reloading ffi library
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Hi, noob question: i installed bloc and tried to run examples. It worked well on Fedora 27 but not on latest Debian 64 bits because the path of libcairo.so.2 was wrong. So i fixed it in the code, but when trying the bloc examples again the lib path is still wrong (in the debugger).
Is there a way to reload the cairo lib or to reset it, so that the path would be right and it would find the lib ?
Steven. |
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you need to reset FFI:
FFIMethodRegistry resetAll. Esteban
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I've also been frustrated by this, particularly as a supa-fresh-FFI-noob before I understood what was happening. I've found it a minor annoyance but sufficient to to close and reopen an image to reset things, but being able to do it live in-Image is really nice. On 7 December 2017 at 23:41, Esteban Lorenzano <[hidden email]> wrote:
That is really nice to know, but by the time I need it I will probably have forgotten it, and closing/reopening the Image will be faster than searching forum.world.st or asking again the mail list. Could we possibly have World > Tools > Reset FFI ? cheers -ben |
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On 8 December 2017 at 00:43, Ben Coman <[hidden email]> wrote:
>> >> >> On 7 Dec 2017, at 16:04, Steven Costiou <[hidden email]> wrote: >> >> Hi, >> >> noob question: i installed bloc and tried to run examples. >> >> It worked well on Fedora 27 but not on latest Debian 64 bits because the path of libcairo.so.2 was wrong. >> >> So i fixed it in the code, but when trying the bloc examples again the lib path is still wrong (in the debugger). >> >> >> >> Is there a way to reload the cairo lib or to reset it, so that the path would be right and it would find the lib ? > > I've also been frustrated by this, particularly as a supa-fresh-FFI-noob before I understood what was happening. > I've found it a minor annoyance but sufficient to to close and reopen an image to reset things, > but being able to do it live in-Image is really nice. > > On 7 December 2017 at 23:41, Esteban Lorenzano <[hidden email]> wrote: >> >> you need to reset FFI: >> >> FFIMethodRegistry resetAll. > > > That is really nice to know, but by the time I need it I will probably have forgotten it, > and closing/reopening the Image will be faster than searching forum.world.st or asking again the mail list. > Could we possibly have World > Tools > Reset FFI ? > > cheers -ben Added https://pharo.fogbugz.com/f/cases/20835/Add-World-Tools-Reset-FFI I should have a go at doing it, but I'm not sure which class is preferred to hang the menu pragma on, and also I'm still lagging for contributing to Pharo 7 (not really any technical issue now, but lack of time to practice the workflow) cheers -ben |
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In reply to this post by EstebanLM
Thanks :) Will try it :)
Le 2017-12-07 16:41, Esteban Lorenzano a écrit : you need to reset FFI:
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In reply to this post by Ben Coman
Thanks Ben.
I have a question. Would it make sense to have a setting to reset on each session the registry? What you should know is that Guille is actively improving (refactoring, rethinking the API of iceberg) to produce a better UI then. We are really concerned how we can get the same confort than we got before. We do not send all the exchanges we have on the topics Stef On Thu, Dec 7, 2017 at 5:52 PM, Ben Coman <[hidden email]> wrote: > On 8 December 2017 at 00:43, Ben Coman <[hidden email]> wrote: >>> >>> >>> On 7 Dec 2017, at 16:04, Steven Costiou <[hidden email]> wrote: >>> >>> Hi, >>> >>> noob question: i installed bloc and tried to run examples. >>> >>> It worked well on Fedora 27 but not on latest Debian 64 bits because the path of libcairo.so.2 was wrong. >>> >>> So i fixed it in the code, but when trying the bloc examples again the lib path is still wrong (in the debugger). >>> >>> >>> >>> Is there a way to reload the cairo lib or to reset it, so that the path would be right and it would find the lib ? >> >> I've also been frustrated by this, particularly as a supa-fresh-FFI-noob before I understood what was happening. >> I've found it a minor annoyance but sufficient to to close and reopen an image to reset things, >> but being able to do it live in-Image is really nice. >> >> On 7 December 2017 at 23:41, Esteban Lorenzano <[hidden email]> wrote: >>> >>> you need to reset FFI: >>> >>> FFIMethodRegistry resetAll. >> >> >> That is really nice to know, but by the time I need it I will probably have forgotten it, >> and closing/reopening the Image will be faster than searching forum.world.st or asking again the mail list. >> Could we possibly have World > Tools > Reset FFI ? >> >> cheers -ben > > Added https://pharo.fogbugz.com/f/cases/20835/Add-World-Tools-Reset-FFI > I should have a go at doing it, but I'm not sure which class is > preferred to hang the menu pragma on, > and also I'm still lagging for contributing to Pharo 7 (not really any > technical issue now, but lack of time to practice the workflow) > > cheers -ben > |
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On 8 December 2017 at 03:40, Stephane Ducasse <[hidden email]> wrote: Thanks Ben. Naively I'd presume it must always do this to cover: * the OS upgrading libraries * moving images between OS platforms and dropping the old platform's FFI in memory * moving images between flavours of Linux where libraries are in different locations * moving images between 64bit & 32bit VMs (or wait! I forget if thats possible?) What are the use cases where you would *not* reset the FFI registry each session? What you should know is that Guille is actively improving We do not send all the exchanges we have on the topics Understood. Email is a broad but narrow channel. Although if you use a whiteboard to brainstorm, a quick phone photo & summary notes to the mail list is a good way to ensure all participants are aligned as well as keep the community informed. cheers -ben
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In reply to this post by Ben Coman
probably what we need to do is to include cairo library into our distribution as we do with others. this will minimise the problem from one side, but it will enlarge it in other (some distros disallow/discourage the inclusion of 3rd party libraries with your binary) Esteban
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