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gh-112075: Iterating a dict shouldn't require locks #115108

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Merged
merged 7 commits into from
Feb 22, 2024
Merged

gh-112075: Iterating a dict shouldn't require locks #115108

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afddb70
Thread safe lock-free iteration
DinoV Feb 1, 2024
39bc495
Don't use atomics for iteratio and allow multiple threads to race on …
DinoV Feb 16, 2024
902ce67
Fixup ifdef/ifndef
DinoV Feb 16, 2024
0ba2f5d
Use has_unique_reference
DinoV Feb 16, 2024
042cf26
Less atomics
DinoV Feb 21, 2024
a079a6d
Fix style issues
DinoV Feb 21, 2024
a1d7718
acquire_key_value returns -1 and 0
DinoV Feb 22, 2024
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1 change: 1 addition & 0 deletions 1 Include/internal/pycore_dict.h
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Original file line number Diff line number Diff line change
Expand Up @@ -212,6 +212,7 @@ static inline PyDictUnicodeEntry* DK_UNICODE_ENTRIES(PyDictKeysObject *dk) {
#define DICT_WATCHER_AND_MODIFICATION_MASK ((1 << (DICT_MAX_WATCHERS + DICT_WATCHED_MUTATION_BITS)) - 1)

#define DICT_VALUES_SIZE(values) ((uint8_t *)values)[-1]
#define DICT_VALUES_USED_SIZE(values) ((uint8_t *)values)[-2]

#ifdef Py_GIL_DISABLED
#define DICT_NEXT_VERSION(INTERP) \
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