Line data Source code
1 : /* select - Module containing unix select(2) call.
2 : Under Unix, the file descriptors are small integers.
3 : Under Win32, select only exists for sockets, and sockets may
4 : have any value except INVALID_SOCKET.
5 : */
6 :
7 : #ifndef Py_BUILD_CORE_BUILTIN
8 : # define Py_BUILD_CORE_MODULE 1
9 : #endif
10 :
11 : #if defined(HAVE_POLL_H) && !defined(_GNU_SOURCE)
12 : # define _GNU_SOURCE
13 : #endif
14 :
15 : #include "Python.h"
16 : #include "pycore_fileutils.h" // _Py_set_inheritable()
17 : #include "structmember.h" // PyMemberDef
18 :
19 : #ifdef HAVE_SYS_DEVPOLL_H
20 : #include <sys/resource.h>
21 : #include <sys/devpoll.h>
22 : #include <sys/types.h>
23 : #include <sys/stat.h>
24 : #include <fcntl.h>
25 : #endif
26 :
27 : #ifdef __APPLE__
28 : /* Perform runtime testing for a broken poll on OSX to make it easier
29 : * to use the same binary on multiple releases of the OS.
30 : */
31 : #undef HAVE_BROKEN_POLL
32 : #endif
33 :
34 : /* Windows #defines FD_SETSIZE to 64 if FD_SETSIZE isn't already defined.
35 : 64 is too small (too many people have bumped into that limit).
36 : Here we boost it.
37 : Users who want even more than the boosted limit should #define
38 : FD_SETSIZE higher before this; e.g., via compiler /D switch.
39 : */
40 : #if defined(MS_WINDOWS) && !defined(FD_SETSIZE)
41 : #define FD_SETSIZE 512
42 : #endif
43 :
44 : #if defined(HAVE_POLL_H)
45 : #include <poll.h>
46 : #elif defined(HAVE_SYS_POLL_H)
47 : #include <sys/poll.h>
48 : #endif
49 :
50 : #ifdef __sgi
51 : /* This is missing from unistd.h */
52 : extern void bzero(void *, int);
53 : #endif
54 :
55 : #ifdef HAVE_SYS_TYPES_H
56 : #include <sys/types.h>
57 : #endif
58 :
59 : #ifdef MS_WINDOWS
60 : # define WIN32_LEAN_AND_MEAN
61 : # include <winsock.h>
62 : #else
63 : # define SOCKET int
64 : #endif
65 :
66 : typedef struct {
67 : PyObject *close;
68 : PyTypeObject *poll_Type;
69 : PyTypeObject *devpoll_Type;
70 : PyTypeObject *pyEpoll_Type;
71 : PyTypeObject *kqueue_event_Type;
72 : PyTypeObject *kqueue_queue_Type;
73 : } _selectstate;
74 :
75 : static struct PyModuleDef selectmodule;
76 :
77 : static inline _selectstate*
78 94153 : get_select_state(PyObject *module)
79 : {
80 94153 : void *state = PyModule_GetState(module);
81 94153 : assert(state != NULL);
82 94153 : return (_selectstate *)state;
83 : }
84 :
85 : #define _selectstate_by_type(type) get_select_state(PyType_GetModule(type))
86 :
87 : /*[clinic input]
88 : module select
89 : class select.poll "pollObject *" "_selectstate_by_type(type)->poll_Type"
90 : class select.devpoll "devpollObject *" "_selectstate_by_type(type)->devpoll_Type"
91 : class select.epoll "pyEpoll_Object *" "_selectstate_by_type(type)->pyEpoll_Type"
92 : class select.kqueue "kqueue_queue_Object *" "_selectstate_by_type(type)->kqueue_queue_Type"
93 : [clinic start generated code]*/
94 : /*[clinic end generated code: output=da39a3ee5e6b4b0d input=8072de35824aa327]*/
95 :
96 : /* list of Python objects and their file descriptor */
97 : typedef struct {
98 : PyObject *obj; /* owned reference */
99 : SOCKET fd;
100 : int sentinel; /* -1 == sentinel */
101 : } pylist;
102 :
103 : static void
104 74835 : reap_obj(pylist fd2obj[FD_SETSIZE + 1])
105 : {
106 : unsigned int i;
107 125752 : for (i = 0; i < (unsigned int)FD_SETSIZE + 1 && fd2obj[i].sentinel >= 0; i++) {
108 50917 : Py_CLEAR(fd2obj[i].obj);
109 : }
110 74835 : fd2obj[0].sentinel = -1;
111 74835 : }
112 :
113 :
114 : /* returns -1 and sets the Python exception if an error occurred, otherwise
115 : returns a number >= 0
116 : */
117 : static int
118 74829 : seq2set(PyObject *seq, fd_set *set, pylist fd2obj[FD_SETSIZE + 1])
119 : {
120 74829 : int max = -1;
121 74829 : unsigned int index = 0;
122 : Py_ssize_t i;
123 74829 : PyObject* fast_seq = NULL;
124 74829 : PyObject* o = NULL;
125 :
126 74829 : fd2obj[0].obj = (PyObject*)0; /* set list to zero size */
127 74829 : FD_ZERO(set);
128 :
129 74829 : fast_seq = PySequence_Fast(seq, "arguments 1-3 must be sequences");
130 74829 : if (!fast_seq)
131 1 : return -1;
132 :
133 125745 : for (i = 0; i < PySequence_Fast_GET_SIZE(fast_seq); i++) {
134 : SOCKET v;
135 :
136 : /* any intervening fileno() calls could decr this refcnt */
137 50919 : if (!(o = PySequence_Fast_GET_ITEM(fast_seq, i)))
138 0 : goto finally;
139 :
140 50919 : Py_INCREF(o);
141 50919 : v = PyObject_AsFileDescriptor( o );
142 50919 : if (v == -1) goto finally;
143 :
144 : #if defined(_MSC_VER)
145 : max = 0; /* not used for Win32 */
146 : #else /* !_MSC_VER */
147 50917 : if (!_PyIsSelectable_fd(v)) {
148 0 : PyErr_SetString(PyExc_ValueError,
149 : "filedescriptor out of range in select()");
150 0 : goto finally;
151 : }
152 50917 : if (v > max)
153 47939 : max = v;
154 : #endif /* _MSC_VER */
155 50917 : FD_SET(v, set);
156 :
157 : /* add object and its file descriptor to the list */
158 50917 : if (index >= (unsigned int)FD_SETSIZE) {
159 0 : PyErr_SetString(PyExc_ValueError,
160 : "too many file descriptors in select()");
161 0 : goto finally;
162 : }
163 50917 : fd2obj[index].obj = o;
164 50917 : fd2obj[index].fd = v;
165 50917 : fd2obj[index].sentinel = 0;
166 50917 : fd2obj[++index].sentinel = -1;
167 : }
168 74826 : Py_DECREF(fast_seq);
169 74826 : return max+1;
170 :
171 2 : finally:
172 2 : Py_XDECREF(o);
173 2 : Py_DECREF(fast_seq);
174 2 : return -1;
175 : }
176 :
177 : /* returns NULL and sets the Python exception if an error occurred */
178 : static PyObject *
179 74814 : set2list(fd_set *set, pylist fd2obj[FD_SETSIZE + 1])
180 : {
181 74814 : int i, j, count=0;
182 : PyObject *list, *o;
183 : SOCKET fd;
184 :
185 125728 : for (j = 0; fd2obj[j].sentinel >= 0; j++) {
186 50914 : if (FD_ISSET(fd2obj[j].fd, set))
187 24696 : count++;
188 : }
189 74814 : list = PyList_New(count);
190 74814 : if (!list)
191 0 : return NULL;
192 :
193 74814 : i = 0;
194 125728 : for (j = 0; fd2obj[j].sentinel >= 0; j++) {
195 50914 : fd = fd2obj[j].fd;
196 50914 : if (FD_ISSET(fd, set)) {
197 24696 : o = fd2obj[j].obj;
198 24696 : fd2obj[j].obj = NULL;
199 : /* transfer ownership */
200 24696 : if (PyList_SetItem(list, i, o) < 0)
201 0 : goto finally;
202 :
203 24696 : i++;
204 : }
205 : }
206 74814 : return list;
207 0 : finally:
208 0 : Py_DECREF(list);
209 0 : return NULL;
210 : }
211 :
212 : #undef SELECT_USES_HEAP
213 : #if FD_SETSIZE > 1024
214 : #define SELECT_USES_HEAP
215 : #endif /* FD_SETSIZE > 1024 */
216 :
217 : /*[clinic input]
218 : select.select
219 :
220 : rlist: object
221 : wlist: object
222 : xlist: object
223 : timeout as timeout_obj: object = None
224 : /
225 :
226 : Wait until one or more file descriptors are ready for some kind of I/O.
227 :
228 : The first three arguments are iterables of file descriptors to be waited for:
229 : rlist -- wait until ready for reading
230 : wlist -- wait until ready for writing
231 : xlist -- wait for an "exceptional condition"
232 : If only one kind of condition is required, pass [] for the other lists.
233 :
234 : A file descriptor is either a socket or file object, or a small integer
235 : gotten from a fileno() method call on one of those.
236 :
237 : The optional 4th argument specifies a timeout in seconds; it may be
238 : a floating point number to specify fractions of seconds. If it is absent
239 : or None, the call will never time out.
240 :
241 : The return value is a tuple of three lists corresponding to the first three
242 : arguments; each contains the subset of the corresponding file descriptors
243 : that are ready.
244 :
245 : *** IMPORTANT NOTICE ***
246 : On Windows, only sockets are supported; on Unix, all file
247 : descriptors can be used.
248 : [clinic start generated code]*/
249 :
250 : static PyObject *
251 24947 : select_select_impl(PyObject *module, PyObject *rlist, PyObject *wlist,
252 : PyObject *xlist, PyObject *timeout_obj)
253 : /*[clinic end generated code: output=2b3cfa824f7ae4cf input=e467f5d68033de00]*/
254 : {
255 : #ifdef SELECT_USES_HEAP
256 : pylist *rfd2obj, *wfd2obj, *efd2obj;
257 : #else /* !SELECT_USES_HEAP */
258 : /* XXX: All this should probably be implemented as follows:
259 : * - find the highest descriptor we're interested in
260 : * - add one
261 : * - that's the size
262 : * See: Stevens, APitUE, $12.5.1
263 : */
264 : pylist rfd2obj[FD_SETSIZE + 1];
265 : pylist wfd2obj[FD_SETSIZE + 1];
266 : pylist efd2obj[FD_SETSIZE + 1];
267 : #endif /* SELECT_USES_HEAP */
268 24947 : PyObject *ret = NULL;
269 : fd_set ifdset, ofdset, efdset;
270 : struct timeval tv, *tvp;
271 : int imax, omax, emax, max;
272 : int n;
273 24947 : _PyTime_t timeout, deadline = 0;
274 :
275 24947 : if (timeout_obj == Py_None)
276 2411 : tvp = (struct timeval *)NULL;
277 : else {
278 22536 : if (_PyTime_FromSecondsObject(&timeout, timeout_obj,
279 : _PyTime_ROUND_TIMEOUT) < 0) {
280 1 : if (PyErr_ExceptionMatches(PyExc_TypeError)) {
281 1 : PyErr_SetString(PyExc_TypeError,
282 : "timeout must be a float or None");
283 : }
284 1 : return NULL;
285 : }
286 :
287 22535 : if (_PyTime_AsTimeval(timeout, &tv, _PyTime_ROUND_TIMEOUT) == -1)
288 0 : return NULL;
289 22535 : if (tv.tv_sec < 0) {
290 1 : PyErr_SetString(PyExc_ValueError, "timeout must be non-negative");
291 1 : return NULL;
292 : }
293 22534 : tvp = &tv;
294 : }
295 :
296 : #ifdef SELECT_USES_HEAP
297 : /* Allocate memory for the lists */
298 : rfd2obj = PyMem_NEW(pylist, FD_SETSIZE + 1);
299 : wfd2obj = PyMem_NEW(pylist, FD_SETSIZE + 1);
300 : efd2obj = PyMem_NEW(pylist, FD_SETSIZE + 1);
301 : if (rfd2obj == NULL || wfd2obj == NULL || efd2obj == NULL) {
302 : if (rfd2obj) PyMem_Free(rfd2obj);
303 : if (wfd2obj) PyMem_Free(wfd2obj);
304 : if (efd2obj) PyMem_Free(efd2obj);
305 : return PyErr_NoMemory();
306 : }
307 : #endif /* SELECT_USES_HEAP */
308 :
309 : /* Convert iterables to fd_sets, and get maximum fd number
310 : * propagates the Python exception set in seq2set()
311 : */
312 24945 : rfd2obj[0].sentinel = -1;
313 24945 : wfd2obj[0].sentinel = -1;
314 24945 : efd2obj[0].sentinel = -1;
315 24945 : if ((imax = seq2set(rlist, &ifdset, rfd2obj)) < 0)
316 3 : goto finally;
317 24942 : if ((omax = seq2set(wlist, &ofdset, wfd2obj)) < 0)
318 0 : goto finally;
319 24942 : if ((emax = seq2set(xlist, &efdset, efd2obj)) < 0)
320 0 : goto finally;
321 :
322 24942 : max = imax;
323 24942 : if (omax > max) max = omax;
324 24942 : if (emax > max) max = emax;
325 :
326 24942 : if (tvp) {
327 22534 : deadline = _PyDeadline_Init(timeout);
328 : }
329 :
330 : do {
331 24955 : Py_BEGIN_ALLOW_THREADS
332 24955 : errno = 0;
333 24955 : n = select(
334 : max,
335 : imax ? &ifdset : NULL,
336 : omax ? &ofdset : NULL,
337 : emax ? &efdset : NULL,
338 : tvp);
339 24955 : Py_END_ALLOW_THREADS
340 :
341 24955 : if (errno != EINTR)
342 24939 : break;
343 :
344 : /* select() was interrupted by a signal */
345 16 : if (PyErr_CheckSignals())
346 3 : goto finally;
347 :
348 13 : if (tvp) {
349 5 : timeout = _PyDeadline_Get(deadline);
350 5 : if (timeout < 0) {
351 : /* bpo-35310: lists were unmodified -- clear them explicitly */
352 0 : FD_ZERO(&ifdset);
353 0 : FD_ZERO(&ofdset);
354 0 : FD_ZERO(&efdset);
355 0 : n = 0;
356 0 : break;
357 : }
358 5 : _PyTime_AsTimeval_clamp(timeout, &tv, _PyTime_ROUND_CEILING);
359 : /* retry select() with the recomputed timeout */
360 : }
361 : } while (1);
362 :
363 : #ifdef MS_WINDOWS
364 : if (n == SOCKET_ERROR) {
365 : PyErr_SetExcFromWindowsErr(PyExc_OSError, WSAGetLastError());
366 : }
367 : #else
368 24939 : if (n < 0) {
369 1 : PyErr_SetFromErrno(PyExc_OSError);
370 : }
371 : #endif
372 : else {
373 : /* any of these three calls can raise an exception. it's more
374 : convenient to test for this after all three calls... but
375 : is that acceptable?
376 : */
377 24938 : rlist = set2list(&ifdset, rfd2obj);
378 24938 : wlist = set2list(&ofdset, wfd2obj);
379 24938 : xlist = set2list(&efdset, efd2obj);
380 24938 : if (PyErr_Occurred())
381 0 : ret = NULL;
382 : else
383 24938 : ret = PyTuple_Pack(3, rlist, wlist, xlist);
384 :
385 24938 : Py_XDECREF(rlist);
386 24938 : Py_XDECREF(wlist);
387 24938 : Py_XDECREF(xlist);
388 : }
389 :
390 24945 : finally:
391 24945 : reap_obj(rfd2obj);
392 24945 : reap_obj(wfd2obj);
393 24945 : reap_obj(efd2obj);
394 : #ifdef SELECT_USES_HEAP
395 : PyMem_Free(rfd2obj);
396 : PyMem_Free(wfd2obj);
397 : PyMem_Free(efd2obj);
398 : #endif /* SELECT_USES_HEAP */
399 24945 : return ret;
400 : }
401 :
402 : #if defined(HAVE_POLL) && !defined(HAVE_BROKEN_POLL)
403 : /*
404 : * poll() support
405 : */
406 :
407 : typedef struct {
408 : PyObject_HEAD
409 : PyObject *dict;
410 : int ufd_uptodate;
411 : int ufd_len;
412 : struct pollfd *ufds;
413 : int poll_running;
414 : } pollObject;
415 :
416 : /* Update the malloc'ed array of pollfds to match the dictionary
417 : contained within a pollObject. Return 1 on success, 0 on an error.
418 : */
419 :
420 : static int
421 53251 : update_ufd_array(pollObject *self)
422 : {
423 : Py_ssize_t i, pos;
424 : PyObject *key, *value;
425 53251 : struct pollfd *old_ufds = self->ufds;
426 :
427 53251 : self->ufd_len = PyDict_GET_SIZE(self->dict);
428 53251 : PyMem_RESIZE(self->ufds, struct pollfd, self->ufd_len);
429 53251 : if (self->ufds == NULL) {
430 0 : self->ufds = old_ufds;
431 0 : PyErr_NoMemory();
432 0 : return 0;
433 : }
434 :
435 53251 : i = pos = 0;
436 242844 : while (PyDict_Next(self->dict, &pos, &key, &value)) {
437 189593 : assert(i < self->ufd_len);
438 : /* Never overflow */
439 189593 : self->ufds[i].fd = (int)PyLong_AsLong(key);
440 189593 : self->ufds[i].events = (short)(unsigned short)PyLong_AsLong(value);
441 189593 : i++;
442 : }
443 53251 : assert(i == self->ufd_len);
444 53251 : self->ufd_uptodate = 1;
445 53251 : return 1;
446 : }
447 :
448 : /*[clinic input]
449 : select.poll.register
450 :
451 : fd: fildes
452 : either an integer, or an object with a fileno() method returning an int
453 : eventmask: unsigned_short(c_default="POLLIN | POLLPRI | POLLOUT") = select.POLLIN | select.POLLPRI | select.POLLOUT
454 : an optional bitmask describing the type of events to check for
455 : /
456 :
457 : Register a file descriptor with the polling object.
458 : [clinic start generated code]*/
459 :
460 : static PyObject *
461 186597 : select_poll_register_impl(pollObject *self, int fd, unsigned short eventmask)
462 : /*[clinic end generated code: output=0dc7173c800a4a65 input=34e16cfb28d3c900]*/
463 : {
464 : PyObject *key, *value;
465 : int err;
466 :
467 : /* Add entry to the internal dictionary: the key is the
468 : file descriptor, and the value is the event mask. */
469 186597 : key = PyLong_FromLong(fd);
470 186597 : if (key == NULL)
471 0 : return NULL;
472 186597 : value = PyLong_FromLong(eventmask);
473 186597 : if (value == NULL) {
474 0 : Py_DECREF(key);
475 0 : return NULL;
476 : }
477 186597 : err = PyDict_SetItem(self->dict, key, value);
478 186597 : Py_DECREF(key);
479 186597 : Py_DECREF(value);
480 186597 : if (err < 0)
481 0 : return NULL;
482 :
483 186597 : self->ufd_uptodate = 0;
484 :
485 186597 : Py_RETURN_NONE;
486 : }
487 :
488 :
489 : /*[clinic input]
490 : select.poll.modify
491 :
492 : fd: fildes
493 : either an integer, or an object with a fileno() method returning
494 : an int
495 : eventmask: unsigned_short
496 : a bitmask describing the type of events to check for
497 : /
498 :
499 : Modify an already registered file descriptor.
500 : [clinic start generated code]*/
501 :
502 : static PyObject *
503 27 : select_poll_modify_impl(pollObject *self, int fd, unsigned short eventmask)
504 : /*[clinic end generated code: output=1a7b88bf079eff17 input=a8e383df075c32cf]*/
505 : {
506 : PyObject *key, *value;
507 : int err;
508 :
509 : /* Modify registered fd */
510 27 : key = PyLong_FromLong(fd);
511 27 : if (key == NULL)
512 0 : return NULL;
513 27 : err = PyDict_Contains(self->dict, key);
514 27 : if (err < 0) {
515 0 : Py_DECREF(key);
516 0 : return NULL;
517 : }
518 27 : if (err == 0) {
519 0 : errno = ENOENT;
520 0 : PyErr_SetFromErrno(PyExc_OSError);
521 0 : Py_DECREF(key);
522 0 : return NULL;
523 : }
524 27 : value = PyLong_FromLong(eventmask);
525 27 : if (value == NULL) {
526 0 : Py_DECREF(key);
527 0 : return NULL;
528 : }
529 27 : err = PyDict_SetItem(self->dict, key, value);
530 27 : Py_DECREF(key);
531 27 : Py_DECREF(value);
532 27 : if (err < 0)
533 0 : return NULL;
534 :
535 27 : self->ufd_uptodate = 0;
536 :
537 27 : Py_RETURN_NONE;
538 : }
539 :
540 :
541 : /*[clinic input]
542 : select.poll.unregister
543 :
544 : fd: fildes
545 : /
546 :
547 : Remove a file descriptor being tracked by the polling object.
548 : [clinic start generated code]*/
549 :
550 : static PyObject *
551 3589 : select_poll_unregister_impl(pollObject *self, int fd)
552 : /*[clinic end generated code: output=8c9f42e75e7d291b input=4b4fccc1040e79cb]*/
553 : {
554 : PyObject *key;
555 :
556 : /* Check whether the fd is already in the array */
557 3589 : key = PyLong_FromLong(fd);
558 3589 : if (key == NULL)
559 0 : return NULL;
560 :
561 3589 : if (PyDict_DelItem(self->dict, key) == -1) {
562 1 : Py_DECREF(key);
563 : /* This will simply raise the KeyError set by PyDict_DelItem
564 : if the file descriptor isn't registered. */
565 1 : return NULL;
566 : }
567 :
568 3588 : Py_DECREF(key);
569 3588 : self->ufd_uptodate = 0;
570 :
571 3588 : Py_RETURN_NONE;
572 : }
573 :
574 : /*[clinic input]
575 : select.poll.poll
576 :
577 : timeout as timeout_obj: object = None
578 : The maximum time to wait in milliseconds, or else None (or a negative
579 : value) to wait indefinitely.
580 : /
581 :
582 : Polls the set of registered file descriptors.
583 :
584 : Returns a list containing any descriptors that have events or errors to
585 : report, as a list of (fd, event) 2-tuples.
586 : [clinic start generated code]*/
587 :
588 : static PyObject *
589 75644 : select_poll_poll_impl(pollObject *self, PyObject *timeout_obj)
590 : /*[clinic end generated code: output=876e837d193ed7e4 input=c2f6953ec45e5622]*/
591 : {
592 75644 : PyObject *result_list = NULL;
593 : int poll_result, i, j;
594 75644 : PyObject *value = NULL, *num = NULL;
595 75644 : _PyTime_t timeout = -1, ms = -1, deadline = 0;
596 75644 : int async_err = 0;
597 :
598 75644 : if (timeout_obj != Py_None) {
599 33085 : if (_PyTime_FromMillisecondsObject(&timeout, timeout_obj,
600 : _PyTime_ROUND_TIMEOUT) < 0) {
601 1 : if (PyErr_ExceptionMatches(PyExc_TypeError)) {
602 0 : PyErr_SetString(PyExc_TypeError,
603 : "timeout must be an integer or None");
604 : }
605 1 : return NULL;
606 : }
607 :
608 33084 : ms = _PyTime_AsMilliseconds(timeout, _PyTime_ROUND_TIMEOUT);
609 33084 : if (ms < INT_MIN || ms > INT_MAX) {
610 2 : PyErr_SetString(PyExc_OverflowError, "timeout is too large");
611 2 : return NULL;
612 : }
613 :
614 33082 : if (timeout >= 0) {
615 33067 : deadline = _PyDeadline_Init(timeout);
616 : }
617 : }
618 :
619 : /* On some OSes, typically BSD-based ones, the timeout parameter of the
620 : poll() syscall, when negative, must be exactly INFTIM, where defined,
621 : or -1. See issue 31334. */
622 75641 : if (ms < 0) {
623 : #ifdef INFTIM
624 : ms = INFTIM;
625 : #else
626 42574 : ms = -1;
627 : #endif
628 : }
629 :
630 : /* Avoid concurrent poll() invocation, issue 8865 */
631 75641 : if (self->poll_running) {
632 1 : PyErr_SetString(PyExc_RuntimeError,
633 : "concurrent poll() invocation");
634 1 : return NULL;
635 : }
636 :
637 : /* Ensure the ufd array is up to date */
638 75640 : if (!self->ufd_uptodate)
639 53251 : if (update_ufd_array(self) == 0)
640 0 : return NULL;
641 :
642 75640 : self->poll_running = 1;
643 :
644 : /* call poll() */
645 75640 : async_err = 0;
646 : do {
647 75654 : Py_BEGIN_ALLOW_THREADS
648 75654 : errno = 0;
649 75654 : poll_result = poll(self->ufds, self->ufd_len, (int)ms);
650 75654 : Py_END_ALLOW_THREADS
651 :
652 75654 : if (errno != EINTR)
653 75639 : break;
654 :
655 : /* poll() was interrupted by a signal */
656 15 : if (PyErr_CheckSignals()) {
657 1 : async_err = 1;
658 1 : break;
659 : }
660 :
661 14 : if (timeout >= 0) {
662 5 : timeout = _PyDeadline_Get(deadline);
663 5 : if (timeout < 0) {
664 0 : poll_result = 0;
665 0 : break;
666 : }
667 5 : ms = _PyTime_AsMilliseconds(timeout, _PyTime_ROUND_CEILING);
668 : /* retry poll() with the recomputed timeout */
669 : }
670 : } while (1);
671 :
672 75640 : self->poll_running = 0;
673 :
674 75640 : if (poll_result < 0) {
675 1 : if (!async_err)
676 0 : PyErr_SetFromErrno(PyExc_OSError);
677 1 : return NULL;
678 : }
679 :
680 : /* build the result list */
681 :
682 75639 : result_list = PyList_New(poll_result);
683 75639 : if (!result_list)
684 0 : return NULL;
685 :
686 157097 : for (i = 0, j = 0; j < poll_result; j++) {
687 : /* skip to the next fired descriptor */
688 172885 : while (!self->ufds[i].revents) {
689 91427 : i++;
690 : }
691 : /* if we hit a NULL return, set value to NULL
692 : and break out of loop; code at end will
693 : clean up result_list */
694 81458 : value = PyTuple_New(2);
695 81458 : if (value == NULL)
696 0 : goto error;
697 81458 : num = PyLong_FromLong(self->ufds[i].fd);
698 81458 : if (num == NULL) {
699 0 : Py_DECREF(value);
700 0 : goto error;
701 : }
702 81458 : PyTuple_SET_ITEM(value, 0, num);
703 :
704 : /* The &0xffff is a workaround for AIX. 'revents'
705 : is a 16-bit short, and IBM assigned POLLNVAL
706 : to be 0x8000, so the conversion to int results
707 : in a negative number. See SF bug #923315. */
708 81458 : num = PyLong_FromLong(self->ufds[i].revents & 0xffff);
709 81458 : if (num == NULL) {
710 0 : Py_DECREF(value);
711 0 : goto error;
712 : }
713 81458 : PyTuple_SET_ITEM(value, 1, num);
714 81458 : PyList_SET_ITEM(result_list, j, value);
715 81458 : i++;
716 : }
717 75639 : return result_list;
718 :
719 0 : error:
720 0 : Py_DECREF(result_list);
721 0 : return NULL;
722 : }
723 :
724 : static pollObject *
725 51405 : newPollObject(PyObject *module)
726 : {
727 : pollObject *self;
728 51405 : self = PyObject_New(pollObject, get_select_state(module)->poll_Type);
729 51405 : if (self == NULL)
730 0 : return NULL;
731 : /* ufd_uptodate is a Boolean, denoting whether the
732 : array pointed to by ufds matches the contents of the dictionary. */
733 51405 : self->ufd_uptodate = 0;
734 51405 : self->ufds = NULL;
735 51405 : self->poll_running = 0;
736 51405 : self->dict = PyDict_New();
737 51405 : if (self->dict == NULL) {
738 0 : Py_DECREF(self);
739 0 : return NULL;
740 : }
741 51405 : return self;
742 : }
743 :
744 : static void
745 51405 : poll_dealloc(pollObject *self)
746 : {
747 51405 : PyObject* type = (PyObject *)Py_TYPE(self);
748 51405 : if (self->ufds != NULL)
749 51357 : PyMem_Free(self->ufds);
750 51405 : Py_XDECREF(self->dict);
751 51405 : PyObject_Free(self);
752 51405 : Py_DECREF(type);
753 51405 : }
754 :
755 :
756 : #ifdef HAVE_SYS_DEVPOLL_H
757 : static PyMethodDef devpoll_methods[];
758 :
759 : typedef struct {
760 : PyObject_HEAD
761 : int fd_devpoll;
762 : int max_n_fds;
763 : int n_fds;
764 : struct pollfd *fds;
765 : } devpollObject;
766 :
767 : static PyObject *
768 : devpoll_err_closed(void)
769 : {
770 : PyErr_SetString(PyExc_ValueError, "I/O operation on closed devpoll object");
771 : return NULL;
772 : }
773 :
774 : static int devpoll_flush(devpollObject *self)
775 : {
776 : int size, n;
777 :
778 : if (!self->n_fds) return 0;
779 :
780 : size = sizeof(struct pollfd)*self->n_fds;
781 : self->n_fds = 0;
782 :
783 : n = _Py_write(self->fd_devpoll, self->fds, size);
784 : if (n == -1)
785 : return -1;
786 :
787 : if (n < size) {
788 : /*
789 : ** Data writed to /dev/poll is a binary data structure. It is not
790 : ** clear what to do if a partial write occurred. For now, raise
791 : ** an exception and see if we actually found this problem in
792 : ** the wild.
793 : ** See http://bugs.python.org/issue6397.
794 : */
795 : PyErr_Format(PyExc_OSError, "failed to write all pollfds. "
796 : "Please, report at http://bugs.python.org/. "
797 : "Data to report: Size tried: %d, actual size written: %d.",
798 : size, n);
799 : return -1;
800 : }
801 : return 0;
802 : }
803 :
804 : static PyObject *
805 : internal_devpoll_register(devpollObject *self, int fd,
806 : unsigned short events, int remove)
807 : {
808 : if (self->fd_devpoll < 0)
809 : return devpoll_err_closed();
810 :
811 : if (remove) {
812 : self->fds[self->n_fds].fd = fd;
813 : self->fds[self->n_fds].events = POLLREMOVE;
814 :
815 : if (++self->n_fds == self->max_n_fds) {
816 : if (devpoll_flush(self))
817 : return NULL;
818 : }
819 : }
820 :
821 : self->fds[self->n_fds].fd = fd;
822 : self->fds[self->n_fds].events = (signed short)events;
823 :
824 : if (++self->n_fds == self->max_n_fds) {
825 : if (devpoll_flush(self))
826 : return NULL;
827 : }
828 :
829 : Py_RETURN_NONE;
830 : }
831 :
832 : /*[clinic input]
833 : select.devpoll.register
834 :
835 : fd: fildes
836 : either an integer, or an object with a fileno() method returning
837 : an int
838 : eventmask: unsigned_short(c_default="POLLIN | POLLPRI | POLLOUT") = select.POLLIN | select.POLLPRI | select.POLLOUT
839 : an optional bitmask describing the type of events to check for
840 : /
841 :
842 : Register a file descriptor with the polling object.
843 : [clinic start generated code]*/
844 :
845 : static PyObject *
846 : select_devpoll_register_impl(devpollObject *self, int fd,
847 : unsigned short eventmask)
848 : /*[clinic end generated code: output=6e07fe8b74abba0c input=22006fabe9567522]*/
849 : {
850 : return internal_devpoll_register(self, fd, eventmask, 0);
851 : }
852 :
853 : /*[clinic input]
854 : select.devpoll.modify
855 :
856 : fd: fildes
857 : either an integer, or an object with a fileno() method returning
858 : an int
859 : eventmask: unsigned_short(c_default="POLLIN | POLLPRI | POLLOUT") = select.POLLIN | select.POLLPRI | select.POLLOUT
860 : an optional bitmask describing the type of events to check for
861 : /
862 :
863 : Modify a possible already registered file descriptor.
864 : [clinic start generated code]*/
865 :
866 : static PyObject *
867 : select_devpoll_modify_impl(devpollObject *self, int fd,
868 : unsigned short eventmask)
869 : /*[clinic end generated code: output=bc2e6d23aaff98b4 input=09fa335db7cdc09e]*/
870 : {
871 : return internal_devpoll_register(self, fd, eventmask, 1);
872 : }
873 :
874 : /*[clinic input]
875 : select.devpoll.unregister
876 :
877 : fd: fildes
878 : /
879 :
880 : Remove a file descriptor being tracked by the polling object.
881 : [clinic start generated code]*/
882 :
883 : static PyObject *
884 : select_devpoll_unregister_impl(devpollObject *self, int fd)
885 : /*[clinic end generated code: output=95519ffa0c7d43fe input=b4ea42a4442fd467]*/
886 : {
887 : if (self->fd_devpoll < 0)
888 : return devpoll_err_closed();
889 :
890 : self->fds[self->n_fds].fd = fd;
891 : self->fds[self->n_fds].events = POLLREMOVE;
892 :
893 : if (++self->n_fds == self->max_n_fds) {
894 : if (devpoll_flush(self))
895 : return NULL;
896 : }
897 :
898 : Py_RETURN_NONE;
899 : }
900 :
901 : /*[clinic input]
902 : select.devpoll.poll
903 : timeout as timeout_obj: object = None
904 : The maximum time to wait in milliseconds, or else None (or a negative
905 : value) to wait indefinitely.
906 : /
907 :
908 : Polls the set of registered file descriptors.
909 :
910 : Returns a list containing any descriptors that have events or errors to
911 : report, as a list of (fd, event) 2-tuples.
912 : [clinic start generated code]*/
913 :
914 : static PyObject *
915 : select_devpoll_poll_impl(devpollObject *self, PyObject *timeout_obj)
916 : /*[clinic end generated code: output=2654e5457cca0b3c input=3c3f0a355ec2bedb]*/
917 : {
918 : struct dvpoll dvp;
919 : PyObject *result_list = NULL;
920 : int poll_result, i;
921 : PyObject *value, *num1, *num2;
922 : _PyTime_t timeout, ms, deadline = 0;
923 :
924 : if (self->fd_devpoll < 0)
925 : return devpoll_err_closed();
926 :
927 : /* Check values for timeout */
928 : if (timeout_obj == Py_None) {
929 : timeout = -1;
930 : ms = -1;
931 : }
932 : else {
933 : if (_PyTime_FromMillisecondsObject(&timeout, timeout_obj,
934 : _PyTime_ROUND_TIMEOUT) < 0) {
935 : if (PyErr_ExceptionMatches(PyExc_TypeError)) {
936 : PyErr_SetString(PyExc_TypeError,
937 : "timeout must be an integer or None");
938 : }
939 : return NULL;
940 : }
941 :
942 : ms = _PyTime_AsMilliseconds(timeout, _PyTime_ROUND_TIMEOUT);
943 : if (ms < -1 || ms > INT_MAX) {
944 : PyErr_SetString(PyExc_OverflowError, "timeout is too large");
945 : return NULL;
946 : }
947 : }
948 :
949 : if (devpoll_flush(self))
950 : return NULL;
951 :
952 : dvp.dp_fds = self->fds;
953 : dvp.dp_nfds = self->max_n_fds;
954 : dvp.dp_timeout = (int)ms;
955 :
956 : if (timeout >= 0) {
957 : deadline = _PyDeadline_Init(timeout);
958 : }
959 :
960 : do {
961 : /* call devpoll() */
962 : Py_BEGIN_ALLOW_THREADS
963 : errno = 0;
964 : poll_result = ioctl(self->fd_devpoll, DP_POLL, &dvp);
965 : Py_END_ALLOW_THREADS
966 :
967 : if (errno != EINTR)
968 : break;
969 :
970 : /* devpoll() was interrupted by a signal */
971 : if (PyErr_CheckSignals())
972 : return NULL;
973 :
974 : if (timeout >= 0) {
975 : timeout = _PyDeadline_Get(deadline);
976 : if (timeout < 0) {
977 : poll_result = 0;
978 : break;
979 : }
980 : ms = _PyTime_AsMilliseconds(timeout, _PyTime_ROUND_CEILING);
981 : dvp.dp_timeout = (int)ms;
982 : /* retry devpoll() with the recomputed timeout */
983 : }
984 : } while (1);
985 :
986 : if (poll_result < 0) {
987 : PyErr_SetFromErrno(PyExc_OSError);
988 : return NULL;
989 : }
990 :
991 : /* build the result list */
992 : result_list = PyList_New(poll_result);
993 : if (!result_list)
994 : return NULL;
995 :
996 : for (i = 0; i < poll_result; i++) {
997 : num1 = PyLong_FromLong(self->fds[i].fd);
998 : num2 = PyLong_FromLong(self->fds[i].revents);
999 : if ((num1 == NULL) || (num2 == NULL)) {
1000 : Py_XDECREF(num1);
1001 : Py_XDECREF(num2);
1002 : goto error;
1003 : }
1004 : value = PyTuple_Pack(2, num1, num2);
1005 : Py_DECREF(num1);
1006 : Py_DECREF(num2);
1007 : if (value == NULL)
1008 : goto error;
1009 : PyList_SET_ITEM(result_list, i, value);
1010 : }
1011 :
1012 : return result_list;
1013 :
1014 : error:
1015 : Py_DECREF(result_list);
1016 : return NULL;
1017 : }
1018 :
1019 : static int
1020 : devpoll_internal_close(devpollObject *self)
1021 : {
1022 : int save_errno = 0;
1023 : if (self->fd_devpoll >= 0) {
1024 : int fd = self->fd_devpoll;
1025 : self->fd_devpoll = -1;
1026 : Py_BEGIN_ALLOW_THREADS
1027 : if (close(fd) < 0)
1028 : save_errno = errno;
1029 : Py_END_ALLOW_THREADS
1030 : }
1031 : return save_errno;
1032 : }
1033 :
1034 : /*[clinic input]
1035 : select.devpoll.close
1036 :
1037 : Close the devpoll file descriptor.
1038 :
1039 : Further operations on the devpoll object will raise an exception.
1040 : [clinic start generated code]*/
1041 :
1042 : static PyObject *
1043 : select_devpoll_close_impl(devpollObject *self)
1044 : /*[clinic end generated code: output=26b355bd6429f21b input=6273c30f5560a99b]*/
1045 : {
1046 : errno = devpoll_internal_close(self);
1047 : if (errno < 0) {
1048 : PyErr_SetFromErrno(PyExc_OSError);
1049 : return NULL;
1050 : }
1051 : Py_RETURN_NONE;
1052 : }
1053 :
1054 : static PyObject*
1055 : devpoll_get_closed(devpollObject *self, void *Py_UNUSED(ignored))
1056 : {
1057 : if (self->fd_devpoll < 0)
1058 : Py_RETURN_TRUE;
1059 : else
1060 : Py_RETURN_FALSE;
1061 : }
1062 :
1063 : /*[clinic input]
1064 : select.devpoll.fileno
1065 :
1066 : Return the file descriptor.
1067 : [clinic start generated code]*/
1068 :
1069 : static PyObject *
1070 : select_devpoll_fileno_impl(devpollObject *self)
1071 : /*[clinic end generated code: output=26920929f8d292f4 input=ef15331ebde6c368]*/
1072 : {
1073 : if (self->fd_devpoll < 0)
1074 : return devpoll_err_closed();
1075 : return PyLong_FromLong(self->fd_devpoll);
1076 : }
1077 :
1078 : static PyGetSetDef devpoll_getsetlist[] = {
1079 : {"closed", (getter)devpoll_get_closed, NULL,
1080 : "True if the devpoll object is closed"},
1081 : {0},
1082 : };
1083 :
1084 : static devpollObject *
1085 : newDevPollObject(PyObject *module)
1086 : {
1087 : devpollObject *self;
1088 : int fd_devpoll, limit_result;
1089 : struct pollfd *fds;
1090 : struct rlimit limit;
1091 :
1092 : /*
1093 : ** If we try to process more that getrlimit()
1094 : ** fds, the kernel will give an error, so
1095 : ** we set the limit here. It is a dynamic
1096 : ** value, because we can change rlimit() anytime.
1097 : */
1098 : limit_result = getrlimit(RLIMIT_NOFILE, &limit);
1099 : if (limit_result == -1) {
1100 : PyErr_SetFromErrno(PyExc_OSError);
1101 : return NULL;
1102 : }
1103 :
1104 : fd_devpoll = _Py_open("/dev/poll", O_RDWR);
1105 : if (fd_devpoll == -1)
1106 : return NULL;
1107 :
1108 : fds = PyMem_NEW(struct pollfd, limit.rlim_cur);
1109 : if (fds == NULL) {
1110 : close(fd_devpoll);
1111 : PyErr_NoMemory();
1112 : return NULL;
1113 : }
1114 :
1115 : self = PyObject_New(devpollObject, get_select_state(module)->devpoll_Type);
1116 : if (self == NULL) {
1117 : close(fd_devpoll);
1118 : PyMem_Free(fds);
1119 : return NULL;
1120 : }
1121 : self->fd_devpoll = fd_devpoll;
1122 : self->max_n_fds = limit.rlim_cur;
1123 : self->n_fds = 0;
1124 : self->fds = fds;
1125 :
1126 : return self;
1127 : }
1128 :
1129 : static void
1130 : devpoll_dealloc(devpollObject *self)
1131 : {
1132 : PyObject *type = (PyObject *)Py_TYPE(self);
1133 : (void)devpoll_internal_close(self);
1134 : PyMem_Free(self->fds);
1135 : PyObject_Free(self);
1136 : Py_DECREF(type);
1137 : }
1138 :
1139 : static PyType_Slot devpoll_Type_slots[] = {
1140 : {Py_tp_dealloc, devpoll_dealloc},
1141 : {Py_tp_getset, devpoll_getsetlist},
1142 : {Py_tp_methods, devpoll_methods},
1143 : {0, 0},
1144 : };
1145 :
1146 : static PyType_Spec devpoll_Type_spec = {
1147 : "select.devpoll",
1148 : sizeof(devpollObject),
1149 : 0,
1150 : Py_TPFLAGS_DEFAULT | Py_TPFLAGS_DISALLOW_INSTANTIATION,
1151 : devpoll_Type_slots
1152 : };
1153 :
1154 : #endif /* HAVE_SYS_DEVPOLL_H */
1155 :
1156 :
1157 : /*[clinic input]
1158 : select.poll
1159 :
1160 : Returns a polling object.
1161 :
1162 : This object supports registering and unregistering file descriptors, and then
1163 : polling them for I/O events.
1164 : [clinic start generated code]*/
1165 :
1166 : static PyObject *
1167 51405 : select_poll_impl(PyObject *module)
1168 : /*[clinic end generated code: output=16a665a4e1d228c5 input=3f877909d5696bbf]*/
1169 : {
1170 51405 : return (PyObject *)newPollObject(module);
1171 : }
1172 :
1173 : #ifdef HAVE_SYS_DEVPOLL_H
1174 :
1175 : /*[clinic input]
1176 : select.devpoll
1177 :
1178 : Returns a polling object.
1179 :
1180 : This object supports registering and unregistering file descriptors, and then
1181 : polling them for I/O events.
1182 : [clinic start generated code]*/
1183 :
1184 : static PyObject *
1185 : select_devpoll_impl(PyObject *module)
1186 : /*[clinic end generated code: output=ea9213cc87fd9581 input=53a1af94564f00a3]*/
1187 : {
1188 : return (PyObject *)newDevPollObject(module);
1189 : }
1190 : #endif
1191 :
1192 :
1193 : #ifdef __APPLE__
1194 : /*
1195 : * On some systems poll() sets errno on invalid file descriptors. We test
1196 : * for this at runtime because this bug may be fixed or introduced between
1197 : * OS releases.
1198 : */
1199 : static int select_have_broken_poll(void)
1200 : {
1201 : int poll_test;
1202 : int filedes[2];
1203 :
1204 : struct pollfd poll_struct = { 0, POLLIN|POLLPRI|POLLOUT, 0 };
1205 :
1206 : /* Create a file descriptor to make invalid */
1207 : if (pipe(filedes) < 0) {
1208 : return 1;
1209 : }
1210 : poll_struct.fd = filedes[0];
1211 : close(filedes[0]);
1212 : close(filedes[1]);
1213 : poll_test = poll(&poll_struct, 1, 0);
1214 : if (poll_test < 0) {
1215 : return 1;
1216 : } else if (poll_test == 0 && poll_struct.revents != POLLNVAL) {
1217 : return 1;
1218 : }
1219 : return 0;
1220 : }
1221 : #endif /* __APPLE__ */
1222 :
1223 : #endif /* HAVE_POLL */
1224 :
1225 : #ifdef HAVE_EPOLL
1226 : /* **************************************************************************
1227 : * epoll interface for Linux 2.6
1228 : *
1229 : * Written by Christian Heimes
1230 : * Inspired by Twisted's _epoll.pyx and select.poll()
1231 : */
1232 :
1233 : #ifdef HAVE_SYS_EPOLL_H
1234 : #include <sys/epoll.h>
1235 : #endif
1236 :
1237 : typedef struct {
1238 : PyObject_HEAD
1239 : SOCKET epfd; /* epoll control file descriptor */
1240 : } pyEpoll_Object;
1241 :
1242 : static PyObject *
1243 7 : pyepoll_err_closed(void)
1244 : {
1245 7 : PyErr_SetString(PyExc_ValueError, "I/O operation on closed epoll object");
1246 7 : return NULL;
1247 : }
1248 :
1249 : static int
1250 5063 : pyepoll_internal_close(pyEpoll_Object *self)
1251 : {
1252 5063 : int save_errno = 0;
1253 5063 : if (self->epfd >= 0) {
1254 2535 : int epfd = self->epfd;
1255 2535 : self->epfd = -1;
1256 2535 : Py_BEGIN_ALLOW_THREADS
1257 2535 : if (close(epfd) < 0)
1258 1 : save_errno = errno;
1259 2535 : Py_END_ALLOW_THREADS
1260 : }
1261 5063 : return save_errno;
1262 : }
1263 :
1264 : static PyObject *
1265 2535 : newPyEpoll_Object(PyTypeObject *type, int sizehint, SOCKET fd)
1266 : {
1267 : pyEpoll_Object *self;
1268 2535 : assert(type != NULL);
1269 2535 : allocfunc epoll_alloc = PyType_GetSlot(type, Py_tp_alloc);
1270 2535 : assert(epoll_alloc != NULL);
1271 2535 : self = (pyEpoll_Object *) epoll_alloc(type, 0);
1272 2535 : if (self == NULL)
1273 0 : return NULL;
1274 :
1275 2535 : if (fd == -1) {
1276 2534 : Py_BEGIN_ALLOW_THREADS
1277 : #ifdef HAVE_EPOLL_CREATE1
1278 2534 : self->epfd = epoll_create1(EPOLL_CLOEXEC);
1279 : #else
1280 : self->epfd = epoll_create(sizehint);
1281 : #endif
1282 2534 : Py_END_ALLOW_THREADS
1283 : }
1284 : else {
1285 1 : self->epfd = fd;
1286 : }
1287 2535 : if (self->epfd < 0) {
1288 0 : Py_DECREF(self);
1289 0 : PyErr_SetFromErrno(PyExc_OSError);
1290 0 : return NULL;
1291 : }
1292 :
1293 : #ifndef HAVE_EPOLL_CREATE1
1294 : if (fd == -1 && _Py_set_inheritable(self->epfd, 0, NULL) < 0) {
1295 : Py_DECREF(self);
1296 : return NULL;
1297 : }
1298 : #endif
1299 :
1300 2535 : return (PyObject *)self;
1301 : }
1302 :
1303 :
1304 : /*[clinic input]
1305 : @classmethod
1306 : select.epoll.__new__
1307 :
1308 : sizehint: int = -1
1309 : The expected number of events to be registered. It must be positive,
1310 : or -1 to use the default. It is only used on older systems where
1311 : epoll_create1() is not available; otherwise it has no effect (though its
1312 : value is still checked).
1313 : flags: int = 0
1314 : Deprecated and completely ignored. However, when supplied, its value
1315 : must be 0 or select.EPOLL_CLOEXEC, otherwise OSError is raised.
1316 :
1317 : Returns an epolling object.
1318 : [clinic start generated code]*/
1319 :
1320 : static PyObject *
1321 2539 : select_epoll_impl(PyTypeObject *type, int sizehint, int flags)
1322 : /*[clinic end generated code: output=c87404e705013bb5 input=303e3295e7975e43]*/
1323 : {
1324 2539 : if (sizehint == -1) {
1325 2527 : sizehint = FD_SETSIZE - 1;
1326 : }
1327 12 : else if (sizehint <= 0) {
1328 4 : PyErr_SetString(PyExc_ValueError, "negative sizehint");
1329 4 : return NULL;
1330 : }
1331 :
1332 : #ifdef HAVE_EPOLL_CREATE1
1333 2535 : if (flags && flags != EPOLL_CLOEXEC) {
1334 1 : PyErr_SetString(PyExc_OSError, "invalid flags");
1335 1 : return NULL;
1336 : }
1337 : #endif
1338 :
1339 2534 : return newPyEpoll_Object(type, sizehint, -1);
1340 : }
1341 :
1342 :
1343 : static void
1344 2535 : pyepoll_dealloc(pyEpoll_Object *self)
1345 : {
1346 2535 : PyTypeObject* type = Py_TYPE(self);
1347 2535 : (void)pyepoll_internal_close(self);
1348 2535 : freefunc epoll_free = PyType_GetSlot(type, Py_tp_free);
1349 2535 : epoll_free((PyObject *)self);
1350 2535 : Py_DECREF((PyObject *)type);
1351 2535 : }
1352 :
1353 : /*[clinic input]
1354 : select.epoll.close
1355 :
1356 : Close the epoll control file descriptor.
1357 :
1358 : Further operations on the epoll object will raise an exception.
1359 : [clinic start generated code]*/
1360 :
1361 : static PyObject *
1362 2528 : select_epoll_close_impl(pyEpoll_Object *self)
1363 : /*[clinic end generated code: output=ee2144c446a1a435 input=ca6c66ba5a736bfd]*/
1364 : {
1365 2528 : errno = pyepoll_internal_close(self);
1366 2528 : if (errno < 0) {
1367 0 : PyErr_SetFromErrno(PyExc_OSError);
1368 0 : return NULL;
1369 : }
1370 2528 : Py_RETURN_NONE;
1371 : }
1372 :
1373 :
1374 : static PyObject*
1375 6 : pyepoll_get_closed(pyEpoll_Object *self, void *Py_UNUSED(ignored))
1376 : {
1377 6 : if (self->epfd < 0)
1378 3 : Py_RETURN_TRUE;
1379 : else
1380 3 : Py_RETURN_FALSE;
1381 : }
1382 :
1383 : /*[clinic input]
1384 : select.epoll.fileno
1385 :
1386 : Return the epoll control file descriptor.
1387 : [clinic start generated code]*/
1388 :
1389 : static PyObject *
1390 11 : select_epoll_fileno_impl(pyEpoll_Object *self)
1391 : /*[clinic end generated code: output=e171375fdc619ba3 input=c11091a6aee60b5c]*/
1392 : {
1393 11 : if (self->epfd < 0)
1394 3 : return pyepoll_err_closed();
1395 8 : return PyLong_FromLong(self->epfd);
1396 : }
1397 :
1398 :
1399 : /*[clinic input]
1400 : @classmethod
1401 : select.epoll.fromfd
1402 :
1403 : fd: int
1404 : /
1405 :
1406 : Create an epoll object from a given control fd.
1407 : [clinic start generated code]*/
1408 :
1409 : static PyObject *
1410 1 : select_epoll_fromfd_impl(PyTypeObject *type, int fd)
1411 : /*[clinic end generated code: output=c15de2a083524e8e input=faecefdb55e3046e]*/
1412 : {
1413 1 : SOCKET s_fd = (SOCKET)fd;
1414 1 : return newPyEpoll_Object(type, FD_SETSIZE - 1, s_fd);
1415 : }
1416 :
1417 :
1418 : static PyObject *
1419 70244 : pyepoll_internal_ctl(int epfd, int op, int fd, unsigned int events)
1420 : {
1421 : struct epoll_event ev;
1422 : int result;
1423 :
1424 70244 : if (epfd < 0)
1425 3 : return pyepoll_err_closed();
1426 :
1427 70241 : switch (op) {
1428 67968 : case EPOLL_CTL_ADD:
1429 : case EPOLL_CTL_MOD:
1430 67968 : ev.events = events;
1431 67968 : ev.data.fd = fd;
1432 67968 : Py_BEGIN_ALLOW_THREADS
1433 67968 : result = epoll_ctl(epfd, op, fd, &ev);
1434 67968 : Py_END_ALLOW_THREADS
1435 67968 : break;
1436 2273 : case EPOLL_CTL_DEL:
1437 : /* In kernel versions before 2.6.9, the EPOLL_CTL_DEL
1438 : * operation required a non-NULL pointer in event, even
1439 : * though this argument is ignored. */
1440 2273 : Py_BEGIN_ALLOW_THREADS
1441 2273 : result = epoll_ctl(epfd, op, fd, &ev);
1442 2273 : Py_END_ALLOW_THREADS
1443 2273 : break;
1444 0 : default:
1445 0 : result = -1;
1446 0 : errno = EINVAL;
1447 : }
1448 :
1449 70241 : if (result < 0) {
1450 16 : PyErr_SetFromErrno(PyExc_OSError);
1451 16 : return NULL;
1452 : }
1453 70225 : Py_RETURN_NONE;
1454 : }
1455 :
1456 : /*[clinic input]
1457 : select.epoll.register
1458 :
1459 : fd: fildes
1460 : the target file descriptor of the operation
1461 : eventmask: unsigned_int(c_default="EPOLLIN | EPOLLPRI | EPOLLOUT", bitwise=True) = select.EPOLLIN | select.EPOLLPRI | select.EPOLLOUT
1462 : a bit set composed of the various EPOLL constants
1463 :
1464 : Registers a new fd or raises an OSError if the fd is already registered.
1465 :
1466 : The epoll interface supports all file descriptors that support poll.
1467 : [clinic start generated code]*/
1468 :
1469 : static PyObject *
1470 67928 : select_epoll_register_impl(pyEpoll_Object *self, int fd,
1471 : unsigned int eventmask)
1472 : /*[clinic end generated code: output=318e5e6386520599 input=a5071b71edfe3578]*/
1473 : {
1474 67928 : return pyepoll_internal_ctl(self->epfd, EPOLL_CTL_ADD, fd, eventmask);
1475 : }
1476 :
1477 : /*[clinic input]
1478 : select.epoll.modify
1479 :
1480 : fd: fildes
1481 : the target file descriptor of the operation
1482 : eventmask: unsigned_int(bitwise=True)
1483 : a bit set composed of the various EPOLL constants
1484 :
1485 : Modify event mask for a registered file descriptor.
1486 : [clinic start generated code]*/
1487 :
1488 : static PyObject *
1489 42 : select_epoll_modify_impl(pyEpoll_Object *self, int fd,
1490 : unsigned int eventmask)
1491 : /*[clinic end generated code: output=7e3447307cff6f65 input=88a83dac53a8c3da]*/
1492 : {
1493 42 : return pyepoll_internal_ctl(self->epfd, EPOLL_CTL_MOD, fd, eventmask);
1494 : }
1495 :
1496 : /*[clinic input]
1497 : select.epoll.unregister
1498 :
1499 : fd: fildes
1500 : the target file descriptor of the operation
1501 :
1502 : Remove a registered file descriptor from the epoll object.
1503 : [clinic start generated code]*/
1504 :
1505 : static PyObject *
1506 2274 : select_epoll_unregister_impl(pyEpoll_Object *self, int fd)
1507 : /*[clinic end generated code: output=07c5dbd612a512d4 input=3093f68d3644743d]*/
1508 : {
1509 2274 : return pyepoll_internal_ctl(self->epfd, EPOLL_CTL_DEL, fd, 0);
1510 : }
1511 :
1512 : /*[clinic input]
1513 : select.epoll.poll
1514 :
1515 : timeout as timeout_obj: object = None
1516 : the maximum time to wait in seconds (as float);
1517 : a timeout of None or -1 makes poll wait indefinitely
1518 : maxevents: int = -1
1519 : the maximum number of events returned; -1 means no limit
1520 :
1521 : Wait for events on the epoll file descriptor.
1522 :
1523 : Returns a list containing any descriptors that have events to report,
1524 : as a list of (fd, events) 2-tuples.
1525 : [clinic start generated code]*/
1526 :
1527 : static PyObject *
1528 15106 : select_epoll_poll_impl(pyEpoll_Object *self, PyObject *timeout_obj,
1529 : int maxevents)
1530 : /*[clinic end generated code: output=e02d121a20246c6c input=33d34a5ea430fd5b]*/
1531 : {
1532 : int nfds, i;
1533 15106 : PyObject *elist = NULL, *etuple = NULL;
1534 15106 : struct epoll_event *evs = NULL;
1535 15106 : _PyTime_t timeout = -1, ms = -1, deadline = 0;
1536 :
1537 15106 : if (self->epfd < 0)
1538 1 : return pyepoll_err_closed();
1539 :
1540 15105 : if (timeout_obj != Py_None) {
1541 : /* epoll_wait() has a resolution of 1 millisecond, round towards
1542 : infinity to wait at least timeout seconds. */
1543 15105 : if (_PyTime_FromSecondsObject(&timeout, timeout_obj,
1544 : _PyTime_ROUND_TIMEOUT) < 0) {
1545 0 : if (PyErr_ExceptionMatches(PyExc_TypeError)) {
1546 0 : PyErr_SetString(PyExc_TypeError,
1547 : "timeout must be an integer or None");
1548 : }
1549 0 : return NULL;
1550 : }
1551 :
1552 15105 : ms = _PyTime_AsMilliseconds(timeout, _PyTime_ROUND_CEILING);
1553 15105 : if (ms < INT_MIN || ms > INT_MAX) {
1554 0 : PyErr_SetString(PyExc_OverflowError, "timeout is too large");
1555 0 : return NULL;
1556 : }
1557 : /* epoll_wait(2) treats all arbitrary negative numbers the same
1558 : for the timeout argument, but -1 is the documented way to block
1559 : indefinitely in the epoll_wait(2) documentation, so we set ms
1560 : to -1 if the value of ms is a negative number.
1561 :
1562 : Note that we didn't use INFTIM here since it's non-standard and
1563 : isn't available under Linux. */
1564 15105 : if (ms < 0) {
1565 2177 : ms = -1;
1566 : }
1567 :
1568 15105 : if (timeout >= 0) {
1569 12928 : deadline = _PyDeadline_Init(timeout);
1570 : }
1571 : }
1572 :
1573 15105 : if (maxevents == -1) {
1574 1 : maxevents = FD_SETSIZE-1;
1575 : }
1576 15104 : else if (maxevents < 1) {
1577 0 : PyErr_Format(PyExc_ValueError,
1578 : "maxevents must be greater than 0, got %d",
1579 : maxevents);
1580 0 : return NULL;
1581 : }
1582 :
1583 15105 : evs = PyMem_New(struct epoll_event, maxevents);
1584 15105 : if (evs == NULL) {
1585 0 : PyErr_NoMemory();
1586 0 : return NULL;
1587 : }
1588 :
1589 : do {
1590 15489 : Py_BEGIN_ALLOW_THREADS
1591 15489 : errno = 0;
1592 15489 : nfds = epoll_wait(self->epfd, evs, maxevents, (int)ms);
1593 15489 : Py_END_ALLOW_THREADS
1594 :
1595 15489 : if (errno != EINTR)
1596 15103 : break;
1597 :
1598 : /* poll() was interrupted by a signal */
1599 386 : if (PyErr_CheckSignals())
1600 2 : goto error;
1601 :
1602 384 : if (timeout >= 0) {
1603 11 : timeout = _PyDeadline_Get(deadline);
1604 11 : if (timeout < 0) {
1605 0 : nfds = 0;
1606 0 : break;
1607 : }
1608 11 : ms = _PyTime_AsMilliseconds(timeout, _PyTime_ROUND_CEILING);
1609 : /* retry epoll_wait() with the recomputed timeout */
1610 : }
1611 : } while(1);
1612 :
1613 15103 : if (nfds < 0) {
1614 1 : PyErr_SetFromErrno(PyExc_OSError);
1615 1 : goto error;
1616 : }
1617 :
1618 15102 : elist = PyList_New(nfds);
1619 15102 : if (elist == NULL) {
1620 0 : goto error;
1621 : }
1622 :
1623 53031 : for (i = 0; i < nfds; i++) {
1624 37929 : etuple = Py_BuildValue("iI", evs[i].data.fd, evs[i].events);
1625 37929 : if (etuple == NULL) {
1626 0 : Py_CLEAR(elist);
1627 0 : goto error;
1628 : }
1629 37929 : PyList_SET_ITEM(elist, i, etuple);
1630 : }
1631 :
1632 15102 : error:
1633 15105 : PyMem_Free(evs);
1634 15105 : return elist;
1635 : }
1636 :
1637 :
1638 : /*[clinic input]
1639 : select.epoll.__enter__
1640 :
1641 : [clinic start generated code]*/
1642 :
1643 : static PyObject *
1644 2 : select_epoll___enter___impl(pyEpoll_Object *self)
1645 : /*[clinic end generated code: output=ab45d433504db2a0 input=3c22568587efeadb]*/
1646 : {
1647 2 : if (self->epfd < 0)
1648 0 : return pyepoll_err_closed();
1649 :
1650 2 : Py_INCREF(self);
1651 2 : return (PyObject *)self;
1652 : }
1653 :
1654 : /*[clinic input]
1655 : select.epoll.__exit__
1656 :
1657 : exc_type: object = None
1658 : exc_value: object = None
1659 : exc_tb: object = None
1660 : /
1661 :
1662 : [clinic start generated code]*/
1663 :
1664 : static PyObject *
1665 2 : select_epoll___exit___impl(pyEpoll_Object *self, PyObject *exc_type,
1666 : PyObject *exc_value, PyObject *exc_tb)
1667 : /*[clinic end generated code: output=c480f38ce361748e input=7ae81a5a4c1a98d8]*/
1668 : {
1669 2 : _selectstate *state = _selectstate_by_type(Py_TYPE(self));
1670 2 : return PyObject_CallMethodObjArgs((PyObject *)self, state->close, NULL);
1671 : }
1672 :
1673 : static PyGetSetDef pyepoll_getsetlist[] = {
1674 : {"closed", (getter)pyepoll_get_closed, NULL,
1675 : "True if the epoll handler is closed"},
1676 : {0},
1677 : };
1678 :
1679 : PyDoc_STRVAR(pyepoll_doc,
1680 : "select.epoll(sizehint=-1, flags=0)\n\
1681 : \n\
1682 : Returns an epolling object\n\
1683 : \n\
1684 : sizehint must be a positive integer or -1 for the default size. The\n\
1685 : sizehint is used to optimize internal data structures. It doesn't limit\n\
1686 : the maximum number of monitored events.");
1687 :
1688 : #endif /* HAVE_EPOLL */
1689 :
1690 : #ifdef HAVE_KQUEUE
1691 : /* **************************************************************************
1692 : * kqueue interface for BSD
1693 : *
1694 : * Copyright (c) 2000 Doug White, 2006 James Knight, 2007 Christian Heimes
1695 : * All rights reserved.
1696 : *
1697 : * Redistribution and use in source and binary forms, with or without
1698 : * modification, are permitted provided that the following conditions
1699 : * are met:
1700 : * 1. Redistributions of source code must retain the above copyright
1701 : * notice, this list of conditions and the following disclaimer.
1702 : * 2. Redistributions in binary form must reproduce the above copyright
1703 : * notice, this list of conditions and the following disclaimer in the
1704 : * documentation and/or other materials provided with the distribution.
1705 : *
1706 : * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
1707 : * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
1708 : * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
1709 : * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
1710 : * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
1711 : * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
1712 : * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
1713 : * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
1714 : * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
1715 : * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
1716 : * SUCH DAMAGE.
1717 : */
1718 :
1719 : #ifdef HAVE_SYS_EVENT_H
1720 : #include <sys/event.h>
1721 : #endif
1722 :
1723 : PyDoc_STRVAR(kqueue_event_doc,
1724 : "kevent(ident, filter=KQ_FILTER_READ, flags=KQ_EV_ADD, fflags=0, data=0, udata=0)\n\
1725 : \n\
1726 : This object is the equivalent of the struct kevent for the C API.\n\
1727 : \n\
1728 : See the kqueue manpage for more detailed information about the meaning\n\
1729 : of the arguments.\n\
1730 : \n\
1731 : One minor note: while you might hope that udata could store a\n\
1732 : reference to a python object, it cannot, because it is impossible to\n\
1733 : keep a proper reference count of the object once it's passed into the\n\
1734 : kernel. Therefore, I have restricted it to only storing an integer. I\n\
1735 : recommend ignoring it and simply using the 'ident' field to key off\n\
1736 : of. You could also set up a dictionary on the python side to store a\n\
1737 : udata->object mapping.");
1738 :
1739 : typedef struct {
1740 : PyObject_HEAD
1741 : struct kevent e;
1742 : } kqueue_event_Object;
1743 :
1744 : #define kqueue_event_Check(op, state) (PyObject_TypeCheck((op), state->kqueue_event_Type))
1745 :
1746 : typedef struct {
1747 : PyObject_HEAD
1748 : SOCKET kqfd; /* kqueue control fd */
1749 : } kqueue_queue_Object;
1750 :
1751 : #if (SIZEOF_UINTPTR_T != SIZEOF_VOID_P)
1752 : # error uintptr_t does not match void *!
1753 : #elif (SIZEOF_UINTPTR_T == SIZEOF_LONG_LONG)
1754 : # define T_UINTPTRT T_ULONGLONG
1755 : # define T_INTPTRT T_LONGLONG
1756 : # define UINTPTRT_FMT_UNIT "K"
1757 : # define INTPTRT_FMT_UNIT "L"
1758 : #elif (SIZEOF_UINTPTR_T == SIZEOF_LONG)
1759 : # define T_UINTPTRT T_ULONG
1760 : # define T_INTPTRT T_LONG
1761 : # define UINTPTRT_FMT_UNIT "k"
1762 : # define INTPTRT_FMT_UNIT "l"
1763 : #elif (SIZEOF_UINTPTR_T == SIZEOF_INT)
1764 : # define T_UINTPTRT T_UINT
1765 : # define T_INTPTRT T_INT
1766 : # define UINTPTRT_FMT_UNIT "I"
1767 : # define INTPTRT_FMT_UNIT "i"
1768 : #else
1769 : # error uintptr_t does not match int, long, or long long!
1770 : #endif
1771 :
1772 : #if SIZEOF_LONG_LONG == 8
1773 : # define T_INT64 T_LONGLONG
1774 : # define INT64_FMT_UNIT "L"
1775 : #elif SIZEOF_LONG == 8
1776 : # define T_INT64 T_LONG
1777 : # define INT64_FMT_UNIT "l"
1778 : #elif SIZEOF_INT == 8
1779 : # define T_INT64 T_INT
1780 : # define INT64_FMT_UNIT "i"
1781 : #else
1782 : # define INT64_FMT_UNIT "_"
1783 : #endif
1784 :
1785 : #if SIZEOF_LONG_LONG == 4
1786 : # define T_UINT32 T_ULONGLONG
1787 : # define UINT32_FMT_UNIT "K"
1788 : #elif SIZEOF_LONG == 4
1789 : # define T_UINT32 T_ULONG
1790 : # define UINT32_FMT_UNIT "k"
1791 : #elif SIZEOF_INT == 4
1792 : # define T_UINT32 T_UINT
1793 : # define UINT32_FMT_UNIT "I"
1794 : #else
1795 : # define UINT32_FMT_UNIT "_"
1796 : #endif
1797 :
1798 : /*
1799 : * kevent is not standard and its members vary across BSDs.
1800 : */
1801 : #ifdef __NetBSD__
1802 : # define FILTER_TYPE T_UINT32
1803 : # define FILTER_FMT_UNIT UINT32_FMT_UNIT
1804 : # define FLAGS_TYPE T_UINT32
1805 : # define FLAGS_FMT_UNIT UINT32_FMT_UNIT
1806 : # define FFLAGS_TYPE T_UINT32
1807 : # define FFLAGS_FMT_UNIT UINT32_FMT_UNIT
1808 : #else
1809 : # define FILTER_TYPE T_SHORT
1810 : # define FILTER_FMT_UNIT "h"
1811 : # define FLAGS_TYPE T_USHORT
1812 : # define FLAGS_FMT_UNIT "H"
1813 : # define FFLAGS_TYPE T_UINT
1814 : # define FFLAGS_FMT_UNIT "I"
1815 : #endif
1816 :
1817 : #if defined(__NetBSD__) || defined(__OpenBSD__)
1818 : # define DATA_TYPE T_INT64
1819 : # define DATA_FMT_UNIT INT64_FMT_UNIT
1820 : #else
1821 : # define DATA_TYPE T_INTPTRT
1822 : # define DATA_FMT_UNIT INTPTRT_FMT_UNIT
1823 : #endif
1824 :
1825 : /* Unfortunately, we can't store python objects in udata, because
1826 : * kevents in the kernel can be removed without warning, which would
1827 : * forever lose the refcount on the object stored with it.
1828 : */
1829 :
1830 : #define KQ_OFF(x) offsetof(kqueue_event_Object, x)
1831 : static struct PyMemberDef kqueue_event_members[] = {
1832 : {"ident", T_UINTPTRT, KQ_OFF(e.ident)},
1833 : {"filter", FILTER_TYPE, KQ_OFF(e.filter)},
1834 : {"flags", FLAGS_TYPE, KQ_OFF(e.flags)},
1835 : {"fflags", T_UINT, KQ_OFF(e.fflags)},
1836 : {"data", DATA_TYPE, KQ_OFF(e.data)},
1837 : {"udata", T_UINTPTRT, KQ_OFF(e.udata)},
1838 : {NULL} /* Sentinel */
1839 : };
1840 : #undef KQ_OFF
1841 :
1842 : static PyObject *
1843 :
1844 : kqueue_event_repr(kqueue_event_Object *s)
1845 : {
1846 : char buf[1024];
1847 : PyOS_snprintf(
1848 : buf, sizeof(buf),
1849 : "<select.kevent ident=%zu filter=%d flags=0x%x fflags=0x%x "
1850 : "data=0x%llx udata=%p>",
1851 : (size_t)(s->e.ident), (int)s->e.filter, (unsigned int)s->e.flags,
1852 : (unsigned int)s->e.fflags, (long long)(s->e.data), (void *)s->e.udata);
1853 : return PyUnicode_FromString(buf);
1854 : }
1855 :
1856 : static int
1857 : kqueue_event_init(kqueue_event_Object *self, PyObject *args, PyObject *kwds)
1858 : {
1859 : PyObject *pfd;
1860 : static char *kwlist[] = {"ident", "filter", "flags", "fflags",
1861 : "data", "udata", NULL};
1862 : static const char fmt[] = "O|"
1863 : FILTER_FMT_UNIT FLAGS_FMT_UNIT FFLAGS_FMT_UNIT DATA_FMT_UNIT
1864 : UINTPTRT_FMT_UNIT ":kevent";
1865 :
1866 : EV_SET(&(self->e), 0, EVFILT_READ, EV_ADD, 0, 0, 0); /* defaults */
1867 :
1868 : if (!PyArg_ParseTupleAndKeywords(args, kwds, fmt, kwlist,
1869 : &pfd, &(self->e.filter), &(self->e.flags),
1870 : &(self->e.fflags), &(self->e.data), &(self->e.udata))) {
1871 : return -1;
1872 : }
1873 :
1874 : if (PyLong_Check(pfd)) {
1875 : self->e.ident = PyLong_AsSize_t(pfd);
1876 : }
1877 : else {
1878 : self->e.ident = PyObject_AsFileDescriptor(pfd);
1879 : }
1880 : if (PyErr_Occurred()) {
1881 : return -1;
1882 : }
1883 : return 0;
1884 : }
1885 :
1886 : static PyObject *
1887 : kqueue_event_richcompare(kqueue_event_Object *s, kqueue_event_Object *o,
1888 : int op)
1889 : {
1890 : int result;
1891 : _selectstate *state = _selectstate_by_type(Py_TYPE(s));
1892 :
1893 : if (!kqueue_event_Check(o, state)) {
1894 : Py_RETURN_NOTIMPLEMENTED;
1895 : }
1896 :
1897 : #define CMP(a, b) ((a) != (b)) ? ((a) < (b) ? -1 : 1)
1898 : result = CMP(s->e.ident, o->e.ident)
1899 : : CMP(s->e.filter, o->e.filter)
1900 : : CMP(s->e.flags, o->e.flags)
1901 : : CMP(s->e.fflags, o->e.fflags)
1902 : : CMP(s->e.data, o->e.data)
1903 : : CMP((intptr_t)s->e.udata, (intptr_t)o->e.udata)
1904 : : 0;
1905 : #undef CMP
1906 :
1907 : Py_RETURN_RICHCOMPARE(result, 0, op);
1908 : }
1909 :
1910 : static PyType_Slot kqueue_event_Type_slots[] = {
1911 : {Py_tp_doc, (void*)kqueue_event_doc},
1912 : {Py_tp_init, kqueue_event_init},
1913 : {Py_tp_members, kqueue_event_members},
1914 : {Py_tp_new, PyType_GenericNew},
1915 : {Py_tp_repr, kqueue_event_repr},
1916 : {Py_tp_richcompare, kqueue_event_richcompare},
1917 : {0, 0},
1918 : };
1919 :
1920 : static PyType_Spec kqueue_event_Type_spec = {
1921 : "select.kevent",
1922 : sizeof(kqueue_event_Object),
1923 : 0,
1924 : Py_TPFLAGS_DEFAULT,
1925 : kqueue_event_Type_slots
1926 : };
1927 :
1928 : static PyObject *
1929 : kqueue_queue_err_closed(void)
1930 : {
1931 : PyErr_SetString(PyExc_ValueError, "I/O operation on closed kqueue object");
1932 : return NULL;
1933 : }
1934 :
1935 : static int
1936 : kqueue_queue_internal_close(kqueue_queue_Object *self)
1937 : {
1938 : int save_errno = 0;
1939 : if (self->kqfd >= 0) {
1940 : int kqfd = self->kqfd;
1941 : self->kqfd = -1;
1942 : Py_BEGIN_ALLOW_THREADS
1943 : if (close(kqfd) < 0)
1944 : save_errno = errno;
1945 : Py_END_ALLOW_THREADS
1946 : }
1947 : return save_errno;
1948 : }
1949 :
1950 : static PyObject *
1951 : newKqueue_Object(PyTypeObject *type, SOCKET fd)
1952 : {
1953 : kqueue_queue_Object *self;
1954 : assert(type != NULL);
1955 : allocfunc queue_alloc = PyType_GetSlot(type, Py_tp_alloc);
1956 : assert(queue_alloc != NULL);
1957 : self = (kqueue_queue_Object *) queue_alloc(type, 0);
1958 : if (self == NULL) {
1959 : return NULL;
1960 : }
1961 :
1962 : if (fd == -1) {
1963 : Py_BEGIN_ALLOW_THREADS
1964 : self->kqfd = kqueue();
1965 : Py_END_ALLOW_THREADS
1966 : }
1967 : else {
1968 : self->kqfd = fd;
1969 : }
1970 : if (self->kqfd < 0) {
1971 : Py_DECREF(self);
1972 : PyErr_SetFromErrno(PyExc_OSError);
1973 : return NULL;
1974 : }
1975 :
1976 : if (fd == -1) {
1977 : if (_Py_set_inheritable(self->kqfd, 0, NULL) < 0) {
1978 : Py_DECREF(self);
1979 : return NULL;
1980 : }
1981 : }
1982 : return (PyObject *)self;
1983 : }
1984 :
1985 : /*[clinic input]
1986 : @classmethod
1987 : select.kqueue.__new__
1988 :
1989 : Kqueue syscall wrapper.
1990 :
1991 : For example, to start watching a socket for input:
1992 : >>> kq = kqueue()
1993 : >>> sock = socket()
1994 : >>> sock.connect((host, port))
1995 : >>> kq.control([kevent(sock, KQ_FILTER_WRITE, KQ_EV_ADD)], 0)
1996 :
1997 : To wait one second for it to become writeable:
1998 : >>> kq.control(None, 1, 1000)
1999 :
2000 : To stop listening:
2001 : >>> kq.control([kevent(sock, KQ_FILTER_WRITE, KQ_EV_DELETE)], 0)
2002 : [clinic start generated code]*/
2003 :
2004 : static PyObject *
2005 : select_kqueue_impl(PyTypeObject *type)
2006 : /*[clinic end generated code: output=e0ff89f154d56236 input=cf625e49218366e8]*/
2007 : {
2008 : return newKqueue_Object(type, -1);
2009 : }
2010 :
2011 : static void
2012 : kqueue_queue_dealloc(kqueue_queue_Object *self)
2013 : {
2014 : PyTypeObject* type = Py_TYPE(self);
2015 : kqueue_queue_internal_close(self);
2016 : freefunc kqueue_free = PyType_GetSlot(type, Py_tp_free);
2017 : kqueue_free((PyObject *)self);
2018 : Py_DECREF((PyObject *)type);
2019 : }
2020 :
2021 : /*[clinic input]
2022 : select.kqueue.close
2023 :
2024 : Close the kqueue control file descriptor.
2025 :
2026 : Further operations on the kqueue object will raise an exception.
2027 : [clinic start generated code]*/
2028 :
2029 : static PyObject *
2030 : select_kqueue_close_impl(kqueue_queue_Object *self)
2031 : /*[clinic end generated code: output=d1c7df0b407a4bc1 input=0b12d95430e0634c]*/
2032 : {
2033 : errno = kqueue_queue_internal_close(self);
2034 : if (errno < 0) {
2035 : PyErr_SetFromErrno(PyExc_OSError);
2036 : return NULL;
2037 : }
2038 : Py_RETURN_NONE;
2039 : }
2040 :
2041 : static PyObject*
2042 : kqueue_queue_get_closed(kqueue_queue_Object *self, void *Py_UNUSED(ignored))
2043 : {
2044 : if (self->kqfd < 0)
2045 : Py_RETURN_TRUE;
2046 : else
2047 : Py_RETURN_FALSE;
2048 : }
2049 :
2050 : /*[clinic input]
2051 : select.kqueue.fileno
2052 :
2053 : Return the kqueue control file descriptor.
2054 : [clinic start generated code]*/
2055 :
2056 : static PyObject *
2057 : select_kqueue_fileno_impl(kqueue_queue_Object *self)
2058 : /*[clinic end generated code: output=716f46112a4f6e5c input=41911c539ca2b0ca]*/
2059 : {
2060 : if (self->kqfd < 0)
2061 : return kqueue_queue_err_closed();
2062 : return PyLong_FromLong(self->kqfd);
2063 : }
2064 :
2065 : /*[clinic input]
2066 : @classmethod
2067 : select.kqueue.fromfd
2068 :
2069 : fd: int
2070 : /
2071 :
2072 : Create a kqueue object from a given control fd.
2073 : [clinic start generated code]*/
2074 :
2075 : static PyObject *
2076 : select_kqueue_fromfd_impl(PyTypeObject *type, int fd)
2077 : /*[clinic end generated code: output=d02c3c7dc538a653 input=f6172a48ca4ecdd0]*/
2078 : {
2079 : SOCKET s_fd = (SOCKET)fd;
2080 :
2081 : return newKqueue_Object(type, s_fd);
2082 : }
2083 :
2084 : /*[clinic input]
2085 : select.kqueue.control
2086 :
2087 : changelist: object
2088 : Must be an iterable of kevent objects describing the changes to be made
2089 : to the kernel's watch list or None.
2090 : maxevents: int
2091 : The maximum number of events that the kernel will return.
2092 : timeout as otimeout: object = None
2093 : The maximum time to wait in seconds, or else None to wait forever.
2094 : This accepts floats for smaller timeouts, too.
2095 : /
2096 :
2097 : Calls the kernel kevent function.
2098 : [clinic start generated code]*/
2099 :
2100 : static PyObject *
2101 : select_kqueue_control_impl(kqueue_queue_Object *self, PyObject *changelist,
2102 : int maxevents, PyObject *otimeout)
2103 : /*[clinic end generated code: output=81324ff5130db7ae input=59c4e30811209c47]*/
2104 : {
2105 : int gotevents = 0;
2106 : int nchanges = 0;
2107 : int i = 0;
2108 : PyObject *seq = NULL, *ei = NULL;
2109 : PyObject *result = NULL;
2110 : struct kevent *evl = NULL;
2111 : struct kevent *chl = NULL;
2112 : struct timespec timeoutspec;
2113 : struct timespec *ptimeoutspec;
2114 : _PyTime_t timeout, deadline = 0;
2115 : _selectstate *state = _selectstate_by_type(Py_TYPE(self));
2116 :
2117 : if (self->kqfd < 0)
2118 : return kqueue_queue_err_closed();
2119 :
2120 : if (maxevents < 0) {
2121 : PyErr_Format(PyExc_ValueError,
2122 : "Length of eventlist must be 0 or positive, got %d",
2123 : maxevents);
2124 : return NULL;
2125 : }
2126 :
2127 : if (otimeout == Py_None) {
2128 : ptimeoutspec = NULL;
2129 : }
2130 : else {
2131 : if (_PyTime_FromSecondsObject(&timeout,
2132 : otimeout, _PyTime_ROUND_TIMEOUT) < 0) {
2133 : PyErr_Format(PyExc_TypeError,
2134 : "timeout argument must be a number "
2135 : "or None, got %.200s",
2136 : _PyType_Name(Py_TYPE(otimeout)));
2137 : return NULL;
2138 : }
2139 :
2140 : if (_PyTime_AsTimespec(timeout, &timeoutspec) == -1)
2141 : return NULL;
2142 :
2143 : if (timeoutspec.tv_sec < 0) {
2144 : PyErr_SetString(PyExc_ValueError,
2145 : "timeout must be positive or None");
2146 : return NULL;
2147 : }
2148 : ptimeoutspec = &timeoutspec;
2149 : }
2150 :
2151 : if (changelist != Py_None) {
2152 : seq = PySequence_Fast(changelist, "changelist is not iterable");
2153 : if (seq == NULL) {
2154 : return NULL;
2155 : }
2156 : if (PySequence_Fast_GET_SIZE(seq) > INT_MAX) {
2157 : PyErr_SetString(PyExc_OverflowError,
2158 : "changelist is too long");
2159 : goto error;
2160 : }
2161 : nchanges = (int)PySequence_Fast_GET_SIZE(seq);
2162 :
2163 : chl = PyMem_New(struct kevent, nchanges);
2164 : if (chl == NULL) {
2165 : PyErr_NoMemory();
2166 : goto error;
2167 : }
2168 : _selectstate *state = _selectstate_by_type(Py_TYPE(self));
2169 : for (i = 0; i < nchanges; ++i) {
2170 : ei = PySequence_Fast_GET_ITEM(seq, i);
2171 : if (!kqueue_event_Check(ei, state)) {
2172 : PyErr_SetString(PyExc_TypeError,
2173 : "changelist must be an iterable of "
2174 : "select.kevent objects");
2175 : goto error;
2176 : }
2177 : chl[i] = ((kqueue_event_Object *)ei)->e;
2178 : }
2179 : Py_CLEAR(seq);
2180 : }
2181 :
2182 : /* event list */
2183 : if (maxevents) {
2184 : evl = PyMem_New(struct kevent, maxevents);
2185 : if (evl == NULL) {
2186 : PyErr_NoMemory();
2187 : goto error;
2188 : }
2189 : }
2190 :
2191 : if (ptimeoutspec) {
2192 : deadline = _PyDeadline_Init(timeout);
2193 : }
2194 :
2195 : do {
2196 : Py_BEGIN_ALLOW_THREADS
2197 : errno = 0;
2198 : gotevents = kevent(self->kqfd, chl, nchanges,
2199 : evl, maxevents, ptimeoutspec);
2200 : Py_END_ALLOW_THREADS
2201 :
2202 : if (errno != EINTR)
2203 : break;
2204 :
2205 : /* kevent() was interrupted by a signal */
2206 : if (PyErr_CheckSignals())
2207 : goto error;
2208 :
2209 : if (ptimeoutspec) {
2210 : timeout = _PyDeadline_Get(deadline);
2211 : if (timeout < 0) {
2212 : gotevents = 0;
2213 : break;
2214 : }
2215 : if (_PyTime_AsTimespec(timeout, &timeoutspec) == -1)
2216 : goto error;
2217 : /* retry kevent() with the recomputed timeout */
2218 : }
2219 : } while (1);
2220 :
2221 : if (gotevents == -1) {
2222 : PyErr_SetFromErrno(PyExc_OSError);
2223 : goto error;
2224 : }
2225 :
2226 : result = PyList_New(gotevents);
2227 : if (result == NULL) {
2228 : goto error;
2229 : }
2230 :
2231 : for (i = 0; i < gotevents; i++) {
2232 : kqueue_event_Object *ch;
2233 :
2234 : ch = PyObject_New(kqueue_event_Object, state->kqueue_event_Type);
2235 : if (ch == NULL) {
2236 : goto error;
2237 : }
2238 : ch->e = evl[i];
2239 : PyList_SET_ITEM(result, i, (PyObject *)ch);
2240 : }
2241 : PyMem_Free(chl);
2242 : PyMem_Free(evl);
2243 : return result;
2244 :
2245 : error:
2246 : PyMem_Free(chl);
2247 : PyMem_Free(evl);
2248 : Py_XDECREF(result);
2249 : Py_XDECREF(seq);
2250 : return NULL;
2251 : }
2252 :
2253 : static PyGetSetDef kqueue_queue_getsetlist[] = {
2254 : {"closed", (getter)kqueue_queue_get_closed, NULL,
2255 : "True if the kqueue handler is closed"},
2256 : {0},
2257 : };
2258 :
2259 : #endif /* HAVE_KQUEUE */
2260 :
2261 :
2262 : /* ************************************************************************ */
2263 :
2264 : #include "clinic/selectmodule.c.h"
2265 :
2266 : #if defined(HAVE_POLL) && !defined(HAVE_BROKEN_POLL)
2267 :
2268 : static PyMethodDef poll_methods[] = {
2269 : SELECT_POLL_REGISTER_METHODDEF
2270 : SELECT_POLL_MODIFY_METHODDEF
2271 : SELECT_POLL_UNREGISTER_METHODDEF
2272 : SELECT_POLL_POLL_METHODDEF
2273 : {NULL, NULL} /* sentinel */
2274 : };
2275 :
2276 :
2277 : static PyType_Slot poll_Type_slots[] = {
2278 : {Py_tp_dealloc, poll_dealloc},
2279 : {Py_tp_methods, poll_methods},
2280 : {0, 0},
2281 : };
2282 :
2283 : static PyType_Spec poll_Type_spec = {
2284 : .name = "select.poll",
2285 : .basicsize = sizeof(pollObject),
2286 : .flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_DISALLOW_INSTANTIATION,
2287 : .slots = poll_Type_slots,
2288 : };
2289 :
2290 : #ifdef HAVE_SYS_DEVPOLL_H
2291 :
2292 : static PyMethodDef devpoll_methods[] = {
2293 : SELECT_DEVPOLL_REGISTER_METHODDEF
2294 : SELECT_DEVPOLL_MODIFY_METHODDEF
2295 : SELECT_DEVPOLL_UNREGISTER_METHODDEF
2296 : SELECT_DEVPOLL_POLL_METHODDEF
2297 : SELECT_DEVPOLL_CLOSE_METHODDEF
2298 : SELECT_DEVPOLL_FILENO_METHODDEF
2299 : {NULL, NULL} /* sentinel */
2300 : };
2301 :
2302 : #endif /* HAVE_SYS_DEVPOLL_H */
2303 :
2304 : #endif /* HAVE_POLL */
2305 :
2306 : #ifdef HAVE_EPOLL
2307 :
2308 : static PyMethodDef pyepoll_methods[] = {
2309 : SELECT_EPOLL_FROMFD_METHODDEF
2310 : SELECT_EPOLL_CLOSE_METHODDEF
2311 : SELECT_EPOLL_FILENO_METHODDEF
2312 : SELECT_EPOLL_MODIFY_METHODDEF
2313 : SELECT_EPOLL_REGISTER_METHODDEF
2314 : SELECT_EPOLL_UNREGISTER_METHODDEF
2315 : SELECT_EPOLL_POLL_METHODDEF
2316 : SELECT_EPOLL___ENTER___METHODDEF
2317 : SELECT_EPOLL___EXIT___METHODDEF
2318 : {NULL, NULL},
2319 : };
2320 :
2321 : static PyType_Slot pyEpoll_Type_slots[] = {
2322 : {Py_tp_dealloc, pyepoll_dealloc},
2323 : {Py_tp_doc, (void*)pyepoll_doc},
2324 : {Py_tp_getattro, PyObject_GenericGetAttr},
2325 : {Py_tp_getset, pyepoll_getsetlist},
2326 : {Py_tp_methods, pyepoll_methods},
2327 : {Py_tp_new, select_epoll},
2328 : {0, 0},
2329 : };
2330 :
2331 : static PyType_Spec pyEpoll_Type_spec = {
2332 : "select.epoll",
2333 : sizeof(pyEpoll_Object),
2334 : 0,
2335 : Py_TPFLAGS_DEFAULT,
2336 : pyEpoll_Type_slots
2337 : };
2338 :
2339 : #endif /* HAVE_EPOLL */
2340 :
2341 : #ifdef HAVE_KQUEUE
2342 :
2343 : static PyMethodDef kqueue_queue_methods[] = {
2344 : SELECT_KQUEUE_FROMFD_METHODDEF
2345 : SELECT_KQUEUE_CLOSE_METHODDEF
2346 : SELECT_KQUEUE_FILENO_METHODDEF
2347 : SELECT_KQUEUE_CONTROL_METHODDEF
2348 : {NULL, NULL},
2349 : };
2350 :
2351 : static PyType_Slot kqueue_queue_Type_slots[] = {
2352 : {Py_tp_dealloc, kqueue_queue_dealloc},
2353 : {Py_tp_doc, (void*)select_kqueue__doc__},
2354 : {Py_tp_getset, kqueue_queue_getsetlist},
2355 : {Py_tp_methods, kqueue_queue_methods},
2356 : {Py_tp_new, select_kqueue},
2357 : {0, 0},
2358 : };
2359 :
2360 : static PyType_Spec kqueue_queue_Type_spec = {
2361 : "select.kqueue",
2362 : sizeof(kqueue_queue_Object),
2363 : 0,
2364 : Py_TPFLAGS_DEFAULT,
2365 : kqueue_queue_Type_slots
2366 : };
2367 :
2368 : #endif /* HAVE_KQUEUE */
2369 :
2370 :
2371 :
2372 :
2373 :
2374 : /* ************************************************************************ */
2375 :
2376 :
2377 : static PyMethodDef select_methods[] = {
2378 : SELECT_SELECT_METHODDEF
2379 : SELECT_POLL_METHODDEF
2380 : SELECT_DEVPOLL_METHODDEF
2381 : {0, 0}, /* sentinel */
2382 : };
2383 :
2384 : PyDoc_STRVAR(module_doc,
2385 : "This module supports asynchronous I/O on multiple file descriptors.\n\
2386 : \n\
2387 : *** IMPORTANT NOTICE ***\n\
2388 : On Windows, only sockets are supported; on Unix, all file descriptors.");
2389 :
2390 :
2391 :
2392 : static int
2393 39104 : _select_traverse(PyObject *module, visitproc visit, void *arg)
2394 : {
2395 39104 : _selectstate *state = get_select_state(module);
2396 :
2397 39104 : Py_VISIT(state->close);
2398 39104 : Py_VISIT(state->poll_Type);
2399 39104 : Py_VISIT(state->devpoll_Type);
2400 39104 : Py_VISIT(state->pyEpoll_Type);
2401 39104 : Py_VISIT(state->kqueue_event_Type);
2402 39104 : Py_VISIT(state->kqueue_queue_Type);
2403 39104 : return 0;
2404 : }
2405 :
2406 : static int
2407 2428 : _select_clear(PyObject *module)
2408 : {
2409 2428 : _selectstate *state = get_select_state(module);
2410 :
2411 2428 : Py_CLEAR(state->close);
2412 2428 : Py_CLEAR(state->poll_Type);
2413 2428 : Py_CLEAR(state->devpoll_Type);
2414 2428 : Py_CLEAR(state->pyEpoll_Type);
2415 2428 : Py_CLEAR(state->kqueue_event_Type);
2416 2428 : Py_CLEAR(state->kqueue_queue_Type);
2417 2428 : return 0;
2418 : }
2419 :
2420 : static void
2421 1214 : _select_free(void *module)
2422 : {
2423 1214 : _select_clear((PyObject *)module);
2424 1214 : }
2425 :
2426 : int
2427 1214 : _select_exec(PyObject *m)
2428 : {
2429 1214 : _selectstate *state = get_select_state(m);
2430 :
2431 1214 : state->close = PyUnicode_InternFromString("close");
2432 1214 : if (state->close == NULL) {
2433 0 : return -1;
2434 : }
2435 1214 : if (PyModule_AddObjectRef(m, "error", PyExc_OSError) < 0) {
2436 0 : return -1;
2437 : }
2438 :
2439 : #ifdef PIPE_BUF
2440 : #ifdef HAVE_BROKEN_PIPE_BUF
2441 : #undef PIPE_BUF
2442 : #define PIPE_BUF 512
2443 : #endif
2444 1214 : PyModule_AddIntMacro(m, PIPE_BUF);
2445 : #endif
2446 :
2447 : #if defined(HAVE_POLL) && !defined(HAVE_BROKEN_POLL)
2448 : #ifdef __APPLE__
2449 : if (select_have_broken_poll()) {
2450 : if (PyObject_DelAttrString(m, "poll") == -1) {
2451 : PyErr_Clear();
2452 : }
2453 : } else {
2454 : #else
2455 : {
2456 : #endif
2457 1214 : state->poll_Type = (PyTypeObject *)PyType_FromModuleAndSpec(
2458 : m, &poll_Type_spec, NULL);
2459 1214 : if (state->poll_Type == NULL) {
2460 0 : return -1;
2461 : }
2462 :
2463 1214 : PyModule_AddIntMacro(m, POLLIN);
2464 1214 : PyModule_AddIntMacro(m, POLLPRI);
2465 1214 : PyModule_AddIntMacro(m, POLLOUT);
2466 1214 : PyModule_AddIntMacro(m, POLLERR);
2467 1214 : PyModule_AddIntMacro(m, POLLHUP);
2468 1214 : PyModule_AddIntMacro(m, POLLNVAL);
2469 :
2470 : #ifdef POLLRDNORM
2471 1214 : PyModule_AddIntMacro(m, POLLRDNORM);
2472 : #endif
2473 : #ifdef POLLRDBAND
2474 1214 : PyModule_AddIntMacro(m, POLLRDBAND);
2475 : #endif
2476 : #ifdef POLLWRNORM
2477 1214 : PyModule_AddIntMacro(m, POLLWRNORM);
2478 : #endif
2479 : #ifdef POLLWRBAND
2480 1214 : PyModule_AddIntMacro(m, POLLWRBAND);
2481 : #endif
2482 : #ifdef POLLMSG
2483 1214 : PyModule_AddIntMacro(m, POLLMSG);
2484 : #endif
2485 : #ifdef POLLRDHUP
2486 : /* Kernel 2.6.17+ */
2487 1214 : PyModule_AddIntMacro(m, POLLRDHUP);
2488 : #endif
2489 : }
2490 : #endif /* HAVE_POLL */
2491 :
2492 : #ifdef HAVE_SYS_DEVPOLL_H
2493 : state->devpoll_Type = (PyTypeObject *)PyType_FromModuleAndSpec(
2494 : m, &devpoll_Type_spec, NULL);
2495 : if (state->devpoll_Type == NULL) {
2496 : return -1;
2497 : }
2498 : #endif
2499 :
2500 : #ifdef HAVE_EPOLL
2501 1214 : state->pyEpoll_Type = (PyTypeObject *)PyType_FromModuleAndSpec(
2502 : m, &pyEpoll_Type_spec, NULL);
2503 1214 : if (state->pyEpoll_Type == NULL) {
2504 0 : return -1;
2505 : }
2506 1214 : if (PyModule_AddType(m, state->pyEpoll_Type) < 0) {
2507 0 : return -1;
2508 : }
2509 :
2510 1214 : PyModule_AddIntMacro(m, EPOLLIN);
2511 1214 : PyModule_AddIntMacro(m, EPOLLOUT);
2512 1214 : PyModule_AddIntMacro(m, EPOLLPRI);
2513 1214 : PyModule_AddIntMacro(m, EPOLLERR);
2514 1214 : PyModule_AddIntMacro(m, EPOLLHUP);
2515 : #ifdef EPOLLRDHUP
2516 : /* Kernel 2.6.17 */
2517 1214 : PyModule_AddIntMacro(m, EPOLLRDHUP);
2518 : #endif
2519 1214 : PyModule_AddIntMacro(m, EPOLLET);
2520 : #ifdef EPOLLONESHOT
2521 : /* Kernel 2.6.2+ */
2522 1214 : PyModule_AddIntMacro(m, EPOLLONESHOT);
2523 : #endif
2524 : #ifdef EPOLLEXCLUSIVE
2525 1214 : PyModule_AddIntMacro(m, EPOLLEXCLUSIVE);
2526 : #endif
2527 :
2528 : #ifdef EPOLLRDNORM
2529 1214 : PyModule_AddIntMacro(m, EPOLLRDNORM);
2530 : #endif
2531 : #ifdef EPOLLRDBAND
2532 1214 : PyModule_AddIntMacro(m, EPOLLRDBAND);
2533 : #endif
2534 : #ifdef EPOLLWRNORM
2535 1214 : PyModule_AddIntMacro(m, EPOLLWRNORM);
2536 : #endif
2537 : #ifdef EPOLLWRBAND
2538 1214 : PyModule_AddIntMacro(m, EPOLLWRBAND);
2539 : #endif
2540 : #ifdef EPOLLMSG
2541 1214 : PyModule_AddIntMacro(m, EPOLLMSG);
2542 : #endif
2543 :
2544 : #ifdef EPOLL_CLOEXEC
2545 1214 : PyModule_AddIntMacro(m, EPOLL_CLOEXEC);
2546 : #endif
2547 : #endif /* HAVE_EPOLL */
2548 :
2549 : #ifdef HAVE_KQUEUE
2550 : state->kqueue_event_Type = (PyTypeObject *)PyType_FromModuleAndSpec(
2551 : m, &kqueue_event_Type_spec, NULL);
2552 : if (state->kqueue_event_Type == NULL) {
2553 : return -1;
2554 : }
2555 : if (PyModule_AddType(m, state->kqueue_event_Type) < 0) {
2556 : return -1;
2557 : }
2558 :
2559 : state->kqueue_queue_Type = (PyTypeObject *)PyType_FromModuleAndSpec(
2560 : m, &kqueue_queue_Type_spec, NULL);
2561 : if (state->kqueue_queue_Type == NULL) {
2562 : return -1;
2563 : }
2564 : if (PyModule_AddType(m, state->kqueue_queue_Type) < 0) {
2565 : return -1;
2566 : }
2567 :
2568 : /* event filters */
2569 : PyModule_AddIntConstant(m, "KQ_FILTER_READ", EVFILT_READ);
2570 : PyModule_AddIntConstant(m, "KQ_FILTER_WRITE", EVFILT_WRITE);
2571 : #ifdef EVFILT_AIO
2572 : PyModule_AddIntConstant(m, "KQ_FILTER_AIO", EVFILT_AIO);
2573 : #endif
2574 : #ifdef EVFILT_VNODE
2575 : PyModule_AddIntConstant(m, "KQ_FILTER_VNODE", EVFILT_VNODE);
2576 : #endif
2577 : #ifdef EVFILT_PROC
2578 : PyModule_AddIntConstant(m, "KQ_FILTER_PROC", EVFILT_PROC);
2579 : #endif
2580 : #ifdef EVFILT_NETDEV
2581 : PyModule_AddIntConstant(m, "KQ_FILTER_NETDEV", EVFILT_NETDEV);
2582 : #endif
2583 : #ifdef EVFILT_SIGNAL
2584 : PyModule_AddIntConstant(m, "KQ_FILTER_SIGNAL", EVFILT_SIGNAL);
2585 : #endif
2586 : PyModule_AddIntConstant(m, "KQ_FILTER_TIMER", EVFILT_TIMER);
2587 :
2588 : /* event flags */
2589 : PyModule_AddIntConstant(m, "KQ_EV_ADD", EV_ADD);
2590 : PyModule_AddIntConstant(m, "KQ_EV_DELETE", EV_DELETE);
2591 : PyModule_AddIntConstant(m, "KQ_EV_ENABLE", EV_ENABLE);
2592 : PyModule_AddIntConstant(m, "KQ_EV_DISABLE", EV_DISABLE);
2593 : PyModule_AddIntConstant(m, "KQ_EV_ONESHOT", EV_ONESHOT);
2594 : PyModule_AddIntConstant(m, "KQ_EV_CLEAR", EV_CLEAR);
2595 :
2596 : #ifdef EV_SYSFLAGS
2597 : PyModule_AddIntConstant(m, "KQ_EV_SYSFLAGS", EV_SYSFLAGS);
2598 : #endif
2599 : #ifdef EV_FLAG1
2600 : PyModule_AddIntConstant(m, "KQ_EV_FLAG1", EV_FLAG1);
2601 : #endif
2602 :
2603 : PyModule_AddIntConstant(m, "KQ_EV_EOF", EV_EOF);
2604 : PyModule_AddIntConstant(m, "KQ_EV_ERROR", EV_ERROR);
2605 :
2606 : /* READ WRITE filter flag */
2607 : #ifdef NOTE_LOWAT
2608 : PyModule_AddIntConstant(m, "KQ_NOTE_LOWAT", NOTE_LOWAT);
2609 : #endif
2610 :
2611 : /* VNODE filter flags */
2612 : #ifdef EVFILT_VNODE
2613 : PyModule_AddIntConstant(m, "KQ_NOTE_DELETE", NOTE_DELETE);
2614 : PyModule_AddIntConstant(m, "KQ_NOTE_WRITE", NOTE_WRITE);
2615 : PyModule_AddIntConstant(m, "KQ_NOTE_EXTEND", NOTE_EXTEND);
2616 : PyModule_AddIntConstant(m, "KQ_NOTE_ATTRIB", NOTE_ATTRIB);
2617 : PyModule_AddIntConstant(m, "KQ_NOTE_LINK", NOTE_LINK);
2618 : PyModule_AddIntConstant(m, "KQ_NOTE_RENAME", NOTE_RENAME);
2619 : PyModule_AddIntConstant(m, "KQ_NOTE_REVOKE", NOTE_REVOKE);
2620 : #endif
2621 :
2622 : /* PROC filter flags */
2623 : #ifdef EVFILT_PROC
2624 : PyModule_AddIntConstant(m, "KQ_NOTE_EXIT", NOTE_EXIT);
2625 : PyModule_AddIntConstant(m, "KQ_NOTE_FORK", NOTE_FORK);
2626 : PyModule_AddIntConstant(m, "KQ_NOTE_EXEC", NOTE_EXEC);
2627 : PyModule_AddIntConstant(m, "KQ_NOTE_PCTRLMASK", NOTE_PCTRLMASK);
2628 : PyModule_AddIntConstant(m, "KQ_NOTE_PDATAMASK", NOTE_PDATAMASK);
2629 :
2630 : PyModule_AddIntConstant(m, "KQ_NOTE_TRACK", NOTE_TRACK);
2631 : PyModule_AddIntConstant(m, "KQ_NOTE_CHILD", NOTE_CHILD);
2632 : PyModule_AddIntConstant(m, "KQ_NOTE_TRACKERR", NOTE_TRACKERR);
2633 : #endif
2634 :
2635 : /* NETDEV filter flags */
2636 : #ifdef EVFILT_NETDEV
2637 : PyModule_AddIntConstant(m, "KQ_NOTE_LINKUP", NOTE_LINKUP);
2638 : PyModule_AddIntConstant(m, "KQ_NOTE_LINKDOWN", NOTE_LINKDOWN);
2639 : PyModule_AddIntConstant(m, "KQ_NOTE_LINKINV", NOTE_LINKINV);
2640 : #endif
2641 :
2642 : #endif /* HAVE_KQUEUE */
2643 1214 : return 0;
2644 : }
2645 :
2646 : static PyModuleDef_Slot _select_slots[] = {
2647 : {Py_mod_exec, _select_exec},
2648 : {0, NULL}
2649 : };
2650 :
2651 : static struct PyModuleDef selectmodule = {
2652 : PyModuleDef_HEAD_INIT,
2653 : .m_name = "select",
2654 : .m_doc = module_doc,
2655 : .m_size = sizeof(_selectstate),
2656 : .m_methods = select_methods,
2657 : .m_slots = _select_slots,
2658 : .m_traverse = _select_traverse,
2659 : .m_clear = _select_clear,
2660 : .m_free = _select_free,
2661 : };
2662 :
2663 : PyMODINIT_FUNC
2664 1214 : PyInit_select(void)
2665 : {
2666 1214 : return PyModuleDef_Init(&selectmodule);
2667 : }
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