[asan] Refactor thread creation bookkeeping
This is a pure refactoring change. It paves the way for OS-specific
implementations, such as Fuchsia's, that can do most of the
per-thread bookkeeping work in the creator thread before the new
thread actually starts. This model is simpler and cleaner, avoiding
some race issues that the interceptor code for thread creation has
to do for the existing OS-specific implementations.
Submitted on behalf of Roland McGrath.
Reviewers: vitalybuka, alekseyshl, kcc
Reviewed By: alekseyshl
Subscribers: phosek, filcab, llvm-commits, kubamracek
Differential Revision: https://reviews.llvm.org/D36385
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@310432 91177308-0d34-0410-b5e6-96231b3b80d8
5 files changed