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| author | Mark Shannon <mark@hotpy.org> | 2021-05-07 14:19:19 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2021-05-07 14:19:19 (GMT) |
| commit | adcd2205565f91c6719f4141ab4e1da6d7086126 (patch) | |
| tree | 0953b285944eccde57b05b8f3c7e30fb501a3d64 /Lib/test/test_sys.py | |
| parent | b32c8e97951db46484ba3b646b988bcdc4062199 (diff) | |
| download | cpython-adcd2205565f91c6719f4141ab4e1da6d7086126.zip cpython-adcd2205565f91c6719f4141ab4e1da6d7086126.tar.gz cpython-adcd2205565f91c6719f4141ab4e1da6d7086126.tar.bz2 | |
bpo-40222: "Zero cost" exception handling (GH-25729)
"Zero cost" exception handling.
* Uses a lookup table to determine how to handle exceptions.
* Removes SETUP_FINALLY and POP_TOP block instructions, eliminating (most of) the runtime overhead of try statements.
* Reduces the size of the frame object by about 60%.
Diffstat (limited to 'Lib/test/test_sys.py')
| -rw-r--r-- | Lib/test/test_sys.py | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/Lib/test/test_sys.py b/Lib/test/test_sys.py index 1fd5247..4f26689 100644 --- a/Lib/test/test_sys.py +++ b/Lib/test/test_sys.py @@ -1273,13 +1273,12 @@ class SizeofTest(unittest.TestCase): check(sys.float_info, vsize('') + self.P * len(sys.float_info)) # frame import inspect - CO_MAXBLOCKS = 20 x = inspect.currentframe() ncells = len(x.f_code.co_cellvars) nfrees = len(x.f_code.co_freevars) - extras = x.f_code.co_stacksize + x.f_code.co_nlocals +\ - ncells + nfrees - 1 - check(x, vsize('4Pi2c4P3ic' + CO_MAXBLOCKS*'3i' + 'P' + extras*'P')) + localsplus = x.f_code.co_stacksize + x.f_code.co_nlocals +\ + ncells + nfrees + check(x, vsize('8P3i3c' + localsplus*'P')) # function def func(): pass check(func, size('14P')) |