pthread_mutex_t

pub const pthread_mutex_t = switch (native_os) {
    .linux => extern struct {
        data: [data_len]u8 align(@alignOf(usize)) = @splat(0),

        const data_len = switch (native_abi) {
            .musl, .musleabi, .musleabihf => if (@sizeOf(usize) == 8) 40 else 24,
            .gnu, .gnuabin32, .gnuabi64, .gnueabi, .gnueabihf, .gnux32 => switch (native_arch) {
                .aarch64 => 48,
                .x86_64 => if (native_abi == .gnux32) 32 else 40,
                .mips64, .powerpc64, .powerpc64le, .sparc64 => 40,
                else => if (@sizeOf(usize) == 8) 40 else 24,
            },
            .android, .androideabi => if (@sizeOf(usize) == 8) 40 else 4,
            else => @compileError("unsupported ABI"),
        };
    },
    .driverkit, .ios, .maccatalyst, .macos, .tvos, .visionos, .watchos => extern struct {
        sig: c_long = 0x32AAABA7,
        data: [data_len]u8 = @splat(0),

        const data_len = if (@sizeOf(usize) == 8) 56 else 40;
    },
    .freebsd, .dragonfly, .openbsd => extern struct {
        inner: ?*anyopaque = null,
    },
    .hermit => extern struct {
        ptr: usize = maxInt(usize),
    },
    .netbsd => extern struct {
        magic: u32 = 0x33330003,
        errorcheck: padded_pthread_spin_t = 0,
        ceiling: padded_pthread_spin_t = 0,
        owner: usize = 0,
        waiters: ?*u8 = null,
        recursed: u32 = 0,
        spare2: ?*anyopaque = null,
    },
    .haiku => extern struct {
        flags: u32 = 0,
        lock: i32 = 0,
        unused: i32 = -42,
        owner: i32 = -1,
        owner_count: i32 = 0,
    },
    .illumos => extern struct {
        flag1: u16 = 0,
        flag2: u8 = 0,
        ceiling: u8 = 0,
        type: u16 = 0,
        magic: u16 = 0x4d58,
        lock: u64 = 0,
        data: u64 = 0,
    },
    .fuchsia => extern struct {
        data: [40]u8 align(@alignOf(usize)) = @splat(0),
    },
    .emscripten => extern struct {
        data: [24]u8 align(4) = @splat(0),
    },
    // https://github.com/SerenityOS/serenity/blob/b98f537f117b341788023ab82e0c11ca9ae29a57/Kernel/API/POSIX/sys/types.h#L68-L73
    .serenity => extern struct {
        lock: u32 = 0,
        owner: pthread_t = 0,
        level: c_int = 0,
        type: c_int = 0,
    },
    else => void,
}