oc_atomic.h File Reference

Platform-specific C implementation of atomic variables. More...

#include <stdint.h>

Macros
#define	OC_ATOMIC_COMPARE_AND_SWAP32(x, expected, desired, result)
#define	OC_ATOMIC_COMPARE_AND_SWAP8(x, expected, desired, result)    OC_ATOMIC_COMPARE_AND_SWAP32(x, expected, desired, result)
#define	OC_ATOMIC_DECREMENT32(x)   --(x)
#define	OC_ATOMIC_INCREMENT32(x)   ++(x)
#define	OC_ATOMIC_INT32_T   volatile int32_t
#define	OC_ATOMIC_INT8_T   volatile int8_t
#define	OC_ATOMIC_LOAD32(x)   (x)
#define	OC_ATOMIC_LOAD8(x)   OC_ATOMIC_LOAD32(x)
#define	OC_ATOMIC_NOT_SUPPORTED
#define	OC_ATOMIC_STORE32(x, val)   (x) = (val)
#define	OC_ATOMIC_STORE8(x, val)   OC_ATOMIC_STORE32(x, val)
#define	OC_ATOMIC_UINT32_T   volatile uint32_t
#define	OC_ATOMIC_UINT8_T   volatile uint8_t

Detailed Description

Platform-specific C implementation of atomic variables.

Author

Daniel Adam

Macro Definition Documentation

OC_ATOMIC_COMPARE_AND_SWAP32

#define OC_ATOMIC_COMPARE_AND_SWAP32	(		x,
			expected,
			desired,
			result
	)

Value:

  do {                                                                         \
    if ((x) == (expected)) {                                                   \
      (x) = (desired);                                                         \
      (result) = true;                                                         \
    } else {                                                                   \
      (expected) = (x);                                                        \
      (result) = false;                                                        \
    }                                                                          \
  } while (0)