xroad_aux.h File Reference

#include "xroad_common_fwd.h"
#include <stdint.h>
#include <stdbool.h>
#include <sched.h>

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Macros
#define	xroad_likely(x)   __builtin_expect(!!(x), 1)
#define	xroad_unlikely(x)   __builtin_expect(!!(x), 0)
#define	xroad_cpu_pause()   __asm__ volatile("pause\n": : :"memory")
#define	xroad_fence()   __asm__ volatile("mfence": : :"memory")
#define	__dtor__(fun)   __attribute__((__cleanup__(fun)))
#define	__free_dtor__   __dtor__(free_destructor)
#define	xroad_min(a, b)
#define	xroad_max(a, b)
#define	xroad_dbl_cmp(lhs, rhs)

Functions
void	free_destructor (void *)
xroad_str_t	xroad_strerror (int32_t err)
bool	xroad_set_cpu_set (xroad_str_t cpus, cpu_set_t *cpu_set)

Detailed Description

Author

Dmitry S. Melnikov, dmitr.nosp@m.yme@.nosp@m.gmail.nosp@m..com

Macro Definition Documentation

xroad_dbl_cmp

#define xroad_dbl_cmp	(		lhs,
			rhs
	)

Value:

({                                                    \
   __typeof__(lhs) lhs1977_ = (lhs);                  \
   __typeof__(rhs) rhs1977_ = (rhs);                  \
   (fabs(lhs1977_ - rhs1977_) < XROAD_EPSILON) ? 0 :  \
   (lhs1977_ < rhs1977_ ? -1 : 1);  \
})

compare two doubles

Returns

0 - equal, <0 - less, >0 - greater

xroad_max

#define xroad_max	(		a,
			b
	)

Value:

({ __typeof__ (a) _a = (a);   \
    __typeof__ (b) _b = (b);  \
    _a > _b ? _a : _b;        \
})

find max among a and b

xroad_min

#define xroad_min	(		a,
			b
	)

Value:

({ __typeof__ (a) _a = (a);   \
    __typeof__ (b) _b = (b);  \
    _a < _b ? _a : _b;        \
})

find min among a and b

Function Documentation

xroad_set_cpu_set()

bool xroad_set_cpu_set	(	xroad_str_t	cpus,
		cpu_set_t *	cpu_set
	)

fill cpu_set with CPUs

Parameters

[in]	cpus	- list of CPUs starting from 0 "0,1,2,3"
[out]	cpu_set	- cpu set to fill

Returns

true - filled, else cpus has wrong format

xroad_strerror()

xroad_str_t xroad_strerror

(

int32_t

err

)

convert error code into string representation

Parameters

[in]

err

- error to convert

Returns

error string representation