libatomic.h

   1 /** @file libatomic.h
   2  *  @brief Basic atomic operations to be exposed to user program.
   3  */
   4
   5 #ifndef __LIBATOMIC_H__
   6 #define __LIBATOMIC_H__
   7
   8 #ifdef __cplusplus
   9 extern "C" {
  10 #endif
  11
  12         /** @brief The memory orders specified by the C11/C++11 memory models */
  13         typedef enum memory_order {
  14                 memory_order_relaxed,
  15                 memory_order_consume,
  16                 memory_order_acquire,
  17                 memory_order_release,
  18                 memory_order_acq_rel,
  19                 memory_order_seq_cst
  20         } memory_order;
  21
  22         typedef struct atomic_object {
  23                 int value;
  24         } atomic_int;
  25
  26         void atomic_store_explicit(struct atomic_object *obj, int value, memory_order order);
  27 #define atomic_store(A, B) atomic_store_explicit((A), (B), memory_order_seq_cst)
  28
  29         int atomic_load_explicit(struct atomic_object *obj, memory_order order);
  30 #define atomic_load(A) atomic_load_explicit((A), memory_order_seq_cst)
  31
  32         void atomic_init(struct atomic_object *obj, int value);
  33
  34 #ifdef __cplusplus
  35 }
  36 #endif
  37
  38 #endif /* __LIBATOMIC_H__ */