Re: trunk r116499: Improve dbus error handling; detect bus failure

[Michael Albinus <michael.albinus@gmx.de>]

Daniel Colascione <dancol@dancol.org> writes:

> On 02/24/2014 03:45 AM, Peter Münster wrote:
>> Perhaps related to the latest dbus-changes:
>>
>> With latest emacs-trunk (r116544), emacs hangs often for about 20s after
>> calling `notifications-notify'. After the hang, this message appears:
>> `dbus-error: "call timed out"'
>>
>> No problem with r116286.
>
> It works for me. Do you have a repro?

I could reproduce it occasionally, not 100%. Run "emacs -Q". Eval:

(require 'dbus)
(setq dbus-debug t)
(dbus-register-method :session "a.b" "/a/b" "a.b" "c" 'ignore)

It times out after 25". The backtrace is

--8<---------------cut here---------------start------------->8---
Debugger entered--Lisp error: (dbus-error "call timed out")
  signal(dbus-error ("call timed out"))
  byte-code(...)
  dbus-list-names(:session)
  dbus-register-method(:session "a.b" "/a/b" "a.b" "c" ignore)
  eval((dbus-register-method :session "a.b" "/a/b" "a.b" "c" (quote ignore)) nil)
  eval-last-sexp-1(nil)
  eval-last-sexp(nil)
  call-interactively(eval-last-sexp nil nil)
  command-execute(eval-last-sexp)
--8<---------------cut here---------------end--------------->8---

*Messages* contains the traces.

Best regards, Michael.