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Small rearrangement to bring together the three functions for probing the hash table.

This commit is contained in:
Raymond Hettinger 2013-09-07 17:41:01 -07:00
parent ae7b00e2d3
commit 04fd9dd52b
1 changed files with 39 additions and 32 deletions
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71
Objects/setobject.c
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@ -64,6 +64,9 @@ PyObject *_PySet_Dummy = dummy;
static PySetObject *free_list[PySet_MAXFREELIST];
static int numfree = 0;
/* ======================================================================== */
/* ======= Begin logic for probing the hash table ========================= */
static setentry *
set_lookkey(PySetObject *so, PyObject *key, Py_hash_t hash)
{
@ -197,38 +200,6 @@ set_lookkey_unicode(PySetObject *so, PyObject *key, Py_hash_t hash)
return freeslot == NULL ? entry : freeslot;
}
/*
Internal routine to insert a new key into the table.
Used by the public insert routine.
Eats a reference to key.
*/
static int
set_insert_key(PySetObject *so, PyObject *key, Py_hash_t hash)
{
setentry *entry;
assert(so->lookup != NULL);
entry = so->lookup(so, key, hash);
if (entry == NULL)
return -1;
if (entry->key == NULL) {
/* UNUSED */
so->fill++;
entry->key = key;
entry->hash = hash;
so->used++;
} else if (entry->key == dummy) {
/* DUMMY */
entry->key = key;
entry->hash = hash;
so->used++;
} else {
/* ACTIVE */
Py_DECREF(key);
}
return 0;
}
/*
Internal routine used by set_table_resize() to insert an item which is
known to be absent from the set. This routine also assumes that
@ -266,6 +237,42 @@ set_insert_clean(PySetObject *so, PyObject *key, Py_hash_t hash)
so->used++;
}
/* ======== End logic for probing the hash table ========================== */
/* ======================================================================== */
/*
Internal routine to insert a new key into the table.
Used by the public insert routine.
Eats a reference to key.
*/
static int
set_insert_key(PySetObject *so, PyObject *key, Py_hash_t hash)
{
setentry *entry;
assert(so->lookup != NULL);
entry = so->lookup(so, key, hash);
if (entry == NULL)
return -1;
if (entry->key == NULL) {
/* UNUSED */
so->fill++;
entry->key = key;
entry->hash = hash;
so->used++;
} else if (entry->key == dummy) {
/* DUMMY */
entry->key = key;
entry->hash = hash;
so->used++;
} else {
/* ACTIVE */
Py_DECREF(key);
}
return 0;
}
/*
Restructure the table by allocating a new table and reinserting all
keys again. When entries have been deleted, the new table may