rust/library/std/src/sys/sync/rwlock/mod.rs at dc7c2b686ce5c5e4c26a74bb0958e304b4e25757 · rust-lang/rust · GitHub

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cfg_select! {
    any(
        all(target_os = "windows", not(target_vendor = "win7")),
        target_os = "linux",
        target_vendor = "apple",
        target_os = "android",
        target_os = "freebsd",
        target_os = "openbsd",
        target_os = "dragonfly",
        target_os = "fuchsia",
        all(target_family = "wasm", target_feature = "atomics"),
        target_os = "hermit",
       target_os = "motor",
    ) => {
        mod futex;
        pub use futex::RwLock;
    }
    any(
        target_family = "unix",
        all(target_os = "windows", target_vendor = "win7"),
        all(target_vendor = "fortanix", target_env = "sgx"),
        target_os = "xous",
    ) => {
        mod queue;
        pub use queue::RwLock;
    }
    target_os = "solid_asp3" => {
        mod solid;
        pub use solid::RwLock;
    }
    target_os = "teeos" => {
        mod teeos;
        pub use teeos::RwLock;
    }
    _ => {
        mod no_threads;
        pub use no_threads::RwLock;
    }
}