mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-11-01 02:38:53 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 15

bpo-29102: Add a unique ID to PyInterpreterState. (#1639)

Browse source
This commit is contained in:
Eric Snow 2017-05-22 19:46:40 -07:00 • committed by GitHub
parent 93fc20b73e
commit e377416c10
8 changed files with 152 additions and 7 deletions
Download patch file Download diff file Expand all files Collapse all files

91
Lib/test/test_capi.py
View file

@ -1,8 +1,10 @@
# Run the _testcapi module tests (tests for the Python/C API): by defn,
# these are all functions _testcapi exports whose name begins with 'test_'.
from collections import namedtuple
import os
import pickle
import platform
import random
import re
import subprocess
@ -384,12 +386,91 @@ class EmbeddingTests(unittest.TestCase):
return out, err
def test_subinterps(self):
# This is just a "don't crash" test
out, err = self.run_embedded_interpreter("repeated_init_and_subinterpreters")
if support.verbose:
print()
print(out)
print(err)
self.assertEqual(err, "")
# The output from _testembed looks like this:
# --- Pass 0 ---
# interp 0 <0x1cf9330>, thread state <0x1cf9700>: id(modules) = 139650431942728
# interp 1 <0x1d4f690>, thread state <0x1d35350>: id(modules) = 139650431165784
# interp 2 <0x1d5a690>, thread state <0x1d99ed0>: id(modules) = 139650413140368
# interp 3 <0x1d4f690>, thread state <0x1dc3340>: id(modules) = 139650412862200
# interp 0 <0x1cf9330>, thread state <0x1cf9700>: id(modules) = 139650431942728
# --- Pass 1 ---
# ...
interp_pat = (r"^interp (\d+) <(0x[\dA-F]+)>, "
r"thread state <(0x[\dA-F]+)>: "
r"id\(modules\) = ([\d]+)$")
Interp = namedtuple("Interp", "id interp tstate modules")
main = None
lastmain = None
numinner = None
numloops = 0
for line in out.splitlines():
if line == "--- Pass {} ---".format(numloops):
if numinner is not None:
self.assertEqual(numinner, 5)
if support.verbose:
print(line)
lastmain = main
main = None
mainid = 0
numloops += 1
numinner = 0
continue
numinner += 1
self.assertLessEqual(numinner, 5)
match = re.match(interp_pat, line)
if match is None:
self.assertRegex(line, interp_pat)
# The last line in the loop should be the same as the first.
if numinner == 5:
self.assertEqual(match.groups(), main)
continue
# Parse the line from the loop. The first line is the main
# interpreter and the 3 afterward are subinterpreters.
interp = Interp(*match.groups())
if support.verbose:
print(interp)
if numinner == 1:
main = interp
id = str(mainid)
else:
subid = mainid + numinner - 1
id = str(subid)
# Validate the loop line for each interpreter.
self.assertEqual(interp.id, id)
self.assertTrue(interp.interp)
self.assertTrue(interp.tstate)
self.assertTrue(interp.modules)
if platform.system() == 'Windows':
# XXX Fix on Windows: something is going on with the
# pointers in Programs/_testembed.c. interp.interp
# is 0x0 and # interp.modules is the same between
# interpreters.
continue
if interp is main:
if lastmain is not None:
# A new main interpreter may have the same interp
# and/or tstate pointer as an earlier finalized/
# destroyed one. So we do not check interp or
# tstate here.
self.assertNotEqual(interp.modules, lastmain.modules)
else:
# A new subinterpreter may have the same
# PyInterpreterState pointer as a previous one if
# the earlier one has already been destroyed. So
# we compare with the main interpreter. The same
# applies to tstate.
self.assertNotEqual(interp.interp, main.interp)
self.assertNotEqual(interp.tstate, main.tstate)
self.assertNotEqual(interp.modules, main.modules)
@staticmethod
def _get_default_pipe_encoding():