commit	70ebeabfb8330f805a26dbb2f8af77fb0ab0c5f0	[log] [tgz]
author	Eric Fiselier <eric@efcs.ca>	Wed Apr 24 01:47:30 2019 +0000
committer	Eric Fiselier <eric@efcs.ca>	Wed Apr 24 01:47:30 2019 +0000
tree	3dd9117f8475ea78c3fecad2679bf798dc6371e8
parent	0b098754b73f3b96d00ecb1c7605760b11c90298 [diff]

Rewrite cxa guard implementation.

This patch does three main things:
  (1) It re-writes the cxa guard implementation to make it testable.
  (2) Adds support for recursive init detection on non-apple platforms.
  (3) It adds a futex based implementation.

The futex based implementation locks and notifies on a per-object basis, unlike the
current implementation which uses a global lock for all objects. Once this patch settles
I'll turn it on by default when supported.

llvm-svn: 359060

libcxxabi/src/cxa_guard.cpp[diff]
libcxxabi/src/cxa_guard_impl.h[Added - diff]
libcxxabi/src/include/atomic_support.h[diff]
libcxxabi/test/guard_test_basic.pass.cpp[Added - diff]
libcxxabi/test/guard_threaded_test.pass.cpp[Added - diff]

5 files changed

tree: 3dd9117f8475ea78c3fecad2679bf798dc6371e8

README.md

The LLVM Compiler Infrastructure

This directory and its subdirectories contain source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and runtime environments.