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81 lines
2.2 KiB
C
81 lines
2.2 KiB
C
#ifndef HEADER_UTILS_H
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#define HEADER_UTILS_H
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#include <stdio.h>
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#include <string.h>
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#include <ctype.h>
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#include <assert.h>
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#include <sys/time.h>
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#define SECTOR_SIZE (512)
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#define GIGABYTES (1024 * 1024 * 1024)
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const char *adjust_unit(double *ptr_bytes);
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static inline int is_my_file(const char *filename)
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{
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return (strlen(filename) == 8) && isdigit(filename[0]) &&
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isdigit(filename[1]) && isdigit(filename[2]) &&
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isdigit(filename[3]) && (filename[4] == '.') &&
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(filename[5] == 'f') && (filename[6] == 'f') &&
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(filename[7] == 'f');
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}
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static inline void get_full_fn(char *full_fn, int len,
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const char *path, const char *filename)
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{
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assert(snprintf(full_fn, len, "%s/%s", path, filename) < len);
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}
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static inline long delay_ms(const struct timeval *t1, const struct timeval *t2)
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{
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return (t2->tv_sec - t1->tv_sec) * 1000 +
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(t2->tv_usec - t1->tv_usec) / 1000;
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}
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#ifdef APPLE_MAC
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/* For PATH_MAX. */
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#include <limits.h>
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#include <fcntl.h>
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static inline int fdatasync(int fd)
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{
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/* It isn't exactly the same thing, but it's the best available on
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* Macs, and it's enough to work.
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*/
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return fcntl(fd, F_FULLFSYNC);
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}
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/* Mac's kernel doesn't take advices from applications. */
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#define posix_fadvise(fd, offset, len, advice) 0
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/*
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* The following functions were copied from GNU Library C to make F3
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* more portable.
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*/
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/* Data structure for communication with thread safe versions. This
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* type is to be regarded as opaque. It's only exported because users
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* have to allocate objects of this type.
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*/
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struct drand48_data {
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unsigned short int __x[3]; /* Current state. */
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unsigned short int __old_x[3]; /* Old state. */
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unsigned short int __c; /* Additive const. in congruential formula. */
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unsigned short int __init; /* Flag for initializing. */
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unsigned long long int __a; /* Factor in congruential formula. */
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};
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/* Seed random number generator. */
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extern int srand48_r(long int __seedval, struct drand48_data *__buffer)
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__attribute__ ((nonnull(2)));
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/* Return non-negative, long integer in [0,2^31). */
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extern int lrand48_r(struct drand48_data *__restrict __buffer,
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long int *__restrict __result) __attribute__ ((nonnull(1, 2)));
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#endif /* APPLE_MAC */
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#endif /* HEADER_UTILS_H */
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