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Add thread priority support.
[pintos-anon]
/
src
/
threads
/
thread.h
diff --git
a/src/threads/thread.h
b/src/threads/thread.h
index e844b5c2ec1a51033b668c89c1319f739b28c86b..0480293dc51d19c31daae2bde619c503a0d45b16 100644
(file)
--- a/
src/threads/thread.h
+++ b/
src/threads/thread.h
@@
-23,6
+23,11
@@
enum thread_status
typedef int tid_t;
#define TID_ERROR ((tid_t) -1) /* Error value for tid_t. */
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
/* A kernel thread or user process.
Each thread structure is stored in its own 4 kB page. The
@@
-86,6
+91,7
@@
struct thread
enum thread_status status; /* Thread state. */
char name[16]; /* Name (for debugging purposes). */
uint8_t *stack; /* Saved stack pointer. */
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. */
/* Shared between thread.c and synch.c. */
list_elem elem; /* List element. */
@@
-103,7
+109,7
@@
void thread_init (void);
void thread_start (void);
typedef void thread_func (void *aux);
void thread_start (void);
typedef void thread_func (void *aux);
-tid_t thread_create (const char *name, thread_func *, void *);
+tid_t thread_create (const char *name,
int priority,
thread_func *, void *);
#ifdef USERPROG
tid_t thread_execute (const char *filename);
#endif
#ifdef USERPROG
tid_t thread_execute (const char *filename);
#endif
@@
-117,9
+123,11
@@
void thread_exit (void) NO_RETURN;
void thread_yield (void);
void thread_block (void);
void thread_yield (void);
void thread_block (void);
-/* Th
ese functions will be implemented in project 1
. */
+/* Th
is function will be implemented in problem 1-2
. */
void thread_join (tid_t);
void thread_join (tid_t);
-void thread_set_priority (tid_t, int);
-int thread_get_priority (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 */
#endif /* threads/thread.h */