Eric Snow | c11183c | 2019-03-15 16:35:46 -0600 | [diff] [blame] | 1 | /* InterpreterID object */ |
| 2 | |
| 3 | #include "Python.h" |
| 4 | #include "internal/pycore_pystate.h" |
| 5 | #include "interpreteridobject.h" |
| 6 | |
| 7 | |
Eric Snow | c11183c | 2019-03-15 16:35:46 -0600 | [diff] [blame] | 8 | typedef struct interpid { |
| 9 | PyObject_HEAD |
| 10 | int64_t id; |
| 11 | } interpid; |
| 12 | |
| 13 | static interpid * |
| 14 | newinterpid(PyTypeObject *cls, int64_t id, int force) |
| 15 | { |
| 16 | PyInterpreterState *interp = _PyInterpreterState_LookUpID(id); |
| 17 | if (interp == NULL) { |
| 18 | if (force) { |
| 19 | PyErr_Clear(); |
| 20 | } |
| 21 | else { |
| 22 | return NULL; |
| 23 | } |
| 24 | } |
| 25 | |
| 26 | interpid *self = PyObject_New(interpid, cls); |
| 27 | if (self == NULL) { |
| 28 | return NULL; |
| 29 | } |
| 30 | self->id = id; |
| 31 | |
| 32 | if (interp != NULL) { |
| 33 | _PyInterpreterState_IDIncref(interp); |
| 34 | } |
| 35 | return self; |
| 36 | } |
| 37 | |
Miss Islington (bot) | ca14f04 | 2019-09-25 08:56:05 -0700 | [diff] [blame^] | 38 | static int |
| 39 | interp_id_converter(PyObject *arg, void *ptr) |
| 40 | { |
| 41 | int64_t id; |
| 42 | if (PyObject_TypeCheck(arg, &_PyInterpreterID_Type)) { |
| 43 | id = ((interpid *)arg)->id; |
| 44 | } |
| 45 | else if (PyIndex_Check(arg)) { |
| 46 | id = PyLong_AsLongLong(arg); |
| 47 | if (id == -1 && PyErr_Occurred()) { |
| 48 | return 0; |
| 49 | } |
| 50 | if (id < 0) { |
| 51 | PyErr_Format(PyExc_ValueError, |
| 52 | "interpreter ID must be a non-negative int, got %R", arg); |
| 53 | return 0; |
| 54 | } |
| 55 | } |
| 56 | else { |
| 57 | PyErr_Format(PyExc_TypeError, |
| 58 | "interpreter ID must be an int, got %.100s", |
| 59 | arg->ob_type->tp_name); |
| 60 | return 0; |
| 61 | } |
| 62 | *(int64_t *)ptr = id; |
| 63 | return 1; |
| 64 | } |
| 65 | |
Eric Snow | c11183c | 2019-03-15 16:35:46 -0600 | [diff] [blame] | 66 | static PyObject * |
| 67 | interpid_new(PyTypeObject *cls, PyObject *args, PyObject *kwds) |
| 68 | { |
| 69 | static char *kwlist[] = {"id", "force", NULL}; |
Miss Islington (bot) | ca14f04 | 2019-09-25 08:56:05 -0700 | [diff] [blame^] | 70 | int64_t id; |
Eric Snow | c11183c | 2019-03-15 16:35:46 -0600 | [diff] [blame] | 71 | int force = 0; |
| 72 | if (!PyArg_ParseTupleAndKeywords(args, kwds, |
Miss Islington (bot) | ca14f04 | 2019-09-25 08:56:05 -0700 | [diff] [blame^] | 73 | "O&|$p:InterpreterID.__init__", kwlist, |
| 74 | interp_id_converter, &id, &force)) { |
Eric Snow | c11183c | 2019-03-15 16:35:46 -0600 | [diff] [blame] | 75 | return NULL; |
| 76 | } |
| 77 | |
Eric Snow | c11183c | 2019-03-15 16:35:46 -0600 | [diff] [blame] | 78 | return (PyObject *)newinterpid(cls, id, force); |
| 79 | } |
| 80 | |
| 81 | static void |
| 82 | interpid_dealloc(PyObject *v) |
| 83 | { |
| 84 | int64_t id = ((interpid *)v)->id; |
| 85 | PyInterpreterState *interp = _PyInterpreterState_LookUpID(id); |
| 86 | if (interp != NULL) { |
| 87 | _PyInterpreterState_IDDecref(interp); |
| 88 | } |
| 89 | else { |
| 90 | // already deleted |
| 91 | PyErr_Clear(); |
| 92 | } |
| 93 | Py_TYPE(v)->tp_free(v); |
| 94 | } |
| 95 | |
| 96 | static PyObject * |
| 97 | interpid_repr(PyObject *self) |
| 98 | { |
| 99 | PyTypeObject *type = Py_TYPE(self); |
| 100 | const char *name = _PyType_Name(type); |
| 101 | interpid *id = (interpid *)self; |
| 102 | return PyUnicode_FromFormat("%s(%" PRId64 ")", name, id->id); |
| 103 | } |
| 104 | |
| 105 | static PyObject * |
| 106 | interpid_str(PyObject *self) |
| 107 | { |
| 108 | interpid *id = (interpid *)self; |
| 109 | return PyUnicode_FromFormat("%" PRId64 "", id->id); |
| 110 | } |
| 111 | |
| 112 | static PyObject * |
| 113 | interpid_int(PyObject *self) |
| 114 | { |
| 115 | interpid *id = (interpid *)self; |
| 116 | return PyLong_FromLongLong(id->id); |
| 117 | } |
| 118 | |
| 119 | static PyNumberMethods interpid_as_number = { |
| 120 | 0, /* nb_add */ |
| 121 | 0, /* nb_subtract */ |
| 122 | 0, /* nb_multiply */ |
| 123 | 0, /* nb_remainder */ |
| 124 | 0, /* nb_divmod */ |
| 125 | 0, /* nb_power */ |
| 126 | 0, /* nb_negative */ |
| 127 | 0, /* nb_positive */ |
| 128 | 0, /* nb_absolute */ |
| 129 | 0, /* nb_bool */ |
| 130 | 0, /* nb_invert */ |
| 131 | 0, /* nb_lshift */ |
| 132 | 0, /* nb_rshift */ |
| 133 | 0, /* nb_and */ |
| 134 | 0, /* nb_xor */ |
| 135 | 0, /* nb_or */ |
| 136 | (unaryfunc)interpid_int, /* nb_int */ |
| 137 | 0, /* nb_reserved */ |
| 138 | 0, /* nb_float */ |
| 139 | |
| 140 | 0, /* nb_inplace_add */ |
| 141 | 0, /* nb_inplace_subtract */ |
| 142 | 0, /* nb_inplace_multiply */ |
| 143 | 0, /* nb_inplace_remainder */ |
| 144 | 0, /* nb_inplace_power */ |
| 145 | 0, /* nb_inplace_lshift */ |
| 146 | 0, /* nb_inplace_rshift */ |
| 147 | 0, /* nb_inplace_and */ |
| 148 | 0, /* nb_inplace_xor */ |
| 149 | 0, /* nb_inplace_or */ |
| 150 | |
| 151 | 0, /* nb_floor_divide */ |
| 152 | 0, /* nb_true_divide */ |
| 153 | 0, /* nb_inplace_floor_divide */ |
| 154 | 0, /* nb_inplace_true_divide */ |
| 155 | |
| 156 | (unaryfunc)interpid_int, /* nb_index */ |
| 157 | }; |
| 158 | |
| 159 | static Py_hash_t |
| 160 | interpid_hash(PyObject *self) |
| 161 | { |
| 162 | interpid *id = (interpid *)self; |
| 163 | PyObject *obj = PyLong_FromLongLong(id->id); |
| 164 | if (obj == NULL) { |
| 165 | return -1; |
| 166 | } |
| 167 | Py_hash_t hash = PyObject_Hash(obj); |
| 168 | Py_DECREF(obj); |
| 169 | return hash; |
| 170 | } |
| 171 | |
| 172 | static PyObject * |
| 173 | interpid_richcompare(PyObject *self, PyObject *other, int op) |
| 174 | { |
| 175 | if (op != Py_EQ && op != Py_NE) { |
| 176 | Py_RETURN_NOTIMPLEMENTED; |
| 177 | } |
| 178 | |
| 179 | if (!PyObject_TypeCheck(self, &_PyInterpreterID_Type)) { |
| 180 | Py_RETURN_NOTIMPLEMENTED; |
| 181 | } |
| 182 | |
| 183 | interpid *id = (interpid *)self; |
| 184 | int equal; |
| 185 | if (PyObject_TypeCheck(other, &_PyInterpreterID_Type)) { |
| 186 | interpid *otherid = (interpid *)other; |
| 187 | equal = (id->id == otherid->id); |
| 188 | } |
Serhiy Storchaka | f37a983 | 2019-09-14 19:36:19 +0300 | [diff] [blame] | 189 | else if (PyLong_CheckExact(other)) { |
| 190 | /* Fast path */ |
| 191 | int overflow; |
| 192 | long long otherid = PyLong_AsLongLongAndOverflow(other, &overflow); |
| 193 | if (otherid == -1 && PyErr_Occurred()) { |
Eric Snow | c11183c | 2019-03-15 16:35:46 -0600 | [diff] [blame] | 194 | return NULL; |
| 195 | } |
Serhiy Storchaka | f37a983 | 2019-09-14 19:36:19 +0300 | [diff] [blame] | 196 | equal = !overflow && (otherid >= 0) && (id->id == otherid); |
| 197 | } |
| 198 | else if (PyNumber_Check(other)) { |
| 199 | PyObject *pyid = PyLong_FromLongLong(id->id); |
| 200 | if (pyid == NULL) { |
| 201 | return NULL; |
Eric Snow | c11183c | 2019-03-15 16:35:46 -0600 | [diff] [blame] | 202 | } |
Serhiy Storchaka | f37a983 | 2019-09-14 19:36:19 +0300 | [diff] [blame] | 203 | PyObject *res = PyObject_RichCompare(pyid, other, op); |
| 204 | Py_DECREF(pyid); |
| 205 | return res; |
| 206 | } |
| 207 | else { |
| 208 | Py_RETURN_NOTIMPLEMENTED; |
Eric Snow | c11183c | 2019-03-15 16:35:46 -0600 | [diff] [blame] | 209 | } |
| 210 | |
| 211 | if ((op == Py_EQ && equal) || (op == Py_NE && !equal)) { |
| 212 | Py_RETURN_TRUE; |
| 213 | } |
| 214 | Py_RETURN_FALSE; |
| 215 | } |
| 216 | |
| 217 | PyDoc_STRVAR(interpid_doc, |
| 218 | "A interpreter ID identifies a interpreter and may be used as an int."); |
| 219 | |
| 220 | PyTypeObject _PyInterpreterID_Type = { |
| 221 | PyVarObject_HEAD_INIT(&PyType_Type, 0) |
| 222 | "InterpreterID", /* tp_name */ |
| 223 | sizeof(interpid), /* tp_basicsize */ |
| 224 | 0, /* tp_itemsize */ |
| 225 | (destructor)interpid_dealloc, /* tp_dealloc */ |
Jeroen Demeyer | 530f506 | 2019-05-31 04:13:39 +0200 | [diff] [blame] | 226 | 0, /* tp_vectorcall_offset */ |
Eric Snow | c11183c | 2019-03-15 16:35:46 -0600 | [diff] [blame] | 227 | 0, /* tp_getattr */ |
| 228 | 0, /* tp_setattr */ |
| 229 | 0, /* tp_as_async */ |
| 230 | (reprfunc)interpid_repr, /* tp_repr */ |
| 231 | &interpid_as_number, /* tp_as_number */ |
| 232 | 0, /* tp_as_sequence */ |
| 233 | 0, /* tp_as_mapping */ |
| 234 | interpid_hash, /* tp_hash */ |
| 235 | 0, /* tp_call */ |
| 236 | (reprfunc)interpid_str, /* tp_str */ |
| 237 | 0, /* tp_getattro */ |
| 238 | 0, /* tp_setattro */ |
| 239 | 0, /* tp_as_buffer */ |
Serhiy Storchaka | f37a983 | 2019-09-14 19:36:19 +0300 | [diff] [blame] | 240 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /* tp_flags */ |
Eric Snow | c11183c | 2019-03-15 16:35:46 -0600 | [diff] [blame] | 241 | interpid_doc, /* tp_doc */ |
| 242 | 0, /* tp_traverse */ |
| 243 | 0, /* tp_clear */ |
| 244 | interpid_richcompare, /* tp_richcompare */ |
| 245 | 0, /* tp_weaklistoffset */ |
| 246 | 0, /* tp_iter */ |
| 247 | 0, /* tp_iternext */ |
| 248 | 0, /* tp_methods */ |
| 249 | 0, /* tp_members */ |
| 250 | 0, /* tp_getset */ |
Serhiy Storchaka | f37a983 | 2019-09-14 19:36:19 +0300 | [diff] [blame] | 251 | 0, /* tp_base */ |
Eric Snow | c11183c | 2019-03-15 16:35:46 -0600 | [diff] [blame] | 252 | 0, /* tp_dict */ |
| 253 | 0, /* tp_descr_get */ |
| 254 | 0, /* tp_descr_set */ |
| 255 | 0, /* tp_dictoffset */ |
| 256 | 0, /* tp_init */ |
| 257 | 0, /* tp_alloc */ |
| 258 | interpid_new, /* tp_new */ |
| 259 | }; |
| 260 | |
| 261 | PyObject *_PyInterpreterID_New(int64_t id) |
| 262 | { |
| 263 | return (PyObject *)newinterpid(&_PyInterpreterID_Type, id, 0); |
| 264 | } |
| 265 | |
| 266 | PyObject * |
| 267 | _PyInterpreterState_GetIDObject(PyInterpreterState *interp) |
| 268 | { |
| 269 | if (_PyInterpreterState_IDInitref(interp) != 0) { |
| 270 | return NULL; |
| 271 | }; |
| 272 | PY_INT64_T id = PyInterpreterState_GetID(interp); |
| 273 | if (id < 0) { |
| 274 | return NULL; |
| 275 | } |
| 276 | return (PyObject *)newinterpid(&_PyInterpreterID_Type, id, 0); |
| 277 | } |
| 278 | |
| 279 | PyInterpreterState * |
| 280 | _PyInterpreterID_LookUp(PyObject *requested_id) |
| 281 | { |
| 282 | int64_t id; |
Miss Islington (bot) | ca14f04 | 2019-09-25 08:56:05 -0700 | [diff] [blame^] | 283 | if (!interp_id_converter(requested_id, &id)) { |
Serhiy Storchaka | f37a983 | 2019-09-14 19:36:19 +0300 | [diff] [blame] | 284 | return NULL; |
| 285 | } |
Eric Snow | c11183c | 2019-03-15 16:35:46 -0600 | [diff] [blame] | 286 | return _PyInterpreterState_LookUpID(id); |
| 287 | } |