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https://gitflic.ru/project/openide/openide.git
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eb956ca29d
We now access the `frame.f_locals` attribute only once. Multiple access leads to the loss of the changes we have made. We also alter the second argument of the `PyFrame_LocalsToFast()` to 1 to ensure that all the deleted variables will be wiped out from the frame locals. (cherry picked from commit 28abff39b2c37f30651db220e8700032a629ce73) GitOrigin-RevId: 8514da7ec187c1192ea9cdf851f89f008242fc30
69 lines
1.9 KiB
Python
69 lines
1.9 KiB
Python
"""
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Utility for saving locals.
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"""
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import sys
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try:
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import types
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frame_type = types.FrameType
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except:
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frame_type = type(sys._getframe())
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def is_save_locals_available():
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return save_locals_impl is not None
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def save_locals(frame):
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"""
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Copy values from locals_dict into the fast stack slots in the given frame.
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Note: the 'save_locals' branch had a different approach wrapping the frame (much more code, but it gives ideas
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on how to save things partially, not the 'whole' locals).
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"""
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if not isinstance(frame, frame_type):
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# Fix exception when changing Django variable (receiving DjangoTemplateFrame)
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return
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if save_locals_impl is not None:
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try:
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save_locals_impl(frame)
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except:
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pass
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def make_save_locals_impl():
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"""
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Factory for the 'save_locals_impl' method. This may seem like a complicated pattern but it is essential that the method is created at
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module load time. Inner imports after module load time would cause an occasional debugger deadlock due to the importer lock and debugger
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lock being taken in different order in different threads.
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"""
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try:
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if '__pypy__' in sys.builtin_module_names:
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import __pypy__ # @UnresolvedImport
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pypy_locals_to_fast = __pypy__.locals_to_fast
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except:
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pass
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else:
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if '__pypy__' in sys.builtin_module_names:
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def save_locals_pypy_impl(frame):
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pypy_locals_to_fast(frame)
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return save_locals_pypy_impl
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try:
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import ctypes
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locals_to_fast = ctypes.pythonapi.PyFrame_LocalsToFast
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except:
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pass
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else:
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def save_locals_ctypes_impl(frame):
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locals_to_fast(ctypes.py_object(frame), ctypes.c_int(1))
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return save_locals_ctypes_impl
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return None
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save_locals_impl = make_save_locals_impl()
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