我有一个ruby脚本,可以执行一些perforce操作(通过脚本API)然后只是结束:
def foo()
...
end
def bar()
...
end
foo()
bar()
puts __LINE__
exit 0
#end of file
...当 LINE 打印出来时,进程永远不会结束,退出(0)是否存在。这是ruby 1.8.6,主要在Mac上,但我也在PC上看到了这一点。
我正在做通常的谷歌搜索,但希望可能有一个经验的声音在这里继续。感谢。
答案 0 :(得分:1)
我对perforce一点也不熟悉,但罪魁祸首可能是at_exit
方法因某种原因而陷入循环。使用irb
观察行为,例如:
$ irb
irb(main):001:0> require 'time'
=> true
irb(main):002:0> at_exit { puts Time.now; sleep 10; puts Time.now }
=> #<Proc:0xb7656f64@(irb):2>
irb(main):003:0> exit
Fri Mar 12 19:46:25 -0500 2010
Fri Mar 12 19:46:35 -0500 2010
要确认at_exit
函数是否导致进程挂起,您可以尝试挂钩at_exit
。请注意,#{caller}
将显示名为at_exit
的人员的堆栈跟踪:
def at_exit &block
@at_exit_counter ||= 0
puts "at_exit #{@at_exit_counter} called"
s = "Calling at_exit ##{@at_exit_counter} from #{caller}"
super { puts s; block.call() }
@at_exit_counter += 1
end
at_exit { puts "I'll never return"; sleep 1 while true; }
at_exit { puts 'I am about to leave.' }
def do_cleanup
puts "Cleaning..."
at_exit { puts 'Cleaning up before exit...' }
end
do_cleanup
输出:
at_exit 0 called at_exit 1 called Cleaning... at_exit 2 called Calling at_exit #2 from exitcheck.rb:14:in `do_cleanup'exitcheck.rb:18 Cleaning up before exit... Calling at_exit #1 from exitcheck.rb:10 I am about to leave. Calling at_exit #0 from exitcheck.rb:9 I'll never return
永远不会回来。