X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=engines%2Fwindowsaio.c;h=3a24fa717da7d3751a616e7a17b338cc9bd5a38f;hp=f66b9a2ec3465dee7c2d6b5b7f4c0e23cb9f9828;hb=10a6b3c67042914fe9d287027bf8792f69e84524;hpb=9b8365618309572d8fd2579c8ea3132db89f843f diff --git a/engines/windowsaio.c b/engines/windowsaio.c index f66b9a2e..3a24fa71 100644 --- a/engines/windowsaio.c +++ b/engines/windowsaio.c @@ -1,6 +1,7 @@ /* - * Native Windows async IO engine - * Copyright (C) 2010 Bruce Cran + * windowsaio engine + * + * IO engine using Windows IO Completion Ports. */ #include @@ -12,23 +13,23 @@ #include "../fio.h" -typedef struct { - OVERLAPPED o; - struct io_u *io_u; -} FIO_OVERLAPPED; +typedef BOOL (WINAPI *CANCELIOEX)(HANDLE hFile, LPOVERLAPPED lpOverlapped); -struct windowsaio_data { - HANDLE *io_handles; - unsigned int io_index; - FIO_OVERLAPPED *ovls; +int geterrno_from_win_error (DWORD code, int deferrno); - HANDLE iothread; - HANDLE iothread_stopped; - BOOL iothread_running; +struct fio_overlapped { + OVERLAPPED o; + struct io_u *io_u; + BOOL io_complete; +}; +struct windowsaio_data { struct io_u **aio_events; + HANDLE iocp; + HANDLE iothread; HANDLE iocomplete_event; - BOOL have_cancelioex; + CANCELIOEX pCancelIoEx; + BOOL iothread_running; }; struct thread_ctx { @@ -36,76 +37,211 @@ struct thread_ctx { struct windowsaio_data *wd; }; -static void PrintError(LPCSTR lpszFunction); static int fio_windowsaio_cancel(struct thread_data *td, - struct io_u *io_u); -static BOOL TimedOut(DWORD start_count, DWORD end_count); + 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); + 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); + 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); -/* CancelIoEx isn't in Cygwin's w32api */ -BOOL WINAPI CancelIoEx( - HANDLE hFile, - LPOVERLAPPED lpOverlapped -); +static int fio_windowsaio_init(struct thread_data *td) +{ + struct windowsaio_data *wd; + HANDLE hKernel32Dll; + int rc = 0; + wd = calloc(1, sizeof(struct windowsaio_data)); + if (wd == NULL) { + log_err("windowsaio: failed to allocate memory for engine data\n"); + rc = 1; + } + if (!rc) { + wd->aio_events = malloc(td->o.iodepth * sizeof(struct io_u*)); + if (wd->aio_events == NULL) { + log_err("windowsaio: failed to allocate memory for aio events list\n"); + rc = 1; + } + } -int sync_file_range(int fd, off64_t offset, off64_t nbytes, - unsigned int flags) + if (!rc) { + /* Create an auto-reset event */ + wd->iocomplete_event = CreateEvent(NULL, FALSE, FALSE, NULL); + if (wd->iocomplete_event == NULL) { + log_err("windowsaio: failed to create io complete event handle\n"); + 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; + + if (!rc) { + struct thread_ctx *ctx; + struct windowsaio_data *wd; + HANDLE hFile; + + hFile = CreateIoCompletionPort(INVALID_HANDLE_VALUE, NULL, 0, 0); + if (hFile == INVALID_HANDLE_VALUE) { + log_err("windowsaio: failed to create io completion port\n"); + rc = 1; + } + + wd = td->io_ops->data; + wd->iothread_running = TRUE; + wd->iocp = hFile; + + if (!rc) + ctx = malloc(sizeof(struct thread_ctx)); + + if (!rc && ctx == NULL) + { + log_err("windowsaio: failed to allocate memory for thread context structure\n"); + CloseHandle(hFile); + rc = 1; + } + + if (!rc) + { + ctx->iocp = hFile; + ctx->wd = wd; + wd->iothread = CreateThread(NULL, 0, IoCompletionRoutine, ctx, 0, NULL); + if (wd->iothread == NULL) + log_err("windowsaio: failed to create io completion thread\n"); + } + + if (rc || wd->iothread == NULL) + rc = 1; + } + + return rc; +} + +static void fio_windowsaio_cleanup(struct thread_data *td) { - errno = ENOSYS; - return -1; + 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 void PrintError(LPCSTR lpszFunction) + +static int fio_windowsaio_open_file(struct thread_data *td, struct fio_file *f) { - // Retrieve the system error message for the last-error code - - LPSTR lpMsgBuf; - DWORD dw = GetLastError(); - - FormatMessage( - FORMAT_MESSAGE_ALLOCATE_BUFFER | - FORMAT_MESSAGE_FROM_SYSTEM | - FORMAT_MESSAGE_IGNORE_INSERTS, - NULL, - dw, - MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), - (LPTSTR)&lpMsgBuf, - 0, NULL ); - - log_err("%s - %s", lpszFunction, lpMsgBuf); - LocalFree(lpMsgBuf); + int rc = 0; + 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("windowsaio: pipes are not supported\n"); + return 1; + } + + if (!strcmp(f->file_name, "-")) { + log_err("windowsaio: 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) { + log_err("windowsaio: failed to open file \"%s\"\n", f->file_name); + 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 windowsaio_data *wd; + + wd = td->io_ops->data; + + if (CreateIoCompletionPort(f->hFile, wd->iocp, 0, 0) == NULL) { + log_err("windowsaio: failed to create io completion port\n"); + rc = 1; + } + } + + return rc; } -static int fio_windowsaio_cancel(struct thread_data *td, - struct io_u *io_u) +static int fio_windowsaio_close_file(struct thread_data fio_unused *td, struct fio_file *f) { int rc = 0; - struct windowsaio_data *wd = td->io_ops->data; + dprint(FD_FILE, "fd close %s\n", f->file_name); - /* If we're running on Vista, we can cancel individual IO requests */ - if (wd->have_cancelioex) { - FIO_OVERLAPPED *ovl = io_u->engine_data; - if (!CancelIoEx(io_u->file->hFile, &ovl->o)) + if (f->hFile != INVALID_HANDLE_VALUE) { + if (!CloseHandle(f->hFile)) { + log_info("windowsaio: failed to close file handle for \"%s\"\n", f->file_name); rc = 1; - } else - rc = 1; + } + } + f->hFile = INVALID_HANDLE_VALUE; return rc; } -static BOOL TimedOut(DWORD start_count, DWORD end_count) +static BOOL timeout_expired(DWORD start_count, DWORD end_count) { BOOL expired = FALSE; DWORD current_time; @@ -120,16 +256,24 @@ static BOOL TimedOut(DWORD start_count, DWORD end_count) 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) + 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; - DWORD start_count = 0, end_count = 0; - BOOL timedout = FALSE; - unsigned int mswait = 100; + 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); @@ -137,128 +281,94 @@ static int fio_windowsaio_getevents(struct thread_data *td, unsigned int min, end_count = start_count + (t->tv_sec * 1000) + (t->tv_nsec / 1000000); } - while (dequeued < min && !timedout) { + 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 (io_u->seen == 1) { - io_u->seen = 2; + if (fov->io_complete) { + fov->io_complete = FALSE; + ResetEvent(fov->o.hEvent); wd->aio_events[dequeued] = io_u; dequeued++; } - if (dequeued == max) + if (dequeued >= min) break; } if (dequeued < min) { - WaitForSingleObject(wd->iocomplete_event, mswait); + status = WaitForSingleObject(wd->iocomplete_event, mswait); + if (status != WAIT_OBJECT_0 && dequeued >= min) + break; } - if (t != NULL && TimedOut(start_count, end_count)) - timedout = TRUE; - } + if (dequeued >= min || (t != NULL && timeout_expired(start_count, end_count))) + break; + } while (1); return dequeued; } -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_queue(struct thread_data *td, - struct io_u *io_u) +static int fio_windowsaio_queue(struct thread_data *td, struct io_u *io_u) { - struct windowsaio_data *wd; + struct fio_overlapped *o = io_u->engine_data; + LPOVERLAPPED lpOvl = &o->o; DWORD iobytes; - BOOL success = TRUE; - int ind; - int rc; + BOOL success = FALSE; + int rc = FIO_Q_COMPLETED; fio_ro_check(td, io_u); - wd = td->io_ops->data; - ind = wd->io_index; - - ResetEvent(wd->io_handles[ind]); - wd->ovls[ind].o.Internal = 0; - wd->ovls[ind].o.InternalHigh = 0; - wd->ovls[ind].o.Offset = io_u->offset & 0xFFFFFFFF; - wd->ovls[ind].o.OffsetHigh = io_u->offset >> 32; - wd->ovls[ind].o.hEvent = wd->io_handles[ind]; - wd->ovls[ind].io_u = io_u; - - io_u->engine_data = &wd->ovls[ind]; - io_u->seen = 0; - - if (io_u->ddir == DDIR_WRITE) { - success = WriteFile(io_u->file->hFile, io_u->xfer_buf, io_u->xfer_buflen, &iobytes, &wd->ovls[ind].o); - } else if (io_u->ddir == DDIR_READ) { - success = ReadFile(io_u->file->hFile, io_u->xfer_buf, io_u->xfer_buflen, &iobytes, &wd->ovls[ind].o); - } else if (io_u->ddir == DDIR_SYNC || - io_u->ddir == DDIR_DATASYNC || - io_u->ddir == DDIR_SYNC_FILE_RANGE) - { - FlushFileBuffers(io_u->file->hFile); + 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) { + log_err("windowsaio: failed to flush file buffers\n"); + io_u->error = win_to_posix_error(GetLastError()); + } + return FIO_Q_COMPLETED; - } else if (io_u->ddir == DDIR_TRIM) { - log_info("explicit TRIM isn't supported on Windows"); + break; + case DDIR_TRIM: + log_err("windowsaio: manual TRIM isn't supported on Windows\n"); + io_u->error = 1; + io_u->resid = io_u->xfer_buflen; return FIO_Q_COMPLETED; - } else + break; + default: assert(0); + break; + } - if (success) { - io_u->seen = 1; - io_u->resid = io_u->xfer_buflen - iobytes; - io_u->error = 0; - rc = FIO_Q_COMPLETED; - } else if (!success && GetLastError() == ERROR_IO_PENDING) { - wd->io_index = (wd->io_index + 1) % (2 * td->o.iodepth); + if (success || GetLastError() == ERROR_IO_PENDING) rc = FIO_Q_QUEUED; - } else { - PrintError(__func__); - io_u->error = GetLastError(); + else { + io_u->error = win_to_posix_error(GetLastError()); io_u->resid = io_u->xfer_buflen; - rc = FIO_Q_COMPLETED; } return rc; } -static void fio_windowsaio_cleanup(struct thread_data *td) -{ - int i; - struct windowsaio_data *wd; - - wd = td->io_ops->data; - - WaitForSingleObject(wd->iothread_stopped, INFINITE); - - if (wd != NULL) { - CloseHandle(wd->iothread); - CloseHandle(wd->iothread_stopped); - CloseHandle(wd->iocomplete_event); - - for (i = 0; i < 2 * td->o.iodepth; i++) { - CloseHandle(wd->io_handles[i]); - } - - free(wd->aio_events); - free(wd->io_handles); - free(wd->ovls); - free(wd); - - td->io_ops->data = NULL; - } -} - /* Runs as a thread and waits for queued IO to complete */ static DWORD WINAPI IoCompletionRoutine(LPVOID lpParameter) { OVERLAPPED *ovl; - FIO_OVERLAPPED *fov; + struct fio_overlapped *fov; struct io_u *io_u; struct windowsaio_data *wd; struct thread_ctx *ctx; @@ -268,221 +378,77 @@ static DWORD WINAPI IoCompletionRoutine(LPVOID lpParameter) ctx = (struct thread_ctx*)lpParameter; wd = ctx->wd; - while (ctx->wd->iothread_running) { - if (!GetQueuedCompletionStatus(ctx->iocp, &bytes, &ulKey, &ovl, 250)) + do { + if (!GetQueuedCompletionStatus(ctx->iocp, &bytes, &ulKey, &ovl, 250) && ovl == NULL) continue; - fov = CONTAINING_RECORD(ovl, FIO_OVERLAPPED, o); + fov = CONTAINING_RECORD(ovl, struct fio_overlapped, o); io_u = fov->io_u; - if (io_u->seen != 0) - continue; - 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 = ovl->Internal; + io_u->error = win_to_posix_error(GetLastError()); } - io_u->seen = 1; + fov->io_complete = TRUE; SetEvent(wd->iocomplete_event); - } + } while (ctx->wd->iothread_running); CloseHandle(ctx->iocp); - SetEvent(ctx->wd->iothread_stopped); free(ctx); - return 0; } -static int fio_windowsaio_init(struct thread_data *td) +static int fio_windowsaio_cancel(struct thread_data *td, + struct io_u *io_u) { - struct windowsaio_data *wd; - OSVERSIONINFO osInfo; 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; - } + struct windowsaio_data *wd = td->io_ops->data; - if (!rc) { - wd->io_handles = malloc(2 * td->o.iodepth * sizeof(HANDLE)); - if (wd->io_handles == NULL) - rc = 1; - } + /* 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 (!rc) { - wd->ovls = malloc(2 * td->o.iodepth * sizeof(FIO_OVERLAPPED)); - if (wd->ovls == NULL) + if (!wd->pCancelIoEx(io_u->file->hFile, &ovl->o)) { + log_err("windowsaio: failed to cancel io\n"); 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) { - osInfo.dwOSVersionInfoSize = sizeof(OSVERSIONINFO); - GetVersionEx(&osInfo); - - if (osInfo.dwMajorVersion >= 6) - wd->have_cancelioex = TRUE; - else - wd->have_cancelioex = FALSE; - } - - if (rc) { - PrintError(__func__); - if (wd != NULL) { - if (wd->ovls != NULL) - free(wd->ovls); - if (wd->io_handles != NULL) - free(wd->io_handles); - if (wd->aio_events != NULL) - free(wd->aio_events); - - free(wd); } - } - - td->io_ops->data = wd; - return 0; -} - -static int fio_windowsaio_open_file(struct thread_data *td, struct fio_file *f) -{ - int rc = 0; - HANDLE hFile; - DWORD flags = FILE_ATTRIBUTE_TEMPORARY | FILE_FLAG_POSIX_SEMANTICS | FILE_FLAG_OVERLAPPED; - DWORD sharemode = FILE_SHARE_READ | FILE_SHARE_WRITE; - DWORD openmode = OPEN_ALWAYS; - DWORD access; - int i; - - 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; - - - if (td->o.td_ddir == TD_DDIR_READ || - td->o.td_ddir == TD_DDIR_WRITE || - td->o.td_ddir == TD_DDIR_RANDRW) - { - flags |= FILE_FLAG_SEQUENTIAL_SCAN; - } - else - { - flags |= FILE_FLAG_RANDOM_ACCESS; - } - - if (td_read(td) || read_only) - access = GENERIC_READ; - else - access = (GENERIC_READ | GENERIC_WRITE); - - if (td->o.create_on_open > 0) - 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) { - PrintError(__func__); + } else rc = 1; - } - - /* Only set up the competion port and thread if we're not just - * querying the device size */ - if (!rc && td->io_ops->data != NULL) { - struct windowsaio_data *wd; - struct thread_ctx *ctx; - hFile = CreateIoCompletionPort(f->hFile, NULL, 0, 0); - - wd = td->io_ops->data; - - wd->io_index = 0; - wd->iothread_running = TRUE; - /* Create a manual-reset event */ - wd->iothread_stopped = CreateEvent(NULL, TRUE, FALSE, NULL); - - if (wd->iothread_stopped == NULL) - rc = 1; - - if (!rc) { - for (i = 0; i < 2 * td->o.iodepth; i++) { - /* Create a manual-reset event for putting in OVERLAPPED */ - wd->io_handles[i] = CreateEvent(NULL, TRUE, FALSE, NULL); - if (wd->io_handles[i] == NULL) { - PrintError(__func__); - rc = 1; - break; - } - } - } - - 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) { - PrintError(__func__); - rc = 1; - } - } return rc; } -static int fio_windowsaio_close_file(struct thread_data fio_unused *td, struct fio_file *f) +static void fio_windowsaio_io_u_free(struct thread_data *td, struct io_u *io_u) { - struct windowsaio_data *wd; + struct fio_overlapped *o = io_u->engine_data; - dprint(FD_FILE, "fd close %s\n", f->file_name); - - if (td->io_ops->data != NULL) { - wd = td->io_ops->data; - wd->iothread_running = FALSE; - WaitForSingleObject(wd->iothread_stopped, INFINITE); + if (o) { + CloseHandle(o->o.hEvent); + io_u->engine_data = NULL; + free(o); } +} - if (f->hFile != INVALID_HANDLE_VALUE) { - if (!CloseHandle(f->hFile)) - PrintError(__func__); +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 == NULL) { + log_err("windowsaio: failed to create event handle\n"); + free(o); + return 1; } - f->hFile = INVALID_HANDLE_VALUE; + io_u->engine_data = o; return 0; } @@ -497,15 +463,17 @@ static struct ioengine_ops ioengine = { .cleanup = fio_windowsaio_cleanup, .open_file = fio_windowsaio_open_file, .close_file = fio_windowsaio_close_file, - .get_file_size = generic_get_file_size + .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) +static void fio_init fio_windowsaio_register(void) { register_ioengine(&ioengine); } -static void fio_exit fio_posixaio_unregister(void) +static void fio_exit fio_windowsaio_unregister(void) { unregister_ioengine(&ioengine); }