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/*
* util.h
*
* Copyright (C) 2016 SUSE. All rights reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* Authors: Mark Fasheh <mfasheh@suse.de>
*/
#ifndef __UTIL_H__
#define __UTIL_H__
#include <stdlib.h>
#include <dirent.h>
#include <stdint.h>
#include <sys/time.h>
#include <unistd.h>
#include <uuid/uuid.h>
/* controlled by user options, turns pretty print on if true. */
extern int human_readable;
#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
/*
* Code for parsing and printing human readable numbers is taken from
* btrfs-progs/util.c and modified locally to suit my purposes.
*/
uint64_t parse_size(char *s);
int pretty_size_snprintf(uint64_t size, char *str, size_t str_bytes);
#define pretty_size(size) \
({ \
static __thread char _str[32]; \
(void)pretty_size_snprintf((size), _str, sizeof(_str)); \
_str; \
})
/* Trivial wrapper around gettimeofday */
struct elapsed_time {
struct timeval start;
struct timeval end;
const char *name;
double elapsed;
};
void record_start(struct elapsed_time *e, const char *name);
void record_end_print(struct elapsed_time *e);
int num_digits(unsigned long long num);
void get_num_cpus(unsigned int *nr_phys, unsigned int *nr_log);
/* Bump up maximum open file limit. */
int increase_limits(void);
#define _cleanup_(x) __attribute__((cleanup(x)))
static inline void freep(void *p)
{
free(*(void**) p);
}
static inline void closedirectory(DIR **p)
{
if (*p)
closedir(*p);
}
static inline void closefd(int *fd)
{
if (*fd >= 0)
close(*fd);
}
void debug_print_uuid(uuid_t uuid);
#endif /* __UTIL_H__ */
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