diff options
Diffstat (limited to 'AppPkg/Applications/Python/Python-2.7.2/Modules/selectmodule.c')
| -rw-r--r-- | AppPkg/Applications/Python/Python-2.7.2/Modules/selectmodule.c | 1912 |
1 files changed, 1912 insertions, 0 deletions
diff --git a/AppPkg/Applications/Python/Python-2.7.2/Modules/selectmodule.c b/AppPkg/Applications/Python/Python-2.7.2/Modules/selectmodule.c new file mode 100644 index 0000000000..81e5af88a7 --- /dev/null +++ b/AppPkg/Applications/Python/Python-2.7.2/Modules/selectmodule.c @@ -0,0 +1,1912 @@ +/* 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.
+ Under BeOS, we suffer the same dichotomy as Win32; sockets can be anything
+ >= 0.
+*/
+
+#include "Python.h"
+#include <structmember.h>
+
+#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
+
+#if defined(PYOS_OS2) && !defined(PYCC_GCC)
+#include <sys/time.h>
+#include <utils.h>
+#endif
+
+#ifdef MS_WINDOWS
+# include <winsock2.h>
+#else
+# define SOCKET int
+# ifdef __BEOS__
+# include <net/socket.h>
+# elif defined(__VMS)
+# include <socket.h>
+# endif
+#endif
+
+static PyObject *SelectError;
+
+/* 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])
+{
+ int i;
+ for (i = 0; i < FD_SETSIZE + 1 && fd2obj[i].sentinel >= 0; i++) {
+ Py_XDECREF(fd2obj[i].obj);
+ fd2obj[i].obj = NULL;
+ }
+ 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 i;
+ int max = -1;
+ int index = 0;
+ int len = -1;
+ 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;
+
+ len = PySequence_Fast_GET_SIZE(fast_seq);
+
+ for (i = 0; i < len; i++) {
+ SOCKET v;
+
+ /* any intervening fileno() calls could decr this refcnt */
+ if (!(o = PySequence_Fast_GET_ITEM(fast_seq, i)))
+ return -1;
+
+ Py_INCREF(o);
+ v = PyObject_AsFileDescriptor( o );
+ if (v == -1) goto finally;
+
+#if defined(_MSC_VER) && !defined(UEFI_C_SOURCE)
+ max = 0; /* not used for Win32 */
+#else /* !_MSC_VER */
+ if (v < 0 || v >= FD_SETSIZE) {
+ 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 >= 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)) {
+#if !defined(_MSC_VER) || defined(UEFI_C_SOURCE)
+ if (fd > FD_SETSIZE) {
+ PyErr_SetString(PyExc_SystemError,
+ "filedescriptor out of range returned in select()");
+ goto finally;
+ }
+#endif
+ 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 *tout = Py_None;
+ fd_set ifdset, ofdset, efdset;
+ double timeout;
+ struct timeval tv, *tvp;
+ long seconds;
+ int imax, omax, emax, max;
+ int n;
+
+ /* convert arguments */
+ if (!PyArg_UnpackTuple(args, "select", 3, 4,
+ &ifdlist, &ofdlist, &efdlist, &tout))
+ return NULL;
+
+ if (tout == Py_None)
+ tvp = (struct timeval *)0;
+ else if (!PyNumber_Check(tout)) {
+ PyErr_SetString(PyExc_TypeError,
+ "timeout must be a float or None");
+ return NULL;
+ }
+ else {
+ timeout = PyFloat_AsDouble(tout);
+ if (timeout == -1 && PyErr_Occurred())
+ return NULL;
+ if (timeout > (double)LONG_MAX) {
+ PyErr_SetString(PyExc_OverflowError,
+ "timeout period too long");
+ return NULL;
+ }
+ seconds = (long)timeout;
+ timeout = timeout - (double)seconds;
+ tv.tv_sec = seconds;
+ tv.tv_usec = (long)(timeout * 1E6);
+ 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;
+
+ Py_BEGIN_ALLOW_THREADS
+ n = select(max, &ifdset, &ofdset, &efdset, tvp);
+ Py_END_ALLOW_THREADS
+
+#ifdef MS_WINDOWS
+ if (n == SOCKET_ERROR) {
+ PyErr_SetExcFromWindowsErr(SelectError, WSAGetLastError());
+ }
+#else
+ if (n < 0) {
+ PyErr_SetFromErrno(SelectError);
+ }
+#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_DECREF(ifdlist);
+ Py_DECREF(ofdlist);
+ Py_DECREF(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;
+} 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)) {
+ self->ufds[i].fd = PyInt_AsLong(key);
+ self->ufds[i].events = (short)PyInt_AsLong(value);
+ i++;
+ }
+ self->ufd_uptodate = 1;
+ 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, events = POLLIN | POLLPRI | POLLOUT;
+ int err;
+
+ if (!PyArg_ParseTuple(args, "O|i:register", &o, &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 = PyInt_FromLong(fd);
+ if (key == NULL)
+ return NULL;
+ value = PyInt_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, events;
+ int err;
+
+ if (!PyArg_ParseTuple(args, "Oi:modify", &o, &events)) {
+ return NULL;
+ }
+
+ fd = PyObject_AsFileDescriptor(o);
+ if (fd == -1) return NULL;
+
+ /* Modify registered fd */
+ key = PyInt_FromLong(fd);
+ if (key == NULL)
+ return NULL;
+ if (PyDict_GetItem(self->dict, key) == NULL) {
+ errno = ENOENT;
+ PyErr_SetFromErrno(PyExc_IOError);
+ return NULL;
+ }
+ value = PyInt_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 = PyInt_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, *tout = NULL;
+ int timeout = 0, poll_result, i, j;
+ PyObject *value = NULL, *num = NULL;
+
+ if (!PyArg_UnpackTuple(args, "poll", 0, 1, &tout)) {
+ return NULL;
+ }
+
+ /* Check values for timeout */
+ if (tout == NULL || tout == Py_None)
+ timeout = -1;
+ else if (!PyNumber_Check(tout)) {
+ PyErr_SetString(PyExc_TypeError,
+ "timeout must be an integer or None");
+ return NULL;
+ }
+ else {
+ tout = PyNumber_Int(tout);
+ if (!tout)
+ return NULL;
+ timeout = PyInt_AsLong(tout);
+ Py_DECREF(tout);
+ if (timeout == -1 && PyErr_Occurred())
+ return NULL;
+ }
+
+ /* Ensure the ufd array is up to date */
+ if (!self->ufd_uptodate)
+ if (update_ufd_array(self) == 0)
+ return NULL;
+
+ /* call poll() */
+ Py_BEGIN_ALLOW_THREADS
+ poll_result = poll(self->ufds, self->ufd_len, timeout);
+ Py_END_ALLOW_THREADS
+
+ if (poll_result < 0) {
+ PyErr_SetFromErrno(SelectError);
+ return NULL;
+ }
+
+ /* build the result list */
+
+ result_list = PyList_New(poll_result);
+ if (!result_list)
+ return NULL;
+ else {
+ 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 = PyInt_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 = PyInt_FromLong(self->ufds[i].revents & 0xffff);
+ if (num == NULL) {
+ Py_DECREF(value);
+ goto error;
+ }
+ PyTuple_SET_ITEM(value, 1, num);
+ if ((PyList_SetItem(result_list, j, value)) == -1) {
+ Py_DECREF(value);
+ goto error;
+ }
+ 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->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 PyObject *
+poll_getattr(pollObject *self, char *name)
+{
+ return Py_FindMethod(poll_methods, (PyObject *)self, name);
+}
+
+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*/
+ (getattrfunc)poll_getattr, /*tp_getattr*/
+ 0, /*tp_setattr*/
+ 0, /*tp_compare*/
+ 0, /*tp_repr*/
+ 0, /*tp_as_number*/
+ 0, /*tp_as_sequence*/
+ 0, /*tp_as_mapping*/
+ 0, /*tp_hash*/
+};
+
+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 __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 fd");
+ 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, SOCKET fd)
+{
+ pyEpoll_Object *self;
+
+ if (sizehint == -1) {
+ sizehint = FD_SETSIZE-1;
+ }
+ else if (sizehint < 1) {
+ PyErr_Format(PyExc_ValueError,
+ "sizehint must be greater zero, got %d",
+ sizehint);
+ return NULL;
+ }
+
+ 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
+ self->epfd = epoll_create(sizehint);
+ Py_END_ALLOW_THREADS
+ }
+ else {
+ self->epfd = fd;
+ }
+ if (self->epfd < 0) {
+ Py_DECREF(self);
+ PyErr_SetFromErrno(PyExc_IOError);
+ return NULL;
+ }
+ return (PyObject *)self;
+}
+
+
+static PyObject *
+pyepoll_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
+{
+ int sizehint = -1;
+ static char *kwlist[] = {"sizehint", NULL};
+
+ if (!PyArg_ParseTupleAndKeywords(args, kwds, "|i:epoll", kwlist,
+ &sizehint))
+ return NULL;
+
+ return newPyEpoll_Object(type, sizehint, -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_IOError);
+ 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)
+{
+ 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 PyInt_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, -1, 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_IOError);
+ 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 modifies an already registered fd.\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 EPOLL_IN | EPOLL_OUT | EPOLL_PRI.\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)
+{
+ double dtimeout = -1.;
+ int timeout;
+ int maxevents = -1;
+ int nfds, i;
+ PyObject *elist = NULL, *etuple = NULL;
+ struct epoll_event *evs = NULL;
+ static char *kwlist[] = {"timeout", "maxevents", NULL};
+
+ if (self->epfd < 0)
+ return pyepoll_err_closed();
+
+ if (!PyArg_ParseTupleAndKeywords(args, kwds, "|di:poll", kwlist,
+ &dtimeout, &maxevents)) {
+ return NULL;
+ }
+
+ if (dtimeout < 0) {
+ timeout = -1;
+ }
+ else if (dtimeout * 1000.0 > INT_MAX) {
+ PyErr_SetString(PyExc_OverflowError,
+ "timeout is too large");
+ return NULL;
+ }
+ else {
+ timeout = (int)(dtimeout * 1000.0);
+ }
+
+ 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) {
+ Py_DECREF(self);
+ PyErr_NoMemory();
+ return NULL;
+ }
+
+ Py_BEGIN_ALLOW_THREADS
+ nfds = epoll_wait(self->epfd, evs, maxevents, timeout);
+ Py_END_ALLOW_THREADS
+ if (nfds < 0) {
+ PyErr_SetFromErrno(PyExc_IOError);
+ 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 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},
+ {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])\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_compare */
+ 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 PyLong_AsUintptr_t PyLong_AsUnsignedLongLong
+# 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 PyLong_AsUintptr_t PyLong_AsUnsignedLong
+# 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 PyLong_AsUintptr_t PyLong_AsUnsignedLong
+# define UINTPTRT_FMT_UNIT "I"
+# define INTPTRT_FMT_UNIT "i"
+#else
+# error uintptr_t does not match int, long, or long long!
+#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", T_SHORT, KQ_OFF(e.filter)},
+ {"flags", T_USHORT, KQ_OFF(e.flags)},
+ {"fflags", T_UINT, KQ_OFF(e.fflags)},
+ {"data", T_INTPTRT, 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%zd udata=%p>",
+ (size_t)(s->e.ident), s->e.filter, s->e.flags,
+ s->e.fflags, (Py_ssize_t)(s->e.data), s->e.udata);
+ return PyString_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 char *fmt = "O|hhi" INTPTRT_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_AsUintptr_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)
+{
+ Py_intptr_t result = 0;
+
+ if (!kqueue_event_Check(o)) {
+ if (op == Py_EQ || op == Py_NE) {
+ PyObject *res = op == Py_EQ ? Py_False : Py_True;
+ Py_INCREF(res);
+ return res;
+ }
+ PyErr_Format(PyExc_TypeError,
+ "can't compare %.200s to %.200s",
+ Py_TYPE(s)->tp_name, Py_TYPE(o)->tp_name);
+ return NULL;
+ }
+ if (((result = s->e.ident - o->e.ident) == 0) &&
+ ((result = s->e.filter - o->e.filter) == 0) &&
+ ((result = s->e.flags - o->e.flags) == 0) &&
+ ((result = s->e.fflags - o->e.fflags) == 0) &&
+ ((result = s->e.data - o->e.data) == 0) &&
+ ((result = s->e.udata - o->e.udata) == 0)
+ ) {
+ result = 0;
+ }
+
+ 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_compare */
+ (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 fd");
+ 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_IOError);
+ 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_IOError);
+ 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)
+{
+ 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 PyInt_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 *it = NULL, *ei = NULL;
+ PyObject *result = NULL;
+ struct kevent *evl = NULL;
+ struct kevent *chl = NULL;
+ struct timespec timeoutspec;
+ struct timespec *ptimeoutspec;
+
+ 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 (PyNumber_Check(otimeout)) {
+ double timeout;
+ long seconds;
+
+ timeout = PyFloat_AsDouble(otimeout);
+ if (timeout == -1 && PyErr_Occurred())
+ return NULL;
+ if (timeout > (double)LONG_MAX) {
+ PyErr_SetString(PyExc_OverflowError,
+ "timeout period too long");
+ return NULL;
+ }
+ if (timeout < 0) {
+ PyErr_SetString(PyExc_ValueError,
+ "timeout must be positive or None");
+ return NULL;
+ }
+
+ seconds = (long)timeout;
+ timeout = timeout - (double)seconds;
+ timeoutspec.tv_sec = seconds;
+ timeoutspec.tv_nsec = (long)(timeout * 1E9);
+ ptimeoutspec = &timeoutspec;
+ }
+ else {
+ PyErr_Format(PyExc_TypeError,
+ "timeout argument must be an number "
+ "or None, got %.200s",
+ Py_TYPE(otimeout)->tp_name);
+ return NULL;
+ }
+
+ if (ch != NULL && ch != Py_None) {
+ it = PyObject_GetIter(ch);
+ if (it == NULL) {
+ PyErr_SetString(PyExc_TypeError,
+ "changelist is not iterable");
+ return NULL;
+ }
+ nchanges = PyObject_Size(ch);
+ if (nchanges < 0) {
+ goto error;
+ }
+
+ chl = PyMem_New(struct kevent, nchanges);
+ if (chl == NULL) {
+ PyErr_NoMemory();
+ goto error;
+ }
+ i = 0;
+ while ((ei = PyIter_Next(it)) != NULL) {
+ if (!kqueue_event_Check(ei)) {
+ Py_DECREF(ei);
+ PyErr_SetString(PyExc_TypeError,
+ "changelist must be an iterable of "
+ "select.kevent objects");
+ goto error;
+ } else {
+ chl[i++] = ((kqueue_event_Object *)ei)->e;
+ }
+ Py_DECREF(ei);
+ }
+ }
+ Py_CLEAR(it);
+
+ /* event list */
+ if (nevents) {
+ evl = PyMem_New(struct kevent, nevents);
+ if (evl == NULL) {
+ PyErr_NoMemory();
+ goto error;
+ }
+ }
+
+ Py_BEGIN_ALLOW_THREADS
+ gotevents = kevent(self->kqfd, chl, nchanges,
+ evl, nevents, ptimeoutspec);
+ Py_END_ALLOW_THREADS
+
+ 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(it);
+ 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 a list 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_compare */
+ 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 and OpenVMS, only sockets are supported; on Unix, all file\n\
+descriptors can be used.");
+
+static PyMethodDef select_methods[] = {
+ {"select", select_select, METH_VARARGS, select_doc},
+#ifdef HAVE_POLL
+ {"poll", select_poll, METH_NOARGS, poll_doc},
+#endif /* HAVE_POLL */
+ {0, 0}, /* sentinel */
+};
+
+PyDoc_STRVAR(module_doc,
+"This module supports asynchronous I/O on multiple file descriptors.\n\
+\n\
+*** IMPORTANT NOTICE ***\n\
+On Windows and OpenVMS, only sockets are supported; on Unix, all file descriptors.");
+
+PyMODINIT_FUNC
+initselect(void)
+{
+ PyObject *m;
+ m = Py_InitModule3("select", select_methods, module_doc);
+ if (m == NULL)
+ return;
+
+ SelectError = PyErr_NewException("select.error", NULL, NULL);
+ Py_INCREF(SelectError);
+ PyModule_AddObject(m, "error", SelectError);
+
+#ifdef PIPE_BUF
+#ifdef HAVE_BROKEN_PIPE_BUF
+#undef PIPE_BUF
+#define PIPE_BUF 512
+#endif
+ PyModule_AddIntConstant(m, "PIPE_BUF", PIPE_BUF);
+#endif
+
+#if defined(HAVE_POLL)
+#ifdef __APPLE__
+ if (select_have_broken_poll()) {
+ if (PyObject_DelAttrString(m, "poll") == -1) {
+ PyErr_Clear();
+ }
+ } else {
+#else
+ {
+#endif
+ Py_TYPE(&poll_Type) = &PyType_Type;
+ PyModule_AddIntConstant(m, "POLLIN", POLLIN);
+ PyModule_AddIntConstant(m, "POLLPRI", POLLPRI);
+ PyModule_AddIntConstant(m, "POLLOUT", POLLOUT);
+ PyModule_AddIntConstant(m, "POLLERR", POLLERR);
+ PyModule_AddIntConstant(m, "POLLHUP", POLLHUP);
+ PyModule_AddIntConstant(m, "POLLNVAL", POLLNVAL);
+
+#ifdef POLLRDNORM
+ PyModule_AddIntConstant(m, "POLLRDNORM", POLLRDNORM);
+#endif
+#ifdef POLLRDBAND
+ PyModule_AddIntConstant(m, "POLLRDBAND", POLLRDBAND);
+#endif
+#ifdef POLLWRNORM
+ PyModule_AddIntConstant(m, "POLLWRNORM", POLLWRNORM);
+#endif
+#ifdef POLLWRBAND
+ PyModule_AddIntConstant(m, "POLLWRBAND", POLLWRBAND);
+#endif
+#ifdef POLLMSG
+ PyModule_AddIntConstant(m, "POLLMSG", POLLMSG);
+#endif
+ }
+#endif /* HAVE_POLL */
+
+#ifdef HAVE_EPOLL
+ Py_TYPE(&pyEpoll_Type) = &PyType_Type;
+ if (PyType_Ready(&pyEpoll_Type) < 0)
+ return;
+
+ Py_INCREF(&pyEpoll_Type);
+ PyModule_AddObject(m, "epoll", (PyObject *) &pyEpoll_Type);
+
+ PyModule_AddIntConstant(m, "EPOLLIN", EPOLLIN);
+ PyModule_AddIntConstant(m, "EPOLLOUT", EPOLLOUT);
+ PyModule_AddIntConstant(m, "EPOLLPRI", EPOLLPRI);
+ PyModule_AddIntConstant(m, "EPOLLERR", EPOLLERR);
+ PyModule_AddIntConstant(m, "EPOLLHUP", EPOLLHUP);
+ PyModule_AddIntConstant(m, "EPOLLET", EPOLLET);
+#ifdef EPOLLONESHOT
+ /* Kernel 2.6.2+ */
+ PyModule_AddIntConstant(m, "EPOLLONESHOT", EPOLLONESHOT);
+#endif
+ /* PyModule_AddIntConstant(m, "EPOLL_RDHUP", EPOLLRDHUP); */
+ PyModule_AddIntConstant(m, "EPOLLRDNORM", EPOLLRDNORM);
+ PyModule_AddIntConstant(m, "EPOLLRDBAND", EPOLLRDBAND);
+ PyModule_AddIntConstant(m, "EPOLLWRNORM", EPOLLWRNORM);
+ PyModule_AddIntConstant(m, "EPOLLWRBAND", EPOLLWRBAND);
+ PyModule_AddIntConstant(m, "EPOLLMSG", EPOLLMSG);
+#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;
+
+ 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;
+ 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);
+ PyModule_AddIntConstant(m, "KQ_FILTER_AIO", EVFILT_AIO);
+ PyModule_AddIntConstant(m, "KQ_FILTER_VNODE", EVFILT_VNODE);
+ PyModule_AddIntConstant(m, "KQ_FILTER_PROC", EVFILT_PROC);
+#ifdef EVFILT_NETDEV
+ PyModule_AddIntConstant(m, "KQ_FILTER_NETDEV", EVFILT_NETDEV);
+#endif
+ PyModule_AddIntConstant(m, "KQ_FILTER_SIGNAL", EVFILT_SIGNAL);
+ 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);
+
+ PyModule_AddIntConstant(m, "KQ_EV_SYSFLAGS", EV_SYSFLAGS);
+ PyModule_AddIntConstant(m, "KQ_EV_FLAG1", EV_FLAG1);
+
+ PyModule_AddIntConstant(m, "KQ_EV_EOF", EV_EOF);
+ PyModule_AddIntConstant(m, "KQ_EV_ERROR", EV_ERROR);
+
+ /* READ WRITE filter flag */
+ PyModule_AddIntConstant(m, "KQ_NOTE_LOWAT", NOTE_LOWAT);
+
+ /* VNODE filter flags */
+ 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);
+
+ /* PROC filter flags */
+ 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);
+
+ /* 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 */
+}
|