Do not start two instances of this process

[Alejandro J. Cura]

On windows we should check if there's a running instance of this process, and not start in that case.

[Javier Ampudia (ampudia1987)]

Me pueden sacar de esta lista gracias
------Mensaje original------
De: Launchpad Bug Tracker
Remitente: <email address hidden>
Para: <email address hidden>
Responder a: Bug 803672
Asunto: [Bug 803672] Re: Do not start two instances of this process
Enviado: 22 de jul de 2011 17:31

** Branch linked: lp:~alecu/ubuntu-sso-client/user-id-tcp-port

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https://bugs.launchpad.net/bugs/803672

Title:
  Do not start two instances of this process

Status in Ubuntu Single Sign On Client:
  Triaged
Status in Ubuntu One Client:
  Triaged
Status in “ubuntuone-client” package in Ubuntu:
  Invalid

Bug description:
  On windows we should check if there's a running instance of this
  process, and not start in that case.

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Sent from my BlackBerry® wireless device

[Roberto Alsina (ralsina)]

If you start syncdaemon once in a terminal, and then in another, the second instance, instead of dying, does this (many times, from different places, always the same exception):

Logged from file states.py, line 378
Traceback (most recent call last):
  File "C:\Python27\lib\logging\handlers.py", line 77, in emit
    if self.shouldRollover(record):
  File "C:\Users\ROBERTO\canonical\ubuntuone-client\ubuntuone\logger.py", line 101, in shouldRollover
    self.stream.seek(0, 2) #due to non-posix-compliant Windows feature
ValueError: I/O operation on closed file
Logged from file states.py, line 448
Traceback (most recent call last):
  File "C:\Python27\lib\logging\handlers.py", line 77, in emit
    if self.shouldRollover(record):
  File "C:\Users\ROBERTO\canonical\ubuntuone-client\ubuntuone\logger.py", line 101, in shouldRollover
    self.stream.seek(0, 2) #due to non-posix-compliant Windows feature
ValueError: I/O operation on closed file
Logged from file main.py, line 271
Traceback (most recent call last):
  File "C:\Python27\lib\logging\handlers.py", line 77, in emit
    if self.shouldRollover(record):
  File "C:\Users\ROBERTO\canonical\ubuntuone-client\ubuntuone\logger.py", line 101, in shouldRollover
    self.stream.seek(0, 2) #due to non-posix-compliant Windows feature
ValueError: I/O operation on closed file