os.h revision 93bcfd20e37cef8cec350fe06d3a086724c9f257 
1#ifndef FIO_OS_H
2#define FIO_OS_H
3
4#include <sys/types.h>
5#include <sys/socket.h>
6#include <fcntl.h>
7#include <pthread.h>
8#include <unistd.h>
9#include <stdlib.h>
10
11enum {
12	os_linux = 1,
13	os_aix,
14	os_freebsd,
15	os_hpux,
16	os_mac,
17	os_netbsd,
18	os_solaris,
19	os_windows,
20
21	os_nr,
22};
23
24#if defined(__linux__)
25#include "os-linux.h"
26#elif defined(__FreeBSD__)
27#include "os-freebsd.h"
28#elif defined(__NetBSD__)
29#include "os-netbsd.h"
30#elif defined(__sun__)
31#include "os-solaris.h"
32#elif defined(__APPLE__)
33#include "os-mac.h"
34#elif defined(_AIX)
35#include "os-aix.h"
36#elif defined(__hpux)
37#include "os-hpux.h"
38#elif defined(WIN32)
39#include "os-windows.h"
40#else
41#error "unsupported os"
42#endif
43
44#ifdef FIO_HAVE_LIBAIO
45#include <libaio.h>
46#endif
47
48#ifdef FIO_HAVE_POSIXAIO
49#include <aio.h>
50#ifndef FIO_OS_HAVE_AIOCB_TYPEDEF
51typedef struct aiocb os_aiocb_t;
52#endif
53#endif
54
55#ifdef FIO_HAVE_SGIO
56#include <linux/fs.h>
57#include <scsi/sg.h>
58#endif
59
60#ifndef FIO_HAVE_STRSEP
61#include "../lib/strsep.h"
62#endif
63
64#ifdef MSG_DONTWAIT
65#define OS_MSG_DONTWAIT	MSG_DONTWAIT
66#endif
67
68#ifndef FIO_HAVE_FADVISE
69#define posix_fadvise(fd, off, len, advice)	(0)
70
71#ifndef POSIX_FADV_DONTNEED
72#define POSIX_FADV_DONTNEED	(0)
73#define POSIX_FADV_SEQUENTIAL	(0)
74#define POSIX_FADV_RANDOM	(0)
75#endif
76#endif /* FIO_HAVE_FADVISE */
77
78#ifndef FIO_HAVE_CPU_AFFINITY
79#define fio_setaffinity(pid, mask)	(0)
80#define fio_getaffinity(pid, mask)	do { } while (0)
81#define fio_cpu_clear(mask, cpu)	do { } while (0)
82#define fio_cpuset_exit(mask)		(-1)
83typedef unsigned long os_cpu_mask_t;
84#endif
85
86#ifndef FIO_HAVE_IOPRIO
87#define ioprio_set(which, who, prio)	(0)
88#endif
89
90#ifndef FIO_HAVE_ODIRECT
91#define OS_O_DIRECT			0
92#else
93#define OS_O_DIRECT			O_DIRECT
94#endif
95
96#ifndef FIO_HAVE_HUGETLB
97#define SHM_HUGETLB			0
98#ifndef FIO_HUGE_PAGE
99#define FIO_HUGE_PAGE			0
100#endif
101#else
102#ifndef FIO_HUGE_PAGE
103#define FIO_HUGE_PAGE			4194304
104#endif
105#endif
106
107#ifndef FIO_O_NOATIME
108#define FIO_O_NOATIME			0
109#endif
110
111#ifndef OS_RAND_MAX
112#define OS_RAND_MAX			RAND_MAX
113#endif
114
115#ifdef FIO_HAVE_CLOCK_MONOTONIC
116#define FIO_TIMER_CLOCK CLOCK_MONOTONIC
117#else
118#define FIO_TIMER_CLOCK CLOCK_REALTIME
119#endif
120
121#ifndef FIO_HAVE_RAWBIND
122#define fio_lookup_raw(dev, majdev, mindev)	1
123#endif
124
125#ifndef FIO_PREFERRED_ENGINE
126#define FIO_PREFERRED_ENGINE	"sync"
127#endif
128
129#ifndef FIO_OS_PATH_SEPARATOR
130#define FIO_OS_PATH_SEPARATOR	"/"
131#endif
132
133#ifndef FIO_PREFERRED_CLOCK_SOURCE
134#define FIO_PREFERRED_CLOCK_SOURCE	CS_CGETTIME
135#endif
136
137#ifndef FIO_MAX_JOBS
138#define FIO_MAX_JOBS		2048
139#endif
140
141#ifndef FIO_OS_HAVE_SOCKLEN_T
142typedef socklen_t fio_socklen_t;
143#endif
144
145#ifdef FIO_USE_GENERIC_SWAP
146static inline uint16_t fio_swap16(uint16_t val)
147{
148	return (val << 8) | (val >> 8);
149}
150
151static inline uint32_t fio_swap32(uint32_t val)
152{
153	val = ((val & 0xff00ff00UL) >> 8) | ((val & 0x00ff00ffUL) << 8);
154
155	return (val >> 16) | (val << 16);
156}
157
158static inline uint64_t fio_swap64(uint64_t val)
159{
160	val = ((val & 0xff00ff00ff00ff00ULL) >> 8) |
161	      ((val & 0x00ff00ff00ff00ffULL) << 8);
162	val = ((val & 0xffff0000ffff0000ULL) >> 16) |
163	      ((val & 0x0000ffff0000ffffULL) << 16);
164
165	return (val >> 32) | (val << 32);
166}
167#endif
168
169#ifdef FIO_LITTLE_ENDIAN
170#define __le16_to_cpu(x)		(x)
171#define __le32_to_cpu(x)		(x)
172#define __le64_to_cpu(x)		(x)
173#define __cpu_to_le16(x)		(x)
174#define __cpu_to_le32(x)		(x)
175#define __cpu_to_le64(x)		(x)
176#else
177#define __le16_to_cpu(x)		fio_swap16(x)
178#define __le32_to_cpu(x)		fio_swap32(x)
179#define __le64_to_cpu(x)		fio_swap64(x)
180#define __cpu_to_le16(x)		fio_swap16(x)
181#define __cpu_to_le32(x)		fio_swap32(x)
182#define __cpu_to_le64(x)		fio_swap64(x)
183#endif
184
185#define le16_to_cpu(val) ({			\
186	uint16_t *__val = &(val);		\
187	__le16_to_cpu(*__val);			\
188})
189#define le32_to_cpu(val) ({			\
190	uint32_t *__val = &(val);		\
191	__le32_to_cpu(*__val);			\
192})
193#define le64_to_cpu(val) ({			\
194	uint64_t *__val = &(val);		\
195	__le64_to_cpu(*__val);			\
196})
197#define cpu_to_le16(val) ({			\
198	uint16_t *__val = &(val);		\
199	__cpu_to_le16(*__val);			\
200})
201#define cpu_to_le32(val) ({			\
202	uint32_t *__val = &(val);		\
203	__cpu_to_le32(*__val);			\
204})
205#define cpu_to_le64(val) ({			\
206	uint64_t *__val = &(val);		\
207	__cpu_to_le64(*__val);			\
208})
209
210#ifndef FIO_HAVE_BLKTRACE
211static inline int is_blktrace(const char *fname)
212{
213	return 0;
214}
215struct thread_data;
216static inline int load_blktrace(struct thread_data *td, const char *fname)
217{
218	return 1;
219}
220#endif
221
222#define FIO_DEF_CL_SIZE		128
223
224static inline int os_cache_line_size(void)
225{
226#ifdef FIO_HAVE_CL_SIZE
227	int ret = arch_cache_line_size();
228
229	if (ret <= 0)
230		return FIO_DEF_CL_SIZE;
231
232	return ret;
233#else
234	return FIO_DEF_CL_SIZE;
235#endif
236}
237
238#ifdef FIO_USE_GENERIC_BDEV_SIZE
239static inline int blockdev_size(struct fio_file *f, unsigned long long *bytes)
240{
241	off_t end;
242
243	*bytes = 0;
244
245	end = lseek(f->fd, 0, SEEK_END);
246	if (end < 0)
247		return errno;
248
249	*bytes = end;
250	return 0;
251}
252#endif
253
254#ifdef FIO_USE_GENERIC_RAND
255typedef unsigned int os_random_state_t;
256
257static inline void os_random_seed(unsigned long seed, os_random_state_t *rs)
258{
259	srand(seed);
260}
261
262static inline long os_random_long(os_random_state_t *rs)
263{
264	long val;
265
266	val = rand_r(rs);
267	return val;
268}
269#endif
270
271#ifdef FIO_USE_GENERIC_INIT_RANDOM_STATE
272extern void td_fill_rand_seeds(struct thread_data *td);
273/*
274 * Initialize the various random states we need (random io, block size ranges,
275 * read/write mix, etc).
276 */
277static inline int init_random_state(struct thread_data *td, unsigned long *rand_seeds, int size)
278{
279	int fd;
280
281	fd = open("/dev/urandom", O_RDONLY);
282	if (fd == -1) {
283		return 1;
284	}
285
286	if (read(fd, rand_seeds, size) < size) {
287		close(fd);
288		return 1;
289	}
290
291	close(fd);
292	td_fill_rand_seeds(td);
293	return 0;
294}
295#endif
296
297#ifndef FIO_HAVE_FS_STAT
298static inline unsigned long long get_fs_size(const char *path)
299{
300	return 0;
301}
302#endif
303
304#ifndef FIO_HAVE_CPU_ONLINE_SYSCONF
305static inline unsigned int cpus_online(void)
306{
307	return sysconf(_SC_NPROCESSORS_ONLN);
308}
309#endif
310
311#ifndef FIO_HAVE_GETTID
312static inline int gettid(void)
313{
314	return getpid();
315}
316#endif
317
318#endif
319