We need a new stable vm... On Wed, Apr 10, 2019 at 4:16 PM ducasse <steph...@netcourrier.com> wrote:
> Pablo I tried the file you sent and I imported it in the PharoLauncher and > I could not handle file. > I got a File class bad argument and after I could not use iceberg. > > Stef > > > On 10 Apr 2019, at 15:38, teso...@gmail.com wrote: > > > > Hello, > > > > After checking the problem with Guille, we have the hypothesis of the > > source of the problem. > > We have seen that accessing Free Type is not thread-safe. > > Basically, the FTFace holds a structure that is filled up with the > > glyph and its information. As this structure is part of the Font Face > > (a font face is a font plus size and attributes), only one request to > > a glyph can be executed at the time. As we are sharing the same font > > in many places, you will be starting to see the problem. > > > > Also, we have seen that there many accesses to the glyphs outside the > > UI process. > > This problem started to appear as we starting to use Calypso (but it > > is not limited to it), as Calypso uses lazy tabs. The creation of > > these tabs is done outside the UI process. > > > > This is only a hack to test our hypothesis. > > To fix it correctly we will have to rewrite the drawing of the glyphs > > and synchronize the access to the glyph data information. Also, we > > want to do it in a way that does not penalize the processing in the UI > > process. > > > > I have only patched the code that is used by the rendering of morphic, > > other renderings like Athens or any other user using FT should be > > correctly rewritten. > > > > Once we are sure that synchronizing the access to FT fixes the > > problem, we will do a real fix not a dirty hack like this. > > > > I will be testing this new Image to see if there is an improvement. > > > > I will really love you try to use this image and tell me if you still > > find the problem. > > > > There is a PR generating a Pharo8 image (it is called wrong, but... it > > is a Pharo8) > > > > 32 bits > > ===== > > > > > https://ci.inria.fr/pharo-ci-jenkins2/job/Test%20pending%20pull%20request%20and%20branch%20Pipeline/job/PR-3157/2/artifact/bootstrap-cache/Pharo7.0-PR-32bit-f8c6957.zip > > > > 64 bits > > ===== > > > > > https://ci.inria.fr/pharo-ci-jenkins2/job/Test%20pending%20pull%20request%20and%20branch%20Pipeline/job/PR-3157/2/artifact/bootstrap-cache/Pharo7.0-PR-64bit-f8c6957.zip > > > > If somebody is willing to use it in Pharo 7, I can create a PR against > > Pharo7 to generate patched P7 images. > > > > Thanks! > > > > -- > > Pablo Tesone. > > teso...@gmail.com > > > > > > -- Guille Polito Research Engineer Centre de Recherche en Informatique, Signal et Automatique de Lille CRIStAL - UMR 9189 French National Center for Scientific Research - *http://www.cnrs.fr <http://www.cnrs.fr>* *Web:* *http://guillep.github.io* <http://guillep.github.io> *Phone: *+33 06 52 70 66 13
