sun.misc.Unsafe.getAndAddInt()方法的使用及代码示例

x33g5p2x  于2022-01-31 转载在 其他  
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本文整理了Java中sun.misc.Unsafe.getAndAddInt()方法的一些代码示例,展示了Unsafe.getAndAddInt()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台,是从一些精选项目中提取出来的代码,具有较强的参考意义,能在一定程度帮忙到你。Unsafe.getAndAddInt()方法的具体详情如下:
包路径:sun.misc.Unsafe
类名称:Unsafe
方法名:getAndAddInt

Unsafe.getAndAddInt介绍

[英]Atomically adds the given value to the current value of a field or array element within the given object o at the given offset.
[中]以原子方式将给定值添加到给定对象o中给定offset处的字段或数组元素的当前值。

代码示例

代码示例来源:origin: neo4j/neo4j

/**
 * Atomically add the given delta to the int field, and return its previous value.
 * <p>
 * This has the memory visibility semantics of a volatile read followed by a volatile write.
 */
public static int getAndAddInt( Object obj, long offset, int delta )
{
  return unsafe.getAndAddInt( obj, offset, delta );
}

代码示例来源:origin: apache/hbase

@Override
protected int incrementRefCountAndGet() {
 return unsafe.getAndAddInt(this, refCountOffset, 1) + 1;
}

代码示例来源:origin: apache/hbase

@Override
protected int decrementRefCountAndGet() {
 return unsafe.getAndAddInt(this, refCountOffset, -1) - 1;
}

代码示例来源:origin: real-logic/agrona

public int getAndAddInt(final long index, final int delta)
{
  if (SHOULD_BOUNDS_CHECK)
  {
    boundsCheck0(index, SIZE_OF_INT);
  }
  return UNSAFE.getAndAddInt(null, addressOffset + index, delta);
}

代码示例来源:origin: real-logic/agrona

public int getAndAddInt(final int index, final int delta)
{
  if (SHOULD_BOUNDS_CHECK)
  {
    boundsCheck0(index, SIZE_OF_INT);
  }
  return UNSAFE.getAndAddInt(byteArray, addressOffset + index, delta);
}

代码示例来源:origin: ehcache/ehcache3

} finally {
  Thread w;
  if (U.getAndAddInt(this, LOCKSTATE, -READER) ==
    (READER|WAITER) && (w = waiter) != null)
    LockSupport.unpark(w);

代码示例来源:origin: snazy/ohc

static boolean decrement(long address, long offset)
{
  validate(address, offset, 4L);
  long v = unsafe.getAndAddInt(null, address + offset, -1);
  return v == 1;
}

代码示例来源:origin: org.caffinitas.ohc/ohc-core

static void increment(long address, long offset)
{
  validate(address, offset, 4L);
  unsafe.getAndAddInt(null, address + offset, 1);
}

代码示例来源:origin: zeebe-io/zeebe

@Override
public void signal() {
 UNSAFE.getAndAddInt(this, TRIGGER_COUNT_OFFSET, 1);
 task.tryWakeup();
}

代码示例来源:origin: org.agrona/Agrona

public int getAndAddInt(final int index, final int delta)
{
  if (SHOULD_BOUNDS_CHECK)
  {
    boundsCheck0(index, SIZE_OF_INT);
  }
  return UNSAFE.getAndAddInt(byteArray, addressOffset + index, delta);
}

代码示例来源:origin: snazy/ohc

static void increment(long address, long offset)
{
  validate(address, offset, 4L);
  unsafe.getAndAddInt(null, address + offset, 1);
}

代码示例来源:origin: org.agrona/agrona

public int getAndAddInt(final int index, final int delta)
{
  if (SHOULD_BOUNDS_CHECK)
  {
    boundsCheck0(index, SIZE_OF_INT);
  }
  return UNSAFE.getAndAddInt(byteArray, addressOffset + index, delta);
}

代码示例来源:origin: net.openhft/chronicle-core

@Override
  @ForceInline
  public int addInt(@NotNull Object object, long offset, int increment) {
//        assert (offset & 0x3) == 0;
    if (object == null)
      throw new NullPointerException();
    return UNSAFE.getAndAddInt(object, offset, increment) + increment;
  }

代码示例来源:origin: OpenHFT/Chronicle-Core

@Override
  @ForceInline
  public int addInt(long address, int increment) {
//        assert (address & 0x3) == 0;
    return UNSAFE.getAndAddInt(null, address, increment) + increment;
  }

代码示例来源:origin: org.agrona/agrona

public int getAndAddInt(final long index, final int delta)
{
  if (SHOULD_BOUNDS_CHECK)
  {
    boundsCheck0(index, SIZE_OF_INT);
  }
  return UNSAFE.getAndAddInt(null, addressOffset + index, delta);
}

代码示例来源:origin: org.agrona/Agrona

public int getAndAddInt(final long index, final int delta)
{
  if (SHOULD_BOUNDS_CHECK)
  {
    boundsCheck0(index, SIZE_OF_INT);
  }
  return UNSAFE.getAndAddInt(null, addressOffset + index, delta);
}

代码示例来源:origin: io.zeebe/zb-util

@Override
public void signal() {
 UNSAFE.getAndAddInt(this, TRIGGER_COUNT_OFFSET, 1);
 task.tryWakeup();
}

代码示例来源:origin: hank-whu/turbo-rpc

private int insertIndex() {
  int index = unsafe().getAndAddInt(this, SIZE_OFFSET, 1);
  ensureCapacity(index + 1);
  return index;
}

代码示例来源:origin: hank-whu/turbo-rpc

/**
 * 增加并获取该位置的值
 * 
 * @param index
 * @param delta
 * @return
 */
public int addAndGet(int index, int delta) {
  Objects.checkIndex(index, count);
  return unsafe().getAndAddInt(array, offset(index), delta) + delta;
}

代码示例来源:origin: hank-whu/turbo-rpc

/**
 * 递增并获取该位置的值
 * 
 * @param index
 * @return
 */
public int incrementAndGet(int index) {
  Objects.checkIndex(index, count);
  return unsafe().getAndAddInt(array, offset(index), 1) + 1;
}

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