os-mac.h revision 93bcfd20e37cef8cec350fe06d3a086724c9f257 
1#ifndef FIO_OS_APPLE_H
2#define FIO_OS_APPLE_H
3
4#define	FIO_OS	os_mac
5
6#include <errno.h>
7#include <fcntl.h>
8#include <sys/disk.h>
9#include <sys/sysctl.h>
10#include <sys/time.h>
11#include <unistd.h>
12#include <signal.h>
13#include <mach/mach_init.h>
14#include <machine/endian.h>
15#include <libkern/OSByteOrder.h>
16
17#include "../file.h"
18
19#ifndef CLOCK_MONOTONIC
20#define CLOCK_MONOTONIC 1
21#endif
22
23#ifndef CLOCK_REALTIME
24#define CLOCK_REALTIME 1
25#endif
26
27#define FIO_HAVE_POSIXAIO
28#define FIO_HAVE_CLOCK_MONOTONIC
29#define FIO_USE_GENERIC_RAND
30#define FIO_USE_GENERIC_INIT_RANDOM_STATE
31#define FIO_HAVE_GETTID
32#define FIO_HAVE_CHARDEV_SIZE
33
34#define OS_MAP_ANON		MAP_ANON
35
36#if defined(__LITTLE_ENDIAN__)
37#define FIO_LITTLE_ENDIAN
38#elif defined(__BIG_ENDIAN__)
39#define FIO_BIG_ENDIAN
40#else
41#error "Undefined byte order"
42#endif
43
44#define fio_swap16(x)	OSSwapInt16(x)
45#define fio_swap32(x)	OSSwapInt32(x)
46#define fio_swap64(x)	OSSwapInt64(x)
47
48/*
49 * OSX has a pitifully small shared memory segment by default,
50 * so default to a lower number of max jobs supported
51 */
52#define FIO_MAX_JOBS		128
53
54typedef off_t off64_t;
55
56/* OS X as of 10.6 doesn't have the timer_* functions.
57 * Emulate the functionality using setitimer and sigaction here
58 */
59
60#define MAX_TIMERS 64
61
62typedef unsigned int clockid_t;
63typedef unsigned int timer_t;
64
65struct itimerspec {
66	struct timespec it_value;
67	struct timespec it_interval;
68};
69
70static struct sigevent fio_timers[MAX_TIMERS];
71static unsigned int num_timers = 0;
72
73static void sig_alrm(int signum)
74{
75	union sigval sv;
76
77	for (int i = 0; i < num_timers; i++) {
78		if (fio_timers[i].sigev_notify_function == NULL)
79			continue;
80
81		if (fio_timers[i].sigev_notify == SIGEV_THREAD)
82			fio_timers[i].sigev_notify_function(sv);
83		else if (fio_timers[i].sigev_notify == SIGEV_SIGNAL)
84			kill(getpid(), fio_timers[i].sigev_signo);
85	}
86}
87
88static inline int timer_settime(timer_t timerid, int flags,
89				const struct itimerspec *value,
90				struct itimerspec *ovalue)
91{
92	struct sigaction sa;
93	struct itimerval tv;
94	struct itimerval tv_out;
95	int rc;
96
97	tv.it_interval.tv_sec = value->it_interval.tv_sec;
98	tv.it_interval.tv_usec = value->it_interval.tv_nsec / 1000;
99
100	tv.it_value.tv_sec = value->it_value.tv_sec;
101	tv.it_value.tv_usec = value->it_value.tv_nsec / 1000;
102
103	sa.sa_handler = sig_alrm;
104	sigemptyset(&sa.sa_mask);
105	sa.sa_flags = 0;
106
107	rc = sigaction(SIGALRM, &sa, NULL);
108
109	if (!rc)
110		rc = setitimer(ITIMER_REAL, &tv, &tv_out);
111
112	if (!rc && ovalue != NULL) {
113		ovalue->it_interval.tv_sec = tv_out.it_interval.tv_sec;
114		ovalue->it_interval.tv_nsec = tv_out.it_interval.tv_usec * 1000;
115		ovalue->it_value.tv_sec = tv_out.it_value.tv_sec;
116		ovalue->it_value.tv_nsec = tv_out.it_value.tv_usec * 1000;
117	}
118
119	return rc;
120}
121
122static inline int timer_delete(timer_t timer)
123{
124	return 0;
125}
126
127#define FIO_OS_DIRECTIO
128static inline int fio_set_odirect(int fd)
129{
130	if (fcntl(fd, F_NOCACHE, 1) == -1)
131		return errno;
132	return 0;
133}
134
135static inline int blockdev_size(struct fio_file *f, unsigned long long *bytes)
136{
137	uint32_t block_size;
138	uint64_t block_count;
139
140	if (ioctl(f->fd, DKIOCGETBLOCKCOUNT, &block_count) == -1)
141		return errno;
142	if (ioctl(f->fd, DKIOCGETBLOCKSIZE, &block_size) == -1)
143		return errno;
144
145	*bytes = block_size;
146	*bytes *= block_count;
147	return 0;
148}
149
150static inline int chardev_size(struct fio_file *f, unsigned long long *bytes)
151{
152	/*
153	 * Could be a raw block device, this is better than just assuming
154	 * we can't get the size at all.
155	 */
156	if (!blockdev_size(f, bytes))
157		return 0;
158
159	*bytes = -1ULL;
160	return 0;
161}
162
163static inline int blockdev_invalidate_cache(struct fio_file *f)
164{
165	return EINVAL;
166}
167
168static inline unsigned long long os_phys_mem(void)
169{
170	int mib[2] = { CTL_HW, HW_PHYSMEM };
171	unsigned long long mem;
172	size_t len = sizeof(mem);
173
174	sysctl(mib, 2, &mem, &len, NULL, 0);
175	return mem;
176}
177
178static inline int gettid(void)
179{
180	return mach_thread_self();
181}
182#endif
183