Fio 2.8
[fio.git] / os / os-mac.h
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1#ifndef FIO_OS_APPLE_H
2#define FIO_OS_APPLE_H
3
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4#define FIO_OS os_mac
5
2afd826b 6#include <errno.h>
7e8ad197 7#include <fcntl.h>
c64646f0 8#include <sys/disk.h>
2afd826b 9#include <sys/sysctl.h>
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10#include <sys/time.h>
11#include <unistd.h>
12#include <signal.h>
3dee087c 13#include <mach/mach_init.h>
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14#include <machine/endian.h>
15#include <libkern/OSByteOrder.h>
2afd826b 16
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17#include "../file.h"
18
53531370 19#define FIO_USE_GENERIC_RAND
93bcfd20 20#define FIO_USE_GENERIC_INIT_RANDOM_STATE
e8d588e4 21#define FIO_HAVE_GETTID
b42ffd19 22#define FIO_HAVE_CHARDEV_SIZE
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23
24#define OS_MAP_ANON MAP_ANON
25
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26#define fio_swap16(x) OSSwapInt16(x)
27#define fio_swap32(x) OSSwapInt32(x)
28#define fio_swap64(x) OSSwapInt64(x)
29
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30/*
31 * OSX has a pitifully small shared memory segment by default,
32 * so default to a lower number of max jobs supported
33 */
34#define FIO_MAX_JOBS 128
35
331539ac 36typedef off_t off64_t;
2afd826b 37
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38/* OS X as of 10.6 doesn't have the timer_* functions.
39 * Emulate the functionality using setitimer and sigaction here
40 */
41
42#define MAX_TIMERS 64
43
44typedef unsigned int clockid_t;
45typedef unsigned int timer_t;
46
47struct itimerspec {
48 struct timespec it_value;
49 struct timespec it_interval;
50};
51
52static struct sigevent fio_timers[MAX_TIMERS];
53static unsigned int num_timers = 0;
54
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55static void sig_alrm(int signum)
56{
57 union sigval sv;
58
59 for (int i = 0; i < num_timers; i++) {
60 if (fio_timers[i].sigev_notify_function == NULL)
61 continue;
62
63 if (fio_timers[i].sigev_notify == SIGEV_THREAD)
64 fio_timers[i].sigev_notify_function(sv);
65 else if (fio_timers[i].sigev_notify == SIGEV_SIGNAL)
66 kill(getpid(), fio_timers[i].sigev_signo);
67 }
68}
69
70static inline int timer_settime(timer_t timerid, int flags,
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71 const struct itimerspec *value,
72 struct itimerspec *ovalue)
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73{
74 struct sigaction sa;
75 struct itimerval tv;
76 struct itimerval tv_out;
77 int rc;
78
79 tv.it_interval.tv_sec = value->it_interval.tv_sec;
80 tv.it_interval.tv_usec = value->it_interval.tv_nsec / 1000;
81
82 tv.it_value.tv_sec = value->it_value.tv_sec;
83 tv.it_value.tv_usec = value->it_value.tv_nsec / 1000;
84
85 sa.sa_handler = sig_alrm;
86 sigemptyset(&sa.sa_mask);
87 sa.sa_flags = 0;
88
89 rc = sigaction(SIGALRM, &sa, NULL);
90
91 if (!rc)
92 rc = setitimer(ITIMER_REAL, &tv, &tv_out);
93
94 if (!rc && ovalue != NULL) {
95 ovalue->it_interval.tv_sec = tv_out.it_interval.tv_sec;
96 ovalue->it_interval.tv_nsec = tv_out.it_interval.tv_usec * 1000;
97 ovalue->it_value.tv_sec = tv_out.it_value.tv_sec;
98 ovalue->it_value.tv_nsec = tv_out.it_value.tv_usec * 1000;
99 }
100
101 return rc;
102}
103
104static inline int timer_delete(timer_t timer)
105{
106 return 0;
107}
108
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109#define FIO_OS_DIRECTIO
110static inline int fio_set_odirect(int fd)
111{
112 if (fcntl(fd, F_NOCACHE, 1) == -1)
113 return errno;
114 return 0;
115}
116
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117static inline int blockdev_size(struct fio_file *f, unsigned long long *bytes)
118{
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119 uint32_t block_size;
120 uint64_t block_count;
121
122 if (ioctl(f->fd, DKIOCGETBLOCKCOUNT, &block_count) == -1)
c64646f0 123 return errno;
79d73100 124 if (ioctl(f->fd, DKIOCGETBLOCKSIZE, &block_size) == -1)
c64646f0 125 return errno;
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126
127 *bytes = block_size;
128 *bytes *= block_count;
129 return 0;
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130}
131
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132static inline int chardev_size(struct fio_file *f, unsigned long long *bytes)
133{
134 /*
135 * Could be a raw block device, this is better than just assuming
136 * we can't get the size at all.
137 */
138 if (!blockdev_size(f, bytes))
139 return 0;
140
141 *bytes = -1ULL;
142 return 0;
143}
144
9b836561 145static inline int blockdev_invalidate_cache(struct fio_file *f)
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146{
147 return EINVAL;
148}
149
150static inline unsigned long long os_phys_mem(void)
151{
152 int mib[2] = { CTL_HW, HW_PHYSMEM };
153 unsigned long long mem;
154 size_t len = sizeof(mem);
155
156 sysctl(mib, 2, &mem, &len, NULL, 0);
157 return mem;
158}
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159
160static inline int gettid(void)
161{
162 return mach_thread_self();
163}
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164
165/*
166 * For some reason, there's no header definition for fdatasync(), even
167 * if it exists.
168 */
169extern int fdatasync(int fd);
170
2afd826b 171#endif