tree b3dbc9bbbe4eb0f0df4305f9965dcd3e37523a8f
parent 4685376b2b67fe5d2bfb13f31ef23844daea7288
author Adam Langley <alangley@gmail.com> 1530634794 -0700
committer CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org> 1530912337 +0000

Use a pool of |rand_state| objects.

Previously we used thread-local state objects in rand.c. However, for
applications with large numbers of threads, this can lead to excessive
memory usage.

This change causes us to maintain a mutex-protected pool of state
objects where the size of the pool equals the maximum concurrency of
|RAND_bytes|. This might lead to state objects bouncing between CPUs
more often, but should help the memory usage problem.

Change-Id: Ie83763d3bc139e64ac17bf7e015ad082b2f8a81a
Reviewed-on: https://boringssl-review.googlesource.com/29565
Commit-Queue: Adam Langley <agl@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
Reviewed-by: David Benjamin <davidben@google.com>