Commit Graph

2 Commits (065f202d3021ed0a61dbb34be9bce2bc767dba10)

Author SHA1 Message Date
Matt Clay 9f899f9492
Require `from __future__ import annotations` (#81902) 2 years ago
Matt Davis 1424484be0
Prevent stdio deadlock in forked children (#79522)
* background threads writing to stdout/stderr can cause children to deadlock if a thread in the parent holds the internal lock on the BufferedWriter wrapper
* prevent writes to std handles during fork by monkeypatching stdout/stderr during display startup to require a mutex lock with fork(); this ensures no background threads can hold the lock during a fork operation
* add integration test that fails reliably on Linux without this fix
3 years ago