Yes, I think that's correct.  It would be possible to have two different
versions running with two different profiles.  I think that's OK since
you're running two different profiles already.

On Thu, 5 Feb 2009, Rahul Kuchhal wrote:

> Since I don't know how zygote works I will just throw it out there - what
> will happen if Chrome gets updated while it is already running and user
> tries to launch another instance of Chrome browser (from a shortcut or from
> command line)? I am guessing if its the same profile the new chrome will
> exit after sending a msg to already running browser instance. But if it is a
> different profile we can potentially have two different version running with
> two different profiles?
> 
> On Thu, Feb 5, 2009 at 10:35 AM, <[email protected]> wrote:
> 
> > I think the current plan is to have a zygote used to spawn sub processes
> > in which case it should be safe to change the chrome executable while it
> > is running.  The running chrome process won't depend on disk for anything
> > (all data files are mmapped at process start up).
> >
> > On Thu, 5 Feb 2009, cpu wrote:
> >
> > >
> > > Are there any implications for sandboxing on the fork vs exec ? I
> > > don't want us to paint ourselves in a corner when we implement the
> > > sandbox.
> > >
> > >
> > > On Feb 5, 9:57 am, Rahul Kuchhal <[email protected]> wrote:
> > > > If file structure on Linux is anywhere like Windows than the shared
> > library
> > > > (chrome.dll on Windows) would be versioned (the dll is kept inside a
> > version
> > > > directory on Windows) but the executable itself (chrome.exe) will
> > always
> > > > live at the same place.
> > > > On Linux are we going to allow Chrome updates to happen while Chrome is
> > > > running? In this is what we are aiming for forking sounds great since
> > we
> > > > will end up using the same exe version and this should work as long as
> > we
> > > > know which shared library we are using with it.
> > > >
> > > > On Thu, Feb 5, 2009 at 9:33 AM, Dan Kegel <[email protected]>
> > wrote:
> > > >
> > > > > Firefox behaves terribly upon update on Linux because
> > > > > they didn't bother even trying to make distro updates
> > > > > work well, and everybody uses distro packages for Firefox.
> > > > > Let's avoid this same problem on Chrome for Linux.
> > > > > Does that sound like a reasonable goal?  We're
> > > > > early enough in the port that it might not be too
> > > > > hard to bake that feature in.
> > > >
> > > > > What would it take to survive all our files changing
> > > > > out from under us?  I imagine it would suffice to:
> > > >
> > > > > 1) open all the files we're going to need early,
> > > > > and keep the handles around for when we need them
> > > >
> > > > > 2) for our own executables, don't exec, only fork.
> > > > > That would mean using a zygote, i.e. at startup time,
> > > > > fork before creating any threads, and have the initial
> > > > > instance just be a factory for anybody who needs another
> > > > > instance of that executable.
> > > >
> > > > > Is that practical, and did I miss anything?
> > > > > - Dan
> > > >
> > > >
> >
> 

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