June 2015 - Pharo-users - lists.pharo.org

Bug in Open Workspace from File-Browser?

by volkert

The File Browser has a Context Menu "Workspace with Contents". It opens an Edit Window (String Morph), but not a Workspace ... Is the Menu-Title wrong or the implementation? BW, Volkert

June 3, 2015

Re: [Pharo-users] Detecting image (pharo process) hang?

by David

El Wed, 03 Jun 2015 12:33:16 +0200 Stephan Eggermont <stephan(a)stack.nl> escribiÃ³: > On 03-06-15 12:07, David wrote: > > That could work, but can be time expensive. I already have seaside > > installed (and I am using that) so I may try that. > > > > The only problem I see if that if the image is stalled, it can pass > > more time than desired until it times out the http connection. > > Add a keep-alive server, sending an UDP packet every so often? > > Stephan > > > > I thought on wget -T 1 -t 1 localhost:xxxx, for a blank page, 1 second is already more than enough to wait, so if the return status is != 0, I can know it crashed.

June 3, 2015

Re: [Pharo-users] Pharo Video Tutorial: Package Tags

by Dimitris Chloupis

thanks I dont like the name "tag" its too generic. I would prefer something like "Create new sub-package" On Wed, Jun 3, 2015 at 12:43 PM Ben Coman <btc(a)openinworld.com> wrote: > On Wed, Jun 3, 2015 at 3:34 PM, Dimitris Chloupis <kilon.alios(a)gmail.com> > wrote: > > In this Episode of "Pharo Video Tutorial" we take a look at "Package > tags" > > and how we can use them to organise our classes and packages to make our > > lives easier > > > > > https://www.youtube.com/watch?v=Q2Vwg_0RMVU&list=PLqbtQ7OkSta0ULYAd7Qdxof85… > > Looks good. Thanks kilon. > > but maybe we should to change the dialog title from "Create new > category" to "Create new package tag" ?? > > cheers -ben > >

June 3, 2015

Re: [Pharo-users] Detecting image (pharo process) hang?

by Craig Johnson

On 03-06-15 12:07, David wrote: >> That could work, but can be time expensive. I already have seaside >> installed (and I am using that) so I may try that. >> >> The only problem I see if that if the image is stalled, it can pass >> more time than desired until it times out the http connection. Use threads, one to start the session and set a flag on receiving a response and a second to watch for the flag. If there's no flag after a second, the VM is a gonner. Craig

June 3, 2015

Re: [Pharo-users] Detecting image (pharo process) hang?

by Stephan Eggermont

On 03-06-15 12:07, David wrote: > That could work, but can be time expensive. I already have seaside > installed (and I am using that) so I may try that. > > The only problem I see if that if the image is stalled, it can pass > more time than desired until it times out the http connection. Add a keep-alive server, sending an UDP packet every so often? Stephan

June 3, 2015

Re: [Pharo-users] Pharo Video Tutorial: Package Tags

by Sergio Fedi

Since Tags have a different behaviour than Packages, I think we should. (specially when adding comments, which Packages support and Tags don't) â

June 3, 2015

Protocol selection erratic behaviour

by Sergio Fedi

When creating a method in the debugger, when the select protocol pop up window appears, sometimes it finds the protocol we want (getter) and sometimes it doesn't and we have to type it all and add it as if it was new. Is this something normal and my expectations are off? Or is this a bug?

June 3, 2015

Re: [Pharo-users] Detecting image (pharo process) hang?

by David

El Wed, 3 Jun 2015 11:55:17 +0200 Davorin Rusevljan <davorin.rusevljan(a)gmail.com> escribiÃ³: > On Wed, Jun 3, 2015 at 11:51 AM, David > <stormbyte(a)gmail.com> wrote: > > > I am making a little watchdog (in C++) for spawning forked pharo > > image processes and detecting when they crash (for ex, memory > > exhausted and/or killed) so it can restart the image. > > > > It works, but for now I have only 1 remaining thing: > > > > How can I detect from outside, when pharo process is hanged and not > > responsive? > > > > I am thinking something like sending SIGUSR1 (which should output a > > backtrace) and if nothing is produced, then kill the pid. > > > > The problem is that when I do so, then image is completelly > > unresponsive (all is blank and not responsive to any event, click > > and so). > > > > Is there anything better? > > > > > > > Install minimal http server into image, and query it for basic health > information? > > Davorin Rusevljan > http://www.cloud208.com/ > That could work, but can be time expensive. I already have seaside installed (and I am using that) so I may try that. The only problem I see if that if the image is stalled, it can pass more time than desired until it times out the http connection. But thanks, I will try something like that.

June 3, 2015

Re: [Pharo-users] Detecting image (pharo process) hang?

by Davorin Rusevljan

On Wed, Jun 3, 2015 at 11:51 AM, David <stormbyte(a)gmail.com> wrote: > I am making a little watchdog (in C++) for spawning forked pharo image > processes and detecting when they crash (for ex, memory exhausted > and/or killed) so it can restart the image. > > It works, but for now I have only 1 remaining thing: > > How can I detect from outside, when pharo process is hanged and not > responsive? > > I am thinking something like sending SIGUSR1 (which should output a > backtrace) and if nothing is produced, then kill the pid. > > The problem is that when I do so, then image is completelly > unresponsive (all is blank and not responsive to any event, click and > so). > > Is there anything better? > > > Install minimal http server into image, and query it for basic health information? Davorin Rusevljan http://www.cloud208.com/

June 3, 2015

Detecting image (pharo process) hang?

by David

I am making a little watchdog (in C++) for spawning forked pharo image processes and detecting when they crash (for ex, memory exhausted and/or killed) so it can restart the image. It works, but for now I have only 1 remaining thing: How can I detect from outside, when pharo process is hanged and not responsive? I am thinking something like sending SIGUSR1 (which should output a backtrace) and if nothing is produced, then kill the pid. The problem is that when I do so, then image is completelly unresponsive (all is blank and not responsive to any event, click and so). Is there anything better?

June 3, 2015