11d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert/* 21d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * Written by Doug Lea and Martin Buchholz with assistance from 31d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * members of JCP JSR-166 Expert Group and released to the public 41d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * domain, as explained at 51d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * http://creativecommons.org/publicdomain/zero/1.0/ 61d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert */ 71d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 81d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert/* 91d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * Source: 101d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * http://gee.cs.oswego.edu/cgi-bin/viewcvs.cgi/jsr166/src/jsr166e/extra/AtomicDouble.java?revision=1.13 111d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * (Modified to adapt to guava coding conventions and 121d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * to use AtomicLongFieldUpdater instead of sun.misc.Unsafe) 131d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert */ 141d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 151d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertpackage com.google.common.util.concurrent; 161d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 171d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertimport static java.lang.Double.doubleToRawLongBits; 181d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertimport static java.lang.Double.longBitsToDouble; 197dd252788645e940eada959bdde927426e2531c9Paul Duffin 201d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertimport java.util.concurrent.atomic.AtomicLongFieldUpdater; 211d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 221d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert/** 231d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * A {@code double} value that may be updated atomically. See the 241d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * {@link java.util.concurrent.atomic} package specification for 251d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * description of the properties of atomic variables. An {@code 261d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * AtomicDouble} is used in applications such as atomic accumulation, 271d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * and cannot be used as a replacement for a {@link Double}. However, 281d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * this class does extend {@code Number} to allow uniform access by 291d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * tools and utilities that deal with numerically-based classes. 301d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * 311d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * <p><a name="bitEquals">This class compares primitive {@code double} 321d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * values in methods such as {@link #compareAndSet} by comparing their 331d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * bitwise representation using {@link Double#doubleToRawLongBits}, 341d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * which differs from both the primitive double {@code ==} operator 351d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * and from {@link Double#equals}, as if implemented by: 361d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * <pre> {@code 371d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * static boolean bitEquals(double x, double y) { 381d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * long xBits = Double.doubleToRawLongBits(x); 391d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * long yBits = Double.doubleToRawLongBits(y); 401d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * return xBits == yBits; 411d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * }}</pre> 421d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * 431d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * <p>It is possible to write a more scalable updater, at the cost of 441d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * giving up strict atomicity. See for example 457dd252788645e940eada959bdde927426e2531c9Paul Duffin * <a href="http://gee.cs.oswego.edu/dl/jsr166/dist/jsr166edocs/jsr166e/DoubleAdder.html"> 467dd252788645e940eada959bdde927426e2531c9Paul Duffin * DoubleAdder</a> 471d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * and 487dd252788645e940eada959bdde927426e2531c9Paul Duffin * <a href="http://gee.cs.oswego.edu/dl/jsr166/dist/jsr166edocs/jsr166e/DoubleMaxUpdater.html"> 497dd252788645e940eada959bdde927426e2531c9Paul Duffin * DoubleMaxUpdater</a>. 501d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * 511d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * @author Doug Lea 521d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * @author Martin Buchholz 531d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * @since 11.0 541d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert */ 551d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertpublic class AtomicDouble extends Number implements java.io.Serializable { 561d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert private static final long serialVersionUID = 0L; 571d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 581d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert private transient volatile long value; 591d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 600888a09821a98ac0680fad765217302858e70fa4Paul Duffin private static final AtomicLongFieldUpdater<AtomicDouble> updater = 610888a09821a98ac0680fad765217302858e70fa4Paul Duffin AtomicLongFieldUpdater.newUpdater(AtomicDouble.class, "value"); 621d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 631d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert /** 641d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * Creates a new {@code AtomicDouble} with the given initial value. 651d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * 661d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * @param initialValue the initial value 671d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert */ 681d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public AtomicDouble(double initialValue) { 691d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert value = doubleToRawLongBits(initialValue); 701d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 711d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 721d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert /** 731d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * Creates a new {@code AtomicDouble} with initial value {@code 0.0}. 741d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert */ 751d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public AtomicDouble() { 761d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert // assert doubleToRawLongBits(0.0) == 0L; 771d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 781d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 791d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert /** 801d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * Gets the current value. 811d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * 821d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * @return the current value 831d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert */ 841d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public final double get() { 851d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert return longBitsToDouble(value); 861d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 871d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 881d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert /** 891d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * Sets to the given value. 901d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * 911d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * @param newValue the new value 921d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert */ 931d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public final void set(double newValue) { 941d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert long next = doubleToRawLongBits(newValue); 951d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert value = next; 961d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 971d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 981d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert /** 991d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * Eventually sets to the given value. 1001d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * 1011d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * @param newValue the new value 1021d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert */ 1031d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public final void lazySet(double newValue) { 1041d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert set(newValue); 1051d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert // TODO(user): replace with code below when jdk5 support is dropped. 1061d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert // long next = doubleToRawLongBits(newValue); 1071d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert // updater.lazySet(this, next); 1081d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 1091d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 1101d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert /** 1111d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * Atomically sets to the given value and returns the old value. 1121d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * 1131d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * @param newValue the new value 1141d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * @return the previous value 1151d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert */ 1161d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public final double getAndSet(double newValue) { 1171d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert long next = doubleToRawLongBits(newValue); 1181d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert return longBitsToDouble(updater.getAndSet(this, next)); 1191d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 1201d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 1211d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert /** 1221d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * Atomically sets the value to the given updated value 1231d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * if the current value is <a href="#bitEquals">bitwise equal</a> 1241d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * to the expected value. 1251d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * 1261d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * @param expect the expected value 1271d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * @param update the new value 1281d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * @return {@code true} if successful. False return indicates that 1291d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * the actual value was not bitwise equal to the expected value. 1301d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert */ 1311d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public final boolean compareAndSet(double expect, double update) { 1320888a09821a98ac0680fad765217302858e70fa4Paul Duffin return updater.compareAndSet(this, 1330888a09821a98ac0680fad765217302858e70fa4Paul Duffin doubleToRawLongBits(expect), 1340888a09821a98ac0680fad765217302858e70fa4Paul Duffin doubleToRawLongBits(update)); 1351d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 1361d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 1371d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert /** 1381d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * Atomically sets the value to the given updated value 1391d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * if the current value is <a href="#bitEquals">bitwise equal</a> 1401d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * to the expected value. 1411d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * 1421d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * <p>May <a 1431d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * href="http://download.oracle.com/javase/7/docs/api/java/util/concurrent/atomic/package-summary.html#Spurious"> 1441d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * fail spuriously</a> 1451d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * and does not provide ordering guarantees, so is only rarely an 1461d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * appropriate alternative to {@code compareAndSet}. 1471d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * 1481d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * @param expect the expected value 1491d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * @param update the new value 1501d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * @return {@code true} if successful 1511d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert */ 1521d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public final boolean weakCompareAndSet(double expect, double update) { 1530888a09821a98ac0680fad765217302858e70fa4Paul Duffin return updater.weakCompareAndSet(this, 1540888a09821a98ac0680fad765217302858e70fa4Paul Duffin doubleToRawLongBits(expect), 1550888a09821a98ac0680fad765217302858e70fa4Paul Duffin doubleToRawLongBits(update)); 1561d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 1571d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 1581d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert /** 1591d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * Atomically adds the given value to the current value. 1601d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * 1611d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * @param delta the value to add 1621d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * @return the previous value 1631d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert */ 1641d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public final double getAndAdd(double delta) { 1651d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert while (true) { 1661d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert long current = value; 1671d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert double currentVal = longBitsToDouble(current); 1681d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert double nextVal = currentVal + delta; 1691d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert long next = doubleToRawLongBits(nextVal); 1701d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert if (updater.compareAndSet(this, current, next)) { 1711d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert return currentVal; 1721d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 1731d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 1741d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 1751d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 1761d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert /** 1771d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * Atomically adds the given value to the current value. 1781d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * 1791d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * @param delta the value to add 1801d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * @return the updated value 1811d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert */ 1821d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public final double addAndGet(double delta) { 1831d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert while (true) { 1841d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert long current = value; 1851d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert double currentVal = longBitsToDouble(current); 1861d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert double nextVal = currentVal + delta; 1871d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert long next = doubleToRawLongBits(nextVal); 1881d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert if (updater.compareAndSet(this, current, next)) { 1891d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert return nextVal; 1901d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 1911d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 1921d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 1931d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 1941d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert /** 1951d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * Returns the String representation of the current value. 1961d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * @return the String representation of the current value 1971d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert */ 1981d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public String toString() { 1991d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert return Double.toString(get()); 2001d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 2011d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 2021d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert /** 2031d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * Returns the value of this {@code AtomicDouble} as an {@code int} 2041d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * after a narrowing primitive conversion. 2051d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert */ 2061d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public int intValue() { 2071d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert return (int) get(); 2081d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 2091d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 2101d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert /** 2111d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * Returns the value of this {@code AtomicDouble} as a {@code long} 2121d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * after a narrowing primitive conversion. 2131d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert */ 2141d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public long longValue() { 2151d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert return (long) get(); 2161d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 2171d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 2181d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert /** 2191d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * Returns the value of this {@code AtomicDouble} as a {@code float} 2201d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * after a narrowing primitive conversion. 2211d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert */ 2221d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public float floatValue() { 2231d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert return (float) get(); 2241d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 2251d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 2261d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert /** 2271d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * Returns the value of this {@code AtomicDouble} as a {@code double}. 2281d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert */ 2291d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public double doubleValue() { 2301d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert return get(); 2311d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 2321d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 2331d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert /** 2341d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * Saves the state to a stream (that is, serializes it). 2351d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * 2361d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * @serialData The current value is emitted (a {@code double}). 2371d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert */ 2380888a09821a98ac0680fad765217302858e70fa4Paul Duffin private void writeObject(java.io.ObjectOutputStream s) 2390888a09821a98ac0680fad765217302858e70fa4Paul Duffin throws java.io.IOException { 2401d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert s.defaultWriteObject(); 2411d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 2421d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert s.writeDouble(get()); 2431d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 2441d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 2451d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert /** 2461d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * Reconstitutes the instance from a stream (that is, deserializes it). 2471d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert */ 2480888a09821a98ac0680fad765217302858e70fa4Paul Duffin private void readObject(java.io.ObjectInputStream s) 2490888a09821a98ac0680fad765217302858e70fa4Paul Duffin throws java.io.IOException, ClassNotFoundException { 2501d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert s.defaultReadObject(); 2511d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 2521d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert set(s.readDouble()); 2531d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 2541d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert} 255