tree e4950194519ea27d90234d5140afb5f3aafeefd1
parent b8b0e9f4856a75035873764a8b8a9b38a161abe7
author David Benjamin <davidben@google.com> 1574947936 -0500
committer CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org> 1575324858 +0000

Allocate small TLS read buffers inline.

Our TLS read patterns are always read(5); read(record_size); read(5);
read(record_size); ...;. Allocate the 5-byte reads inline in SSLBuffer.
This avoids bouncing on a 5-byte malloc to learn a socket is idle and
avoids calling malloc twice on each record.

This costs a few bytes but means we malloc once per record, rather than
twice per record + once each time the state machine is run while idle.

Change-Id: I4f6dafe4141cbb890b921a5fa8d528c1fb98a0b4
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/39004
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: Adam Langley <agl@google.com>