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Start for a basic atomic implementation for avian. Still need to figure out how to do the Array versions of these. But I wanted to wait till we have the needed Unsafe implementation and add testing for these before we go further.
This commit is contained in:
Mike Jensen
parent
996e52170f
commit
99c59cfe94
61
classpath/java/util/concurrent/atomic/AtomicBoolean.java
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61
classpath/java/util/concurrent/atomic/AtomicBoolean.java
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package java.util.concurrent.atomic;
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public class AtomicBoolean implements java.io.Serializable {
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private static final long serialVersionUID = 4654671469794556979L;
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private static final int FALSE_VALUE = 0;
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private static final int TRUE_VALUE = 1;
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private final AtomicInteger value;
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public AtomicBoolean() {
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this(false);
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}
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public AtomicBoolean(boolean initialValue) {
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value = new AtomicInteger(intValue(initialValue));
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}
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private static int intValue(boolean value) {
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return value ? TRUE_VALUE : FALSE_VALUE;
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}
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private static boolean booleanValue(int value) {
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if (value == TRUE_VALUE) {
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return true;
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} else {
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return false;
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}
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}
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public boolean get() {
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return booleanValue(value.get());
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}
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public boolean compareAndSet(boolean expect, boolean update) {
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return value.compareAndSet(intValue(expect), intValue(update));
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}
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public boolean weakCompareAndSet(boolean expect, boolean update) {
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return value.weakCompareAndSet(intValue(expect), intValue(update));
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}
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public void set(boolean newValue) {
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value.set(intValue(newValue));
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}
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public void lazySet(boolean newValue) {
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value.lazySet(intValue(newValue));
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}
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public boolean getAndSet(boolean newValue) {
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int intResult = value.getAndSet(intValue(newValue));
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return booleanValue(intResult);
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}
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@Override
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public String toString() {
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return Boolean.toString(get());
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}
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}
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126
classpath/java/util/concurrent/atomic/AtomicInteger.java
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126
classpath/java/util/concurrent/atomic/AtomicInteger.java
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package java.util.concurrent.atomic;
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import java.lang.reflect.Field;
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import sun.misc.Unsafe;
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public class AtomicInteger extends Number implements java.io.Serializable {
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private static final long serialVersionUID = 6214790243416807050L;
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private static final Unsafe unsafe = Unsafe.getUnsafe();
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private static final long valueOffset;
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static {
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try {
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Field<?> f = AtomicInteger.class.getDeclaredField("value");
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valueOffset = unsafe.objectFieldOffset(f);
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} catch (NoSuchFieldException e) {
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throw new Error(e);
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}
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}
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private volatile int value;
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public AtomicInteger() {
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this(0);
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}
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public AtomicInteger(int initialValue) {
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this.value = initialValue;
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}
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public int get() {
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return value;
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}
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public void set(int newValue) {
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this.value = newValue;
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}
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public void lazySet(int newValue) {
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unsafe.putOrderedInt(this, valueOffset, newValue);
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}
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public boolean compareAndSet(int expect, int update) {
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return unsafe.compareAndSwapInt(this, valueOffset, expect, update);
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}
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public boolean weakCompareAndSet(int expect, int update) {
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return unsafe.compareAndSwapInt(this, valueOffset, expect, update);
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}
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public int getAndSet(int newValue) {
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while (true) {
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int current = value;
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if (compareAndSet(current, newValue)) {
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return current;
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}
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}
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}
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public int getAndAdd(int delta) {
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while (true) {
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int current = value;
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int next = current + delta;
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if (compareAndSet(current, next)) {
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return current;
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}
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}
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}
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public int getAndIncrement() {
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return getAndAdd(1);
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}
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public int getAndDecrement() {
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return getAndAdd(-1);
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}
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public int addAndGet(int delta) {
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while (true) {
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int current = value;
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int next = current + delta;
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if (compareAndSet(current, next)) {
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return next;
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}
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}
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}
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public int incrementAndGet() {
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return addAndGet(1);
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}
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public int decrementAndGet() {
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return addAndGet(-1);
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}
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@Override
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public byte byteValue() {
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return (byte)value;
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}
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@Override
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public short shortValue() {
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return (short)value;
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}
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@Override
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public int intValue() {
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return value;
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}
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@Override
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public long longValue() {
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return value;
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}
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@Override
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public float floatValue() {
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return value;
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}
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@Override
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public double doubleValue() {
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return value;
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}
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}
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126
classpath/java/util/concurrent/atomic/AtomicLong.java
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126
classpath/java/util/concurrent/atomic/AtomicLong.java
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@ -0,0 +1,126 @@
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package java.util.concurrent.atomic;
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import java.lang.reflect.Field;
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import sun.misc.Unsafe;
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public class AtomicLong extends Number implements java.io.Serializable {
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private static final long serialVersionUID = 1927816293512124184L;
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private static final Unsafe unsafe = Unsafe.getUnsafe();
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private static final long valueOffset;
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static {
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try {
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Field<?> f = AtomicLong.class.getDeclaredField("value");
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valueOffset = unsafe.objectFieldOffset(f);
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} catch (NoSuchFieldException e) {
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throw new Error(e);
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}
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}
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private volatile long value;
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public AtomicLong() {
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this(0);
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}
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public AtomicLong(long initialValue) {
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this.value = initialValue;
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}
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public long get() {
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return value;
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}
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public void set(long newValue) {
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this.value = newValue;
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}
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public void lazySet(long newValue) {
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unsafe.putOrderedLong(this, valueOffset, newValue);
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}
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public boolean compareAndSet(long expect, long update) {
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return unsafe.compareAndSwapLong(this, valueOffset, expect, update);
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}
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public boolean weakCompareAndSet(long expect, long update) {
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return unsafe.compareAndSwapLong(this, valueOffset, expect, update);
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}
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public long getAndSet(long newValue) {
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while (true) {
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long current = value;
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if (compareAndSet(current, newValue)) {
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return current;
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}
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}
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}
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public long getAndAdd(long delta) {
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while (true) {
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long current = value;
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long next = current + delta;
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if (compareAndSet(current, next)) {
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return current;
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}
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}
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}
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public long getAndIncrement() {
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return getAndAdd(1);
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}
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public long getAndDecrement() {
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return getAndAdd(-1);
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}
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public long addAndGet(long delta) {
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while (true) {
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long current = value;
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long next = current + delta;
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if (compareAndSet(current, next)) {
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return next;
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}
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}
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}
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public long incrementAndGet() {
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return addAndGet(1);
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}
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public long decrementAndGet() {
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return addAndGet(-1);
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}
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@Override
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public byte byteValue() {
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return (byte)value;
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}
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@Override
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public short shortValue() {
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return (short)value;
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}
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@Override
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public int intValue() {
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return (int)value;
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}
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@Override
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public long longValue() {
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return value;
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}
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@Override
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public float floatValue() {
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return value;
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}
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@Override
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public double doubleValue() {
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return value;
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}
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}
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61
classpath/java/util/concurrent/atomic/AtomicReference.java
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61
classpath/java/util/concurrent/atomic/AtomicReference.java
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@ -0,0 +1,61 @@
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package java.util.concurrent.atomic;
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import java.lang.reflect.Field;
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import sun.misc.Unsafe;
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public class AtomicReference<T> implements java.io.Serializable {
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private static final long serialVersionUID = -1848883965231344442L;
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private static final Unsafe unsafe = Unsafe.getUnsafe();
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private static final long valueOffset;
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static {
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try {
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Field<?> f = AtomicReference.class.getDeclaredField("value");
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valueOffset = unsafe.objectFieldOffset(f);
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} catch (NoSuchFieldException e) {
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throw new Error(e);
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}
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}
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private volatile T value;
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public AtomicReference() {
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this(null);
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}
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public AtomicReference(T initialValue) {
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this.value = initialValue;
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}
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public T get() {
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return value;
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}
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public void lazySet(T newValue) {
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unsafe.putOrderedObject(this, valueOffset, newValue);
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}
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public boolean compareAndSet(T expect, T update) {
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return unsafe.compareAndSwapObject(this, valueOffset, expect, update);
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}
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public boolean weakCompareAndSet(T expect, T update) {
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return unsafe.compareAndSwapObject(this, valueOffset, expect, update);
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}
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public final T getAndSet(T newValue) {
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while (true) {
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T current = value;
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if (compareAndSet(current, newValue)) {
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return current;
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}
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}
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}
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@Override
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public String toString() {
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return String.valueOf(value);
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}
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}
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