select 详解

标签：RoCE   block   call   list   enabled   can   failed   connect   disable   

In summary, a socket will be identified in a particular set when select returns if:

readfds:
If listen has been called and a connection is pending, accept will succeed.
Data is available for reading (includes OOB data if SO_OOBINLINE is enabled).
Connection has been closed/reset/terminated.

writefds:
If processing a connect call (nonblocking), connection has succeeded.
Data can be sent.

exceptfds:
If processing a connect call (nonblocking), connection attempt failed.
OOB data is available for reading (only if SO_OOBINLINE is disabled).

select 详解

标签：RoCE   block   call   list   enabled   can   failed   connect   disable   

原文地址：https://www.cnblogs.com/mingzhang/p/10635948.html