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cosmopolitan/third_party/nsync/README.md
Justine Tunney b5cb71ab84
Use *NSYNC for POSIX threads locking APIs 
Condition variables, barriers, and r/w locks now work very well.
2022-09-11 11:04:50 -07:00

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*NSYNC

The THIRD_PARTY_NSYNC and LIBC_THREAD packages include source code from *NSYNC. Here's the latest upstream synchronization point:

git@github.com:google/nsync
ac5489682760393fe21bd2a8e038b528442412a7 (1.25.0)
Author: Mike Burrows <m3b@google.com>
Date:   Wed Jun 1 16:47:52 2022 -0700

NSYNC uses the Apache 2.0 license. We made the following local changes:

  • Write custom nsync_malloc_() so malloc() can use *NSYNC.

  • Rewrite futex() wrapper to support old Linux kernels and OpenBSD.

  • Normalize sources to Cosmopolitan style conventions; *NSYNC upstream supports dozens of compilers and operating systems, at compile-time. Since Cosmo solves portability at runtime instead, most of the build config toil has been removed, in order to help the NSYNC source code be more readable and hackable.