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| author | Sam Gross <colesbury@gmail.com> | 2025-04-21 19:54:25 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2025-04-21 19:54:25 (GMT) |
| commit | da53660f35db2dfb1e6181e603468dfe5758f3b8 (patch) | |
| tree | cf641cfff0634552f7d84ae9b246fa17d5e04166 /Python/optimizer_bytecodes.c | |
| parent | 8dfa840773d1d6bae1bf6e0dfa07618ea10c9d71 (diff) | |
| download | cpython-da53660f35db2dfb1e6181e603468dfe5758f3b8.zip cpython-da53660f35db2dfb1e6181e603468dfe5758f3b8.tar.gz cpython-da53660f35db2dfb1e6181e603468dfe5758f3b8.tar.bz2 | |
gh-131586: Avoid refcount contention in context managers (gh-131851)
This avoid reference count contention in the free threading build
when calling special methods like `__enter__` and `__exit__`.
Diffstat (limited to 'Python/optimizer_bytecodes.c')
| -rw-r--r-- | Python/optimizer_bytecodes.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/Python/optimizer_bytecodes.c b/Python/optimizer_bytecodes.c index 6f7f9b0..9f1e3f6 100644 --- a/Python/optimizer_bytecodes.c +++ b/Python/optimizer_bytecodes.c @@ -897,9 +897,14 @@ dummy_func(void) { } } - op(_LOAD_SPECIAL, (owner -- attr, self_or_null)) { - attr = sym_new_not_null(ctx); - self_or_null = sym_new_unknown(ctx); + op(_INSERT_NULL, (self -- method_and_self[2])) { + method_and_self[0] = sym_new_null(ctx); + method_and_self[1] = self; + } + + op(_LOAD_SPECIAL, (method_and_self[2] -- method_and_self[2])) { + method_and_self[0] = sym_new_not_null(ctx); + method_and_self[1] = sym_new_unknown(ctx); } op(_JUMP_TO_TOP, (--)) { |