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Diffstat (limited to 'Doc/whatsnew/3.13.rst')
| -rw-r--r-- | Doc/whatsnew/3.13.rst | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/Doc/whatsnew/3.13.rst b/Doc/whatsnew/3.13.rst index 0e04dcd..40e2e6a 100644 --- a/Doc/whatsnew/3.13.rst +++ b/Doc/whatsnew/3.13.rst @@ -111,6 +111,14 @@ Improved Error Messages ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^ TypeError: split() got an unexpected keyword argument 'max_split'. Did you mean 'maxsplit'? +Incremental Garbage Collection +------------------------------ + +* The cycle garbage collector is now incremental. + This means that maximum pause times are reduced + by an order of magnitude or more for larger heaps. + + Other Language Changes ====================== @@ -350,6 +358,28 @@ fractions sign handling, minimum width and grouping. (Contributed by Mark Dickinson in :gh:`111320`.) +gc +-- + +* The cyclic garbage collector is now incremental, which changes the meanings + of the results of :meth:`gc.get_threshold` and :meth:`gc.get_threshold` as + well as :meth:`gc.get_count` and :meth:`gc.get_stats`. +* :meth:`gc.get_threshold` returns a three-tuple for backwards compatibility, + the first value is the threshold for young collections, as before, the second + value determines the rate at which the old collection is scanned; the + default is 10 and higher values mean that the old collection is scanned more slowly. + The third value is meangless and is always zero. +* :meth:`gc.set_threshold` ignores any items after the second. +* :meth:`gc.get_count` and :meth:`gc.get_stats`. + These functions return the same format of results as before. + The only difference is that instead of the results refering to + the young, aging and old generations, the results refer to the + young generation and the aging and collecting spaces of the old generation. + +In summary, code that attempted to manipulate the behavior of the cycle GC may +not work exactly as intended, but it is very unlikely to harmful. +All other code will work just fine. + glob ---- |