Implement SCHED_RR

chopstx.h

@@ -27,11 +27,17 @@
  */
 
 typedef uint32_t chopstx_t;
+typedef uint8_t chopstx_prio_t;
 
 /* NOTE: This signature is different to PTHREAD's one.  */
 chopstx_t
-chopstx_create (uint8_t prio, uint32_t stack_addr, size_t stack_size,
+chopstx_create (uint32_t flags_and_prio,
+		uint32_t stack_addr, size_t stack_size,
 		void *(thread_entry) (void *), void *);
+#define CHOPSTX_PRIO_BITS 8
+#define CHOPSTX_DETACHED 0x10000
+#define CHOPSTX_SCHED_RR 0x20000
+
 
 void chopstx_usec_wait (uint32_t useconds);
 
@@ -39,7 +45,6 @@ struct chx_spinlock {
   /* nothing for uniprocessor.  */
 };
 
-typedef uint8_t chopstx_prio_t;
 typedef struct chx_mtx {
   struct {
     struct chx_thread *next, *prev;