#include <stdint.h>
+#ifdef __cplusplus
#include <vector>
+#include <boost/array.hpp>
#include <boost/utility.hpp>
#include <boost/unordered_map.hpp>
#include <boost/unordered_set.hpp>
+#endif
#include <xbt.h>
-#include "mc_private.h"
#include "mc_mmu.h"
-#ifndef MC_PAGE_SNAPSHOT_H
-#define MC_PAGE_SNAPSHOT_H
+#ifndef MC_PAGE_STORE_H
+#define MC_PAGE_STORE_H
+
+struct s_mc_pages_store;
+
+#ifdef __cplusplus
/** @brief Storage for snapshot memory pages
*
*
*/
struct s_mc_pages_store {
-private: // Types
+public: // Types
+#ifdef MC_PAGE_STORE_MD4
+ typedef boost::array<uint64_t,2> hash_type;
+#else
typedef uint64_t hash_type;
- typedef boost ::unordered_set<size_t> page_set_type;
+#endif
+private: // Types
+#ifdef MC_PAGE_STORE_MD4
+ // We are using a secure hash to identify a page.
+ // We assume there will not be any collision: we need to map a hash
+ // to a single page index.
+ typedef boost::unordered_map<hash_type, size_t> pages_map_type;
+#else
+ // We are using a cheap hash to index a page.
+ // We should expect collision and we need to associate multiple page indices
+ // to the same hash.
+ typedef boost::unordered_set<size_t> page_set_type;
typedef boost::unordered_map<hash_type, page_set_type> pages_map_type;
+#endif
private: // Fields:
- /** First page */
+ /** First page
+ *
+ * mc_page_store_get_page expects that this is the first field.
+ * */
void* memory_;
/** Number of available pages in virtual memory */
size_t capacity_;
#endif
+SG_BEGIN_DECL()
+
+typedef struct s_mc_pages_store s_mc_pages_store_t, * mc_pages_store_t;
+mc_pages_store_t mc_pages_store_new(void);
+void mc_pages_store_delete(mc_pages_store_t store);
+
+/**
+ */
+static inline __attribute__((always_inline))
+const void* mc_page_store_get_page(mc_pages_store_t page_store, size_t pageno)
+{
+ // This is page_store->memory_:
+ void* memory = *(void**)page_store;
+ return mc_page_from_number(memory, pageno);
+}
+
+SG_END_DECL()
+
+#endif
