[fio.git] / engines / windowsaio.c

/*
 * Native Windows async IO engine
 * Copyright (C) 2012 Bruce Cran <bruce@cran.org.uk>
 */

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <signal.h>
#include <errno.h>
#include <windows.h>

#include "../fio.h"

typedef BOOL (WINAPI *CANCELIOEX)(HANDLE hFile, LPOVERLAPPED lpOverlapped);

int geterrno_from_win_error (DWORD code, int deferrno);

struct fio_overlapped {
	OVERLAPPED o;
	struct io_u *io_u;
	BOOL io_complete;
};

struct windowsaio_data {
	struct io_u **aio_events;
	HANDLE iothread;
	HANDLE iocomplete_event;
	CANCELIOEX pCancelIoEx;
	BOOL iothread_running;
};

struct thread_ctx {
	HANDLE iocp;
	struct windowsaio_data *wd;
};

static int fio_windowsaio_cancel(struct thread_data *td,
			       struct io_u *io_u);
static BOOL timeout_expired(DWORD start_count, DWORD end_count);
static int fio_windowsaio_getevents(struct thread_data *td, unsigned int min,
				    unsigned int max, struct timespec *t);
static struct io_u *fio_windowsaio_event(struct thread_data *td, int event);
static int fio_windowsaio_queue(struct thread_data *td,
			      struct io_u *io_u);
static void fio_windowsaio_cleanup(struct thread_data *td);
static DWORD WINAPI IoCompletionRoutine(LPVOID lpParameter);
static int fio_windowsaio_init(struct thread_data *td);
static int fio_windowsaio_open_file(struct thread_data *td, struct fio_file *f);
static int fio_windowsaio_close_file(struct thread_data fio_unused *td, struct fio_file *f);
static int win_to_poxix_error(DWORD winerr);

static int win_to_poxix_error(DWORD winerr)
{
	switch (winerr)
	{
	case ERROR_FILE_NOT_FOUND:		return ENOENT;
	case ERROR_PATH_NOT_FOUND:		return ENOENT;
	case ERROR_ACCESS_DENIED:		return EACCES;
	case ERROR_INVALID_HANDLE:		return EBADF;
	case ERROR_NOT_ENOUGH_MEMORY:	return ENOMEM;
	case ERROR_INVALID_DATA:		return EINVAL;
	case ERROR_OUTOFMEMORY:			return ENOMEM;
	case ERROR_INVALID_DRIVE:		return ENODEV;
	case ERROR_NOT_SAME_DEVICE:		return EXDEV;
	case ERROR_WRITE_PROTECT:		return EROFS;
	case ERROR_BAD_UNIT:			return ENODEV;
	case ERROR_SHARING_VIOLATION:	return EACCES;
	case ERROR_LOCK_VIOLATION:		return EACCES;
	case ERROR_SHARING_BUFFER_EXCEEDED:	return ENOLCK;
	case ERROR_HANDLE_DISK_FULL:	return ENOSPC;
	case ERROR_NOT_SUPPORTED:		return ENOSYS;
	case ERROR_FILE_EXISTS:			return EEXIST;
	case ERROR_CANNOT_MAKE:			return EPERM;
	case ERROR_INVALID_PARAMETER:	return EINVAL;
	case ERROR_NO_PROC_SLOTS:		return EAGAIN;
	case ERROR_BROKEN_PIPE:			return EPIPE;
	case ERROR_OPEN_FAILED:			return EIO;
	case ERROR_NO_MORE_SEARCH_HANDLES:	return ENFILE;
	case ERROR_CALL_NOT_IMPLEMENTED:	return ENOSYS;
	case ERROR_INVALID_NAME:		return ENOENT;
	case ERROR_WAIT_NO_CHILDREN:	return ECHILD;
	case ERROR_CHILD_NOT_COMPLETE:	return EBUSY;
	case ERROR_DIR_NOT_EMPTY:		return ENOTEMPTY;
	case ERROR_SIGNAL_REFUSED:		return EIO;
	case ERROR_BAD_PATHNAME:		return ENOENT;
	case ERROR_SIGNAL_PENDING:		return EBUSY;
	case ERROR_MAX_THRDS_REACHED:	return EAGAIN;
	case ERROR_BUSY:				return EBUSY;
	case ERROR_ALREADY_EXISTS:		return EEXIST;
	case ERROR_NO_SIGNAL_SENT:		return EIO;
	case ERROR_FILENAME_EXCED_RANGE:	return EINVAL;
	case ERROR_META_EXPANSION_TOO_LONG:	return EINVAL;
	case ERROR_INVALID_SIGNAL_NUMBER:	return EINVAL;
	case ERROR_THREAD_1_INACTIVE:	return EINVAL;
	case ERROR_BAD_PIPE:			return EINVAL;
	case ERROR_PIPE_BUSY:			return EBUSY;
	case ERROR_NO_DATA:				return EPIPE;
	case ERROR_MORE_DATA:			return EAGAIN;
	case ERROR_DIRECTORY:			return ENOTDIR;
	case ERROR_PIPE_CONNECTED:		return EBUSY;
	case ERROR_NO_TOKEN:			return EINVAL;
	case ERROR_PROCESS_ABORTED:		return EFAULT;
	case ERROR_BAD_DEVICE:			return ENODEV;
	case ERROR_BAD_USERNAME:		return EINVAL;
	case ERROR_OPEN_FILES:			return EAGAIN;
	case ERROR_ACTIVE_CONNECTIONS:	return EAGAIN;
	case ERROR_DEVICE_IN_USE:		return EAGAIN;
	case ERROR_INVALID_AT_INTERRUPT_TIME:	return EINTR;
	case ERROR_IO_DEVICE:			return EIO;
	case ERROR_NOT_OWNER:			return EPERM;
	case ERROR_END_OF_MEDIA:		return ENOSPC;
	case ERROR_EOM_OVERFLOW:		return ENOSPC;
	case ERROR_BEGINNING_OF_MEDIA:	return ESPIPE;
	case ERROR_SETMARK_DETECTED:	return ESPIPE;
	case ERROR_NO_DATA_DETECTED:	return ENOSPC;
	case ERROR_POSSIBLE_DEADLOCK:	return EDEADLOCK;
	case ERROR_CRC:					return EIO;
	case ERROR_NEGATIVE_SEEK:		return EINVAL;
	case ERROR_DISK_FULL:			return ENOSPC;
	case ERROR_NOACCESS:			return EFAULT;
	case ERROR_FILE_INVALID:		return ENXIO;
	}

	return winerr;
}

int sync_file_range(int fd, off64_t offset, off64_t nbytes,
			   unsigned int flags)
{
	errno = ENOSYS;
	return -1;
}

static int fio_windowsaio_init(struct thread_data *td)
{
	struct windowsaio_data *wd;
	HANDLE hKernel32Dll;
	int rc = 0;

	wd = malloc(sizeof(struct windowsaio_data));
	if (wd != NULL)
		ZeroMemory(wd, sizeof(struct windowsaio_data));
	else
		rc = 1;

	if (!rc) {
		wd->aio_events = malloc(td->o.iodepth * sizeof(struct io_u*));
		if (wd->aio_events == NULL)
			rc = 1;
	}

	if (!rc) {
		/* Create an auto-reset event */
		wd->iocomplete_event = CreateEvent(NULL, FALSE, FALSE, NULL);
		if (wd->iocomplete_event == NULL)
			rc = 1;
	}

	if (rc) {
		if (wd != NULL) {
			if (wd->aio_events != NULL)
				free(wd->aio_events);

			free(wd);
		}
	}

	hKernel32Dll = GetModuleHandle("kernel32.dll");
	wd->pCancelIoEx = (CANCELIOEX)GetProcAddress(hKernel32Dll, "CancelIoEx");
	td->io_ops->data = wd;

	return rc;
}

static void fio_windowsaio_cleanup(struct thread_data *td)
{
	struct windowsaio_data *wd;

	wd = td->io_ops->data;

	if (wd != NULL) {
		wd->iothread_running = FALSE;
		WaitForSingleObject(wd->iothread, INFINITE);

		CloseHandle(wd->iothread);
		CloseHandle(wd->iocomplete_event);

		free(wd->aio_events);
		free(wd);

		td->io_ops->data = NULL;
	}
}


static int fio_windowsaio_open_file(struct thread_data *td, struct fio_file *f)
{
	int rc = 0;
	HANDLE hFile;
	DWORD flags = FILE_FLAG_POSIX_SEMANTICS | FILE_FLAG_OVERLAPPED;
	DWORD sharemode = FILE_SHARE_READ | FILE_SHARE_WRITE;
	DWORD openmode = OPEN_ALWAYS;
	DWORD access;

	dprint(FD_FILE, "fd open %s\n", f->file_name);

	if (f->filetype == FIO_TYPE_PIPE) {
		log_err("fio: windowsaio doesn't support pipes\n");
		return 1;
	}

	if (!strcmp(f->file_name, "-")) {
		log_err("fio: can't read/write to stdin/out\n");
		return 1;
	}

	if (td->o.odirect)
		flags |= FILE_FLAG_NO_BUFFERING;
	if (td->o.sync_io)
		flags |= FILE_FLAG_WRITE_THROUGH;

	/*
	 * Inform Windows whether we're going to be doing sequential or
	 * random io so it can tune the Cache Manager
	 */
	if (td->o.td_ddir == TD_DDIR_READ  ||
		td->o.td_ddir == TD_DDIR_WRITE)
		flags |= FILE_FLAG_SEQUENTIAL_SCAN;
	else
		flags |= FILE_FLAG_RANDOM_ACCESS;

	if (!td_write(td) || read_only)
		access = GENERIC_READ;
	else
		access = (GENERIC_READ | GENERIC_WRITE);

	if (td->o.create_on_open)
		openmode = OPEN_ALWAYS;
	else
		openmode = OPEN_EXISTING;

	f->hFile = CreateFile(f->file_name, access, sharemode,
		NULL, openmode, flags, NULL);

	if (f->hFile == INVALID_HANDLE_VALUE)
		rc = 1;

	/* Only set up the completion port and thread if we're not just
	 * querying the device size */
	if (!rc && td->io_ops->data != NULL) {
		struct thread_ctx *ctx;
		struct windowsaio_data *wd;

		hFile = CreateIoCompletionPort(f->hFile, NULL, 0, 0);

		wd = td->io_ops->data;
		wd->iothread_running = TRUE;

		if (!rc) {
			ctx = malloc(sizeof(struct thread_ctx));
			ctx->iocp = hFile;
			ctx->wd = wd;

			wd->iothread = CreateThread(NULL, 0, IoCompletionRoutine, ctx, 0, NULL);
		}

		if (rc || wd->iothread == NULL)
			rc = 1;
	}

	return rc;
}

static int fio_windowsaio_close_file(struct thread_data fio_unused *td, struct fio_file *f)
{
	int rc = 0;

	dprint(FD_FILE, "fd close %s\n", f->file_name);

	if (f->hFile != INVALID_HANDLE_VALUE) {
		if (!CloseHandle(f->hFile))
			rc = 1;
	}

	f->hFile = INVALID_HANDLE_VALUE;
	return rc;
}

static BOOL timeout_expired(DWORD start_count, DWORD end_count)
{
	BOOL expired = FALSE;
	DWORD current_time;

	current_time = GetTickCount();

	if ((end_count > start_count) && current_time >= end_count)
		expired = TRUE;
	else if (current_time < start_count && current_time > end_count)
		expired = TRUE;

	return expired;
}

static struct io_u* fio_windowsaio_event(struct thread_data *td, int event)
{
	struct windowsaio_data *wd = td->io_ops->data;
	return wd->aio_events[event];
}

static int fio_windowsaio_getevents(struct thread_data *td, unsigned int min,
				    unsigned int max, struct timespec *t)
{
	struct windowsaio_data *wd = td->io_ops->data;
	struct flist_head *entry;
	unsigned int dequeued = 0;
	struct io_u *io_u;
	struct fio_overlapped *fov;
	DWORD start_count = 0;
	DWORD end_count = 0;
	DWORD status;
	DWORD mswait = 250;

	if (t != NULL) {
		mswait = (t->tv_sec * 1000) + (t->tv_nsec / 1000000);
		start_count = GetTickCount();
		end_count = start_count + (t->tv_sec * 1000) + (t->tv_nsec / 1000000);
	}

	do {
		flist_for_each(entry, &td->io_u_busylist) {
			io_u = flist_entry(entry, struct io_u, list);
			fov = (struct fio_overlapped*)io_u->engine_data;

			if (fov->io_complete) {
				fov->io_complete = FALSE;
				ResetEvent(fov->o.hEvent);
				wd->aio_events[dequeued] = io_u;
				dequeued++;
			}

			if (dequeued >= min)
				break;
		}

		if (dequeued < min) {
			status = WaitForSingleObject(wd->iocomplete_event, mswait);
			if (status != WAIT_OBJECT_0 && dequeued >= min)
			    break;
		}

		if (dequeued >= min || (t != NULL && timeout_expired(start_count, end_count)))
			break;
	} while (1);

	return dequeued;
}

static int fio_windowsaio_queue(struct thread_data *td, struct io_u *io_u)
{
	struct fio_overlapped *o = io_u->engine_data;
	LPOVERLAPPED lpOvl = &o->o;
	DWORD iobytes;
	BOOL success = FALSE;
	int rc = FIO_Q_COMPLETED;

	fio_ro_check(td, io_u);

	lpOvl->Internal = STATUS_PENDING;
	lpOvl->InternalHigh = 0;
	lpOvl->Offset = io_u->offset & 0xFFFFFFFF;
	lpOvl->OffsetHigh = io_u->offset >> 32;

	switch (io_u->ddir) {
	case DDIR_WRITE:
		success = WriteFile(io_u->file->hFile, io_u->xfer_buf, io_u->xfer_buflen, &iobytes, lpOvl);
		break;
	case DDIR_READ:
		success = ReadFile(io_u->file->hFile, io_u->xfer_buf, io_u->xfer_buflen, &iobytes, lpOvl);
		break;
	case DDIR_SYNC:
	case DDIR_DATASYNC:
	case DDIR_SYNC_FILE_RANGE:
		success = FlushFileBuffers(io_u->file->hFile);
		if (!success)
		    io_u->error = win_to_poxix_error(GetLastError());

		return FIO_Q_COMPLETED;
		break;
	case DDIR_TRIM:
		log_err("manual TRIM isn't supported on Windows");
		io_u->error = 1;
		io_u->resid = io_u->xfer_buflen;
		return FIO_Q_COMPLETED;
		break;
	default:
		assert(0);
		break;
	}

	if (success || GetLastError() == ERROR_IO_PENDING)
		rc = FIO_Q_QUEUED;
	else {
		io_u->error = win_to_poxix_error(GetLastError());
		io_u->resid = io_u->xfer_buflen;
	}

	return rc;
}

/* Runs as a thread and waits for queued IO to complete */
static DWORD WINAPI IoCompletionRoutine(LPVOID lpParameter)
{
	OVERLAPPED *ovl;
	struct fio_overlapped *fov;
	struct io_u *io_u;
	struct windowsaio_data *wd;
	struct thread_ctx *ctx;
	ULONG_PTR ulKey = 0;
	DWORD bytes;

	ctx = (struct thread_ctx*)lpParameter;
	wd = ctx->wd;

	do {
		if (!GetQueuedCompletionStatus(ctx->iocp, &bytes, &ulKey, &ovl, 250) && ovl == NULL)
			continue;

		fov = CONTAINING_RECORD(ovl, struct fio_overlapped, o);
		io_u = fov->io_u;

		if (ovl->Internal == ERROR_SUCCESS) {
			io_u->resid = io_u->xfer_buflen - ovl->InternalHigh;
			io_u->error = 0;
		} else {
			io_u->resid = io_u->xfer_buflen;
			io_u->error = win_to_poxix_error(GetLastError());
		}

		fov->io_complete = TRUE;
		SetEvent(wd->iocomplete_event);
	} while (ctx->wd->iothread_running);

	CloseHandle(ctx->iocp);
	free(ctx);
	return 0;
}

static int fio_windowsaio_cancel(struct thread_data *td,
			       struct io_u *io_u)
{
	int rc = 0;

	struct windowsaio_data *wd = td->io_ops->data;

	/* If we're running on Vista or newer, we can cancel individual IO requests */
	if (wd->pCancelIoEx != NULL) {
		struct fio_overlapped *ovl = io_u->engine_data;

		if (!wd->pCancelIoEx(io_u->file->hFile, &ovl->o))
			rc = 1;
	} else
		rc = 1;

	return rc;
}

static void fio_windowsaio_io_u_free(struct thread_data *td, struct io_u *io_u)
{
	struct fio_overlapped *o = io_u->engine_data;

	if (o) {
		CloseHandle(o->o.hEvent);
		io_u->engine_data = NULL;
		free(o);
	}
}

static int fio_windowsaio_io_u_init(struct thread_data *td, struct io_u *io_u)
{
	struct fio_overlapped *o;

	o = malloc(sizeof(*o));
	o->io_complete = FALSE:
	o->io_u = io_u;
	o->o.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
	if (!o->o.hEvent) {
		free(o);
		return 1;
	}

	io_u->engine_data = o;
	return 0;
}

static struct ioengine_ops ioengine = {
	.name		= "windowsaio",
	.version	= FIO_IOOPS_VERSION,
	.init		= fio_windowsaio_init,
	.queue		= fio_windowsaio_queue,
	.cancel		= fio_windowsaio_cancel,
	.getevents	= fio_windowsaio_getevents,
	.event		= fio_windowsaio_event,
	.cleanup	= fio_windowsaio_cleanup,
	.open_file	= fio_windowsaio_open_file,
	.close_file	= fio_windowsaio_close_file,
	.get_file_size	= generic_get_file_size,
	.io_u_init	= fio_windowsaio_io_u_init,
	.io_u_free	= fio_windowsaio_io_u_free,
};

static void fio_init fio_posixaio_register(void)
{
	register_ioengine(&ioengine);
}

static void fio_exit fio_posixaio_unregister(void)
{
	unregister_ioengine(&ioengine);
}
Commit	Line	Data
ecc314ba BC	1	/*
ecc314ba BC	2	* Native Windows async IO engine
93bcfd20	3	* Copyright (C) 2012 Bruce Cran <bruce@cran.org.uk>
ecc314ba BC	4	*/
ecc314ba BC	5
ecc314ba BC	6	#include <stdio.h>
	7	#include <stdlib.h>
	8	#include <unistd.h>
	9	#include <signal.h>
	10	#include <errno.h>
	11	#include <windows.h>
	12
	13	#include "../fio.h"
	14
ea4500d8 BC	15	typedef BOOL (WINAPI *CANCELIOEX)(HANDLE hFile, LPOVERLAPPED lpOverlapped);
ea4500d8 BC	16
66c098b8 BC	17	int geterrno_from_win_error (DWORD code, int deferrno);
66c098b8 BC	18
67897036 BC	19	struct fio_overlapped {
	20	OVERLAPPED o;
	21	struct io_u *io_u;
	22	BOOL io_complete;
67897036	23	};
ecc314ba	24
9b836561	25	struct windowsaio_data {
9b836561	26	struct io_u **aio_events;
67897036	27	HANDLE iothread;
9b836561	28	HANDLE iocomplete_event;
ea4500d8	29	CANCELIOEX pCancelIoEx;
67897036	30	BOOL iothread_running;
9b836561 BC	31	};
9b836561 BC	32
ecc314ba	33	struct thread_ctx {
9b836561	34	HANDLE iocp;
ecc314ba BC	35	struct windowsaio_data *wd;
	36	};
	37
ecc314ba BC	38	static int fio_windowsaio_cancel(struct thread_data *td,
ecc314ba BC	39	struct io_u *io_u);
67897036	40	static BOOL timeout_expired(DWORD start_count, DWORD end_count);
ecc314ba BC	41	static int fio_windowsaio_getevents(struct thread_data *td, unsigned int min,
	42	unsigned int max, struct timespec *t);
	43	static struct io_u fio_windowsaio_event(struct thread_data td, int event);
	44	static int fio_windowsaio_queue(struct thread_data *td,
	45	struct io_u *io_u);
	46	static void fio_windowsaio_cleanup(struct thread_data *td);
	47	static DWORD WINAPI IoCompletionRoutine(LPVOID lpParameter);
	48	static int fio_windowsaio_init(struct thread_data *td);
	49	static int fio_windowsaio_open_file(struct thread_data td, struct fio_file f);
	50	static int fio_windowsaio_close_file(struct thread_data fio_unused td, struct fio_file f);
66c098b8 BC	51	static int win_to_poxix_error(DWORD winerr);
	52
	53	static int win_to_poxix_error(DWORD winerr)
	54	{
	55	switch (winerr)
	56	{
	57	case ERROR_FILE_NOT_FOUND: return ENOENT;
	58	case ERROR_PATH_NOT_FOUND: return ENOENT;
	59	case ERROR_ACCESS_DENIED: return EACCES;
	60	case ERROR_INVALID_HANDLE: return EBADF;
	61	case ERROR_NOT_ENOUGH_MEMORY: return ENOMEM;
	62	case ERROR_INVALID_DATA: return EINVAL;
	63	case ERROR_OUTOFMEMORY: return ENOMEM;
	64	case ERROR_INVALID_DRIVE: return ENODEV;
	65	case ERROR_NOT_SAME_DEVICE: return EXDEV;
	66	case ERROR_WRITE_PROTECT: return EROFS;
	67	case ERROR_BAD_UNIT: return ENODEV;
	68	case ERROR_SHARING_VIOLATION: return EACCES;
	69	case ERROR_LOCK_VIOLATION: return EACCES;
	70	case ERROR_SHARING_BUFFER_EXCEEDED: return ENOLCK;
	71	case ERROR_HANDLE_DISK_FULL: return ENOSPC;
	72	case ERROR_NOT_SUPPORTED: return ENOSYS;
	73	case ERROR_FILE_EXISTS: return EEXIST;
	74	case ERROR_CANNOT_MAKE: return EPERM;
	75	case ERROR_INVALID_PARAMETER: return EINVAL;
	76	case ERROR_NO_PROC_SLOTS: return EAGAIN;
	77	case ERROR_BROKEN_PIPE: return EPIPE;
	78	case ERROR_OPEN_FAILED: return EIO;
	79	case ERROR_NO_MORE_SEARCH_HANDLES: return ENFILE;
	80	case ERROR_CALL_NOT_IMPLEMENTED: return ENOSYS;
	81	case ERROR_INVALID_NAME: return ENOENT;
	82	case ERROR_WAIT_NO_CHILDREN: return ECHILD;
	83	case ERROR_CHILD_NOT_COMPLETE: return EBUSY;
	84	case ERROR_DIR_NOT_EMPTY: return ENOTEMPTY;
	85	case ERROR_SIGNAL_REFUSED: return EIO;
	86	case ERROR_BAD_PATHNAME: return ENOENT;
	87	case ERROR_SIGNAL_PENDING: return EBUSY;
	88	case ERROR_MAX_THRDS_REACHED: return EAGAIN;
	89	case ERROR_BUSY: return EBUSY;
	90	case ERROR_ALREADY_EXISTS: return EEXIST;
	91	case ERROR_NO_SIGNAL_SENT: return EIO;
	92	case ERROR_FILENAME_EXCED_RANGE: return EINVAL;
	93	case ERROR_META_EXPANSION_TOO_LONG: return EINVAL;
	94	case ERROR_INVALID_SIGNAL_NUMBER: return EINVAL;
	95	case ERROR_THREAD_1_INACTIVE: return EINVAL;
	96	case ERROR_BAD_PIPE: return EINVAL;
	97	case ERROR_PIPE_BUSY: return EBUSY;
	98	case ERROR_NO_DATA: return EPIPE;
	99	case ERROR_MORE_DATA: return EAGAIN;
	100	case ERROR_DIRECTORY: return ENOTDIR;
	101	case ERROR_PIPE_CONNECTED: return EBUSY;
	102	case ERROR_NO_TOKEN: return EINVAL;
	103	case ERROR_PROCESS_ABORTED: return EFAULT;
	104	case ERROR_BAD_DEVICE: return ENODEV;
	105	case ERROR_BAD_USERNAME: return EINVAL;
	106	case ERROR_OPEN_FILES: return EAGAIN;
	107	case ERROR_ACTIVE_CONNECTIONS: return EAGAIN;
	108	case ERROR_DEVICE_IN_USE: return EAGAIN;
	109	case ERROR_INVALID_AT_INTERRUPT_TIME: return EINTR;
	110	case ERROR_IO_DEVICE: return EIO;
	111	case ERROR_NOT_OWNER: return EPERM;
	112	case ERROR_END_OF_MEDIA: return ENOSPC;
	113	case ERROR_EOM_OVERFLOW: return ENOSPC;
	114	case ERROR_BEGINNING_OF_MEDIA: return ESPIPE;
115	case ERROR_SETMARK_DETECTED: return ESPIPE;
116	case ERROR_NO_DATA_DETECTED: return ENOSPC;
117	case ERROR_POSSIBLE_DEADLOCK: return EDEADLOCK;
118	case ERROR_CRC: return EIO;
119	case ERROR_NEGATIVE_SEEK: return EINVAL;
120	case ERROR_DISK_FULL: return ENOSPC;
121	case ERROR_NOACCESS: return EFAULT;
122	case ERROR_FILE_INVALID: return ENXIO;
123	}
124
125	return winerr;
126	}
ecc314ba	127
9b836561 BC	128	int sync_file_range(int fd, off64_t offset, off64_t nbytes,
	129	unsigned int flags)
	130	{
	131	errno = ENOSYS;
	132	return -1;
	133	}
	134
ecc314ba BC	135	static int fio_windowsaio_init(struct thread_data *td)
ecc314ba BC	136	{
ecc314ba	137	struct windowsaio_data *wd;
ea4500d8	138	HANDLE hKernel32Dll;
9b836561	139	int rc = 0;
ecc314ba	140
ecc314ba	141	wd = malloc(sizeof(struct windowsaio_data));
9b836561 BC	142	if (wd != NULL)
	143	ZeroMemory(wd, sizeof(struct windowsaio_data));
	144	else
	145	rc = 1;
ecc314ba	146
9b836561 BC	147	if (!rc) {
	148	wd->aio_events = malloc(td->o.iodepth * sizeof(struct io_u*));
	149	if (wd->aio_events == NULL)
	150	rc = 1;
e4db9fec BC	151	}
e4db9fec BC	152
9b836561 BC	153	if (!rc) {
	154	/* Create an auto-reset event */
	155	wd->iocomplete_event = CreateEvent(NULL, FALSE, FALSE, NULL);
	156	if (wd->iocomplete_event == NULL)
	157	rc = 1;
	158	}
	159
9b836561	160	if (rc) {
9b836561	161	if (wd != NULL) {
9b836561 BC	162	if (wd->aio_events != NULL)
	163	free(wd->aio_events);
	164
	165	free(wd);
	166	}
	167	}
ecc314ba	168
ea4500d8	169	hKernel32Dll = GetModuleHandle("kernel32.dll");
93bcfd20	170	wd->pCancelIoEx = (CANCELIOEX)GetProcAddress(hKernel32Dll, "CancelIoEx");
ecc314ba	171	td->io_ops->data = wd;
93bcfd20	172
4e79098f	173	return rc;
ecc314ba BC	174	}
ecc314ba BC	175
67897036 BC	176	static void fio_windowsaio_cleanup(struct thread_data *td)
67897036 BC	177	{
67897036 BC	178	struct windowsaio_data *wd;
	179
	180	wd = td->io_ops->data;
	181
	182	if (wd != NULL) {
40c5db35 JA	183	wd->iothread_running = FALSE;
40c5db35 JA	184	WaitForSingleObject(wd->iothread, INFINITE);
67897036 BC	185
	186	CloseHandle(wd->iothread);
	187	CloseHandle(wd->iocomplete_event);
	188
67897036	189	free(wd->aio_events);
67897036 BC	190	free(wd);
	191
	192	td->io_ops->data = NULL;
	193	}
	194	}
	195
	196
ecc314ba BC	197	static int fio_windowsaio_open_file(struct thread_data td, struct fio_file f)
	198	{
	199	int rc = 0;
	200	HANDLE hFile;
4e79098f	201	DWORD flags = FILE_FLAG_POSIX_SEMANTICS \| FILE_FLAG_OVERLAPPED;
ecc314ba BC	202	DWORD sharemode = FILE_SHARE_READ \| FILE_SHARE_WRITE;
	203	DWORD openmode = OPEN_ALWAYS;
	204	DWORD access;
	205
	206	dprint(FD_FILE, "fd open %s\n", f->file_name);
	207
ecc314ba BC	208	if (f->filetype == FIO_TYPE_PIPE) {
	209	log_err("fio: windowsaio doesn't support pipes\n");
	210	return 1;
	211	}
	212
	213	if (!strcmp(f->file_name, "-")) {
	214	log_err("fio: can't read/write to stdin/out\n");
	215	return 1;
	216	}
	217
	218	if (td->o.odirect)
	219	flags \|= FILE_FLAG_NO_BUFFERING;
	220	if (td->o.sync_io)
	221	flags \|= FILE_FLAG_WRITE_THROUGH;
	222
93bcfd20 BC	223	/*
	224	* Inform Windows whether we're going to be doing sequential or
	225	* random io so it can tune the Cache Manager
	226	*/
ecc314ba	227	if (td->o.td_ddir == TD_DDIR_READ \|\|
ea4500d8	228	td->o.td_ddir == TD_DDIR_WRITE)
ecc314ba	229	flags \|= FILE_FLAG_SEQUENTIAL_SCAN;
ecc314ba	230	else
ecc314ba	231	flags \|= FILE_FLAG_RANDOM_ACCESS;
ecc314ba	232
ea4500d8	233	if (!td_write(td) \|\| read_only)
ecc314ba BC	234	access = GENERIC_READ;
	235	else
	236	access = (GENERIC_READ \| GENERIC_WRITE);
	237
93bcfd20	238	if (td->o.create_on_open)
ecc314ba BC	239	openmode = OPEN_ALWAYS;
	240	else
	241	openmode = OPEN_EXISTING;
	242
	243	f->hFile = CreateFile(f->file_name, access, sharemode,
	244	NULL, openmode, flags, NULL);
	245
4e79098f	246	if (f->hFile == INVALID_HANDLE_VALUE)
ecc314ba	247	rc = 1;
ecc314ba	248
93bcfd20	249	/* Only set up the completion port and thread if we're not just
ecc314ba	250	* querying the device size */
40c5db35	251	if (!rc && td->io_ops->data != NULL) {
ecc314ba	252	struct thread_ctx *ctx;
40c5db35	253	struct windowsaio_data *wd;
ecc314ba	254
40c5db35	255	hFile = CreateIoCompletionPort(f->hFile, NULL, 0, 0);
ea4500d8	256
40c5db35	257	wd = td->io_ops->data;
9b836561	258	wd->iothread_running = TRUE;
ecc314ba	259
9b836561 BC	260	if (!rc) {
	261	ctx = malloc(sizeof(struct thread_ctx));
	262	ctx->iocp = hFile;
	263	ctx->wd = wd;
	264
	265	wd->iothread = CreateThread(NULL, 0, IoCompletionRoutine, ctx, 0, NULL);
	266	}
ecc314ba	267
4e79098f	268	if (rc \|\| wd->iothread == NULL)
ecc314ba	269	rc = 1;
ecc314ba BC	270	}
ecc314ba BC	271
ecc314ba BC	272	return rc;
	273	}
	274
	275	static int fio_windowsaio_close_file(struct thread_data fio_unused td, struct fio_file f)
	276	{
4e79098f	277	int rc = 0;
1e42cc3d	278
9b836561 BC	279	dprint(FD_FILE, "fd close %s\n", f->file_name);
9b836561 BC	280
ecc314ba	281	if (f->hFile != INVALID_HANDLE_VALUE) {
9b836561	282	if (!CloseHandle(f->hFile))
4e79098f	283	rc = 1;
ecc314ba BC	284	}
	285
	286	f->hFile = INVALID_HANDLE_VALUE;
4e79098f	287	return rc;
ecc314ba BC	288	}
ecc314ba BC	289
67897036 BC	290	static BOOL timeout_expired(DWORD start_count, DWORD end_count)
	291	{
	292	BOOL expired = FALSE;
	293	DWORD current_time;
	294
	295	current_time = GetTickCount();
	296
	297	if ((end_count > start_count) && current_time >= end_count)
	298	expired = TRUE;
	299	else if (current_time < start_count && current_time > end_count)
	300	expired = TRUE;
	301
	302	return expired;
	303	}
	304
	305	static struct io_u* fio_windowsaio_event(struct thread_data *td, int event)
	306	{
	307	struct windowsaio_data *wd = td->io_ops->data;
	308	return wd->aio_events[event];
	309	}
	310
	311	static int fio_windowsaio_getevents(struct thread_data *td, unsigned int min,
	312	unsigned int max, struct timespec *t)
	313	{
	314	struct windowsaio_data *wd = td->io_ops->data;
	315	struct flist_head *entry;
	316	unsigned int dequeued = 0;
	317	struct io_u *io_u;
	318	struct fio_overlapped *fov;
	319	DWORD start_count = 0;
	320	DWORD end_count = 0;
	321	DWORD status;
	322	DWORD mswait = 250;
	323
	324	if (t != NULL) {
	325	mswait = (t->tv_sec * 1000) + (t->tv_nsec / 1000000);
	326	start_count = GetTickCount();
	327	end_count = start_count + (t->tv_sec * 1000) + (t->tv_nsec / 1000000);
	328	}
	329
	330	do {
	331	flist_for_each(entry, &td->io_u_busylist) {
	332	io_u = flist_entry(entry, struct io_u, list);
	333	fov = (struct fio_overlapped*)io_u->engine_data;
	334
	335	if (fov->io_complete) {
40c5db35	336	fov->io_complete = FALSE;
f9a58c2a	337	ResetEvent(fov->o.hEvent);
67897036 BC	338	wd->aio_events[dequeued] = io_u;
	339	dequeued++;
	340	}
	341
	342	if (dequeued >= min)
	343	break;
	344	}
	345
40c5db35	346	if (dequeued < min) {
67897036	347	status = WaitForSingleObject(wd->iocomplete_event, mswait);
f9a58c2a	348	if (status != WAIT_OBJECT_0 && dequeued >= min)
67897036 BC	349	break;
	350	}
	351
	352	if (dequeued >= min \|\| (t != NULL && timeout_expired(start_count, end_count)))
	353	break;
	354	} while (1);
	355
	356	return dequeued;
	357	}
	358
40c5db35	359	static int fio_windowsaio_queue(struct thread_data td, struct io_u io_u)
67897036	360	{
c73ed246 JA	361	struct fio_overlapped *o = io_u->engine_data;
c73ed246 JA	362	LPOVERLAPPED lpOvl = &o->o;
67897036	363	DWORD iobytes;
93bcfd20	364	BOOL success = FALSE;
67897036 BC	365	int rc = FIO_Q_COMPLETED;
	366
	367	fio_ro_check(td, io_u);
	368
4e79098f BC	369	lpOvl->Internal = STATUS_PENDING;
	370	lpOvl->InternalHigh = 0;
	371	lpOvl->Offset = io_u->offset & 0xFFFFFFFF;
	372	lpOvl->OffsetHigh = io_u->offset >> 32;
67897036 BC	373
67897036 BC	374	switch (io_u->ddir) {
40c5db35	375	case DDIR_WRITE:
67897036 BC	376	success = WriteFile(io_u->file->hFile, io_u->xfer_buf, io_u->xfer_buflen, &iobytes, lpOvl);
	377	break;
	378	case DDIR_READ:
	379	success = ReadFile(io_u->file->hFile, io_u->xfer_buf, io_u->xfer_buflen, &iobytes, lpOvl);
	380	break;
	381	case DDIR_SYNC:
	382	case DDIR_DATASYNC:
	383	case DDIR_SYNC_FILE_RANGE:
	384	success = FlushFileBuffers(io_u->file->hFile);
	385	if (!success)
66c098b8	386	io_u->error = win_to_poxix_error(GetLastError());
67897036 BC	387
	388	return FIO_Q_COMPLETED;
	389	break;
	390	case DDIR_TRIM:
	391	log_err("manual TRIM isn't supported on Windows");
	392	io_u->error = 1;
	393	io_u->resid = io_u->xfer_buflen;
	394	return FIO_Q_COMPLETED;
	395	break;
	396	default:
	397	assert(0);
93bcfd20	398	break;
67897036 BC	399	}
67897036 BC	400
40c5db35	401	if (success \|\| GetLastError() == ERROR_IO_PENDING)
67897036	402	rc = FIO_Q_QUEUED;
40c5db35	403	else {
66c098b8	404	io_u->error = win_to_poxix_error(GetLastError());
67897036 BC	405	io_u->resid = io_u->xfer_buflen;
	406	}
	407
	408	return rc;
	409	}
	410
	411	/* Runs as a thread and waits for queued IO to complete */
	412	static DWORD WINAPI IoCompletionRoutine(LPVOID lpParameter)
	413	{
	414	OVERLAPPED *ovl;
	415	struct fio_overlapped *fov;
	416	struct io_u *io_u;
	417	struct windowsaio_data *wd;
	418	struct thread_ctx *ctx;
	419	ULONG_PTR ulKey = 0;
	420	DWORD bytes;
	421
	422	ctx = (struct thread_ctx*)lpParameter;
	423	wd = ctx->wd;
	424
	425	do {
66c098b8	426	if (!GetQueuedCompletionStatus(ctx->iocp, &bytes, &ulKey, &ovl, 250) && ovl == NULL)
67897036 BC	427	continue;
	428
	429	fov = CONTAINING_RECORD(ovl, struct fio_overlapped, o);
	430	io_u = fov->io_u;
	431
	432	if (ovl->Internal == ERROR_SUCCESS) {
	433	io_u->resid = io_u->xfer_buflen - ovl->InternalHigh;
	434	io_u->error = 0;
	435	} else {
	436	io_u->resid = io_u->xfer_buflen;
66c098b8	437	io_u->error = win_to_poxix_error(GetLastError());
67897036 BC	438	}
67897036 BC	439
40c5db35	440	fov->io_complete = TRUE;
67897036 BC	441	SetEvent(wd->iocomplete_event);
	442	} while (ctx->wd->iothread_running);
	443
	444	CloseHandle(ctx->iocp);
	445	free(ctx);
	446	return 0;
	447	}
	448
	449	static int fio_windowsaio_cancel(struct thread_data *td,
	450	struct io_u *io_u)
	451	{
	452	int rc = 0;
	453
	454	struct windowsaio_data *wd = td->io_ops->data;
	455
	456	/* If we're running on Vista or newer, we can cancel individual IO requests */
	457	if (wd->pCancelIoEx != NULL) {
	458	struct fio_overlapped *ovl = io_u->engine_data;
40c5db35	459
67897036 BC	460	if (!wd->pCancelIoEx(io_u->file->hFile, &ovl->o))
	461	rc = 1;
	462	} else
	463	rc = 1;
	464
	465	return rc;
	466	}
	467
c73ed246 JA	468	static void fio_windowsaio_io_u_free(struct thread_data td, struct io_u io_u)
	469	{
	470	struct fio_overlapped *o = io_u->engine_data;
	471
	472	if (o) {
	473	CloseHandle(o->o.hEvent);
	474	io_u->engine_data = NULL;
	475	free(o);
	476	}
	477	}
	478
	479	static int fio_windowsaio_io_u_init(struct thread_data td, struct io_u io_u)
	480	{
	481	struct fio_overlapped *o;
	482
	483	o = malloc(sizeof(*o));
	484	o->io_complete = FALSE:
	485	o->io_u = io_u;
	486	o->o.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
	487	if (!o->o.hEvent) {
	488	free(o);
	489	return 1;
	490	}
	491
	492	io_u->engine_data = o;
	493	return 0;
	494	}
	495
ecc314ba BC	496	static struct ioengine_ops ioengine = {
	497	.name = "windowsaio",
	498	.version = FIO_IOOPS_VERSION,
	499	.init = fio_windowsaio_init,
	500	.queue = fio_windowsaio_queue,
	501	.cancel = fio_windowsaio_cancel,
	502	.getevents = fio_windowsaio_getevents,
	503	.event = fio_windowsaio_event,
	504	.cleanup = fio_windowsaio_cleanup,
	505	.open_file = fio_windowsaio_open_file,
	506	.close_file = fio_windowsaio_close_file,
c73ed246 JA	507	.get_file_size = generic_get_file_size,
	508	.io_u_init = fio_windowsaio_io_u_init,
	509	.io_u_free = fio_windowsaio_io_u_free,
ecc314ba BC	510	};
	511
	512	static void fio_init fio_posixaio_register(void)
	513	{
	514	register_ioengine(&ioengine);
	515	}
	516
	517	static void fio_exit fio_posixaio_unregister(void)
	518	{
	519	unregister_ioengine(&ioengine);
	520	}