClassResolver(
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new ClassLoaderClassResolver(defaultClassLoader(classLoader)),
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new SoftReferenceMap<String, Class<?>>(new ConcurrentHashMap<String, Reference<Class<?>>>()));
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new SoftReferenceMap<String, Class<?>>(
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PlatformDependent.<String, Reference<Class<?>>>newConcurrentHashMap()));
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}
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static ClassLoader defaultClassLoader(ClassLoader classLoader) {
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@ -15,7 +15,8 @@
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*/
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package io.netty.util;
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import java.util.concurrent.ConcurrentHashMap;
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import io.netty.util.internal.PlatformDependent;
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import java.util.concurrent.ConcurrentMap;
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/**
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@ -25,9 +26,10 @@ import java.util.concurrent.ConcurrentMap;
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*
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* @param <T> the type of the {@link Attribute} which can be accessed via this {@link AttributeKey}.
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*/
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@SuppressWarnings("UnusedDeclaration") // 'T' is used only at compile time
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public final class AttributeKey<T> extends UniqueName {
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private static final ConcurrentMap<String, Boolean> names = new ConcurrentHashMap<String, Boolean>();
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private static final ConcurrentMap<String, Boolean> names = PlatformDependent.newConcurrentHashMap();
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/**
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* Create a new instance
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@ -25,7 +25,6 @@ import java.util.HashSet;
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import java.util.Iterator;
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import java.util.List;
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import java.util.Set;
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import java.util.concurrent.ConcurrentHashMap;
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import java.util.concurrent.Executors;
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import java.util.concurrent.ThreadFactory;
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import java.util.concurrent.TimeUnit;
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@ -222,7 +221,7 @@ public class HashedWheelTimer implements Timer {
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Set<HashedWheelTimeout>[] wheel = new Set[ticksPerWheel];
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for (int i = 0; i < wheel.length; i ++) {
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wheel[i] = Collections.newSetFromMap(
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new ConcurrentHashMap<HashedWheelTimeout, Boolean>(16, 0.95f, 4));
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PlatformDependent.<HashedWheelTimeout, Boolean>newConcurrentHashMap());
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}
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return wheel;
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}
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@ -16,13 +16,13 @@
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package io.netty.util;
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import io.netty.util.internal.PlatformDependent;
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import io.netty.util.internal.SystemPropertyUtil;
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import io.netty.util.internal.logging.InternalLogger;
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import io.netty.util.internal.logging.InternalLoggerFactory;
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import java.lang.ref.PhantomReference;
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import java.lang.ref.ReferenceQueue;
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import java.util.concurrent.ConcurrentHashMap;
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import java.util.concurrent.ConcurrentMap;
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import java.util.concurrent.atomic.AtomicBoolean;
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@ -51,7 +51,7 @@ public final class ResourceLeakDetector<T> {
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private final DefaultResourceLeak tail = new DefaultResourceLeak(null);
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private final ReferenceQueue<Object> refQueue = new ReferenceQueue<Object>();
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private final ConcurrentMap<Exception, Boolean> reportedLeaks = new ConcurrentHashMap<Exception, Boolean>();
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private final ConcurrentMap<Exception, Boolean> reportedLeaks = PlatformDependent.newConcurrentHashMap();
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private final String resourceType;
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private final int samplingInterval;
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@ -16,7 +16,8 @@
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package io.netty.util;
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import java.util.concurrent.ConcurrentHashMap;
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import io.netty.util.internal.PlatformDependent;
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import java.util.concurrent.ConcurrentMap;
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/**
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@ -27,8 +28,7 @@ public final class Signal extends Error {
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private static final long serialVersionUID = -221145131122459977L;
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private static final ConcurrentMap<String, Boolean> map =
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new ConcurrentHashMap<String, Boolean>();
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private static final ConcurrentMap<String, Boolean> map = PlatformDependent.newConcurrentHashMap();
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private final UniqueName uname;
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@ -15,12 +15,17 @@
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*/
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package io.netty.util.internal;
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import io.netty.util.internal.chmv8.ConcurrentHashMapV8;
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import java.lang.reflect.Field;
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import java.net.InetSocketAddress;
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import java.net.ServerSocket;
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import java.nio.ByteBuffer;
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import java.util.Locale;
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import java.util.Map;
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import java.util.concurrent.BlockingQueue;
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import java.util.concurrent.ConcurrentHashMap;
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import java.util.concurrent.ConcurrentMap;
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import java.util.regex.Pattern;
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@ -45,6 +50,7 @@ public final class PlatformDependent {
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private static final boolean CAN_ENABLE_TCP_NODELAY_BY_DEFAULT = !isAndroid();
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private static final boolean HAS_UNSAFE = hasUnsafe0();
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private static final boolean CAN_USE_CHM_V8 = HAS_UNSAFE && JAVA_VERSION < 8;
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private static final boolean CAN_FREE_DIRECT_BUFFER = canFreeDirectBuffer0();
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private static final boolean UNSAFE_HASE_COPY_METHODS = unsafeHasCopyMethods0();
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private static final boolean IS_UNALIGNED = isUnaligned0();
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return HAS_JAVASSIST;
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}
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/**
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* Creates a new fastest {@link ConcurrentMap} implementaion for the current platform.
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*/
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public static <K, V> ConcurrentMap<K, V> newConcurrentHashMap() {
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if (CAN_USE_CHM_V8) {
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return new ConcurrentHashMapV8<K, V>();
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} else {
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return new ConcurrentHashMap<K, V>();
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}
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}
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/**
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* Creates a new fastest {@link ConcurrentMap} implementaion for the current platform.
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*/
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public static <K, V> ConcurrentMap<K, V> newConcurrentHashMap(int initialCapacity) {
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if (CAN_USE_CHM_V8) {
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return new ConcurrentHashMapV8<K, V>(initialCapacity);
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} else {
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return new ConcurrentHashMap<K, V>(initialCapacity);
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}
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}
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/**
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* Creates a new fastest {@link ConcurrentMap} implementaion for the current platform.
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*/
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public static <K, V> ConcurrentMap<K, V> newConcurrentHashMap(int initialCapacity, float loadFactor) {
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if (CAN_USE_CHM_V8) {
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return new ConcurrentHashMapV8<K, V>(initialCapacity, loadFactor);
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} else {
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return new ConcurrentHashMap<K, V>(initialCapacity, loadFactor);
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}
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}
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/**
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* Creates a new fastest {@link ConcurrentMap} implementaion for the current platform.
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*/
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public static <K, V> ConcurrentMap<K, V> newConcurrentHashMap(
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int initialCapacity, float loadFactor, int concurrencyLevel) {
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if (CAN_USE_CHM_V8) {
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return new ConcurrentHashMapV8<K, V>(initialCapacity, loadFactor, concurrencyLevel);
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} else {
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return new ConcurrentHashMap<K, V>(initialCapacity, loadFactor, concurrencyLevel);
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}
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}
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/**
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* Creates a new fastest {@link ConcurrentMap} implementaion for the current platform.
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*/
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public static <K, V> ConcurrentMap<K, V> newConcurrentHashMap(Map<? extends K, ? extends V> map) {
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if (CAN_USE_CHM_V8) {
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return new ConcurrentHashMapV8<K, V>(map);
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} else {
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return new ConcurrentHashMap<K, V>(map);
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}
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}
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public static long directBufferAddress(ByteBuffer buffer) {
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return PlatformDependent0.directBufferAddress(buffer);
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}
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}
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try {
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Class.forName(
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"java.util.concurrent.LinkedTransferQueue", false,
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BlockingQueue.class.getClassLoader());
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Class.forName("java.time.Clock", false, Object.class.getClassLoader());
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return 8;
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} catch (Exception e) {
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// Ignore
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}
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try {
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Class.forName("java.util.concurrent.LinkedTransferQueue", false, BlockingQueue.class.getClassLoader());
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return 7;
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} catch (Exception e) {
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// Ignore
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File diff suppressed because it is too large
Load Diff
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@ -0,0 +1,761 @@
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/*
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* Copyright 2013 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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/*
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* Written by Doug Lea with assistance from members of JCP JSR-166
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* Expert Group and released to the public domain, as explained at
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* http://creativecommons.org/publicdomain/zero/1.0/
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*/
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package io.netty.util.internal.chmv8;
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/**
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* A {@link ForkJoinTask} with a completion action performed when
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* triggered and there are no remaining pending
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* actions. CountedCompleters are in general more robust in the
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* presence of subtask stalls and blockage than are other forms of
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* ForkJoinTasks, but are less intuitive to program. Uses of
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* CountedCompleter are similar to those of other completion based
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* components (such as {@link java.nio.channels.CompletionHandler})
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* except that multiple <em>pending</em> completions may be necessary
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* to trigger the {@link #onCompletion} action, not just one. Unless
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* initialized otherwise, the {@link #getPendingCount pending count}
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* starts at zero, but may be (atomically) changed using methods
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* {@link #setPendingCount}, {@link #addToPendingCount}, and {@link
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* #compareAndSetPendingCount}. Upon invocation of {@link
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* #tryComplete}, if the pending action count is nonzero, it is
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* decremented; otherwise, the completion action is performed, and if
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* this completer itself has a completer, the process is continued
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* with its completer. As is the case with related synchronization
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* components such as {@link java.util.concurrent.Phaser Phaser} and
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* {@link java.util.concurrent.Semaphore Semaphore}, these methods
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* affect only internal counts; they do not establish any further
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* internal bookkeeping. In particular, the identities of pending
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* tasks are not maintained. As illustrated below, you can create
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* subclasses that do record some or all pending tasks or their
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* results when needed. As illustrated below, utility methods
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* supporting customization of completion traversals are also
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* provided. However, because CountedCompleters provide only basic
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* synchronization mechanisms, it may be useful to create further
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* abstract subclasses that maintain linkages, fields, and additional
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* support methods appropriate for a set of related usages.
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*
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* <p>A concrete CountedCompleter class must define method {@link
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* #compute}, that should in most cases (as illustrated below), invoke
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* {@code tryComplete()} once before returning. The class may also
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* optionally override method {@link #onCompletion} to perform an
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* action upon normal completion, and method {@link
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* #onExceptionalCompletion} to perform an action upon any exception.
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*
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* <p>CountedCompleters most often do not bear results, in which case
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* they are normally declared as {@code CountedCompleter<Void>}, and
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* will always return {@code null} as a result value. In other cases,
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* you should override method {@link #getRawResult} to provide a
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* result from {@code join(), invoke()}, and related methods. In
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* general, this method should return the value of a field (or a
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* function of one or more fields) of the CountedCompleter object that
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* holds the result upon completion. Method {@link #setRawResult} by
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* default plays no role in CountedCompleters. It is possible, but
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* rarely applicable, to override this method to maintain other
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* objects or fields holding result data.
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*
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* <p>A CountedCompleter that does not itself have a completer (i.e.,
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* one for which {@link #getCompleter} returns {@code null}) can be
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* used as a regular ForkJoinTask with this added functionality.
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* However, any completer that in turn has another completer serves
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* only as an internal helper for other computations, so its own task
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* status (as reported in methods such as {@link ForkJoinTask#isDone})
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* is arbitrary; this status changes only upon explicit invocations of
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* {@link #complete}, {@link ForkJoinTask#cancel}, {@link
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* ForkJoinTask#completeExceptionally} or upon exceptional completion
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* of method {@code compute}. Upon any exceptional completion, the
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* exception may be relayed to a task's completer (and its completer,
|
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* and so on), if one exists and it has not otherwise already
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* completed. Similarly, cancelling an internal CountedCompleter has
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* only a local effect on that completer, so is not often useful.
|
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*
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* <p><b>Sample Usages.</b>
|
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*
|
||||
* <p><b>Parallel recursive decomposition.</b> CountedCompleters may
|
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* be arranged in trees similar to those often used with {@link
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||||
* RecursiveAction}s, although the constructions involved in setting
|
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* them up typically vary. Here, the completer of each task is its
|
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* parent in the computation tree. Even though they entail a bit more
|
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* bookkeeping, CountedCompleters may be better choices when applying
|
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* a possibly time-consuming operation (that cannot be further
|
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* subdivided) to each element of an array or collection; especially
|
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* when the operation takes a significantly different amount of time
|
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* to complete for some elements than others, either because of
|
||||
* intrinsic variation (for example I/O) or auxiliary effects such as
|
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* garbage collection. Because CountedCompleters provide their own
|
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* continuations, other threads need not block waiting to perform
|
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* them.
|
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*
|
||||
* <p>For example, here is an initial version of a class that uses
|
||||
* divide-by-two recursive decomposition to divide work into single
|
||||
* pieces (leaf tasks). Even when work is split into individual calls,
|
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* tree-based techniques are usually preferable to directly forking
|
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* leaf tasks, because they reduce inter-thread communication and
|
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* improve load balancing. In the recursive case, the second of each
|
||||
* pair of subtasks to finish triggers completion of its parent
|
||||
* (because no result combination is performed, the default no-op
|
||||
* implementation of method {@code onCompletion} is not overridden). A
|
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* static utility method sets up the base task and invokes it
|
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* (here, implicitly using the {@link ForkJoinPool#commonPool()}).
|
||||
*
|
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* <pre> {@code
|
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* class MyOperation<E> { void apply(E e) { ... } }
|
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*
|
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* class ForEach<E> extends CountedCompleter<Void> {
|
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*
|
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* public static <E> void forEach(E[] array, MyOperation<E> op) {
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* new ForEach<E>(null, array, op, 0, array.length).invoke();
|
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* }
|
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*
|
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* final E[] array; final MyOperation<E> op; final int lo, hi;
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* ForEach(CountedCompleter<?> p, E[] array, MyOperation<E> op, int lo, int hi) {
|
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* super(p);
|
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* this.array = array; this.op = op; this.lo = lo; this.hi = hi;
|
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* }
|
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*
|
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* public void compute() { // version 1
|
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* if (hi - lo >= 2) {
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* int mid = (lo + hi) >>> 1;
|
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* setPendingCount(2); // must set pending count before fork
|
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* new ForEach(this, array, op, mid, hi).fork(); // right child
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* new ForEach(this, array, op, lo, mid).fork(); // left child
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* }
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* else if (hi > lo)
|
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* op.apply(array[lo]);
|
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* tryComplete();
|
||||
* }
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||||
* }}</pre>
|
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*
|
||||
* This design can be improved by noticing that in the recursive case,
|
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* the task has nothing to do after forking its right task, so can
|
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* directly invoke its left task before returning. (This is an analog
|
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* of tail recursion removal.) Also, because the task returns upon
|
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* executing its left task (rather than falling through to invoke
|
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* {@code tryComplete}) the pending count is set to one:
|
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*
|
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* <pre> {@code
|
||||
* class ForEach<E> ...
|
||||
* public void compute() { // version 2
|
||||
* if (hi - lo >= 2) {
|
||||
* int mid = (lo + hi) >>> 1;
|
||||
* setPendingCount(1); // only one pending
|
||||
* new ForEach(this, array, op, mid, hi).fork(); // right child
|
||||
* new ForEach(this, array, op, lo, mid).compute(); // direct invoke
|
||||
* }
|
||||
* else {
|
||||
* if (hi > lo)
|
||||
* op.apply(array[lo]);
|
||||
* tryComplete();
|
||||
* }
|
||||
* }
|
||||
* }</pre>
|
||||
*
|
||||
* As a further improvement, notice that the left task need not even
|
||||
* exist. Instead of creating a new one, we can iterate using the
|
||||
* original task, and add a pending count for each fork. Additionally,
|
||||
* because no task in this tree implements an {@link #onCompletion}
|
||||
* method, {@code tryComplete()} can be replaced with {@link
|
||||
* #propagateCompletion}.
|
||||
*
|
||||
* <pre> {@code
|
||||
* class ForEach<E> ...
|
||||
* public void compute() { // version 3
|
||||
* int l = lo, h = hi;
|
||||
* while (h - l >= 2) {
|
||||
* int mid = (l + h) >>> 1;
|
||||
* addToPendingCount(1);
|
||||
* new ForEach(this, array, op, mid, h).fork(); // right child
|
||||
* h = mid;
|
||||
* }
|
||||
* if (h > l)
|
||||
* op.apply(array[l]);
|
||||
* propagateCompletion();
|
||||
* }
|
||||
* }</pre>
|
||||
*
|
||||
* Additional improvements of such classes might entail precomputing
|
||||
* pending counts so that they can be established in constructors,
|
||||
* specializing classes for leaf steps, subdividing by say, four,
|
||||
* instead of two per iteration, and using an adaptive threshold
|
||||
* instead of always subdividing down to single elements.
|
||||
*
|
||||
* <p><b>Searching.</b> A tree of CountedCompleters can search for a
|
||||
* value or property in different parts of a data structure, and
|
||||
* report a result in an {@link
|
||||
* java.util.concurrent.atomic.AtomicReference AtomicReference} as
|
||||
* soon as one is found. The others can poll the result to avoid
|
||||
* unnecessary work. (You could additionally {@linkplain #cancel
|
||||
* cancel} other tasks, but it is usually simpler and more efficient
|
||||
* to just let them notice that the result is set and if so skip
|
||||
* further processing.) Illustrating again with an array using full
|
||||
* partitioning (again, in practice, leaf tasks will almost always
|
||||
* process more than one element):
|
||||
*
|
||||
* <pre> {@code
|
||||
* class Searcher<E> extends CountedCompleter<E> {
|
||||
* final E[] array; final AtomicReference<E> result; final int lo, hi;
|
||||
* Searcher(CountedCompleter<?> p, E[] array, AtomicReference<E> result, int lo, int hi) {
|
||||
* super(p);
|
||||
* this.array = array; this.result = result; this.lo = lo; this.hi = hi;
|
||||
* }
|
||||
* public E getRawResult() { return result.get(); }
|
||||
* public void compute() { // similar to ForEach version 3
|
||||
* int l = lo, h = hi;
|
||||
* while (result.get() == null && h >= l) {
|
||||
* if (h - l >= 2) {
|
||||
* int mid = (l + h) >>> 1;
|
||||
* addToPendingCount(1);
|
||||
* new Searcher(this, array, result, mid, h).fork();
|
||||
* h = mid;
|
||||
* }
|
||||
* else {
|
||||
* E x = array[l];
|
||||
* if (matches(x) && result.compareAndSet(null, x))
|
||||
* quietlyCompleteRoot(); // root task is now joinable
|
||||
* break;
|
||||
* }
|
||||
* }
|
||||
* tryComplete(); // normally complete whether or not found
|
||||
* }
|
||||
* boolean matches(E e) { ... } // return true if found
|
||||
*
|
||||
* public static <E> E search(E[] array) {
|
||||
* return new Searcher<E>(null, array, new AtomicReference<E>(), 0, array.length).invoke();
|
||||
* }
|
||||
* }}</pre>
|
||||
*
|
||||
* In this example, as well as others in which tasks have no other
|
||||
* effects except to compareAndSet a common result, the trailing
|
||||
* unconditional invocation of {@code tryComplete} could be made
|
||||
* conditional ({@code if (result.get() == null) tryComplete();})
|
||||
* because no further bookkeeping is required to manage completions
|
||||
* once the root task completes.
|
||||
*
|
||||
* <p><b>Recording subtasks.</b> CountedCompleter tasks that combine
|
||||
* results of multiple subtasks usually need to access these results
|
||||
* in method {@link #onCompletion}. As illustrated in the following
|
||||
* class (that performs a simplified form of map-reduce where mappings
|
||||
* and reductions are all of type {@code E}), one way to do this in
|
||||
* divide and conquer designs is to have each subtask record its
|
||||
* sibling, so that it can be accessed in method {@code onCompletion}.
|
||||
* This technique applies to reductions in which the order of
|
||||
* combining left and right results does not matter; ordered
|
||||
* reductions require explicit left/right designations. Variants of
|
||||
* other streamlinings seen in the above examples may also apply.
|
||||
*
|
||||
* <pre> {@code
|
||||
* class MyMapper<E> { E apply(E v) { ... } }
|
||||
* class MyReducer<E> { E apply(E x, E y) { ... } }
|
||||
* class MapReducer<E> extends CountedCompleter<E> {
|
||||
* final E[] array; final MyMapper<E> mapper;
|
||||
* final MyReducer<E> reducer; final int lo, hi;
|
||||
* MapReducer<E> sibling;
|
||||
* E result;
|
||||
* MapReducer(CountedCompleter<?> p, E[] array, MyMapper<E> mapper,
|
||||
* MyReducer<E> reducer, int lo, int hi) {
|
||||
* super(p);
|
||||
* this.array = array; this.mapper = mapper;
|
||||
* this.reducer = reducer; this.lo = lo; this.hi = hi;
|
||||
* }
|
||||
* public void compute() {
|
||||
* if (hi - lo >= 2) {
|
||||
* int mid = (lo + hi) >>> 1;
|
||||
* MapReducer<E> left = new MapReducer(this, array, mapper, reducer, lo, mid);
|
||||
* MapReducer<E> right = new MapReducer(this, array, mapper, reducer, mid, hi);
|
||||
* left.sibling = right;
|
||||
* right.sibling = left;
|
||||
* setPendingCount(1); // only right is pending
|
||||
* right.fork();
|
||||
* left.compute(); // directly execute left
|
||||
* }
|
||||
* else {
|
||||
* if (hi > lo)
|
||||
* result = mapper.apply(array[lo]);
|
||||
* tryComplete();
|
||||
* }
|
||||
* }
|
||||
* public void onCompletion(CountedCompleter<?> caller) {
|
||||
* if (caller != this) {
|
||||
* MapReducer<E> child = (MapReducer<E>)caller;
|
||||
* MapReducer<E> sib = child.sibling;
|
||||
* if (sib == null || sib.result == null)
|
||||
* result = child.result;
|
||||
* else
|
||||
* result = reducer.apply(child.result, sib.result);
|
||||
* }
|
||||
* }
|
||||
* public E getRawResult() { return result; }
|
||||
*
|
||||
* public static <E> E mapReduce(E[] array, MyMapper<E> mapper, MyReducer<E> reducer) {
|
||||
* return new MapReducer<E>(null, array, mapper, reducer,
|
||||
* 0, array.length).invoke();
|
||||
* }
|
||||
* }}</pre>
|
||||
*
|
||||
* Here, method {@code onCompletion} takes a form common to many
|
||||
* completion designs that combine results. This callback-style method
|
||||
* is triggered once per task, in either of the two different contexts
|
||||
* in which the pending count is, or becomes, zero: (1) by a task
|
||||
* itself, if its pending count is zero upon invocation of {@code
|
||||
* tryComplete}, or (2) by any of its subtasks when they complete and
|
||||
* decrement the pending count to zero. The {@code caller} argument
|
||||
* distinguishes cases. Most often, when the caller is {@code this},
|
||||
* no action is necessary. Otherwise the caller argument can be used
|
||||
* (usually via a cast) to supply a value (and/or links to other
|
||||
* values) to be combined. Assuming proper use of pending counts, the
|
||||
* actions inside {@code onCompletion} occur (once) upon completion of
|
||||
* a task and its subtasks. No additional synchronization is required
|
||||
* within this method to ensure thread safety of accesses to fields of
|
||||
* this task or other completed tasks.
|
||||
*
|
||||
* <p><b>Completion Traversals</b>. If using {@code onCompletion} to
|
||||
* process completions is inapplicable or inconvenient, you can use
|
||||
* methods {@link #firstComplete} and {@link #nextComplete} to create
|
||||
* custom traversals. For example, to define a MapReducer that only
|
||||
* splits out right-hand tasks in the form of the third ForEach
|
||||
* example, the completions must cooperatively reduce along
|
||||
* unexhausted subtask links, which can be done as follows:
|
||||
*
|
||||
* <pre> {@code
|
||||
* class MapReducer<E> extends CountedCompleter<E> { // version 2
|
||||
* final E[] array; final MyMapper<E> mapper;
|
||||
* final MyReducer<E> reducer; final int lo, hi;
|
||||
* MapReducer<E> forks, next; // record subtask forks in list
|
||||
* E result;
|
||||
* MapReducer(CountedCompleter<?> p, E[] array, MyMapper<E> mapper,
|
||||
* MyReducer<E> reducer, int lo, int hi, MapReducer<E> next) {
|
||||
* super(p);
|
||||
* this.array = array; this.mapper = mapper;
|
||||
* this.reducer = reducer; this.lo = lo; this.hi = hi;
|
||||
* this.next = next;
|
||||
* }
|
||||
* public void compute() {
|
||||
* int l = lo, h = hi;
|
||||
* while (h - l >= 2) {
|
||||
* int mid = (l + h) >>> 1;
|
||||
* addToPendingCount(1);
|
||||
* (forks = new MapReducer(this, array, mapper, reducer, mid, h, forks)).fork;
|
||||
* h = mid;
|
||||
* }
|
||||
* if (h > l)
|
||||
* result = mapper.apply(array[l]);
|
||||
* // process completions by reducing along and advancing subtask links
|
||||
* for (CountedCompleter<?> c = firstComplete(); c != null; c = c.nextComplete()) {
|
||||
* for (MapReducer t = (MapReducer)c, s = t.forks; s != null; s = t.forks = s.next)
|
||||
* t.result = reducer.apply(t.result, s.result);
|
||||
* }
|
||||
* }
|
||||
* public E getRawResult() { return result; }
|
||||
*
|
||||
* public static <E> E mapReduce(E[] array, MyMapper<E> mapper, MyReducer<E> reducer) {
|
||||
* return new MapReducer<E>(null, array, mapper, reducer,
|
||||
* 0, array.length, null).invoke();
|
||||
* }
|
||||
* }}</pre>
|
||||
*
|
||||
* <p><b>Triggers.</b> Some CountedCompleters are themselves never
|
||||
* forked, but instead serve as bits of plumbing in other designs;
|
||||
* including those in which the completion of one of more async tasks
|
||||
* triggers another async task. For example:
|
||||
*
|
||||
* <pre> {@code
|
||||
* class HeaderBuilder extends CountedCompleter<...> { ... }
|
||||
* class BodyBuilder extends CountedCompleter<...> { ... }
|
||||
* class PacketSender extends CountedCompleter<...> {
|
||||
* PacketSender(...) { super(null, 1); ... } // trigger on second completion
|
||||
* public void compute() { } // never called
|
||||
* public void onCompletion(CountedCompleter<?> caller) { sendPacket(); }
|
||||
* }
|
||||
* // sample use:
|
||||
* PacketSender p = new PacketSender();
|
||||
* new HeaderBuilder(p, ...).fork();
|
||||
* new BodyBuilder(p, ...).fork();
|
||||
* }</pre>
|
||||
*
|
||||
* @since 1.8
|
||||
* @author Doug Lea
|
||||
*/
|
||||
@SuppressWarnings("all")
|
||||
abstract class CountedCompleter<T> extends ForkJoinTask<T> {
|
||||
private static final long serialVersionUID = 5232453752276485070L;
|
||||
|
||||
/** This task's completer, or null if none */
|
||||
final CountedCompleter<?> completer;
|
||||
/** The number of pending tasks until completion */
|
||||
volatile int pending;
|
||||
|
||||
/**
|
||||
* Creates a new CountedCompleter with the given completer
|
||||
* and initial pending count.
|
||||
*
|
||||
* @param completer this task's completer, or {@code null} if none
|
||||
* @param initialPendingCount the initial pending count
|
||||
*/
|
||||
protected CountedCompleter(CountedCompleter<?> completer,
|
||||
int initialPendingCount) {
|
||||
this.completer = completer;
|
||||
this.pending = initialPendingCount;
|
||||
}
|
||||
|
||||
/**
|
||||
* Creates a new CountedCompleter with the given completer
|
||||
* and an initial pending count of zero.
|
||||
*
|
||||
* @param completer this task's completer, or {@code null} if none
|
||||
*/
|
||||
protected CountedCompleter(CountedCompleter<?> completer) {
|
||||
this.completer = completer;
|
||||
}
|
||||
|
||||
/**
|
||||
* Creates a new CountedCompleter with no completer
|
||||
* and an initial pending count of zero.
|
||||
*/
|
||||
protected CountedCompleter() {
|
||||
this.completer = null;
|
||||
}
|
||||
|
||||
/**
|
||||
* The main computation performed by this task.
|
||||
*/
|
||||
public abstract void compute();
|
||||
|
||||
/**
|
||||
* Performs an action when method {@link #tryComplete} is invoked
|
||||
* and the pending count is zero, or when the unconditional
|
||||
* method {@link #complete} is invoked. By default, this method
|
||||
* does nothing. You can distinguish cases by checking the
|
||||
* identity of the given caller argument. If not equal to {@code
|
||||
* this}, then it is typically a subtask that may contain results
|
||||
* (and/or links to other results) to combine.
|
||||
*
|
||||
* @param caller the task invoking this method (which may
|
||||
* be this task itself)
|
||||
*/
|
||||
public void onCompletion(CountedCompleter<?> caller) {
|
||||
}
|
||||
|
||||
/**
|
||||
* Performs an action when method {@link #completeExceptionally}
|
||||
* is invoked or method {@link #compute} throws an exception, and
|
||||
* this task has not otherwise already completed normally. On
|
||||
* entry to this method, this task {@link
|
||||
* ForkJoinTask#isCompletedAbnormally}. The return value of this
|
||||
* method controls further propagation: If {@code true} and this
|
||||
* task has a completer, then this completer is also completed
|
||||
* exceptionally. The default implementation of this method does
|
||||
* nothing except return {@code true}.
|
||||
*
|
||||
* @param ex the exception
|
||||
* @param caller the task invoking this method (which may
|
||||
* be this task itself)
|
||||
* @return true if this exception should be propagated to this
|
||||
* task's completer, if one exists
|
||||
*/
|
||||
public boolean onExceptionalCompletion(Throwable ex, CountedCompleter<?> caller) {
|
||||
return true;
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the completer established in this task's constructor,
|
||||
* or {@code null} if none.
|
||||
*
|
||||
* @return the completer
|
||||
*/
|
||||
public final CountedCompleter<?> getCompleter() {
|
||||
return completer;
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the current pending count.
|
||||
*
|
||||
* @return the current pending count
|
||||
*/
|
||||
public final int getPendingCount() {
|
||||
return pending;
|
||||
}
|
||||
|
||||
/**
|
||||
* Sets the pending count to the given value.
|
||||
*
|
||||
* @param count the count
|
||||
*/
|
||||
public final void setPendingCount(int count) {
|
||||
pending = count;
|
||||
}
|
||||
|
||||
/**
|
||||
* Adds (atomically) the given value to the pending count.
|
||||
*
|
||||
* @param delta the value to add
|
||||
*/
|
||||
public final void addToPendingCount(int delta) {
|
||||
int c; // note: can replace with intrinsic in jdk8
|
||||
do {} while (!U.compareAndSwapInt(this, PENDING, c = pending, c+delta));
|
||||
}
|
||||
|
||||
/**
|
||||
* Sets (atomically) the pending count to the given count only if
|
||||
* it currently holds the given expected value.
|
||||
*
|
||||
* @param expected the expected value
|
||||
* @param count the new value
|
||||
* @return true if successful
|
||||
*/
|
||||
public final boolean compareAndSetPendingCount(int expected, int count) {
|
||||
return U.compareAndSwapInt(this, PENDING, expected, count);
|
||||
}
|
||||
|
||||
/**
|
||||
* If the pending count is nonzero, (atomically) decrements it.
|
||||
*
|
||||
* @return the initial (undecremented) pending count holding on entry
|
||||
* to this method
|
||||
*/
|
||||
public final int decrementPendingCountUnlessZero() {
|
||||
int c;
|
||||
do {} while ((c = pending) != 0 &&
|
||||
!U.compareAndSwapInt(this, PENDING, c, c - 1));
|
||||
return c;
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the root of the current computation; i.e., this
|
||||
* task if it has no completer, else its completer's root.
|
||||
*
|
||||
* @return the root of the current computation
|
||||
*/
|
||||
public final CountedCompleter<?> getRoot() {
|
||||
CountedCompleter<?> a = this, p;
|
||||
while ((p = a.completer) != null)
|
||||
a = p;
|
||||
return a;
|
||||
}
|
||||
|
||||
/**
|
||||
* If the pending count is nonzero, decrements the count;
|
||||
* otherwise invokes {@link #onCompletion} and then similarly
|
||||
* tries to complete this task's completer, if one exists,
|
||||
* else marks this task as complete.
|
||||
*/
|
||||
public final void tryComplete() {
|
||||
CountedCompleter<?> a = this, s = a;
|
||||
for (int c;;) {
|
||||
if ((c = a.pending) == 0) {
|
||||
a.onCompletion(s);
|
||||
if ((a = (s = a).completer) == null) {
|
||||
s.quietlyComplete();
|
||||
return;
|
||||
}
|
||||
}
|
||||
else if (U.compareAndSwapInt(a, PENDING, c, c - 1))
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Equivalent to {@link #tryComplete} but does not invoke {@link
|
||||
* #onCompletion} along the completion path: If the pending count
|
||||
* is nonzero, decrements the count; otherwise, similarly tries to
|
||||
* complete this task's completer, if one exists, else marks this
|
||||
* task as complete. This method may be useful in cases where
|
||||
* {@code onCompletion} should not, or need not, be invoked for
|
||||
* each completer in a computation.
|
||||
*/
|
||||
public final void propagateCompletion() {
|
||||
CountedCompleter<?> a = this, s = a;
|
||||
for (int c;;) {
|
||||
if ((c = a.pending) == 0) {
|
||||
if ((a = (s = a).completer) == null) {
|
||||
s.quietlyComplete();
|
||||
return;
|
||||
}
|
||||
}
|
||||
else if (U.compareAndSwapInt(a, PENDING, c, c - 1))
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Regardless of pending count, invokes {@link #onCompletion},
|
||||
* marks this task as complete and further triggers {@link
|
||||
* #tryComplete} on this task's completer, if one exists. The
|
||||
* given rawResult is used as an argument to {@link #setRawResult}
|
||||
* before invoking {@link #onCompletion} or marking this task as
|
||||
* complete; its value is meaningful only for classes overriding
|
||||
* {@code setRawResult}.
|
||||
*
|
||||
* <p>This method may be useful when forcing completion as soon as
|
||||
* any one (versus all) of several subtask results are obtained.
|
||||
* However, in the common (and recommended) case in which {@code
|
||||
* setRawResult} is not overridden, this effect can be obtained
|
||||
* more simply using {@code quietlyCompleteRoot();}.
|
||||
*
|
||||
* @param rawResult the raw result
|
||||
*/
|
||||
public void complete(T rawResult) {
|
||||
CountedCompleter<?> p;
|
||||
setRawResult(rawResult);
|
||||
onCompletion(this);
|
||||
quietlyComplete();
|
||||
if ((p = completer) != null)
|
||||
p.tryComplete();
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* If this task's pending count is zero, returns this task;
|
||||
* otherwise decrements its pending count and returns {@code
|
||||
* null}. This method is designed to be used with {@link
|
||||
* #nextComplete} in completion traversal loops.
|
||||
*
|
||||
* @return this task, if pending count was zero, else {@code null}
|
||||
*/
|
||||
public final CountedCompleter<?> firstComplete() {
|
||||
for (int c;;) {
|
||||
if ((c = pending) == 0)
|
||||
return this;
|
||||
else if (U.compareAndSwapInt(this, PENDING, c, c - 1))
|
||||
return null;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* If this task does not have a completer, invokes {@link
|
||||
* ForkJoinTask#quietlyComplete} and returns {@code null}. Or, if
|
||||
* this task's pending count is non-zero, decrements its pending
|
||||
* count and returns {@code null}. Otherwise, returns the
|
||||
* completer. This method can be used as part of a completion
|
||||
* traversal loop for homogeneous task hierarchies:
|
||||
*
|
||||
* <pre> {@code
|
||||
* for (CountedCompleter<?> c = firstComplete();
|
||||
* c != null;
|
||||
* c = c.nextComplete()) {
|
||||
* // ... process c ...
|
||||
* }}</pre>
|
||||
*
|
||||
* @return the completer, or {@code null} if none
|
||||
*/
|
||||
public final CountedCompleter<?> nextComplete() {
|
||||
CountedCompleter<?> p;
|
||||
if ((p = completer) != null)
|
||||
return p.firstComplete();
|
||||
else {
|
||||
quietlyComplete();
|
||||
return null;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Equivalent to {@code getRoot().quietlyComplete()}.
|
||||
*/
|
||||
public final void quietlyCompleteRoot() {
|
||||
for (CountedCompleter<?> a = this, p;;) {
|
||||
if ((p = a.completer) == null) {
|
||||
a.quietlyComplete();
|
||||
return;
|
||||
}
|
||||
a = p;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Supports ForkJoinTask exception propagation.
|
||||
*/
|
||||
void internalPropagateException(Throwable ex) {
|
||||
CountedCompleter<?> a = this, s = a;
|
||||
while (a.onExceptionalCompletion(ex, s) &&
|
||||
(a = (s = a).completer) != null && a.status >= 0)
|
||||
a.recordExceptionalCompletion(ex);
|
||||
}
|
||||
|
||||
/**
|
||||
* Implements execution conventions for CountedCompleters.
|
||||
*/
|
||||
protected final boolean exec() {
|
||||
compute();
|
||||
return false;
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the result of the computation. By default
|
||||
* returns {@code null}, which is appropriate for {@code Void}
|
||||
* actions, but in other cases should be overridden, almost
|
||||
* always to return a field or function of a field that
|
||||
* holds the result upon completion.
|
||||
*
|
||||
* @return the result of the computation
|
||||
*/
|
||||
public T getRawResult() { return null; }
|
||||
|
||||
/**
|
||||
* A method that result-bearing CountedCompleters may optionally
|
||||
* use to help maintain result data. By default, does nothing.
|
||||
* Overrides are not recommended. However, if this method is
|
||||
* overridden to update existing objects or fields, then it must
|
||||
* in general be defined to be thread-safe.
|
||||
*/
|
||||
protected void setRawResult(T t) { }
|
||||
|
||||
// Unsafe mechanics
|
||||
private static final sun.misc.Unsafe U;
|
||||
private static final long PENDING;
|
||||
static {
|
||||
try {
|
||||
U = getUnsafe();
|
||||
PENDING = U.objectFieldOffset
|
||||
(CountedCompleter.class.getDeclaredField("pending"));
|
||||
} catch (Exception e) {
|
||||
throw new Error(e);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns a sun.misc.Unsafe. Suitable for use in a 3rd party package.
|
||||
* Replace with a simple call to Unsafe.getUnsafe when integrating
|
||||
* into a jdk.
|
||||
*
|
||||
* @return a sun.misc.Unsafe
|
||||
*/
|
||||
private static sun.misc.Unsafe getUnsafe() {
|
||||
try {
|
||||
return sun.misc.Unsafe.getUnsafe();
|
||||
} catch (SecurityException tryReflectionInstead) {}
|
||||
try {
|
||||
return java.security.AccessController.doPrivileged
|
||||
(new java.security.PrivilegedExceptionAction<sun.misc.Unsafe>() {
|
||||
public sun.misc.Unsafe run() throws Exception {
|
||||
Class<sun.misc.Unsafe> k = sun.misc.Unsafe.class;
|
||||
for (java.lang.reflect.Field f : k.getDeclaredFields()) {
|
||||
f.setAccessible(true);
|
||||
Object x = f.get(null);
|
||||
if (k.isInstance(x))
|
||||
return k.cast(x);
|
||||
}
|
||||
throw new NoSuchFieldError("the Unsafe");
|
||||
}});
|
||||
} catch (java.security.PrivilegedActionException e) {
|
||||
throw new RuntimeException("Could not initialize intrinsics",
|
||||
e.getCause());
|
||||
}
|
||||
}
|
||||
}
|
3443
common/src/main/java/io/netty/util/internal/chmv8/ForkJoinPool.java
Normal file
3443
common/src/main/java/io/netty/util/internal/chmv8/ForkJoinPool.java
Normal file
File diff suppressed because it is too large
Load Diff
1524
common/src/main/java/io/netty/util/internal/chmv8/ForkJoinTask.java
Normal file
1524
common/src/main/java/io/netty/util/internal/chmv8/ForkJoinTask.java
Normal file
File diff suppressed because it is too large
Load Diff
|
@ -0,0 +1,138 @@
|
|||
/*
|
||||
* Copyright 2013 The Netty Project
|
||||
*
|
||||
* The Netty Project licenses this file to you under the Apache License,
|
||||
* version 2.0 (the "License"); you may not use this file except in compliance
|
||||
* with the License. You may obtain a copy of the License at:
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||||
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||
* License for the specific language governing permissions and limitations
|
||||
* under the License.
|
||||
*/
|
||||
|
||||
/*
|
||||
* Written by Doug Lea with assistance from members of JCP JSR-166
|
||||
* Expert Group and released to the public domain, as explained at
|
||||
* http://creativecommons.org/publicdomain/zero/1.0/
|
||||
*/
|
||||
|
||||
package io.netty.util.internal.chmv8;
|
||||
|
||||
/**
|
||||
* A thread managed by a {@link ForkJoinPool}, which executes
|
||||
* {@link ForkJoinTask}s.
|
||||
* This class is subclassable solely for the sake of adding
|
||||
* functionality -- there are no overridable methods dealing with
|
||||
* scheduling or execution. However, you can override initialization
|
||||
* and termination methods surrounding the main task processing loop.
|
||||
* If you do create such a subclass, you will also need to supply a
|
||||
* custom {@link ForkJoinPool.ForkJoinWorkerThreadFactory} to use it
|
||||
* in a {@code ForkJoinPool}.
|
||||
*
|
||||
* @since 1.7
|
||||
* @author Doug Lea
|
||||
*/
|
||||
@SuppressWarnings("all")
|
||||
final class ForkJoinWorkerThread extends Thread {
|
||||
/*
|
||||
* ForkJoinWorkerThreads are managed by ForkJoinPools and perform
|
||||
* ForkJoinTasks. For explanation, see the internal documentation
|
||||
* of class ForkJoinPool.
|
||||
*
|
||||
* This class just maintains links to its pool and WorkQueue. The
|
||||
* pool field is set immediately upon construction, but the
|
||||
* workQueue field is not set until a call to registerWorker
|
||||
* completes. This leads to a visibility race, that is tolerated
|
||||
* by requiring that the workQueue field is only accessed by the
|
||||
* owning thread.
|
||||
*/
|
||||
|
||||
final ForkJoinPool pool; // the pool this thread works in
|
||||
final ForkJoinPool.WorkQueue workQueue; // work-stealing mechanics
|
||||
|
||||
/**
|
||||
* Creates a ForkJoinWorkerThread operating in the given pool.
|
||||
*
|
||||
* @param pool the pool this thread works in
|
||||
* @throws NullPointerException if pool is null
|
||||
*/
|
||||
protected ForkJoinWorkerThread(ForkJoinPool pool) {
|
||||
// Use a placeholder until a useful name can be set in registerWorker
|
||||
super("aForkJoinWorkerThread");
|
||||
this.pool = pool;
|
||||
this.workQueue = pool.registerWorker(this);
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the pool hosting this thread.
|
||||
*
|
||||
* @return the pool
|
||||
*/
|
||||
public ForkJoinPool getPool() {
|
||||
return pool;
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the index number of this thread in its pool. The
|
||||
* returned value ranges from zero to the maximum number of
|
||||
* threads (minus one) that have ever been created in the pool.
|
||||
* This method may be useful for applications that track status or
|
||||
* collect results per-worker rather than per-task.
|
||||
*
|
||||
* @return the index number
|
||||
*/
|
||||
public int getPoolIndex() {
|
||||
return workQueue.poolIndex;
|
||||
}
|
||||
|
||||
/**
|
||||
* Initializes internal state after construction but before
|
||||
* processing any tasks. If you override this method, you must
|
||||
* invoke {@code super.onStart()} at the beginning of the method.
|
||||
* Initialization requires care: Most fields must have legal
|
||||
* default values, to ensure that attempted accesses from other
|
||||
* threads work correctly even before this thread starts
|
||||
* processing tasks.
|
||||
*/
|
||||
protected void onStart() {
|
||||
}
|
||||
|
||||
/**
|
||||
* Performs cleanup associated with termination of this worker
|
||||
* thread. If you override this method, you must invoke
|
||||
* {@code super.onTermination} at the end of the overridden method.
|
||||
*
|
||||
* @param exception the exception causing this thread to abort due
|
||||
* to an unrecoverable error, or {@code null} if completed normally
|
||||
*/
|
||||
protected void onTermination(Throwable exception) {
|
||||
}
|
||||
|
||||
/**
|
||||
* This method is required to be public, but should never be
|
||||
* called explicitly. It performs the main run loop to execute
|
||||
* {@link ForkJoinTask}s.
|
||||
*/
|
||||
public void run() {
|
||||
Throwable exception = null;
|
||||
try {
|
||||
onStart();
|
||||
pool.runWorker(workQueue);
|
||||
} catch (Throwable ex) {
|
||||
exception = ex;
|
||||
} finally {
|
||||
try {
|
||||
onTermination(exception);
|
||||
} catch (Throwable ex) {
|
||||
if (exception == null)
|
||||
exception = ex;
|
||||
} finally {
|
||||
pool.deregisterWorker(this, exception);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
215
common/src/main/java/io/netty/util/internal/chmv8/LongAdder.java
Normal file
215
common/src/main/java/io/netty/util/internal/chmv8/LongAdder.java
Normal file
|
@ -0,0 +1,215 @@
|
|||
/*
|
||||
* Copyright 2013 The Netty Project
|
||||
*
|
||||
* The Netty Project licenses this file to you under the Apache License,
|
||||
* version 2.0 (the "License"); you may not use this file except in compliance
|
||||
* with the License. You may obtain a copy of the License at:
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||||
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||
* License for the specific language governing permissions and limitations
|
||||
* under the License.
|
||||
*/
|
||||
|
||||
/*
|
||||
* Written by Doug Lea with assistance from members of JCP JSR-166
|
||||
* Expert Group and released to the public domain, as explained at
|
||||
* http://creativecommons.org/publicdomain/zero/1.0/
|
||||
*/
|
||||
|
||||
package io.netty.util.internal.chmv8;
|
||||
import java.io.Serializable;
|
||||
|
||||
/**
|
||||
* One or more variables that together maintain an initially zero
|
||||
* {@code long} sum. When updates (method {@link #add}) are contended
|
||||
* across threads, the set of variables may grow dynamically to reduce
|
||||
* contention. Method {@link #sum} (or, equivalently, {@link
|
||||
* #longValue}) returns the current total combined across the
|
||||
* variables maintaining the sum.
|
||||
*
|
||||
* <p>This class is usually preferable to {@link java.util.concurrent.atomic.AtomicLong} when
|
||||
* multiple threads update a common sum that is used for purposes such
|
||||
* as collecting statistics, not for fine-grained synchronization
|
||||
* control. Under low update contention, the two classes have similar
|
||||
* characteristics. But under high contention, expected throughput of
|
||||
* this class is significantly higher, at the expense of higher space
|
||||
* consumption.
|
||||
*
|
||||
* <p>This class extends {@link Number}, but does <em>not</em> define
|
||||
* methods such as {@code equals}, {@code hashCode} and {@code
|
||||
* compareTo} because instances are expected to be mutated, and so are
|
||||
* not useful as collection keys.
|
||||
*
|
||||
* <p><em>jsr166e note: This class is targeted to be placed in
|
||||
* java.util.concurrent.atomic.</em>
|
||||
*
|
||||
* @since 1.8
|
||||
* @author Doug Lea
|
||||
*/
|
||||
@SuppressWarnings("all")
|
||||
final class LongAdder extends Striped64 implements Serializable {
|
||||
private static final long serialVersionUID = 7249069246863182397L;
|
||||
|
||||
/**
|
||||
* Version of plus for use in retryUpdate
|
||||
*/
|
||||
final long fn(long v, long x) { return v + x; }
|
||||
|
||||
/**
|
||||
* Creates a new adder with initial sum of zero.
|
||||
*/
|
||||
public LongAdder() {
|
||||
}
|
||||
|
||||
/**
|
||||
* Adds the given value.
|
||||
*
|
||||
* @param x the value to add
|
||||
*/
|
||||
public void add(long x) {
|
||||
Cell[] as; long b, v; HashCode hc; Cell a; int n;
|
||||
if ((as = cells) != null || !casBase(b = base, b + x)) {
|
||||
boolean uncontended = true;
|
||||
int h = (hc = threadHashCode.get()).code;
|
||||
if (as == null || (n = as.length) < 1 ||
|
||||
(a = as[(n - 1) & h]) == null ||
|
||||
!(uncontended = a.cas(v = a.value, v + x)))
|
||||
retryUpdate(x, hc, uncontended);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Equivalent to {@code add(1)}.
|
||||
*/
|
||||
public void increment() {
|
||||
add(1L);
|
||||
}
|
||||
|
||||
/**
|
||||
* Equivalent to {@code add(-1)}.
|
||||
*/
|
||||
public void decrement() {
|
||||
add(-1L);
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the current sum. The returned value is <em>NOT</em> an
|
||||
* atomic snapshot; invocation in the absence of concurrent
|
||||
* updates returns an accurate result, but concurrent updates that
|
||||
* occur while the sum is being calculated might not be
|
||||
* incorporated.
|
||||
*
|
||||
* @return the sum
|
||||
*/
|
||||
public long sum() {
|
||||
long sum = base;
|
||||
Cell[] as = cells;
|
||||
if (as != null) {
|
||||
int n = as.length;
|
||||
for (int i = 0; i < n; ++i) {
|
||||
Cell a = as[i];
|
||||
if (a != null)
|
||||
sum += a.value;
|
||||
}
|
||||
}
|
||||
return sum;
|
||||
}
|
||||
|
||||
/**
|
||||
* Resets variables maintaining the sum to zero. This method may
|
||||
* be a useful alternative to creating a new adder, but is only
|
||||
* effective if there are no concurrent updates. Because this
|
||||
* method is intrinsically racy, it should only be used when it is
|
||||
* known that no threads are concurrently updating.
|
||||
*/
|
||||
public void reset() {
|
||||
internalReset(0L);
|
||||
}
|
||||
|
||||
/**
|
||||
* Equivalent in effect to {@link #sum} followed by {@link
|
||||
* #reset}. This method may apply for example during quiescent
|
||||
* points between multithreaded computations. If there are
|
||||
* updates concurrent with this method, the returned value is
|
||||
* <em>not</em> guaranteed to be the final value occurring before
|
||||
* the reset.
|
||||
*
|
||||
* @return the sum
|
||||
*/
|
||||
public long sumThenReset() {
|
||||
long sum = base;
|
||||
Cell[] as = cells;
|
||||
base = 0L;
|
||||
if (as != null) {
|
||||
int n = as.length;
|
||||
for (int i = 0; i < n; ++i) {
|
||||
Cell a = as[i];
|
||||
if (a != null) {
|
||||
sum += a.value;
|
||||
a.value = 0L;
|
||||
}
|
||||
}
|
||||
}
|
||||
return sum;
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the String representation of the {@link #sum}.
|
||||
* @return the String representation of the {@link #sum}
|
||||
*/
|
||||
public String toString() {
|
||||
return Long.toString(sum());
|
||||
}
|
||||
|
||||
/**
|
||||
* Equivalent to {@link #sum}.
|
||||
*
|
||||
* @return the sum
|
||||
*/
|
||||
public long longValue() {
|
||||
return sum();
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the {@link #sum} as an {@code int} after a narrowing
|
||||
* primitive conversion.
|
||||
*/
|
||||
public int intValue() {
|
||||
return (int)sum();
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the {@link #sum} as a {@code float}
|
||||
* after a widening primitive conversion.
|
||||
*/
|
||||
public float floatValue() {
|
||||
return (float)sum();
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the {@link #sum} as a {@code double} after a widening
|
||||
* primitive conversion.
|
||||
*/
|
||||
public double doubleValue() {
|
||||
return (double)sum();
|
||||
}
|
||||
|
||||
private void writeObject(java.io.ObjectOutputStream s)
|
||||
throws java.io.IOException {
|
||||
s.defaultWriteObject();
|
||||
s.writeLong(sum());
|
||||
}
|
||||
|
||||
private void readObject(java.io.ObjectInputStream s)
|
||||
throws java.io.IOException, ClassNotFoundException {
|
||||
s.defaultReadObject();
|
||||
busy = 0;
|
||||
cells = null;
|
||||
base = s.readLong();
|
||||
}
|
||||
|
||||
}
|
358
common/src/main/java/io/netty/util/internal/chmv8/Striped64.java
Normal file
358
common/src/main/java/io/netty/util/internal/chmv8/Striped64.java
Normal file
|
@ -0,0 +1,358 @@
|
|||
/*
|
||||
* Copyright 2013 The Netty Project
|
||||
*
|
||||
* The Netty Project licenses this file to you under the Apache License,
|
||||
* version 2.0 (the "License"); you may not use this file except in compliance
|
||||
* with the License. You may obtain a copy of the License at:
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||||
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||
* License for the specific language governing permissions and limitations
|
||||
* under the License.
|
||||
*/
|
||||
|
||||
/*
|
||||
* Written by Doug Lea with assistance from members of JCP JSR-166
|
||||
* Expert Group and released to the public domain, as explained at
|
||||
* http://creativecommons.org/publicdomain/zero/1.0/
|
||||
*/
|
||||
|
||||
package io.netty.util.internal.chmv8;
|
||||
import java.util.Random;
|
||||
|
||||
/**
|
||||
* A package-local class holding common representation and mechanics
|
||||
* for classes supporting dynamic striping on 64bit values. The class
|
||||
* extends Number so that concrete subclasses must publicly do so.
|
||||
*/
|
||||
@SuppressWarnings("all")
|
||||
abstract class Striped64 extends Number {
|
||||
/*
|
||||
* This class maintains a lazily-initialized table of atomically
|
||||
* updated variables, plus an extra "base" field. The table size
|
||||
* is a power of two. Indexing uses masked per-thread hash codes.
|
||||
* Nearly all declarations in this class are package-private,
|
||||
* accessed directly by subclasses.
|
||||
*
|
||||
* Table entries are of class Cell; a variant of AtomicLong padded
|
||||
* to reduce cache contention on most processors. Padding is
|
||||
* overkill for most Atomics because they are usually irregularly
|
||||
* scattered in memory and thus don't interfere much with each
|
||||
* other. But Atomic objects residing in arrays will tend to be
|
||||
* placed adjacent to each other, and so will most often share
|
||||
* cache lines (with a huge negative performance impact) without
|
||||
* this precaution.
|
||||
*
|
||||
* In part because Cells are relatively large, we avoid creating
|
||||
* them until they are needed. When there is no contention, all
|
||||
* updates are made to the base field. Upon first contention (a
|
||||
* failed CAS on base update), the table is initialized to size 2.
|
||||
* The table size is doubled upon further contention until
|
||||
* reaching the nearest power of two greater than or equal to the
|
||||
* number of CPUS. Table slots remain empty (null) until they are
|
||||
* needed.
|
||||
*
|
||||
* A single spinlock ("busy") is used for initializing and
|
||||
* resizing the table, as well as populating slots with new Cells.
|
||||
* There is no need for a blocking lock; when the lock is not
|
||||
* available, threads try other slots (or the base). During these
|
||||
* retries, there is increased contention and reduced locality,
|
||||
* which is still better than alternatives.
|
||||
*
|
||||
* Per-thread hash codes are initialized to random values.
|
||||
* Contention and/or table collisions are indicated by failed
|
||||
* CASes when performing an update operation (see method
|
||||
* retryUpdate). Upon a collision, if the table size is less than
|
||||
* the capacity, it is doubled in size unless some other thread
|
||||
* holds the lock. If a hashed slot is empty, and lock is
|
||||
* available, a new Cell is created. Otherwise, if the slot
|
||||
* exists, a CAS is tried. Retries proceed by "double hashing",
|
||||
* using a secondary hash (Marsaglia XorShift) to try to find a
|
||||
* free slot.
|
||||
*
|
||||
* The table size is capped because, when there are more threads
|
||||
* than CPUs, supposing that each thread were bound to a CPU,
|
||||
* there would exist a perfect hash function mapping threads to
|
||||
* slots that eliminates collisions. When we reach capacity, we
|
||||
* search for this mapping by randomly varying the hash codes of
|
||||
* colliding threads. Because search is random, and collisions
|
||||
* only become known via CAS failures, convergence can be slow,
|
||||
* and because threads are typically not bound to CPUS forever,
|
||||
* may not occur at all. However, despite these limitations,
|
||||
* observed contention rates are typically low in these cases.
|
||||
*
|
||||
* It is possible for a Cell to become unused when threads that
|
||||
* once hashed to it terminate, as well as in the case where
|
||||
* doubling the table causes no thread to hash to it under
|
||||
* expanded mask. We do not try to detect or remove such cells,
|
||||
* under the assumption that for long-running instances, observed
|
||||
* contention levels will recur, so the cells will eventually be
|
||||
* needed again; and for short-lived ones, it does not matter.
|
||||
*/
|
||||
|
||||
/**
|
||||
* Padded variant of AtomicLong supporting only raw accesses plus CAS.
|
||||
* The value field is placed between pads, hoping that the JVM doesn't
|
||||
* reorder them.
|
||||
*
|
||||
* JVM intrinsics note: It would be possible to use a release-only
|
||||
* form of CAS here, if it were provided.
|
||||
*/
|
||||
static final class Cell {
|
||||
volatile long p0, p1, p2, p3, p4, p5, p6;
|
||||
volatile long value;
|
||||
volatile long q0, q1, q2, q3, q4, q5, q6;
|
||||
Cell(long x) { value = x; }
|
||||
|
||||
final boolean cas(long cmp, long val) {
|
||||
return UNSAFE.compareAndSwapLong(this, valueOffset, cmp, val);
|
||||
}
|
||||
|
||||
// Unsafe mechanics
|
||||
private static final sun.misc.Unsafe UNSAFE;
|
||||
private static final long valueOffset;
|
||||
static {
|
||||
try {
|
||||
UNSAFE = getUnsafe();
|
||||
Class<?> ak = Cell.class;
|
||||
valueOffset = UNSAFE.objectFieldOffset
|
||||
(ak.getDeclaredField("value"));
|
||||
} catch (Exception e) {
|
||||
throw new Error(e);
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
* Holder for the thread-local hash code. The code is initially
|
||||
* random, but may be set to a different value upon collisions.
|
||||
*/
|
||||
static final class HashCode {
|
||||
static final Random rng = new Random();
|
||||
int code;
|
||||
HashCode() {
|
||||
int h = rng.nextInt(); // Avoid zero to allow xorShift rehash
|
||||
code = (h == 0) ? 1 : h;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* The corresponding ThreadLocal class
|
||||
*/
|
||||
static final class ThreadHashCode extends ThreadLocal<HashCode> {
|
||||
public HashCode initialValue() { return new HashCode(); }
|
||||
}
|
||||
|
||||
/**
|
||||
* Static per-thread hash codes. Shared across all instances to
|
||||
* reduce ThreadLocal pollution and because adjustments due to
|
||||
* collisions in one table are likely to be appropriate for
|
||||
* others.
|
||||
*/
|
||||
static final ThreadHashCode threadHashCode = new ThreadHashCode();
|
||||
|
||||
/** Number of CPUS, to place bound on table size */
|
||||
static final int NCPU = Runtime.getRuntime().availableProcessors();
|
||||
|
||||
/**
|
||||
* Table of cells. When non-null, size is a power of 2.
|
||||
*/
|
||||
transient volatile Cell[] cells;
|
||||
|
||||
/**
|
||||
* Base value, used mainly when there is no contention, but also as
|
||||
* a fallback during table initialization races. Updated via CAS.
|
||||
*/
|
||||
transient volatile long base;
|
||||
|
||||
/**
|
||||
* Spinlock (locked via CAS) used when resizing and/or creating Cells.
|
||||
*/
|
||||
transient volatile int busy;
|
||||
|
||||
/**
|
||||
* Package-private default constructor
|
||||
*/
|
||||
Striped64() {
|
||||
}
|
||||
|
||||
/**
|
||||
* CASes the base field.
|
||||
*/
|
||||
final boolean casBase(long cmp, long val) {
|
||||
return UNSAFE.compareAndSwapLong(this, baseOffset, cmp, val);
|
||||
}
|
||||
|
||||
/**
|
||||
* CASes the busy field from 0 to 1 to acquire lock.
|
||||
*/
|
||||
final boolean casBusy() {
|
||||
return UNSAFE.compareAndSwapInt(this, busyOffset, 0, 1);
|
||||
}
|
||||
|
||||
/**
|
||||
* Computes the function of current and new value. Subclasses
|
||||
* should open-code this update function for most uses, but the
|
||||
* virtualized form is needed within retryUpdate.
|
||||
*
|
||||
* @param currentValue the current value (of either base or a cell)
|
||||
* @param newValue the argument from a user update call
|
||||
* @return result of the update function
|
||||
*/
|
||||
abstract long fn(long currentValue, long newValue);
|
||||
|
||||
/**
|
||||
* Handles cases of updates involving initialization, resizing,
|
||||
* creating new Cells, and/or contention. See above for
|
||||
* explanation. This method suffers the usual non-modularity
|
||||
* problems of optimistic retry code, relying on rechecked sets of
|
||||
* reads.
|
||||
*
|
||||
* @param x the value
|
||||
* @param hc the hash code holder
|
||||
* @param wasUncontended false if CAS failed before call
|
||||
*/
|
||||
final void retryUpdate(long x, HashCode hc, boolean wasUncontended) {
|
||||
int h = hc.code;
|
||||
boolean collide = false; // True if last slot nonempty
|
||||
for (;;) {
|
||||
Cell[] as; Cell a; int n; long v;
|
||||
if ((as = cells) != null && (n = as.length) > 0) {
|
||||
if ((a = as[(n - 1) & h]) == null) {
|
||||
if (busy == 0) { // Try to attach new Cell
|
||||
Cell r = new Cell(x); // Optimistically create
|
||||
if (busy == 0 && casBusy()) {
|
||||
boolean created = false;
|
||||
try { // Recheck under lock
|
||||
Cell[] rs; int m, j;
|
||||
if ((rs = cells) != null &&
|
||||
(m = rs.length) > 0 &&
|
||||
rs[j = (m - 1) & h] == null) {
|
||||
rs[j] = r;
|
||||
created = true;
|
||||
}
|
||||
} finally {
|
||||
busy = 0;
|
||||
}
|
||||
if (created)
|
||||
break;
|
||||
continue; // Slot is now non-empty
|
||||
}
|
||||
}
|
||||
collide = false;
|
||||
}
|
||||
else if (!wasUncontended) // CAS already known to fail
|
||||
wasUncontended = true; // Continue after rehash
|
||||
else if (a.cas(v = a.value, fn(v, x)))
|
||||
break;
|
||||
else if (n >= NCPU || cells != as)
|
||||
collide = false; // At max size or stale
|
||||
else if (!collide)
|
||||
collide = true;
|
||||
else if (busy == 0 && casBusy()) {
|
||||
try {
|
||||
if (cells == as) { // Expand table unless stale
|
||||
Cell[] rs = new Cell[n << 1];
|
||||
for (int i = 0; i < n; ++i)
|
||||
rs[i] = as[i];
|
||||
cells = rs;
|
||||
}
|
||||
} finally {
|
||||
busy = 0;
|
||||
}
|
||||
collide = false;
|
||||
continue; // Retry with expanded table
|
||||
}
|
||||
h ^= h << 13; // Rehash
|
||||
h ^= h >>> 17;
|
||||
h ^= h << 5;
|
||||
}
|
||||
else if (busy == 0 && cells == as && casBusy()) {
|
||||
boolean init = false;
|
||||
try { // Initialize table
|
||||
if (cells == as) {
|
||||
Cell[] rs = new Cell[2];
|
||||
rs[h & 1] = new Cell(x);
|
||||
cells = rs;
|
||||
init = true;
|
||||
}
|
||||
} finally {
|
||||
busy = 0;
|
||||
}
|
||||
if (init)
|
||||
break;
|
||||
}
|
||||
else if (casBase(v = base, fn(v, x)))
|
||||
break; // Fall back on using base
|
||||
}
|
||||
hc.code = h; // Record index for next time
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Sets base and all cells to the given value.
|
||||
*/
|
||||
final void internalReset(long initialValue) {
|
||||
Cell[] as = cells;
|
||||
base = initialValue;
|
||||
if (as != null) {
|
||||
int n = as.length;
|
||||
for (int i = 0; i < n; ++i) {
|
||||
Cell a = as[i];
|
||||
if (a != null)
|
||||
a.value = initialValue;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Unsafe mechanics
|
||||
private static final sun.misc.Unsafe UNSAFE;
|
||||
private static final long baseOffset;
|
||||
private static final long busyOffset;
|
||||
static {
|
||||
try {
|
||||
UNSAFE = getUnsafe();
|
||||
Class<?> sk = Striped64.class;
|
||||
baseOffset = UNSAFE.objectFieldOffset
|
||||
(sk.getDeclaredField("base"));
|
||||
busyOffset = UNSAFE.objectFieldOffset
|
||||
(sk.getDeclaredField("busy"));
|
||||
} catch (Exception e) {
|
||||
throw new Error(e);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns a sun.misc.Unsafe. Suitable for use in a 3rd party package.
|
||||
* Replace with a simple call to Unsafe.getUnsafe when integrating
|
||||
* into a jdk.
|
||||
*
|
||||
* @return a sun.misc.Unsafe
|
||||
*/
|
||||
private static sun.misc.Unsafe getUnsafe() {
|
||||
try {
|
||||
return sun.misc.Unsafe.getUnsafe();
|
||||
} catch (SecurityException tryReflectionInstead) {}
|
||||
try {
|
||||
return java.security.AccessController.doPrivileged
|
||||
(new java.security.PrivilegedExceptionAction<sun.misc.Unsafe>() {
|
||||
public sun.misc.Unsafe run() throws Exception {
|
||||
Class<sun.misc.Unsafe> k = sun.misc.Unsafe.class;
|
||||
for (java.lang.reflect.Field f : k.getDeclaredFields()) {
|
||||
f.setAccessible(true);
|
||||
Object x = f.get(null);
|
||||
if (k.isInstance(x))
|
||||
return k.cast(x);
|
||||
}
|
||||
throw new NoSuchFieldError("the Unsafe");
|
||||
}});
|
||||
} catch (java.security.PrivilegedActionException e) {
|
||||
throw new RuntimeException("Could not initialize intrinsics",
|
||||
e.getCause());
|
||||
}
|
||||
}
|
||||
}
|
|
@ -0,0 +1,20 @@
|
|||
/*
|
||||
* Copyright 2013 The Netty Project
|
||||
*
|
||||
* The Netty Project licenses this file to you under the Apache License,
|
||||
* version 2.0 (the "License"); you may not use this file except in compliance
|
||||
* with the License. You may obtain a copy of the License at:
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||||
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||
* License for the specific language governing permissions and limitations
|
||||
* under the License.
|
||||
*/
|
||||
|
||||
/**
|
||||
* <em>Internal-use-only</em> logging API which is not allowed to be used outside Netty.
|
||||
*/
|
||||
package io.netty.util.internal.logging;
|
|
@ -15,21 +15,22 @@
|
|||
*/
|
||||
package io.netty.util;
|
||||
|
||||
import static org.junit.Assert.*;
|
||||
|
||||
import java.util.ArrayList;
|
||||
import java.util.concurrent.ConcurrentHashMap;
|
||||
|
||||
import io.netty.util.internal.PlatformDependent;
|
||||
import org.junit.Before;
|
||||
import org.junit.Test;
|
||||
|
||||
import java.util.ArrayList;
|
||||
import java.util.concurrent.ConcurrentMap;
|
||||
|
||||
import static org.junit.Assert.*;
|
||||
|
||||
public class UniqueNameTest {
|
||||
|
||||
/**
|
||||
* A {@link ConcurrentHashMap} of registered names.
|
||||
* A {@link ConcurrentMap} of registered names.
|
||||
* This is set up before each test
|
||||
*/
|
||||
private ConcurrentHashMap<String, Boolean> names;
|
||||
private ConcurrentMap<String, Boolean> names;
|
||||
|
||||
/**
|
||||
* Registers a {@link UniqueName}
|
||||
|
@ -43,7 +44,7 @@ public class UniqueNameTest {
|
|||
|
||||
@Before
|
||||
public void initializeTest() {
|
||||
names = new ConcurrentHashMap<String, Boolean>();
|
||||
names = PlatformDependent.newConcurrentHashMap();
|
||||
}
|
||||
|
||||
@Test(expected=NullPointerException.class)
|
||||
|
@ -108,7 +109,7 @@ public class UniqueNameTest {
|
|||
UniqueName one = registerName("One");
|
||||
UniqueName two = registerName("Two");
|
||||
|
||||
ConcurrentHashMap<String, Boolean> mapTwo = new ConcurrentHashMap<String, Boolean>();
|
||||
ConcurrentMap<String, Boolean> mapTwo = PlatformDependent.newConcurrentHashMap();
|
||||
|
||||
UniqueName three = new UniqueName(mapTwo, "One");
|
||||
|
||||
|
|
2
pom.xml
2
pom.xml
|
@ -368,7 +368,7 @@
|
|||
<dependency>
|
||||
<groupId>${project.groupId}</groupId>
|
||||
<artifactId>netty-build</artifactId>
|
||||
<version>16</version>
|
||||
<version>17</version>
|
||||
</dependency>
|
||||
</dependencies>
|
||||
</plugin>
|
||||
|
|
|
@ -30,7 +30,6 @@ import java.net.InetSocketAddress;
|
|||
import java.net.SocketAddress;
|
||||
import java.nio.channels.ClosedChannelException;
|
||||
import java.util.Random;
|
||||
import java.util.concurrent.ConcurrentHashMap;
|
||||
import java.util.concurrent.ConcurrentMap;
|
||||
|
||||
/**
|
||||
|
@ -40,7 +39,7 @@ public abstract class AbstractChannel extends DefaultAttributeMap implements Cha
|
|||
|
||||
private static final InternalLogger logger = InternalLoggerFactory.getInstance(AbstractChannel.class);
|
||||
|
||||
static final ConcurrentMap<Integer, Channel> allChannels = new ConcurrentHashMap<Integer, Channel>();
|
||||
static final ConcurrentMap<Integer, Channel> allChannels = PlatformDependent.newConcurrentHashMap();
|
||||
|
||||
private static final Random random = new Random();
|
||||
|
||||
|
|
|
@ -17,10 +17,10 @@ package io.netty.channel;
|
|||
|
||||
import io.netty.buffer.ByteBufAllocator;
|
||||
import io.netty.util.UniqueName;
|
||||
import io.netty.util.internal.PlatformDependent;
|
||||
|
||||
import java.net.InetAddress;
|
||||
import java.net.NetworkInterface;
|
||||
import java.util.concurrent.ConcurrentHashMap;
|
||||
import java.util.concurrent.ConcurrentMap;
|
||||
|
||||
/**
|
||||
|
@ -33,7 +33,7 @@ import java.util.concurrent.ConcurrentMap;
|
|||
*/
|
||||
public class ChannelOption<T> extends UniqueName {
|
||||
|
||||
private static final ConcurrentMap<String, Boolean> names = new ConcurrentHashMap<String, Boolean>();
|
||||
private static final ConcurrentMap<String, Boolean> names = PlatformDependent.newConcurrentHashMap();
|
||||
|
||||
public static final ChannelOption<ByteBufAllocator> ALLOCATOR = new ChannelOption<ByteBufAllocator>("ALLOCATOR");
|
||||
public static final ChannelOption<Integer> CONNECT_TIMEOUT_MILLIS =
|
||||
|
|
|
@ -21,6 +21,7 @@ import io.netty.channel.ChannelFuture;
|
|||
import io.netty.channel.ChannelFutureListener;
|
||||
import io.netty.channel.FileRegion;
|
||||
import io.netty.channel.ServerChannel;
|
||||
import io.netty.util.internal.PlatformDependent;
|
||||
|
||||
import java.util.AbstractSet;
|
||||
import java.util.ArrayList;
|
||||
|
@ -28,7 +29,6 @@ import java.util.Collection;
|
|||
import java.util.Iterator;
|
||||
import java.util.LinkedHashMap;
|
||||
import java.util.Map;
|
||||
import java.util.concurrent.ConcurrentHashMap;
|
||||
import java.util.concurrent.ConcurrentMap;
|
||||
import java.util.concurrent.atomic.AtomicInteger;
|
||||
|
||||
|
@ -40,8 +40,8 @@ public class DefaultChannelGroup extends AbstractSet<Channel> implements Channel
|
|||
private static final AtomicInteger nextId = new AtomicInteger();
|
||||
|
||||
private final String name;
|
||||
private final ConcurrentMap<Integer, Channel> serverChannels = new ConcurrentHashMap<Integer, Channel>();
|
||||
private final ConcurrentMap<Integer, Channel> nonServerChannels = new ConcurrentHashMap<Integer, Channel>();
|
||||
private final ConcurrentMap<Integer, Channel> serverChannels = PlatformDependent.newConcurrentHashMap();
|
||||
private final ConcurrentMap<Integer, Channel> nonServerChannels = PlatformDependent.newConcurrentHashMap();
|
||||
private final ChannelFutureListener remover = new ChannelFutureListener() {
|
||||
@Override
|
||||
public void operationComplete(ChannelFuture future) throws Exception {
|
||||
|
|
|
@ -17,15 +17,14 @@ package io.netty.channel.local;
|
|||
|
||||
import io.netty.channel.Channel;
|
||||
import io.netty.channel.ChannelException;
|
||||
import io.netty.util.internal.PlatformDependent;
|
||||
|
||||
import java.net.SocketAddress;
|
||||
import java.util.concurrent.ConcurrentHashMap;
|
||||
import java.util.concurrent.ConcurrentMap;
|
||||
|
||||
final class LocalChannelRegistry {
|
||||
|
||||
private static final ConcurrentMap<LocalAddress, Channel> boundChannels =
|
||||
new ConcurrentHashMap<LocalAddress, Channel>();
|
||||
private static final ConcurrentMap<LocalAddress, Channel> boundChannels = PlatformDependent.newConcurrentHashMap();
|
||||
|
||||
static LocalAddress register(
|
||||
Channel channel, LocalAddress oldLocalAddress, SocketAddress localAddress) {
|
||||
|
|
|
@ -23,11 +23,11 @@ import io.netty.channel.ChannelPromise;
|
|||
import io.netty.channel.ChannelTaskScheduler;
|
||||
import io.netty.channel.EventLoop;
|
||||
import io.netty.channel.EventLoopGroup;
|
||||
import io.netty.util.internal.PlatformDependent;
|
||||
|
||||
import java.util.Collections;
|
||||
import java.util.Queue;
|
||||
import java.util.Set;
|
||||
import java.util.concurrent.ConcurrentHashMap;
|
||||
import java.util.concurrent.ConcurrentLinkedQueue;
|
||||
import java.util.concurrent.Executors;
|
||||
import java.util.concurrent.ThreadFactory;
|
||||
|
@ -44,7 +44,7 @@ public class OioEventLoopGroup implements EventLoopGroup {
|
|||
final ChannelTaskScheduler scheduler;
|
||||
final ThreadFactory threadFactory;
|
||||
final Set<OioEventLoop> activeChildren = Collections.newSetFromMap(
|
||||
new ConcurrentHashMap<OioEventLoop, Boolean>());
|
||||
PlatformDependent.<OioEventLoop, Boolean>newConcurrentHashMap());
|
||||
final Queue<OioEventLoop> idleChildren = new ConcurrentLinkedQueue<OioEventLoop>();
|
||||
private final ChannelException tooManyChannels;
|
||||
|
||||
|
|
|
@ -21,13 +21,13 @@ import io.netty.channel.ChannelOption;
|
|||
import io.netty.channel.DefaultChannelConfig;
|
||||
import io.netty.channel.socket.ServerSocketChannelConfig;
|
||||
import io.netty.util.NetUtil;
|
||||
import io.netty.util.internal.PlatformDependent;
|
||||
|
||||
import java.io.IOException;
|
||||
import java.net.SocketOption;
|
||||
import java.net.StandardSocketOptions;
|
||||
import java.nio.channels.AsynchronousServerSocketChannel;
|
||||
import java.util.Map;
|
||||
import java.util.concurrent.ConcurrentHashMap;
|
||||
import java.util.concurrent.atomic.AtomicReference;
|
||||
|
||||
import static io.netty.channel.ChannelOption.*;
|
||||
|
@ -40,7 +40,7 @@ final class AioServerSocketChannelConfig extends DefaultChannelConfig implements
|
|||
private final AtomicReference<AsynchronousServerSocketChannel> javaChannel
|
||||
= new AtomicReference<AsynchronousServerSocketChannel>();
|
||||
private volatile int backlog = NetUtil.SOMAXCONN;
|
||||
private Map<SocketOption<?>, Object> options = new ConcurrentHashMap<SocketOption<?>, Object>();
|
||||
private Map<SocketOption<?>, Object> options = PlatformDependent.newConcurrentHashMap();
|
||||
private static final int DEFAULT_SND_BUF_SIZE = 32 * 1024;
|
||||
private static final boolean DEFAULT_SO_REUSEADDR = false;
|
||||
|
||||
|
|
|
@ -26,7 +26,6 @@ import java.net.SocketOption;
|
|||
import java.net.StandardSocketOptions;
|
||||
import java.nio.channels.NetworkChannel;
|
||||
import java.util.Map;
|
||||
import java.util.concurrent.ConcurrentHashMap;
|
||||
import java.util.concurrent.atomic.AtomicReference;
|
||||
|
||||
import static io.netty.channel.ChannelOption.*;
|
||||
|
@ -41,7 +40,7 @@ final class DefaultAioSocketChannelConfig extends DefaultChannelConfig
|
|||
private volatile boolean allowHalfClosure;
|
||||
private volatile long readTimeoutInMillis;
|
||||
private volatile long writeTimeoutInMillis;
|
||||
private Map<SocketOption<?>, Object> options = new ConcurrentHashMap<SocketOption<?>, Object>();
|
||||
private Map<SocketOption<?>, Object> options = PlatformDependent.newConcurrentHashMap();
|
||||
private static final int DEFAULT_RCV_BUF_SIZE = 32 * 1024;
|
||||
private static final int DEFAULT_SND_BUF_SIZE = 32 * 1024;
|
||||
private static final int DEFAULT_SO_LINGER = -1;
|
||||
|
|
Loading…
Reference in New Issue
Block a user