tree efbff366b0b384afc15bc85a6d52868ea8f43078
parent daaff93464f79b9f1f06cac39d56125892280ee9
author Adam Langley <alangley@gmail.com> 1431716489 -0700
committer Adam Langley <agl@google.com> 1432149299 +0000

Add infrastructure for reference counts.

OpenSSL has traditionally done reference counting with |int|s and the
|CRYPTO_add| function. Unless a special callback is installed (rare),
this is implemented by doing the reference count operations under a
lock.

This change adds infrastructure for handling reference counts and uses
atomic operations when C11 support is available.

Change-Id: Ia023ce432319efd00f77a7340da27d16ee4b63c3
Reviewed-on: https://boringssl-review.googlesource.com/4771
Reviewed-by: Adam Langley <agl@google.com>