什么是"模拟阻塞"(在tomcat doc中看到)？

Question

我在官方tomcat配置文档中看到了以下描述(省略了APR连接器描述):

             Java Blocking Connector       Java Nio Blocking Connector
Classname         Http11Protocol                  Http11NioProtocol   
Tomcat Version   3.x 4.x 5.x 6.x                       6.x            
Support Polling         NO                             YES            
Polling Size           N/A                   Unlimited - Restricted by mem
Read HTTP Request     Blocking                     Non Blocking
Read HTTP Body        Blocking                     Sim Blocking
Write HTTP Response   Blocking                     Sim Blocking
SSL Support           Java SSL                     Java SSL
SSL Handshake         Blocking                     Non blocking
Max Connections       maxThreads                   See polling size

"Sim Blocking"是什么意思？

Answer 1

根据Tomcat提交者Filip Hanik的说法,它意味着"模拟阻塞". (参考:Tomcat用户邮件列表帖子)