Valgrind

  • Valgrind is a programming tool for memory debugging, memory leak detection, and profiling
  • It shows memory leaks, deallocation errors in the program

Build steps

Follow the link for RPi build steps- RDK-B R-Pi Build guide

Installation

By adding the below changes, we can install valgrind in RPI-target

In the <image_recipe.bbappend>

IMAGE_INSTALL_append += " valgrind"

Valgrind also needs some of the previously defined features, specifically:

$YOCTO_BUILD/conf/local.conf:

EXTRA_IMAGE_FEATURES += " dbg-pkgs tools-debug "

Execution

Command to check memory leak

valgrind --tool=memcheck --leak-check=full --show-reachable=yes --num-callers=20 --track-fds=yes /usr/bin/<component>

Defining the options:

--tool=memcheck: "To the check the memory"
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--leak-check=full: "each individual leak will be shown in detail"
  
--show-reachable=yes: "When enabled, the leak detector also shows "reachable" and "indirectly lost" blocks"
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--num-callers=20: "Specifies the maximum number of entries shown in stack traces that identify program locations"
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--track-fds=yes: "When enabled, Valgrind will print out a list of open file descriptors on exit."
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/usr/bin/<component>: "Component's binary path"


Attached valgrind results for reference,
valgrind_pandm.txt

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