Improve get_fiber_manager_map_*() error reporting
authorPeter DeLong <pdelong@fb.com>
Fri, 16 Jun 2017 17:32:35 +0000 (10:32 -0700)
committerFacebook Github Bot <facebook-github-bot@users.noreply.github.com>
Fri, 16 Jun 2017 17:40:14 +0000 (10:40 -0700)
commit030e254e1189e4db305ff637781360b09e122bda
tree118f29ba16c2e9e290f0ef2c928b6cbdd9872d7c
parenta60bf0bb374f4b57c0f00cd862e2861e1f381ed0
Improve get_fiber_manager_map_*() error reporting

Summary:
get_fiber_manager_map_vevb() and get_fiber_manager_map_evb() don't
provide very useful feedback when called with an empty map (just the former) or
with a program that doesn't have debug symbols (both)

Reviewed By: andriigrynenko

Differential Revision: D5260114

fbshipit-source-id: c44b4e279e5c88dc08507b969339a4befc23d79b
folly/fibers/scripts/gdb.py