delta/elfutils.git/src/stack.c, branch robustify

stack: Show and handle -r,--raw even without USE_DEMANGLE.

2014-01-02T23:06:50+00:00

Signed-off-by: Mark Wielaard

stack.c (print_frames): Print 0x before build-id hex-offset.

2014-01-02T22:59:41+00:00

Signed-off-by: Mark Wielaard

stack: Allow -n 0 for unlimited frames. Make default 2048 frames.

2014-01-02T22:49:40+00:00

Signed-off-by: Mark Wielaard

libdwfl: Add dwfl_core_file_attach and dwfl_linux_proc_attach.

2013-12-31T12:59:51+00:00

Rewrite __libdwfl_attach_state_for_pid and __libdwfl_attach_state_for_core
as public functions and don't call them from dwfl_linux_proc_report and
dwfl_core_file_report anymore. This lets the user attach state explicitly
independ from how the dwfl modules have been reported. Since attaching
state is an explicit action now the error can be returned directly and we
don't need to keep track of process_attach_error. dwfl_linux_proc_attach
lets the user can tell libdwfl whether caller takes care of ptrace
attaching and stopping the threads under inspection, or whether the
callback needs to take care of that and detaching again.

Signed-off-by: Mark Wielaard

stack: Add -l, --list-modules. Show module memory map, build-id and files.

2013-12-31T10:58:42+00:00

Use to list modules detected for process or core file by stack program
and to see build-ids and which main elf and debug files were recognized
by libdwfl callbacks.

Signed-off-by: Mark Wielaard

stack: Improve error checking and exit code handling.

2013-12-31T10:58:42+00:00

Check up front whether we attached correctly, if not error out. Make sure
callbacks report -1 only on real errors and DWARF_CB_ABORT if exiting early
(but not in error). Handle all errors from frame callback in print_frames
after printing of good frames. Print as much information as possible like
tid, address and module name if known with error messages. Only exit with
exit code zero if everything went fine. Exit with error code one if there
were any non-fatal errors. Exit with error code two if no frames could be
printed or a fatal error occurred.

Signed-off-by: Mark Wielaard

stack: Add --quiet to not resolve addresses, add --raw to not demangle.

2013-12-31T10:58:42+00:00

Resolving addresses to function symbol names can be expensive. Use -q
to only print addresses (use together with --build-id to process later).
Demangle names by default, but add the -r option to not demangle and
show the raw names.

Signed-off-by: Mark Wielaard

stack: Simplify argument parsing. Don't use dwfl_standard_argp.

2013-12-31T10:58:42+00:00

We were using dwfl_standard_argp but trying to add our own and substract
some options from it. dwfl_standard_argp also handles kernel, modules,
executables without state and process maps that stack doesn't support.
That made argp parsing somewhat ugly and meant our --help and --usage
didn't really match. Just handle the dwfl_standard_argp options we do
want directly ('-p', '--core', '-e' and '--debuginfo-path'). That way
we can also do sanity checking on the options given.

Signed-off-by: Mark Wielaard

stack: -b, --build-id shows module build-id, load address and pc offset.

2013-12-31T10:58:42+00:00

A convenient format for offline processing of the backtrace.

Signed-off-by: Mark Wielaard

stack: Add new '-n MAXFRAMES' option. Resolve addresses after unwind.

2013-12-31T10:58:42+00:00

Limit the number of frames printed per thread (defaults to 64) and resolve
addresses to names, modules and source after unwinding so the thread is
only stopped for the minimum time needed to do the actual unwinding. The
thread doesn't need to wait for the lookups and printing of information.

Signed-off-by: Mark Wielaard