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gh-128954: Reorder _PyInterpreterFrame fields for reduced memory usage #128958

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Merged
merged 3 commits into from
Jan 27, 2025
Merged

gh-128954: Reorder _PyInterpreterFrame fields for reduced memory usage #128958

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e519469
gh-128954: Reorder _PyInterpreterFrame fields for reduced memory usage
colesbury Jan 17, 2025
c04efb5
Fix size test in test_sys
colesbury Jan 17, 2025
293e869
Merge branch 'main' into gh-128954-frame
colesbury Jan 27, 2025
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2 changes: 1 addition & 1 deletion Include/internal/pycore_frame.h
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Original file line number Diff line number Diff line change
Expand Up @@ -69,11 +69,11 @@ typedef struct _PyInterpreterFrame {
PyObject *f_locals; /* Strong reference, may be NULL. Only valid if not on C stack */
PyFrameObject *frame_obj; /* Strong reference, may be NULL. Only valid if not on C stack */
_Py_CODEUNIT *instr_ptr; /* Instruction currently executing (or about to begin) */
_PyStackRef *stackpointer;
#ifdef Py_GIL_DISABLED
/* Index of thread-local bytecode containing instr_ptr. */
int32_t tlbc_index;
#endif
_PyStackRef *stackpointer;
uint16_t return_offset; /* Only relevant during a function call */
char owner;
#ifdef Py_DEBUG
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2 changes: 1 addition & 1 deletion Lib/test/test_sys.py
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Expand Up @@ -1621,7 +1621,7 @@ def func():
return sys._getframe()
x = func()
if support.Py_GIL_DISABLED:
INTERPRETER_FRAME = '10PhcP'
INTERPRETER_FRAME = '9PihcP'
else:
INTERPRETER_FRAME = '9PhcP'
check(x, size('3PiccPP' + INTERPRETER_FRAME + 'P'))
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