Examples of java.util.concurrent.atomic.AtomicLong.compareAndSet()

Class java.util.concurrent.atomic.AtomicLong

Examples of java.util.concurrent.atomic.AtomicLong.compareAndSet()

java.util.concurrent.atomic.AtomicLong.compareAndSet()

          // atomic replaced
          continue outer;
        }


        long newValue = oldValue + delta;
        if (atomic.compareAndSet(oldValue, newValue)) {
          return oldValue;
        }
        // value changed
      }
    }

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          }
          // atomic replaced
          continue outer;
        }


        if (atomic.compareAndSet(oldValue, newValue)) {
          return oldValue;
        }
        // value changed
      }
    }

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      return 0L;
    }


    for (;;) {
      long oldValue = atomic.get();
      if (oldValue == 0L || atomic.compareAndSet(oldValue, 0L)) {
        // only remove after setting to zero, to avoid concurrent updates
        map.remove(key, atomic);
        // succeed even if the remove fails, since the value was already adjusted
        return oldValue;
      }

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  boolean replace(K key, long expectedOldValue, long newValue) {
    if (expectedOldValue == 0L) {
      return putIfAbsent(key, newValue) == 0L;
    } else {
      AtomicLong atomic = map.get(key);
      return (atomic == null) ? false : atomic.compareAndSet(expectedOldValue, newValue);
    }
  }


  /**
   * If {@code (key, value)} is currently in the map, this method removes it and returns

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    long oldValue = atomic.get();
    if (oldValue != value) {
      return false;
    }


    if (oldValue == 0L || atomic.compareAndSet(oldValue, 0L)) {
      // only remove after setting to zero, to avoid concurrent updates
      map.remove(key, atomic);
      // succeed even if the remove fails, since the value was already adjusted
      return true;
    }

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          // atomic replaced
          continue outer;
        }


        long newValue = oldValue + delta;
        if (atomic.compareAndSet(oldValue, newValue)) {
          return newValue;
        }
        // value changed
      }
    }

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          // atomic replaced
          continue outer;
        }


        long newValue = oldValue + delta;
        if (atomic.compareAndSet(oldValue, newValue)) {
          return oldValue;
        }
        // value changed
      }
    }

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          }
          // atomic replaced
          continue outer;
        }


        if (atomic.compareAndSet(oldValue, newValue)) {
          return oldValue;
        }
        // value changed
      }
    }

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      return 0L;
    }


    for (;;) {
      long oldValue = atomic.get();
      if (oldValue == 0L || atomic.compareAndSet(oldValue, 0L)) {
        // only remove after setting to zero, to avoid concurrent updates
        map.remove(key, atomic);
        // succeed even if the remove fails, since the value was already adjusted
        return oldValue;
      }

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  boolean replace(K key, long expectedOldValue, long newValue) {
    if (expectedOldValue == 0L) {
      return putIfAbsent(key, newValue) == 0L;
    } else {
      AtomicLong atomic = map.get(key);
      return (atomic == null) ? false : atomic.compareAndSet(expectedOldValue, newValue);
    }
  }


  /**
   * If {@code (key, value)} is currently in the map, this method removes it and returns

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