compiler/include/aros/types/spinlock_s.h

   1 #ifndef _AROS_TYPES_SPINLOCK_S_H_
   2 #define _AROS_TYPES_SPINLOCK_S_H_
   3
   4 #include <aros/cpu.h>
   5
   6 typedef struct {
   7     union
   8     {
   9         volatile struct {
  10             unsigned int        readcount : 24;
  11             unsigned int        _pad2 : 3;
  12             unsigned int        write : 1;
  13             unsigned int        _pad1 : 3;
  14             unsigned int        updating : 1;
  15         } slock;
  16         volatile unsigned char  block[4];
  17         volatile unsigned int   lock;
  18     };
  19 } __attribute__((__aligned__(128))) spinlock_t;
  20
  21 #define SPINLOCK_UNLOCKED               0
  22 #define SPINLOCKB_WRITE                 27
  23 #define SPINLOCKB_UPDATING              31
  24 #define SPINLOCKF_WRITE                 (1 << SPINLOCKB_WRITE)
  25 #define SPINLOCKF_UPDATING              (1 << SPINLOCKB_UPDATING)
  26
  27 #define SPINLOCK_INIT_UNLOCKED          { SPINLOCK_UNLOCKED }
  28 #define SPINLOCK_INIT_WRITE_LOCKED      { SPINLOCKF_WRITE }
  29 #define SPINLOCK_INIT_READ_LOCKED(n)    { n }
  30
  31 #define SPINLOCK_MODE_READ              0
  32 #define SPINLOCK_MODE_WRITE             1
  33
  34 #endif /* ! _AROS_TYPES_SPINLOCK_S_H_ */