implement Send where applicable

src/arch/mod.rs

@@ -1,7 +1,10 @@
 // Copyright (c) 2015, edef <edef@edef.eu>
 // See the LICENSE file included in this distribution.
+use core::prelude::*;
 pub use self::imp::{Registers, STACK_ALIGN};
 
+unsafe impl Send for Registers {}
+
 mod common;
 
 #[cfg(target_arch = "x86_64")]

src/context.rs

@@ -13,6 +13,9 @@ pub struct Context<'a, Stack: stack::Stack> {
   _ref: PhantomData<&'a ()>
 }
 
+unsafe impl<'a, Stack> Send for Context<'a, Stack>
+  where Stack: stack::Stack + Send {}
+
 impl<'a, Stack> Context<'a, Stack> where Stack: stack::Stack {
   #[inline]
   pub unsafe fn new<F>(mut stack: Stack, f: F) -> Context<'a, Stack>

src/os/mod.rs

@@ -8,6 +8,9 @@ mod sys;
 
 pub struct StackSource;
 
+unsafe impl Send for StackSource {}
+unsafe impl Sync for StackSource {}
+
 #[allow(raw_pointer_derive)]
 #[derive(Debug)]
 pub struct Stack {
@@ -15,6 +18,8 @@ pub struct Stack {
   len: usize
 }
 
+unsafe impl Send for Stack {}
+
 impl stack::StackSource for StackSource {
   type Output = Stack;
   type Error = IoError;