在https://github.com/giorgiosironi/erlang-2pc/blob/master/nodes.erl#L95中,我产生了3个进程,这些进程在算法结束后终止(或者我认为:它们的函数返回)。 我认为start / 0函数也已终止。
我开始执行此功能:
erl -noshell -run nodes test_commit -noshell
执行该函数后,我获得了预期的输出:
<0.30.0> - As coordinator added cohort: <0.31.0>
<0.31.0> - Will propose: yes
<0.32.0> - Will propose: yes
<0.30.0> - As coordinator added cohort: <0.32.0>
<0.30.0> - As coordinator, 1st phase trying to commit
<0.31.0> - Queried by coordinator
<0.32.0> - Queried by coordinator
<0.30.0> - As coordinator received a yes
<0.30.0> - As coordinator received a yes
<0.30.0> - As coordinator, 2nd phase
<0.31.0> - COMMIT!
<0.32.0> - COMMIT!
<0.30.0> - COMMIT!
然后shell无限期挂起。我用CTRL + C然后退出(A)bort。
为什么shell不会自行终止?如何在这种挂起的状态下检查shell中哪些进程仍然存活?如果这是正常的,我如何从我的测试脚本中以编程方式终止它?
答案 0 :(得分:5)
一旦完成运行函数,您需要告诉运行时停止。一种方法是使用init:stop/0
函数:
erl -noinput -run nodes test_commit -s init stop
请注意,-noinput
选项还隐含-noshell
。