Staging
v0.5.1
v0.5.1
Revision dae5d728bc3f1d4039b64e4ec3a9036fd5d19587 authored by Miss Islington (bot) on 10 November 2020, 19:58:27 UTC, committed by GitHub on 10 November 2020, 19:58:27 UTC
Fix an assertion error in format() in debug build for floating point formatting with "n" format, zero padding and small width. Release build is not impacted. Patch by Karthikeyan Singaravelan. (cherry picked from commit 3f7983a25a3d19779283c707fbdd5bc91b1587ef) Co-authored-by: Xtreak <tir.karthi@gmail.com>
1 parent a63234c
selectmodule.c
/* select - Module containing unix select(2) call.
Under Unix, the file descriptors are small integers.
Under Win32, select only exists for sockets, and sockets may
have any value except INVALID_SOCKET.
*/
#if defined(HAVE_POLL_H) && !defined(_GNU_SOURCE)
#define _GNU_SOURCE
#endif
#include "Python.h"
#include <structmember.h>
#ifdef HAVE_SYS_DEVPOLL_H
#include <sys/resource.h>
#include <sys/devpoll.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#endif
#ifdef __APPLE__
/* Perform runtime testing for a broken poll on OSX to make it easier
* to use the same binary on multiple releases of the OS.
*/
#undef HAVE_BROKEN_POLL
#endif
/* Windows #defines FD_SETSIZE to 64 if FD_SETSIZE isn't already defined.
64 is too small (too many people have bumped into that limit).
Here we boost it.
Users who want even more than the boosted limit should #define
FD_SETSIZE higher before this; e.g., via compiler /D switch.
*/
#if defined(MS_WINDOWS) && !defined(FD_SETSIZE)
#define FD_SETSIZE 512
#endif
#if defined(HAVE_POLL_H)
#include <poll.h>
#elif defined(HAVE_SYS_POLL_H)
#include <sys/poll.h>
#endif
#ifdef __sgi
/* This is missing from unistd.h */
extern void bzero(void *, int);
#endif
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef MS_WINDOWS
# define WIN32_LEAN_AND_MEAN
# include <winsock.h>
#else
# define SOCKET int
#endif
/* list of Python objects and their file descriptor */
typedef struct {
PyObject *obj; /* owned reference */
SOCKET fd;
int sentinel; /* -1 == sentinel */
} pylist;
static void
reap_obj(pylist fd2obj[FD_SETSIZE + 1])
{
unsigned int i;
for (i = 0; i < (unsigned int)FD_SETSIZE + 1 && fd2obj[i].sentinel >= 0; i++) {
Py_CLEAR(fd2obj[i].obj);
}
fd2obj[0].sentinel = -1;
}
/* returns -1 and sets the Python exception if an error occurred, otherwise
returns a number >= 0
*/
static int
seq2set(PyObject *seq, fd_set *set, pylist fd2obj[FD_SETSIZE + 1])
{
int max = -1;
unsigned int index = 0;
Py_ssize_t i;
PyObject* fast_seq = NULL;
PyObject* o = NULL;
fd2obj[0].obj = (PyObject*)0; /* set list to zero size */
FD_ZERO(set);
fast_seq = PySequence_Fast(seq, "arguments 1-3 must be sequences");
if (!fast_seq)
return -1;
for (i = 0; i < PySequence_Fast_GET_SIZE(fast_seq); i++) {
SOCKET v;
/* any intervening fileno() calls could decr this refcnt */
if (!(o = PySequence_Fast_GET_ITEM(fast_seq, i)))
goto finally;
Py_INCREF(o);
v = PyObject_AsFileDescriptor( o );
if (v == -1) goto finally;
#if defined(_MSC_VER)
max = 0; /* not used for Win32 */
#else /* !_MSC_VER */
if (!_PyIsSelectable_fd(v)) {
PyErr_SetString(PyExc_ValueError,
"filedescriptor out of range in select()");
goto finally;
}
if (v > max)
max = v;
#endif /* _MSC_VER */
FD_SET(v, set);
/* add object and its file descriptor to the list */
if (index >= (unsigned int)FD_SETSIZE) {
PyErr_SetString(PyExc_ValueError,
"too many file descriptors in select()");
goto finally;
}
fd2obj[index].obj = o;
fd2obj[index].fd = v;
fd2obj[index].sentinel = 0;
fd2obj[++index].sentinel = -1;
}
Py_DECREF(fast_seq);
return max+1;
finally:
Py_XDECREF(o);
Py_DECREF(fast_seq);
return -1;
}
/* returns NULL and sets the Python exception if an error occurred */
static PyObject *
set2list(fd_set *set, pylist fd2obj[FD_SETSIZE + 1])
{
int i, j, count=0;
PyObject *list, *o;
SOCKET fd;
for (j = 0; fd2obj[j].sentinel >= 0; j++) {
if (FD_ISSET(fd2obj[j].fd, set))
count++;
}
list = PyList_New(count);
if (!list)
return NULL;
i = 0;
for (j = 0; fd2obj[j].sentinel >= 0; j++) {
fd = fd2obj[j].fd;
if (FD_ISSET(fd, set)) {
o = fd2obj[j].obj;
fd2obj[j].obj = NULL;
/* transfer ownership */
if (PyList_SetItem(list, i, o) < 0)
goto finally;
i++;
}
}
return list;
finally:
Py_DECREF(list);
return NULL;
}
#undef SELECT_USES_HEAP
#if FD_SETSIZE > 1024
#define SELECT_USES_HEAP
#endif /* FD_SETSIZE > 1024 */
static PyObject *
select_select(PyObject *self, PyObject *args)
{
#ifdef SELECT_USES_HEAP
pylist *rfd2obj, *wfd2obj, *efd2obj;
#else /* !SELECT_USES_HEAP */
/* XXX: All this should probably be implemented as follows:
* - find the highest descriptor we're interested in
* - add one
* - that's the size
* See: Stevens, APitUE, $12.5.1
*/
pylist rfd2obj[FD_SETSIZE + 1];
pylist wfd2obj[FD_SETSIZE + 1];
pylist efd2obj[FD_SETSIZE + 1];
#endif /* SELECT_USES_HEAP */
PyObject *ifdlist, *ofdlist, *efdlist;
PyObject *ret = NULL;
PyObject *timeout_obj = Py_None;
fd_set ifdset, ofdset, efdset;
struct timeval tv, *tvp;
int imax, omax, emax, max;
int n;
_PyTime_t timeout, deadline = 0;
/* convert arguments */
if (!PyArg_UnpackTuple(args, "select", 3, 4,
&ifdlist, &ofdlist, &efdlist, &timeout_obj))
return NULL;
if (timeout_obj == Py_None)
tvp = (struct timeval *)NULL;
else {
if (_PyTime_FromSecondsObject(&timeout, timeout_obj,
_PyTime_ROUND_TIMEOUT) < 0) {
if (PyErr_ExceptionMatches(PyExc_TypeError)) {
PyErr_SetString(PyExc_TypeError,
"timeout must be a float or None");
}
return NULL;
}
if (_PyTime_AsTimeval(timeout, &tv, _PyTime_ROUND_TIMEOUT) == -1)
return NULL;
if (tv.tv_sec < 0) {
PyErr_SetString(PyExc_ValueError, "timeout must be non-negative");
return NULL;
}
tvp = &tv;
}
#ifdef SELECT_USES_HEAP
/* Allocate memory for the lists */
rfd2obj = PyMem_NEW(pylist, FD_SETSIZE + 1);
wfd2obj = PyMem_NEW(pylist, FD_SETSIZE + 1);
efd2obj = PyMem_NEW(pylist, FD_SETSIZE + 1);
if (rfd2obj == NULL || wfd2obj == NULL || efd2obj == NULL) {
if (rfd2obj) PyMem_DEL(rfd2obj);
if (wfd2obj) PyMem_DEL(wfd2obj);
if (efd2obj) PyMem_DEL(efd2obj);
return PyErr_NoMemory();
}
#endif /* SELECT_USES_HEAP */
/* Convert sequences to fd_sets, and get maximum fd number
* propagates the Python exception set in seq2set()
*/
rfd2obj[0].sentinel = -1;
wfd2obj[0].sentinel = -1;
efd2obj[0].sentinel = -1;
if ((imax=seq2set(ifdlist, &ifdset, rfd2obj)) < 0)
goto finally;
if ((omax=seq2set(ofdlist, &ofdset, wfd2obj)) < 0)
goto finally;
if ((emax=seq2set(efdlist, &efdset, efd2obj)) < 0)
goto finally;
max = imax;
if (omax > max) max = omax;
if (emax > max) max = emax;
if (tvp)
deadline = _PyTime_GetMonotonicClock() + timeout;
do {
Py_BEGIN_ALLOW_THREADS
errno = 0;
n = select(max, &ifdset, &ofdset, &efdset, tvp);
Py_END_ALLOW_THREADS
if (errno != EINTR)
break;
/* select() was interrupted by a signal */
if (PyErr_CheckSignals())
goto finally;
if (tvp) {
timeout = deadline - _PyTime_GetMonotonicClock();
if (timeout < 0) {
/* bpo-35310: lists were unmodified -- clear them explicitly */
FD_ZERO(&ifdset);
FD_ZERO(&ofdset);
FD_ZERO(&efdset);
n = 0;
break;
}
_PyTime_AsTimeval_noraise(timeout, &tv, _PyTime_ROUND_CEILING);
/* retry select() with the recomputed timeout */
}
} while (1);
#ifdef MS_WINDOWS
if (n == SOCKET_ERROR) {
PyErr_SetExcFromWindowsErr(PyExc_OSError, WSAGetLastError());
}
#else
if (n < 0) {
PyErr_SetFromErrno(PyExc_OSError);
}
#endif
else {
/* any of these three calls can raise an exception. it's more
convenient to test for this after all three calls... but
is that acceptable?
*/
ifdlist = set2list(&ifdset, rfd2obj);
ofdlist = set2list(&ofdset, wfd2obj);
efdlist = set2list(&efdset, efd2obj);
if (PyErr_Occurred())
ret = NULL;
else
ret = PyTuple_Pack(3, ifdlist, ofdlist, efdlist);
Py_XDECREF(ifdlist);
Py_XDECREF(ofdlist);
Py_XDECREF(efdlist);
}
finally:
reap_obj(rfd2obj);
reap_obj(wfd2obj);
reap_obj(efd2obj);
#ifdef SELECT_USES_HEAP
PyMem_DEL(rfd2obj);
PyMem_DEL(wfd2obj);
PyMem_DEL(efd2obj);
#endif /* SELECT_USES_HEAP */
return ret;
}
#if defined(HAVE_POLL) && !defined(HAVE_BROKEN_POLL)
/*
* poll() support
*/
typedef struct {
PyObject_HEAD
PyObject *dict;
int ufd_uptodate;
int ufd_len;
struct pollfd *ufds;
int poll_running;
} pollObject;
static PyTypeObject poll_Type;
/* Update the malloc'ed array of pollfds to match the dictionary
contained within a pollObject. Return 1 on success, 0 on an error.
*/
static int
update_ufd_array(pollObject *self)
{
Py_ssize_t i, pos;
PyObject *key, *value;
struct pollfd *old_ufds = self->ufds;
self->ufd_len = PyDict_Size(self->dict);
PyMem_RESIZE(self->ufds, struct pollfd, self->ufd_len);
if (self->ufds == NULL) {
self->ufds = old_ufds;
PyErr_NoMemory();
return 0;
}
i = pos = 0;
while (PyDict_Next(self->dict, &pos, &key, &value)) {
assert(i < self->ufd_len);
/* Never overflow */
self->ufds[i].fd = (int)PyLong_AsLong(key);
self->ufds[i].events = (short)(unsigned short)PyLong_AsLong(value);
i++;
}
assert(i == self->ufd_len);
self->ufd_uptodate = 1;
return 1;
}
static int
ushort_converter(PyObject *obj, void *ptr)
{
unsigned long uval;
uval = PyLong_AsUnsignedLong(obj);
if (uval == (unsigned long)-1 && PyErr_Occurred())
return 0;
if (uval > USHRT_MAX) {
PyErr_SetString(PyExc_OverflowError,
"Python int too large for C unsigned short");
return 0;
}
*(unsigned short *)ptr = Py_SAFE_DOWNCAST(uval, unsigned long, unsigned short);
return 1;
}
PyDoc_STRVAR(poll_register_doc,
"register(fd [, eventmask] ) -> None\n\n\
Register a file descriptor with the polling object.\n\
fd -- either an integer, or an object with a fileno() method returning an\n\
int.\n\
events -- an optional bitmask describing the type of events to check for");
static PyObject *
poll_register(pollObject *self, PyObject *args)
{
PyObject *o, *key, *value;
int fd;
unsigned short events = POLLIN | POLLPRI | POLLOUT;
int err;
if (!PyArg_ParseTuple(args, "O|O&:register", &o, ushort_converter, &events))
return NULL;
fd = PyObject_AsFileDescriptor(o);
if (fd == -1) return NULL;
/* Add entry to the internal dictionary: the key is the
file descriptor, and the value is the event mask. */
key = PyLong_FromLong(fd);
if (key == NULL)
return NULL;
value = PyLong_FromLong(events);
if (value == NULL) {
Py_DECREF(key);
return NULL;
}
err = PyDict_SetItem(self->dict, key, value);
Py_DECREF(key);
Py_DECREF(value);
if (err < 0)
return NULL;
self->ufd_uptodate = 0;
Py_INCREF(Py_None);
return Py_None;
}
PyDoc_STRVAR(poll_modify_doc,
"modify(fd, eventmask) -> None\n\n\
Modify an already registered file descriptor.\n\
fd -- either an integer, or an object with a fileno() method returning an\n\
int.\n\
events -- an optional bitmask describing the type of events to check for");
static PyObject *
poll_modify(pollObject *self, PyObject *args)
{
PyObject *o, *key, *value;
int fd;
unsigned short events;
int err;
if (!PyArg_ParseTuple(args, "OO&:modify", &o, ushort_converter, &events))
return NULL;
fd = PyObject_AsFileDescriptor(o);
if (fd == -1) return NULL;
/* Modify registered fd */
key = PyLong_FromLong(fd);
if (key == NULL)
return NULL;
if (PyDict_GetItem(self->dict, key) == NULL) {
errno = ENOENT;
PyErr_SetFromErrno(PyExc_OSError);
Py_DECREF(key);
return NULL;
}
value = PyLong_FromLong(events);
if (value == NULL) {
Py_DECREF(key);
return NULL;
}
err = PyDict_SetItem(self->dict, key, value);
Py_DECREF(key);
Py_DECREF(value);
if (err < 0)
return NULL;
self->ufd_uptodate = 0;
Py_INCREF(Py_None);
return Py_None;
}
PyDoc_STRVAR(poll_unregister_doc,
"unregister(fd) -> None\n\n\
Remove a file descriptor being tracked by the polling object.");
static PyObject *
poll_unregister(pollObject *self, PyObject *o)
{
PyObject *key;
int fd;
fd = PyObject_AsFileDescriptor( o );
if (fd == -1)
return NULL;
/* Check whether the fd is already in the array */
key = PyLong_FromLong(fd);
if (key == NULL)
return NULL;
if (PyDict_DelItem(self->dict, key) == -1) {
Py_DECREF(key);
/* This will simply raise the KeyError set by PyDict_DelItem
if the file descriptor isn't registered. */
return NULL;
}
Py_DECREF(key);
self->ufd_uptodate = 0;
Py_INCREF(Py_None);
return Py_None;
}
PyDoc_STRVAR(poll_poll_doc,
"poll( [timeout] ) -> list of (fd, event) 2-tuples\n\n\
Polls the set of registered file descriptors, returning a list containing \n\
any descriptors that have events or errors to report.");
static PyObject *
poll_poll(pollObject *self, PyObject *args)
{
PyObject *result_list = NULL, *timeout_obj = NULL;
int poll_result, i, j;
PyObject *value = NULL, *num = NULL;
_PyTime_t timeout = -1, ms = -1, deadline = 0;
int async_err = 0;
if (!PyArg_ParseTuple(args, "|O:poll", &timeout_obj)) {
return NULL;
}
if (timeout_obj != NULL && timeout_obj != Py_None) {
if (_PyTime_FromMillisecondsObject(&timeout, timeout_obj,
_PyTime_ROUND_TIMEOUT) < 0) {
if (PyErr_ExceptionMatches(PyExc_TypeError)) {
PyErr_SetString(PyExc_TypeError,
"timeout must be an integer or None");
}
return NULL;
}
ms = _PyTime_AsMilliseconds(timeout, _PyTime_ROUND_TIMEOUT);
if (ms < INT_MIN || ms > INT_MAX) {
PyErr_SetString(PyExc_OverflowError, "timeout is too large");
return NULL;
}
if (timeout >= 0) {
deadline = _PyTime_GetMonotonicClock() + timeout;
}
}
/* On some OSes, typically BSD-based ones, the timeout parameter of the
poll() syscall, when negative, must be exactly INFTIM, where defined,
or -1. See issue 31334. */
if (ms < 0) {
#ifdef INFTIM
ms = INFTIM;
#else
ms = -1;
#endif
}
/* Avoid concurrent poll() invocation, issue 8865 */
if (self->poll_running) {
PyErr_SetString(PyExc_RuntimeError,
"concurrent poll() invocation");
return NULL;
}
/* Ensure the ufd array is up to date */
if (!self->ufd_uptodate)
if (update_ufd_array(self) == 0)
return NULL;
self->poll_running = 1;
/* call poll() */
async_err = 0;
do {
Py_BEGIN_ALLOW_THREADS
errno = 0;
poll_result = poll(self->ufds, self->ufd_len, (int)ms);
Py_END_ALLOW_THREADS
if (errno != EINTR)
break;
/* poll() was interrupted by a signal */
if (PyErr_CheckSignals()) {
async_err = 1;
break;
}
if (timeout >= 0) {
timeout = deadline - _PyTime_GetMonotonicClock();
if (timeout < 0) {
poll_result = 0;
break;
}
ms = _PyTime_AsMilliseconds(timeout, _PyTime_ROUND_CEILING);
/* retry poll() with the recomputed timeout */
}
} while (1);
self->poll_running = 0;
if (poll_result < 0) {
if (!async_err)
PyErr_SetFromErrno(PyExc_OSError);
return NULL;
}
/* build the result list */
result_list = PyList_New(poll_result);
if (!result_list)
return NULL;
for (i = 0, j = 0; j < poll_result; j++) {
/* skip to the next fired descriptor */
while (!self->ufds[i].revents) {
i++;
}
/* if we hit a NULL return, set value to NULL
and break out of loop; code at end will
clean up result_list */
value = PyTuple_New(2);
if (value == NULL)
goto error;
num = PyLong_FromLong(self->ufds[i].fd);
if (num == NULL) {
Py_DECREF(value);
goto error;
}
PyTuple_SET_ITEM(value, 0, num);
/* The &0xffff is a workaround for AIX. 'revents'
is a 16-bit short, and IBM assigned POLLNVAL
to be 0x8000, so the conversion to int results
in a negative number. See SF bug #923315. */
num = PyLong_FromLong(self->ufds[i].revents & 0xffff);
if (num == NULL) {
Py_DECREF(value);
goto error;
}
PyTuple_SET_ITEM(value, 1, num);
PyList_SET_ITEM(result_list, j, value);
i++;
}
return result_list;
error:
Py_DECREF(result_list);
return NULL;
}
static PyMethodDef poll_methods[] = {
{"register", (PyCFunction)poll_register,
METH_VARARGS, poll_register_doc},
{"modify", (PyCFunction)poll_modify,
METH_VARARGS, poll_modify_doc},
{"unregister", (PyCFunction)poll_unregister,
METH_O, poll_unregister_doc},
{"poll", (PyCFunction)poll_poll,
METH_VARARGS, poll_poll_doc},
{NULL, NULL} /* sentinel */
};
static pollObject *
newPollObject(void)
{
pollObject *self;
self = PyObject_New(pollObject, &poll_Type);
if (self == NULL)
return NULL;
/* ufd_uptodate is a Boolean, denoting whether the
array pointed to by ufds matches the contents of the dictionary. */
self->ufd_uptodate = 0;
self->ufds = NULL;
self->poll_running = 0;
self->dict = PyDict_New();
if (self->dict == NULL) {
Py_DECREF(self);
return NULL;
}
return self;
}
static void
poll_dealloc(pollObject *self)
{
if (self->ufds != NULL)
PyMem_DEL(self->ufds);
Py_XDECREF(self->dict);
PyObject_Del(self);
}
static PyTypeObject poll_Type = {
/* The ob_type field must be initialized in the module init function
* to be portable to Windows without using C++. */
PyVarObject_HEAD_INIT(NULL, 0)
"select.poll", /*tp_name*/
sizeof(pollObject), /*tp_basicsize*/
0, /*tp_itemsize*/
/* methods */
(destructor)poll_dealloc, /*tp_dealloc*/
0, /*tp_print*/
0, /*tp_getattr*/
0, /*tp_setattr*/
0, /*tp_reserved*/
0, /*tp_repr*/
0, /*tp_as_number*/
0, /*tp_as_sequence*/
0, /*tp_as_mapping*/
0, /*tp_hash*/
0, /*tp_call*/
0, /*tp_str*/
0, /*tp_getattro*/
0, /*tp_setattro*/
0, /*tp_as_buffer*/
Py_TPFLAGS_DEFAULT, /*tp_flags*/
0, /*tp_doc*/
0, /*tp_traverse*/
0, /*tp_clear*/
0, /*tp_richcompare*/
0, /*tp_weaklistoffset*/
0, /*tp_iter*/
0, /*tp_iternext*/
poll_methods, /*tp_methods*/
};
#ifdef HAVE_SYS_DEVPOLL_H
typedef struct {
PyObject_HEAD
int fd_devpoll;
int max_n_fds;
int n_fds;
struct pollfd *fds;
} devpollObject;
static PyTypeObject devpoll_Type;
static PyObject *
devpoll_err_closed(void)
{
PyErr_SetString(PyExc_ValueError, "I/O operation on closed devpoll object");
return NULL;
}
static int devpoll_flush(devpollObject *self)
{
int size, n;
if (!self->n_fds) return 0;
size = sizeof(struct pollfd)*self->n_fds;
self->n_fds = 0;
n = _Py_write(self->fd_devpoll, self->fds, size);
if (n == -1)
return -1;
if (n < size) {
/*
** Data writed to /dev/poll is a binary data structure. It is not
** clear what to do if a partial write occurred. For now, raise
** an exception and see if we actually found this problem in
** the wild.
** See http://bugs.python.org/issue6397.
*/
PyErr_Format(PyExc_IOError, "failed to write all pollfds. "
"Please, report at http://bugs.python.org/. "
"Data to report: Size tried: %d, actual size written: %d.",
size, n);
return -1;
}
return 0;
}
static PyObject *
internal_devpoll_register(devpollObject *self, PyObject *args, int remove)
{
PyObject *o;
int fd;
unsigned short events = POLLIN | POLLPRI | POLLOUT;
if (self->fd_devpoll < 0)
return devpoll_err_closed();
if (!PyArg_ParseTuple(args, "O|O&:register", &o, ushort_converter, &events))
return NULL;
fd = PyObject_AsFileDescriptor(o);
if (fd == -1) return NULL;
if (remove) {
self->fds[self->n_fds].fd = fd;
self->fds[self->n_fds].events = POLLREMOVE;
if (++self->n_fds == self->max_n_fds) {
if (devpoll_flush(self))
return NULL;
}
}
self->fds[self->n_fds].fd = fd;
self->fds[self->n_fds].events = (signed short)events;
if (++self->n_fds == self->max_n_fds) {
if (devpoll_flush(self))
return NULL;
}
Py_RETURN_NONE;
}
PyDoc_STRVAR(devpoll_register_doc,
"register(fd [, eventmask] ) -> None\n\n\
Register a file descriptor with the polling object.\n\
fd -- either an integer, or an object with a fileno() method returning an\n\
int.\n\
events -- an optional bitmask describing the type of events to check for");
static PyObject *
devpoll_register(devpollObject *self, PyObject *args)
{
return internal_devpoll_register(self, args, 0);
}
PyDoc_STRVAR(devpoll_modify_doc,
"modify(fd[, eventmask]) -> None\n\n\
Modify a possible already registered file descriptor.\n\
fd -- either an integer, or an object with a fileno() method returning an\n\
int.\n\
events -- an optional bitmask describing the type of events to check for");
static PyObject *
devpoll_modify(devpollObject *self, PyObject *args)
{
return internal_devpoll_register(self, args, 1);
}
PyDoc_STRVAR(devpoll_unregister_doc,
"unregister(fd) -> None\n\n\
Remove a file descriptor being tracked by the polling object.");
static PyObject *
devpoll_unregister(devpollObject *self, PyObject *o)
{
int fd;
if (self->fd_devpoll < 0)
return devpoll_err_closed();
fd = PyObject_AsFileDescriptor( o );
if (fd == -1)
return NULL;
self->fds[self->n_fds].fd = fd;
self->fds[self->n_fds].events = POLLREMOVE;
if (++self->n_fds == self->max_n_fds) {
if (devpoll_flush(self))
return NULL;
}
Py_RETURN_NONE;
}
PyDoc_STRVAR(devpoll_poll_doc,
"poll( [timeout] ) -> list of (fd, event) 2-tuples\n\n\
Polls the set of registered file descriptors, returning a list containing \n\
any descriptors that have events or errors to report.");
static PyObject *
devpoll_poll(devpollObject *self, PyObject *args)
{
struct dvpoll dvp;
PyObject *result_list = NULL, *timeout_obj = NULL;
int poll_result, i;
PyObject *value, *num1, *num2;
_PyTime_t timeout, ms, deadline = 0;
if (self->fd_devpoll < 0)
return devpoll_err_closed();
if (!PyArg_ParseTuple(args, "|O:poll", &timeout_obj)) {
return NULL;
}
/* Check values for timeout */
if (timeout_obj == NULL || timeout_obj == Py_None) {
timeout = -1;
ms = -1;
}
else {
if (_PyTime_FromMillisecondsObject(&timeout, timeout_obj,
_PyTime_ROUND_TIMEOUT) < 0) {
if (PyErr_ExceptionMatches(PyExc_TypeError)) {
PyErr_SetString(PyExc_TypeError,
"timeout must be an integer or None");
}
return NULL;
}
ms = _PyTime_AsMilliseconds(timeout, _PyTime_ROUND_TIMEOUT);
if (ms < -1 || ms > INT_MAX) {
PyErr_SetString(PyExc_OverflowError, "timeout is too large");
return NULL;
}
}
if (devpoll_flush(self))
return NULL;
dvp.dp_fds = self->fds;
dvp.dp_nfds = self->max_n_fds;
dvp.dp_timeout = (int)ms;
if (timeout >= 0)
deadline = _PyTime_GetMonotonicClock() + timeout;
do {
/* call devpoll() */
Py_BEGIN_ALLOW_THREADS
errno = 0;
poll_result = ioctl(self->fd_devpoll, DP_POLL, &dvp);
Py_END_ALLOW_THREADS
if (errno != EINTR)
break;
/* devpoll() was interrupted by a signal */
if (PyErr_CheckSignals())
return NULL;
if (timeout >= 0) {
timeout = deadline - _PyTime_GetMonotonicClock();
if (timeout < 0) {
poll_result = 0;
break;
}
ms = _PyTime_AsMilliseconds(timeout, _PyTime_ROUND_CEILING);
dvp.dp_timeout = (int)ms;
/* retry devpoll() with the recomputed timeout */
}
} while (1);
if (poll_result < 0) {
PyErr_SetFromErrno(PyExc_IOError);
return NULL;
}
/* build the result list */
result_list = PyList_New(poll_result);
if (!result_list)
return NULL;
for (i = 0; i < poll_result; i++) {
num1 = PyLong_FromLong(self->fds[i].fd);
num2 = PyLong_FromLong(self->fds[i].revents);
if ((num1 == NULL) || (num2 == NULL)) {
Py_XDECREF(num1);
Py_XDECREF(num2);
goto error;
}
value = PyTuple_Pack(2, num1, num2);
Py_DECREF(num1);
Py_DECREF(num2);
if (value == NULL)
goto error;
PyList_SET_ITEM(result_list, i, value);
}
return result_list;
error:
Py_DECREF(result_list);
return NULL;
}
static int
devpoll_internal_close(devpollObject *self)
{
int save_errno = 0;
if (self->fd_devpoll >= 0) {
int fd = self->fd_devpoll;
self->fd_devpoll = -1;
Py_BEGIN_ALLOW_THREADS
if (close(fd) < 0)
save_errno = errno;
Py_END_ALLOW_THREADS
}
return save_errno;
}
static PyObject*
devpoll_close(devpollObject *self)
{
errno = devpoll_internal_close(self);
if (errno < 0) {
PyErr_SetFromErrno(PyExc_OSError);
return NULL;
}
Py_RETURN_NONE;
}
PyDoc_STRVAR(devpoll_close_doc,
"close() -> None\n\
\n\
Close the devpoll file descriptor. Further operations on the devpoll\n\
object will raise an exception.");
static PyObject*
devpoll_get_closed(devpollObject *self, void *Py_UNUSED(ignored))
{
if (self->fd_devpoll < 0)
Py_RETURN_TRUE;
else
Py_RETURN_FALSE;
}
static PyObject*
devpoll_fileno(devpollObject *self)
{
if (self->fd_devpoll < 0)
return devpoll_err_closed();
return PyLong_FromLong(self->fd_devpoll);
}
PyDoc_STRVAR(devpoll_fileno_doc,
"fileno() -> int\n\
\n\
Return the file descriptor.");
static PyMethodDef devpoll_methods[] = {
{"register", (PyCFunction)devpoll_register,
METH_VARARGS, devpoll_register_doc},
{"modify", (PyCFunction)devpoll_modify,
METH_VARARGS, devpoll_modify_doc},
{"unregister", (PyCFunction)devpoll_unregister,
METH_O, devpoll_unregister_doc},
{"poll", (PyCFunction)devpoll_poll,
METH_VARARGS, devpoll_poll_doc},
{"close", (PyCFunction)devpoll_close, METH_NOARGS,
devpoll_close_doc},
{"fileno", (PyCFunction)devpoll_fileno, METH_NOARGS,
devpoll_fileno_doc},
{NULL, NULL} /* sentinel */
};
static PyGetSetDef devpoll_getsetlist[] = {
{"closed", (getter)devpoll_get_closed, NULL,
"True if the devpoll object is closed"},
{0},
};
static devpollObject *
newDevPollObject(void)
{
devpollObject *self;
int fd_devpoll, limit_result;
struct pollfd *fds;
struct rlimit limit;
/*
** If we try to process more that getrlimit()
** fds, the kernel will give an error, so
** we set the limit here. It is a dynamic
** value, because we can change rlimit() anytime.
*/
limit_result = getrlimit(RLIMIT_NOFILE, &limit);
if (limit_result == -1) {
PyErr_SetFromErrno(PyExc_OSError);
return NULL;
}
fd_devpoll = _Py_open("/dev/poll", O_RDWR);
if (fd_devpoll == -1)
return NULL;
fds = PyMem_NEW(struct pollfd, limit.rlim_cur);
if (fds == NULL) {
close(fd_devpoll);
PyErr_NoMemory();
return NULL;
}
self = PyObject_New(devpollObject, &devpoll_Type);
if (self == NULL) {
close(fd_devpoll);
PyMem_DEL(fds);
return NULL;
}
self->fd_devpoll = fd_devpoll;
self->max_n_fds = limit.rlim_cur;
self->n_fds = 0;
self->fds = fds;
return self;
}
static void
devpoll_dealloc(devpollObject *self)
{
(void)devpoll_internal_close(self);
PyMem_DEL(self->fds);
PyObject_Del(self);
}
static PyTypeObject devpoll_Type = {
/* The ob_type field must be initialized in the module init function
* to be portable to Windows without using C++. */
PyVarObject_HEAD_INIT(NULL, 0)
"select.devpoll", /*tp_name*/
sizeof(devpollObject), /*tp_basicsize*/
0, /*tp_itemsize*/
/* methods */
(destructor)devpoll_dealloc, /*tp_dealloc*/
0, /*tp_print*/
0, /*tp_getattr*/
0, /*tp_setattr*/
0, /*tp_reserved*/
0, /*tp_repr*/
0, /*tp_as_number*/
0, /*tp_as_sequence*/
0, /*tp_as_mapping*/
0, /*tp_hash*/
0, /*tp_call*/
0, /*tp_str*/
0, /*tp_getattro*/
0, /*tp_setattro*/
0, /*tp_as_buffer*/
Py_TPFLAGS_DEFAULT, /*tp_flags*/
0, /*tp_doc*/
0, /*tp_traverse*/
0, /*tp_clear*/
0, /*tp_richcompare*/
0, /*tp_weaklistoffset*/
0, /*tp_iter*/
0, /*tp_iternext*/
devpoll_methods, /*tp_methods*/
0, /* tp_members */
devpoll_getsetlist, /* tp_getset */
};
#endif /* HAVE_SYS_DEVPOLL_H */
PyDoc_STRVAR(poll_doc,
"Returns a polling object, which supports registering and\n\
unregistering file descriptors, and then polling them for I/O events.");
static PyObject *
select_poll(PyObject *self, PyObject *unused)
{
return (PyObject *)newPollObject();
}
#ifdef HAVE_SYS_DEVPOLL_H
PyDoc_STRVAR(devpoll_doc,
"Returns a polling object, which supports registering and\n\
unregistering file descriptors, and then polling them for I/O events.");
static PyObject *
select_devpoll(PyObject *self, PyObject *unused)
{
return (PyObject *)newDevPollObject();
}
#endif
#ifdef __APPLE__
/*
* On some systems poll() sets errno on invalid file descriptors. We test
* for this at runtime because this bug may be fixed or introduced between
* OS releases.
*/
static int select_have_broken_poll(void)
{
int poll_test;
int filedes[2];
struct pollfd poll_struct = { 0, POLLIN|POLLPRI|POLLOUT, 0 };
/* Create a file descriptor to make invalid */
if (pipe(filedes) < 0) {
return 1;
}
poll_struct.fd = filedes[0];
close(filedes[0]);
close(filedes[1]);
poll_test = poll(&poll_struct, 1, 0);
if (poll_test < 0) {
return 1;
} else if (poll_test == 0 && poll_struct.revents != POLLNVAL) {
return 1;
}
return 0;
}
#endif /* __APPLE__ */
#endif /* HAVE_POLL */
#ifdef HAVE_EPOLL
/* **************************************************************************
* epoll interface for Linux 2.6
*
* Written by Christian Heimes
* Inspired by Twisted's _epoll.pyx and select.poll()
*/
#ifdef HAVE_SYS_EPOLL_H
#include <sys/epoll.h>
#endif
typedef struct {
PyObject_HEAD
SOCKET epfd; /* epoll control file descriptor */
} pyEpoll_Object;
static PyTypeObject pyEpoll_Type;
#define pyepoll_CHECK(op) (PyObject_TypeCheck((op), &pyEpoll_Type))
static PyObject *
pyepoll_err_closed(void)
{
PyErr_SetString(PyExc_ValueError, "I/O operation on closed epoll object");
return NULL;
}
static int
pyepoll_internal_close(pyEpoll_Object *self)
{
int save_errno = 0;
if (self->epfd >= 0) {
int epfd = self->epfd;
self->epfd = -1;
Py_BEGIN_ALLOW_THREADS
if (close(epfd) < 0)
save_errno = errno;
Py_END_ALLOW_THREADS
}
return save_errno;
}
static PyObject *
newPyEpoll_Object(PyTypeObject *type, int sizehint, int flags, SOCKET fd)
{
pyEpoll_Object *self;
assert(type != NULL && type->tp_alloc != NULL);
self = (pyEpoll_Object *) type->tp_alloc(type, 0);
if (self == NULL)
return NULL;
if (fd == -1) {
Py_BEGIN_ALLOW_THREADS
#ifdef HAVE_EPOLL_CREATE1
flags |= EPOLL_CLOEXEC;
if (flags)
self->epfd = epoll_create1(flags);
else
#endif
self->epfd = epoll_create(sizehint);
Py_END_ALLOW_THREADS
}
else {
self->epfd = fd;
}
if (self->epfd < 0) {
Py_DECREF(self);
PyErr_SetFromErrno(PyExc_OSError);
return NULL;
}
#ifndef HAVE_EPOLL_CREATE1
if (fd == -1 && _Py_set_inheritable(self->epfd, 0, NULL) < 0) {
Py_DECREF(self);
return NULL;
}
#endif
return (PyObject *)self;
}
static PyObject *
pyepoll_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
{
int flags = 0, sizehint = -1;
static char *kwlist[] = {"sizehint", "flags", NULL};
if (!PyArg_ParseTupleAndKeywords(args, kwds, "|ii:epoll", kwlist,
&sizehint, &flags))
return NULL;
if (sizehint == -1) {
sizehint = FD_SETSIZE - 1;
}
else if (sizehint <= 0) {
PyErr_SetString(PyExc_ValueError, "sizehint must be positive or -1");
return NULL;
}
return newPyEpoll_Object(type, sizehint, flags, -1);
}
static void
pyepoll_dealloc(pyEpoll_Object *self)
{
(void)pyepoll_internal_close(self);
Py_TYPE(self)->tp_free(self);
}
static PyObject*
pyepoll_close(pyEpoll_Object *self)
{
errno = pyepoll_internal_close(self);
if (errno < 0) {
PyErr_SetFromErrno(PyExc_OSError);
return NULL;
}
Py_RETURN_NONE;
}
PyDoc_STRVAR(pyepoll_close_doc,
"close() -> None\n\
\n\
Close the epoll control file descriptor. Further operations on the epoll\n\
object will raise an exception.");
static PyObject*
pyepoll_get_closed(pyEpoll_Object *self, void *Py_UNUSED(ignored))
{
if (self->epfd < 0)
Py_RETURN_TRUE;
else
Py_RETURN_FALSE;
}
static PyObject*
pyepoll_fileno(pyEpoll_Object *self)
{
if (self->epfd < 0)
return pyepoll_err_closed();
return PyLong_FromLong(self->epfd);
}
PyDoc_STRVAR(pyepoll_fileno_doc,
"fileno() -> int\n\
\n\
Return the epoll control file descriptor.");
static PyObject*
pyepoll_fromfd(PyObject *cls, PyObject *args)
{
SOCKET fd;
if (!PyArg_ParseTuple(args, "i:fromfd", &fd))
return NULL;
return newPyEpoll_Object((PyTypeObject*)cls, FD_SETSIZE - 1, 0, fd);
}
PyDoc_STRVAR(pyepoll_fromfd_doc,
"fromfd(fd) -> epoll\n\
\n\
Create an epoll object from a given control fd.");
static PyObject *
pyepoll_internal_ctl(int epfd, int op, PyObject *pfd, unsigned int events)
{
struct epoll_event ev;
int result;
int fd;
if (epfd < 0)
return pyepoll_err_closed();
fd = PyObject_AsFileDescriptor(pfd);
if (fd == -1) {
return NULL;
}
switch (op) {
case EPOLL_CTL_ADD:
case EPOLL_CTL_MOD:
ev.events = events;
ev.data.fd = fd;
Py_BEGIN_ALLOW_THREADS
result = epoll_ctl(epfd, op, fd, &ev);
Py_END_ALLOW_THREADS
break;
case EPOLL_CTL_DEL:
/* In kernel versions before 2.6.9, the EPOLL_CTL_DEL
* operation required a non-NULL pointer in event, even
* though this argument is ignored. */
Py_BEGIN_ALLOW_THREADS
result = epoll_ctl(epfd, op, fd, &ev);
if (errno == EBADF) {
/* fd already closed */
result = 0;
errno = 0;
}
Py_END_ALLOW_THREADS
break;
default:
result = -1;
errno = EINVAL;
}
if (result < 0) {
PyErr_SetFromErrno(PyExc_OSError);
return NULL;
}
Py_RETURN_NONE;
}
static PyObject *
pyepoll_register(pyEpoll_Object *self, PyObject *args, PyObject *kwds)
{
PyObject *pfd;
unsigned int events = EPOLLIN | EPOLLOUT | EPOLLPRI;
static char *kwlist[] = {"fd", "eventmask", NULL};
if (!PyArg_ParseTupleAndKeywords(args, kwds, "O|I:register", kwlist,
&pfd, &events)) {
return NULL;
}
return pyepoll_internal_ctl(self->epfd, EPOLL_CTL_ADD, pfd, events);
}
PyDoc_STRVAR(pyepoll_register_doc,
"register(fd[, eventmask]) -> None\n\
\n\
Registers a new fd or raises an OSError if the fd is already registered.\n\
fd is the target file descriptor of the operation.\n\
events is a bit set composed of the various EPOLL constants; the default\n\
is EPOLLIN | EPOLLOUT | EPOLLPRI.\n\
\n\
The epoll interface supports all file descriptors that support poll.");
static PyObject *
pyepoll_modify(pyEpoll_Object *self, PyObject *args, PyObject *kwds)
{
PyObject *pfd;
unsigned int events;
static char *kwlist[] = {"fd", "eventmask", NULL};
if (!PyArg_ParseTupleAndKeywords(args, kwds, "OI:modify", kwlist,
&pfd, &events)) {
return NULL;
}
return pyepoll_internal_ctl(self->epfd, EPOLL_CTL_MOD, pfd, events);
}
PyDoc_STRVAR(pyepoll_modify_doc,
"modify(fd, eventmask) -> None\n\
\n\
fd is the target file descriptor of the operation\n\
events is a bit set composed of the various EPOLL constants");
static PyObject *
pyepoll_unregister(pyEpoll_Object *self, PyObject *args, PyObject *kwds)
{
PyObject *pfd;
static char *kwlist[] = {"fd", NULL};
if (!PyArg_ParseTupleAndKeywords(args, kwds, "O:unregister", kwlist,
&pfd)) {
return NULL;
}
return pyepoll_internal_ctl(self->epfd, EPOLL_CTL_DEL, pfd, 0);
}
PyDoc_STRVAR(pyepoll_unregister_doc,
"unregister(fd) -> None\n\
\n\
fd is the target file descriptor of the operation.");
static PyObject *
pyepoll_poll(pyEpoll_Object *self, PyObject *args, PyObject *kwds)
{
static char *kwlist[] = {"timeout", "maxevents", NULL};
PyObject *timeout_obj = NULL;
int maxevents = -1;
int nfds, i;
PyObject *elist = NULL, *etuple = NULL;
struct epoll_event *evs = NULL;
_PyTime_t timeout, ms, deadline;
if (self->epfd < 0)
return pyepoll_err_closed();
if (!PyArg_ParseTupleAndKeywords(args, kwds, "|Oi:poll", kwlist,
&timeout_obj, &maxevents)) {
return NULL;
}
if (timeout_obj == NULL || timeout_obj == Py_None) {
timeout = -1;
ms = -1;
deadline = 0; /* initialize to prevent gcc warning */
}
else {
/* epoll_wait() has a resolution of 1 millisecond, round towards
infinity to wait at least timeout seconds. */
if (_PyTime_FromSecondsObject(&timeout, timeout_obj,
_PyTime_ROUND_TIMEOUT) < 0) {
if (PyErr_ExceptionMatches(PyExc_TypeError)) {
PyErr_SetString(PyExc_TypeError,
"timeout must be an integer or None");
}
return NULL;
}
ms = _PyTime_AsMilliseconds(timeout, _PyTime_ROUND_CEILING);
if (ms < INT_MIN || ms > INT_MAX) {
PyErr_SetString(PyExc_OverflowError, "timeout is too large");
return NULL;
}
deadline = _PyTime_GetMonotonicClock() + timeout;
}
if (maxevents == -1) {
maxevents = FD_SETSIZE-1;
}
else if (maxevents < 1) {
PyErr_Format(PyExc_ValueError,
"maxevents must be greater than 0, got %d",
maxevents);
return NULL;
}
evs = PyMem_New(struct epoll_event, maxevents);
if (evs == NULL) {
PyErr_NoMemory();
return NULL;
}
do {
Py_BEGIN_ALLOW_THREADS
errno = 0;
nfds = epoll_wait(self->epfd, evs, maxevents, (int)ms);
Py_END_ALLOW_THREADS
if (errno != EINTR)
break;
/* poll() was interrupted by a signal */
if (PyErr_CheckSignals())
goto error;
if (timeout >= 0) {
timeout = deadline - _PyTime_GetMonotonicClock();
if (timeout < 0) {
nfds = 0;
break;
}
ms = _PyTime_AsMilliseconds(timeout, _PyTime_ROUND_CEILING);
/* retry epoll_wait() with the recomputed timeout */
}
} while(1);
if (nfds < 0) {
PyErr_SetFromErrno(PyExc_OSError);
goto error;
}
elist = PyList_New(nfds);
if (elist == NULL) {
goto error;
}
for (i = 0; i < nfds; i++) {
etuple = Py_BuildValue("iI", evs[i].data.fd, evs[i].events);
if (etuple == NULL) {
Py_CLEAR(elist);
goto error;
}
PyList_SET_ITEM(elist, i, etuple);
}
error:
PyMem_Free(evs);
return elist;
}
PyDoc_STRVAR(pyepoll_poll_doc,
"poll([timeout=-1[, maxevents=-1]]) -> [(fd, events), (...)]\n\
\n\
Wait for events on the epoll file descriptor for a maximum time of timeout\n\
in seconds (as float). -1 makes poll wait indefinitely.\n\
Up to maxevents are returned to the caller.");
static PyObject *
pyepoll_enter(pyEpoll_Object *self, PyObject *args)
{
if (self->epfd < 0)
return pyepoll_err_closed();
Py_INCREF(self);
return (PyObject *)self;
}
static PyObject *
pyepoll_exit(PyObject *self, PyObject *args)
{
_Py_IDENTIFIER(close);
return _PyObject_CallMethodId(self, &PyId_close, NULL);
}
static PyMethodDef pyepoll_methods[] = {
{"fromfd", (PyCFunction)pyepoll_fromfd,
METH_VARARGS | METH_CLASS, pyepoll_fromfd_doc},
{"close", (PyCFunction)pyepoll_close, METH_NOARGS,
pyepoll_close_doc},
{"fileno", (PyCFunction)pyepoll_fileno, METH_NOARGS,
pyepoll_fileno_doc},
{"modify", (PyCFunction)pyepoll_modify,
METH_VARARGS | METH_KEYWORDS, pyepoll_modify_doc},
{"register", (PyCFunction)pyepoll_register,
METH_VARARGS | METH_KEYWORDS, pyepoll_register_doc},
{"unregister", (PyCFunction)pyepoll_unregister,
METH_VARARGS | METH_KEYWORDS, pyepoll_unregister_doc},
{"poll", (PyCFunction)pyepoll_poll,
METH_VARARGS | METH_KEYWORDS, pyepoll_poll_doc},
{"__enter__", (PyCFunction)pyepoll_enter, METH_NOARGS,
NULL},
{"__exit__", (PyCFunction)pyepoll_exit, METH_VARARGS,
NULL},
{NULL, NULL},
};
static PyGetSetDef pyepoll_getsetlist[] = {
{"closed", (getter)pyepoll_get_closed, NULL,
"True if the epoll handler is closed"},
{0},
};
PyDoc_STRVAR(pyepoll_doc,
"select.epoll(sizehint=-1, flags=0)\n\
\n\
Returns an epolling object\n\
\n\
sizehint must be a positive integer or -1 for the default size. The\n\
sizehint is used to optimize internal data structures. It doesn't limit\n\
the maximum number of monitored events.");
static PyTypeObject pyEpoll_Type = {
PyVarObject_HEAD_INIT(NULL, 0)
"select.epoll", /* tp_name */
sizeof(pyEpoll_Object), /* tp_basicsize */
0, /* tp_itemsize */
(destructor)pyepoll_dealloc, /* tp_dealloc */
0, /* tp_print */
0, /* tp_getattr */
0, /* tp_setattr */
0, /* tp_reserved */
0, /* tp_repr */
0, /* tp_as_number */
0, /* tp_as_sequence */
0, /* tp_as_mapping */
0, /* tp_hash */
0, /* tp_call */
0, /* tp_str */
PyObject_GenericGetAttr, /* tp_getattro */
0, /* tp_setattro */
0, /* tp_as_buffer */
Py_TPFLAGS_DEFAULT, /* tp_flags */
pyepoll_doc, /* tp_doc */
0, /* tp_traverse */
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
0, /* tp_iter */
0, /* tp_iternext */
pyepoll_methods, /* tp_methods */
0, /* tp_members */
pyepoll_getsetlist, /* tp_getset */
0, /* tp_base */
0, /* tp_dict */
0, /* tp_descr_get */
0, /* tp_descr_set */
0, /* tp_dictoffset */
0, /* tp_init */
0, /* tp_alloc */
pyepoll_new, /* tp_new */
0, /* tp_free */
};
#endif /* HAVE_EPOLL */
#ifdef HAVE_KQUEUE
/* **************************************************************************
* kqueue interface for BSD
*
* Copyright (c) 2000 Doug White, 2006 James Knight, 2007 Christian Heimes
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifdef HAVE_SYS_EVENT_H
#include <sys/event.h>
#endif
PyDoc_STRVAR(kqueue_event_doc,
"kevent(ident, filter=KQ_FILTER_READ, flags=KQ_EV_ADD, fflags=0, data=0, udata=0)\n\
\n\
This object is the equivalent of the struct kevent for the C API.\n\
\n\
See the kqueue manpage for more detailed information about the meaning\n\
of the arguments.\n\
\n\
One minor note: while you might hope that udata could store a\n\
reference to a python object, it cannot, because it is impossible to\n\
keep a proper reference count of the object once it's passed into the\n\
kernel. Therefore, I have restricted it to only storing an integer. I\n\
recommend ignoring it and simply using the 'ident' field to key off\n\
of. You could also set up a dictionary on the python side to store a\n\
udata->object mapping.");
typedef struct {
PyObject_HEAD
struct kevent e;
} kqueue_event_Object;
static PyTypeObject kqueue_event_Type;
#define kqueue_event_Check(op) (PyObject_TypeCheck((op), &kqueue_event_Type))
typedef struct {
PyObject_HEAD
SOCKET kqfd; /* kqueue control fd */
} kqueue_queue_Object;
static PyTypeObject kqueue_queue_Type;
#define kqueue_queue_Check(op) (PyObject_TypeCheck((op), &kqueue_queue_Type))
#if (SIZEOF_UINTPTR_T != SIZEOF_VOID_P)
# error uintptr_t does not match void *!
#elif (SIZEOF_UINTPTR_T == SIZEOF_LONG_LONG)
# define T_UINTPTRT T_ULONGLONG
# define T_INTPTRT T_LONGLONG
# define UINTPTRT_FMT_UNIT "K"
# define INTPTRT_FMT_UNIT "L"
#elif (SIZEOF_UINTPTR_T == SIZEOF_LONG)
# define T_UINTPTRT T_ULONG
# define T_INTPTRT T_LONG
# define UINTPTRT_FMT_UNIT "k"
# define INTPTRT_FMT_UNIT "l"
#elif (SIZEOF_UINTPTR_T == SIZEOF_INT)
# define T_UINTPTRT T_UINT
# define T_INTPTRT T_INT
# define UINTPTRT_FMT_UNIT "I"
# define INTPTRT_FMT_UNIT "i"
#else
# error uintptr_t does not match int, long, or long long!
#endif
#if SIZEOF_LONG_LONG == 8
# define T_INT64 T_LONGLONG
# define INT64_FMT_UNIT "L"
#elif SIZEOF_LONG == 8
# define T_INT64 T_LONG
# define INT64_FMT_UNIT "l"
#elif SIZEOF_INT == 8
# define T_INT64 T_INT
# define INT64_FMT_UNIT "i"
#else
# define INT64_FMT_UNIT "_"
#endif
#if SIZEOF_LONG_LONG == 4
# define T_UINT32 T_ULONGLONG
# define UINT32_FMT_UNIT "K"
#elif SIZEOF_LONG == 4
# define T_UINT32 T_ULONG
# define UINT32_FMT_UNIT "k"
#elif SIZEOF_INT == 4
# define T_UINT32 T_UINT
# define UINT32_FMT_UNIT "I"
#else
# define UINT32_FMT_UNIT "_"
#endif
/*
* kevent is not standard and its members vary across BSDs.
*/
#ifdef __NetBSD__
# define FILTER_TYPE T_UINT32
# define FILTER_FMT_UNIT UINT32_FMT_UNIT
# define FLAGS_TYPE T_UINT32
# define FLAGS_FMT_UNIT UINT32_FMT_UNIT
# define FFLAGS_TYPE T_UINT32
# define FFLAGS_FMT_UNIT UINT32_FMT_UNIT
#else
# define FILTER_TYPE T_SHORT
# define FILTER_FMT_UNIT "h"
# define FLAGS_TYPE T_USHORT
# define FLAGS_FMT_UNIT "H"
# define FFLAGS_TYPE T_UINT
# define FFLAGS_FMT_UNIT "I"
#endif
#if defined(__NetBSD__) || defined(__OpenBSD__)
# define DATA_TYPE T_INT64
# define DATA_FMT_UNIT INT64_FMT_UNIT
#else
# define DATA_TYPE T_INTPTRT
# define DATA_FMT_UNIT INTPTRT_FMT_UNIT
#endif
/* Unfortunately, we can't store python objects in udata, because
* kevents in the kernel can be removed without warning, which would
* forever lose the refcount on the object stored with it.
*/
#define KQ_OFF(x) offsetof(kqueue_event_Object, x)
static struct PyMemberDef kqueue_event_members[] = {
{"ident", T_UINTPTRT, KQ_OFF(e.ident)},
{"filter", FILTER_TYPE, KQ_OFF(e.filter)},
{"flags", FLAGS_TYPE, KQ_OFF(e.flags)},
{"fflags", T_UINT, KQ_OFF(e.fflags)},
{"data", DATA_TYPE, KQ_OFF(e.data)},
{"udata", T_UINTPTRT, KQ_OFF(e.udata)},
{NULL} /* Sentinel */
};
#undef KQ_OFF
static PyObject *
kqueue_event_repr(kqueue_event_Object *s)
{
char buf[1024];
PyOS_snprintf(
buf, sizeof(buf),
"<select.kevent ident=%zu filter=%d flags=0x%x fflags=0x%x "
"data=0x%llx udata=%p>",
(size_t)(s->e.ident), (int)s->e.filter, (unsigned int)s->e.flags,
(unsigned int)s->e.fflags, (long long)(s->e.data), (void *)s->e.udata);
return PyUnicode_FromString(buf);
}
static int
kqueue_event_init(kqueue_event_Object *self, PyObject *args, PyObject *kwds)
{
PyObject *pfd;
static char *kwlist[] = {"ident", "filter", "flags", "fflags",
"data", "udata", NULL};
static const char fmt[] = "O|"
FILTER_FMT_UNIT FLAGS_FMT_UNIT FFLAGS_FMT_UNIT DATA_FMT_UNIT
UINTPTRT_FMT_UNIT ":kevent";
EV_SET(&(self->e), 0, EVFILT_READ, EV_ADD, 0, 0, 0); /* defaults */
if (!PyArg_ParseTupleAndKeywords(args, kwds, fmt, kwlist,
&pfd, &(self->e.filter), &(self->e.flags),
&(self->e.fflags), &(self->e.data), &(self->e.udata))) {
return -1;
}
if (PyLong_Check(pfd)) {
self->e.ident = PyLong_AsSize_t(pfd);
}
else {
self->e.ident = PyObject_AsFileDescriptor(pfd);
}
if (PyErr_Occurred()) {
return -1;
}
return 0;
}
static PyObject *
kqueue_event_richcompare(kqueue_event_Object *s, kqueue_event_Object *o,
int op)
{
int result;
if (!kqueue_event_Check(o)) {
Py_RETURN_NOTIMPLEMENTED;
}
#define CMP(a, b) ((a) != (b)) ? ((a) < (b) ? -1 : 1)
result = CMP(s->e.ident, o->e.ident)
: CMP(s->e.filter, o->e.filter)
: CMP(s->e.flags, o->e.flags)
: CMP(s->e.fflags, o->e.fflags)
: CMP(s->e.data, o->e.data)
: CMP((intptr_t)s->e.udata, (intptr_t)o->e.udata)
: 0;
#undef CMP
switch (op) {
case Py_EQ:
result = (result == 0);
break;
case Py_NE:
result = (result != 0);
break;
case Py_LE:
result = (result <= 0);
break;
case Py_GE:
result = (result >= 0);
break;
case Py_LT:
result = (result < 0);
break;
case Py_GT:
result = (result > 0);
break;
}
return PyBool_FromLong((long)result);
}
static PyTypeObject kqueue_event_Type = {
PyVarObject_HEAD_INIT(NULL, 0)
"select.kevent", /* tp_name */
sizeof(kqueue_event_Object), /* tp_basicsize */
0, /* tp_itemsize */
0, /* tp_dealloc */
0, /* tp_print */
0, /* tp_getattr */
0, /* tp_setattr */
0, /* tp_reserved */
(reprfunc)kqueue_event_repr, /* tp_repr */
0, /* tp_as_number */
0, /* tp_as_sequence */
0, /* tp_as_mapping */
0, /* tp_hash */
0, /* tp_call */
0, /* tp_str */
0, /* tp_getattro */
0, /* tp_setattro */
0, /* tp_as_buffer */
Py_TPFLAGS_DEFAULT, /* tp_flags */
kqueue_event_doc, /* tp_doc */
0, /* tp_traverse */
0, /* tp_clear */
(richcmpfunc)kqueue_event_richcompare, /* tp_richcompare */
0, /* tp_weaklistoffset */
0, /* tp_iter */
0, /* tp_iternext */
0, /* tp_methods */
kqueue_event_members, /* tp_members */
0, /* tp_getset */
0, /* tp_base */
0, /* tp_dict */
0, /* tp_descr_get */
0, /* tp_descr_set */
0, /* tp_dictoffset */
(initproc)kqueue_event_init, /* tp_init */
0, /* tp_alloc */
0, /* tp_new */
0, /* tp_free */
};
static PyObject *
kqueue_queue_err_closed(void)
{
PyErr_SetString(PyExc_ValueError, "I/O operation on closed kqueue object");
return NULL;
}
static int
kqueue_queue_internal_close(kqueue_queue_Object *self)
{
int save_errno = 0;
if (self->kqfd >= 0) {
int kqfd = self->kqfd;
self->kqfd = -1;
Py_BEGIN_ALLOW_THREADS
if (close(kqfd) < 0)
save_errno = errno;
Py_END_ALLOW_THREADS
}
return save_errno;
}
static PyObject *
newKqueue_Object(PyTypeObject *type, SOCKET fd)
{
kqueue_queue_Object *self;
assert(type != NULL && type->tp_alloc != NULL);
self = (kqueue_queue_Object *) type->tp_alloc(type, 0);
if (self == NULL) {
return NULL;
}
if (fd == -1) {
Py_BEGIN_ALLOW_THREADS
self->kqfd = kqueue();
Py_END_ALLOW_THREADS
}
else {
self->kqfd = fd;
}
if (self->kqfd < 0) {
Py_DECREF(self);
PyErr_SetFromErrno(PyExc_OSError);
return NULL;
}
if (fd == -1) {
if (_Py_set_inheritable(self->kqfd, 0, NULL) < 0) {
Py_DECREF(self);
return NULL;
}
}
return (PyObject *)self;
}
static PyObject *
kqueue_queue_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
{
if ((args != NULL && PyObject_Size(args)) ||
(kwds != NULL && PyObject_Size(kwds))) {
PyErr_SetString(PyExc_ValueError,
"select.kqueue doesn't accept arguments");
return NULL;
}
return newKqueue_Object(type, -1);
}
static void
kqueue_queue_dealloc(kqueue_queue_Object *self)
{
kqueue_queue_internal_close(self);
Py_TYPE(self)->tp_free(self);
}
static PyObject*
kqueue_queue_close(kqueue_queue_Object *self)
{
errno = kqueue_queue_internal_close(self);
if (errno < 0) {
PyErr_SetFromErrno(PyExc_OSError);
return NULL;
}
Py_RETURN_NONE;
}
PyDoc_STRVAR(kqueue_queue_close_doc,
"close() -> None\n\
\n\
Close the kqueue control file descriptor. Further operations on the kqueue\n\
object will raise an exception.");
static PyObject*
kqueue_queue_get_closed(kqueue_queue_Object *self, void *Py_UNUSED(ignored))
{
if (self->kqfd < 0)
Py_RETURN_TRUE;
else
Py_RETURN_FALSE;
}
static PyObject*
kqueue_queue_fileno(kqueue_queue_Object *self)
{
if (self->kqfd < 0)
return kqueue_queue_err_closed();
return PyLong_FromLong(self->kqfd);
}
PyDoc_STRVAR(kqueue_queue_fileno_doc,
"fileno() -> int\n\
\n\
Return the kqueue control file descriptor.");
static PyObject*
kqueue_queue_fromfd(PyObject *cls, PyObject *args)
{
SOCKET fd;
if (!PyArg_ParseTuple(args, "i:fromfd", &fd))
return NULL;
return newKqueue_Object((PyTypeObject*)cls, fd);
}
PyDoc_STRVAR(kqueue_queue_fromfd_doc,
"fromfd(fd) -> kqueue\n\
\n\
Create a kqueue object from a given control fd.");
static PyObject *
kqueue_queue_control(kqueue_queue_Object *self, PyObject *args)
{
int nevents = 0;
int gotevents = 0;
int nchanges = 0;
int i = 0;
PyObject *otimeout = NULL;
PyObject *ch = NULL;
PyObject *seq = NULL, *ei = NULL;
PyObject *result = NULL;
struct kevent *evl = NULL;
struct kevent *chl = NULL;
struct timespec timeoutspec;
struct timespec *ptimeoutspec;
_PyTime_t timeout, deadline = 0;
if (self->kqfd < 0)
return kqueue_queue_err_closed();
if (!PyArg_ParseTuple(args, "Oi|O:control", &ch, &nevents, &otimeout))
return NULL;
if (nevents < 0) {
PyErr_Format(PyExc_ValueError,
"Length of eventlist must be 0 or positive, got %d",
nevents);
return NULL;
}
if (otimeout == Py_None || otimeout == NULL) {
ptimeoutspec = NULL;
}
else {
if (_PyTime_FromSecondsObject(&timeout,
otimeout, _PyTime_ROUND_TIMEOUT) < 0) {
PyErr_Format(PyExc_TypeError,
"timeout argument must be a number "
"or None, got %.200s",
Py_TYPE(otimeout)->tp_name);
return NULL;
}
if (_PyTime_AsTimespec(timeout, &timeoutspec) == -1)
return NULL;
if (timeoutspec.tv_sec < 0) {
PyErr_SetString(PyExc_ValueError,
"timeout must be positive or None");
return NULL;
}
ptimeoutspec = &timeoutspec;
}
if (ch != NULL && ch != Py_None) {
seq = PySequence_Fast(ch, "changelist is not iterable");
if (seq == NULL) {
return NULL;
}
if (PySequence_Fast_GET_SIZE(seq) > INT_MAX) {
PyErr_SetString(PyExc_OverflowError,
"changelist is too long");
goto error;
}
nchanges = (int)PySequence_Fast_GET_SIZE(seq);
chl = PyMem_New(struct kevent, nchanges);
if (chl == NULL) {
PyErr_NoMemory();
goto error;
}
for (i = 0; i < nchanges; ++i) {
ei = PySequence_Fast_GET_ITEM(seq, i);
if (!kqueue_event_Check(ei)) {
PyErr_SetString(PyExc_TypeError,
"changelist must be an iterable of "
"select.kevent objects");
goto error;
}
chl[i] = ((kqueue_event_Object *)ei)->e;
}
Py_CLEAR(seq);
}
/* event list */
if (nevents) {
evl = PyMem_New(struct kevent, nevents);
if (evl == NULL) {
PyErr_NoMemory();
goto error;
}
}
if (ptimeoutspec)
deadline = _PyTime_GetMonotonicClock() + timeout;
do {
Py_BEGIN_ALLOW_THREADS
errno = 0;
gotevents = kevent(self->kqfd, chl, nchanges,
evl, nevents, ptimeoutspec);
Py_END_ALLOW_THREADS
if (errno != EINTR)
break;
/* kevent() was interrupted by a signal */
if (PyErr_CheckSignals())
goto error;
if (ptimeoutspec) {
timeout = deadline - _PyTime_GetMonotonicClock();
if (timeout < 0) {
gotevents = 0;
break;
}
if (_PyTime_AsTimespec(timeout, &timeoutspec) == -1)
goto error;
/* retry kevent() with the recomputed timeout */
}
} while (1);
if (gotevents == -1) {
PyErr_SetFromErrno(PyExc_OSError);
goto error;
}
result = PyList_New(gotevents);
if (result == NULL) {
goto error;
}
for (i = 0; i < gotevents; i++) {
kqueue_event_Object *ch;
ch = PyObject_New(kqueue_event_Object, &kqueue_event_Type);
if (ch == NULL) {
goto error;
}
ch->e = evl[i];
PyList_SET_ITEM(result, i, (PyObject *)ch);
}
PyMem_Free(chl);
PyMem_Free(evl);
return result;
error:
PyMem_Free(chl);
PyMem_Free(evl);
Py_XDECREF(result);
Py_XDECREF(seq);
return NULL;
}
PyDoc_STRVAR(kqueue_queue_control_doc,
"control(changelist, max_events[, timeout=None]) -> eventlist\n\
\n\
Calls the kernel kevent function.\n\
- changelist must be an iterable of kevent objects describing the changes\n\
to be made to the kernel's watch list or None.\n\
- max_events lets you specify the maximum number of events that the\n\
kernel will return.\n\
- timeout is the maximum time to wait in seconds, or else None,\n\
to wait forever. timeout accepts floats for smaller timeouts, too.");
static PyMethodDef kqueue_queue_methods[] = {
{"fromfd", (PyCFunction)kqueue_queue_fromfd,
METH_VARARGS | METH_CLASS, kqueue_queue_fromfd_doc},
{"close", (PyCFunction)kqueue_queue_close, METH_NOARGS,
kqueue_queue_close_doc},
{"fileno", (PyCFunction)kqueue_queue_fileno, METH_NOARGS,
kqueue_queue_fileno_doc},
{"control", (PyCFunction)kqueue_queue_control,
METH_VARARGS , kqueue_queue_control_doc},
{NULL, NULL},
};
static PyGetSetDef kqueue_queue_getsetlist[] = {
{"closed", (getter)kqueue_queue_get_closed, NULL,
"True if the kqueue handler is closed"},
{0},
};
PyDoc_STRVAR(kqueue_queue_doc,
"Kqueue syscall wrapper.\n\
\n\
For example, to start watching a socket for input:\n\
>>> kq = kqueue()\n\
>>> sock = socket()\n\
>>> sock.connect((host, port))\n\
>>> kq.control([kevent(sock, KQ_FILTER_WRITE, KQ_EV_ADD)], 0)\n\
\n\
To wait one second for it to become writeable:\n\
>>> kq.control(None, 1, 1000)\n\
\n\
To stop listening:\n\
>>> kq.control([kevent(sock, KQ_FILTER_WRITE, KQ_EV_DELETE)], 0)");
static PyTypeObject kqueue_queue_Type = {
PyVarObject_HEAD_INIT(NULL, 0)
"select.kqueue", /* tp_name */
sizeof(kqueue_queue_Object), /* tp_basicsize */
0, /* tp_itemsize */
(destructor)kqueue_queue_dealloc, /* tp_dealloc */
0, /* tp_print */
0, /* tp_getattr */
0, /* tp_setattr */
0, /* tp_reserved */
0, /* tp_repr */
0, /* tp_as_number */
0, /* tp_as_sequence */
0, /* tp_as_mapping */
0, /* tp_hash */
0, /* tp_call */
0, /* tp_str */
0, /* tp_getattro */
0, /* tp_setattro */
0, /* tp_as_buffer */
Py_TPFLAGS_DEFAULT, /* tp_flags */
kqueue_queue_doc, /* tp_doc */
0, /* tp_traverse */
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
0, /* tp_iter */
0, /* tp_iternext */
kqueue_queue_methods, /* tp_methods */
0, /* tp_members */
kqueue_queue_getsetlist, /* tp_getset */
0, /* tp_base */
0, /* tp_dict */
0, /* tp_descr_get */
0, /* tp_descr_set */
0, /* tp_dictoffset */
0, /* tp_init */
0, /* tp_alloc */
kqueue_queue_new, /* tp_new */
0, /* tp_free */
};
#endif /* HAVE_KQUEUE */
/* ************************************************************************ */
PyDoc_STRVAR(select_doc,
"select(rlist, wlist, xlist[, timeout]) -> (rlist, wlist, xlist)\n\
\n\
Wait until one or more file descriptors are ready for some kind of I/O.\n\
The first three arguments are sequences of file descriptors to be waited for:\n\
rlist -- wait until ready for reading\n\
wlist -- wait until ready for writing\n\
xlist -- wait for an ``exceptional condition''\n\
If only one kind of condition is required, pass [] for the other lists.\n\
A file descriptor is either a socket or file object, or a small integer\n\
gotten from a fileno() method call on one of those.\n\
\n\
The optional 4th argument specifies a timeout in seconds; it may be\n\
a floating point number to specify fractions of seconds. If it is absent\n\
or None, the call will never time out.\n\
\n\
The return value is a tuple of three lists corresponding to the first three\n\
arguments; each contains the subset of the corresponding file descriptors\n\
that are ready.\n\
\n\
*** IMPORTANT NOTICE ***\n\
On Windows, only sockets are supported; on Unix, all file\n\
descriptors can be used.");
static PyMethodDef select_methods[] = {
{"select", select_select, METH_VARARGS, select_doc},
#if defined(HAVE_POLL) && !defined(HAVE_BROKEN_POLL)
{"poll", select_poll, METH_NOARGS, poll_doc},
#endif /* HAVE_POLL */
#ifdef HAVE_SYS_DEVPOLL_H
{"devpoll", select_devpoll, METH_NOARGS, devpoll_doc},
#endif
{0, 0}, /* sentinel */
};
PyDoc_STRVAR(module_doc,
"This module supports asynchronous I/O on multiple file descriptors.\n\
\n\
*** IMPORTANT NOTICE ***\n\
On Windows, only sockets are supported; on Unix, all file descriptors.");
static struct PyModuleDef selectmodule = {
PyModuleDef_HEAD_INIT,
"select",
module_doc,
-1,
select_methods,
NULL,
NULL,
NULL,
NULL
};
PyMODINIT_FUNC
PyInit_select(void)
{
PyObject *m;
m = PyModule_Create(&selectmodule);
if (m == NULL)
return NULL;
Py_INCREF(PyExc_OSError);
PyModule_AddObject(m, "error", PyExc_OSError);
#ifdef PIPE_BUF
#ifdef HAVE_BROKEN_PIPE_BUF
#undef PIPE_BUF
#define PIPE_BUF 512
#endif
PyModule_AddIntMacro(m, PIPE_BUF);
#endif
#if defined(HAVE_POLL) && !defined(HAVE_BROKEN_POLL)
#ifdef __APPLE__
if (select_have_broken_poll()) {
if (PyObject_DelAttrString(m, "poll") == -1) {
PyErr_Clear();
}
} else {
#else
{
#endif
if (PyType_Ready(&poll_Type) < 0)
return NULL;
PyModule_AddIntMacro(m, POLLIN);
PyModule_AddIntMacro(m, POLLPRI);
PyModule_AddIntMacro(m, POLLOUT);
PyModule_AddIntMacro(m, POLLERR);
PyModule_AddIntMacro(m, POLLHUP);
PyModule_AddIntMacro(m, POLLNVAL);
#ifdef POLLRDNORM
PyModule_AddIntMacro(m, POLLRDNORM);
#endif
#ifdef POLLRDBAND
PyModule_AddIntMacro(m, POLLRDBAND);
#endif
#ifdef POLLWRNORM
PyModule_AddIntMacro(m, POLLWRNORM);
#endif
#ifdef POLLWRBAND
PyModule_AddIntMacro(m, POLLWRBAND);
#endif
#ifdef POLLMSG
PyModule_AddIntMacro(m, POLLMSG);
#endif
#ifdef POLLRDHUP
/* Kernel 2.6.17+ */
PyModule_AddIntMacro(m, POLLRDHUP);
#endif
}
#endif /* HAVE_POLL */
#ifdef HAVE_SYS_DEVPOLL_H
if (PyType_Ready(&devpoll_Type) < 0)
return NULL;
#endif
#ifdef HAVE_EPOLL
Py_TYPE(&pyEpoll_Type) = &PyType_Type;
if (PyType_Ready(&pyEpoll_Type) < 0)
return NULL;
Py_INCREF(&pyEpoll_Type);
PyModule_AddObject(m, "epoll", (PyObject *) &pyEpoll_Type);
PyModule_AddIntMacro(m, EPOLLIN);
PyModule_AddIntMacro(m, EPOLLOUT);
PyModule_AddIntMacro(m, EPOLLPRI);
PyModule_AddIntMacro(m, EPOLLERR);
PyModule_AddIntMacro(m, EPOLLHUP);
#ifdef EPOLLRDHUP
/* Kernel 2.6.17 */
PyModule_AddIntMacro(m, EPOLLRDHUP);
#endif
PyModule_AddIntMacro(m, EPOLLET);
#ifdef EPOLLONESHOT
/* Kernel 2.6.2+ */
PyModule_AddIntMacro(m, EPOLLONESHOT);
#endif
#ifdef EPOLLEXCLUSIVE
PyModule_AddIntMacro(m, EPOLLEXCLUSIVE);
#endif
#ifdef EPOLLRDNORM
PyModule_AddIntMacro(m, EPOLLRDNORM);
#endif
#ifdef EPOLLRDBAND
PyModule_AddIntMacro(m, EPOLLRDBAND);
#endif
#ifdef EPOLLWRNORM
PyModule_AddIntMacro(m, EPOLLWRNORM);
#endif
#ifdef EPOLLWRBAND
PyModule_AddIntMacro(m, EPOLLWRBAND);
#endif
#ifdef EPOLLMSG
PyModule_AddIntMacro(m, EPOLLMSG);
#endif
#ifdef EPOLL_CLOEXEC
PyModule_AddIntMacro(m, EPOLL_CLOEXEC);
#endif
#endif /* HAVE_EPOLL */
#ifdef HAVE_KQUEUE
kqueue_event_Type.tp_new = PyType_GenericNew;
Py_TYPE(&kqueue_event_Type) = &PyType_Type;
if(PyType_Ready(&kqueue_event_Type) < 0)
return NULL;
Py_INCREF(&kqueue_event_Type);
PyModule_AddObject(m, "kevent", (PyObject *)&kqueue_event_Type);
Py_TYPE(&kqueue_queue_Type) = &PyType_Type;
if(PyType_Ready(&kqueue_queue_Type) < 0)
return NULL;
Py_INCREF(&kqueue_queue_Type);
PyModule_AddObject(m, "kqueue", (PyObject *)&kqueue_queue_Type);
/* event filters */
PyModule_AddIntConstant(m, "KQ_FILTER_READ", EVFILT_READ);
PyModule_AddIntConstant(m, "KQ_FILTER_WRITE", EVFILT_WRITE);
#ifdef EVFILT_AIO
PyModule_AddIntConstant(m, "KQ_FILTER_AIO", EVFILT_AIO);
#endif
#ifdef EVFILT_VNODE
PyModule_AddIntConstant(m, "KQ_FILTER_VNODE", EVFILT_VNODE);
#endif
#ifdef EVFILT_PROC
PyModule_AddIntConstant(m, "KQ_FILTER_PROC", EVFILT_PROC);
#endif
#ifdef EVFILT_NETDEV
PyModule_AddIntConstant(m, "KQ_FILTER_NETDEV", EVFILT_NETDEV);
#endif
#ifdef EVFILT_SIGNAL
PyModule_AddIntConstant(m, "KQ_FILTER_SIGNAL", EVFILT_SIGNAL);
#endif
PyModule_AddIntConstant(m, "KQ_FILTER_TIMER", EVFILT_TIMER);
/* event flags */
PyModule_AddIntConstant(m, "KQ_EV_ADD", EV_ADD);
PyModule_AddIntConstant(m, "KQ_EV_DELETE", EV_DELETE);
PyModule_AddIntConstant(m, "KQ_EV_ENABLE", EV_ENABLE);
PyModule_AddIntConstant(m, "KQ_EV_DISABLE", EV_DISABLE);
PyModule_AddIntConstant(m, "KQ_EV_ONESHOT", EV_ONESHOT);
PyModule_AddIntConstant(m, "KQ_EV_CLEAR", EV_CLEAR);
#ifdef EV_SYSFLAGS
PyModule_AddIntConstant(m, "KQ_EV_SYSFLAGS", EV_SYSFLAGS);
#endif
#ifdef EV_FLAG1
PyModule_AddIntConstant(m, "KQ_EV_FLAG1", EV_FLAG1);
#endif
PyModule_AddIntConstant(m, "KQ_EV_EOF", EV_EOF);
PyModule_AddIntConstant(m, "KQ_EV_ERROR", EV_ERROR);
/* READ WRITE filter flag */
#ifdef NOTE_LOWAT
PyModule_AddIntConstant(m, "KQ_NOTE_LOWAT", NOTE_LOWAT);
#endif
/* VNODE filter flags */
#ifdef EVFILT_VNODE
PyModule_AddIntConstant(m, "KQ_NOTE_DELETE", NOTE_DELETE);
PyModule_AddIntConstant(m, "KQ_NOTE_WRITE", NOTE_WRITE);
PyModule_AddIntConstant(m, "KQ_NOTE_EXTEND", NOTE_EXTEND);
PyModule_AddIntConstant(m, "KQ_NOTE_ATTRIB", NOTE_ATTRIB);
PyModule_AddIntConstant(m, "KQ_NOTE_LINK", NOTE_LINK);
PyModule_AddIntConstant(m, "KQ_NOTE_RENAME", NOTE_RENAME);
PyModule_AddIntConstant(m, "KQ_NOTE_REVOKE", NOTE_REVOKE);
#endif
/* PROC filter flags */
#ifdef EVFILT_PROC
PyModule_AddIntConstant(m, "KQ_NOTE_EXIT", NOTE_EXIT);
PyModule_AddIntConstant(m, "KQ_NOTE_FORK", NOTE_FORK);
PyModule_AddIntConstant(m, "KQ_NOTE_EXEC", NOTE_EXEC);
PyModule_AddIntConstant(m, "KQ_NOTE_PCTRLMASK", NOTE_PCTRLMASK);
PyModule_AddIntConstant(m, "KQ_NOTE_PDATAMASK", NOTE_PDATAMASK);
PyModule_AddIntConstant(m, "KQ_NOTE_TRACK", NOTE_TRACK);
PyModule_AddIntConstant(m, "KQ_NOTE_CHILD", NOTE_CHILD);
PyModule_AddIntConstant(m, "KQ_NOTE_TRACKERR", NOTE_TRACKERR);
#endif
/* NETDEV filter flags */
#ifdef EVFILT_NETDEV
PyModule_AddIntConstant(m, "KQ_NOTE_LINKUP", NOTE_LINKUP);
PyModule_AddIntConstant(m, "KQ_NOTE_LINKDOWN", NOTE_LINKDOWN);
PyModule_AddIntConstant(m, "KQ_NOTE_LINKINV", NOTE_LINKINV);
#endif
#endif /* HAVE_KQUEUE */
return m;
}
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