os.h revision cca84643cc10cd72b0b453ff92ccb8643ba51493 
1#ifndef FIO_OS_H
2#define FIO_OS_H
3
4#include <sys/types.h>
5#include <pthread.h>
6#include <unistd.h>
7#include <stdlib.h>
8
9enum {
10	os_linux = 1,
11	os_aix,
12	os_freebsd,
13	os_hpux,
14	os_mac,
15	os_netbsd,
16	os_solaris,
17	os_windows,
18
19	os_nr,
20};
21
22#if defined(__linux__)
23#include "os-linux.h"
24#elif defined(__FreeBSD__)
25#include "os-freebsd.h"
26#elif defined(__NetBSD__)
27#include "os-netbsd.h"
28#elif defined(__sun__)
29#include "os-solaris.h"
30#elif defined(__APPLE__)
31#include "os-mac.h"
32#elif defined(_AIX)
33#include "os-aix.h"
34#elif defined(__hpux)
35#include "os-hpux.h"
36#elif defined(__CYGWIN__)
37#include "os-windows.h"
38#else
39#error "unsupported os"
40#endif
41
42#ifdef FIO_HAVE_LIBAIO
43#include <libaio.h>
44#endif
45
46#ifdef FIO_HAVE_POSIXAIO
47#include <aio.h>
48#ifndef FIO_OS_HAVE_AIOCB_TYPEDEF
49typedef struct aiocb os_aiocb_t;
50#endif
51#endif
52
53#ifdef FIO_HAVE_SGIO
54#include <linux/fs.h>
55#include <scsi/sg.h>
56#endif
57
58#ifndef FIO_HAVE_STRSEP
59#include "../lib/strsep.h"
60#endif
61
62#ifdef MSG_DONTWAIT
63#define OS_MSG_DONTWAIT	MSG_DONTWAIT
64#endif
65
66#ifndef FIO_HAVE_FADVISE
67#define posix_fadvise(fd, off, len, advice)	(0)
68
69#ifndef POSIX_FADV_DONTNEED
70#define POSIX_FADV_DONTNEED	(0)
71#define POSIX_FADV_SEQUENTIAL	(0)
72#define POSIX_FADV_RANDOM	(0)
73#endif
74#endif /* FIO_HAVE_FADVISE */
75
76#ifndef FIO_HAVE_CPU_AFFINITY
77#define fio_setaffinity(pid, mask)	(0)
78#define fio_getaffinity(pid, mask)	do { } while (0)
79#define fio_cpu_clear(mask, cpu)	do { } while (0)
80#define fio_cpuset_exit(mask)		(-1)
81typedef unsigned long os_cpu_mask_t;
82#endif
83
84#ifndef FIO_HAVE_IOPRIO
85#define ioprio_set(which, who, prio)	(0)
86#endif
87
88#ifndef FIO_HAVE_ODIRECT
89#define OS_O_DIRECT			0
90#else
91#define OS_O_DIRECT			O_DIRECT
92#endif
93
94#ifndef FIO_HAVE_HUGETLB
95#define SHM_HUGETLB			0
96#ifndef FIO_HUGE_PAGE
97#define FIO_HUGE_PAGE			0
98#endif
99#else
100#ifndef FIO_HUGE_PAGE
101#define FIO_HUGE_PAGE			4194304
102#endif
103#endif
104
105#ifndef FIO_O_NOATIME
106#define FIO_O_NOATIME			0
107#endif
108
109#ifndef OS_RAND_MAX
110#define OS_RAND_MAX			RAND_MAX
111#endif
112
113#ifdef FIO_HAVE_CLOCK_MONOTONIC
114#define FIO_TIMER_CLOCK CLOCK_MONOTONIC
115#else
116#define FIO_TIMER_CLOCK CLOCK_REALTIME
117#endif
118
119#ifndef FIO_HAVE_RAWBIND
120#define fio_lookup_raw(dev, majdev, mindev)	1
121#endif
122
123#ifndef FIO_PREFERRED_ENGINE
124#define FIO_PREFERRED_ENGINE	"sync"
125#endif
126
127#ifndef FIO_MAX_JOBS
128#define FIO_MAX_JOBS		2048
129#endif
130
131#ifndef FIO_OS_HAVE_SOCKLEN_T
132typedef socklen_t fio_socklen_t;
133#endif
134
135#ifdef FIO_USE_GENERIC_SWAP
136static inline uint16_t fio_swap16(uint16_t val)
137{
138	return (val << 8) | (val >> 8);
139}
140
141static inline uint32_t fio_swap32(uint32_t val)
142{
143	val = ((val & 0xff00ff00UL) >> 8) | ((val & 0x00ff00ffUL) << 8);
144
145	return (val >> 16) | (val << 16);
146}
147
148static inline uint64_t fio_swap64(uint64_t val)
149{
150	val = ((val & 0xff00ff00ff00ff00ULL) >> 8) |
151	      ((val & 0x00ff00ff00ff00ffULL) << 8);
152	val = ((val & 0xffff0000ffff0000ULL) >> 16) |
153	      ((val & 0x0000ffff0000ffffULL) << 16);
154
155	return (val >> 32) | (val << 32);
156}
157#endif
158
159#ifdef FIO_LITTLE_ENDIAN
160#define __le16_to_cpu(x)		(x)
161#define __le32_to_cpu(x)		(x)
162#define __le64_to_cpu(x)		(x)
163#define __cpu_to_le16(x)		(x)
164#define __cpu_to_le32(x)		(x)
165#define __cpu_to_le64(x)		(x)
166#else
167#define __le16_to_cpu(x)		fio_swap16(x)
168#define __le32_to_cpu(x)		fio_swap32(x)
169#define __le64_to_cpu(x)		fio_swap64(x)
170#define __cpu_to_le16(x)		fio_swap16(x)
171#define __cpu_to_le32(x)		fio_swap32(x)
172#define __cpu_to_le64(x)		fio_swap64(x)
173#endif
174
175#define le16_to_cpu(val) ({			\
176	uint16_t *__val = &(val);		\
177	__le16_to_cpu(*__val);			\
178})
179#define le32_to_cpu(val) ({			\
180	uint32_t *__val = &(val);		\
181	__le32_to_cpu(*__val);			\
182})
183#define le64_to_cpu(val) ({			\
184	uint64_t *__val = &(val);		\
185	__le64_to_cpu(*__val);			\
186})
187#define cpu_to_le16(val) ({			\
188	uint16_t *__val = &(val);		\
189	__cpu_to_le16(*__val);			\
190})
191#define cpu_to_le32(val) ({			\
192	uint32_t *__val = &(val);		\
193	__cpu_to_le32(*__val);			\
194})
195#define cpu_to_le64(val) ({			\
196	uint64_t *__val = &(val);		\
197	__cpu_to_le64(*__val);			\
198})
199
200#ifndef FIO_HAVE_BLKTRACE
201static inline int is_blktrace(const char *fname)
202{
203	return 0;
204}
205struct thread_data;
206static inline int load_blktrace(struct thread_data *td, const char *fname)
207{
208	return 1;
209}
210#endif
211
212#define FIO_DEF_CL_SIZE		128
213
214static inline int os_cache_line_size(void)
215{
216#ifdef FIO_HAVE_CL_SIZE
217	int ret = arch_cache_line_size();
218
219	if (ret <= 0)
220		return FIO_DEF_CL_SIZE;
221
222	return ret;
223#else
224	return FIO_DEF_CL_SIZE;
225#endif
226}
227
228#ifdef FIO_USE_GENERIC_BDEV_SIZE
229static inline int blockdev_size(struct fio_file *f, unsigned long long *bytes)
230{
231	off_t end;
232
233	*bytes = 0;
234
235	end = lseek(f->fd, 0, SEEK_END);
236	if (end < 0)
237		return errno;
238
239	*bytes = end;
240	return 0;
241}
242#endif
243
244#ifdef FIO_USE_GENERIC_RAND
245typedef unsigned int os_random_state_t;
246
247static inline void os_random_seed(unsigned long seed, os_random_state_t *rs)
248{
249	srand(seed);
250}
251
252static inline long os_random_long(os_random_state_t *rs)
253{
254	long val;
255
256	val = rand_r(rs);
257	return val;
258}
259#endif
260
261#ifndef FIO_HAVE_FS_STAT
262static inline unsigned long long get_fs_size(const char *path)
263{
264	return 0;
265}
266#endif
267
268#ifndef FIO_HAVE_CPU_ONLINE_SYSCONF
269static inline unsigned int cpus_online(void)
270{
271	return sysconf(_SC_NPROCESSORS_ONLN);
272}
273#endif
274
275#ifndef FIO_HAVE_GETTID
276static inline int gettid(void)
277{
278	return getpid();
279}
280#endif
281
282#endif
283