tree d1fae1edc7d418382ae3d2863753b38255edf9bb
parent 39d7ee9c8262d9cd3338735bf3e95649857375e5
author Bob Beck <bbe@google.com> 1684367015 -0600
committer Boringssl LUCI CQ <boringssl-scoped@luci-project-accounts.iam.gserviceaccount.com> 1697825001 +0000

Add support for fork detection via pthread_atfork()

This provides an alternative way for fork detection that can
be used if we are certain the platform does not have other ways
of cloning an address space in use that are not noticed by
pthread_atfork.

This supports using pthread_atfork for fork detection on
macOS, iOS, OpenBSD and FreeBSD. Linux continues to use MADVISE
for the generation number and fork detection.

Change-Id: I79fd7769477dc90bfe37229d2ff2e8c16898dff7
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/59906
Reviewed-by: David Benjamin <davidben@google.com>
Auto-Submit: Bob Beck <bbe@google.com>
Commit-Queue: Bob Beck <bbe@google.com>