1/*
2 *   Copyright (c) International Business Machines Corp., 2001-2006
3 *
4 *   This program is free software;  you can redistribute it and/or modify
5 *   it under the terms of the GNU General Public License as published by
6 *   the Free Software Foundation; either version 2 of the License, or
7 *   (at your option) any later version.
8 *
9 *   This program is distributed in the hope that it will be useful,
10 *   but WITHOUT ANY WARRANTY;  without even the implied warranty of
11 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
12 *   the GNU General Public License for more details.
13 *
14 *   You should have received a copy of the GNU General Public License
15 *   along with this program;  if not, write to the Free Software
16 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18#ifndef _UTIL_H_
19#define _UTIL_H_
20
21#include "config.h"
22
23#include <sys/time.h>
24#include <sys/resource.h>
25
26#ifdef HAVE_SYS_VFS_H
27#include <sys/vfs.h>
28#endif
29#include <sys/statvfs.h>
30#include <unistd.h>
31#include <stdlib.h>
32#include <assert.h>
33#include <string.h>
34#include <pthread.h>
35
36
37void ffsb_sleep(unsigned secs);
38void *ffsb_malloc(size_t size);
39void *ffsb_realloc(void *ptr, size_t size);
40char *ffsb_strdup(const char *str);
41size_t ffsb_strnlen(const char *str, size_t maxlen);
42
43void ffsb_mkdir(char *dirname);
44void ffsb_getrusage(struct rusage *ru_self, struct rusage *ru_children);
45void ffsb_sync(void);
46void *ffsb_align_4k(void *ptr);
47char *ffsb_printsize(char *buf, double size, int bufsize);
48
49int ffsb_system(char *command);
50void ffsb_milli_sleep(unsigned time);
51void ffsb_micro_sleep(unsigned time);
52void ffsb_unbuffer_stdout(void);
53void ffsb_bench_gettimeofday(void);
54void ffsb_bench_getpid(void);
55
56uint64_t ffsb_get_filesize(char *name);
57
58typedef struct {
59	unsigned required_count;
60	unsigned current_count;
61	pthread_mutex_t plock;
62	pthread_cond_t pcond;
63} ffsb_barrier_t ;
64
65void ffsb_barrier_init(ffsb_barrier_t *fb, unsigned count);
66void ffsb_barrier_wait(ffsb_barrier_t *fb);
67
68double cpu_so_far(void);
69double time_so_far(void);
70double cpu_so_far_children(void);
71float getfsutil(char *dirname);
72uint64_t getfsutil_size(char *dirname);
73
74struct timeval tvsub(struct timeval t1, struct timeval t0);
75struct timeval tvadd(struct timeval t1, struct timeval t0);
76double tvtodouble(struct timeval *t);
77
78
79#define max(a, b) (((a) > (b)) ? (a) : (b))
80
81#ifndef timersub
82#define timersub(a, b, result)                                          \
83	do {           	                                                \
84		(result)->tv_sec = (a)->tv_sec - (b)->tv_sec;		\
85		(result)->tv_usec = (a)->tv_usec - (b)->tv_usec;	\
86									\
87		if ((result)->tv_usec < 0) {				\
88			(result)->tv_sec--;				\
89			(result)->tv_usec += 1000000;			\
90		}							\
91	} while (0)
92#endif /* timersub */
93
94#endif /* _UTIL_H_ */
95