From 9f3ba4e37bfa83f4d459f1d128d53dcc32bb9e3f Mon Sep 17 00:00:00 2001
From: Tomoaki Kawada <i@yvt.jp>
Date: Sat, 11 Jul 2020 06:56:46 +0900
Subject: [PATCH] make the crate no-std (#4)

---
 Cargo.toml |  2 +-
 src/lib.rs | 12 ++++++++----
 2 files changed, 9 insertions(+), 5 deletions(-)

diff --git a/Cargo.toml b/Cargo.toml
index feb361b..4624817 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -3,7 +3,7 @@ name = "try-lock"
 version = "0.2.2" # remember to update html_root_url
 description = "A lightweight atomic lock."
 keywords = ["lock", "atomic"]
-categories = ["concurrency"]
+categories = ["concurrency", "no-std"]
 authors = ["Sean McArthur <sean@seanmonstar.com>"]
 license = "MIT"
 repository = "https://github.com/seanmonstar/try-lock"
diff --git a/src/lib.rs b/src/lib.rs
index 7c0feec..64d3ab8 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -2,6 +2,7 @@
 #![deny(missing_docs)]
 #![deny(missing_debug_implementations)]
 #![deny(warnings)]
+#![cfg_attr(not(test), no_std)]
 
 //! A light-weight lock guarded by an atomic boolean.
 //!
@@ -43,10 +44,13 @@
 //! assert_eq!(locked2.name, "Spanner Bundle");
 //! ```
 
-use std::cell::UnsafeCell;
-use std::fmt;
-use std::ops::{Deref, DerefMut};
-use std::sync::atomic::{AtomicBool, Ordering};
+#[cfg(test)]
+extern crate core;
+
+use core::cell::UnsafeCell;
+use core::fmt;
+use core::ops::{Deref, DerefMut};
+use core::sync::atomic::{AtomicBool, Ordering};
 
 /// A light-weight lock guarded by an atomic boolean.
 ///