2016-06-07 11:47 GMT+02:00 Peter Uhnak <i.uh...@gmail.com>: > It's strange that I was using GitFileTree over OSProcess for a long time > without issue and yet every time I tried to use OSProcess directly I had > this locking up. > > Yes. This is a bit worrying; the low-level OSProcess call was a bit of a stopgap while waiting for either OSProcess or the vm to sort the underlying issue (which is more significant than just my use); that it locks up under normal use is not good and should be reported.
I allways considered GitFileTree to be a heavy hitter on OSProcess, running hundreds of external commands to load a complex project, so that if I would lock up, it wouldn't be a normal pattern of use. > > > So I am asking polite to the pharo developers team if there are plans to > > provide a stable solution for calling external programs as described. > > > > My production system will be a windows system, so I need this for > windows, > > too. > > As far as I understand, the new OSSubprocess is (currently) only for > unix. > > Yes, there's ProcessWrapper for Windows. > > An alternative approach might be to use direct FFI calls, e.g. > > MyClass class>>system: > system: command > "Perform OS system() call." > > ^ self ffiCall: #(int system #(char * command)) module: LibC > > And then you can do MyClass system: 'cp a.pdf b.pdf'. > > Although it still locks up my image from time to time… but at least order > of magnite less. > Than GitFileTree or OSProcess? Still, you get lockups... which isn't good. Thierry > > Also if you are targeting Windows, I suggest to look at Torsten's > 'OSWindows' project (available from the catalog browser). > > Peter > > > > > > It is no problem for me to wait some time for this. > > But it would be nice to know what the plans are, to decide what to do > (and > > not programming something which will be solved in future). > > > > Regards > > Sabine > > > > > > > > > > 2016-06-07 9:43 GMT+02:00 Thierry Goubier [via Smalltalk] < > > ml-node+s1294792n4899548...@n4.nabble.com>: > > > > > Hi Sabine, > > > > > > which version of Pharo are you using? I had similar issues, and I > managed > > > to reduce those occurrences to a reasonable level by changing the way I > > > called OSProcess (and a lot of help from Dave). I do have sometime > lockups > > > with OSSubprocess as well, but those are also rare. > > > > > > (I do think this is a bug somewhere in the VM which makes it loose > signals) > > > > > > The code I use is in GitFileTree: a low-level way of calling OSProcess > > > which seems good at minimizing lockups. > > > > > > Thierry > > > > > > > > > > > > 2016-06-07 9:31 GMT+02:00 Sabine Manaa <[hidden email] > > > <http:///user/SendEmail.jtp?type=node&node=4899548&i=0>>: > > > > > >> Hi, > > >> > > >> sorry but I have another issue with OSProcess. > > >> > > >> For my app, I want to show small .png previews from my .pdfs. For this > > >> reason, I use an external software, currently pdfbox. It works fine, > but > > >> regularly, I get a hanging image. I tried to reproduce it and found > out, > > >> that it is not a problem with pdfbox (http://pdfbox.apache.org), > because > > >> from command line, I can call it often without problems. There can be > > >> (hopefully) many users in my app with many previews at one time. So I > have > > >> to call it often. > > >> > > >> For reproduction of the OSProcess issue, I used another simple command > > >> (from > > >> my other OSProcess umlaut issue :-)) to test it. > > >> > > >> calling this, results in a non responding image: > > >> > > >> 20 timesRepeat: [OSProcess command: ('cp > > >> /Library/WebServer/Documents/reports/bar.pdf > > >> /Library/WebServer/Documents/reports/test-c.pdf').]. > > >> > > >> also this: > > >> 20 timesRepeat: [OSProcess command: ('echo "Hi there"').] > > >> > > >> My original code is similar to this but here only for information: > > >> OSProcess > > >> command: > > >> ('{1} -jar {2} PDFToImage -format PNG -page 1 > > >> -dpi 100 {3}' > > >> format: > > >> {'Library/Internet\ > > >> Plug-Ins/JavaAppletPlugin.plugin/Contents/Home/bin/java'. > > >> > > >> '/Users/sabine/Desktop/pdfbox-app-2.0.1.jar'. > > >> > > >> > > >> > '/Library/WebServer/Documents/reports/201411121510-112859865-3378921/20150605_170_IFA_Berlin_Reisekostenabrechnung.pdf'}). > > >> > > >> > > >> So, my question is: is it wrong, calling OSProcess like this? How to > do it > > >> instead? > > >> > > >> I am sorry to ask again and hope that there is a simple solution. > > >> Or is it a bug in OSProcess? > > >> > > >> Regards > > >> Sabine > > >> > > >> > > >> > > >> > > >> -- > > >> View this message in context: > > >> > http://forum.world.st/OSProcess-command-non-responding-image-when-calling-often-tp4899540.html > > >> Sent from the Pharo Smalltalk Users mailing list archive at > Nabble.com. > > >> > > >> > > > > > > > > > ------------------------------ > > > If you reply to this email, your message will be added to the > discussion > > > below: > > > > > > > http://forum.world.st/OSProcess-command-non-responding-image-when-calling-often-tp4899540p4899548.html > > > To start a new topic under Pharo Smalltalk Users, email > > > ml-node+s1294792n1310670...@n4.nabble.com > > > To unsubscribe from Pharo Smalltalk Users, click here > > > < > http://forum.world.st/template/NamlServlet.jtp?macro=unsubscribe_by_code&node=1310670&code=bWFuYWEuc2FiaW5lQGdtYWlsLmNvbXwxMzEwNjcwfC0xOTE3OTcxOTg5 > > > > > . > > > NAML > > > < > http://forum.world.st/template/NamlServlet.jtp?macro=macro_viewer&id=instant_html%21nabble%3Aemail.naml&base=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespace&breadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml > > > > > > > > > > > > > > > -- > > View this message in context: > http://forum.world.st/OSProcess-command-non-responding-image-when-calling-often-tp4899540p4899580.html > > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. > >
