[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 "../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

#ifdef CONFIG_PTHREAD_GETAFFINITY
#define FIO_HAVE_GET_THREAD_AFFINITY
#define fio_get_thread_affinity(mask)	\
	pthread_getaffinity_np(pthread_self(), sizeof(mask), &(mask))
#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;
}

#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 "../file.h"
ec5c6b12 AC	22
0fa5c986 OM	23	#ifndef __has_builtin // Optional of course.
	24	#define __has_builtin(x) 0 // Compatibility with non-clang compilers.
	25	#endif
	26
ec5c6b12	27	#define FIO_HAVE_DISK_UTIL
ec5c6b12	28	#define FIO_HAVE_IOSCHED_SWITCH
177380ab	29	#define FIO_HAVE_IOPRIO
32ef447a	30	#define FIO_HAVE_IOPRIO_CLASS
ec5c6b12 AC	31	#define FIO_HAVE_ODIRECT
	32	#define FIO_HAVE_HUGETLB
	33	#define FIO_HAVE_BLKTRACE
ec5c6b12	34	#define FIO_HAVE_CL_SIZE
3714a963	35	#define FIO_HAVE_CGROUPS
ec5c6b12 AC	36	#define FIO_HAVE_FS_STAT
ec5c6b12 AC	37	#define FIO_HAVE_TRIM
ec5c6b12 AC	38	#define FIO_HAVE_GETTID
	39	#define FIO_USE_GENERIC_INIT_RANDOM_STATE
	40	#define FIO_HAVE_E4_ENG
	41	#define FIO_HAVE_BYTEORDER_FUNCS
6d0e9f83	42	#define FIO_HAVE_MMAP_HUGE
a5e0ee11	43	#define FIO_NO_HAVE_SHM_H
ec5c6b12 AC	44
	45	#define OS_MAP_ANON MAP_ANONYMOUS
	46
93eeb558	47	#ifndef POSIX_MADV_DONTNEED
ec5c6b12 AC	48	#define posix_madvise madvise
	49	#define POSIX_MADV_DONTNEED MADV_DONTNEED
	50	#define POSIX_MADV_SEQUENTIAL MADV_SEQUENTIAL
	51	#define POSIX_MADV_RANDOM MADV_RANDOM
93eeb558	52	#endif
93eeb558	53
ec5c6b12 AC	54	#ifdef MADV_REMOVE
	55	#define FIO_MADV_FREE MADV_REMOVE
	56	#endif
a5e0ee11 O	57	#ifndef MAP_HUGETLB
	58	#define MAP_HUGETLB 0x40000 /* arch specific */
	59	#endif
ec5c6b12	60
e9d2a04d TK	61	#ifdef CONFIG_PTHREAD_GETAFFINITY
	62	#define FIO_HAVE_GET_THREAD_AFFINITY
	63	#define fio_get_thread_affinity(mask) \
	64	pthread_getaffinity_np(pthread_self(), sizeof(mask), &(mask))
	65	#endif
	66
6ca9b06d	67	#ifndef CONFIG_NO_SHM
ec5c6b12	68	/*
68bf62a0	69	* Bionic doesn't support SysV shared memeory, so implement it using ashmem
ec5c6b12	70	*/
239a11de AJ	71	#include <stdio.h>
239a11de AJ	72	#include <linux/ashmem.h>
68bf62a0 OM	73	#include <linux/shm.h>
	74	#define shmid_ds shmid64_ds
	75	#define SHM_HUGETLB 04000
239a11de AJ	76
	77	#define ASHMEM_DEVICE "/dev/ashmem"
	78
68bf62a0	79	static inline int shmctl(int __shmid, int __cmd, struct shmid_ds *__buf)
ec5c6b12	80	{
239a11de AJ	81	int ret=0;
	82	if (__cmd == IPC_RMID)
	83	{
	84	int length = ioctl(__shmid, ASHMEM_GET_SIZE, NULL);
	85	struct ashmem_pin pin = {0 , length};
	86	ret = ioctl(__shmid, ASHMEM_UNPIN, &pin);
	87	close(__shmid);
	88	}
	89	return ret;
ec5c6b12 AC	90	}
ec5c6b12 AC	91
68bf62a0	92	static inline int shmget(key_t __key, size_t __size, int __shmflg)
ec5c6b12	93	{
239a11de	94	int fd,ret;
91f64346 OM	95	char keybuf[11];
91f64346 OM	96
239a11de AJ	97	fd = open(ASHMEM_DEVICE, O_RDWR);
	98	if (fd < 0)
	99	return fd;
	100
91f64346 OM	101	sprintf(keybuf,"%d",__key);
91f64346 OM	102	ret = ioctl(fd, ASHMEM_SET_NAME, keybuf);
239a11de AJ	103	if (ret < 0)
	104	goto error;
	105
d8767475 OM	106	/* Stores size in first 8 bytes, allocate extra space */
d8767475 OM	107	ret = ioctl(fd, ASHMEM_SET_SIZE, __size + sizeof(uint64_t));
239a11de AJ	108	if (ret < 0)
	109	goto error;
	110
	111	return fd;
91f64346	112
239a11de AJ	113	error:
	114	close(fd);
	115	return ret;
ec5c6b12 AC	116	}
ec5c6b12 AC	117
68bf62a0	118	static inline void shmat(int __shmid, const void __shmaddr, int __shmflg)
ec5c6b12	119	{
d8767475 OM	120	size_t size = ioctl(__shmid, ASHMEM_GET_SIZE, NULL);
	121	/* Needs to be 8-byte aligned to prevent SIGBUS on 32-bit ARM */
	122	uint64_t *ptr = mmap(NULL, size, PROT_READ \| PROT_WRITE, MAP_SHARED, __shmid, 0);
	123	/* Save size at beginning of buffer, for use with munmap */
	124	*ptr = size;
	125	return ptr + 1;
ec5c6b12 AC	126	}
	127
	128	static inline int shmdt (const void *__shmaddr)
	129	{
d8767475 OM	130	/* Find mmap size which we stored at the beginning of the buffer */
	131	uint64_t ptr = (uint64_t )__shmaddr - 1;
	132	size_t size = *ptr;
	133	return munmap(ptr, size);
ec5c6b12	134	}
6ca9b06d	135	#endif
ec5c6b12	136
ec5c6b12 AC	137	#define SPLICE_DEF_SIZE (64*1024)
ec5c6b12 AC	138
177380ab AC	139	enum {
	140	IOPRIO_CLASS_NONE,
	141	IOPRIO_CLASS_RT,
	142	IOPRIO_CLASS_BE,
	143	IOPRIO_CLASS_IDLE,
	144	};
	145
	146	enum {
	147	IOPRIO_WHO_PROCESS = 1,
	148	IOPRIO_WHO_PGRP,
	149	IOPRIO_WHO_USER,
	150	};
	151
	152	#define IOPRIO_BITS 16
	153	#define IOPRIO_CLASS_SHIFT 13
	154
1767bd34 TK	155	#define IOPRIO_MIN_PRIO 0 /* highest priority */
	156	#define IOPRIO_MAX_PRIO 7 /* lowest priority */
	157
	158	#define IOPRIO_MIN_PRIO_CLASS 0
	159	#define IOPRIO_MAX_PRIO_CLASS 3
	160
a415b2cc AC	161	static inline int ioprio_set(int which, int who, int ioprio_class, int ioprio)
	162	{
	163	/*
	164	* If no class is set, assume BE
	165	*/
	166	if (!ioprio_class)
	167	ioprio_class = IOPRIO_CLASS_BE;
	168
	169	ioprio \|= ioprio_class << IOPRIO_CLASS_SHIFT;
	170	return syscall(__NR_ioprio_set, which, who, ioprio);
	171	}
	172
ec5c6b12 AC	173	#ifndef BLKGETSIZE64
	174	#define BLKGETSIZE64 _IOR(0x12,114,size_t)
	175	#endif
	176
	177	#ifndef BLKFLSBUF
	178	#define BLKFLSBUF _IO(0x12,97)
	179	#endif
	180
	181	#ifndef BLKDISCARD
	182	#define BLKDISCARD _IO(0x12,119)
	183	#endif
	184
	185	static inline int blockdev_invalidate_cache(struct fio_file *f)
	186	{
	187	return ioctl(f->fd, BLKFLSBUF);
	188	}
	189
	190	static inline int blockdev_size(struct fio_file f, unsigned long long bytes)
	191	{
	192	if (!ioctl(f->fd, BLKGETSIZE64, bytes))
	193	return 0;
	194
	195	return errno;
	196	}
	197
	198	static inline unsigned long long os_phys_mem(void)
	199	{
	200	long pagesize, pages;
	201
	202	pagesize = sysconf(_SC_PAGESIZE);
	203	pages = sysconf(_SC_PHYS_PAGES);
	204	if (pages == -1 \|\| pagesize == -1)
	205	return 0;
	206
	207	return (unsigned long long) pages * (unsigned long long) pagesize;
	208	}
	209
ec5c6b12 AC	210	#ifdef O_NOATIME
	211	#define FIO_O_NOATIME O_NOATIME
	212	#else
	213	#define FIO_O_NOATIME 0
	214	#endif
	215
0fa5c986 OM	216	/* Check for GCC or Clang byte swap intrinsics */
	217	#if (__has_builtin(__builtin_bswap16) && __has_builtin(__builtin_bswap32) \
	218	&& __has_builtin(__builtin_bswap64)) \|\| (__GNUC__ > 4 \
	219	\|\| (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)) /* fio_swapN */
	220	#define fio_swap16(x) __builtin_bswap16(x)
	221	#define fio_swap32(x) __builtin_bswap32(x)
	222	#define fio_swap64(x) __builtin_bswap64(x)
	223	#else
	224	#include <byteswap.h>
	225	#define fio_swap16(x) bswap_16(x)
	226	#define fio_swap32(x) bswap_32(x)
	227	#define fio_swap64(x) bswap_64(x)
	228	#endif /* fio_swapN */
ec5c6b12 AC	229
	230	#define CACHE_LINE_FILE \
	231	"/sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size"
	232
	233	static inline int arch_cache_line_size(void)
	234	{
	235	char size[32];
	236	int fd, ret;
	237
	238	fd = open(CACHE_LINE_FILE, O_RDONLY);
	239	if (fd < 0)
	240	return -1;
	241
	242	ret = read(fd, size, sizeof(size));
	243
	244	close(fd);
	245
	246	if (ret <= 0)
	247	return -1;
	248	else
	249	return atoi(size);
	250	}
	251
c08ad04c	252	static inline unsigned long long get_fs_free_size(const char *path)
ec5c6b12 AC	253	{
	254	unsigned long long ret;
	255	struct statfs s;
	256
	257	if (statfs(path, &s) < 0)
	258	return -1ULL;
	259
	260	ret = s.f_bsize;
	261	ret *= (unsigned long long) s.f_bfree;
	262	return ret;
	263	}
	264
496b1f9e	265	static inline int os_trim(struct fio_file *f, unsigned long long start,
ec5c6b12 AC	266	unsigned long long len)
	267	{
	268	uint64_t range[2];
	269
	270	range[0] = start;
	271	range[1] = len;
	272
496b1f9e	273	if (!ioctl(f->fd, BLKDISCARD, range))
ec5c6b12 AC	274	return 0;
	275
	276	return errno;
	277	}
	278
93eeb558	279	#ifdef CONFIG_SCHED_IDLE
	280	static inline int fio_set_sched_idle(void)
	281	{
	282	struct sched_param p = { .sched_priority = 0, };
	283	return sched_setscheduler(gettid(), SCHED_IDLE, &p);
	284	}
	285	#endif
	286
ec5c6b12	287	#endif