[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/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_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(int fd, unsigned long long start,
			  unsigned long long len)
{
	uint64_t range[2];

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

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