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SF patch 576101, by Oren Tirosh: alternative implementation of

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interning.  I modified Oren's patch significantly, but the basic idea
and most of the implementation is unchanged.  Interned strings created
with PyString_InternInPlace() are now mortal, and you must keep a
reference to the resulting string around; use the new function
PyString_InternImmortal() to create immortal interned strings.
This commit is contained in:
Guido van Rossum 2002-08-19 21:43:18 +00:00
parent d8dbf847b6
commit 45ec02aed1
7 changed files with 171 additions and 106 deletions
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12
Objects/dictobject.c
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@ -511,15 +511,9 @@ PyDict_SetItem(register PyObject *op, PyObject *key, PyObject *value)
}
mp = (dictobject *)op;
if (PyString_CheckExact(key)) {
if (((PyStringObject *)key)->ob_sinterned != NULL) {
key = ((PyStringObject *)key)->ob_sinterned;
hash = ((PyStringObject *)key)->ob_shash;
}
else {
hash = ((PyStringObject *)key)->ob_shash;
if (hash == -1)
hash = PyObject_Hash(key);
}
hash = ((PyStringObject *)key)->ob_shash;
if (hash == -1)
hash = PyObject_Hash(key);
}
else {
hash = PyObject_Hash(key);