Re: [Mono-dev] Stop Garbage Collection for a Codeblock
Using the fixed keyword you can prevent the collection of a memory block, however Im not sure this is what youre looking for. Also I fail to see how this (by itself) could possibly help with time-critical parts. Greetings Andreas _ Von: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Im Auftrag von Back, Michael (ext) Gesendet: Donnerstag, 8. März 2007 10:06 An: mono-devel-list@lists.ximian.com Betreff: [Mono-dev] Stop Garbage Collection for a Codeblock Hi! Is it possible to stop the GC for garbage collecting for a code block? This would be helpful for time critical parts. I think about something like gc_barrierer_on and gc_barrierer_off. If such possibility doesn't exists, may be it could implemented and improve mono :-) With best regards Michael Back ___ Mono-devel-list mailing list Mono-devel-list@lists.ximian.com http://lists.ximian.com/mailman/listinfo/mono-devel-list
Re: [Mono-dev] Stop Garbage Collection for a Codeblock
Hi Andreas, thanks for this hint - nice feature. But we want that GC does nothing while a special code block ist executed! Thanks Michael Von: Andreas Nahr [mailto:[EMAIL PROTECTED] Gesendet: Thursday, March 08, 2007 10:22 AM An: Back, Michael (ext); mono-devel-list@lists.ximian.com Betreff: AW: [Mono-dev] Stop Garbage Collection for a Codeblock Using the fixed keyword you can prevent the collection of a memory block, however I'm not sure this is what you're looking for. Also I fail to see how this (by itself) could possibly help with time-critical parts. Greetings Andreas Von: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Im Auftrag von Back, Michael (ext) Gesendet: Donnerstag, 8. März 2007 10:06 An: --=extPart_000_01D8_01C7616B.986Creff: [Mono-dev] Stop Garbage Collection for a Codeblock Hi! Is it possible to stop the GC for garbage collecting for a code block? This would be helpful for time critical parts. I think about something like gc_barrierer_on and gc_barrierer_off. If such possibility doesn't exists, may be it could implemented and improve mono :-) With best regards Michael Back ___ Mono-devel-list mailing list Mono-devel-list@lists.ximian.com http://lists.ximian.com/mailman/listinfo/mono-devel-list
Re: [Mono-dev] Stop Garbage Collection for a Codeblock
On Thu, 2007-03-08 at 10:05 +0100, Back, Michael (ext) wrote: Is it possible to stop the GC for garbage collecting for a code block? Simple (yet glib) answer: Don't allocate anything from the GC. If you don't allocate GC memory, then the GC won't get involved. :-) Sadly, this is the safest solution. If you disable the GC and the GC heap runs out of space, what should happen? An OutOfMemoryException is probably the only viable choice, which would likely be worse for you than just having the GC intervene. - Jon ___ Mono-devel-list mailing list Mono-devel-list@lists.ximian.com http://lists.ximian.com/mailman/listinfo/mono-devel-list
Re: [Mono-dev] Stop Garbage Collection for a Codeblock
Just my two cents, The only reason i can think of where you'd require this kind of behaviour is when you need real time processing and any kind of delay could be disasterous. In this case, i wouldn't think C# would be a good choice to implement in. What you could do is write a C program/library which does that really special task and call it so that it will remain unaffected by the GC and will do it's realtime processing in peace. Hope that helps, Alan On 3/8/07, Jonathan Pryor [EMAIL PROTECTED] wrote: On Thu, 2007-03-08 at 10:05 +0100, Back, Michael (ext) wrote: Is it possible to stop the GC for garbage collecting for a code block? Simple (yet glib) answer: Don't allocate anything from the GC. If you don't allocate GC memory, then the GC won't get involved. :-) Sadly, this is the safest solution. If you disable the GC and the GC heap runs out of space, what should happen? An OutOfMemoryException is probably the only viable choice, which would likely be worse for you than just having the GC intervene. - Jon ___ Mono-devel-list mailing list Mono-devel-list@lists.ximian.com http://lists.ximian.com/mailman/listinfo/mono-devel-list ___ Mono-devel-list mailing list Mono-devel-list@lists.ximian.com http://lists.ximian.com/mailman/listinfo/mono-devel-list
Re: [Mono-dev] Stop Garbage Collection for a Codeblock
AFAIK it is not possible to implement realtime applications in C#. Of the managed languages, there's RealtimeJava (never used it) and Ada. And both have to be run either on a specially modified Unix or on their own micro-OS. Furthermore, I am not sure whether Ada allows GC (opposed to explicit memory freeing) at all when run in RealTime mode. This said, if all you require is really fast processing (not http://en.wikipedia.org/wiki/Real-time_computing ), then pay close attention what you feed to GC, this should be enough... On 3/8/07, Alan McGovern [EMAIL PROTECTED] wrote: Just my two cents, The only reason i can think of where you'd require this kind of behaviour is when you need real time processing and any kind of delay could be disasterous. In this case, i wouldn't think C# would be a good choice to implement in. What you could do is write a C program/library which does that really special task and call it so that it will remain unaffected by the GC and will do it's realtime processing in peace. Hope that helps, Alan On 3/8/07, Jonathan Pryor [EMAIL PROTECTED] wrote: On Thu, 2007-03-08 at 10:05 +0100, Back, Michael (ext) wrote: Is it possible to stop the GC for garbage collecting for a code block? Simple (yet glib) answer: Don't allocate anything from the GC. If you don't allocate GC memory, then the GC won't get involved. :-) Sadly, this is the safest solution. If you disable the GC and the GC heap runs out of space, what should happen? An OutOfMemoryException is probably the only viable choice, which would likely be worse for you than just having the GC intervene. - Jon ___ Mono-devel-list mailing list Mono-devel-list@lists.ximian.com http://lists.ximian.com/mailman/listinfo/mono-devel-list ___ Mono-devel-list mailing list Mono-devel-list@lists.ximian.com http://lists.ximian.com/mailman/listinfo/mono-devel-list -- MS-DOS user since 5.0 Windows user since 3.11 Linux user since kernel 2.4 Novell Netware user since 2.2 WARCRAFT user since 1.0 ___ Mono-devel-list mailing list Mono-devel-list@lists.ximian.com http://lists.ximian.com/mailman/listinfo/mono-devel-list
Re: [Mono-dev] Stop Garbage Collection for a Codeblock
On 03/08/07 Back, Michael (ext) wrote: Is it possible to stop the GC for garbage collecting for a code block? This would be helpful for time critical parts. I think about something like gc_barrierer_on and gc_barrierer_off. If such possibility doesn't exists, may be it could implemented and improve mono :-) There is no API exposed in corlib that does that, though internally the Boehm GC can do that: as the mono code is out there you could easily expose the two needed internal calls. This may mean, though, that you could get a nice OutOfMemory exception if the heap can't be expanded. Make also sure you pre-jitted all the code needed. lupus -- - [EMAIL PROTECTED] debian/rules [EMAIL PROTECTED] Monkeys do it better ___ Mono-devel-list mailing list Mono-devel-list@lists.ximian.com http://lists.ximian.com/mailman/listinfo/mono-devel-list
Re: [Mono-dev] Stop Garbage Collection for a Codeblock
hello, Is it possible to stop the GC for garbage collecting for a code block? This would be helpful for time critical parts. You would have to modify the GC to expose an API that prevents it running, then you decide what the semantics should be, but be aware that other threads will be running (like the finalizer). Miguel ___ Mono-devel-list mailing list Mono-devel-list@lists.ximian.com http://lists.ximian.com/mailman/listinfo/mono-devel-list
