c - Pthread 中的信号处理

Question

pthreads 的man 页面提到:

 POSIX.1 also requires that threads share a range  of  other  attributes
       (i.e., these attributes are process-wide rather than per-thread):

       ...

       -  signal dispositions

       ...

“信号配置”是什么意思？

Answer 1

I signal disposition 是进程在传递信号时采取的操作。每个信号都有一个配置。有默认值。

来自 signal(7) :

Signal Dispositions    Each signal has a current disposition, which determines how the process    behaves when it is delivered the signal.[Dispositions are:]    Term   Default action is to terminate the process.    Ign    Default action is to ignore the signal.    Core   Default action is to terminate the process and dump core (see core(5)).    Stop   Default action is to stop the process.    Cont   Default action is to continue the process if it is currently stopped.[...]    The signal disposition is a per-process attribute: in a multithreaded    application, the disposition of a particular signal is the same for all    threads.