From b85e63bc767bb382de64f54504151abbca6efeff Mon Sep 17 00:00:00 2001
From: David Li <li.davidm96@gmail.com>
Date: Sat, 9 Jan 2016 15:35:17 -0700
Subject: Implement shareable cache

---
 src/shareable_cache.rs | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/src/shareable_cache.rs b/src/shareable_cache.rs
index b6c6654..a8fee51 100644
--- a/src/shareable_cache.rs
+++ b/src/shareable_cache.rs
@@ -1,9 +1,13 @@
+use std::cell::RefCell;
+use std::rc::Rc;
+
 use rustv::isa;
 use rustv::memory::{MemoryInterface, Result, SharedMemory};
 
 /// A cache that can be used as two separate caches or one
 /// set-associative cache.
-struct ShareableCache<'a> {
+#[derive(Clone)]
+pub struct ShareableCache<'a> {
     // The idea is to create two separate ShareableCaches, one for
     // each player.
     primary: SharedMemory<'a>,
@@ -14,18 +18,19 @@ struct ShareableCache<'a> {
 
 impl<'a> ShareableCache<'a> {
     pub fn new(cache1: SharedMemory<'a>, cache2: SharedMemory<'a>)
-           -> (ShareableCache<'a>, ShareableCache<'a>) {
-        (ShareableCache {
+               -> (Rc<RefCell<ShareableCache<'a>>>,
+                   Rc<RefCell<ShareableCache<'a>>>) {
+        (Rc::new(RefCell::new(ShareableCache {
             primary: cache1.clone(),
             secondary: cache2.clone(),
             secondary_enabled: false,
             use_secondary: false,
-        }, ShareableCache {
+        })), Rc::new(RefCell::new(ShareableCache {
             primary: cache2.clone(),
             secondary: cache1.clone(),
             secondary_enabled: false,
             use_secondary: false,
-        })
+        })))
     }
 
     pub fn enable_secondary(&mut self) {
-- 
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