worker.isConnected()
当工作进程通过 IPC 管道连接至主进程时,这个方法返回 true
,否则返回 false
。
一个工作进程在创建后会自动连接到它的主进程。
当 'disconnect'
事件被触发时才会断开连接。
This function returns true
if the worker is connected to its master via its
IPC channel, false
otherwise. A worker is connected to its master after it
has been created. It is disconnected after the 'disconnect'
event is emitted.