os-mac.h revision cca84643cc10cd72b0b453ff92ccb8643ba51493 
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_HAVE_GETTID
31#define FIO_HAVE_CHARDEV_SIZE
32
33#define OS_MAP_ANON		MAP_ANON
34
35#if defined(__LITTLE_ENDIAN__)
36#define FIO_LITTLE_ENDIAN
37#elif defined(__BIG_ENDIAN__)
38#define FIO_BIG_ENDIAN
39#else
40#error "Undefined byte order"
41#endif
42
43#define fio_swap16(x)	OSSwapInt16(x)
44#define fio_swap32(x)	OSSwapInt32(x)
45#define fio_swap64(x)	OSSwapInt64(x)
46
47/*
48 * OSX has a pitifully small shared memory segment by default,
49 * so default to a lower number of max jobs supported
50 */
51#define FIO_MAX_JOBS		128
52
53typedef off_t off64_t;
54
55/* OS X as of 10.6 doesn't have the timer_* functions.
56 * Emulate the functionality using setitimer and sigaction here
57 */
58
59#define MAX_TIMERS 64
60
61typedef unsigned int clockid_t;
62typedef unsigned int timer_t;
63
64struct itimerspec {
65	struct timespec it_value;
66	struct timespec it_interval;
67};
68
69static struct sigevent fio_timers[MAX_TIMERS];
70static unsigned int num_timers = 0;
71
72static inline int timer_create(clockid_t clockid, struct sigevent *restrict evp,
73				 timer_t *restrict timerid)
74{
75	int current_timer = num_timers;
76	fio_timers[current_timer] = *evp;
77	num_timers++;
78
79	*timerid = current_timer;
80	return 0;
81}
82
83static void sig_alrm(int signum)
84{
85	union sigval sv;
86
87	for (int i = 0; i < num_timers; i++) {
88		if (fio_timers[i].sigev_notify_function == NULL)
89			continue;
90
91		if (fio_timers[i].sigev_notify == SIGEV_THREAD)
92			fio_timers[i].sigev_notify_function(sv);
93		else if (fio_timers[i].sigev_notify == SIGEV_SIGNAL)
94			kill(getpid(), fio_timers[i].sigev_signo);
95	}
96}
97
98static inline int timer_settime(timer_t timerid, int flags,
99								const struct itimerspec *value, struct itimerspec *ovalue)
100{
101	struct sigaction sa;
102	struct itimerval tv;
103	struct itimerval tv_out;
104	int rc;
105
106	tv.it_interval.tv_sec = value->it_interval.tv_sec;
107	tv.it_interval.tv_usec = value->it_interval.tv_nsec / 1000;
108
109	tv.it_value.tv_sec = value->it_value.tv_sec;
110	tv.it_value.tv_usec = value->it_value.tv_nsec / 1000;
111
112	sa.sa_handler = sig_alrm;
113	sigemptyset(&sa.sa_mask);
114	sa.sa_flags = 0;
115
116	rc = sigaction(SIGALRM, &sa, NULL);
117
118	if (!rc)
119		rc = setitimer(ITIMER_REAL, &tv, &tv_out);
120
121	if (!rc && ovalue != NULL) {
122		ovalue->it_interval.tv_sec = tv_out.it_interval.tv_sec;
123		ovalue->it_interval.tv_nsec = tv_out.it_interval.tv_usec * 1000;
124		ovalue->it_value.tv_sec = tv_out.it_value.tv_sec;
125		ovalue->it_value.tv_nsec = tv_out.it_value.tv_usec * 1000;
126	}
127
128	return rc;
129}
130
131static inline int timer_delete(timer_t timer)
132{
133	return 0;
134}
135
136#define FIO_OS_DIRECTIO
137static inline int fio_set_odirect(int fd)
138{
139	if (fcntl(fd, F_NOCACHE, 1) == -1)
140		return errno;
141	return 0;
142}
143
144static inline int blockdev_size(struct fio_file *f, unsigned long long *bytes)
145{
146    uint64_t temp = 1;
147    if (ioctl(f->fd, DKIOCGETBLOCKCOUNT, bytes) == -1)
148		return errno;
149    if (ioctl(f->fd, DKIOCGETBLOCKSIZE, &temp) == -1)
150		return errno;
151    (*bytes) *= temp;
152    return 0;
153}
154
155static inline int chardev_size(struct fio_file *f, unsigned long long *bytes)
156{
157	/*
158	 * Could be a raw block device, this is better than just assuming
159	 * we can't get the size at all.
160	 */
161	if (!blockdev_size(f, bytes))
162		return 0;
163
164	*bytes = -1ULL;
165	return 0;
166}
167
168static inline int blockdev_invalidate_cache(struct fio_file *f)
169{
170	return EINVAL;
171}
172
173static inline unsigned long long os_phys_mem(void)
174{
175	int mib[2] = { CTL_HW, HW_PHYSMEM };
176	unsigned long long mem;
177	size_t len = sizeof(mem);
178
179	sysctl(mib, 2, &mem, &len, NULL, 0);
180	return mem;
181}
182
183static inline int gettid(void)
184{
185	return mach_thread_self();
186}
187#endif
188