From: Jeremy Evans <code@jeremyevans.net> To: Eric Wong <e@80x24.org> Cc: unicorn-public@bogomips.org Subject: Re: Patch: Add after_worker_exit configuration option Date: Tue, 21 Feb 2017 12:02:16 -0800 Message-ID: <20170221200216.GJ93742@jeremyevans.local> (raw) In-Reply-To: <20170221194320.GA26617@whir> On 02/21 07:43, Eric Wong wrote: > Jeremy Evans <code@jeremyevans.net> wrote: > > This option can be used to implement custom behavior for handling > > worker exits. For example, let's say you have a specific request > > that crashes a worker process, which you expect to be due to a > > improperly programmed C extension. By modifying your worker to > > save request related data in a temporary file and using this option, > > you can get a record of what request is crashing the application, > > which will make debugging easier. > > > > This is not a complete patch as it doesn't include tests, but > > before writing tests I wanted to see if this is something you'd > > consider including in unicorn. > > What advantage does this have over Ruby's builtin at_exit? at_exit is not called if the interpreter crashes: ruby -e 'at_exit{File.write('a.txt', 'a')}; Process.kill :SEGV, $$' 2>/dev/null ([ -f a.txt ] && echo at_exit called) || echo at_exit not called > > AFAIK, at_exit may be registered inside after_fork hooks to the > same effect. > > Thanks.
next prev parent reply index Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top 2017-02-21 19:19 Jeremy Evans 2017-02-21 19:43 ` Eric Wong 2017-02-21 20:02 ` Jeremy Evans [this message] 2017-02-21 20:15 ` Eric Wong 2017-02-21 20:49 ` Jeremy Evans 2017-02-21 21:38 ` Eric Wong
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