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gh-117953: Track Extra Details in Global Extensions Cache #118532

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Merged
ericsnowcurrently merged 24 commits into from
May 4, 2024
+578 −138
Merged

gh-117953: Track Extra Details in Global Extensions Cache #118532

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1fc1149
Store the cached def in a wrapping struct rather than directly.
ericsnowcurrently Apr 30, 2024
254e1f1
Pass the cached value around where appropriate.
ericsnowcurrently May 2, 2024
0694318
Pass the cached value to check_singlephase().
ericsnowcurrently May 1, 2024
9ca330b
Add extensions_cache_value helpers.
ericsnowcurrently Apr 30, 2024
7e0c4ee
Add get_cached_m_dict().
ericsnowcurrently Apr 30, 2024
c1c1379
Track ext module origin.
ericsnowcurrently May 1, 2024
8485fb5
Look up core module dicts in get_cached_m_dict().
ericsnowcurrently May 1, 2024
abbddde
Pass m_dict to _extensions_cache_set().
ericsnowcurrently May 1, 2024
12bcd96
Pass m_init to _extensions_cache_set().
ericsnowcurrently May 1, 2024
2d56ada
Add some comments.
ericsnowcurrently May 2, 2024
9c70d53
Use del_cached_m_dict() in set_cached_m_dict().
ericsnowcurrently May 2, 2024
0098057
Add m_init and m_dict fields to extensions_cache_value.
ericsnowcurrently May 1, 2024
57aaba2
Track which interpreter was used to create m_dict.
ericsnowcurrently May 1, 2024
96932eb
Track the interpreter ID.
ericsnowcurrently May 1, 2024
a4cb134
Look up core module dicts in get_cached_m_dict().
ericsnowcurrently May 1, 2024
c4d3be1
Make sure we only set m_dict for non-isolated interpreters.
ericsnowcurrently May 1, 2024
d87584d
Simplify.
ericsnowcurrently May 3, 2024
336d1da
Fix a comment.
ericsnowcurrently May 3, 2024
bd1e134
Separate the def logic from the rest of the extensions cache code.
ericsnowcurrently May 3, 2024
e42e797
Add the per-interpreter cache index to each global cache entry.
ericsnowcurrently May 3, 2024
faa4254
Fix an assert.
ericsnowcurrently May 4, 2024
5276981
Properly sync the cached m_index and the def m_index.
ericsnowcurrently May 3, 2024
f9a2a05
Merge branch 'main' into extensions-cache-better-tracking
ericsnowcurrently May 4, 2024
7d3dbc1
Fix make smelly.
ericsnowcurrently May 4, 2024
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Use del_cached_m_dict() in set_cached_m_dict().
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@ericsnowcurrently
ericsnowcurrently committed May 3, 2024
commit 9c70d5317ada2bbc54b3fd47ca88c2ee1af59752
13 changes: 7 additions & 6 deletions Python/import.c
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Original file line number Diff line number Diff line change
Expand Up @@ -970,6 +970,8 @@ free_extensions_cache_value(struct extensions_cache_value *value)
PyMem_RawFree(value);
}

static void del_cached_m_dict(struct extensions_cache_value *);

static int
set_cached_m_dict(struct extensions_cache_value *value, PyObject *m_dict)
{
Expand Down Expand Up @@ -1001,11 +1003,9 @@ set_cached_m_dict(struct extensions_cache_value *value, PyObject *m_dict)
* Then we'd need to make sure to clear that when the
* runtime is finalized, rather than in
* PyImport_ClearModulesByIndex(). */
PyObject *old = value->def->m_base.m_copy;
if (old != NULL) {
// XXX This should really never happen.
Py_DECREF(old);
}
/* Ideally, the cached dict would always be NULL at this point. */
assert(value->def->m_base.m_copy == NULL || copied != NULL);
del_cached_m_dict(value);

value->def->m_base.m_copy = copied;
return 0;
Expand All @@ -1016,7 +1016,7 @@ del_cached_m_dict(struct extensions_cache_value *value)
{
assert(value != NULL);
if (value->def != NULL) {
Py_XDECREF((PyObject *)value->def->m_base.m_copy);
Py_XDECREF(value->def->m_base.m_copy);
value->def->m_base.m_copy = NULL;
}
}
Expand Down Expand Up @@ -1069,6 +1069,7 @@ update_extensions_cache_value(struct extensions_cache_value *value,
return -1;
}

del_cached_m_dict(value);
*value = temp;
return 0;
}
Expand Down