os-mac.h revision 0209e1e5a24979172596cd1e249b32eaba78969f 
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 void sig_alrm(int signum)
73{
74	union sigval sv;
75
76	for (int i = 0; i < num_timers; i++) {
77		if (fio_timers[i].sigev_notify_function == NULL)
78			continue;
79
80		if (fio_timers[i].sigev_notify == SIGEV_THREAD)
81			fio_timers[i].sigev_notify_function(sv);
82		else if (fio_timers[i].sigev_notify == SIGEV_SIGNAL)
83			kill(getpid(), fio_timers[i].sigev_signo);
84	}
85}
86
87static inline int timer_settime(timer_t timerid, int flags,
88				const struct itimerspec *value,
89				struct itimerspec *ovalue)
90{
91	struct sigaction sa;
92	struct itimerval tv;
93	struct itimerval tv_out;
94	int rc;
95
96	tv.it_interval.tv_sec = value->it_interval.tv_sec;
97	tv.it_interval.tv_usec = value->it_interval.tv_nsec / 1000;
98
99	tv.it_value.tv_sec = value->it_value.tv_sec;
100	tv.it_value.tv_usec = value->it_value.tv_nsec / 1000;
101
102	sa.sa_handler = sig_alrm;
103	sigemptyset(&sa.sa_mask);
104	sa.sa_flags = 0;
105
106	rc = sigaction(SIGALRM, &sa, NULL);
107
108	if (!rc)
109		rc = setitimer(ITIMER_REAL, &tv, &tv_out);
110
111	if (!rc && ovalue != NULL) {
112		ovalue->it_interval.tv_sec = tv_out.it_interval.tv_sec;
113		ovalue->it_interval.tv_nsec = tv_out.it_interval.tv_usec * 1000;
114		ovalue->it_value.tv_sec = tv_out.it_value.tv_sec;
115		ovalue->it_value.tv_nsec = tv_out.it_value.tv_usec * 1000;
116	}
117
118	return rc;
119}
120
121static inline int timer_delete(timer_t timer)
122{
123	return 0;
124}
125
126#define FIO_OS_DIRECTIO
127static inline int fio_set_odirect(int fd)
128{
129	if (fcntl(fd, F_NOCACHE, 1) == -1)
130		return errno;
131	return 0;
132}
133
134static inline int blockdev_size(struct fio_file *f, unsigned long long *bytes)
135{
136	uint32_t block_size;
137	uint64_t block_count;
138
139	if (ioctl(f->fd, DKIOCGETBLOCKCOUNT, &block_count) == -1)
140		return errno;
141	if (ioctl(f->fd, DKIOCGETBLOCKSIZE, &block_size) == -1)
142		return errno;
143
144	*bytes = block_size;
145	*bytes *= block_count;
146	return 0;
147}
148
149static inline int chardev_size(struct fio_file *f, unsigned long long *bytes)
150{
151	/*
152	 * Could be a raw block device, this is better than just assuming
153	 * we can't get the size at all.
154	 */
155	if (!blockdev_size(f, bytes))
156		return 0;
157
158	*bytes = -1ULL;
159	return 0;
160}
161
162static inline int blockdev_invalidate_cache(struct fio_file *f)
163{
164	return EINVAL;
165}
166
167static inline unsigned long long os_phys_mem(void)
168{
169	int mib[2] = { CTL_HW, HW_PHYSMEM };
170	unsigned long long mem;
171	size_t len = sizeof(mem);
172
173	sysctl(mib, 2, &mem, &len, NULL, 0);
174	return mem;
175}
176
177static inline int gettid(void)
178{
179	return mach_thread_self();
180}
181#endif
182