Supervisor [program:x] 部分退出代碼

Question

我正在嘗試配置和理解supervisord 程式部分。手冊中提到的一種選擇是exitcodes

exitcodes

The list of “expected” exit codes for this program. 
If the autorestart parameter is set to unexpected, 
and the process exits in any other way than as a 
result of a supervisor stop request, supervisord 
will restart the process if it exits with an exit 
code that is not defined in this list.

Default: 0,2

Required: No.

Introduced: 3.0

在哪裡可以找到每個可用退出代碼的參考？