示例#1
0
文件: Gen.java 项目: dtzWill/vmkit
  /**
   * Return the expected reference count. For non-reference counting collectors this becomes a
   * true/false relationship.
   *
   * @param object The object to check.
   * @param sanityRootRC The number of root references to the object.
   * @return The expected (root excluded) reference count.
   */
  public int sanityExpectedRC(ObjectReference object, int sanityRootRC) {
    Space space = Space.getSpaceForObject(object);

    // Nursery
    if (space == Gen.nurserySpace) {
      return SanityChecker.DEAD;
    }

    // Immortal spaces
    if (space == Gen.immortalSpace || space == Gen.vmSpace) {
      return space.isReachable(object) ? SanityChecker.ALIVE : SanityChecker.DEAD;
    }

    // Mature space (nursery collection)
    if (VM.activePlan.global().isCurrentGCNursery()) {
      return SanityChecker.UNSURE;
    }

    // Mature space (full heap collection)
    return space.isReachable(object) ? SanityChecker.ALIVE : SanityChecker.DEAD;
  }
示例#2
0
 /**
  * Return the expected reference count. For non-reference counting collectors this becomes a
  * true/false relationship.
  *
  * @param object The object to check.
  * @param sanityRootRC The number of root references to the object.
  * @return The expected (root excluded) reference count.
  */
 public int sanityExpectedRC(ObjectReference object, int sanityRootRC) {
   Space space = Space.getSpaceForObject(object);
   return space.isReachable(object) ? SanityChecker.ALIVE : SanityChecker.DEAD;
 }