[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>
#include <android/api-level.h>
#if __ANDROID_API__ >= __ANDROID_API_O__
#include <android/sharedmem.h>
#else
#define ASHMEM_DEVICE	"/dev/ashmem"
#endif
#define shmid_ds shmid64_ds
#define SHM_HUGETLB    04000

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;
}

#if __ANDROID_API__ >= __ANDROID_API_O__
static inline int shmget(key_t __key, size_t __size, int __shmflg)
{
	char keybuf[11];

	sprintf(keybuf, "%d", __key);

	return ASharedMemory_create(keybuf, __size + sizeof(uint64_t));
}
#else
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;
}
#endif

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_value(int ioprio_class, int ioprio)
{
	/*
	 * If no class is set, assume BE
	 */
        if (!ioprio_class)
                ioprio_class = IOPRIO_CLASS_BE;

	return (ioprio_class << IOPRIO_CLASS_SHIFT) | ioprio;
}

static inline int ioprio_set(int which, int who, int ioprio_class, int ioprio)
{
	return syscall(__NR_ioprio_set, which, who,
		       ioprio_value(ioprio_class, 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
	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/sysmacros.h>
	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>
	18	#include <asm/byteorder.h>
	19
	20	#include "./os-linux-syscall.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_CGROUPS
	36	#define FIO_HAVE_FS_STAT
	37	#define FIO_HAVE_TRIM
	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
	42	#define FIO_HAVE_MMAP_HUGE
	43	#define FIO_NO_HAVE_SHM_H
	44
	45	#define OS_MAP_ANON MAP_ANONYMOUS
	46
	47	#ifndef POSIX_MADV_DONTNEED
	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
	52	#endif
	53
	54	#ifdef MADV_REMOVE
	55	#define FIO_MADV_FREE MADV_REMOVE
	56	#endif
	57	#ifndef MAP_HUGETLB
	58	#define MAP_HUGETLB 0x40000 /* arch specific */
	59	#endif
	60
	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
	67	#ifndef CONFIG_NO_SHM
	68	/*
	69	* Bionic doesn't support SysV shared memeory, so implement it using ashmem
	70	*/
	71	#include <stdio.h>
	72	#include <linux/ashmem.h>
	73	#include <linux/shm.h>
	74	#include <android/api-level.h>
	75	#if __ANDROID_API__ >= __ANDROID_API_O__
	76	#include <android/sharedmem.h>
	77	#else
	78	#define ASHMEM_DEVICE "/dev/ashmem"
	79	#endif
	80	#define shmid_ds shmid64_ds
	81	#define SHM_HUGETLB 04000
	82
	83	static inline int shmctl(int __shmid, int __cmd, struct shmid_ds *__buf)
	84	{
	85	int ret=0;
	86	if (__cmd == IPC_RMID)
	87	{
	88	int length = ioctl(__shmid, ASHMEM_GET_SIZE, NULL);
	89	struct ashmem_pin pin = {0 , length};
	90	ret = ioctl(__shmid, ASHMEM_UNPIN, &pin);
	91	close(__shmid);
	92	}
	93	return ret;
	94	}
	95
	96	#if __ANDROID_API__ >= __ANDROID_API_O__
	97	static inline int shmget(key_t __key, size_t __size, int __shmflg)
	98	{
	99	char keybuf[11];
	100
	101	sprintf(keybuf, "%d", __key);
	102
	103	return ASharedMemory_create(keybuf, __size + sizeof(uint64_t));
	104	}
	105	#else
	106	static inline int shmget(key_t __key, size_t __size, int __shmflg)
	107	{
	108	int fd,ret;
	109	char keybuf[11];
	110
	111	fd = open(ASHMEM_DEVICE, O_RDWR);
	112	if (fd < 0)
	113	return fd;
	114
	115	sprintf(keybuf,"%d",__key);
	116	ret = ioctl(fd, ASHMEM_SET_NAME, keybuf);
	117	if (ret < 0)
	118	goto error;
	119
	120	/* Stores size in first 8 bytes, allocate extra space */
	121	ret = ioctl(fd, ASHMEM_SET_SIZE, __size + sizeof(uint64_t));
	122	if (ret < 0)
	123	goto error;
	124
	125	return fd;
	126
	127	error:
	128	close(fd);
	129	return ret;
	130	}
	131	#endif
	132
	133	static inline void shmat(int __shmid, const void __shmaddr, int __shmflg)
	134	{
	135	size_t size = ioctl(__shmid, ASHMEM_GET_SIZE, NULL);
	136	/* Needs to be 8-byte aligned to prevent SIGBUS on 32-bit ARM */
	137	uint64_t *ptr = mmap(NULL, size, PROT_READ \| PROT_WRITE, MAP_SHARED, __shmid, 0);
	138	/* Save size at beginning of buffer, for use with munmap */
	139	*ptr = size;
	140	return ptr + 1;
	141	}
	142
	143	static inline int shmdt (const void *__shmaddr)
	144	{
	145	/* Find mmap size which we stored at the beginning of the buffer */
	146	uint64_t ptr = (uint64_t )__shmaddr - 1;
	147	size_t size = *ptr;
	148	return munmap(ptr, size);
	149	}
	150	#endif
	151
	152	#define SPLICE_DEF_SIZE (64*1024)
	153
	154	enum {
	155	IOPRIO_CLASS_NONE,
	156	IOPRIO_CLASS_RT,
	157	IOPRIO_CLASS_BE,
	158	IOPRIO_CLASS_IDLE,
	159	};
	160
	161	enum {
	162	IOPRIO_WHO_PROCESS = 1,
	163	IOPRIO_WHO_PGRP,
	164	IOPRIO_WHO_USER,
	165	};
	166
	167	#define IOPRIO_BITS 16
	168	#define IOPRIO_CLASS_SHIFT 13
	169
	170	#define IOPRIO_MIN_PRIO 0 /* highest priority */
	171	#define IOPRIO_MAX_PRIO 7 /* lowest priority */
	172
	173	#define IOPRIO_MIN_PRIO_CLASS 0
	174	#define IOPRIO_MAX_PRIO_CLASS 3
	175
	176	static inline int ioprio_value(int ioprio_class, int ioprio)
	177	{
	178	/*
	179	* If no class is set, assume BE
	180	*/
	181	if (!ioprio_class)
	182	ioprio_class = IOPRIO_CLASS_BE;
	183
	184	return (ioprio_class << IOPRIO_CLASS_SHIFT) \| ioprio;
	185	}
	186
	187	static inline int ioprio_set(int which, int who, int ioprio_class, int ioprio)
	188	{
	189	return syscall(__NR_ioprio_set, which, who,
	190	ioprio_value(ioprio_class, ioprio));
	191	}
	192
	193	#ifndef BLKGETSIZE64
	194	#define BLKGETSIZE64 _IOR(0x12,114,size_t)
	195	#endif
	196
	197	#ifndef BLKFLSBUF
	198	#define BLKFLSBUF _IO(0x12,97)
	199	#endif
	200
	201	#ifndef BLKDISCARD
	202	#define BLKDISCARD _IO(0x12,119)
	203	#endif
	204
	205	static inline int blockdev_invalidate_cache(struct fio_file *f)
	206	{
	207	return ioctl(f->fd, BLKFLSBUF);
	208	}
	209
	210	static inline int blockdev_size(struct fio_file f, unsigned long long bytes)
	211	{
	212	if (!ioctl(f->fd, BLKGETSIZE64, bytes))
	213	return 0;
	214
	215	return errno;
	216	}
	217
	218	static inline unsigned long long os_phys_mem(void)
	219	{
	220	long pagesize, pages;
	221
	222	pagesize = sysconf(_SC_PAGESIZE);
	223	pages = sysconf(_SC_PHYS_PAGES);
	224	if (pages == -1 \|\| pagesize == -1)
	225	return 0;
	226
	227	return (unsigned long long) pages * (unsigned long long) pagesize;
	228	}
	229
	230	#ifdef O_NOATIME
	231	#define FIO_O_NOATIME O_NOATIME
	232	#else
	233	#define FIO_O_NOATIME 0
	234	#endif
	235
	236	/* Check for GCC or Clang byte swap intrinsics */
	237	#if (__has_builtin(__builtin_bswap16) && __has_builtin(__builtin_bswap32) \
	238	&& __has_builtin(__builtin_bswap64)) \|\| (__GNUC__ > 4 \
	239	\|\| (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)) /* fio_swapN */
	240	#define fio_swap16(x) __builtin_bswap16(x)
	241	#define fio_swap32(x) __builtin_bswap32(x)
	242	#define fio_swap64(x) __builtin_bswap64(x)
	243	#else
	244	#include <byteswap.h>
	245	#define fio_swap16(x) bswap_16(x)
	246	#define fio_swap32(x) bswap_32(x)
	247	#define fio_swap64(x) bswap_64(x)
	248	#endif /* fio_swapN */
	249
	250	#define CACHE_LINE_FILE \
	251	"/sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size"
	252
	253	static inline int arch_cache_line_size(void)
	254	{
	255	char size[32];
	256	int fd, ret;
	257
	258	fd = open(CACHE_LINE_FILE, O_RDONLY);
	259	if (fd < 0)
	260	return -1;
	261
	262	ret = read(fd, size, sizeof(size));
	263
	264	close(fd);
	265
	266	if (ret <= 0)
	267	return -1;
	268	else
	269	return atoi(size);
	270	}
	271
	272	static inline unsigned long long get_fs_free_size(const char *path)
	273	{
	274	unsigned long long ret;
	275	struct statfs s;
	276
	277	if (statfs(path, &s) < 0)
	278	return -1ULL;
	279
	280	ret = s.f_bsize;
	281	ret *= (unsigned long long) s.f_bfree;
	282	return ret;
	283	}
	284
	285	static inline int os_trim(struct fio_file *f, unsigned long long start,
	286	unsigned long long len)
	287	{
	288	uint64_t range[2];
	289
	290	range[0] = start;
	291	range[1] = len;
	292
	293	if (!ioctl(f->fd, BLKDISCARD, range))
	294	return 0;
	295
	296	return errno;
	297	}
	298
	299	#ifdef CONFIG_SCHED_IDLE
	300	static inline int fio_set_sched_idle(void)
	301	{
	302	struct sched_param p = { .sched_priority = 0, };
	303	return sched_setscheduler(gettid(), SCHED_IDLE, &p);
	304	}
	305	#endif
	306
	307	#endif