June 2016 - Pharo-users - lists.pharo.org

Re: [Pharo-users] OSProcess command - non responding image when calling often

by Thierry Goubier

2016-06-07 15:21 GMT+02:00 Peter Uhnak <i.uhnak(a)gmail.com>: > On Tue, Jun 07, 2016 at 01:22:04PM +0200, Thierry Goubier wrote: > > 2016-06-07 11:47 GMT+02:00 Peter Uhnak <i.uhnak(a)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 timeâ¦ but at least > order > > > of magnite less. > > > > > > > Than GitFileTree or OSProcess? Still, you get lockups... which isn't > good. > > No, GitFileTree never locked up my image. This was always my use. > Ok. I did had lockups with GitFileTree... a lot. Rarely now. But I still consider a GitFileTree lockup a possible occurrence. Thierry > > Peter > >

June 7, 2016

Re: [Pharo-users] OSProcess command - non responding image when calling often

by Thierry Goubier

Hi Mariano, 2016-06-07 16:04 GMT+02:00 Mariano Martinez Peck <marianopeck(a)gmail.com>: > Hi guys, > > I will try to answer many things at once: > > 1) Sabine, OSSubprocess works for Unix derived, not only Linux, that > includes OSX as well. > > 2) Tierry,Sabine for the case of loosing signals, the most trustful > solution (in OSSubprocess) is to rely on a delay pooling instead of on the > child reaper (based on signals). I am talking exactly about this API: > https://github.com/marianopeck/OSSubprocess#delay-based-polling-waiting > Which is what GitFileTree uses. I remember asking you for a similar API :) Polling to avoid the child reaper is also what GitFileTree does on the OSProcess side. > > 3) I found a problem/bug with waits and signals in Pharo 5.0 as reported > here: > https://pharo.fogbugz.com/f/cases/18359/Problem-with-DelayExperimentalSpinS…. > That should also affect OSProcess. What I did in OSSubprocess v0.2.4 ( > https://github.com/marianopeck/OSSubprocess/tree/v0.2.4) is automatically > set the mentioned workaround in the issue tracker. This may fix your issue. > I understand that. I had a few lock-ups prior to that with GitFileTree and OSSubprocess, even with the polling interface, and I noticed that discussion (and the fact someone else complained of lost signals when connected to a database as well). But I don't know what the status is exactly for each version of the Pharo VM. Thanks, Thierry > > > Hope any of this helps. Let us know. > > Cheers, > > > > > On Tue, Jun 7, 2016 at 10:21 AM, Peter Uhnak <i.uhnak(a)gmail.com> wrote: > >> On Tue, Jun 07, 2016 at 01:22:04PM +0200, Thierry Goubier wrote: >> > 2016-06-07 11:47 GMT+02:00 Peter Uhnak <i.uhnak(a)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 timeâ¦ but at least >> order >> > > of magnite less. >> > > >> > >> > Than GitFileTree or OSProcess? Still, you get lockups... which isn't >> good. >> >> No, GitFileTree never locked up my image. This was always my use. >> >> Peter >> >> > > > -- > Mariano > http://marianopeck.wordpress.com >

June 7, 2016

Re: [Pharo-users] OSProcess command - non responding image when calling often

by Mariano Martinez Peck

Hi guys, I will try to answer many things at once: 1) Sabine, OSSubprocess works for Unix derived, not only Linux, that includes OSX as well. 2) Tierry,Sabine for the case of loosing signals, the most trustful solution (in OSSubprocess) is to rely on a delay pooling instead of on the child reaper (based on signals). I am talking exactly about this API: https://github.com/marianopeck/OSSubprocess#delay-based-polling-waiting 3) I found a problem/bug with waits and signals in Pharo 5.0 as reported here: https://pharo.fogbugz.com/f/cases/18359/Problem-with-DelayExperimentalSpinS…. That should also affect OSProcess. What I did in OSSubprocess v0.2.4 ( https://github.com/marianopeck/OSSubprocess/tree/v0.2.4) is automatically set the mentioned workaround in the issue tracker. This may fix your issue. Hope any of this helps. Let us know. Cheers, On Tue, Jun 7, 2016 at 10:21 AM, Peter Uhnak <i.uhnak(a)gmail.com> wrote: > On Tue, Jun 07, 2016 at 01:22:04PM +0200, Thierry Goubier wrote: > > 2016-06-07 11:47 GMT+02:00 Peter Uhnak <i.uhnak(a)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 timeâ¦ but at least > order > > > of magnite less. > > > > > > > Than GitFileTree or OSProcess? Still, you get lockups... which isn't > good. > > No, GitFileTree never locked up my image. This was always my use. > > Peter > > -- Mariano http://marianopeck.wordpress.com

June 7, 2016

Re: [Pharo-users] OSProcess command - non responding image when calling often

by Sabine Manaa

Hi Thierry, Peter and Mariano, thank you for your feedback. I have to look at your suggestions and come back then. It is always great to get so immediate answers! Regards Sabine -- View this message in context: http://forum.world.st/OSProcess-command-non-responding-image-when-calling-o… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

June 7, 2016

Re: [Pharo-users] OSProcess command - non responding image when calling often

by Peter Uhnak

On Tue, Jun 07, 2016 at 01:22:04PM +0200, Thierry Goubier wrote: > 2016-06-07 11:47 GMT+02:00 Peter Uhnak <i.uhnak(a)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 timeâ¦ but at least order > > of magnite less. > > > > Than GitFileTree or OSProcess? Still, you get lockups... which isn't good. No, GitFileTree never locked up my image. This was always my use. Peter

June 7, 2016

Re: [Pharo-users] OSProcess command - non responding image when calling often

by Thierry Goubier

2016-06-07 11:47 GMT+02:00 Peter Uhnak <i.uhnak(a)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 timeâ¦ 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+s1294792n4899548h83(a)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-o… > > >> 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-o… > > > To start a new topic under Pharo Smalltalk Users, email > > > ml-node+s1294792n1310670h65(a)n4.nabble.com > > > To unsubscribe from Pharo Smalltalk Users, click here > > > < > http://forum.world.st/template/NamlServlet.jtp?macro=unsubscribe_by_code&no… > > > > > . > > > NAML > > > < > http://forum.world.st/template/NamlServlet.jtp?macro=macro_viewer&id=instan… > > > > > > > > > > > > > > > -- > > View this message in context: > http://forum.world.st/OSProcess-command-non-responding-image-when-calling-o… > > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. > >

June 7, 2016

Re: [Pharo-users] OSProcess command - non responding image when calling often

by Thierry Goubier

2016-06-07 10:44 GMT+02:00 Sabine Manaa <manaa.sabine(a)gmail.com>: > Hi Thierry, hi Pharo Team, > > Thierry, thank you! I switched to Pharo5 a few days ago. I am not yet > productive/online. I had a look at your code in a Pharo 3 image. It is the > code after >>runGitCommand:in:, right? > Yes. I'm not sure I backported in Pharo3 all the changes there. I know I did spend a lot of time at one point fighting with random lock-ups (apparently triggered more frequently by an upgrade on the underlying linux...) > Puh, I don't want to go so deep and implement that again for a small > feature like my png previews.... > It's only one method, to be honest. Sometimes, you want just something that works... and do whatever is necessary. > > 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. > I'm sure there is. The thing is, if the bug is somewhere deep, then it may takes time to wait for it. This is a luxury I often don't have, and, given the low cost of the alternative implementation, then I just do it. > > 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. > ProcessWrapper works perfectly fine, as far as I was told. Took a while to get it right for GitFileTree, so maybe it is some code to look at (MCFileTreeGitRepository class>>#runProcessWrapperGitCommand:in:) 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). > Just consider that we need that feature now, we have code for that, and that it works now while waiting for a better solution :) Regards, Thierry > > Regards > Sabine > > > > > 2016-06-07 9:43 GMT+02:00 Thierry Goubier [via Smalltalk] <[hidden email] > <http:///user/SendEmail.jtp?type=node&node=4899580&i=0>>: > >> 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-o… >>> 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-o… >> To start a new topic under Pharo Smalltalk Users, email [hidden email] >> <http:///user/SendEmail.jtp?type=node&node=4899580&i=1> >> To unsubscribe from Pharo Smalltalk Users, click here. >> NAML >> <http://forum.world.st/template/NamlServlet.jtp?macro=macro_viewer&id=instan…> >> > > > ------------------------------ > View this message in context: Re: OSProcess command - non responding > image when calling often > <http://forum.world.st/OSProcess-command-non-responding-image-when-calling-o…> > > Sent from the Pharo Smalltalk Users mailing list archive > <http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html> at Nabble.com. >

June 7, 2016

Re: [Pharo-users] OSProcess command - non responding image when calling often

by Peter Uhnak

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. > 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 timeâ¦ but at least order of magnite less. 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+s1294792n4899548h83(a)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-o… > >> 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-o… > > To start a new topic under Pharo Smalltalk Users, email > > ml-node+s1294792n1310670h65(a)n4.nabble.com > > To unsubscribe from Pharo Smalltalk Users, click here > > <http://forum.world.st/template/NamlServlet.jtp?macro=unsubscribe_by_code&no…> > > . > > NAML > > <http://forum.world.st/template/NamlServlet.jtp?macro=macro_viewer&id=instan…> > > > > > > > -- > View this message in context: http://forum.world.st/OSProcess-command-non-responding-image-when-calling-o… > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

June 7, 2016

Re: [Pharo-users] GUI Applications

by Pavel Krivanek

You may be interested in Phobos: https://github.com/pavel-krivanek/phobos-framework -- Pavel 2016-06-06 20:56 GMT+02:00 sergio ruiz <sergio.rrd(a)gmail.com>: > It would seem to me that in order for an ecosystem to really take hold on > the part of the users, itâs really important that itâs efficient and easy > to create a GUI based application. > > Can anyone comment on the current state of libraries for creating and > distributing GUI applications? > > Thanks! > > ---- > peace, > sergio > photographer, journalist, visionary > #BitMessage BM-NBaswViL21xqgg9STRJjaJaUoyiNe2dV > http://www.Village-Buzz.com > http://www.ThoseOptimizeGuys.com > http://www.coffee-black.com > http://www.painlessfrugality.com > http://www.twitter.com/sergio_101 > http://www.facebook.com/sergio101 > > >

June 7, 2016

Re: [Pharo-users] OSProcess command - non responding image when calling often

by Sabine Manaa

Hi Thierry, hi Pharo Team, Thierry, thank you! I switched to Pharo5 a few days ago. I am not yet productive/online. I had a look at your code in a Pharo 3 image. It is the code after >>runGitCommand:in:, right? Puh, I don't want to go so deep and implement that again for a small feature like my png previews.... 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. 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+s1294792n4899548h83(a)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-o… >> 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-o… > To start a new topic under Pharo Smalltalk Users, email > ml-node+s1294792n1310670h65(a)n4.nabble.com > To unsubscribe from Pharo Smalltalk Users, click here > <http://forum.world.st/template/NamlServlet.jtp?macro=unsubscribe_by_code&no…> > . > NAML > <http://forum.world.st/template/NamlServlet.jtp?macro=macro_viewer&id=instan…> > -- View this message in context: http://forum.world.st/OSProcess-command-non-responding-image-when-calling-o… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

June 7, 2016