Mercurial > cpython-lru_cache-weakref

annotate Modules/_weakref.c @ 56121:ea697cde6882 3.1

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Merged revisions 74881-74885,74888,74891-74895,74900,74905-74906,74931-74932,74934,74941-74942,74944,74956 via svnmerge from svn+ssh://pythondev@svn.python.org/python/branches/py3k ........ r74881 | r.david.murray | 2009-09-17 15:12:49 -0400 (Thu, 17 Sep 2009) | 2 lines Check in first draft of maintainers.rst. ........ r74882 | eric.smith | 2009-09-17 15:22:30 -0400 (Thu, 17 Sep 2009) | 1 line Typo. ........ r74883 | mark.dickinson | 2009-09-17 15:37:28 -0400 (Thu, 17 Sep 2009) | 1 line Add some more module maintainers. ........ r74884 | mark.dickinson | 2009-09-17 15:39:12 -0400 (Thu, 17 Sep 2009) | 1 line Revert accidental changes to Objects/longobject.c ........ r74885 | mark.dickinson | 2009-09-17 16:20:01 -0400 (Thu, 17 Sep 2009) | 1 line Add decimal maintainers ........ r74888 | r.david.murray | 2009-09-17 18:10:48 -0400 (Thu, 17 Sep 2009) | 2 lines Maintainer additions from MAL. ........ r74891 | georg.brandl | 2009-09-17 18:18:01 -0400 (Thu, 17 Sep 2009) | 1 line Some more maintainers. ........ r74892 | r.david.murray | 2009-09-17 19:23:56 -0400 (Thu, 17 Sep 2009) | 2 lines Add a couple interest areas for Nick per his request. ........ r74893 | r.david.murray | 2009-09-17 19:43:20 -0400 (Thu, 17 Sep 2009) | 2 lines Benajmin is also compiler-knowledgeable. ........ r74894 | alexandre.vassalotti | 2009-09-17 20:59:05 -0400 (Thu, 17 Sep 2009) | 2 lines Added myself to my areas of interest. ........ r74895 | brett.cannon | 2009-09-17 21:03:35 -0400 (Thu, 17 Sep 2009) | 1 line Add myself to a couple places as maintainer. ........ r74900 | georg.brandl | 2009-09-18 05:06:37 -0400 (Fri, 18 Sep 2009) | 1 line Add myself in interest areas. ........ r74905 | ezio.melotti | 2009-09-18 05:58:43 -0400 (Fri, 18 Sep 2009) | 1 line Add myself in interest areas and mark effbot as inactive in winsound ........ r74906 | antoine.pitrou | 2009-09-18 09:15:23 -0400 (Fri, 18 Sep 2009) | 3 lines Add myself in a couple of places ........ r74931 | r.david.murray | 2009-09-18 17:25:36 -0400 (Fri, 18 Sep 2009) | 5 lines Add some names gleaned from the "Tracker Archeology" thread on python-dev from back in February. Also consolidate the autoconf and makefiles topics into one, and add tracker and svn/hg topics. ........ r74932 | r.david.murray | 2009-09-18 17:32:16 -0400 (Fri, 18 Sep 2009) | 2 lines Remove non-committer mistakenly added. ........ r74934 | r.david.murray | 2009-09-18 17:40:30 -0400 (Fri, 18 Sep 2009) | 2 lines More descriptive/generic name for the svn/hg entry (version control) ........ r74941 | benjamin.peterson | 2009-09-18 18:45:59 -0400 (Fri, 18 Sep 2009) | 1 line add a new category for myself ........ r74942 | benjamin.peterson | 2009-09-18 18:50:55 -0400 (Fri, 18 Sep 2009) | 1 line add myself for symtable ........ r74944 | georg.brandl | 2009-09-19 03:39:05 -0400 (Sat, 19 Sep 2009) | 1 line I would like to maintain the token module! ........ r74956 | r.david.murray | 2009-09-19 14:40:08 -0400 (Sat, 19 Sep 2009) | 3 lines Add everyone who we know has been a release manager as a resource for the 'release management' topic. ........
author R. David Murray <rdmurray@bitdance.com>
date Sat, 19 Sep 2009 19:04:37 +0000
parents 94f64f11fdd0
children 8fde1a2c94dc
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1 #include "Python.h"
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2
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3
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4 #define GET_WEAKREFS_LISTPTR(o) \
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5 ((PyWeakReference **) PyObject_GET_WEAKREFS_LISTPTR(o))
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8 PyDoc_STRVAR(weakref_getweakrefcount__doc__,
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9 "getweakrefcount(object) -- return the number of weak references\n"
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10 "to 'object'.");
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12 static PyObject *
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13 weakref_getweakrefcount(PyObject *self, PyObject *object)
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14 {
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15 PyObject *result = NULL;
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17 if (PyType_SUPPORTS_WEAKREFS(Py_TYPE(object))) {
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18 PyWeakReference **list = GET_WEAKREFS_LISTPTR(object);
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20 result = PyLong_FromSsize_t(_PyWeakref_GetWeakrefCount(*list));
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21 }
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22 else
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23 result = PyLong_FromLong(0);
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25 return result;
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26 }
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29 PyDoc_STRVAR(weakref_getweakrefs__doc__,
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30 "getweakrefs(object) -- return a list of all weak reference objects\n"
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31 "that point to 'object'.");
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33 static PyObject *
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34 weakref_getweakrefs(PyObject *self, PyObject *object)
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35 {
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36 PyObject *result = NULL;
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38 if (PyType_SUPPORTS_WEAKREFS(Py_TYPE(object))) {
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39 PyWeakReference **list = GET_WEAKREFS_LISTPTR(object);
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40 Py_ssize_t count = _PyWeakref_GetWeakrefCount(*list);
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42 result = PyList_New(count);
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43 if (result != NULL) {
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44 PyWeakReference *current = *list;
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45 Py_ssize_t i;
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46 for (i = 0; i < count; ++i) {
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47 PyList_SET_ITEM(result, i, (PyObject *) current);
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48 Py_INCREF(current);
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49 current = current->wr_next;
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53 else {
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54 result = PyList_New(0);
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55 }
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56 return result;
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57 }
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58
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60 PyDoc_STRVAR(weakref_proxy__doc__,
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61 "proxy(object[, callback]) -- create a proxy object that weakly\n"
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62 "references 'object'. 'callback', if given, is called with a\n"
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63 "reference to the proxy when 'object' is about to be finalized.");
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65 static PyObject *
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66 weakref_proxy(PyObject *self, PyObject *args)
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67 {
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68 PyObject *object;
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69 PyObject *callback = NULL;
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70 PyObject *result = NULL;
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72 if (PyArg_UnpackTuple(args, "proxy", 1, 2, &object, &callback)) {
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73 result = PyWeakref_NewProxy(object, callback);
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74 }
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75 return result;
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76 }
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79 static PyMethodDef
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80 weakref_functions[] = {
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81 {"getweakrefcount", weakref_getweakrefcount, METH_O,
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82 weakref_getweakrefcount__doc__},
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83 {"getweakrefs", weakref_getweakrefs, METH_O,
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84 weakref_getweakrefs__doc__},
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85 {"proxy", weakref_proxy, METH_VARARGS,
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86 weakref_proxy__doc__},
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87 {NULL, NULL, 0, NULL}
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88 };
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89
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91 static struct PyModuleDef weakrefmodule = {
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92 PyModuleDef_HEAD_INIT,
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93 "_weakref",
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94 "Weak-reference support module.",
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95 -1,
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96 weakref_functions,
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97 NULL,
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98 NULL,
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99 NULL,
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100 NULL
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101 };
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102
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103 PyMODINIT_FUNC
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104 PyInit__weakref(void)
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105 {
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106 PyObject *m;
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107
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108 m = PyModule_Create(&weakrefmodule);
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109
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110 if (m != NULL) {
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111 Py_INCREF(&_PyWeakref_RefType);
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112 PyModule_AddObject(m, "ref",
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113 (PyObject *) &_PyWeakref_RefType);
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114 Py_INCREF(&_PyWeakref_RefType);
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115 PyModule_AddObject(m, "ReferenceType",
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116 (PyObject *) &_PyWeakref_RefType);
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117 Py_INCREF(&_PyWeakref_ProxyType);
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118 PyModule_AddObject(m, "ProxyType",
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Fred Drake <fdrake@acm.org>
parents: 19581
diff changeset
119 (PyObject *) &_PyWeakref_ProxyType);
ccb7abc714ed Adjust the _weakref module to use the public API for the weak reference
Fred Drake <fdrake@acm.org>
parents: 19581
diff changeset
120 Py_INCREF(&_PyWeakref_CallableProxyType);
16385
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
121 PyModule_AddObject(m, "CallableProxyType",
20285
ccb7abc714ed Adjust the _weakref module to use the public API for the weak reference
Fred Drake <fdrake@acm.org>
parents: 19581
diff changeset
122 (PyObject *) &_PyWeakref_CallableProxyType);
16385
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
123 }
47580
94f64f11fdd0 Implement PEP 3121: new module initialization and finalization API.
Martin v. Löwis <martin@v.loewis.de>
parents: 44351
diff changeset
124 return m;
16385
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
125 }