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Code Issues Releases Wiki Activity

Issue #14478: Cache the hash of a Decimal in the C version.

This commit is contained in:
Stefan Krah 2012-04-10 16:27:58 +02:00
parent 9deb188799
commit cc74b6ab14
1 changed files with 14 additions and 1 deletions
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15
Modules/_decimal/_decimal.c
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@ -60,6 +60,7 @@
typedef struct {
PyObject_HEAD
Py_hash_t hash;
mpd_t dec;
mpd_uint_t data[_Py_DEC_MINALLOC];
} PyDecObject;
@ -1805,6 +1806,8 @@ PyDecType_New(PyTypeObject *type)
return NULL;
}
dec->hash = -1;
MPD(dec)->flags = MPD_STATIC|MPD_STATIC_DATA;
MPD(dec)->exp = 0;
MPD(dec)->digits = 0;
@ -4210,7 +4213,7 @@ dec_floor(PyObject *self, PyObject *dummy UNUSED)
/* Always uses the module context */
static Py_hash_t
dec_hash(PyObject *v)
_dec_hash(PyDecObject *v)
{
#if defined(CONFIG_64) && _PyHASH_BITS == 61
/* 2**61 - 1 */
@ -4323,6 +4326,16 @@ malloc_error:
goto finish;
}
static Py_hash_t
dec_hash(PyDecObject *self)
{
if (self->hash == -1) {
self->hash = _dec_hash(self);
}
return self->hash;
}
/* __reduce__ */
static PyObject *
dec_reduce(PyObject *self, PyObject *dummy UNUSED)