tree 9e2ba518b5d14aeaa8db3d69991e5f4298384200
parent fb2497136b7a44e2e973368c03fae0d41a355c9b
author Michał Górny <mgorny@moritz.systems> 1618309284 +0200
committer Copybara-Service <copybara-worker@google.com> 1618358568 -0700

Reland "[lldb] [Process] Watch for fork/vfork notifications" for FreeBSD

The original commit was reverted because of the problems it introduced
on Linux.  However, FreeBSD should not be affected, so restore that part
and we will address Linux separately.

While at it, remove the dbreg hack as the underlying issue has been
fixed in the FreeBSD kernel and the problem is unlikely to happen
in real life use anyway.

Differential Revision: https://reviews.llvm.org/D98822

GitOrigin-RevId: 63d75641054afb0fe43928e9430a2bb92f09e121