Blitz4j - 可伸缩的日志框架

public
  void callAppenders(LoggingEvent event) {
    int writes = 0;
   for(Category c = this; c != null; c=c.parent) {
     // Protected against simultaneous call to addAppender, removeAppender,...同步锁
      synchronized(c) {
    if(c.aai != null) {
      writes += c.aai.appendLoopOnAppenders(event);
    }
    if(!c.additive) {
      break;
    }
      }
    }

    if(writes == 0) {
      repository.emitNoAppenderWarning(this);
    }
  }