… | |
… | |
117 | # define EV_USE_EPOLL 0 |
117 | # define EV_USE_EPOLL 0 |
118 | # endif |
118 | # endif |
119 | |
119 | |
120 | # if HAVE_LINUX_AIO_ABI_H |
120 | # if HAVE_LINUX_AIO_ABI_H |
121 | # ifndef EV_USE_LINUXAIO |
121 | # ifndef EV_USE_LINUXAIO |
122 | # define EV_USE_LINUXAIO EV_FEATURE_BACKENDS |
122 | # define EV_USE_LINUXAIO 0 /* was: EV_FEATURE_BACKENDS, always off by default */ |
123 | # endif |
123 | # endif |
124 | # else |
124 | # else |
125 | # undef EV_USE_LINUXAIO |
125 | # undef EV_USE_LINUXAIO |
126 | # define EV_USE_LINUXAIO 0 |
126 | # define EV_USE_LINUXAIO 0 |
127 | # endif |
127 | # endif |
… | |
… | |
344 | # define EV_USE_PORT 0 |
344 | # define EV_USE_PORT 0 |
345 | #endif |
345 | #endif |
346 | |
346 | |
347 | #ifndef EV_USE_LINUXAIO |
347 | #ifndef EV_USE_LINUXAIO |
348 | # if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */ |
348 | # if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */ |
349 | # define EV_USE_LINUXAIO 1 |
349 | # define EV_USE_LINUXAIO 0 /* was: 1, always off by default */ |
350 | # else |
350 | # else |
351 | # define EV_USE_LINUXAIO 0 |
351 | # define EV_USE_LINUXAIO 0 |
352 | # endif |
352 | # endif |
353 | #endif |
353 | #endif |
354 | |
354 | |
… | |
… | |
1658 | * our syscalls return < 0, not == -1, on error. which is good |
1658 | * our syscalls return < 0, not == -1, on error. which is good |
1659 | * enough for linux aio. |
1659 | * enough for linux aio. |
1660 | * TODO: arm is also common nowadays, maybe even mips and x86 |
1660 | * TODO: arm is also common nowadays, maybe even mips and x86 |
1661 | * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove... |
1661 | * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove... |
1662 | */ |
1662 | */ |
1663 | #if __GNUC__ && __linux && ECB_AMD64 && !defined __OPTIMIZE_SIZE__ |
1663 | #if __GNUC__ && __linux && ECB_AMD64 && !EV_FEATURE_CODE |
1664 | /* the costly errno access probably kills this for size optimisation */ |
1664 | /* the costly errno access probably kills this for size optimisation */ |
1665 | |
1665 | |
1666 | #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \ |
1666 | #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \ |
1667 | ({ \ |
1667 | ({ \ |
1668 | long res; \ |
1668 | long res; \ |
… | |
… | |
2262 | inline_size void |
2262 | inline_size void |
2263 | fd_reify (EV_P) |
2263 | fd_reify (EV_P) |
2264 | { |
2264 | { |
2265 | int i; |
2265 | int i; |
2266 | |
2266 | |
|
|
2267 | /* most backends do not modify the fdchanges list in backend_modfiy. |
|
|
2268 | * except io_uring, which has fixed-size buffers which might force us |
|
|
2269 | * to handle events in backend_modify, causing fdchangesd to be amended, |
|
|
2270 | * which could result in an endless loop. |
|
|
2271 | * to avoid this, we do not dynamically handle fds that were added |
|
|
2272 | * during fd_reify. that menas thast for those backends, fdchangecnt |
|
|
2273 | * might be non-zero during poll, which must cause them to not block. |
|
|
2274 | * to not put too much of a burden on other backends, this detail |
|
|
2275 | * needs to be handled in the backend. |
|
|
2276 | */ |
|
|
2277 | int changecnt = fdchangecnt; |
|
|
2278 | |
2267 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
2279 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
2268 | for (i = 0; i < fdchangecnt; ++i) |
2280 | for (i = 0; i < changecnt; ++i) |
2269 | { |
2281 | { |
2270 | int fd = fdchanges [i]; |
2282 | int fd = fdchanges [i]; |
2271 | ANFD *anfd = anfds + fd; |
2283 | ANFD *anfd = anfds + fd; |
2272 | |
2284 | |
2273 | if (anfd->reify & EV__IOFDSET && anfd->head) |
2285 | if (anfd->reify & EV__IOFDSET && anfd->head) |
… | |
… | |
2287 | } |
2299 | } |
2288 | } |
2300 | } |
2289 | } |
2301 | } |
2290 | #endif |
2302 | #endif |
2291 | |
2303 | |
2292 | for (i = 0; i < fdchangecnt; ++i) |
2304 | for (i = 0; i < changecnt; ++i) |
2293 | { |
2305 | { |
2294 | int fd = fdchanges [i]; |
2306 | int fd = fdchanges [i]; |
2295 | ANFD *anfd = anfds + fd; |
2307 | ANFD *anfd = anfds + fd; |
2296 | ev_io *w; |
2308 | ev_io *w; |
2297 | |
2309 | |
… | |
… | |
2313 | |
2325 | |
2314 | if (o_reify & EV__IOFDSET) |
2326 | if (o_reify & EV__IOFDSET) |
2315 | backend_modify (EV_A_ fd, o_events, anfd->events); |
2327 | backend_modify (EV_A_ fd, o_events, anfd->events); |
2316 | } |
2328 | } |
2317 | |
2329 | |
|
|
2330 | /* normally, fdchangecnt hasn't changed. if it has, then new fds have been added. |
|
|
2331 | * this is a rare case (see beginning comment in this function), so we copy them to the |
|
|
2332 | * front and hope the backend handles this case. |
|
|
2333 | */ |
|
|
2334 | if (ecb_expect_false (fdchangecnt != changecnt)) |
|
|
2335 | memmove (fdchanges, fdchanges + changecnt, (fdchangecnt - changecnt) * sizeof (*fdchanges)); |
|
|
2336 | |
2318 | fdchangecnt = 0; |
2337 | fdchangecnt -= changecnt; |
2319 | } |
2338 | } |
2320 | |
2339 | |
2321 | /* something about the given fd changed */ |
2340 | /* something about the given fd changed */ |
2322 | inline_size |
2341 | inline_size |
2323 | void |
2342 | void |
… | |
… | |
5076 | ev_run (EV_A_ EVRUN_NOWAIT); |
5095 | ev_run (EV_A_ EVRUN_NOWAIT); |
5077 | } |
5096 | } |
5078 | } |
5097 | } |
5079 | } |
5098 | } |
5080 | |
5099 | |
|
|
5100 | #if EV_FORK_ENABLE |
5081 | static void |
5101 | static void |
5082 | embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) |
5102 | embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) |
5083 | { |
5103 | { |
5084 | ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); |
5104 | ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); |
5085 | |
5105 | |
… | |
… | |
5092 | ev_run (EV_A_ EVRUN_NOWAIT); |
5112 | ev_run (EV_A_ EVRUN_NOWAIT); |
5093 | } |
5113 | } |
5094 | |
5114 | |
5095 | ev_embed_start (EV_A_ w); |
5115 | ev_embed_start (EV_A_ w); |
5096 | } |
5116 | } |
|
|
5117 | #endif |
5097 | |
5118 | |
5098 | #if 0 |
5119 | #if 0 |
5099 | static void |
5120 | static void |
5100 | embed_idle_cb (EV_P_ ev_idle *idle, int revents) |
5121 | embed_idle_cb (EV_P_ ev_idle *idle, int revents) |
5101 | { |
5122 | { |
… | |
… | |
5122 | |
5143 | |
5123 | ev_prepare_init (&w->prepare, embed_prepare_cb); |
5144 | ev_prepare_init (&w->prepare, embed_prepare_cb); |
5124 | ev_set_priority (&w->prepare, EV_MINPRI); |
5145 | ev_set_priority (&w->prepare, EV_MINPRI); |
5125 | ev_prepare_start (EV_A_ &w->prepare); |
5146 | ev_prepare_start (EV_A_ &w->prepare); |
5126 | |
5147 | |
|
|
5148 | #if EV_FORK_ENABLE |
5127 | ev_fork_init (&w->fork, embed_fork_cb); |
5149 | ev_fork_init (&w->fork, embed_fork_cb); |
5128 | ev_fork_start (EV_A_ &w->fork); |
5150 | ev_fork_start (EV_A_ &w->fork); |
|
|
5151 | #endif |
5129 | |
5152 | |
5130 | /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ |
5153 | /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ |
5131 | |
5154 | |
5132 | ev_start (EV_A_ (W)w, 1); |
5155 | ev_start (EV_A_ (W)w, 1); |
5133 | |
5156 | |
… | |
… | |
5143 | |
5166 | |
5144 | EV_FREQUENT_CHECK; |
5167 | EV_FREQUENT_CHECK; |
5145 | |
5168 | |
5146 | ev_io_stop (EV_A_ &w->io); |
5169 | ev_io_stop (EV_A_ &w->io); |
5147 | ev_prepare_stop (EV_A_ &w->prepare); |
5170 | ev_prepare_stop (EV_A_ &w->prepare); |
|
|
5171 | #if EV_FORK_ENABLE |
5148 | ev_fork_stop (EV_A_ &w->fork); |
5172 | ev_fork_stop (EV_A_ &w->fork); |
|
|
5173 | #endif |
5149 | |
5174 | |
5150 | ev_stop (EV_A_ (W)w); |
5175 | ev_stop (EV_A_ (W)w); |
5151 | |
5176 | |
5152 | EV_FREQUENT_CHECK; |
5177 | EV_FREQUENT_CHECK; |
5153 | } |
5178 | } |