C++Talk.NET C++ language newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  Profiler for dynamic memory allocation?          C++Talk.NET Forum Index -> C++ Language (Moderated) View previous topic :: View next topic   Author Message Scott Meyers Guest Posted: Thu Dec 18, 2003 8:53 am    Post subject: Profiler for dynamic memory allocation? If I want to know where my program is spending its time, I can use a profiler. Among other things, it "collapses" call chains such that if I have void f() { g(); h(); j(); } I can find out how much time is spent in f without having to manually add the times spent in g, h, and j. But what if I want the same kind of information about dynamic memory allocations? Suppose I want to know how much memory is allocated in f, including in any of the functions directly or indirectly called by f. Are there tools that report this kind of information? Thanks, Scott [ See http://www.gotw.ca/resources/clcm.htm for info about ] [ comp.lang.c++.moderated. First time posters: Do this! ] Back to top Dhruv Guest Posted: Fri Dec 19, 2003 2:35 am    Post subject: Re: Profiler for dynamic memory allocation? On Thu, 18 Dec 2003 03:53:54 -0500, Scott Meyers wrote: [...] Quote: Are there tools that report this kind of information? To cut a long story short, you should try valgrind. <ripped from another post> Try valgrind: http://www.tldp.org/HOWTO/Valgrind-HOWTO/ Regards, -Dhruv. [ See http://www.gotw.ca/resources/clcm.htm for info about ] [ comp.lang.c++.moderated. First time posters: Do this! ] Back to top Scott Meyers Guest Posted: Fri Dec 19, 2003 7:57 am    Post subject: Re: Profiler for dynamic memory allocation? On 18 Dec 2003 21:35:20 -0500, Dhruv wrote: Quote: To cut a long story short, you should try valgrind. Any chance you can elaborate a little? From the web site you cited: As said above, memory management is prone to errors that are too hard to detect. Common errors may be listed as: Use of uninitialized memory Reading/writing memory after it has been freed Reading/writing off the end of malloc'd blocks Reading/writing inappropriate areas on the stack Memory leaks -- where pointers to malloc'd blocks are lost forever Mismatched use of malloc/new/new[] vs free/delete/delete[] Some misuses of the POSIX pthreads API These errors usually lead to crashes. This is a situation where we need Valgrind. None of this is what I asked about (memory usage profiling), and a quick scan of the Valgrind doc didn't reveal any obvious capabilities in that area. Did I just overlook something? Scott [ See http://www.gotw.ca/resources/clcm.htm for info about ] [ comp.lang.c++.moderated. First time posters: Do this! ] Back to top Dhruv Guest Posted: Fri Dec 19, 2003 2:18 pm    Post subject: Re: Profiler for dynamic memory allocation? On Fri, 19 Dec 2003 02:57:35 -0500, Scott Meyers wrote: Quote: On 18 Dec 2003 21:35:20 -0500, Dhruv wrote: To cut a long story short, you should try valgrind. Any chance you can elaborate a little? From the web site you cited: As said above, memory management is prone to errors that are too hard to detect. Common errors may be listed as: [...] Quote: None of this is what I asked about (memory usage profiling), and a quick scan of the Valgrind doc didn't reveal any obvious capabilities in that area. Did I just overlook something? But, that's the best you can get for free AFAIK. If you're willing to shell out out some greens, then you could try: http://www.codework.com/glowcode/product.html Regards, -Dhruv. [ See http://www.gotw.ca/resources/clcm.htm for info about ] [ comp.lang.c++.moderated. First time posters: Do this! ] Back to top Jeff Greif Guest Posted: Sat Dec 20, 2003 11:35 am    Post subject: Re: Profiler for dynamic memory allocation? Though I've not used it for a few I'm pretty sure that Rational Quantify (need $) provided memory allocation stats for the various code paths (e.g. the cumulative memory allocation for f, with splits into what was allocated in g,h,and j in your example), with ability to separate those from what was allocated in other calls to g,h,j. Jeff "Scott Meyers" <Usenet (AT) aristeia (DOT) com> wrote Quote: But what if I want the same kind of information about dynamic memory allocations? Suppose I want to know how much memory is allocated in f, including in any of the functions directly or indirectly called by f. Are there tools that report this kind of information? [ See http://www.gotw.ca/resources/clcm.htm for info about ] [ comp.lang.c++.moderated. First time posters: Do this! ] Back to top Michael W. Hicks Guest Posted: Sat Dec 20, 2003 11:43 am    Post subject: Re: Profiler for dynamic memory allocation? "Scott Meyers" <Usenet (AT) aristeia (DOT) com> wrote Quote: If I want to know where my program is spending its time, I can use a profiler. Among other things, it "collapses" call chains such that if I have void f() { g(); h(); j(); } I can find out how much time is spent in f without having to manually add the times spent in g, h, and j. But what if I want the same kind of information about dynamic memory allocations? Suppose I want to know how much memory is allocated in f, including in any of the functions directly or indirectly called by f. Are there tools that report this kind of information? Thanks, Scott Scott, I believe a tool that might satisfy these requirements is Memory Validator -- http://www.softwareverify.com. It tracks allocations at the function level of granularity and much more (peak totals, running totals, leaks, handles, etc.) It's definitely a profiler rather than just a leak detector. It's a fairly heavy weight tool, so it might take a bit to find the functionality you require. I believe this app is exclusively for the Win32 environment, if that matters... HTH, - Mike [ See http://www.gotw.ca/resources/clcm.htm for info about ] [ comp.lang.c++.moderated. First time posters: Do this! ] Back to top Display posts from previous: All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First         C++Talk.NET Forum Index -> C++ Language (Moderated) All times are GMT Page 1 of 1   Jump to: Select a forum C/C++----------------C LanguageC Language (Moderated)C++ Language (Moderated)C++ language (comp.lang.c++)C++ language, library and standards Non-English C/C++ Newsgroups----------------C++ (German)C++ (French)  You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum Powered by phpBB © 2001, 2006 phpBB Group SEO toolkit © 2004-2006 webmedic.