| … | |
… | |
| 242 | { |
242 | { |
| 243 | linuxaio_parse_events (EV_A_ ring->io_events + head, ring->nr - head); |
243 | linuxaio_parse_events (EV_A_ ring->io_events + head, ring->nr - head); |
| 244 | linuxaio_parse_events (EV_A_ ring->io_events, tail); |
244 | linuxaio_parse_events (EV_A_ ring->io_events, tail); |
| 245 | } |
245 | } |
| 246 | |
246 | |
| 247 | ring->head = tail; |
247 | *(volatile unsigned *)&ring->head = tail; |
|
|
248 | |
|
|
249 | /* again, other implementations don't do this, but I think it's required for the kernel to see free slots */ |
|
|
250 | ECB_MEMORY_FENCE_RELEASE; |
| 248 | |
251 | |
| 249 | return 1; |
252 | return 1; |
| 250 | } |
253 | } |
| 251 | |
254 | |
| 252 | /* read at least one event from kernel, or timeout */ |
255 | /* read at least one event from kernel, or timeout */ |
