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dgoguerra/debugging.md

Created January 28, 2014 09:49
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Valgrind debugging notes
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debugging.md

Remote debugging with GDB and Valgrind

First, Valgrind starts the program to debug:

$ valgrind --vgdb=yes --vgdb-error=0 [valgrind-options] [program] [program-options]

It will halt until GDB is hooked to the process, from another terminal:

$ gdb [program]
$ target remote | vgdb

Branch prediction profiling

Valgrind's tool callgrind is a branch prediction profiler; its output can be visualized with Kcachegrind to generate a call graph of the program, among other things.

$ valgrind --tool=callgrind [program] [program-options]
$ kcachegrind callgrind.out.<pid>
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