BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  "Out Of Memory" Exception?          BorlandTalk.com Forum Index -> C++ Builder (IDE) View previous topic :: View next topic   Author Message Paul at NCF Guest Posted: Tue Apr 24, 2007 8:10 am    Post subject: "Out Of Memory" Exception? Hi, We're running a larget BCB6 Pro project and after 10-15 minutes of activity an Out Of Memory Exception occurs, stack points to a request for memory "uchar * ptr = new uchar [1060]". The application continues to run successfully (when run outside the debugger). CodeGuard is switch on and we're not getting any errors during the run. TaskMan shows no memory issues. Does anyone have any clues or ideas from previous experience? Regards, Paul Back to top Remy Lebeau (TeamB) Guest Posted: Tue Apr 24, 2007 8:10 am    Post subject: Re: "Out Of Memory" Exception? "Paul at NCF" <notplmacca (AT) clara (DOT) co.uk> wrote in message news:462daa08$1 (AT) newsgroups (DOT) borland.com... Quote: Does anyone have any clues or ideas from previous experience? For such a small allocation to fail so early in the process's lifetime, I can only imagine that you must be seriously fragmenting memory to the point where allocations can't be satisfied anymore. What is your program doing to begin with? Gambit Back to top Pete Fraser Guest Posted: Tue Apr 24, 2007 8:10 am    Post subject: Re: "Out Of Memory" Exception? try using memproof from automatedqa.com to see if you have any memory problems - it's free. HTH Pete "Paul at NCF" <notplmacca (AT) clara (DOT) co.uk> wrote in message news:462daa08$1 (AT) newsgroups (DOT) borland.com... Quote: Hi, We're running a larget BCB6 Pro project and after 10-15 minutes of activity an Out Of Memory Exception occurs, stack points to a request for memory "uchar * ptr = new uchar [1060]". The application continues to run successfully (when run outside the debugger). CodeGuard is switch on and we're not getting any errors during the run. TaskMan shows no memory issues. Does anyone have any clues or ideas from previous experience? Back to top Paul at NCF Guest Posted: Wed Apr 25, 2007 2:36 am    Post subject: Re: "Out Of Memory" Exception? Hi Remy, Its something I have been doing for sometime (with help from the newsgroup). We've ported an old embedded 186 system to run under the Win32 environment. Its a ticket machine with a lot of peripherals (serial), it accesses a server using TCP-IP, and I've got a SysLog client for remote diagnostic output. I was thinking that it may be fragmentation, as the underlying architecure for running the orignally embedded tasks is well tested now and we get no issues in any of the test harnesses and soak tests (which test each part in isolation). And with Code Guard running, its not picking up anything either. It doesn't really have a GUI, only a small edit window for showing debug output (which again is common with all the test harnesses, and some of the serial and UDP soak tests can run for days and days and never show a problem). I know Code Guard doesn't pick up memory leaks in VCL, but as mentioned the memory usage is low and shows no symptoms of leaking in perfmon or taskman. Perhaps I'll switch off or lower the diagnostic level output (edit window and syslog) to see if it makes a difference. If the memory is being fragmented, perhaps quicker than the heap manager can tidy it, whats the solution? Regards Paul "Remy Lebeau (TeamB)" <no.spam (AT) no (DOT) spam.com> wrote in message news:462db619$1 (AT) newsgroups (DOT) borland.com... Quote: "Paul at NCF" <notplmacca (AT) clara (DOT) co.uk> wrote in message news:462daa08$1 (AT) newsgroups (DOT) borland.com... Does anyone have any clues or ideas from previous experience? For such a small allocation to fail so early in the process's lifetime, I can only imagine that you must be seriously fragmenting memory to the point where allocations can't be satisfied anymore. What is your program doing to begin with? Gambit Back to top Paul at NCF Guest Posted: Wed Apr 25, 2007 8:10 am    Post subject: Re: "Out Of Memory" Exception? Thanks, I'll give this a go. I've also downloaded the latest FastMM to see if I can include it in my BCB6 project instead of Borland's memory manager. "Pete Fraser" <pete.nospam.fraser.nospam (AT) frasersoft (DOT) nospam.net> wrote in message news:462db912$1 (AT) newsgroups (DOT) borland.com... Quote: try using memproof from automatedqa.com to see if you have any memory problems - it's free. HTH Pete "Paul at NCF" <notplmacca (AT) clara (DOT) co.uk> wrote in message news:462daa08$1 (AT) newsgroups (DOT) borland.com... Hi, We're running a larget BCB6 Pro project and after 10-15 minutes of activity an Out Of Memory Exception occurs, stack points to a request for memory "uchar * ptr = new uchar [1060]". The application continues to run successfully (when run outside the debugger). CodeGuard is switch on and we're not getting any errors during the run. TaskMan shows no memory issues. Does anyone have any clues or ideas from previous experience? Back to top Paul at NCF Guest Posted: Thu Apr 26, 2007 8:10 am    Post subject: Re: "Out Of Memory" Exception? Hi, I've seen numerous reports of strange Out Of Memory errors within the BCB Groups, so it doesn't seem to be an unknown (which is now worrying me). Has anyone used FastMM4 with BCB6, and are there any issues I should be aware of? Regards, Paul "Paul at NCF" <notplmacca (AT) clara (DOT) co.uk> wrote in message news:462daa08$1 (AT) newsgroups (DOT) borland.com... Quote: We're running a larget BCB6 Pro project and after 10-15 minutes of activity an Out Of Memory Exception occurs, stack points to a request for memory "uchar * ptr = new uchar [1060]". The application continues to run successfully (when run outside the debugger). CodeGuard is switch on and we're not getting any errors during the run. TaskMan shows no memory issues. Back to top Dennis Cote Guest Posted: Thu Apr 26, 2007 7:44 pm    Post subject: Re: "Out Of Memory" Exception? Paul at NCF wrote: Quote: Hi, We're running a larget BCB6 Pro project and after 10-15 minutes of activity an Out Of Memory Exception occurs, stack points to a request for memory "uchar * ptr = new uchar [1060]". The application continues to run successfully (when run outside the debugger). CodeGuard is switch on and we're not getting any errors during the run. TaskMan shows no memory issues. Does anyone have any clues or ideas from previous experience? Paul, I have had similar strange memory allocation failures. I have posted about it a couple of times. It seems to be related to CodeGuard. I haven't been able to look into further for quite some time. There might be some useful info in my previous posts (then again there might not). Look at the thread "A comedy of errros" in borland.public.cppbuilder.ide or at the archive at http://216.101.185.148/scripts/isapi.dll/thread?id=64512133&thread=1554129 Please let us know if you find anything. Dennis Cote Back to top Dennis Cote Guest Posted: Thu Apr 26, 2007 8:57 pm    Post subject: Re: "Out Of Memory" Exception? Dennis Cote wrote: Quote: or at the archive at http://216.101.185.148/scripts/isapi.dll/thread?id=64512133&thread=1554129 Oops, Sorry about the bad link. Try http://www.tamaracka.com/ and enter the "comedy of errors" in the search box. Dennis Cote Back to top Paul at NCF Guest Posted: Fri Apr 27, 2007 8:10 am    Post subject: Re: "Out Of Memory" Exception? Hi, Yep this seems to be similar to my experience. BCB6, CodeGuard, about 24 threads, sending lots of small / large messages to eachother (24/7). As metioned in my initial message, I've written a framework to simulate an embedded environment to move a legacy real time embedded application to run under Windows, which works great and has been smoother than I expected (so far), apart from this frustrating issue. Perhaps I should only use code guard for the small test harnesses and soak tests, and when running the full application switch it off and use memproof or something else. I'm also trying FastMM4, but unsure about its known reliability and performance (in BCB6). Is the latest IDE upgrade be better (I was confused as to if the problem you had was BCB6 or BDS2006? Paul "Dennis Cote" <dennis.cote (AT) gmail (DOT) com> wrote in message news:4630cc00 (AT) newsgroups (DOT) borland.com... Quote: Dennis Cote wrote: or at the archive at http://216.101.185.148/scripts/isapi.dll/thread?id=64512133&thread=1554129 Oops, Sorry about the bad link. Try http://www.tamaracka.com/ and enter the "comedy of errors" in the search box. Dennis Cote Back to top Dennis Cote Guest Posted: Fri Apr 27, 2007 7:22 pm    Post subject: Re: "Out Of Memory" Exception? Paul at NCF wrote: Quote: Hi, Yep this seems to be similar to my experience. BCB6, CodeGuard, about 24 threads, sending lots of small / large messages to eachother (24/7). As metioned in my initial message, I've written a framework to simulate an embedded environment to move a legacy real time embedded application to run under Windows, which works great and has been smoother than I expected (so far), apart from this frustrating issue. Perhaps I should only use code guard for the small test harnesses and soak tests, and when running the full application switch it off and use memproof or something else. I'm also trying FastMM4, but unsure about its known reliability and performance (in BCB6). Is the latest IDE upgrade be better (I was confused as to if the problem you had was BCB6 or BDS2006? Paul, I am having the problem with BDS 2006. Clayton was having the problem with BCB6 but he thought the problem was corrected in BDS 2006. I found that his test was working in BDS 2006 only because his threads were running to completion in one time slice, i.e. they were all running sequentially, it was never switching between active threads. By increasing the runtime of each thread, the problem appeared in BDS 2006 as well. I haven't found any solution short of disabling codeguard. HTH Dennis Cote Back to top Paul at NCF Guest Posted: Fri Apr 27, 2007 8:56 pm    Post subject: Re: "Out Of Memory" Exception? Thanks for your help. Quote: I haven't found any solution short of disabling codeguard. HTH Dennis Cote Back to top Paul at NCF Guest Posted: Sat May 05, 2007 1:24 am    Post subject: Re: "Out Of Memory" Exception? Hi, As expected, disabling CodeGuard stopped the problem. Thanks for the help. 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