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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137:
138:
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169: cdef dict _ares_to_gai_system = {
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177: # While EAI_NODATA ("No address associated with nodename") might
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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182: # This one gets raised for unknown port/service names.
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184: }
185:
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339:
340:
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/* … */
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/* … */
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616: cdef int _convert_cares_ai_flags(int flags):
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619: # c-ares will not connect to resolved addresses.
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/* … */
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626:
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628: cdef void _getaddrinfo_cb(void *arg,
629: int status,
630: int timeouts,
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632: cdef cares.ares_addrinfo_node* nodes
633: cdef cares.ares_addrinfo_cname* cnames
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653: # (address, port, flow info, scope id)
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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
665: #
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678: INET6_ADDRSTRLEN)
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711: object callback,
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:
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+719: raise gaierror(cares.ARES_EDESTRUCTION, 'this ares channel has been destroyed')
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720:
721: cdef cares.ares_addrinfo_hints hints
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(void)(memset((&__pyx_v_hints), 0, (sizeof(struct ares_addrinfo_hints))));
723:
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+726: hints.ai_socktype = type
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+727: hints.ai_protocol = proto
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730:
+731: cares.ares_getaddrinfo(
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732: self.channel,
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735: &hints,
736: <void*>channel._getaddrinfo_cb,
737: <void*>arg
738: )