| … | |
… | |
| 198 | linuxaio_iocbps [fd]->io.aio_buf = 0; |
198 | linuxaio_iocbps [fd]->io.aio_buf = 0; |
| 199 | anfds [fd].events = 0; |
199 | anfds [fd].events = 0; |
| 200 | fd_change (EV_A_ fd, 0); |
200 | fd_change (EV_A_ fd, 0); |
| 201 | |
201 | |
| 202 | /* feed events, we do not expect or handle POLLNVAL */ |
202 | /* feed events, we do not expect or handle POLLNVAL */ |
| 203 | if (ecb_expect_false (res & POLLNVAL)) |
203 | if (expect_false (res & POLLNVAL)) |
| 204 | fd_kill (EV_A_ fd); |
204 | fd_kill (EV_A_ fd); |
| 205 | else |
205 | else |
| 206 | fd_event ( |
206 | fd_event ( |
| 207 | EV_A_ |
207 | EV_A_ |
| 208 | fd, |
208 | fd, |
| … | |
… | |
| 229 | |
229 | |
| 230 | if (head == tail) |
230 | if (head == tail) |
| 231 | return 0; |
231 | return 0; |
| 232 | |
232 | |
| 233 | /* bail out if the ring buffer doesn't match the expected layout */ |
233 | /* bail out if the ring buffer doesn't match the expected layout */ |
| 234 | if (ecb_expect_false (ring->magic != AIO_RING_MAGIC) |
234 | if (expect_false (ring->magic != AIO_RING_MAGIC) |
| 235 | || ring->incompat_features != AIO_RING_INCOMPAT_FEATURES |
235 | || ring->incompat_features != AIO_RING_INCOMPAT_FEATURES |
| 236 | || ring->header_length != sizeof (struct aio_ring)) /* TODO: or use it to find io_event[0]? */ |
236 | || ring->header_length != sizeof (struct aio_ring)) /* TODO: or use it to find io_event[0]? */ |
| 237 | return 0; |
237 | return 0; |
| 238 | |
238 | |
| 239 | /* make sure the events up to tail are visible */ |
239 | /* make sure the events up to tail are visible */ |
| 240 | ECB_MEMORY_FENCE_ACQUIRE; |
240 | ECB_MEMORY_FENCE_ACQUIRE; |
| 241 | |
241 | |
| … | |
… | |
| 262 | inline_size |
262 | inline_size |
| 263 | void |
263 | void |
| 264 | linuxaio_get_events (EV_P_ ev_tstamp timeout) |
264 | linuxaio_get_events (EV_P_ ev_tstamp timeout) |
| 265 | { |
265 | { |
| 266 | struct timespec ts; |
266 | struct timespec ts; |
| 267 | struct io_event ioev; |
267 | struct io_event ioev[1]; |
| 268 | int res; |
268 | int res; |
| 269 | |
269 | |
| 270 | if (linuxaio_get_events_from_ring (EV_A)) |
270 | if (linuxaio_get_events_from_ring (EV_A)) |
| 271 | return; |
271 | return; |
| 272 | |
272 | |
| … | |
… | |
| 275 | /* if the ring buffer changes layout, but so be it */ |
275 | /* if the ring buffer changes layout, but so be it */ |
| 276 | |
276 | |
| 277 | ts.tv_sec = (long)timeout; |
277 | ts.tv_sec = (long)timeout; |
| 278 | ts.tv_nsec = (long)((timeout - ts.tv_sec) * 1e9); |
278 | ts.tv_nsec = (long)((timeout - ts.tv_sec) * 1e9); |
| 279 | |
279 | |
| 280 | res = ev_io_getevents (linuxaio_ctx, 1, 1, &ioev, &ts); |
280 | res = ev_io_getevents (linuxaio_ctx, 1, sizeof (ioev) / sizeof (ioev [0]), ioev, &ts); |
| 281 | |
281 | |
| 282 | if (res < 0) |
282 | if (res < 0) |
| 283 | if (errno == EINTR) |
283 | if (errno == EINTR) |
| 284 | /* ignored */; |
284 | /* ignored */; |
| 285 | else |
285 | else |
| 286 | ev_syserr ("(libev) linuxaio io_getevents"); |
286 | ev_syserr ("(libev) linuxaio io_getevents"); |
| 287 | else if (res) |
287 | else if (res) |
| 288 | { |
288 | { |
| 289 | /* at least one event received, handle it and any remaining ones in the ring buffer */ |
289 | /* at least one event received, handle it and any remaining ones in the ring buffer */ |
| 290 | linuxaio_parse_events (EV_A_ &ioev, 1); |
290 | linuxaio_parse_events (EV_A_ ioev, res); |
| 291 | linuxaio_get_events_from_ring (EV_A); |
291 | linuxaio_get_events_from_ring (EV_A); |
| 292 | } |
292 | } |
| 293 | } |
293 | } |
| 294 | |
294 | |
| 295 | #if EPOLL_FALLBACK |
295 | #if EPOLL_FALLBACK |
| … | |
… | |
| 320 | /* which allows us to pinpoint the errornous iocb */ |
320 | /* which allows us to pinpoint the errornous iocb */ |
| 321 | for (submitted = 0; submitted < linuxaio_submitcnt; ) |
321 | for (submitted = 0; submitted < linuxaio_submitcnt; ) |
| 322 | { |
322 | { |
| 323 | int res = ev_io_submit (linuxaio_ctx, linuxaio_submitcnt - submitted, linuxaio_submits + submitted); |
323 | int res = ev_io_submit (linuxaio_ctx, linuxaio_submitcnt - submitted, linuxaio_submits + submitted); |
| 324 | |
324 | |
| 325 | if (ecb_expect_false (res < 0)) |
325 | if (expect_false (res < 0)) |
| 326 | if (errno == EAGAIN) |
326 | if (errno == EAGAIN) |
| 327 | { |
327 | { |
| 328 | /* This happens when the ring buffer is full, at least. I assume this means |
328 | /* This happens when the ring buffer is full, at least. I assume this means |
| 329 | * that the event was queued synchronously during io_submit, and thus |
329 | * that the event was queued synchronously during io_submit, and thus |
| 330 | * the buffer overflowed. |
330 | * the buffer overflowed. |
| … | |
… | |
| 376 | for (;;) |
376 | for (;;) |
| 377 | { |
377 | { |
| 378 | int idx; |
378 | int idx; |
| 379 | int res = epoll_wait (backend_fd, events, sizeof (events) / sizeof (events [0]), 0); |
379 | int res = epoll_wait (backend_fd, events, sizeof (events) / sizeof (events [0]), 0); |
| 380 | |
380 | |
| 381 | if (ecb_expect_false (res < 0)) |
381 | if (expect_false (res < 0)) |
| 382 | ev_syserr ("(libev) linuxaio epoll_wait"); |
382 | ev_syserr ("(libev) linuxaio epoll_wait"); |
| 383 | else if (!res) |
383 | else if (!res) |
| 384 | break; |
384 | break; |
| 385 | |
385 | |
| 386 | for (idx = res; idx--; ) |
386 | for (idx = res; idx--; ) |
