ucp_utils.h File Reference

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Macros
#define	CHKERR_ACTION(_cond, _msg, _log, _action)
#define	CHKERR_JUMP(_cond, _msg, _log, _label)    CHKERR_ACTION(_cond, _msg, _log, goto _label)
#define	IS_POW2_OR_ZERO(_n)   !((_n) & ((_n)-1))
#define	IS_POW2(_n)   (((_n) > 0) && IS_POW2_OR_ZERO(_n))
#define	PADDING_TO_ALIGN(_n, _alignment)    (((_alignment) - (_n) % (_alignment)) % (_alignment))
#define	ALIGN_DOWN_POW2(_n, _alignment)   ((_n) & ~((_alignment)-1))
#define	ALIGN_UP_POW2(_n, _alignment)   ALIGN_DOWN_POW2((_n) + (_alignment)-1, _alignment)

Macro Definition Documentation

ALIGN_DOWN_POW2

#define ALIGN_DOWN_POW2	(		_n,
			_alignment
	)		((_n) & ~((_alignment)-1))

ALIGN_UP_POW2

#define ALIGN_UP_POW2	(		_n,
			_alignment
	)		ALIGN_DOWN_POW2((_n) + (_alignment)-1, _alignment)

CHKERR_ACTION

#define CHKERR_ACTION	(		_cond,
			_msg,
			_log,
			_action
	)

Value:

  do {                                                                                   \
    if(_cond) {                                                                          \
      _log.error() << _msg;                                                              \
      _action;                                                                           \
    }                                                                                    \
  } while(0)

CHKERR_JUMP

#define CHKERR_JUMP	(		_cond,
			_msg,
			_log,
			_label
	)		CHKERR_ACTION(_cond, _msg, _log, goto _label)

IS_POW2

#define IS_POW2

(

_n

)

(((_n) > 0) && IS_POW2_OR_ZERO(_n))

IS_POW2_OR_ZERO

#define IS_POW2_OR_ZERO

(

_n

)

!((_n) & ((_n)-1))

PADDING_TO_ALIGN

#define PADDING_TO_ALIGN	(		_n,
			_alignment
	)		(((_alignment) - (_n) % (_alignment)) % (_alignment))