Print statistics at power off.

[pintos-anon] / src / threads / thread.h

diff --git a/src/threads/thread.h b/src/threads/thread.h
index 248f1d4539663dfa843ef0e5aac9d6ece28c5842..c0551273d80b5927ad0f41f76f94ca598a9de9b7 100644 (file)
--- a/src/threads/thread.h
+++ b/src/threads/thread.h
@@ -5,10 +5,6 @@
 #include <list.h>
 #include <stdint.h>
 
-#ifdef USERPROG
-#include "userprog/addrspace.h"
-#endif
-
 /* States in a thread's life cycle. */
 enum thread_status
   {
@@ -18,6 +14,16 @@ enum thread_status
     THREAD_DYING        /* About to be destroyed. */
   };
 
+/* Thread identifier type.
+   You can redefine this to whatever type you like. */
+typedef int tid_t;
+#define TID_ERROR ((tid_t) -1)          /* Error value for tid_t. */
+
+/* Thread priorities. */
+#define PRI_MIN 0                       /* Lowest priority. */
+#define PRI_DEFAULT 29                  /* Default priority. */
+#define PRI_MAX 59                      /* Highest priority. */
+
 /* A kernel thread or user process.
 
    Each thread structure is stored in its own 4 kB page.  The
@@ -76,40 +82,47 @@ enum thread_status
    blocked state is on a semaphore wait list. */
 struct thread
   {
-    /* These members are owned by the thread_*() functions. */
+    /* Owned by thread.c. */
+    tid_t tid;                          /* Thread identifier. */
     enum thread_status status;          /* Thread state. */
     char name[16];                      /* Name (for debugging purposes). */
     uint8_t *stack;                     /* Saved stack pointer. */
+    int priority;                       /* Priority. */
+
+    /* Shared between thread.c and synch.c. */
     list_elem elem;                     /* List element. */
 
 #ifdef USERPROG
-    /* These members are owned by the addrspace_*() functions. */
+    /* Owned by userprog/process.c. */
     uint32_t *pagedir;                  /* Page directory. */
 #endif
 
-    /* Marker to detect stack overflow. */
-    unsigned magic;                     /* Always set to THREAD_MAGIC. */
+    /* Owned by thread.c */
+    unsigned magic;                     /* Detects stack overflow. */
   };
 
 void thread_init (void);
 void thread_start (void);
+void thread_tick (void);
+void thread_print_stats (void);
 
 typedef void thread_func (void *aux);
-struct thread *thread_create (const char *name, thread_func *, void *);
-#ifdef USERPROG
-bool thread_execute (const char *filename);
-#endif
+tid_t thread_create (const char *name, int priority, thread_func *, void *);
 
 void thread_unblock (struct thread *);
-const char *thread_name (struct thread *);
 
 struct thread *thread_current (void);
+tid_t thread_tid (void);
+const char *thread_name (void);
 void thread_exit (void) NO_RETURN;
 void thread_yield (void);
 void thread_block (void);
 
-void thread_join (struct thread *);
-void thread_set_priority (struct thread *, int);
-int thread_get_priority (const struct thread *);
+/* This function will be implemented in problem 1-2. */
+void thread_join (tid_t);
+
+/* These functions will be implemented in problem 1-3. */
+void thread_set_priority (int);
+int thread_get_priority (void);
 
 #endif /* threads/thread.h */