delta/elfutils.git/tests/backtrace-data.c, branch robustify

tests: Don't use ptrace detach stopped trick. Raise can return.

2014-01-04T22:28:33+00:00

On older kernels the ptrace detach stop trick doesn't work reliably.
Just keep the child processes attached and stopped during the tests,
dwfl_linux_proc_attach will handle that fine now. Also on older kernels
raise would sometimes return anyway and cause a spurious assert. Just
ignore it.

Signed-off-by: Mark Wielaard

libdwfl: Add dwfl_getthread_frames.

2013-12-23T21:57:22+00:00

dwfl_getthread_frames is a convenience function for when the user is only
interested in one specific thread id of a process. It can be implemented by
a simple wrapper function that removes an extra callback layer just to
filter on thread id. But it also provides an optimized path to getting
access to just one particular Dwfl_Thread of the Dwfl process by providing
and (optional) new callback for the state provider. The pid_thread_callbacks
now provide an (optional) pid_getthread that doesn't need to travers all
threads anymore. Which is implemented for the linux-pid-attach provider.

stack now uses this to implement a new '-1' option that shows just one
specific thread of a process.

Signed-off-by: Mark Wielaard

tests: SKIP backtrace-data and backtrace-dwarf on unsupported arches.

2013-12-05T14:29:36+00:00

run-backtrace-data.sh did check stderr whether the arch was unsupported
but the test didn't print that message yet. backtrace-dwarf did print
the message but was missing a check_unsupported test. Also add an explicit
check_main test for backtrace-dwarf.

Signed-off-by: Mark Wielaard

Tests for unwinder of x86*.

2013-12-02T19:54:28+00:00

Signed-off-by: Jan Kratochvil