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author | 2020-12-26 02:58:33 +0100 | |
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committer | 2020-12-26 02:58:33 +0100 | |
commit | ea251806b8dffff11b30d2182af1e589caf88acf (patch) | |
tree | 10d413170c8e71dd19079b3d22eea4ebd5ddf7a5 /Include | |
parent | bpo-42694: Prevent creating _curses_panel.panel (GH-23948) (diff) | |
download | cpython-ea251806b8dffff11b30d2182af1e589caf88acf.tar.gz cpython-ea251806b8dffff11b30d2182af1e589caf88acf.tar.bz2 cpython-ea251806b8dffff11b30d2182af1e589caf88acf.zip |
bpo-40521: Per-interpreter interned strings (GH-20085)
Make the Unicode dictionary of interned strings compatible with
subinterpreters.
Remove the INTERN_NAME_STRINGS macro in typeobject.c: names are
always now interned (even if EXPERIMENTAL_ISOLATED_SUBINTERPRETERS
macro is defined).
_PyUnicode_ClearInterned() now uses PyDict_Next() to no longer
allocate memory, to ensure that the interned dictionary is cleared.
Diffstat (limited to 'Include')
-rw-r--r-- | Include/internal/pycore_interp.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/Include/internal/pycore_interp.h b/Include/internal/pycore_interp.h index 339c2c4c61..58b1126712 100644 --- a/Include/internal/pycore_interp.h +++ b/Include/internal/pycore_interp.h @@ -76,6 +76,17 @@ struct _Py_unicode_state { shared as well. */ PyObject *latin1[256]; struct _Py_unicode_fs_codec fs_codec; + + /* This dictionary holds all interned unicode strings. Note that references + to strings in this dictionary are *not* counted in the string's ob_refcnt. + When the interned string reaches a refcnt of 0 the string deallocation + function will delete the reference from this dictionary. + + Another way to look at this is that to say that the actual reference + count of a string is: s->ob_refcnt + (s->state ? 2 : 0) + */ + PyObject *interned; + // Unicode identifiers (_Py_Identifier): see _PyUnicode_FromId() struct _Py_unicode_ids ids; }; |