[all-commits] [llvm/llvm-project] 9f3854: [reland][libc] add epoll_wait functions (#79635)

[michaelrj-google via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 9f3854a01f878831c229db0eb5078fa9d56e60ff
      https://github.com/llvm/llvm-project/commit/9f3854a01f878831c229db0eb5078fa9d56e60ff
  Author: michaelrj-google <71531609+michaelrj-google at users.noreply.github.com>
  Date:   2024-01-30 (Tue, 30 Jan 2024)

  Changed paths:
    M libc/config/linux/aarch64/entrypoints.txt
    M libc/config/linux/aarch64/headers.txt
    M libc/config/linux/api.td
    M libc/config/linux/arm/entrypoints.txt
    M libc/config/linux/arm/headers.txt
    M libc/config/linux/riscv/entrypoints.txt
    M libc/config/linux/riscv/headers.txt
    M libc/config/linux/syscall_numbers.h.inc
    M libc/config/linux/x86_64/entrypoints.txt
    M libc/config/linux/x86_64/headers.txt
    M libc/include/CMakeLists.txt
    M libc/include/llvm-libc-types/CMakeLists.txt
    A libc/include/llvm-libc-types/struct_epoll_data.h
    A libc/include/llvm-libc-types/struct_epoll_event.h
    A libc/include/sys/epoll.h.def
    M libc/spec/gnu_ext.td
    M libc/spec/linux.td
    M libc/src/sys/CMakeLists.txt
    A libc/src/sys/epoll/CMakeLists.txt
    A libc/src/sys/epoll/epoll_pwait.h
    A libc/src/sys/epoll/epoll_pwait2.h
    A libc/src/sys/epoll/epoll_wait.h
    A libc/src/sys/epoll/linux/CMakeLists.txt
    A libc/src/sys/epoll/linux/epoll_pwait.cpp
    A libc/src/sys/epoll/linux/epoll_pwait2.cpp
    A libc/src/sys/epoll/linux/epoll_wait.cpp
    M libc/test/src/sys/CMakeLists.txt
    A libc/test/src/sys/epoll/CMakeLists.txt
    A libc/test/src/sys/epoll/linux/CMakeLists.txt
    A libc/test/src/sys/epoll/linux/epoll_pwait2_test.cpp
    A libc/test/src/sys/epoll/linux/epoll_pwait_test.cpp
    A libc/test/src/sys/epoll/linux/epoll_wait_test.cpp
    M utils/bazel/llvm-project-overlay/libc/BUILD.bazel
    A utils/bazel/llvm-project-overlay/libc/test/src/sys/epoll/BUILD.bazel

  Log Message:
  -----------
  [reland][libc] add epoll_wait functions (#79635)

The epoll_wait functions are syscall wrappers that were requested by
upstream users. This patch adds them, as well as their header and types.

The tests are currently incomplete since they require epoll_create to
properly test epoll_wait. That will be added in a followup patch since
this one is already very large.