无法在Ubuntu 11.04上使用ctrl-c停止WEBrick 1.3.1 [英] Can't stop WEBrick 1.3.1 with ctrl-c on Ubuntu 11.04
问题描述
我正在使用RVM，Ruby 1.9.2和Rails 3.0.7
I'm using RVM, Ruby 1.9.2, and Rails 3.0.7
从另一个终端进行标准的进程终止也不起作用，但是杀死-9当然可以.
A standard kill of the process from another terminal doesn't work, either, but kill -9 does, of course.
我发现了一个类似的问题，对Webbrick服务器的CTRL + C被忽略了，但是目前尚不清楚该问题是否描述了同样的根本问题.另外，该分辨率似乎并不适用，因为我没有在Gemfile中使用:git.
I found a similar question, CTRL+C to Webbrick server ignored, but it's unclear whether that question is describing the same underlying issue. Also, the resolution doesn't seem to apply, since I'm not using :git in my Gemfile.
更新1:(现在已存在，请参阅下面的更新2，了解更多信息)
update 1: (old now... see update 2, below, for the real scoop)
我设法将问题缩小为一个宝石.如果您提供以下测试脚本，您也可以看到该问题(假设您使用的是Ubuntu 11.04 ...在10.04中没有问题)
I managed to narrow the issue down to a single gem. If you source the following test script, you can see the issue, too (assuming you're on Ubuntu 11.04... there was no issue in 10.04)
rm -rf tmpkilltest
rvm 1.9.2
rvm --force gemset delete tmpkilltest
rvm gemset create tmpkilltest
rvm 1.9.2@tmpkilltest
gem install rails -v=3.0.7 --no-rdoc --no-ri
gem install sqlite3 -v=1.3.3 --no-rdoc --no-ri
rails new tmpkilltest
cd tmpkilltest
echo "gem 'barista', '1.0'" >> Gemfile
bundle
rails s
该问题是由Rails与宝石的交互作用引起的，这使我现在相信这个问题实际上 与
The fact that the issue is caused by Rails' interaction with a gem leads me to now believe that this question actually is related to CTRL+C to Webbrick server ignored, though the test case above shows that this one is clearly not caused by using :git for a gem.
更新2:
在更新1 中，我提到我将其范围缩小为一个宝石.当我经历那颗宝石时，我最终发现了 real 罪魁祸首. gem正在进行单个系统调用.我对测试脚本进行了非常小的修改，不再加载咖啡师gem，而是在application.rb的末尾附加了一个系统调用.通过该系统调用，ctrl-c不起作用.删除系统调用，它确实起作用.
In update 1 I mentioned that I narrowed it down to a gem. When I went through that gem, I eventually found the real culprit. The gem was making a single system call. I've made a very minor modification to the test script where I no longer load the barista gem, but rather I simply append a single system call at the end of the application.rb. With that system call, ctrl-c doesn't work. Remove the system call and it does work.
rm -rf tmpkilltest
rvm 1.9.2
rvm --force gemset delete tmpkilltest
rvm gemset create tmpkilltest
rvm 1.9.2@tmpkilltest
gem install rails -v=3.0.7 --no-rdoc --no-ri
gem install sqlite3 -v=1.3.3 --no-rdoc --no-ri
rails new tmpkilltest
cd tmpkilltest
bundle
echo "\`date\`" >> config/application.rb
rails s
这可以解释此问题与对Webbrick服务器忽略的CTRL + C之间的相似之处.我的直觉是他们提到的宝石也可以进行系统调用.
This could explain the seeming similarity between this question and CTRL+C to Webbrick server ignored. My hunch is that the gem they mention also makes a system call.
推荐答案
好的，该问题已为我解决.我最近将其作为Ubuntu标准更新的一部分进行了内核更新，从而解决了该问题.
Ok, the issue has been resolved for me. A recent kernel update, which I applied as part of Ubuntu's standard updates, fixed the problem.
此外，这里是对该问题的很好的讨论，它解释了根本原因是2.6.38(
Also, here is a good discussion of the issue, which explains that the root cause was a kernel regression introduced in 2.6.38 ( http://redmine.ruby-lang.org/issues/4777 )
该回归已得到修补，看起来该修补程序最近已将其纳入Ubuntu的更新中，因此，如果您受到此问题的影响，则应应用最新更新.
The regression was patched, and it looks like the patch recently made it into Ubuntu's updates, so if you're being affected by this issue, you should apply the latest updates.
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