Re: [fpc-devel] fpc 14894 svn does not compile
On 13 Feb 2010, at 03:06, ABorka wrote: gives the following error for make all (win xp 32bit) Are you starting the compilation with FPC 2.4.0? Jonas ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
Re: [fpc-devel] fpc 14894 svn does not compile
Am Samstag, 13. Februar 2010 11:15 schrieb Jonas Maebe: On 13 Feb 2010, at 11:10, ABorka wrote: My ppc386.exe is v2.5.1 compiled back in September Building FPC svn trunk has always been and will always be only supported when starting using the compiler the latest official release (which is 2.4.0 at this time). Is there a place when I can download the newer binary files/utils needed for the compile if that is the problem? You can download the latest release from the website. It would be nice to have a minimum binary package(*) for those who usually compile svn. (*) for linux, this would contain only ppc386-240, which is only 770K as tar.bz2 (or 821K as tar.gz) instead of 26MB/34MB of rpm/ one-big-file.tar. regards Burkhard ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
[fpc-devel] GetHeapStatus.TotalAllocated
Hello people, after switching to FPC 2.4.0 I've noticed that: 1) GetHeapStatus.TotalAllocated does not seem to reflect size of allocations made by other threads anymore (I can provide a small example). I think such behaviour is not quite correct. 2) GetHeapStatus.TotalAllocated sometimes return negative values, though I haven't been able to prepare a reasonably small example yet (should I?) Thank you! Nikolai ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
Re: [fpc-devel] GetHeapStatus.TotalAllocated
Nikolai Zhubr schreef: Hello people, 2) GetHeapStatus.TotalAllocated sometimes return negative values, though I haven't been able to prepare a reasonably small example yet (should I?) Maybe that is caused by an overflow. So you need a long running example. Vincent ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
Re: [fpc-devel] GetHeapStatus.TotalAllocated
13.02.2010 14:50, Vincent Snijders: 2) GetHeapStatus.TotalAllocated sometimes return negative values, though I haven't been able to prepare a reasonably small example yet (should I?) Maybe that is caused by an overflow. So you need a long running example. The program in question does not consume much memory and was running a few hours. It is multithreaded. According to task manager (this was on windows) actual mem usage was approximately the same as before (below 10 Mbytes). Nikolai Vincent ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
Re: [fpc-devel] GetHeapStatus.TotalAllocated
On 13 Feb 2010, at 12:44, Nikolai Zhubr wrote: 1) GetHeapStatus.TotalAllocated does not seem to reflect size of allocations made by other threads anymore (I can provide a small example). I think such behaviour is not quite correct. The heap manager is now separate per thread so it offers much better performance. Keeping track of this information aggregated for all threads would slow things down again (even if it would be done using atomic operations). 2) GetHeapStatus.TotalAllocated sometimes return negative values, though I haven't been able to prepare a reasonably small example yet (should I?) Yes. Jonas___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
Re: [fpc-devel] GetHeapStatus.TotalAllocated
13.02.2010 16:33, Jonas Maebe: The heap manager is now separate per thread so it offers much better performance. Keeping track of this information aggregated for all threads would slow things down again (even if it would be done using atomic operations). So it is indeed not possible to obtain global status anymore? But how would one check global heap usage then? The necessity to collect such information by iterating through all threads somehow scares me... In particular, if some thread happens to hang or dies unexpectedly. Still, is there some recommended way to estimate heap usage per application, at least approximately? 2) GetHeapStatus.TotalAllocated sometimes return negative values, though I haven't been able to prepare a reasonably small example yet (should I?) Yes. Ok, I'll try to figure. Thank you! Nikolai ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
Re: [fpc-devel] GetHeapStatus.TotalAllocated
On 13 Feb 2010, at 20:51, Nikolai Zhubr wrote: 13.02.2010 16:33, Jonas Maebe: The heap manager is now separate per thread so it offers much better performance. Keeping track of this information aggregated for all threads would slow things down again (even if it would be done using atomic operations). So it is indeed not possible to obtain global status anymore? Not with the default heap manager. But how would one check global heap usage then? The necessity to collect such information by iterating through all threads somehow scares me... In particular, if some thread happens to hang or dies unexpectedly. Still, is there some recommended way to estimate heap usage per application, at least approximately? Not without implementing a custom memory manager that does this or using some OS function to obtain this information. Jonas___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
Re: [fpc-devel] GetHeapStatus.TotalAllocated
13.02.2010 22:51, Jonas Maebe: [trim] Not without implementing a custom memory manager that does this or using some OS function to obtain this information. So even some extra InterlockedExchangeAdd would be too expensive? ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
Re: [fpc-devel] GetHeapStatus.TotalAllocated
On 13 Feb 2010, at 21:21, Nikolai Zhubr wrote: 13.02.2010 22:51, Jonas Maebe: [trim] Not without implementing a custom memory manager that does this or using some OS function to obtain this information. So even some extra InterlockedExchangeAdd would be too expensive? It would make the memory manager slower, and I don't think that aggregating few statistics is a good reason to do so (especially since very few programs actually use that data). If you want that data, you can always install a very simple memory manager that simply calls through to the original one, but which keeps track of global statistics. Jonas___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
Re: [fpc-devel] fpc 14894 svn does not compile
Thanks Jonas, using 2.4.0 for the 1st compile worked. I guess I shouldn't wait months before recompiling the latest SVN :) On 2/13/2010 02:15, Jonas Maebe wrote: On 13 Feb 2010, at 11:10, ABorka wrote: My ppc386.exe is v2.5.1 compiled back in September Building FPC svn trunk has always been and will always be only supported when starting using the compiler the latest official release (which is 2.4.0 at this time). Is there a place when I can download the newer binary files/utils needed for the compile if that is the problem? You can download the latest release from the website. Jonas___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
Re: [fpc-devel] fpc 14894 svn does not compile
On 13 Feb 2010, at 21:48, ABorka wrote: Thanks Jonas, using 2.4.0 for the 1st compile worked. I guess I shouldn't wait months before recompiling the latest SVN :) Even if you subsequently recompile every new svn revision it may sometimes suddenly not work anymore with your previously compiled svn trunk version. As mentioned before: only compiling using the latest release is guaranteed to work at all times! Jonas___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
Re: [fpc-devel] fpc 14894 svn does not compile
In our previous episode, Jonas Maebe said: Thanks Jonas, using 2.4.0 for the 1st compile worked. I guess I shouldn't wait months before recompiling the latest SVN :) Even if you subsequently recompile every new svn revision it may sometimes suddenly not work anymore with your previously compiled svn trunk version. As mentioned before: only compiling using the latest release is guaranteed to work at all times! I added linux/i386 and /x86_64 compilers to bootstrap: ftp://freepascal.stack.nl/pub/fpc/dist/2.4.0/bootstrap/ ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
Re: [fpc-devel] GetHeapStatus.TotalAllocated
13.02.2010 16:33, Jonas Maebe: [...] The heap manager is now separate per thread so it offers much better performance. Wait a minute. Is it then still legal for any thread to dispose heap blocks allocated by another thread? Nikolai ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
Re: [fpc-devel] GetHeapStatus.TotalAllocated
On 13 Feb 2010, at 22:22, Nikolai Zhubr wrote: 13.02.2010 16:33, Jonas Maebe: [...] The heap manager is now separate per thread so it offers much better performance. Wait a minute. Is it then still legal for any thread to dispose heap blocks allocated by another thread? Yes, that's taken care of behind the scenes. Jonas___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
Re: [fpc-devel] GetHeapStatus.TotalAllocated
14.02.2010 0:30, Jonas Maebe: The heap manager is now separate per thread so it offers much better performance. Wait a minute. Is it then still legal for any thread to dispose heap blocks allocated by another thread? Yes, that's taken care of behind the scenes. Ok. That is good. Now, I'm starting to suspect that negative TotalAllocated values just result from doing deallocations in a different thread, which is what my programm actually does all the time. I'll go to make a small test. Nikolai Jonas___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
Re: [fpc-devel] RFC: changing conditional compilation
Hi Jonas,
As you can imagine I'd prefer to solve the $ifdef problem ;-)
To be honest: no, I can't imagine why you would prefer that. The entire
difference between $ifdef and $if is that $if checks the value of something
(and hence will give an error if the symbol is undefined) and $ifdef checks
whether it is defined or not. As far as I can tell, you would simply like to
be able to use boolean constants in $if expressions.
Hope you rethink your opinion the next time you forget to add an {$I}
or mess up a define name ;-)
Best regards,
Flávio
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Re: [fpc-devel] GetHeapStatus.TotalAllocated
Nikolai Zhubr wrote: Now, I'm starting to suspect that negative TotalAllocated values just result from doing deallocations in a different thread, which is what my programm actually does all the time. I'll go to make a small test. Maybe it's related to (or the same as) bug 14315? http://bugs.freepascal.org/view.php?id=14315 Micha ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
[fpc-devel] Re: GetHeapStatus.TotalAllocated
As for the negative numbers (possible overflow) from the heap status, I logged a bug on that, with an example program, quite some time ago. http://bugs.freepascal.org/view.php?id=14315 -SG -- This email is fiction. Any resemblance to actual events or persons living or dead is purely coincidental. Seth Grover sethdgrover[at]gmail[dot]com ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
