-#define PAGESIZE 4096
-
-/* If USE_MPROTECT_SNAPSHOT=1, then snapshot by using mmap() and mprotect()
- If USE_MPROTECT_SNAPSHOT=0, then snapshot by using fork() */
-#define USE_MPROTECT_SNAPSHOT 1
-
-/* Size of signal stack */
-#define SIGSTACKSIZE 16384
-
-void addMemoryRegionToSnapShot( void * ptr, unsigned int numPages );
-
-snapshot_id takeSnapshot( );
+void addMemoryRegionToSnapShot(void *ptr, unsigned int numPages);
+snapshot_id takeSnapshot();
+void rollBack(snapshot_id theSnapShot);