gdb/remote.c: refactor pending fork status functions
In preparation for a following patch, refactor a few things that I did
find a bit awkward, and to make them a bit more reusable.
- Pass an inferior to kill_new_fork_children instead of a pid. That
allows iterating on only this inferior's threads and avoid further
filtering on the thread's pid.
- Change thread_pending_fork_status to return a non-nullptr value only
if the thread does have a pending fork status.
- Remove is_pending_fork_parent_thread, as one can just use
thread_pending_fork_status and check for nullptr.
- Replace is_pending_fork_parent with is_fork_status, which just
returns if the given target_waitkind if a fork or a vfork. Push
filtering on the pid to the callers, when it is necessary.
Change-Id: I0764ccc684d40f054e39df6fa5458cc4c5d1cd7b
1 file changed
