6b294d77e26c025af1cef723cf7e4bb7385521ec - llvm-project/libc

commit	6b294d77e26c025af1cef723cf7e4bb7385521ec	[log] [tgz]
author	Siva Chandra Reddy <sivachandra@google.com>	Tue Oct 04 06:43:59 2022 +0000
committer	Copybara-Service <copybara-worker@google.com>	Tue Oct 04 12:18:46 2022 -0700
tree	4ce4920e4944387522d37a6231afcaf20cfcd6eb
parent	3c97ad39620f7cf0d11cff63b0ca7ebe2e40374b [diff]

[libc] Add a minimal implementation of the POSIX fork function.

A very simple and minimal implementation of fork is added. Future
changes will add more functionality to satisfy POSIX and Linux
requirements.

An implementation of wait and a few support macros in sys/wait.h
have also been added to help with testing the fork function.

Reviewed By: lntue, michaelrj

Differential Revision: https://reviews.llvm.org/D135131

GitOrigin-RevId: e3638e83db086e77243d0673a4ce8a0b4b330d42

config/linux/api.td[diff]
config/linux/x86_64/entrypoints.txt[diff]
include/CMakeLists.txt[diff]
include/llvm-libc-macros/CMakeLists.txt[diff]
include/llvm-libc-macros/linux/CMakeLists.txt[diff]
include/llvm-libc-macros/linux/sys-wait-macros.h[Added - diff]
include/llvm-libc-macros/sys-wait-macros.h[Added - diff]
include/sys/wait.h.def[Added - diff]
spec/posix.td[diff]
src/sys/CMakeLists.txt[diff]
src/sys/wait/CMakeLists.txt[Added - diff]
src/sys/wait/linux/CMakeLists.txt[Added - diff]
src/sys/wait/linux/wait.cpp[Added - diff]
src/sys/wait/wait.h[Added - diff]
src/unistd/CMakeLists.txt[diff]
src/unistd/fork.h[Added - diff]
src/unistd/linux/CMakeLists.txt[diff]
src/unistd/linux/fork.cpp[Added - diff]
test/integration/src/CMakeLists.txt[diff]
test/integration/src/unistd/CMakeLists.txt[Added - diff]
test/integration/src/unistd/fork_test.cpp[Added - diff]

21 files changed

tree: 4ce4920e4944387522d37a6231afcaf20cfcd6eb