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[3.13] GH-117759: Document incremental GC (GH-123266) (#123395)

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GH-117759: Document incremental GC (GH-123266)

* Update what's new

* Update gc module docs and fix inconsistency in gc.get_objects
(cherry picked from commit f49a91648a)

Co-authored-by: Mark Shannon <mark@hotpy.org>
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Miss Islington (bot) 2024-09-02 13:12:16 +02:00 • committed by GitHub
parent cbcb9e1c0f
commit aca65112fe
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3 changed files with 69 additions and 26 deletions
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27
Python/gc.c
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@ -1701,20 +1701,25 @@ _PyGC_GetObjects(PyInterpreterState *interp, int generation)
GCState *gcstate = &interp->gc;
PyObject *result = PyList_New(0);
if (result == NULL) {
return NULL;
/* Generation:
* -1: Return all objects
* 0: All young objects
* 1: No objects
* 2: All old objects
*/
if (result == NULL || generation == 1) {
return result;
}
if (generation == -1) {
/* If generation is -1, get all objects from all generations */
for (int i = 0; i < NUM_GENERATIONS; i++) {
if (append_objects(result, GEN_HEAD(gcstate, i))) {
goto error;
}
if (generation <= 0) {
if (append_objects(result, &gcstate->young.head)) {
goto error;
}
}
else {
if (append_objects(result, GEN_HEAD(gcstate, generation))) {
if (generation != 0) {
if (append_objects(result, &gcstate->old[0].head)) {
goto error;
}
if (append_objects(result, &gcstate->old[1].head)) {
goto error;
}
}