X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fthreads%2Fthread.h;h=c4520580fcbca7b20bc1596eeb7bcc538db06d10;hb=476eef1e2009a13352732b0d41b37c426050eaac;hp=5cfbadfbfb303bc2fbb69ecf6a72e85732803dbc;hpb=6bae0ee083ed3ef0a1df7e892c6509e47a0ad2dc;p=pintos-anon

diff --git a/src/threads/thread.h b/src/threads/thread.h
index 5cfbadf..c452058 100644
--- a/src/threads/thread.h
+++ b/src/threads/thread.h
@@ -19,13 +19,18 @@ enum thread_status
 
 struct thread 
   {
+    /* These members are owned by the thread_*() functions. */
     enum thread_status status;          /* Thread state. */
     char name[16];                      /* Name (for debugging purposes). */
     uint8_t *stack;                     /* Saved stack pointer. */
     list_elem rq_elem;                  /* Run queue list element. */
+
 #ifdef USERPROG
-    struct addrspace addrspace;         /* Userland address space. */
+    /* These members are owned by the addrspace_*() functions. */
+    uint32_t *pagedir;                  /* Page directory. */
 #endif
+    
+    /* Marker to detect stack overflow. */
     unsigned magic;                     /* Always set to THREAD_MAGIC. */
   };