[fio.git] / os / os-android.h

#ifndef FIO_OS_ANDROID_H
#define FIO_OS_ANDROID_H

#define	FIO_OS	os_android

#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/uio.h>
#include <sys/syscall.h>
#include <sys/sysmacros.h>
#include <sys/vfs.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <sched.h>
#include <linux/unistd.h>
#include <linux/major.h>
#include <asm/byteorder.h>

#include "./os-linux-syscall.h"
#include "binject.h"
#include "../file.h"

#ifndef __has_builtin         // Optional of course.
  #define __has_builtin(x) 0  // Compatibility with non-clang compilers.
#endif

#define FIO_HAVE_DISK_UTIL
#define FIO_HAVE_IOSCHED_SWITCH
#define FIO_HAVE_IOPRIO
#define FIO_HAVE_IOPRIO_CLASS
#define FIO_HAVE_ODIRECT
#define FIO_HAVE_HUGETLB
#define FIO_HAVE_BLKTRACE
#define FIO_HAVE_CL_SIZE
#define FIO_HAVE_CGROUPS
#define FIO_HAVE_FS_STAT
#define FIO_HAVE_TRIM
#define FIO_HAVE_GETTID
#define FIO_USE_GENERIC_INIT_RANDOM_STATE
#define FIO_HAVE_E4_ENG
#define FIO_HAVE_BYTEORDER_FUNCS
#define FIO_HAVE_MMAP_HUGE
#define FIO_NO_HAVE_SHM_H

#define OS_MAP_ANON		MAP_ANONYMOUS

#ifndef POSIX_MADV_DONTNEED
#define posix_madvise   madvise
#define POSIX_MADV_DONTNEED MADV_DONTNEED
#define POSIX_MADV_SEQUENTIAL	MADV_SEQUENTIAL
#define POSIX_MADV_RANDOM	MADV_RANDOM
#endif

#ifdef MADV_REMOVE
#define FIO_MADV_FREE	MADV_REMOVE
#endif
#ifndef MAP_HUGETLB
#define MAP_HUGETLB 0x40000 /* arch specific */
#endif

#ifndef CONFIG_NO_SHM
/*
 * Bionic doesn't support SysV shared memeory, so implement it using ashmem
 */
#include <stdio.h>
#include <linux/ashmem.h>
#include <linux/shm.h>
#define shmid_ds shmid64_ds
#define SHM_HUGETLB    04000

#define ASHMEM_DEVICE	"/dev/ashmem"

static inline int shmctl(int __shmid, int __cmd, struct shmid_ds *__buf)
{
	int ret=0;
	if (__cmd == IPC_RMID)
	{
		int length = ioctl(__shmid, ASHMEM_GET_SIZE, NULL);
		struct ashmem_pin pin = {0 , length};
		ret = ioctl(__shmid, ASHMEM_UNPIN, &pin);
		close(__shmid);
	}
	return ret;
}

static inline int shmget(key_t __key, size_t __size, int __shmflg)
{
	int fd,ret;
	char keybuf[11];

	fd = open(ASHMEM_DEVICE, O_RDWR);
	if (fd < 0)
		return fd;

	sprintf(keybuf,"%d",__key);
	ret = ioctl(fd, ASHMEM_SET_NAME, keybuf);
	if (ret < 0)
		goto error;

	/* Stores size in first 8 bytes, allocate extra space */
	ret = ioctl(fd, ASHMEM_SET_SIZE, __size + sizeof(uint64_t));
	if (ret < 0)
		goto error;

	return fd;

error:
	close(fd);
	return ret;
}

static inline void *shmat(int __shmid, const void *__shmaddr, int __shmflg)
{
	size_t size = ioctl(__shmid, ASHMEM_GET_SIZE, NULL);
	/* Needs to be 8-byte aligned to prevent SIGBUS on 32-bit ARM */
	uint64_t *ptr = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, __shmid, 0);
	/* Save size at beginning of buffer, for use with munmap */
	*ptr = size;
	return ptr + 1;
}

static inline int shmdt (const void *__shmaddr)
{
	/* Find mmap size which we stored at the beginning of the buffer */
	uint64_t *ptr = (uint64_t *)__shmaddr - 1;
	size_t size = *ptr;
	return munmap(ptr, size);
}
#endif

#define SPLICE_DEF_SIZE	(64*1024)

enum {
	IOPRIO_CLASS_NONE,
	IOPRIO_CLASS_RT,
	IOPRIO_CLASS_BE,
	IOPRIO_CLASS_IDLE,
};

enum {
	IOPRIO_WHO_PROCESS = 1,
	IOPRIO_WHO_PGRP,
	IOPRIO_WHO_USER,
};

#define IOPRIO_BITS		16
#define IOPRIO_CLASS_SHIFT	13

#define IOPRIO_MIN_PRIO		0	/* highest priority */
#define IOPRIO_MAX_PRIO		7	/* lowest priority */

#define IOPRIO_MIN_PRIO_CLASS	0
#define IOPRIO_MAX_PRIO_CLASS	3

static inline int ioprio_set(int which, int who, int ioprio_class, int ioprio)
{
	/*
	 * If no class is set, assume BE
	 */
	if (!ioprio_class)
		ioprio_class = IOPRIO_CLASS_BE;

	ioprio |= ioprio_class << IOPRIO_CLASS_SHIFT;
	return syscall(__NR_ioprio_set, which, who, ioprio);
}

#ifndef BLKGETSIZE64
#define BLKGETSIZE64	_IOR(0x12,114,size_t)
#endif

#ifndef BLKFLSBUF
#define BLKFLSBUF	_IO(0x12,97)
#endif

#ifndef BLKDISCARD
#define BLKDISCARD	_IO(0x12,119)
#endif

static inline int blockdev_invalidate_cache(struct fio_file *f)
{
	return ioctl(f->fd, BLKFLSBUF);
}

static inline int blockdev_size(struct fio_file *f, unsigned long long *bytes)
{
	if (!ioctl(f->fd, BLKGETSIZE64, bytes))
		return 0;

	return errno;
}

static inline unsigned long long os_phys_mem(void)
{
	long pagesize, pages;

	pagesize = sysconf(_SC_PAGESIZE);
	pages = sysconf(_SC_PHYS_PAGES);
	if (pages == -1 || pagesize == -1)
		return 0;

	return (unsigned long long) pages * (unsigned long long) pagesize;
}

typedef struct { unsigned short r[3]; } os_random_state_t;

static inline void os_random_seed(unsigned long seed, os_random_state_t *rs)
{
	rs->r[0] = seed & 0xffff;
	seed >>= 16;
	rs->r[1] = seed & 0xffff;
	seed >>= 16;
	rs->r[2] = seed & 0xffff;
	seed48(rs->r);
}

static inline long os_random_long(os_random_state_t *rs)
{
	return nrand48(rs->r);
}

#ifdef O_NOATIME
#define FIO_O_NOATIME	O_NOATIME
#else
#define FIO_O_NOATIME	0
#endif

/* Check for GCC or Clang byte swap intrinsics */
#if (__has_builtin(__builtin_bswap16) && __has_builtin(__builtin_bswap32) \
     && __has_builtin(__builtin_bswap64)) || (__GNUC__ > 4 \
     || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)) /* fio_swapN */
#define fio_swap16(x)	__builtin_bswap16(x)
#define fio_swap32(x)	__builtin_bswap32(x)
#define fio_swap64(x)	__builtin_bswap64(x)
#else
#include <byteswap.h>
#define fio_swap16(x)	bswap_16(x)
#define fio_swap32(x)	bswap_32(x)
#define fio_swap64(x)	bswap_64(x)
#endif /* fio_swapN */

#define CACHE_LINE_FILE	\
	"/sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size"

static inline int arch_cache_line_size(void)
{
	char size[32];
	int fd, ret;

	fd = open(CACHE_LINE_FILE, O_RDONLY);
	if (fd < 0)
		return -1;

	ret = read(fd, size, sizeof(size));

	close(fd);

	if (ret <= 0)
		return -1;
	else
		return atoi(size);
}

static inline unsigned long long get_fs_free_size(const char *path)
{
	unsigned long long ret;
	struct statfs s;

	if (statfs(path, &s) < 0)
		return -1ULL;

	ret = s.f_bsize;
	ret *= (unsigned long long) s.f_bfree;
	return ret;
}

static inline int os_trim(struct fio_file *f, unsigned long long start,
			  unsigned long long len)
{
	uint64_t range[2];

	range[0] = start;
	range[1] = len;

	if (!ioctl(f->fd, BLKDISCARD, range))
		return 0;

	return errno;
}

#ifdef CONFIG_SCHED_IDLE
static inline int fio_set_sched_idle(void)
{
        struct sched_param p = { .sched_priority = 0, };
        return sched_setscheduler(gettid(), SCHED_IDLE, &p);
}
#endif

#endif
Commit	Line	Data
ec5c6b12 AC	1	#ifndef FIO_OS_ANDROID_H
	2	#define FIO_OS_ANDROID_H
	3
	4	#define FIO_OS os_android
	5
	6	#include <sys/ioctl.h>
93eeb558	7	#include <sys/mman.h>
ec5c6b12 AC	8	#include <sys/uio.h>
ec5c6b12 AC	9	#include <sys/syscall.h>
036a1599	10	#include <sys/sysmacros.h>
ec5c6b12 AC	11	#include <sys/vfs.h>
	12	#include <unistd.h>
	13	#include <fcntl.h>
	14	#include <errno.h>
	15	#include <sched.h>
	16	#include <linux/unistd.h>
	17	#include <linux/major.h>
da52c582	18	#include <asm/byteorder.h>
ec5c6b12	19
eec97b93	20	#include "./os-linux-syscall.h"
ec5c6b12 AC	21	#include "binject.h"
	22	#include "../file.h"
	23
0fa5c986 OM	24	#ifndef __has_builtin // Optional of course.
	25	#define __has_builtin(x) 0 // Compatibility with non-clang compilers.
	26	#endif
	27
ec5c6b12	28	#define FIO_HAVE_DISK_UTIL
ec5c6b12	29	#define FIO_HAVE_IOSCHED_SWITCH
177380ab	30	#define FIO_HAVE_IOPRIO
32ef447a	31	#define FIO_HAVE_IOPRIO_CLASS
ec5c6b12 AC	32	#define FIO_HAVE_ODIRECT
	33	#define FIO_HAVE_HUGETLB
	34	#define FIO_HAVE_BLKTRACE
ec5c6b12	35	#define FIO_HAVE_CL_SIZE
3714a963	36	#define FIO_HAVE_CGROUPS
ec5c6b12 AC	37	#define FIO_HAVE_FS_STAT
ec5c6b12 AC	38	#define FIO_HAVE_TRIM
ec5c6b12 AC	39	#define FIO_HAVE_GETTID
	40	#define FIO_USE_GENERIC_INIT_RANDOM_STATE
	41	#define FIO_HAVE_E4_ENG
	42	#define FIO_HAVE_BYTEORDER_FUNCS
6d0e9f83	43	#define FIO_HAVE_MMAP_HUGE
a5e0ee11	44	#define FIO_NO_HAVE_SHM_H
ec5c6b12 AC	45
	46	#define OS_MAP_ANON MAP_ANONYMOUS
	47
93eeb558	48	#ifndef POSIX_MADV_DONTNEED
ec5c6b12 AC	49	#define posix_madvise madvise
	50	#define POSIX_MADV_DONTNEED MADV_DONTNEED
	51	#define POSIX_MADV_SEQUENTIAL MADV_SEQUENTIAL
	52	#define POSIX_MADV_RANDOM MADV_RANDOM
93eeb558	53	#endif
93eeb558	54
ec5c6b12 AC	55	#ifdef MADV_REMOVE
	56	#define FIO_MADV_FREE MADV_REMOVE
	57	#endif
a5e0ee11 O	58	#ifndef MAP_HUGETLB
	59	#define MAP_HUGETLB 0x40000 /* arch specific */
	60	#endif
ec5c6b12	61
6ca9b06d	62	#ifndef CONFIG_NO_SHM
ec5c6b12	63	/*
68bf62a0	64	* Bionic doesn't support SysV shared memeory, so implement it using ashmem
ec5c6b12	65	*/
239a11de AJ	66	#include <stdio.h>
239a11de AJ	67	#include <linux/ashmem.h>
68bf62a0 OM	68	#include <linux/shm.h>
	69	#define shmid_ds shmid64_ds
	70	#define SHM_HUGETLB 04000
239a11de AJ	71
	72	#define ASHMEM_DEVICE "/dev/ashmem"
	73
68bf62a0	74	static inline int shmctl(int __shmid, int __cmd, struct shmid_ds *__buf)
ec5c6b12	75	{
239a11de AJ	76	int ret=0;
	77	if (__cmd == IPC_RMID)
	78	{
	79	int length = ioctl(__shmid, ASHMEM_GET_SIZE, NULL);
	80	struct ashmem_pin pin = {0 , length};
	81	ret = ioctl(__shmid, ASHMEM_UNPIN, &pin);
	82	close(__shmid);
	83	}
	84	return ret;
ec5c6b12 AC	85	}
ec5c6b12 AC	86
68bf62a0	87	static inline int shmget(key_t __key, size_t __size, int __shmflg)
ec5c6b12	88	{
239a11de	89	int fd,ret;
91f64346 OM	90	char keybuf[11];
91f64346 OM	91
239a11de AJ	92	fd = open(ASHMEM_DEVICE, O_RDWR);
	93	if (fd < 0)
	94	return fd;
	95
91f64346 OM	96	sprintf(keybuf,"%d",__key);
91f64346 OM	97	ret = ioctl(fd, ASHMEM_SET_NAME, keybuf);
239a11de AJ	98	if (ret < 0)
	99	goto error;
	100
d8767475 OM	101	/* Stores size in first 8 bytes, allocate extra space */
d8767475 OM	102	ret = ioctl(fd, ASHMEM_SET_SIZE, __size + sizeof(uint64_t));
239a11de AJ	103	if (ret < 0)
	104	goto error;
	105
	106	return fd;
91f64346	107
239a11de AJ	108	error:
	109	close(fd);
	110	return ret;
ec5c6b12 AC	111	}
ec5c6b12 AC	112
68bf62a0	113	static inline void shmat(int __shmid, const void __shmaddr, int __shmflg)
ec5c6b12	114	{
d8767475 OM	115	size_t size = ioctl(__shmid, ASHMEM_GET_SIZE, NULL);
	116	/* Needs to be 8-byte aligned to prevent SIGBUS on 32-bit ARM */
	117	uint64_t *ptr = mmap(NULL, size, PROT_READ \| PROT_WRITE, MAP_SHARED, __shmid, 0);
	118	/* Save size at beginning of buffer, for use with munmap */
	119	*ptr = size;
	120	return ptr + 1;
ec5c6b12 AC	121	}
	122
	123	static inline int shmdt (const void *__shmaddr)
	124	{
d8767475 OM	125	/* Find mmap size which we stored at the beginning of the buffer */
	126	uint64_t ptr = (uint64_t )__shmaddr - 1;
	127	size_t size = *ptr;
	128	return munmap(ptr, size);
ec5c6b12	129	}
6ca9b06d	130	#endif
ec5c6b12	131
ec5c6b12 AC	132	#define SPLICE_DEF_SIZE (64*1024)
ec5c6b12 AC	133
177380ab AC	134	enum {
	135	IOPRIO_CLASS_NONE,
	136	IOPRIO_CLASS_RT,
	137	IOPRIO_CLASS_BE,
	138	IOPRIO_CLASS_IDLE,
	139	};
	140
	141	enum {
	142	IOPRIO_WHO_PROCESS = 1,
	143	IOPRIO_WHO_PGRP,
	144	IOPRIO_WHO_USER,
	145	};
	146
	147	#define IOPRIO_BITS 16
	148	#define IOPRIO_CLASS_SHIFT 13
	149
1767bd34 TK	150	#define IOPRIO_MIN_PRIO 0 /* highest priority */
	151	#define IOPRIO_MAX_PRIO 7 /* lowest priority */
	152
	153	#define IOPRIO_MIN_PRIO_CLASS 0
	154	#define IOPRIO_MAX_PRIO_CLASS 3
	155
a415b2cc AC	156	static inline int ioprio_set(int which, int who, int ioprio_class, int ioprio)
	157	{
	158	/*
	159	* If no class is set, assume BE
	160	*/
	161	if (!ioprio_class)
	162	ioprio_class = IOPRIO_CLASS_BE;
	163
	164	ioprio \|= ioprio_class << IOPRIO_CLASS_SHIFT;
	165	return syscall(__NR_ioprio_set, which, who, ioprio);
	166	}
	167
ec5c6b12 AC	168	#ifndef BLKGETSIZE64
	169	#define BLKGETSIZE64 _IOR(0x12,114,size_t)
	170	#endif
	171
	172	#ifndef BLKFLSBUF
	173	#define BLKFLSBUF _IO(0x12,97)
	174	#endif
	175
	176	#ifndef BLKDISCARD
	177	#define BLKDISCARD _IO(0x12,119)
	178	#endif
	179
	180	static inline int blockdev_invalidate_cache(struct fio_file *f)
	181	{
	182	return ioctl(f->fd, BLKFLSBUF);
	183	}
	184
	185	static inline int blockdev_size(struct fio_file f, unsigned long long bytes)
	186	{
	187	if (!ioctl(f->fd, BLKGETSIZE64, bytes))
	188	return 0;
	189
	190	return errno;
	191	}
	192
	193	static inline unsigned long long os_phys_mem(void)
	194	{
	195	long pagesize, pages;
	196
	197	pagesize = sysconf(_SC_PAGESIZE);
	198	pages = sysconf(_SC_PHYS_PAGES);
	199	if (pages == -1 \|\| pagesize == -1)
	200	return 0;
	201
	202	return (unsigned long long) pages * (unsigned long long) pagesize;
	203	}
	204
	205	typedef struct { unsigned short r[3]; } os_random_state_t;
	206
	207	static inline void os_random_seed(unsigned long seed, os_random_state_t *rs)
	208	{
	209	rs->r[0] = seed & 0xffff;
	210	seed >>= 16;
	211	rs->r[1] = seed & 0xffff;
	212	seed >>= 16;
	213	rs->r[2] = seed & 0xffff;
	214	seed48(rs->r);
	215	}
	216
	217	static inline long os_random_long(os_random_state_t *rs)
	218	{
	219	return nrand48(rs->r);
	220	}
	221
	222	#ifdef O_NOATIME
	223	#define FIO_O_NOATIME O_NOATIME
	224	#else
	225	#define FIO_O_NOATIME 0
	226	#endif
	227
0fa5c986 OM	228	/* Check for GCC or Clang byte swap intrinsics */
	229	#if (__has_builtin(__builtin_bswap16) && __has_builtin(__builtin_bswap32) \
	230	&& __has_builtin(__builtin_bswap64)) \|\| (__GNUC__ > 4 \
	231	\|\| (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)) /* fio_swapN */
	232	#define fio_swap16(x) __builtin_bswap16(x)
	233	#define fio_swap32(x) __builtin_bswap32(x)
	234	#define fio_swap64(x) __builtin_bswap64(x)
	235	#else
	236	#include <byteswap.h>
	237	#define fio_swap16(x) bswap_16(x)
	238	#define fio_swap32(x) bswap_32(x)
	239	#define fio_swap64(x) bswap_64(x)
	240	#endif /* fio_swapN */
ec5c6b12 AC	241
	242	#define CACHE_LINE_FILE \
	243	"/sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size"
	244
	245	static inline int arch_cache_line_size(void)
	246	{
	247	char size[32];
	248	int fd, ret;
	249
	250	fd = open(CACHE_LINE_FILE, O_RDONLY);
	251	if (fd < 0)
	252	return -1;
	253
	254	ret = read(fd, size, sizeof(size));
	255
	256	close(fd);
	257
	258	if (ret <= 0)
	259	return -1;
	260	else
	261	return atoi(size);
	262	}
	263
c08ad04c	264	static inline unsigned long long get_fs_free_size(const char *path)
ec5c6b12 AC	265	{
	266	unsigned long long ret;
	267	struct statfs s;
	268
	269	if (statfs(path, &s) < 0)
	270	return -1ULL;
	271
	272	ret = s.f_bsize;
	273	ret *= (unsigned long long) s.f_bfree;
	274	return ret;
	275	}
	276
496b1f9e	277	static inline int os_trim(struct fio_file *f, unsigned long long start,
ec5c6b12 AC	278	unsigned long long len)
	279	{
	280	uint64_t range[2];
	281
	282	range[0] = start;
	283	range[1] = len;
	284
496b1f9e	285	if (!ioctl(f->fd, BLKDISCARD, range))
ec5c6b12 AC	286	return 0;
	287
	288	return errno;
	289	}
	290
93eeb558	291	#ifdef CONFIG_SCHED_IDLE
	292	static inline int fio_set_sched_idle(void)
	293	{
	294	struct sched_param p = { .sched_priority = 0, };
	295	return sched_setscheduler(gettid(), SCHED_IDLE, &p);
	296	}
	297	#endif
	298
ec5c6b12	299	#endif