tree 19c7cfc3b5765adbf9d894483fc190db440db6de
parent de5d1b98c27428450b9a38ab5c2de479f59025af
author Thomas Van Lenten <thomasvl@google.com> 1603396726 -0400
committer Thomas Van Lenten <thomasvl@google.com> 1603726097 -0400

Switch to atomic for setting autocreated objects.

- Update semaphore comment to new scope.
- Use an atomic swap to avoid needing to use the semaphore.

This means the semaphore is create only when extension are auto created (less
memory usage).