tree 1c7a3a03896ff992ce02a3741d1db0f8ef6e9b8a
parent 1f1cdc9f78fb6684fbb5942f3798af05be1fa797
author Mitch Phillips <31459023+hctim@users.noreply.github.com> 1580761551 -0800
committer Copybara-Service <copybara-worker@google.com> 1601491360 -0700

[GWP-ASan] Allow late initialisation if single-threaded.

Summary:
This patch allows for late initialisation of the GWP-ASan allocator. Previously, if late initialisation occurred, the sample counter was never updated, meaning we would end up having to wait for 2^32 allocations before getting a sampled allocation.

Now, we initialise the sampling mechanism in init() as well. We require init() to be called single-threaded, so this isn't a problem.

Reviewers: eugenis

Reviewed By: eugenis

Subscribers: merge_guards_bot, mgorny, #sanitizers, llvm-commits, cferris

Tags: #sanitizers, #llvm

Differential Revision: https://reviews.llvm.org/D73896

GitOrigin-RevId: 0d6fccb460e515a78c33dcd97cda459332ddd63a