Add SPT Helper Functions: Insert, Get, Cleanup w/ G

src/userprog/process.c

@@ -24,6 +24,7 @@
 #include "threads/vaddr.h"
 #include "threads/synch.h"
 #include "devices/timer.h"
+#include "vm/page.h"
 #ifdef VM
 #include "vm/frame.h"
 #endif
@@ -364,6 +365,7 @@ process_exit (void)
 
   /* Clean up all open files */
   hash_destroy (&cur->open_files, fd_cleanup);
+  hash_destroy (&cur->pages, page_cleanup);
 
   /* Close the executable file, implicitly allowing it to be written to. */
   if (cur->exec_file != NULL)