std/sys/sync/mutex/
mod.rs

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cfg_if::cfg_if! {
    if #[cfg(any(
        all(target_os = "windows", not(target_vendor = "win7")),
        target_os = "linux",
        target_os = "android",
        target_os = "freebsd",
        target_os = "openbsd",
        target_os = "dragonfly",
        all(target_family = "wasm", target_feature = "atomics"),
        target_os = "hermit",
    ))] {
        mod futex;
        pub use futex::Mutex;
    } else if #[cfg(target_os = "fuchsia")] {
        mod fuchsia;
        pub use fuchsia::Mutex;
    } else if #[cfg(any(
        target_family = "unix",
        target_os = "teeos",
    ))] {
        mod pthread;
        pub use pthread::Mutex;
    } else if #[cfg(all(target_os = "windows", target_vendor = "win7"))] {
        mod windows7;
        pub use windows7::{Mutex, raw};
    } else if #[cfg(all(target_vendor = "fortanix", target_env = "sgx"))] {
        mod sgx;
        pub use sgx::Mutex;
    } else if #[cfg(target_os = "solid_asp3")] {
        mod itron;
        pub use itron::Mutex;
    } else if #[cfg(target_os = "xous")] {
        mod xous;
        pub use xous::Mutex;
    } else {
        mod no_threads;
        pub use no_threads::Mutex;
    }
}