1 files changed, 187 insertions, 0 deletions
diff --git a/src/lib.rs b/src/lib.rs
new file mode 100755
index 0000000..b26d0b1
--- /dev/null
+++ b/src/lib.rs
@@ -0,0 +1,187 @@
+#![no_std]
+#![forbid(unsafe_op_in_unsafe_fn)]
+
+extern crate alloc;
+
+// tier 1: linux, windows, wasm w/o atomics
+// tier 2: mac os, android, ios, fuschia, illumos, freebsd, netbsd, solaris, redox, uefi, zkvm, embedded
+// not supported: dragonfly, wasm w/ atomics, hermit, teeos, sgx, solid, xous
+
+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;
+	} else if #[cfg(any(
+		target_os = "dragonfly",
+		all(target_family = "wasm", target_feature = "atomics"),
+		target_os = "hermit"
+	))] {
+		// merge with above when implemented
+	//} else if #[cfg(target_os = "fuchsia")] {
+	//	mod fuchsia;
+	//  mod unix;
+	} else if #[cfg(any(
+		target_family = "unix",
+	))] {
+		extern crate alloc;
+
+		mod lazy_box;
+
+		mod pthread;
+		//mod queue;
+	} else if #[cfg(target_os = "teeos")] {
+		extern crate alloc;
+
+		mod lazy_box;
+
+		mod pthread;
+		//mod teeos;
+	} else if #[cfg(all(target_os = "windows", target_vendor = "win7"))] {
+		mod windows7;
+		//mod queue;
+	} else if #[cfg(all(target_vendor = "fortanix", target_env = "sgx"))] {
+		//mod sgx;
+		//mod queue;
+	} else if #[cfg(target_os = "solid_asp3")] {
+		//mod itron;
+		//mod solid;
+	} else if #[cfg(target_os = "xous")] {
+		//mod xous;
+		//mod queue;
+	} else if #[cfg(any(
+		target_family = "wasm",
+		target_os = "uefi",
+		target_os = "zkvm"
+	))] {
+		mod no_threads;
+	} else if #[cfg(target_has_atomic = "8")] {
+		mod spin;
+	}
+}
+
+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",
+	))] {
+		pub use futex::Mutex;
+	} else if #[cfg(any(
+		target_os = "dragonfly",
+		all(target_family = "wasm", target_feature = "atomics"),
+		target_os = "hermit"
+	))] {
+		// merge with above when implemented
+	//} else if #[cfg(target_os = "fuchsia")] {
+	//	mod fuchsia;
+	//	pub use fuchsia::Mutex;
+	} else if #[cfg(any(
+		target_family = "unix",
+		//target_os = "teeos",
+	))] {
+		pub use pthread::Mutex;
+	} else if #[cfg(target_os = "teeos")] {
+		// merge with above when implemented
+	} else if #[cfg(all(target_os = "windows", target_vendor = "win7"))] {
+		pub use windows7::Mutex;
+	} else if #[cfg(all(target_vendor = "fortanix", target_env = "sgx"))] {
+		//pub use sgx::Mutex;
+	} else if #[cfg(target_os = "solid_asp3")] {
+	   //pub use itron::Mutex;
+	} else if #[cfg(target_os = "xous")] {
+		//pub use xous::Mutex;
+	} else if #[cfg(any(
+		target_family = "wasm",
+		target_os = "uefi",
+		target_os = "zkvm"
+	))] {
+		pub use no_threads::Mutex;
+	} else if #[cfg(all(target_os = "none", target_has_atomic = "8"))] {
+		pub use spin::Mutex;
+	}
+}
+
+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",
+		//target_os = "fuchsia",
+		//all(target_family = "wasm", target_feature = "atomics"),
+		//target_os = "hermit",
+	))] {
+		pub use futex::RwLock;
+	} else if #[cfg(any(
+		all(target_family = "wasm", target_feature = "atomics"),
+		target_os = "hermit"
+	))] {
+		// merge with above when implemented
+	} else if #[cfg(any(
+		target_family = "unix",
+		all(target_os = "windows", target_vendor = "win7"),
+		//all(target_vendor = "fortanix", target_env = "sgx"),
+		//target_os = "xous",
+	))] {
+		//pub use queue::RwLock;
+	} else if #[cfg(any(
+		all(target_vendor = "fortanix", target_env = "sgx"),
+		target_os = "xous",)
+	)] {
+		// merge with above when implemented
+	} else if #[cfg(target_os = "solid_asp3")] {
+		//pub use solid::RwLock;
+	} else if #[cfg(target_os = "teeos")] {
+		//pub use teeos::RwLock;
+	} else if #[cfg(any(
+		target_family = "wasm",
+		target_os = "uefi",
+		target_os = "zkvm"
+	))] {
+		pub use no_threads::RwLock;
+	} else if #[cfg(all(target_os = "none", target_has_atomic = "8"))] {
+		//pub use spin::RwLock;
+	}
+}
+
+unsafe impl lock_api::RawMutex for Mutex {
+	#[allow(clippy::declare_interior_mutable_const)]
+	const INIT: Self = Self::new();
+
+	type GuardMarker = lock_api::GuardNoSend;
+
+	#[no_panic::no_panic]
+	fn lock(&self) {
+		// safety: unsafe_lock is disabled
+		unsafe { self.lock() }
+	}
+
+	#[no_panic::no_panic]
+	fn try_lock(&self) -> bool {
+		unsafe { self.try_lock() }
+	}
+
+	#[no_panic::no_panic]
+	unsafe fn unlock(&self) {
+		unsafe { self.unlock() }
+	}
+
+	fn is_locked(&self) -> bool {
+		unsafe { self.is_locked() }
+	}
+}