Re: [Valgrind-users] Debugging a Tcl extension with a multi-thread program

[Philippe W. <phi...@sk...>]

On Fri, 2013-04-12 at 11:03 +0200, MOULINIER Luc (UDS) wrote:

> As my program is multi-threaded, a normal run of valgrind doesn't work.
Valgrind is able to run a multi-thread program (even if it serialises
the execution, i.e. even on a multi-cpu, only one thread runs at
a single time).
However, if you want to debug your program when Valgrind encounters
an error, then effectively you have to use GDB+vgdb.

>  
> gdb /usr/local/ActiveTcl/bin/tclsh
> and then
> target remote | vgdb
> 
> but then I can't give a "run /home/moumou/ordali/src/ordali.tcl exe ThrSco" command to gdb ! "run is not allowed using vgdb"
Effectively, the GDB command "run" cannot be used with the Valgrind
gdbserver : you must first launch your program using
valgrind --vgdb-error=0 your_program your_program_args
then connect GDB to the valgrind gdbserver using vgdb.

You then use the GDB commands "continue", or "next", or "step" to allow
the execution of your_program to proceed.

Philippe