Generated by Cython 3.1.0

Yellow lines hint at Python interaction.
Click on a line that starts with a "+" to see the C code that Cython generated for it.

Raw output: cares.c

+001: # Copyright (c) 2011-2012 Denis Bilenko. See LICENSE for details.
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 002: # Automatic pickling of cdef classes was added in 0.26. Unfortunately it
 003: # seems to be buggy (at least for the `result` class) and produces code that
 004: # can't compile ("local variable 'result' referenced before assignment").
 005: # See https://github.com/cython/cython/issues/1786
 006: # cython: auto_pickle=False,language_level=3str
 007: cimport libcares as cares
+008: import sys
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 009: 
 010: from cpython.version cimport PY_MAJOR_VERSION
 011: from cpython.tuple cimport PyTuple_Check
 012: from cpython.getargs cimport PyArg_ParseTuple
 013: from cpython.ref cimport Py_INCREF
 014: from cpython.ref cimport Py_DECREF
 015: from cpython.mem cimport PyMem_Malloc
 016: from cpython.mem cimport PyMem_Free
 017: from libc.string cimport memset
 018: 
+019: from gevent._compat import MAC
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 020: 
+021: import _socket
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+022: from _socket import gaierror
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+023: from _socket import herror
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 024: 
 025: 
+026: __all__ = ['channel']
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 027: 
 028: 
 029: # These three constants used to be DEF, but the DEF construct
 030: # is deprecated in Cython. Using a cdef extern, the generated
 031: # C code refers to the symbol (DEF would have inlined the value).
 032: # That's great when we're strictly in a C context, but for passing to
 033: # Python, it means we do a runtime translation from the C int to the
 034: # Python int. That is avoided if we use a cdef constant. TIMEOUT
 035: # is the only one that interacts with Python, but not in a performance-sensitive
 036: # way, so runtime translation is fine to keep it consistent.
 037: cdef extern from *:
 038:     """
 039:     #define TIMEOUT 1
 040:     #define EV_READ 1
 041:     #define EV_WRITE 2
 042:     """
 043:     int TIMEOUT
 044:     int EV_READ
 045:     int EV_WRITE
 046: 
 047: 
 048: cdef extern from *:
 049:     """
 050: #ifdef CARES_EMBED
 051: #include "ares_setup.h"
 052: #endif
 053: 
 054: #ifdef HAVE_NETDB_H
 055: #include <netdb.h>
 056: #endif
 057: 
 058:     #ifndef EAI_ADDRFAMILY
 059:     #define EAI_ADDRFAMILY -1
 060:     #endif
 061: 
 062:     #ifndef EAI_BADHINTS
 063:     #define EAI_BADHINTS -2
 064:     #endif
 065: 
 066:     #ifndef EAI_NODATA
 067:     #define EAI_NODATA -3
 068:     #endif
 069: 
 070:     #ifndef EAI_OVERFLOW
 071:     #define EAI_OVERFLOW -4
 072:     #endif
 073: 
 074:     #ifndef EAI_PROTOCOL
 075:     #define EAI_PROTOCOL -5
 076:     #endif
 077: 
 078:     #ifndef EAI_SYSTEM
 079:     #define EAI_SYSTEM
 080:     #endif
 081: #if defined(WIN32) || defined(_WIN32)
 082:     static const char * hstrerror(int err)
 083:     {
 084:         return NULL;
 085:     }
 086: #endif
 087:     """
 088: 
 089: cdef extern from "ares.h":
 090:     int AF_INET
 091:     int AF_INET6
 092:     int INET6_ADDRSTRLEN
 093: 
 094:     struct hostent:
 095:         char* h_name
 096:         int h_addrtype
 097:         char** h_aliases
 098:         char** h_addr_list
 099: 
 100:     struct sockaddr_t "sockaddr":
 101:         pass
 102: 
 103:     struct ares_channeldata:
 104:         pass
 105: 
 106:     struct in_addr:
 107:         unsigned int s_addr
 108: 
 109:     struct sockaddr_in:
 110:         int sin_family
 111:         int sin_port
 112:         in_addr sin_addr
 113: 
 114:     struct in6_addr:
 115:         char s6_addr[16]
 116: 
 117:     struct sockaddr_in6:
 118:         int sin6_family
 119:         int sin6_port
 120:         unsigned int sin6_flowinfo
 121:         in6_addr sin6_addr
 122:         unsigned int sin6_scope_id
 123: 
 124: 
 125:     unsigned int htons(unsigned int hostshort)
 126:     unsigned int ntohs(unsigned int hostshort)
 127:     unsigned int htonl(unsigned int hostlong)
 128:     unsigned int ntohl(unsigned int hostlong)
 129: 
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 169: cdef dict _ares_to_gai_system = {
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 178:     # seem to be the natural mapping, typical resolvers actually
 179:     # return EAI_NONAME in that same situation; I've yet to find EAI_NODATA
 180:     # in a test.
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 362:     cdef dict _watchers
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+615:     @staticmethod
static int __pyx_f_6gevent_8resolver_5cares_7channel__convert_cares_ai_flags(int __pyx_v_flags) {
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/* … */
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 619:         # c-ares will not connect to resolved addresses.
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/* … */
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/* … */
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 626: 
+627:     @staticmethod
static void __pyx_f_6gevent_8resolver_5cares_7channel__getaddrinfo_cb(void *__pyx_v_arg, int __pyx_v_status, CYTHON_UNUSED int __pyx_v_timeouts, struct ares_addrinfo *__pyx_v_result) {
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 628:     cdef void _getaddrinfo_cb(void *arg,
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 630:                               int timeouts,
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 633:         cdef cares.ares_addrinfo_cname* cnames
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 637: 
 638:         cdef channel channel
 639:         cdef object callback
 640:         # INET6_ADDRSTRLEN is 46, but we can't use that named constant
 641:         # here; cython doesn't like it.
 642:         cdef char tmpbuf[46]
 643: 
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+645:         Py_DECREF(<tuple>arg)
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 646: 
 647: 
 648:         # Result is a list of:
 649:         # (family, socktype, proto, canonname, sockaddr)
 650:         # Where sockaddr depends on family; for INET it is
 651:         # (address, port)
 652:         # and INET6 is
 653:         # (address, port, flow info, scope id)
 654:         # TODO: Check the canonnames.
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+657:             if status != cares.ARES_SUCCESS:
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/* … */
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/* … */
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 661:                 # These tend to come in pairs:
 662:                 #
 663:                 # alias: www.gevent.org name: python-gevent.readthedocs.org
 664:                 # alias: python-gevent.readthedocs.org name: readthedocs.io
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 678:                                             INET6_ADDRSTRLEN)
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 712:                     const char* name,
 713:                     object service, # AKA port
 714:                     int family=0,
 715:                     int type=0,
 716:                     int proto=0,
 717:                     int flags=0):
+718:         if not self.channel:
  __pyx_t_1 = (!(__pyx_v_self->channel != 0));
  if (unlikely(__pyx_t_1)) {
/* … */
  }
+719:             raise gaierror(cares.ARES_EDESTRUCTION, 'this ares channel has been destroyed')
    __pyx_t_3 = NULL;
    __Pyx_GetModuleGlobalName(__pyx_t_4, __pyx_mstate_global->__pyx_n_u_gaierror); if (unlikely(!__pyx_t_4)) __PYX_ERR(0, 719, __pyx_L1_error)
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    __pyx_t_5 = __Pyx_PyLong_From_int(ARES_EDESTRUCTION); if (unlikely(!__pyx_t_5)) __PYX_ERR(0, 719, __pyx_L1_error)
    __Pyx_GOTREF(__pyx_t_5);
    __pyx_t_6 = 1;
    #if CYTHON_UNPACK_METHODS
    if (unlikely(PyMethod_Check(__pyx_t_4))) {
      __pyx_t_3 = PyMethod_GET_SELF(__pyx_t_4);
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    #endif
    {
      PyObject *__pyx_callargs[3] = {__pyx_t_3, __pyx_t_5, __pyx_mstate_global->__pyx_kp_u_this_ares_channel_has_been_destr};
      __pyx_t_2 = __Pyx_PyObject_FastCall(__pyx_t_4, __pyx_callargs+__pyx_t_6, (3-__pyx_t_6) | (__pyx_t_6*__Pyx_PY_VECTORCALL_ARGUMENTS_OFFSET));
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      __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
      if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 719, __pyx_L1_error)
      __Pyx_GOTREF(__pyx_t_2);
    }
    __Pyx_Raise(__pyx_t_2, 0, 0, 0);
    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
    __PYX_ERR(0, 719, __pyx_L1_error)
 720: 
 721:         cdef cares.ares_addrinfo_hints hints
+722:         memset(&hints, 0, sizeof(cares.ares_addrinfo_hints))
  (void)(memset((&__pyx_v_hints), 0, (sizeof(struct ares_addrinfo_hints))));
 723: 
+724:         hints.ai_flags = channel._convert_cares_ai_flags(flags)
  __pyx_t_7 = __pyx_f_6gevent_8resolver_5cares_7channel__convert_cares_ai_flags(__pyx_v_flags); if (unlikely(PyErr_Occurred())) __PYX_ERR(0, 724, __pyx_L1_error)
  __pyx_v_hints.ai_flags = __pyx_t_7;
+725:         hints.ai_family = family
  __pyx_v_hints.ai_family = __pyx_v_family;
+726:         hints.ai_socktype = type
  __pyx_v_hints.ai_socktype = __pyx_v_type;
+727:         hints.ai_protocol = proto
  __pyx_v_hints.ai_protocol = __pyx_v_proto;
+728:         cdef object arg = (self, callback)
  __pyx_t_2 = PyTuple_New(2); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 728, __pyx_L1_error)
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  __Pyx_INCREF((PyObject *)__pyx_v_self);
  __Pyx_GIVEREF((PyObject *)__pyx_v_self);
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  if (__Pyx_PyTuple_SET_ITEM(__pyx_t_2, 1, __pyx_v_callback) != (0)) __PYX_ERR(0, 728, __pyx_L1_error);
  __pyx_v_arg = __pyx_t_2;
  __pyx_t_2 = 0;
+729:         Py_INCREF(arg)
  Py_INCREF(__pyx_v_arg);
 730: 
+731:         cares.ares_getaddrinfo(
  ares_getaddrinfo(__pyx_v_self->channel, __pyx_v_name, __pyx_t_8, (&__pyx_v_hints), ((void *)__pyx_f_6gevent_8resolver_5cares_7channel__getaddrinfo_cb), ((void *)__pyx_v_arg));
 732:             self.channel,
 733:             name,
+734:             NULL if service is None else <char*>service,
  __pyx_t_1 = (__pyx_v_service == Py_None);
  if (__pyx_t_1) {
    __pyx_t_8 = NULL;
  } else {
    __pyx_t_9 = __Pyx_PyObject_AsWritableString(__pyx_v_service); if (unlikely((!__pyx_t_9) && PyErr_Occurred())) __PYX_ERR(0, 734, __pyx_L1_error)
    __pyx_t_8 = ((char *)__pyx_t_9);
  }
 735:             &hints,
 736:             <void*>channel._getaddrinfo_cb,
 737:             <void*>arg
 738:         )