os.h revision 901ebe18bdca90032e2fe107a1410385da80d18b 
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
9#if defined(__linux__)
10#include "os-linux.h"
11#elif defined(__FreeBSD__)
12#include "os-freebsd.h"
13#elif defined(__NetBSD__)
14#include "os-netbsd.h"
15#elif defined(__sun__)
16#include "os-solaris.h"
17#elif defined(__APPLE__)
18#include "os-mac.h"
19#elif defined(_AIX)
20#include "os-aix.h"
21#elif defined(__hpux)
22#include "os-hpux.h"
23#elif defined(__CYGWIN__)
24#include "os-windows.h"
25#else
26#error "unsupported os"
27#endif
28
29#ifdef FIO_HAVE_LIBAIO
30#include <libaio.h>
31#endif
32
33#ifdef FIO_HAVE_POSIXAIO
34#include <aio.h>
35#ifndef FIO_OS_HAVE_AIOCB_TYPEDEF
36typedef struct aiocb os_aiocb_t;
37#endif
38#endif
39
40#ifdef FIO_HAVE_SGIO
41#include <linux/fs.h>
42#include <scsi/sg.h>
43#endif
44
45#ifndef FIO_HAVE_STRSEP
46#include "../lib/strsep.h"
47#endif
48
49#ifdef MSG_DONTWAIT
50#define OS_MSG_DONTWAIT	MSG_DONTWAIT
51#endif
52
53#ifndef FIO_HAVE_FADVISE
54#define posix_fadvise(fd, off, len, advice)	(0)
55
56#ifndef POSIX_FADV_DONTNEED
57#define POSIX_FADV_DONTNEED	(0)
58#define POSIX_FADV_SEQUENTIAL	(0)
59#define POSIX_FADV_RANDOM	(0)
60#endif
61#endif /* FIO_HAVE_FADVISE */
62
63#ifndef FIO_HAVE_CPU_AFFINITY
64#define fio_setaffinity(pid, mask)	(0)
65#define fio_getaffinity(pid, mask)	do { } while (0)
66#define fio_cpu_clear(mask, cpu)	do { } while (0)
67#define fio_cpuset_exit(mask)		(-1)
68typedef unsigned long os_cpu_mask_t;
69#endif
70
71#ifndef FIO_HAVE_IOPRIO
72#define ioprio_set(which, who, prio)	(0)
73#endif
74
75#ifndef FIO_HAVE_ODIRECT
76#define OS_O_DIRECT			0
77#else
78#define OS_O_DIRECT			O_DIRECT
79#endif
80
81#ifndef FIO_HAVE_HUGETLB
82#define SHM_HUGETLB			0
83#ifndef FIO_HUGE_PAGE
84#define FIO_HUGE_PAGE			0
85#endif
86#else
87#ifndef FIO_HUGE_PAGE
88#define FIO_HUGE_PAGE			4194304
89#endif
90#endif
91
92#ifndef FIO_O_NOATIME
93#define FIO_O_NOATIME			0
94#endif
95
96#ifndef OS_RAND_MAX
97#define OS_RAND_MAX			RAND_MAX
98#endif
99
100#ifdef FIO_HAVE_CLOCK_MONOTONIC
101#define FIO_TIMER_CLOCK CLOCK_MONOTONIC
102#else
103#define FIO_TIMER_CLOCK CLOCK_REALTIME
104#endif
105
106#ifndef FIO_HAVE_RAWBIND
107#define fio_lookup_raw(dev, majdev, mindev)	1
108#endif
109
110#ifndef FIO_PREFERRED_ENGINE
111#define FIO_PREFERRED_ENGINE	"sync"
112#endif
113
114#ifndef FIO_MAX_JOBS
115#define FIO_MAX_JOBS		2048
116#endif
117
118#ifdef FIO_USE_GENERIC_SWAP
119static inline uint16_t fio_swap16(uint16_t val)
120{
121	return (val << 8) | (val >> 8);
122}
123
124static inline uint32_t fio_swap32(uint32_t val)
125{
126	val = ((val & 0xff00ff00UL) >> 8) | ((val & 0x00ff00ffUL) << 8);
127
128	return (val >> 16) | (val << 16);
129}
130
131static inline uint64_t fio_swap64(uint64_t val)
132{
133	val = ((val & 0xff00ff00ff00ff00ULL) >> 8) |
134	      ((val & 0x00ff00ff00ff00ffULL) << 8);
135	val = ((val & 0xffff0000ffff0000ULL) >> 16) |
136	      ((val & 0x0000ffff0000ffffULL) << 16);
137
138	return (val >> 32) | (val << 32);
139}
140#endif
141
142#ifndef FIO_HAVE_BLKTRACE
143static inline int is_blktrace(const char *fname)
144{
145	return 0;
146}
147struct thread_data;
148static inline int load_blktrace(struct thread_data *td, const char *fname)
149{
150	return 1;
151}
152#endif
153
154#define FIO_DEF_CL_SIZE		128
155
156static inline int os_cache_line_size(void)
157{
158#ifdef FIO_HAVE_CL_SIZE
159	int ret = arch_cache_line_size();
160
161	if (ret <= 0)
162		return FIO_DEF_CL_SIZE;
163
164	return ret;
165#else
166	return FIO_DEF_CL_SIZE;
167#endif
168}
169
170#ifdef FIO_USE_GENERIC_BDEV_SIZE
171static inline int blockdev_size(struct fio_file *f, unsigned long long *bytes)
172{
173	off_t end;
174
175	*bytes = 0;
176
177	end = lseek(f->fd, 0, SEEK_END);
178	if (end < 0)
179		return errno;
180
181	*bytes = end;
182	return 0;
183}
184#endif
185
186#ifdef FIO_USE_GENERIC_RAND
187typedef unsigned int os_random_state_t;
188
189static inline void os_random_seed(unsigned long seed, os_random_state_t *rs)
190{
191	srand(seed);
192}
193
194static inline long os_random_long(os_random_state_t *rs)
195{
196	long val;
197
198	val = rand_r(rs);
199	return val;
200}
201#endif
202
203#ifndef FIO_HAVE_FS_STAT
204static inline unsigned long long get_fs_size(const char *path)
205{
206	return 0;
207}
208#endif
209
210#ifndef FIO_HAVE_CPU_ONLINE_SYSCONF
211static inline unsigned int cpus_online(void)
212{
213	return sysconf(_SC_NPROCESSORS_ONLN);
214}
215#endif
216
217#ifndef FIO_HAVE_GETTID
218static inline int gettid(void)
219{
220	return getpid();
221}
222#endif
223
224#endif
225