SizeRollingFileAppender.java 文件源码

/**
This method differentiates RollingFileAppender from its super
class.

@since 0.9.0
*/
@Override
protected void subAppend(
                          LoggingEvent event ) {

    super.subAppend(event);
    if (fileName != null && qw != null) {
        long size = ((CountingQuietWriter) qw).getCount();
        if (size >= maxFileSize && size >= nextRollover) {
            rollOver();
        }
    }
}