On Sat, 2024-07-20 at 11:01 +0200, Philippe Waroquiers via Valgrind- users wrote: > On Wed, 2024-07-17 at 20:47 +0200, Julian Seward wrote: > > Also, there is no gdbserver involved unless you start it with > > specific > > flags to invoke GDB support. But that is not the default. > > Note that the option to activate or not the gdbserver in valgrind is: > --vgdb=no|yes|full activate gdbserver? [yes] > Default option is yes, which means that the gdbserver is activated > but has > no impact on the generated code. With full, the generated code is > slower but allows > more precise breakpoints and watchpoints. I am running with the default 'yes' - so I can query it with shell vgdb.
> > Unless you also use e.g. --vgdb-stop-at= or --vgdb-error=XXXX, > -vgdb=yes should have no visible impact and cause no interaction > between > different valgrind processes. > I agree there is no interaction in how I am using valgrind (see last post), but not knowing this before prompted me to ask the question on this list. I did not use --vgd-stop-at or setup --multi mode of interacting with gdbserver via gdb. Nevertheless, 'target remote | vgdb' is equivalent to attaching to the process in gdb, allowing full debugging, though without the vgdb commands (v.clo, v.info etc). These queries elicit no response presumably because valgrind-monitor.py is missing from gdb. > Note that if --vgdb=no is specified, a set of features (such as > external control > from the shell, callgrind_control, ...) will not be available (in > addition to no > no debugging). Once I attached to the valgrind process from gdb, any further query from shell vgdb elicits a response I'm busy talking to another client already, can't talk to you. Detaching in gdb then allows further queries with shell vgdb. This leads me to another question: If you vgdb v.kill the valgrind process, can you and how, get a final detail report of all the errors which is generated when the process terminates "normally"? Thanks, Elaine > > Thanks > Philippe > > > > _______________________________________________ > Valgrind-users mailing list > Valgrind-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/valgrind-users _______________________________________________ Valgrind-users mailing list Valgrind-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/valgrind-users
