feat: Futex

CHANGELOG.md

@@ -7,6 +7,8 @@ This project adheres to [Semantic Versioning](https://semver.org/).
 ### Added
 - Added `AT_EACCESS` to `AtFlags` on all platforms but android
   ([#1995](https://github.com/nix-rust/nix/pull/1995))
+- Added futex interface.
+  ([#1907](https://github.com/nix-rust/nix/pull/1907))
 - Add `PF_ROUTE` to `SockType` on macOS, iOS, all of the BSDs, Fuchsia, Haiku, Illumos.
   ([#1867](https://github.com/nix-rust/nix/pull/1867))
 - Added `nix::ucontext` module on `aarch64-unknown-linux-gnu`.

Cargo.toml

@@ -42,7 +42,7 @@ default = [
   "hostname", "inotify", "ioctl", "kmod", "mman", "mount", "mqueue",
   "net", "personality", "poll", "process", "pthread", "ptrace", "quota",
   "reboot", "resource", "sched", "signal", "socket", "term", "time",
-  "ucontext", "uio", "user", "zerocopy",
+  "ucontext", "uio", "user", "zerocopy", "futex"
 ]
 
 acct = []
@@ -77,6 +77,7 @@ ucontext = ["signal"]
 uio = []
 user = ["feature"]
 zerocopy = ["fs", "uio"]
+futex = []
 
 [dev-dependencies]
 assert-impl = "0.1"