Commit Graph

1 Commits (96f7fd5539f6124004fecef8f7110d4965686872)

Author SHA1 Message Date
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
2 years ago