text: /**
   *
   * \file fd_poller.c
   * @brief pygetdns support for file descriptor polling
   *
   */
  
  
  /*
   * Copyright (c) 2014, Verisign, Inc.
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are met:
   * * Redistributions of source code must retain the above copyright
   * notice, this list of conditions and the following disclaimer.
   * * 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.
   * * Neither the name of the <organization> nor the
   * names of its contributors may be used to endorse or promote products
   * derived from this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 Verisign, Include. 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.
   */
  
  
  
  #include <Python.h>
  #include <arpa/inet.h>
  #include <stdio.h>
  #include <string.h>
  #include <getdns/getdns.h>
  #include <getdns/getdns_ext_libevent.h>
  #include <event2/event.h>
  #include "pygetdns.h"
  
  
  PyObject *
  context_fd(PyObject *self, PyObject *args, PyObject *keywds)
  {
      static char *kwlist[] = {
          "context",
          0
      };
  
      PyObject *context_capsule;
      struct getdns_context *context;
      int  fd;
      FILE *t;
  
      if (!PyArg_ParseTupleAndKeywords(args, keywds, "O", kwlist,
                                       &context_capsule))  {
          PyErr_SetString(getdns_error, GETDNS_RETURN_INVALID_PARAMETER_TEXT);
          return NULL;
      }
      context = PyCapsule_GetPointer(context_capsule, "context");
      if ((fd = getdns_context_fd(context)) < 0)  {
          PyErr_SetString(getdns_error, GETDNS_RETURN_INVALID_PARAMETER_TEXT);
          return NULL;
      }
      if ((t = fdopen(fd, "r")) == NULL)  {
          PyErr_SetString(getdns_error, GETDNS_RETURN_GENERIC_ERROR_TEXT);
          return NULL;
      }
      return (PyFile_FromFile(t, "<context>", "r", NULL));
  }
  
  
  PyObject *
  context_get_num_pending_requests(PyObject *self, PyObject *args, PyObject *keywds)
  {
      static char *kwlist[] = {
          "context",
          "timeout",
          0
      };
  
      PyObject *context_capsule;
      struct getdns_context *context;
      uint64_t timeout = 0;
      struct timeval tv;
  
      if (!PyArg_ParseTupleAndKeywords(args, keywds, "O|L", kwlist,
                                       &context_capsule, &timeout))  {
          PyErr_SetString(getdns_error, GETDNS_RETURN_INVALID_PARAMETER_TEXT);
          return NULL;
      }
      context = PyCapsule_GetPointer(context_capsule, "context");
      if (timeout)  {
          tv.tv_sec = timeout / 1000; /* timeout is expressed in milliseconds */
          tv.tv_usec = (timeout % 1000) * 1000;
      }
      return (PyInt_FromLong((long)getdns_context_get_num_pending_requests(context, &tv)));
  }
      
  
  PyObject *
  context_process_async(PyObject *self, PyObject *args, PyObject *keywds)
  {
      static char *kwlist[] = {
          "context",
          0
      };
  
      PyObject *context_capsule;
      struct getdns_context *context;
      getdns_return_t ret;
      char err_buf[256];
  
      if (!PyArg_ParseTupleAndKeywords(args, keywds, "O", kwlist,
                                       &context_capsule))  {
          PyErr_SetString(getdns_error, GETDNS_RETURN_INVALID_PARAMETER_TEXT);
          return NULL;
      }
      context = PyCapsule_GetPointer(context_capsule, "context");
      if ((ret = getdns_context_process_async(context)) != GETDNS_RETURN_GOOD)  {
          getdns_strerror(ret, err_buf, sizeof err_buf);
          PyErr_SetString(getdns_error, err_buf);
          return NULL;
      }
      return Py_None;
  }
  