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提交 b8a7c6dc 编写于 作者: C chegar
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8006007: j.u.c.atomic classes should use intrinsic getAndXXX provided by 7023898 

Reviewed-by: dl, shade
上级 5abc5d76
隐藏空白更改
内联 并排
Showing with 204 addition and 242 deletion
src/share/classes/java/util/concurrent/atomic/AtomicBoolean.java
浏览文件 @ b8a7c6dc
......@@ -111,7 +111,7 @@ public class AtomicBoolean implements java.io.Serializable {
*
* @param expect the expected value
* @param update the new value
* @return true if successful.
* @return true if successful
*/
public boolean weakCompareAndSet(boolean expect, boolean update) {
int e = expect ? 1 : 0;
......@@ -146,16 +146,16 @@ public class AtomicBoolean implements java.io.Serializable {
* @return the previous value
*/
public final boolean getAndSet(boolean newValue) {
for (;;) {
boolean current = get();
if (compareAndSet(current, newValue))
return current;
}
boolean prev;
do {
prev = get();
} while (!compareAndSet(prev, newValue));
return prev;
}
/**
* Returns the String representation of the current value.
* @return the String representation of the current value.
* @return the String representation of the current value
*/
public String toString() {
return Boolean.toString(get());
......
src/share/classes/java/util/concurrent/atomic/AtomicInteger.java
浏览文件 @ b8a7c6dc
......@@ -115,11 +115,7 @@ public class AtomicInteger extends Number implements java.io.Serializable {
* @return the previous value
*/
public final int getAndSet(int newValue) {
for (;;) {
int current = get();
if (compareAndSet(current, newValue))
return current;
}
return unsafe.getAndSetInt(this, valueOffset, newValue);
}
/**
......@@ -145,7 +141,7 @@ public class AtomicInteger extends Number implements java.io.Serializable {
*
* @param expect the expected value
* @param update the new value
* @return true if successful.
* @return true if successful
*/
public final boolean weakCompareAndSet(int expect, int update) {
return unsafe.compareAndSwapInt(this, valueOffset, expect, update);
......@@ -157,12 +153,7 @@ public class AtomicInteger extends Number implements java.io.Serializable {
* @return the previous value
*/
public final int getAndIncrement() {
for (;;) {
int current = get();
int next = current + 1;
if (compareAndSet(current, next))
return current;
}
return getAndAdd(1);
}
/**
......@@ -171,12 +162,7 @@ public class AtomicInteger extends Number implements java.io.Serializable {
* @return the previous value
*/
public final int getAndDecrement() {
for (;;) {
int current = get();
int next = current - 1;
if (compareAndSet(current, next))
return current;
}
return getAndAdd(-1);
}
/**
......@@ -186,12 +172,7 @@ public class AtomicInteger extends Number implements java.io.Serializable {
* @return the previous value
*/
public final int getAndAdd(int delta) {
for (;;) {
int current = get();
int next = current + delta;
if (compareAndSet(current, next))
return current;
}
return unsafe.getAndAddInt(this, valueOffset, delta);
}
/**
......@@ -200,12 +181,7 @@ public class AtomicInteger extends Number implements java.io.Serializable {
* @return the updated value
*/
public final int incrementAndGet() {
for (;;) {
int current = get();
int next = current + 1;
if (compareAndSet(current, next))
return next;
}
return getAndAdd(1) + 1;
}
/**
......@@ -214,12 +190,7 @@ public class AtomicInteger extends Number implements java.io.Serializable {
* @return the updated value
*/
public final int decrementAndGet() {
for (;;) {
int current = get();
int next = current - 1;
if (compareAndSet(current, next))
return next;
}
return getAndAdd(-1) - 1;
}
/**
......@@ -229,17 +200,12 @@ public class AtomicInteger extends Number implements java.io.Serializable {
* @return the updated value
*/
public final int addAndGet(int delta) {
for (;;) {
int current = get();
int next = current + delta;
if (compareAndSet(current, next))
return next;
}
return getAndAdd(delta) + delta;
}
/**
* Returns the String representation of the current value.
* @return the String representation of the current value.
* @return the String representation of the current value
*/
public String toString() {
return Integer.toString(get());
......
src/share/classes/java/util/concurrent/atomic/AtomicIntegerArray.java
浏览文件 @ b8a7c6dc
......@@ -145,12 +145,7 @@ public class AtomicIntegerArray implements java.io.Serializable {
* @return the previous value
*/
public final int getAndSet(int i, int newValue) {
long offset = checkedByteOffset(i);
while (true) {
int current = getRaw(offset);
if (compareAndSetRaw(offset, current, newValue))
return current;
}
return unsafe.getAndSetInt(array, checkedByteOffset(i), newValue);
}
/**
......@@ -182,7 +177,7 @@ public class AtomicIntegerArray implements java.io.Serializable {
* @param i the index
* @param expect the expected value
* @param update the new value
* @return true if successful.
* @return true if successful
*/
public final boolean weakCompareAndSet(int i, int expect, int update) {
return compareAndSet(i, expect, update);
......@@ -216,12 +211,7 @@ public class AtomicIntegerArray implements java.io.Serializable {
* @return the previous value
*/
public final int getAndAdd(int i, int delta) {
long offset = checkedByteOffset(i);
while (true) {
int current = getRaw(offset);
if (compareAndSetRaw(offset, current, current + delta))
return current;
}
return unsafe.getAndAddInt(array, checkedByteOffset(i), delta);
}
/**
......@@ -231,7 +221,7 @@ public class AtomicIntegerArray implements java.io.Serializable {
* @return the updated value
*/
public final int incrementAndGet(int i) {
return addAndGet(i, 1);
return getAndAdd(i, 1) + 1;
}
/**
......@@ -241,7 +231,7 @@ public class AtomicIntegerArray implements java.io.Serializable {
* @return the updated value
*/
public final int decrementAndGet(int i) {
return addAndGet(i, -1);
return getAndAdd(i, -1) - 1;
}
/**
......@@ -252,13 +242,7 @@ public class AtomicIntegerArray implements java.io.Serializable {
* @return the updated value
*/
public final int addAndGet(int i, int delta) {
long offset = checkedByteOffset(i);
while (true) {
int current = getRaw(offset);
int next = current + delta;
if (compareAndSetRaw(offset, current, next))
return next;
}
return getAndAdd(i, delta) + delta;
}
/**
......
src/share/classes/java/util/concurrent/atomic/AtomicIntegerFieldUpdater.java
浏览文件 @ b8a7c6dc
......@@ -159,11 +159,11 @@ public abstract class AtomicIntegerFieldUpdater<T> {
* @return the previous value
*/
public int getAndSet(T obj, int newValue) {
for (;;) {
int current = get(obj);
if (compareAndSet(obj, current, newValue))
return current;
}
int prev;
do {
prev = get(obj);
} while (!compareAndSet(obj, prev, newValue));
return prev;
}
/**
......@@ -174,12 +174,12 @@ public abstract class AtomicIntegerFieldUpdater<T> {
* @return the previous value
*/
public int getAndIncrement(T obj) {
for (;;) {
int current = get(obj);
int next = current + 1;
if (compareAndSet(obj, current, next))
return current;
}
int prev, next;
do {
prev = get(obj);
next = prev + 1;
} while (!compareAndSet(obj, prev, next));
return prev;
}
/**
......@@ -190,12 +190,12 @@ public abstract class AtomicIntegerFieldUpdater<T> {
* @return the previous value
*/
public int getAndDecrement(T obj) {
for (;;) {
int current = get(obj);
int next = current - 1;
if (compareAndSet(obj, current, next))
return current;
}
int prev, next;
do {
prev = get(obj);
next = prev - 1;
} while (!compareAndSet(obj, prev, next));
return prev;
}
/**
......@@ -207,12 +207,12 @@ public abstract class AtomicIntegerFieldUpdater<T> {
* @return the previous value
*/
public int getAndAdd(T obj, int delta) {
for (;;) {
int current = get(obj);
int next = current + delta;
if (compareAndSet(obj, current, next))
return current;
}
int prev, next;
do {
prev = get(obj);
next = prev + delta;
} while (!compareAndSet(obj, prev, next));
return prev;
}
/**
......@@ -223,12 +223,12 @@ public abstract class AtomicIntegerFieldUpdater<T> {
* @return the updated value
*/
public int incrementAndGet(T obj) {
for (;;) {
int current = get(obj);
int next = current + 1;
if (compareAndSet(obj, current, next))
return next;
}
int prev, next;
do {
prev = get(obj);
next = prev + 1;
} while (!compareAndSet(obj, prev, next));
return next;
}
/**
......@@ -239,12 +239,12 @@ public abstract class AtomicIntegerFieldUpdater<T> {
* @return the updated value
*/
public int decrementAndGet(T obj) {
for (;;) {
int current = get(obj);
int next = current - 1;
if (compareAndSet(obj, current, next))
return next;
}
int prev, next;
do {
prev = get(obj);
next = prev - 1;
} while (!compareAndSet(obj, prev, next));
return next;
}
/**
......@@ -256,12 +256,12 @@ public abstract class AtomicIntegerFieldUpdater<T> {
* @return the updated value
*/
public int addAndGet(T obj, int delta) {
for (;;) {
int current = get(obj);
int next = current + delta;
if (compareAndSet(obj, current, next))
return next;
}
int prev, next;
do {
prev = get(obj);
next = prev + delta;
} while (!compareAndSet(obj, prev, next));
return next;
}
/**
......@@ -361,6 +361,36 @@ public abstract class AtomicIntegerFieldUpdater<T> {
return unsafe.getIntVolatile(obj, offset);
}
public int getAndSet(T obj, int newValue) {
if (obj == null || obj.getClass() != tclass || cclass != null) fullCheck(obj);
return unsafe.getAndSetInt(obj, offset, newValue);
}
public int getAndIncrement(T obj) {
return getAndAdd(obj, 1);
}
public int getAndDecrement(T obj) {
return getAndAdd(obj, -1);
}
public int getAndAdd(T obj, int delta) {
if (obj == null || obj.getClass() != tclass || cclass != null) fullCheck(obj);
return unsafe.getAndAddInt(obj, offset, delta);
}
public int incrementAndGet(T obj) {
return getAndAdd(obj, 1) + 1;
}
public int decrementAndGet(T obj) {
return getAndAdd(obj, -1) - 1;
}
public int addAndGet(T obj, int delta) {
return getAndAdd(obj, delta) + delta;
}
private void ensureProtectedAccess(T obj) {
if (cclass.isInstance(obj)) {
return;
......
src/share/classes/java/util/concurrent/atomic/AtomicLong.java
浏览文件 @ b8a7c6dc
......@@ -129,11 +129,7 @@ public class AtomicLong extends Number implements java.io.Serializable {
* @return the previous value
*/
public final long getAndSet(long newValue) {
while (true) {
long current = get();
if (compareAndSet(current, newValue))
return current;
}
return unsafe.getAndSetLong(this, valueOffset, newValue);
}
/**
......@@ -159,7 +155,7 @@ public class AtomicLong extends Number implements java.io.Serializable {
*
* @param expect the expected value
* @param update the new value
* @return true if successful.
* @return true if successful
*/
public final boolean weakCompareAndSet(long expect, long update) {
return unsafe.compareAndSwapLong(this, valueOffset, expect, update);
......@@ -171,12 +167,7 @@ public class AtomicLong extends Number implements java.io.Serializable {
* @return the previous value
*/
public final long getAndIncrement() {
while (true) {
long current = get();
long next = current + 1;
if (compareAndSet(current, next))
return current;
}
return getAndAdd(1);
}
/**
......@@ -185,12 +176,7 @@ public class AtomicLong extends Number implements java.io.Serializable {
* @return the previous value
*/
public final long getAndDecrement() {
while (true) {
long current = get();
long next = current - 1;
if (compareAndSet(current, next))
return current;
}
return getAndAdd(-1);
}
/**
......@@ -200,12 +186,7 @@ public class AtomicLong extends Number implements java.io.Serializable {
* @return the previous value
*/
public final long getAndAdd(long delta) {
while (true) {
long current = get();
long next = current + delta;
if (compareAndSet(current, next))
return current;
}
return unsafe.getAndAddLong(this, valueOffset, delta);
}
/**
......@@ -214,12 +195,7 @@ public class AtomicLong extends Number implements java.io.Serializable {
* @return the updated value
*/
public final long incrementAndGet() {
for (;;) {
long current = get();
long next = current + 1;
if (compareAndSet(current, next))
return next;
}
return getAndAdd(1) + 1;
}
/**
......@@ -228,12 +204,7 @@ public class AtomicLong extends Number implements java.io.Serializable {
* @return the updated value
*/
public final long decrementAndGet() {
for (;;) {
long current = get();
long next = current - 1;
if (compareAndSet(current, next))
return next;
}
return getAndAdd(-1) - 1;
}
/**
......@@ -243,17 +214,12 @@ public class AtomicLong extends Number implements java.io.Serializable {
* @return the updated value
*/
public final long addAndGet(long delta) {
for (;;) {
long current = get();
long next = current + delta;
if (compareAndSet(current, next))
return next;
}
return getAndAdd(delta) + delta;
}
/**
* Returns the String representation of the current value.
* @return the String representation of the current value.
* @return the String representation of the current value
*/
public String toString() {
return Long.toString(get());
......
src/share/classes/java/util/concurrent/atomic/AtomicLongArray.java
浏览文件 @ b8a7c6dc
......@@ -144,12 +144,7 @@ public class AtomicLongArray implements java.io.Serializable {
* @return the previous value
*/
public final long getAndSet(int i, long newValue) {
long offset = checkedByteOffset(i);
while (true) {
long current = getRaw(offset);
if (compareAndSetRaw(offset, current, newValue))
return current;
}
return unsafe.getAndSetLong(array, checkedByteOffset(i), newValue);
}
/**
......@@ -181,7 +176,7 @@ public class AtomicLongArray implements java.io.Serializable {
* @param i the index
* @param expect the expected value
* @param update the new value
* @return true if successful.
* @return true if successful
*/
public final boolean weakCompareAndSet(int i, long expect, long update) {
return compareAndSet(i, expect, update);
......@@ -215,12 +210,7 @@ public class AtomicLongArray implements java.io.Serializable {
* @return the previous value
*/
public final long getAndAdd(int i, long delta) {
long offset = checkedByteOffset(i);
while (true) {
long current = getRaw(offset);
if (compareAndSetRaw(offset, current, current + delta))
return current;
}
return unsafe.getAndAddLong(array, checkedByteOffset(i), delta);
}
/**
......@@ -230,7 +220,7 @@ public class AtomicLongArray implements java.io.Serializable {
* @return the updated value
*/
public final long incrementAndGet(int i) {
return addAndGet(i, 1);
return getAndAdd(i, 1) + 1;
}
/**
......@@ -240,7 +230,7 @@ public class AtomicLongArray implements java.io.Serializable {
* @return the updated value
*/
public final long decrementAndGet(int i) {
return addAndGet(i, -1);
return getAndAdd(i, -1) - 1;
}
/**
......@@ -251,13 +241,7 @@ public class AtomicLongArray implements java.io.Serializable {
* @return the updated value
*/
public long addAndGet(int i, long delta) {
long offset = checkedByteOffset(i);
while (true) {
long current = getRaw(offset);
long next = current + delta;
if (compareAndSetRaw(offset, current, next))
return next;
}
return getAndAdd(i, delta) + delta;
}
/**
......
src/share/classes/java/util/concurrent/atomic/AtomicLongFieldUpdater.java
浏览文件 @ b8a7c6dc
......@@ -98,7 +98,7 @@ public abstract class AtomicLongFieldUpdater<T> {
* @param obj An object whose field to conditionally set
* @param expect the expected value
* @param update the new value
* @return true if successful.
* @return true if successful
* @throws ClassCastException if {@code obj} is not an instance
* of the class possessing the field established in the constructor.
*/
......@@ -118,7 +118,7 @@ public abstract class AtomicLongFieldUpdater<T> {
* @param obj An object whose field to conditionally set
* @param expect the expected value
* @param update the new value
* @return true if successful.
* @return true if successful
* @throws ClassCastException if {@code obj} is not an instance
* of the class possessing the field established in the constructor.
*/
......@@ -162,11 +162,11 @@ public abstract class AtomicLongFieldUpdater<T> {
* @return the previous value
*/
public long getAndSet(T obj, long newValue) {
for (;;) {
long current = get(obj);
if (compareAndSet(obj, current, newValue))
return current;
}
long prev;
do {
prev = get(obj);
} while (!compareAndSet(obj, prev, newValue));
return prev;
}
/**
......@@ -177,12 +177,12 @@ public abstract class AtomicLongFieldUpdater<T> {
* @return the previous value
*/
public long getAndIncrement(T obj) {
for (;;) {
long current = get(obj);
long next = current + 1;
if (compareAndSet(obj, current, next))
return current;
}
long prev, next;
do {
prev = get(obj);
next = prev + 1;
} while (!compareAndSet(obj, prev, next));
return prev;
}
/**
......@@ -193,12 +193,12 @@ public abstract class AtomicLongFieldUpdater<T> {
* @return the previous value
*/
public long getAndDecrement(T obj) {
for (;;) {
long current = get(obj);
long next = current - 1;
if (compareAndSet(obj, current, next))
return current;
}
long prev, next;
do {
prev = get(obj);
next = prev - 1;
} while (!compareAndSet(obj, prev, next));
return prev;
}
/**
......@@ -210,12 +210,12 @@ public abstract class AtomicLongFieldUpdater<T> {
* @return the previous value
*/
public long getAndAdd(T obj, long delta) {
for (;;) {
long current = get(obj);
long next = current + delta;
if (compareAndSet(obj, current, next))
return current;
}
long prev, next;
do {
prev = get(obj);
next = prev + delta;
} while (!compareAndSet(obj, prev, next));
return prev;
}
/**
......@@ -226,12 +226,12 @@ public abstract class AtomicLongFieldUpdater<T> {
* @return the updated value
*/
public long incrementAndGet(T obj) {
for (;;) {
long current = get(obj);
long next = current + 1;
if (compareAndSet(obj, current, next))
return next;
}
long prev, next;
do {
prev = get(obj);
next = prev + 1;
} while (!compareAndSet(obj, prev, next));
return next;
}
/**
......@@ -242,12 +242,12 @@ public abstract class AtomicLongFieldUpdater<T> {
* @return the updated value
*/
public long decrementAndGet(T obj) {
for (;;) {
long current = get(obj);
long next = current - 1;
if (compareAndSet(obj, current, next))
return next;
}
long prev, next;
do {
prev = get(obj);
next = prev - 1;
} while (!compareAndSet(obj, prev, next));
return next;
}
/**
......@@ -259,12 +259,12 @@ public abstract class AtomicLongFieldUpdater<T> {
* @return the updated value
*/
public long addAndGet(T obj, long delta) {
for (;;) {
long current = get(obj);
long next = current + delta;
if (compareAndSet(obj, current, next))
return next;
}
long prev, next;
do {
prev = get(obj);
next = prev + delta;
} while (!compareAndSet(obj, prev, next));
return next;
}
private static class CASUpdater<T> extends AtomicLongFieldUpdater<T> {
......@@ -345,6 +345,36 @@ public abstract class AtomicLongFieldUpdater<T> {
return unsafe.getLongVolatile(obj, offset);
}
public long getAndSet(T obj, long newValue) {
if (obj == null || obj.getClass() != tclass || cclass != null) fullCheck(obj);
return unsafe.getAndSetLong(obj, offset, newValue);
}
public long getAndIncrement(T obj) {
return getAndAdd(obj, 1);
}
public long getAndDecrement(T obj) {
return getAndAdd(obj, -1);
}
public long getAndAdd(T obj, long delta) {
if (obj == null || obj.getClass() != tclass || cclass != null) fullCheck(obj);
return unsafe.getAndAddLong(obj, offset, delta);
}
public long incrementAndGet(T obj) {
return getAndAdd(obj, 1) + 1;
}
public long decrementAndGet(T obj) {
return getAndAdd(obj, -1) - 1;
}
public long addAndGet(T obj, long delta) {
return getAndAdd(obj, delta) + delta;
}
private void ensureProtectedAccess(T obj) {
if (cclass.isInstance(obj)) {
return;
......
src/share/classes/java/util/concurrent/atomic/AtomicReference.java
浏览文件 @ b8a7c6dc
......@@ -124,7 +124,7 @@ public class AtomicReference<V> implements java.io.Serializable {
*
* @param expect the expected value
* @param update the new value
* @return true if successful.
* @return true if successful
*/
public final boolean weakCompareAndSet(V expect, V update) {
return unsafe.compareAndSwapObject(this, valueOffset, expect, update);
......@@ -136,17 +136,14 @@ public class AtomicReference<V> implements java.io.Serializable {
* @param newValue the new value
* @return the previous value
*/
@SuppressWarnings("unchecked")
public final V getAndSet(V newValue) {
while (true) {
V x = get();
if (compareAndSet(x, newValue))
return x;
}
return (V)unsafe.getAndSetObject(this, valueOffset, newValue);
}
/**
* Returns the String representation of the current value.
* @return the String representation of the current value.
* @return the String representation of the current value
*/
public String toString() {
return String.valueOf(get());
......
src/share/classes/java/util/concurrent/atomic/AtomicReferenceArray.java
浏览文件 @ b8a7c6dc
......@@ -159,13 +159,9 @@ public class AtomicReferenceArray<E> implements java.io.Serializable {
* @param newValue the new value
* @return the previous value
*/
@SuppressWarnings("unchecked")
public final E getAndSet(int i, E newValue) {
long offset = checkedByteOffset(i);
while (true) {
E current = getRaw(offset);
if (compareAndSetRaw(offset, current, newValue))
return current;
}
return (E)unsafe.getAndSetObject(array, checkedByteOffset(i), newValue);
}
/**
......@@ -197,7 +193,7 @@ public class AtomicReferenceArray<E> implements java.io.Serializable {
* @param i the index
* @param expect the expected value
* @param update the new value
* @return true if successful.
* @return true if successful
*/
public final boolean weakCompareAndSet(int i, E expect, E update) {
return compareAndSet(i, expect, update);
......
src/share/classes/java/util/concurrent/atomic/AtomicReferenceFieldUpdater.java
浏览文件 @ b8a7c6dc
......@@ -116,7 +116,7 @@ public abstract class AtomicReferenceFieldUpdater<T, V> {
* @param obj An object whose field to conditionally set
* @param expect the expected value
* @param update the new value
* @return true if successful.
* @return true if successful
*/
public abstract boolean compareAndSet(T obj, V expect, V update);
......@@ -134,7 +134,7 @@ public abstract class AtomicReferenceFieldUpdater<T, V> {
* @param obj An object whose field to conditionally set
* @param expect the expected value
* @param update the new value
* @return true if successful.
* @return true if successful
*/
public abstract boolean weakCompareAndSet(T obj, V expect, V update);
......@@ -176,11 +176,11 @@ public abstract class AtomicReferenceFieldUpdater<T, V> {
* @return the previous value
*/
public V getAndSet(T obj, V newValue) {
for (;;) {
V current = get(obj);
if (compareAndSet(obj, current, newValue))
return current;
}
V prev;
do {
prev = get(obj);
} while (!compareAndSet(obj, prev, newValue));
return prev;
}
private static final class AtomicReferenceFieldUpdaterImpl<T,V>
......@@ -321,6 +321,15 @@ public abstract class AtomicReferenceFieldUpdater<T, V> {
return (V)unsafe.getObjectVolatile(obj, offset);
}
@SuppressWarnings("unchecked")
public V getAndSet(T obj, V newValue) {
if (obj == null || obj.getClass() != tclass || cclass != null ||
(newValue != null && vclass != null &&
vclass != newValue.getClass()))
updateCheck(obj, newValue);
return (V)unsafe.getAndSetObject(obj, offset, newValue);
}
private void ensureProtectedAccess(T obj) {
if (cclass.isInstance(obj)) {
return;
......
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