AmigActive 15/AACD15.ISO/AACD/Programming/Python2/Python20_source/Modules/selectmodule.c

C/C++ Source or Header | 2000-10-25 | 19.1 KB | 810 lines

/* 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"

#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_POLL_H
#include <poll.h>
#endif

#ifdef __sgi
/* This is missing from unistd.h */
extern void bzero(void *, int);
#endif

#ifndef DONT_HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif

#if defined(PYOS_OS2)
#include <sys/time.h>
#include <utils.h>
#endif

#ifdef MS_WINDOWS
#include <winsock.h>
#else
#ifdef __BEOS__
#include <net/socket.h>
#define SOCKET int
#else
#define SOCKET int
#endif
#endif

#if defined(AMITCP) || defined(INET225)
#include <proto/socket.h>
#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 + 3])
{
    int i;
    for (i = 0; i < FD_SETSIZE + 3 && 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
list2set(PyObject *list, fd_set *set, pylist fd2obj[FD_SETSIZE + 3])
{
    int i;
    int max = -1;
    int index = 0;
    int len = PyList_Size(list);
    PyObject* o = NULL;

    fd2obj[0].obj = (PyObject*)0;         /* set list to zero size */
    FD_ZERO(set);

    for (i = 0; i < len; i++)  {
        SOCKET v;

        /* any intervening fileno() calls could decr this refcnt */
        if (!(o = PyList_GetItem(list, i)))
                    return -1;

        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 (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;
    }
    return max+1;

  finally:
    Py_XDECREF(o);
    return -1;
}

/* returns NULL and sets the Python exception if an error occurred */
static PyObject *
set2list(fd_set *set, pylist fd2obj[FD_SETSIZE + 3])
{
    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)) {
#ifndef _MSC_VER
            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;
}


#if defined(AMITCP) || defined(INET225)
/* Amiga's version of select: WaitSelect()/selectwait() support */
/* (additional 5th parameter: signal waitmask) */
static PyObject *
select_select(PyObject *self, PyObject *args)
{
#if defined (MS_WINDOWS) || defined (_AMIGA)
    /* This would be an awful lot of stack space on Windows! */
    pylist *rfd2obj, *wfd2obj, *efd2obj;
#else
    pylist rfd2obj[FD_SETSIZE + 3];
    pylist wfd2obj[FD_SETSIZE + 3];
    pylist efd2obj[FD_SETSIZE + 3];
#endif
    PyObject *ifdlist, *ofdlist, *efdlist;
    PyObject *ret = NULL;
    PyObject *tout = Py_None;
    fd_set ifdset, ofdset, efdset;
    double timeout;
    struct timeval tv, *tvp;
    int seconds;
    int imax, omax, emax, max;
    int n;
    ULONG waitmask=0;
    BOOL do_waitmask = FALSE;

    /* convert arguments */
    if (!PyArg_ParseTuple(args, "OOO|Oi",
                  &ifdlist, &ofdlist, &efdlist, &tout, &waitmask))
        return NULL;

    if (tout == Py_None)
        tvp = (struct timeval *)0;
    else if (!PyArg_Parse(tout, "d", &timeout)) {
        PyErr_SetString(PyExc_TypeError,
                "timeout must be a float or None");
        return NULL;
    }
    else {
        seconds = (int)timeout;
        timeout = timeout - (double)seconds;
        tv.tv_sec = seconds;
        tv.tv_usec = (int)(timeout*1000000.0);
        tvp = &tv;
    }

    if(waitmask) do_waitmask=TRUE;

    /* sanity check first three arguments */
    if (!PyList_Check(ifdlist) ||
        !PyList_Check(ofdlist) ||
        !PyList_Check(efdlist))
    {
        PyErr_SetString(PyExc_TypeError,
                "arguments 1-3 must be lists");
        return NULL;
    }

#if defined(MS_WINDOWS) || defined (_AMIGA)
    /* Allocate memory for the lists */
    rfd2obj = PyMem_NEW(pylist, FD_SETSIZE + 3);
    wfd2obj = PyMem_NEW(pylist, FD_SETSIZE + 3);
    efd2obj = PyMem_NEW(pylist, FD_SETSIZE + 3);
    if (rfd2obj == NULL || wfd2obj == NULL || efd2obj == NULL) {
        if (rfd2obj) PyMem_DEL(rfd2obj);
        if (wfd2obj) PyMem_DEL(wfd2obj);
        if (efd2obj) PyMem_DEL(efd2obj);
        return NULL;
    }
#endif
    /* Convert lists to fd_sets, and get maximum fd number
     * propagates the Python exception set in list2set()
     */
    rfd2obj[0].sentinel = -1;
    wfd2obj[0].sentinel = -1;
    efd2obj[0].sentinel = -1;
    if ((imax=list2set(ifdlist, &ifdset, rfd2obj)) < 0)
        goto finally;
    if ((omax=list2set(ofdlist, &ofdset, wfd2obj)) < 0)
        goto finally;
    if ((emax=list2set(efdlist, &efdset, efd2obj)) < 0)
        goto finally;
    max = imax;
    if (omax > max) max = omax;
    if (emax > max) max = emax;

    Py_BEGIN_ALLOW_THREADS
#ifdef AMITCP
    n = WaitSelect(max, &ifdset, &ofdset, &efdset, tvp, &waitmask);
#else /* INET225 */
    n = selectwait(max, &ifdset, &ofdset, &efdset, tvp, &waitmask);
#endif
    Py_END_ALLOW_THREADS

    if (n < 0) {
        PyErr_SetFromErrno(SelectError);
    }
    else if (n == 0) {
                /* optimization */
        ifdlist = PyList_New(0);
        if (ifdlist) {
            if(do_waitmask) ret=Py_BuildValue("OOOi", ifdlist, ifdlist, ifdlist, waitmask);
            else ret = Py_BuildValue("OOO", ifdlist, ifdlist, ifdlist);
            Py_DECREF(ifdlist);
        }
    }
    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
        {
            if(do_waitmask) ret=Py_BuildValue("OOOi", ifdlist, ofdlist, efdlist, waitmask);
            else ret = Py_BuildValue("OOO", ifdlist, ofdlist, efdlist);
        }

        Py_DECREF(ifdlist);
        Py_DECREF(ofdlist);
        Py_DECREF(efdlist);
    }

  finally:
    reap_obj(rfd2obj);
    reap_obj(wfd2obj);
    reap_obj(efd2obj);
#if defined(MS_WINDOWS) || defined (_AMIGA)
    PyMem_DEL(rfd2obj);
    PyMem_DEL(wfd2obj);
    PyMem_DEL(efd2obj);
#endif
    return ret;
}

#else /* ! AMITCP || INET225 */
/* This is the select function for all other platforms */

static PyObject *
select_select(PyObject *self, PyObject *args)
{
#ifdef MS_WINDOWS
    /* This would be an awful lot of stack space on Windows! */
    pylist *rfd2obj, *wfd2obj, *efd2obj;
#else
    pylist rfd2obj[FD_SETSIZE + 3];
    pylist wfd2obj[FD_SETSIZE + 3];
    pylist efd2obj[FD_SETSIZE + 3];
#endif
    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_ParseTuple(args, "OOO|O:select",
                  &ifdlist, &ofdlist, &efdlist, &tout))
        return NULL;

    if (tout == Py_None)
        tvp = (struct timeval *)0;
    else if (!PyArg_Parse(tout, "d", &timeout)) {
        PyErr_SetString(PyExc_TypeError,
                "timeout must be a float or None");
        return NULL;
    }
    else {
        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*1000000.0);
        tvp = &tv;
    }

    /* sanity check first three arguments */
    if (!PyList_Check(ifdlist) ||
        !PyList_Check(ofdlist) ||
        !PyList_Check(efdlist))
    {
        PyErr_SetString(PyExc_TypeError,
                "arguments 1-3 must be lists");
        return NULL;
    }

#ifdef MS_WINDOWS
    /* Allocate memory for the lists */
    rfd2obj = PyMem_NEW(pylist, FD_SETSIZE + 3);
    wfd2obj = PyMem_NEW(pylist, FD_SETSIZE + 3);
    efd2obj = PyMem_NEW(pylist, FD_SETSIZE + 3);
    if (rfd2obj == NULL || wfd2obj == NULL || efd2obj == NULL) {
        if (rfd2obj) PyMem_DEL(rfd2obj);
        if (wfd2obj) PyMem_DEL(wfd2obj);
        if (efd2obj) PyMem_DEL(efd2obj);
        return NULL;
    }
#endif
    /* Convert lists to fd_sets, and get maximum fd number
     * propagates the Python exception set in list2set()
     */
    rfd2obj[0].sentinel = -1;
    wfd2obj[0].sentinel = -1;
    efd2obj[0].sentinel = -1;
    if ((imax=list2set(ifdlist, &ifdset, rfd2obj)) < 0)
        goto finally;
    if ((omax=list2set(ofdlist, &ofdset, wfd2obj)) < 0)
        goto finally;
    if ((emax=list2set(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

    if (n < 0) {
        PyErr_SetFromErrno(SelectError);
    }
    else if (n == 0) {
                /* optimization */
        ifdlist = PyList_New(0);
        if (ifdlist) {
            ret = Py_BuildValue("OOO", ifdlist, ifdlist, ifdlist);
            Py_DECREF(ifdlist);
        }
    }
    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 = Py_BuildValue("OOO", ifdlist, ofdlist, efdlist);

        Py_DECREF(ifdlist);
        Py_DECREF(ofdlist);
        Py_DECREF(efdlist);
    }

  finally:
    reap_obj(rfd2obj);
    reap_obj(wfd2obj);
    reap_obj(efd2obj);
#ifdef MS_WINDOWS
    PyMem_DEL(rfd2obj);
    PyMem_DEL(wfd2obj);
    PyMem_DEL(efd2obj);
#endif
    return ret;
}

#endif /* !AMITCP || INET225 */


#ifdef HAVE_POLL
/*
 * poll() support
 */

typedef struct {
    PyObject_HEAD
    PyObject *dict;
    int ufd_uptodate;
    int ufd_len;
        struct pollfd *ufds;
} pollObject;

staticforward 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)
{
    int i, j, pos;
    PyObject *key, *value;

    self->ufd_len = PyDict_Size(self->dict);
    PyMem_Resize(self->ufds, struct pollfd, self->ufd_len);
    if (self->ufds == NULL) {
        PyErr_NoMemory();
        return 0;
    }

    i = pos = 0;
    while ((j = PyDict_Next(self->dict, &pos, &key, &value))) {
        self->ufds[i].fd = PyInt_AsLong(key);
        self->ufds[i].events = PyInt_AsLong(value);
        i++;
    }
    self->ufd_uptodate = 1;
    return 1;
}

static char 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 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;

    if (!PyArg_ParseTuple(args, "O|i", &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. */
    if ( (NULL == (key = PyInt_FromLong(fd))) ||
         (NULL == (value = PyInt_FromLong(events))) ||
         (PyDict_SetItem(self->dict, key, value)) == -1) {
        return NULL;
    }
    self->ufd_uptodate = 0;

    Py_INCREF(Py_None);
    return Py_None;
}

static char 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 *args)
{
    PyObject *o, *key;
    int fd;

    if (!PyArg_ParseTuple(args, "O", &o)) {
        return NULL;
    }

    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;
}

static char 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_ParseTuple(args, "|O", &tout)) {
        return NULL;
    }

    /* Check values for timeout */
    if (tout == NULL || tout == Py_None)
        timeout = -1;
    else if (!PyArg_Parse(tout, "i", &timeout)) {
        PyErr_SetString(PyExc_TypeError,
                "timeout must be an integer or None");
        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);

            num = PyInt_FromLong(self->ufds[i].revents);
            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},
    {"unregister",    (PyCFunction)poll_unregister,
     METH_VARARGS,  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);
}

statichere PyTypeObject poll_Type = {
    /* The ob_type field must be initialized in the module init function
     * to be portable to Windows without using C++. */
    PyObject_HEAD_INIT(NULL)
    0,            /*ob_size*/
    "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*/
};

static char 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 *args)
{
    pollObject *rv;

    if (!PyArg_ParseTuple(args, ":poll"))
        return NULL;
    rv = newPollObject();
    if ( rv == NULL )
        return NULL;
    return (PyObject *)rv;
}
#endif /* HAVE_POLL */

static char 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 lists 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 descriptors.";

static PyMethodDef select_methods[] = {
    {"select",    select_select, METH_VARARGS, select_doc},
#ifdef HAVE_POLL
    {"poll",    select_poll,   METH_VARARGS, poll_doc},
#endif /* HAVE_POLL */
    {0,      0},                 /* sentinel */
};

static char 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.";

/*
 * Convenience routine to export an integer value.
 * For simplicity, errors (which are unlikely anyway) are ignored.
 */

static void
insint(PyObject *d, char *name, int value)
{
    PyObject *v = PyInt_FromLong((long) value);
    if (v == NULL) {
        /* Don't bother reporting this error */
        PyErr_Clear();
    }
    else {
        PyDict_SetItemString(d, name, v);
        Py_DECREF(v);
    }
}

DL_EXPORT(void)
initselect(void)
{
    PyObject *m, *d;
    m = Py_InitModule3("select", select_methods, module_doc);
    d = PyModule_GetDict(m);
    SelectError = PyErr_NewException("select.error", NULL, NULL);
    PyDict_SetItemString(d, "error", SelectError);
#ifdef HAVE_POLL
    poll_Type.ob_type = &PyType_Type;
    insint(d, "POLLIN", POLLIN);
    insint(d, "POLLPRI", POLLPRI);
    insint(d, "POLLOUT", POLLOUT);
    insint(d, "POLLERR", POLLERR);
    insint(d, "POLLHUP", POLLHUP);
    insint(d, "POLLNVAL", POLLNVAL);

#ifdef POLLRDNORM
    insint(d, "POLLRDNORM", POLLRDNORM);
#endif
#ifdef POLLRDBAND
    insint(d, "POLLRDBAND", POLLRDBAND);
#endif
#ifdef POLLWRNORM
    insint(d, "POLLWRNORM", POLLWRNORM);
#endif
#ifdef POLLWRBAND
    insint(d, "POLLWRBAND", POLLWRBAND);
#endif
#ifdef POLLMSG
    insint(d, "POLLMSG", POLLMSG);
#endif
#endif /* HAVE_POLL */
}