I recently hit a couple of CI failures caused by relying on transitive
includes that weren't always present. include-what-you-use is a
Clang-based tool that helps with this. It's a bit finicky and noisy, so
this adds scripts/iwyu.py to make running it more convenient (but not
reliable enough to automate it in Travis).
This cleans up all reasonable include-what-you-use warnings and
reorganizes a few header files.
Signed-off-by: Omar Sandoval <osandov@osandov.com>
Commit 326107f054 ("libdrgn: add task_state_to_char() helper")
implemented task_state_to_char() in libdrgn so that it could be used in
commit 4780c7a266 ("libdrgn: stack_trace: prohibit unwinding stack of
running tasks"). As of commit eea5422546 ("libdrgn: make Linux kernel
stack unwinding more robust"), it is no longer used in libdrgn, so we
can translate it to Python. This removes a bunch of code and is more
useful as an example.
Signed-off-by: Omar Sandoval <osandov@osandov.com>
drgn was originally my side project, but for awhile now it's also been
my work project. Update the copyright headers to reflect this, and add a
copyright header to various files that were missing it.
Add a helper to get the state of a task (e.g., 'R', 'S', 'D'). This will
be used to make sure that a task is not running when getting a stack
trace, so implement it in libdrgn.
We'd like to be able to look up tasks by PID from libdrgn, but those
helpers are written in Python. Translate them to C and add some thin
bindings so we can use the same implementation from Python.
