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bpo-26219: per opcode cache for LOAD_GLOBAL (GH-12884)

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This patch implements per opcode cache mechanism, and use it in
only LOAD_GLOBAL opcode.

Based on Yury's opcache3.patch in bpo-26219.
This commit is contained in:
Inada Naoki 2019-06-03 21:30:58 +09:00 • committed by GitHub
parent 29ec422810
commit 91234a1636
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GPG key ID: 4AEE18F83AFDEB23
13 changed files with 285 additions and 16 deletions
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25
Objects/dictobject.c
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@ -1080,20 +1080,21 @@ insertdict(PyDictObject *mp, PyObject *key, Py_hash_t hash, PyObject *value)
return 0;
}
if (_PyDict_HasSplitTable(mp)) {
mp->ma_values[ix] = value;
if (old_value == NULL) {
/* pending state */
assert(ix == mp->ma_used);
mp->ma_used++;
if (old_value != value) {
if (_PyDict_HasSplitTable(mp)) {
mp->ma_values[ix] = value;
if (old_value == NULL) {
/* pending state */
assert(ix == mp->ma_used);
mp->ma_used++;
}
}
else {
assert(old_value != NULL);
DK_ENTRIES(mp->ma_keys)[ix].me_value = value;
}
mp->ma_version_tag = DICT_NEXT_VERSION();
}
else {
assert(old_value != NULL);
DK_ENTRIES(mp->ma_keys)[ix].me_value = value;
}
mp->ma_version_tag = DICT_NEXT_VERSION();
Py_XDECREF(old_value); /* which **CAN** re-enter (see issue #22653) */
ASSERT_CONSISTENT(mp);
Py_DECREF(key);