The AssetProcessor on Linux uses `inotify` to monitor for file updates.
The AssetProcessor also uses a `ProcessWatcher` to launch child
AssetBuilder processes. `ProcessWatcher` accomplishes this by calling
`fork()`, which duplicates the current process, then calling `exec()`.
The `fork()` call also appears to duplicate any inotify fds. This
results in the subprocess consuming duplicate inotify watches, which is
a limited system resource (Ubunut 20 defaults
`/proc/sys/fs/inotify/max_user_watches` to 65536). The AssetProcessor
still has issues with this max, but this should free up at least half of
the uses.
Signed-off-by: Chris Burel <burelc@amazon.com>
Chris Burel
9f9aa8f2a6