From f2a90174bb36b9ad528e863ab34c02ebce002b02 Mon Sep 17 00:00:00 2001
From: Valentin <valentin@devling.xyz>
Date: Fri, 15 Jun 2018 18:57:24 +0200
Subject: Update for latest nightly 2018-06-09 (#70)

* Update for latest nightly 2018-06-09
* We now have a proper horizon os and sys modules in libstd
---
 ctr-std/src/sys/horizon/thread_local.rs | 71 +++++++++++++++++++++++++++++++++
 1 file changed, 71 insertions(+)
 create mode 100644 ctr-std/src/sys/horizon/thread_local.rs

(limited to 'ctr-std/src/sys/horizon/thread_local.rs')

diff --git a/ctr-std/src/sys/horizon/thread_local.rs b/ctr-std/src/sys/horizon/thread_local.rs
new file mode 100644
index 0000000..7c9c1fc
--- /dev/null
+++ b/ctr-std/src/sys/horizon/thread_local.rs
@@ -0,0 +1,71 @@
+// Copyright 2016 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+#![allow(dead_code)] // not used on all platforms
+
+use collections::BTreeMap;
+use ptr;
+use sync::atomic::{AtomicUsize, ATOMIC_USIZE_INIT, Ordering};
+
+pub type Key = usize;
+
+type Dtor = unsafe extern fn(*mut u8);
+
+static NEXT_KEY: AtomicUsize = ATOMIC_USIZE_INIT;
+
+static mut KEYS: *mut BTreeMap<Key, Option<Dtor>> = ptr::null_mut();
+
+#[thread_local]
+static mut LOCALS: *mut BTreeMap<Key, *mut u8> = ptr::null_mut();
+
+unsafe fn keys() -> &'static mut BTreeMap<Key, Option<Dtor>> {
+    if KEYS == ptr::null_mut() {
+        KEYS = Box::into_raw(Box::new(BTreeMap::new()));
+    }
+    &mut *KEYS
+}
+
+unsafe fn locals() -> &'static mut BTreeMap<Key, *mut u8> {
+    if LOCALS == ptr::null_mut() {
+        LOCALS = Box::into_raw(Box::new(BTreeMap::new()));
+    }
+    &mut *LOCALS
+}
+
+#[inline]
+pub unsafe fn create(dtor: Option<Dtor>) -> Key {
+    let key = NEXT_KEY.fetch_add(1, Ordering::SeqCst);
+    keys().insert(key, dtor);
+    key
+}
+
+#[inline]
+pub unsafe fn get(key: Key) -> *mut u8 {
+    if let Some(&entry) = locals().get(&key) {
+        entry
+    } else {
+        ptr::null_mut()
+    }
+}
+
+#[inline]
+pub unsafe fn set(key: Key, value: *mut u8) {
+    locals().insert(key, value);
+}
+
+#[inline]
+pub unsafe fn destroy(key: Key) {
+    keys().remove(&key);
+}
+
+#[inline]
+pub fn requires_synchronized_create() -> bool {
+    false
+}
\ No newline at end of file
-- 
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