Commit | Line | Data |
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ecc314ba BC |
1 | /* |
2 | * Native Windows async IO engine | |
ea4500d8 | 3 | * Copyright (C) 2011 Bruce Cran <bruce@cran.org.uk> |
ecc314ba BC |
4 | */ |
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); |
16 | ||
67897036 BC |
17 | struct fio_overlapped { |
18 | OVERLAPPED o; | |
19 | struct io_u *io_u; | |
20 | BOOL io_complete; | |
40c5db35 | 21 | BOOL io_free; |
67897036 | 22 | }; |
ecc314ba | 23 | |
9b836561 | 24 | struct windowsaio_data { |
67897036 | 25 | struct fio_overlapped *ovls; |
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 | }; |
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, |
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); | |
51 | ||
9b836561 BC |
52 | int sync_file_range(int fd, off64_t offset, off64_t nbytes, |
53 | unsigned int flags) | |
54 | { | |
55 | errno = ENOSYS; | |
56 | return -1; | |
57 | } | |
58 | ||
ecc314ba BC |
59 | static int fio_windowsaio_init(struct thread_data *td) |
60 | { | |
ecc314ba | 61 | struct windowsaio_data *wd; |
ea4500d8 | 62 | HANDLE hKernel32Dll; |
9b836561 | 63 | int rc = 0; |
67897036 | 64 | int i; |
ecc314ba | 65 | |
ecc314ba | 66 | wd = malloc(sizeof(struct windowsaio_data)); |
9b836561 BC |
67 | if (wd != NULL) |
68 | ZeroMemory(wd, sizeof(struct windowsaio_data)); | |
69 | else | |
70 | rc = 1; | |
ecc314ba | 71 | |
9b836561 BC |
72 | if (!rc) { |
73 | wd->aio_events = malloc(td->o.iodepth * sizeof(struct io_u*)); | |
74 | if (wd->aio_events == NULL) | |
75 | rc = 1; | |
e4db9fec BC |
76 | } |
77 | ||
9b836561 | 78 | if (!rc) { |
67897036 BC |
79 | wd->ovls = malloc(td->o.iodepth * sizeof(struct fio_overlapped)); |
80 | if (wd->ovls == NULL) | |
9b836561 | 81 | rc = 1; |
e4db9fec BC |
82 | } |
83 | ||
9b836561 | 84 | if (!rc) { |
67897036 BC |
85 | for (i = 0; i < td->o.iodepth; i++) { |
86 | wd->ovls[i].io_free = TRUE; | |
87 | wd->ovls[i].io_complete = FALSE; | |
88 | ||
89 | wd->ovls[i].o.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL); | |
90 | if (wd->ovls[i].o.hEvent == NULL) { | |
91 | rc = 1; | |
92 | break; | |
93 | } | |
94 | } | |
9b836561 | 95 | } |
e4db9fec | 96 | |
9b836561 BC |
97 | if (!rc) { |
98 | /* Create an auto-reset event */ | |
99 | wd->iocomplete_event = CreateEvent(NULL, FALSE, FALSE, NULL); | |
100 | if (wd->iocomplete_event == NULL) | |
101 | rc = 1; | |
102 | } | |
103 | ||
9b836561 | 104 | if (rc) { |
9b836561 BC |
105 | if (wd != NULL) { |
106 | if (wd->ovls != NULL) | |
107 | free(wd->ovls); | |
9b836561 BC |
108 | if (wd->aio_events != NULL) |
109 | free(wd->aio_events); | |
110 | ||
111 | free(wd); | |
112 | } | |
113 | } | |
ecc314ba | 114 | |
ea4500d8 BC |
115 | hKernel32Dll = GetModuleHandle("kernel32.dll"); |
116 | wd->pCancelIoEx = GetProcAddress(hKernel32Dll, "CancelIoEx"); | |
117 | ||
ecc314ba | 118 | td->io_ops->data = wd; |
4e79098f | 119 | return rc; |
ecc314ba BC |
120 | } |
121 | ||
67897036 BC |
122 | static void fio_windowsaio_cleanup(struct thread_data *td) |
123 | { | |
124 | int i; | |
125 | struct windowsaio_data *wd; | |
126 | ||
127 | wd = td->io_ops->data; | |
128 | ||
129 | if (wd != NULL) { | |
40c5db35 JA |
130 | wd->iothread_running = FALSE; |
131 | WaitForSingleObject(wd->iothread, INFINITE); | |
67897036 BC |
132 | |
133 | CloseHandle(wd->iothread); | |
134 | CloseHandle(wd->iocomplete_event); | |
135 | ||
40c5db35 | 136 | for (i = 0; i < td->o.iodepth; i++) |
67897036 | 137 | CloseHandle(wd->ovls[i].o.hEvent); |
67897036 BC |
138 | |
139 | free(wd->aio_events); | |
140 | free(wd->ovls); | |
141 | free(wd); | |
142 | ||
143 | td->io_ops->data = NULL; | |
144 | } | |
145 | } | |
146 | ||
147 | ||
ecc314ba BC |
148 | static int fio_windowsaio_open_file(struct thread_data *td, struct fio_file *f) |
149 | { | |
150 | int rc = 0; | |
151 | HANDLE hFile; | |
4e79098f | 152 | DWORD flags = FILE_FLAG_POSIX_SEMANTICS | FILE_FLAG_OVERLAPPED; |
ecc314ba BC |
153 | DWORD sharemode = FILE_SHARE_READ | FILE_SHARE_WRITE; |
154 | DWORD openmode = OPEN_ALWAYS; | |
155 | DWORD access; | |
156 | ||
157 | dprint(FD_FILE, "fd open %s\n", f->file_name); | |
158 | ||
ecc314ba BC |
159 | if (f->filetype == FIO_TYPE_PIPE) { |
160 | log_err("fio: windowsaio doesn't support pipes\n"); | |
161 | return 1; | |
162 | } | |
163 | ||
164 | if (!strcmp(f->file_name, "-")) { | |
165 | log_err("fio: can't read/write to stdin/out\n"); | |
166 | return 1; | |
167 | } | |
168 | ||
169 | if (td->o.odirect) | |
170 | flags |= FILE_FLAG_NO_BUFFERING; | |
171 | if (td->o.sync_io) | |
172 | flags |= FILE_FLAG_WRITE_THROUGH; | |
173 | ||
ecc314ba | 174 | if (td->o.td_ddir == TD_DDIR_READ || |
ea4500d8 | 175 | td->o.td_ddir == TD_DDIR_WRITE) |
ecc314ba | 176 | flags |= FILE_FLAG_SEQUENTIAL_SCAN; |
ecc314ba | 177 | else |
ecc314ba | 178 | flags |= FILE_FLAG_RANDOM_ACCESS; |
ecc314ba | 179 | |
ea4500d8 | 180 | if (!td_write(td) || read_only) |
ecc314ba BC |
181 | access = GENERIC_READ; |
182 | else | |
183 | access = (GENERIC_READ | GENERIC_WRITE); | |
184 | ||
185 | if (td->o.create_on_open > 0) | |
186 | openmode = OPEN_ALWAYS; | |
187 | else | |
188 | openmode = OPEN_EXISTING; | |
189 | ||
190 | f->hFile = CreateFile(f->file_name, access, sharemode, | |
191 | NULL, openmode, flags, NULL); | |
192 | ||
4e79098f | 193 | if (f->hFile == INVALID_HANDLE_VALUE) |
ecc314ba | 194 | rc = 1; |
ecc314ba BC |
195 | |
196 | /* Only set up the competion port and thread if we're not just | |
197 | * querying the device size */ | |
40c5db35 | 198 | if (!rc && td->io_ops->data != NULL) { |
ecc314ba | 199 | struct thread_ctx *ctx; |
40c5db35 | 200 | struct windowsaio_data *wd; |
ecc314ba | 201 | |
40c5db35 | 202 | hFile = CreateIoCompletionPort(f->hFile, NULL, 0, 0); |
ea4500d8 | 203 | |
40c5db35 | 204 | wd = td->io_ops->data; |
9b836561 | 205 | wd->iothread_running = TRUE; |
ecc314ba | 206 | |
9b836561 BC |
207 | if (!rc) { |
208 | ctx = malloc(sizeof(struct thread_ctx)); | |
209 | ctx->iocp = hFile; | |
210 | ctx->wd = wd; | |
211 | ||
212 | wd->iothread = CreateThread(NULL, 0, IoCompletionRoutine, ctx, 0, NULL); | |
213 | } | |
ecc314ba | 214 | |
4e79098f | 215 | if (rc || wd->iothread == NULL) |
ecc314ba | 216 | rc = 1; |
ecc314ba BC |
217 | } |
218 | ||
ecc314ba BC |
219 | return rc; |
220 | } | |
221 | ||
222 | static int fio_windowsaio_close_file(struct thread_data fio_unused *td, struct fio_file *f) | |
223 | { | |
4e79098f | 224 | int rc = 0; |
1e42cc3d | 225 | |
9b836561 BC |
226 | dprint(FD_FILE, "fd close %s\n", f->file_name); |
227 | ||
ecc314ba | 228 | if (f->hFile != INVALID_HANDLE_VALUE) { |
9b836561 | 229 | if (!CloseHandle(f->hFile)) |
4e79098f | 230 | rc = 1; |
ecc314ba BC |
231 | } |
232 | ||
233 | f->hFile = INVALID_HANDLE_VALUE; | |
4e79098f | 234 | return rc; |
ecc314ba BC |
235 | } |
236 | ||
67897036 BC |
237 | static BOOL timeout_expired(DWORD start_count, DWORD end_count) |
238 | { | |
239 | BOOL expired = FALSE; | |
240 | DWORD current_time; | |
241 | ||
242 | current_time = GetTickCount(); | |
243 | ||
244 | if ((end_count > start_count) && current_time >= end_count) | |
245 | expired = TRUE; | |
246 | else if (current_time < start_count && current_time > end_count) | |
247 | expired = TRUE; | |
248 | ||
249 | return expired; | |
250 | } | |
251 | ||
252 | static struct io_u* fio_windowsaio_event(struct thread_data *td, int event) | |
253 | { | |
254 | struct windowsaio_data *wd = td->io_ops->data; | |
255 | return wd->aio_events[event]; | |
256 | } | |
257 | ||
258 | static int fio_windowsaio_getevents(struct thread_data *td, unsigned int min, | |
259 | unsigned int max, struct timespec *t) | |
260 | { | |
261 | struct windowsaio_data *wd = td->io_ops->data; | |
262 | struct flist_head *entry; | |
263 | unsigned int dequeued = 0; | |
264 | struct io_u *io_u; | |
265 | struct fio_overlapped *fov; | |
266 | DWORD start_count = 0; | |
267 | DWORD end_count = 0; | |
268 | DWORD status; | |
269 | DWORD mswait = 250; | |
270 | ||
271 | if (t != NULL) { | |
272 | mswait = (t->tv_sec * 1000) + (t->tv_nsec / 1000000); | |
273 | start_count = GetTickCount(); | |
274 | end_count = start_count + (t->tv_sec * 1000) + (t->tv_nsec / 1000000); | |
275 | } | |
276 | ||
277 | do { | |
278 | flist_for_each(entry, &td->io_u_busylist) { | |
279 | io_u = flist_entry(entry, struct io_u, list); | |
280 | fov = (struct fio_overlapped*)io_u->engine_data; | |
281 | ||
282 | if (fov->io_complete) { | |
40c5db35 | 283 | fov->io_complete = FALSE; |
67897036 BC |
284 | fov->io_free = TRUE; |
285 | wd->aio_events[dequeued] = io_u; | |
286 | dequeued++; | |
287 | } | |
288 | ||
289 | if (dequeued >= min) | |
290 | break; | |
291 | } | |
292 | ||
40c5db35 | 293 | if (dequeued < min) { |
67897036 BC |
294 | status = WaitForSingleObject(wd->iocomplete_event, mswait); |
295 | if (status != WAIT_OBJECT_0 && dequeued > 0) | |
296 | break; | |
297 | } | |
298 | ||
299 | if (dequeued >= min || (t != NULL && timeout_expired(start_count, end_count))) | |
300 | break; | |
301 | } while (1); | |
302 | ||
303 | return dequeued; | |
304 | } | |
305 | ||
40c5db35 | 306 | static int fio_windowsaio_queue(struct thread_data *td, struct io_u *io_u) |
67897036 | 307 | { |
1e42cc3d | 308 | LPOVERLAPPED lpOvl = NULL; |
67897036 BC |
309 | struct windowsaio_data *wd; |
310 | DWORD iobytes; | |
311 | BOOL success; | |
312 | int index; | |
313 | int rc = FIO_Q_COMPLETED; | |
314 | ||
315 | fio_ro_check(td, io_u); | |
316 | ||
317 | wd = td->io_ops->data; | |
318 | ||
1e42cc3d BC |
319 | for (index = 0; index < td->o.iodepth; index++) { |
320 | if (wd->ovls[index].io_free) { | |
321 | wd->ovls[index].io_free = FALSE; | |
322 | ResetEvent(wd->ovls[index].o.hEvent); | |
323 | break; | |
324 | } | |
325 | } | |
67897036 | 326 | |
1e42cc3d | 327 | assert(index < td->o.iodepth); |
67897036 | 328 | |
1e42cc3d BC |
329 | lpOvl = &wd->ovls[index].o; |
330 | wd->ovls[index].io_u = io_u; | |
4e79098f BC |
331 | lpOvl->Internal = STATUS_PENDING; |
332 | lpOvl->InternalHigh = 0; | |
333 | lpOvl->Offset = io_u->offset & 0xFFFFFFFF; | |
334 | lpOvl->OffsetHigh = io_u->offset >> 32; | |
1e42cc3d | 335 | io_u->engine_data = &wd->ovls[index]; |
67897036 BC |
336 | |
337 | switch (io_u->ddir) { | |
40c5db35 | 338 | case DDIR_WRITE: |
67897036 BC |
339 | success = WriteFile(io_u->file->hFile, io_u->xfer_buf, io_u->xfer_buflen, &iobytes, lpOvl); |
340 | break; | |
341 | case DDIR_READ: | |
342 | success = ReadFile(io_u->file->hFile, io_u->xfer_buf, io_u->xfer_buflen, &iobytes, lpOvl); | |
343 | break; | |
344 | case DDIR_SYNC: | |
345 | case DDIR_DATASYNC: | |
346 | case DDIR_SYNC_FILE_RANGE: | |
347 | success = FlushFileBuffers(io_u->file->hFile); | |
348 | if (!success) | |
349 | io_u->error = GetLastError(); | |
350 | ||
351 | return FIO_Q_COMPLETED; | |
352 | break; | |
353 | case DDIR_TRIM: | |
354 | log_err("manual TRIM isn't supported on Windows"); | |
355 | io_u->error = 1; | |
356 | io_u->resid = io_u->xfer_buflen; | |
357 | return FIO_Q_COMPLETED; | |
358 | break; | |
359 | default: | |
360 | assert(0); | |
361 | } | |
362 | ||
40c5db35 | 363 | if (success || GetLastError() == ERROR_IO_PENDING) |
67897036 | 364 | rc = FIO_Q_QUEUED; |
40c5db35 | 365 | else { |
67897036 BC |
366 | io_u->error = GetLastError(); |
367 | io_u->resid = io_u->xfer_buflen; | |
368 | } | |
369 | ||
370 | return rc; | |
371 | } | |
372 | ||
373 | /* Runs as a thread and waits for queued IO to complete */ | |
374 | static DWORD WINAPI IoCompletionRoutine(LPVOID lpParameter) | |
375 | { | |
376 | OVERLAPPED *ovl; | |
377 | struct fio_overlapped *fov; | |
378 | struct io_u *io_u; | |
379 | struct windowsaio_data *wd; | |
380 | struct thread_ctx *ctx; | |
381 | ULONG_PTR ulKey = 0; | |
382 | DWORD bytes; | |
383 | ||
384 | ctx = (struct thread_ctx*)lpParameter; | |
385 | wd = ctx->wd; | |
386 | ||
387 | do { | |
388 | if (!GetQueuedCompletionStatus(ctx->iocp, &bytes, &ulKey, &ovl, 250)) | |
389 | continue; | |
390 | ||
391 | fov = CONTAINING_RECORD(ovl, struct fio_overlapped, o); | |
392 | io_u = fov->io_u; | |
393 | ||
394 | if (ovl->Internal == ERROR_SUCCESS) { | |
395 | io_u->resid = io_u->xfer_buflen - ovl->InternalHigh; | |
396 | io_u->error = 0; | |
397 | } else { | |
398 | io_u->resid = io_u->xfer_buflen; | |
399 | io_u->error = ovl->Internal; | |
400 | } | |
401 | ||
40c5db35 | 402 | fov->io_complete = TRUE; |
67897036 BC |
403 | SetEvent(wd->iocomplete_event); |
404 | } while (ctx->wd->iothread_running); | |
405 | ||
406 | CloseHandle(ctx->iocp); | |
407 | free(ctx); | |
408 | return 0; | |
409 | } | |
410 | ||
411 | static int fio_windowsaio_cancel(struct thread_data *td, | |
412 | struct io_u *io_u) | |
413 | { | |
414 | int rc = 0; | |
415 | ||
416 | struct windowsaio_data *wd = td->io_ops->data; | |
417 | ||
418 | /* If we're running on Vista or newer, we can cancel individual IO requests */ | |
419 | if (wd->pCancelIoEx != NULL) { | |
420 | struct fio_overlapped *ovl = io_u->engine_data; | |
40c5db35 | 421 | |
67897036 BC |
422 | if (!wd->pCancelIoEx(io_u->file->hFile, &ovl->o)) |
423 | rc = 1; | |
424 | } else | |
425 | rc = 1; | |
426 | ||
427 | return rc; | |
428 | } | |
429 | ||
ecc314ba BC |
430 | static struct ioengine_ops ioengine = { |
431 | .name = "windowsaio", | |
432 | .version = FIO_IOOPS_VERSION, | |
433 | .init = fio_windowsaio_init, | |
434 | .queue = fio_windowsaio_queue, | |
435 | .cancel = fio_windowsaio_cancel, | |
436 | .getevents = fio_windowsaio_getevents, | |
437 | .event = fio_windowsaio_event, | |
438 | .cleanup = fio_windowsaio_cleanup, | |
439 | .open_file = fio_windowsaio_open_file, | |
440 | .close_file = fio_windowsaio_close_file, | |
441 | .get_file_size = generic_get_file_size | |
442 | }; | |
443 | ||
444 | static void fio_init fio_posixaio_register(void) | |
445 | { | |
446 | register_ioengine(&ioengine); | |
447 | } | |
448 | ||
449 | static void fio_exit fio_posixaio_unregister(void) | |
450 | { | |
451 | unregister_ioengine(&ioengine); | |
452 | } |