1  /*[clinic input]
       2  preserve
       3  [clinic start generated code]*/
       4  
       5  #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
       6  #  include "pycore_gc.h"            // PyGC_Head
       7  #  include "pycore_runtime.h"       // _Py_ID()
       8  #endif
       9  
      10  
      11  PyDoc_STRVAR(_weakref_getweakrefcount__doc__,
      12  "getweakrefcount($module, object, /)\n"
      13  "--\n"
      14  "\n"
      15  "Return the number of weak references to \'object\'.");
      16  
      17  #define _WEAKREF_GETWEAKREFCOUNT_METHODDEF    \
      18      {"getweakrefcount", (PyCFunction)_weakref_getweakrefcount, METH_O, _weakref_getweakrefcount__doc__},
      19  
      20  static Py_ssize_t
      21  _weakref_getweakrefcount_impl(PyObject *module, PyObject *object);
      22  
      23  static PyObject *
      24  _weakref_getweakrefcount(PyObject *module, PyObject *object)
      25  {
      26      PyObject *return_value = NULL;
      27      Py_ssize_t _return_value;
      28  
      29      _return_value = _weakref_getweakrefcount_impl(module, object);
      30      if ((_return_value == -1) && PyErr_Occurred()) {
      31          goto exit;
      32      }
      33      return_value = PyLong_FromSsize_t(_return_value);
      34  
      35  exit:
      36      return return_value;
      37  }
      38  
      39  PyDoc_STRVAR(_weakref__remove_dead_weakref__doc__,
      40  "_remove_dead_weakref($module, dct, key, /)\n"
      41  "--\n"
      42  "\n"
      43  "Atomically remove key from dict if it points to a dead weakref.");
      44  
      45  #define _WEAKREF__REMOVE_DEAD_WEAKREF_METHODDEF    \
      46      {"_remove_dead_weakref", _PyCFunction_CAST(_weakref__remove_dead_weakref), METH_FASTCALL, _weakref__remove_dead_weakref__doc__},
      47  
      48  static PyObject *
      49  _weakref__remove_dead_weakref_impl(PyObject *module, PyObject *dct,
      50                                     PyObject *key);
      51  
      52  static PyObject *
      53  _weakref__remove_dead_weakref(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
      54  {
      55      PyObject *return_value = NULL;
      56      PyObject *dct;
      57      PyObject *key;
      58  
      59      if (!_PyArg_CheckPositional("_remove_dead_weakref", nargs, 2, 2)) {
      60          goto exit;
      61      }
      62      if (!PyDict_Check(args[0])) {
      63          _PyArg_BadArgument("_remove_dead_weakref", "argument 1", "dict", args[0]);
      64          goto exit;
      65      }
      66      dct = args[0];
      67      key = args[1];
      68      return_value = _weakref__remove_dead_weakref_impl(module, dct, key);
      69  
      70  exit:
      71      return return_value;
      72  }
      73  
      74  PyDoc_STRVAR(_weakref_getweakrefs__doc__,
      75  "getweakrefs($module, object, /)\n"
      76  "--\n"
      77  "\n"
      78  "Return a list of all weak reference objects pointing to \'object\'.");
      79  
      80  #define _WEAKREF_GETWEAKREFS_METHODDEF    \
      81      {"getweakrefs", (PyCFunction)_weakref_getweakrefs, METH_O, _weakref_getweakrefs__doc__},
      82  
      83  PyDoc_STRVAR(_weakref_proxy__doc__,
      84  "proxy($module, object, callback=None, /)\n"
      85  "--\n"
      86  "\n"
      87  "Create a proxy object that weakly references \'object\'.\n"
      88  "\n"
      89  "\'callback\', if given, is called with a reference to the\n"
      90  "proxy when \'object\' is about to be finalized.");
      91  
      92  #define _WEAKREF_PROXY_METHODDEF    \
      93      {"proxy", _PyCFunction_CAST(_weakref_proxy), METH_FASTCALL, _weakref_proxy__doc__},
      94  
      95  static PyObject *
      96  _weakref_proxy_impl(PyObject *module, PyObject *object, PyObject *callback);
      97  
      98  static PyObject *
      99  _weakref_proxy(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     100  {
     101      PyObject *return_value = NULL;
     102      PyObject *object;
     103      PyObject *callback = NULL;
     104  
     105      if (!_PyArg_CheckPositional("proxy", nargs, 1, 2)) {
     106          goto exit;
     107      }
     108      object = args[0];
     109      if (nargs < 2) {
     110          goto skip_optional;
     111      }
     112      callback = args[1];
     113  skip_optional:
     114      return_value = _weakref_proxy_impl(module, object, callback);
     115  
     116  exit:
     117      return return_value;
     118  }
     119  /*[clinic end generated code: output=28265e89d583273d input=a9049054013a1b77]*/