threads.h

   1 #ifndef __THREADS_H__
   2 #define __THREADS_H__
   3
   4 #include <ucontext.h>
   5
   6 #include "libthreads.h"
   7
   8 #define THREAD_ID_T_NONE        -1
   9
  10 typedef enum thread_state {
  11         THREAD_CREATED,
  12         THREAD_RUNNING,
  13         THREAD_READY,
  14         THREAD_COMPLETED
  15 } thread_state;
  16
  17 class Thread {
  18 public:
  19         void * operator new(size_t size);
  20         void operator delete(void *ptr);
  21         Thread(thrd_t *t, void (*func)(), void *a);
  22         Thread(thrd_t *t);
  23         ~Thread();
  24         void complete();
  25
  26         static int swap(ucontext_t *ctxt, Thread *t);
  27         static int swap(Thread *t, ucontext_t *ctxt);
  28
  29         thread_state get_state() { return state; }
  30         void set_state(thread_state s) { state = s; }
  31         thread_id_t get_id();
  32         thrd_t get_thrd_t() { return *user_thread; }
  33 private:
  34         int create_context();
  35
  36         void (*start_routine)();
  37         void *arg;
  38         ucontext_t context;
  39         void *stack;
  40         thrd_t *user_thread;
  41         thread_id_t id;
  42         thread_state state;
  43 };
  44
  45 Thread * thread_current();
  46
  47 static inline thread_id_t thrd_to_id(thrd_t t)
  48 {
  49         return t;
  50 }
  51
  52 #endif /* __THREADS_H__ */