Re: [fpc-devel] LocalReferenceFixup
On Tuesday, 5. October 2010 17.24:09 José Mejuto wrote: Hello FPC, Tuesday, October 5, 2010, 4:08:08 PM, you wrote: As you can see the Loaded event is called (marked with some //-) before calling GlobalFixupReferences, MS Not if GlobalLoaded is set. Yes, but it is not set, because BeginGlobalLoading is not called at all from any point in the code, nor in fpc/rtl nor in Lazarus lcl, nor in Lazarus IDE, but the IDE is not the important thing as the main problem is at runtime. Only LNet httpsvlt is calling the BeginGlobalLoading unless some other call it using some kind of opaque pointer :-? Avoid circular component references in the forms and adjust the creation order that the referencing forms are created later or use MSEgui: msebegingloballoading; [...] create the forms mseendgloballoading; Lazarus: begingloballoading; [...] create the forms notifygloballoading; endgloballoading; (not tested). Martin ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
Re: [fpc-devel] Pre-zeroing in MM by background thread/process
Am 06.10.2010 05:57, schrieb Adem: I did a global search on trunk\compiler and found the following numbers: GetMem(): 212 hits FillChar(): 362 hits I haven't checked any other fpc folder, but I am sure those figures would multiply. What I did notice was that GetMem() and FillChar() were being used in pairs most of the time --as opposed to using AllocMem() which had 16 hits. My focus isn't on the merits of using AllocMem() instead of GetMem() and FillChar() pair; what I do notice is the fact that in a lot of places there is a strong need for zeroed memory. That brings me to the idea of handling the zeroing of memory chunks by the memory manager (MM) instead of doing it in-line. A similiar idea has been discussed already here: http://www.mail-archive.com/fpc-devel@lists.freepascal.org/msg17846.html Besides this, it is pretty simple: give it a try and provide a patch. ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
Re: [fpc-devel] Pre-zeroing in MM by background thread/process
Am 06.10.2010 05:57, schrieb Adem: I did a global search on trunk\compiler and found the following numbers: GetMem(): 212 hits FillChar(): 362 hits [...] --- More hit data: fpc/trunk/packages/ GetMem(): 1464 hits FillChar(): 608 hits trunk/lazarus/ GetMem(): 522 hits FillChar(): 1366 hits You might also search in rtl/ (especially objpas), because that contains the core of FPC's class system (and almost everything passes through that code some time). You might also try a proof of concept implementation of your idea to demonstrate whether there really is a benefit (you can replace the default memory manager, so you should be able to test this without touching the current default heap manager). Regards, Sven ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
Re[2]: [fpc-devel] LocalReferenceFixup
Hello FPC, Wednesday, October 6, 2010, 8:37:44 AM, you wrote: Yes, but it is not set, because BeginGlobalLoading is not called at [...] MS Avoid circular component references in the forms and adjust the creation order MS that the referencing forms are created later or use [...] MS Lazarus: MS MS begingloballoading; MS [...] create the forms MS notifygloballoading; MS endgloballoading; MS MS (not tested). I think I can see your point, but from the end user point of view this is not a possibility. How to tell to the user, Remeber you must call beginglobal... and notifyglobal... and finally endglobal... when you create forms with components that need a global loading link reference fixup :-? Moreover user can not take care of creation order, it is not deterministic (AFAIK), there is no way to change it in Lazarus and finally it defeats the drag/drop/design paradigm. I have a form with 25 SQLQuery, 23 of them are chained in some way, if I need a new one at the beginning I must delete 23, add the new one, create or paste the 23 again and relink manually again ? So the final question, should this moved from fpc-devel to Lazarus mailing list ? Is it not considered a bug in the TReader ? Thank you. -- Best regards, José ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
