/** \ingroup python_interface_edge * \brief Returns the hash code of the edge */ Py_hash_t igraphmodule_Edge_hash(igraphmodule_EdgeObject* self) { Py_hash_t hash_graph; Py_hash_t hash_index; Py_hash_t result; PyObject* index_o; if (self->hash != -1) return self->hash; index_o = PyInt_FromLong((long int)self->idx); if (index_o == 0) return -1; hash_index = PyObject_Hash(index_o); Py_DECREF(index_o); if (hash_index == -1) return -1; /* Graph objects are unhashable from Python so we cannot call PyObject_Hash * directly. */ hash_graph = igraphmodule_Py_HashPointer(self->gref); if (hash_graph == -1) return -1; result = hash_graph ^ hash_index; if (result == -1) result = 590923713U; self->hash = result; return result; }
static Py_hash_t contextvar_generate_hash(void *addr, PyObject *name) { /* Take hash of `name` and XOR it with the object's addr. The structure of the tree is encoded in objects' hashes, which means that sufficiently similar hashes would result in tall trees with many Collision nodes. Which would, in turn, result in slower get and set operations. The XORing helps to ensure that: (1) sequentially allocated ContextVar objects have different hashes; (2) context variables with equal names have different hashes. */ Py_hash_t name_hash = PyObject_Hash(name); if (name_hash == -1) { return -1; } Py_hash_t res = _Py_HashPointer(addr) ^ name_hash; return res == -1 ? -2 : res; }
Py_hash_t Oid_hash(PyObject *oid) { PyObject *py_oid = git_oid_to_py_str(&((Oid *)oid)->oid); Py_hash_t ret = PyObject_Hash(py_oid); Py_DECREF(py_oid); return ret; }
static int t_tzinfo_hash(t_tzinfo *self) { PyObject *str = PyObject_Str((PyObject *) self->tz); int hash = PyObject_Hash(str); Py_DECREF(str); return hash; }
static PyObject *t_jccenv_strhash(PyObject *self, PyObject *arg) { int hash = PyObject_Hash(arg); char buffer[10]; sprintf(buffer, "%08x", (unsigned int) hash); return PyString_FromStringAndSize(buffer, 8); }
static Py_hash_t Pympq_hash(PympqObject *self) { #ifdef _PyHASH_MODULUS Py_hash_t hash = 0; mpz_t temp, temp1, mask; if (self->hash_cache != -1) return self->hash_cache; mpz_inoc(temp); mpz_inoc(temp1); mpz_inoc(mask); mpz_set_si(mask, 1); mpz_mul_2exp(mask, mask, _PyHASH_BITS); mpz_sub_ui(mask, mask, 1); if (!mpz_invert(temp, mpq_denref(self->q), mask)) { mpz_cloc(temp); mpz_cloc(temp1); mpz_cloc(mask); hash = _PyHASH_INF; if (mpz_sgn(mpq_numref(self->q))<0) hash = -hash; self->hash_cache = hash; return hash; } mpz_set(temp1, mask); mpz_sub_ui(temp1, temp1, 2); mpz_powm(temp, mpq_denref(self->q), temp1, mask); mpz_tdiv_r(temp1, mpq_numref(self->q), mask); mpz_mul(temp, temp, temp1); hash = (Py_hash_t)mpn_mod_1(temp->_mp_d, mpz_size(temp), _PyHASH_MODULUS); if (mpz_sgn(mpq_numref(self->q))<0) hash = -hash; if (hash==-1) hash = -2; mpz_cloc(temp); mpz_cloc(temp1); mpz_cloc(mask); self->hash_cache = hash; return hash; #else PyObject *temp; if (self->hash_cache != -1) return self->hash_cache; if (!(temp = Pympq_To_PyFloat(self))) { SYSTEM_ERROR("Could not convert 'mpq' to float."); return -1; } self->hash_cache = PyObject_Hash(temp); Py_DECREF(temp); return self->hash_cache; #endif }
Py_hash_t Object_hash(Object *object) { const git_oid *oid = git_object_id(object->obj); PyObject *py_oid = git_oid_to_py_str(oid); Py_hash_t ret = PyObject_Hash(py_oid); Py_DECREF(py_oid); return ret; }
long GetHashValue (void) const { long value = PyObject_Hash (Get()); if ( value == -1) { throw CSystemError("Invalid hash value"); } return value; }
static Py_hash_t method_hash(PyMethodObject *a) { Py_hash_t x, y; if (a->im_self == NULL) x = PyObject_Hash(Py_None); else x = PyObject_Hash(a->im_self); if (x == -1) return -1; y = PyObject_Hash(a->im_func); if (y == -1) return -1; x = x ^ y; if (x == -1) x = -2; return x; }
static long struct_hash(PyObject *self) { StructObject * const that = (StructObject*) self; if(that->repr == NULL) { _struct_build_repr(that); } return PyObject_Hash(that->repr); }
static long structseq_hash(PyObject *obj) { PyObject *tup; long result; tup = make_tuple((PyStructSequence*) obj); result = PyObject_Hash(tup); Py_DECREF(tup); return result; }
long _Py_HashDouble(double v) { double intpart, fractpart; int expo; long hipart; long x; /* the final hash value */ /* This is designed so that Python numbers of different types * that compare equal hash to the same value; otherwise comparisons * of mapping keys will turn out weird. */ fractpart = modf(v, &intpart); if (fractpart == 0.0) { /* This must return the same hash as an equal int or long. */ if (intpart > LONG_MAX || -intpart > LONG_MAX) { /* Convert to long and use its hash. */ PyObject *plong; /* converted to Python long */ if (Py_IS_INFINITY(intpart)) /* can't convert to long int -- arbitrary */ v = v < 0 ? -271828.0 : 314159.0; plong = PyLong_FromDouble(v); if (plong == NULL) return -1; x = PyObject_Hash(plong); Py_DECREF(plong); return x; } /* Fits in a C long == a Python int, so is its own hash. */ x = (long)intpart; if (x == -1) x = -2; return x; } /* The fractional part is non-zero, so we don't have to worry about * making this match the hash of some other type. * Use frexp to get at the bits in the double. * Since the VAX D double format has 56 mantissa bits, which is the * most of any double format in use, each of these parts may have as * many as (but no more than) 56 significant bits. * So, assuming sizeof(long) >= 4, each part can be broken into two * longs; frexp and multiplication are used to do that. * Also, since the Cray double format has 15 exponent bits, which is * the most of any double format in use, shifting the exponent field * left by 15 won't overflow a long (again assuming sizeof(long) >= 4). */ v = frexp(v, &expo); v *= 2147483648.0; /* 2**31 */ hipart = (long)v; /* take the top 32 bits */ v = (v - (double)hipart) * 2147483648.0; /* get the next 32 bits */ x = hipart + (long)v + (expo << 15); if (x == -1) x = -2; return x; }
static Py_hash_t thunk_hash(PyObject *self) { PyObject *normal; if (!(normal = _strict_eval_borrowed(self))) { return -1; } return PyObject_Hash(normal); }
static long weakref_hash(PyWeakReference *self) { if (self->hash != -1) return self->hash; if (PyWeakref_GET_OBJECT(self) == Py_None) { PyErr_SetString(PyExc_TypeError, "weak object has gone away"); return -1; } self->hash = PyObject_Hash(PyWeakref_GET_OBJECT(self)); return self->hash; }
static long func_hash(PyFunctionObject *f) { long h,x; h = PyObject_Hash(f->func_code); if (h == -1) return h; x = _Py_HashPointer(f->func_globals); if (x == -1) return x; h ^= x; if (h == -1) h = -2; return h; }
/* * Return 0 if successfull */ static int _PyArray_DescrHashImp(PyArray_Descr *descr, long *hash) { PyObject *l, *tl, *item; Py_ssize_t i; int st; l = PyList_New(0); if (l == NULL) { return -1; } st = _array_descr_walk(descr, l); if (st) { goto clean_l; } /* * Convert the list to tuple and compute the tuple hash using python * builtin function */ tl = PyTuple_New(PyList_Size(l)); for(i = 0; i < PyList_Size(l); ++i) { item = PyList_GetItem(l, i); if (item == NULL) { PyErr_SetString(PyExc_SystemError, "(Hash) Error while translating the list into a tuple " \ "(NULL item)"); goto clean_tl; } PyTuple_SetItem(tl, i, item); } *hash = PyObject_Hash(tl); if (*hash == -1) { /* XXX: does PyObject_Hash set an exception on failure ? */ #if 0 PyErr_SetString(PyExc_SystemError, "(Hash) Error while hashing final tuple"); #endif goto clean_tl; } Py_DECREF(tl); Py_DECREF(l); return 0; clean_tl: Py_DECREF(tl); clean_l: Py_DECREF(l); return -1; }
static Py_hash_t notify_hash(notifyObject *self) { Py_hash_t rv = -1L; PyObject *tself = NULL; /* if self == a tuple, then their hashes are the same. */ int has_payload = PyObject_IsTrue(self->payload); if (!(tself = notify_astuple(self, has_payload))) { goto exit; } rv = PyObject_Hash(tself); exit: Py_XDECREF(tself); return rv; }
static long wrapper_hash(wrapperobject *wp) { int x, y; x = _Py_HashPointer(wp->descr); if (x == -1) return -1; y = PyObject_Hash(wp->self); if (y == -1) return -1; x = x ^ y; if (x == -1) x = -2; return x; }
static PyObject * AtTime_call( AtTime* self, PyObject* args, PyObject* kwds ) { if( !PyTuple_Check(args) || (PyTuple_Size(args) != 1) || (!PyNumber_Check(PyTuple_GetItem(args,0))) ) { PyErr_SetString( PyExc_AttributeError, "Calling AtTime instances require a single time(int) argument" ); return 0; } int timeValue = PyInt_AsLong(PyTuple_GetItem(args,0)); if( PyErr_Occurred() ) return 0; PyObject * tsd = PyThreadState_GetDict(); PyObject * atd = PyDict_GetItemString(tsd, "_AtTime" ); // New reference is either transfered to a list, or decremented below PyObject * hashKey = PyLong_FromLong( PyObject_Hash((PyObject*)self) ); if( !atd ) { // New ref atd = PyDict_New(); PyDict_SetItemString( tsd, "_AtTime", atd ); // tsd now has a ref to atd Py_DECREF(atd); // New refs PyObject * time_stack = PyList_New(1), * cur_stack = PyList_New(1); // PyList_SetItem steals a reference PyList_SetItem( time_stack, 0, PyLong_FromLong(thread_local(current_time)) ); // Give our hashKey reference to cur_stack PyList_SetItem( cur_stack, 0, hashKey ); // Dicts take their own reference, so we release ours after this PyDict_SetItemString( atd, "time_stack", time_stack ); PyDict_SetItemString( atd, "current_stack", cur_stack ); Py_DECREF(time_stack); Py_DECREF(cur_stack); PyObject * utl = PyBool_FromLong( thread_local(use_time_context) ); // takes it's own ref, so we release ours PyDict_SetItemString( atd, "restore_use_time_context", utl ); Py_DECREF(utl); thread_local(use_time_context) = TRUE; //PySys_WriteStdout( "First AtTime struct activated, setting thread_local(use_time_context) to TRUE\n" ); } else {
/* Hash function for range objects. Rough C equivalent of if not len(r): return hash((len(r), None, None)) if len(r) == 1: return hash((len(r), r.start, None)) return hash((len(r), r.start, r.step)) */ static Py_hash_t range_hash(rangeobject *r) { PyObject *t; Py_hash_t result = -1; int cmp_result; t = PyTuple_New(3); if (!t) return -1; Py_INCREF(r->length); PyTuple_SET_ITEM(t, 0, r->length); cmp_result = PyObject_Not(r->length); if (cmp_result == -1) goto end; if (cmp_result == 1) { Py_INCREF(Py_None); Py_INCREF(Py_None); PyTuple_SET_ITEM(t, 1, Py_None); PyTuple_SET_ITEM(t, 2, Py_None); } else { PyObject *one; Py_INCREF(r->start); PyTuple_SET_ITEM(t, 1, r->start); one = PyLong_FromLong(1); if (!one) goto end; cmp_result = PyObject_RichCompareBool(r->length, one, Py_EQ); Py_DECREF(one); if (cmp_result == -1) goto end; if (cmp_result == 1) { Py_INCREF(Py_None); PyTuple_SET_ITEM(t, 2, Py_None); } else { Py_INCREF(r->step); PyTuple_SET_ITEM(t, 2, r->step); } } result = PyObject_Hash(t); end: Py_DECREF(t); return result; }
static long node_hash(NodeObject *self) { #if SIZEOF_LONG >= SIZEOF_VOID_P return (long)self; #else /* convert to a Python long and hash that */ PyObject *longobj; long hash; if ((longobj = PyLong_FromVoidPtr(self)) == NULL) { return -1; } hash = PyObject_Hash(longobj); Py_DECREF(longobj); return hash; #endif }
int pycbc_tc_decode_key(pycbc_Bucket *conn, const void *key, size_t nkey, PyObject **pobj) { PyObject *bobj; int rv = 0; if (conn->data_passthrough) { bobj = PyBytes_FromStringAndSize(key, nkey); *pobj = bobj; } else if (!conn->tc) { return decode_common(pobj, key, nkey, PYCBC_FMT_UTF8); } else { bobj = PyBytes_FromStringAndSize(key, nkey); if (bobj) { rv = do_call_tc(conn, bobj, NULL, pobj, DECODE_KEY); Py_XDECREF(bobj); } else { rv = -1; } if (rv < 0) { return -1; } } if (*pobj == NULL) { return -1; } if (PyObject_Hash(*pobj) == -1) { PYCBC_EXC_WRAP_KEY(PYCBC_EXC_ENCODING, 0, "Transcoder.decode_key must return a hashable object", *pobj); Py_XDECREF(*pobj); return -1; } return 0; }
static long meth_hash(PythonQtSignalFunctionObject *a) { long x,y; if (a->m_self == NULL) x = 0; else { x = PyObject_Hash(a->m_self); if (x == -1) return -1; } y = _Py_HashPointer((void*)(a->m_ml)); if (y == -1) return -1; x ^= y; if (x == -1) x = -2; return x; }
static Py_hash_t meth_hash(PyCFunctionObject *a) { Py_hash_t x, y; if (a->m_self == NULL) x = 0; else { x = PyObject_Hash(a->m_self); if (x == -1) return -1; } y = _Py_HashPointer((void*)(a->m_ml->ml_meth)); if (y == -1) return -1; x ^= y; if (x == -1) x = -2; return x; }
static int64_t tuple_hash(BoxedTuple* v) noexcept { long x, y; Py_ssize_t len = Py_SIZE(v); PyObject** p; long mult = 1000003L; x = 0x345678L; p = v->elts; while (--len >= 0) { y = PyObject_Hash(*p++); if (y == -1) return -1; x = (x ^ y) * mult; /* the cast might truncate len; that doesn't change hash stability */ mult += (long)(82520L + len + len); } x += 97531L; if (x == -1) x = -2; return x; }
static long sllist_hash(SLListObject* self) { long hash = 0; PyObject* iter_node_obj = self->first; while (iter_node_obj != Py_None) { long obj_hash; SLListNodeObject* iter_node = (SLListNodeObject*)iter_node_obj; obj_hash = PyObject_Hash(iter_node->value); if (obj_hash == -1) return -1; hash = hash_combine(hash, obj_hash); iter_node_obj = iter_node->next; } return hash; }
long _Py_HashPointer(void *p) { #if SIZEOF_LONG >= SIZEOF_VOID_P return (long)p; #else /* convert to a Python long and hash that */ PyObject* longobj; long x; if ((longobj = PyLong_FromVoidPtr(p)) == NULL) { x = -1; goto finally; } x = PyObject_Hash(longobj); finally: Py_XDECREF(longobj); return x; #endif }
static long tuplehash(PyTupleObject *v) { register long x, y; register Py_ssize_t len = v->ob_size; register PyObject **p; long mult = 1000003L; x = 0x345678L; p = v->ob_item; while (--len >= 0) { y = PyObject_Hash(*p++); if (y == -1) return -1; x = (x ^ y) * mult; /* the cast might truncate len; that doesn't change hash stability */ mult += (long)(82520L + len + len); } x += 97531L; if (x == -1) x = -2; return x; }
/* * Return 0 if successful */ static int _PyArray_DescrHashImp(PyArray_Descr *descr, npy_hash_t *hash) { PyObject *l, *tl; int st; l = PyList_New(0); if (l == NULL) { return -1; } st = _array_descr_walk(descr, l); if (st) { Py_DECREF(l); return -1; } /* * Convert the list to tuple and compute the tuple hash using python * builtin function */ tl = PyList_AsTuple(l); Py_DECREF(l); if (tl == NULL) return -1; *hash = PyObject_Hash(tl); Py_DECREF(tl); if (*hash == -1) { /* XXX: does PyObject_Hash set an exception on failure ? */ #if 0 PyErr_SetString(PyExc_SystemError, "(Hash) Error while hashing final tuple"); #endif return -1; } return 0; }
static PyObject * infinite_lru_cache_wrapper(lru_cache_object *self, PyObject *args, PyObject *kwds) { PyObject *result; Py_hash_t hash; PyObject *key = lru_cache_make_key(args, kwds, self->typed); if (!key) return NULL; hash = PyObject_Hash(key); if (hash == -1) { Py_DECREF(key); return NULL; } result = _PyDict_GetItem_KnownHash(self->cache, key, hash); if (result) { Py_INCREF(result); self->hits++; Py_DECREF(key); return result; } if (PyErr_Occurred()) { Py_DECREF(key); return NULL; } result = PyObject_Call(self->func, args, kwds); if (!result) { Py_DECREF(key); return NULL; } if (_PyDict_SetItem_KnownHash(self->cache, key, result, hash) < 0) { Py_DECREF(result); Py_DECREF(key); return NULL; } Py_DECREF(key); self->misses++; return result; }