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Asked: 2026-05-27T05:39:30+00:00

I have used Totalview’s Memoryscape to do some memory leaks checks and I have

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I have used Totalview’s Memoryscape to do some memory leaks checks and I have “none”, well at least none on the HEAP….but it seems tools like MemoryScape only check the heap, not stack leaks…

I have noticed a small leak occurring on AIX and Solaris (any maybe Linux, still checking)….and am trying to hunt it down.

I do use a single (joinable) thread in my application that does all the work…

Please bear with me, C is not my day job 😉 but I have 2 questions:

  • If I spawn an POSIX thread and it does malloc’s etc…are these on the heap or on the threads stack? Would a memory checking (heap) tool typically also find leaks when a thread does not free a malloc?

  • What tools would you recommend to use to find leaks on the STACK? I have used “libumem” on Solaris but not sure if that is finding what I need..

Can I perhaps use VALGRIND on Linux to check for leaks on my thread’s stack?

Thanks for the help 😉

Lynton

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1 Answer

  1. Editorial Team

    If I spawn an POSIX thread and it does malloc’s etc…are these on the
    heap or on the threads stack? Would a memory checking (heap) tool
    typically also find leaks when a thread does not free a malloc?

    Everything you get via malloc, no matter where you call it is from the heap. A memory debugger should be able to catch leaks. Valgrind is a good tool to find leaks, it should work well with threads.

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