[#32] Make Stack sendable

Author: zonyitoo

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "context"
-version = "1.0.0"
+version = "1.0.1"
 authors = ["Y. T. Chung <zonyitoo@gmail.com>", "Leonard Hecker <leonard@hecker.io>"]
 license = "MIT/Apache-2.0"
 repository = "https://github.com/zonyitoo/context-rs"

src/stack.rs

@@ -88,11 +88,7 @@ impl Stack {
  let page_size = sys::page_size();
  let min_stack_size = sys::min_stack_size();
  let max_stack_size = sys::max_stack_size();
- let add_shift = if protected {
- 1
- } else {
- 0
- };
+ let add_shift = if protected { 1 } else { 0 };
  let add = page_size << add_shift;
 
  if size < min_stack_size {
@@ -119,6 +115,8 @@ impl Stack {
  }
 }
 
+unsafe impl Send for Stack {}
+
 /// A very simple and straightforward implementation of `Stack`.
 ///
 /// Allocates stack space using virtual memory, whose pages will