Question: Multiple users doing push at the same time

[Kelly O'Hair]

Question: How does Mercurial handle multiple users doing an 'hg push' at
the same time to the same repository?

I guess this question may also apply to anyone doing an 'hg pull' in the
middle of another user doing an 'hg push'.

Teamware used a file Codemgr_wsdata/locks to track who had a lock on
the workspace during any change to the workspace, and would prevent
the appropriate activities that could cause the workspace to become
corrupted. Reporting back that user soandso had a lock on the workspace
since suchandsuch time.

I looked on the website but didn't see any details on this.

-kto