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Java Source Code / Java Documentation » Apache Harmony Java SE » org package » org.apache.harmony.util.concurrent   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    org.apache.harmony.util.concurrent.Atomics Atomics final public class Atomics (Code) Allows to atomically update the contents of fields for the specific object. The primary purpose of this class is to provide the low-level atomic field access operations useful for implementing the classes from java.util.concurrent.atomic package. See Also:   java.util.concurrent.atomic Method Summary native public static  int arrayBaseOffset(Class arrayClass)      native public static  int arrayIndexScale(Class arrayClass)      native public static  boolean compareAndSetBoolean(Object o, long offset, boolean expected, boolean x)      Atomically sets a boolean field to x if it currently contains the expected value. Parameters:   o - object those boolean field needs to be set Parameters:   field - the field to be set Parameters:   expected - expected field value Parameters:   x - value to set. native public static  boolean compareAndSetBoolean(boolean[] arr, int index, boolean expected, boolean x)      Atomically sets an element within array of booleans to x if it currently contains the expected value. Parameters:   arr - array those boolean element needs to be set Parameters:   index - an index within an array Parameters:   expected - expected field value Parameters:   x - value to set. native public static  boolean compareAndSetInt(Object o, long offset, int expected, int x)      Atomically sets an integer field to x if it currently contains the expected value. Parameters:   o - object those integer field needs to be set Parameters:   field - the field to be set Parameters:   expected - expected field value Parameters:   x - value to set. native public static  boolean compareAndSetInt(int[] arr, int index, int expected, int x)      Atomically sets an element within array of integers to x if it currently contains the expected value. Parameters:   arr - array those integer element needs to be set Parameters:   index - an index within an array Parameters:   expected - expected field value Parameters:   x - value to set. native public static  boolean compareAndSetLong(Object o, long offset, long expected, long x)      Atomically sets a long field to x if it currently contains the expected value. Parameters:   o - object those long field needs to be set Parameters:   field - the field to be set Parameters:   expected - expected field value Parameters:   x - value to set. native public static  boolean compareAndSetLong(long[] arr, int index, long expected, long x)      Atomically sets an element within array of longs to x if it currently contains the expected value. Parameters:   arr - array those long element needs to be set Parameters:   index - an index within an array Parameters:   expected - expected field value Parameters:   x - value to set. native public static  boolean compareAndSetObject(Object o, long offset, Object expected, Object x)      Atomically sets a reference type field to x if it currently contains the expected value. Parameters:   o - object those reference type field needs to be set Parameters:   field - the field to be set Parameters:   expected - expected field value Parameters:   x - value to set. native public static  boolean compareAndSetObject(Object[] arr, int index, Object expected, Object x)      Atomically sets an element within array of objects to x if it currently contains the expected value. Parameters:   arr - array those object element needs to be set Parameters:   index - an index within an array Parameters:   expected - expected field value Parameters:   x - value to set. native public static  long getFieldOffset(Field field)      Returns offset of the given field. native public static  int getIntVolatile(Object obj, long offset)      native public static  long getLongVolatile(Object obj, long offset)      native public static  Object getObjectVolatile(Object obj, long offset)      native public static  void setIntVolatile(Object obj, long offset, int value)      native public static  void setLongVolatile(Object obj, long offset, long value)      native public static  void setObjectVolatile(Object obj, long offset, Object value)      Method Detail arrayBaseOffset native public static int arrayBaseOffset(Class arrayClass)(Code) Returns offset of the first array's element Parameters:   arrayClass - class of the array offset of the array's first element arrayIndexScale native public static int arrayIndexScale(Class arrayClass)(Code) Returns size of the array's element Parameters:   arrayClass - class of the array size of the array's element compareAndSetBoolean native public static boolean compareAndSetBoolean(Object o, long offset, boolean expected, boolean x)(Code) Atomically sets a boolean field to x if it currently contains the expected value. Parameters:   o - object those boolean field needs to be set Parameters:   field - the field to be set Parameters:   expected - expected field value Parameters:   x - value to set. true if the value was set.False return indicates that the actual value was not equal to the expected value. compareAndSetBoolean native public static boolean compareAndSetBoolean(boolean[] arr, int index, boolean expected, boolean x)(Code) Atomically sets an element within array of booleans to x if it currently contains the expected value. Parameters:   arr - array those boolean element needs to be set Parameters:   index - an index within an array Parameters:   expected - expected field value Parameters:   x - value to set. true if the value was set.False return indicates that the actual value was not equal to the expected value. compareAndSetInt native public static boolean compareAndSetInt(Object o, long offset, int expected, int x)(Code) Atomically sets an integer field to x if it currently contains the expected value. Parameters:   o - object those integer field needs to be set Parameters:   field - the field to be set Parameters:   expected - expected field value Parameters:   x - value to set. true if the value was set.False return indicates that the actual value was not equal to the expected value. compareAndSetInt native public static boolean compareAndSetInt(int[] arr, int index, int expected, int x)(Code) Atomically sets an element within array of integers to x if it currently contains the expected value. Parameters:   arr - array those integer element needs to be set Parameters:   index - an index within an array Parameters:   expected - expected field value Parameters:   x - value to set. true if the value was set.False return indicates that the actual value was not equal to the expected value. compareAndSetLong native public static boolean compareAndSetLong(Object o, long offset, long expected, long x)(Code) Atomically sets a long field to x if it currently contains the expected value. Parameters:   o - object those long field needs to be set Parameters:   field - the field to be set Parameters:   expected - expected field value Parameters:   x - value to set. true if the value was set.False return indicates that the actual value was not equal to the expected value. compareAndSetLong native public static boolean compareAndSetLong(long[] arr, int index, long expected, long x)(Code) Atomically sets an element within array of longs to x if it currently contains the expected value. Parameters:   arr - array those long element needs to be set Parameters:   index - an index within an array Parameters:   expected - expected field value Parameters:   x - value to set. true if the value was set.False return indicates that the actual value was not equal to the expected value. compareAndSetObject native public static boolean compareAndSetObject(Object o, long offset, Object expected, Object x)(Code) Atomically sets a reference type field to x if it currently contains the expected value. Parameters:   o - object those reference type field needs to be set Parameters:   field - the field to be set Parameters:   expected - expected field value Parameters:   x - value to set. true if the value was set.False return indicates that the actual value was not equal to the expected value. compareAndSetObject native public static boolean compareAndSetObject(Object[] arr, int index, Object expected, Object x)(Code) Atomically sets an element within array of objects to x if it currently contains the expected value. Parameters:   arr - array those object element needs to be set Parameters:   index - an index within an array Parameters:   expected - expected field value Parameters:   x - value to set. true if the value was set.False return indicates that the actual value was not equal to the expected value. getFieldOffset native public static long getFieldOffset(Field field)(Code) Returns offset of the given field. Parameters:   field - the field for which offset is returned offset of the given field getIntVolatile native public static int getIntVolatile(Object obj, long offset)(Code) getLongVolatile native public static long getLongVolatile(Object obj, long offset)(Code) getObjectVolatile native public static Object getObjectVolatile(Object obj, long offset)(Code) setIntVolatile native public static void setIntVolatile(Object obj, long offset, int value)(Code) setLongVolatile native public static void setLongVolatile(Object obj, long offset, long value)(Code) setObjectVolatile native public static void setObjectVolatile(Object obj, long offset, Object value)(Code) Methods inherited from java.lang.Object native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc) public boolean equals(Object obj)(Code)(Java Doc) protected void finalize() throws Throwable(Code)(Java Doc) final native public Class getClass()(Code)(Java Doc) native public int hashCode()(Code)(Java Doc) final native public void notify()(Code)(Java Doc) final native public void notifyAll()(Code)(Java Doc) public String toString()(Code)(Java Doc) final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc) final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc) final public void wait() throws InterruptedException(Code)(Java Doc)