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| -rw-r--r-- | tests/gem5/fixture.py | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/tests/gem5/fixture.py b/tests/gem5/fixture.py index 00f43ef6a..b04a334b0 100644 --- a/tests/gem5/fixture.py +++ b/tests/gem5/fixture.py @@ -1,3 +1,15 @@ +# Copyright (c) 2019 ARM Limited +# All rights reserved +# +# The license below extends only to copyright in the software and shall +# not be construed as granting a license to any other intellectual +# property including but not limited to intellectual property relating +# to a hardware implementation of the functionality of the software +# licensed hereunder. You may use the software subject to the license +# terms below provided that you ensure that this notice is replicated +# unmodified and in its entirety in all distributions of the software, +# modified or unmodified, in source code or in binary form. +# # Copyright (c) 2017 Mark D. Hill and David A. Wood # All rights reserved. # @@ -29,6 +41,7 @@ import os import tempfile import shutil +import threading from testlib.fixture import Fixture, globalfixture from testlib.config import config, constants @@ -59,6 +72,45 @@ class TempdirFixture(Fixture): # Set path to none so it's not deleted self.path = None +class UniqueFixture(Fixture): + ''' + Base class for fixtures that generate a target in the + filesystem. If the same fixture is used by more than one + test/suite, rather than creating a copy of the fixture, it returns + the same object and makes sure that setup is only executed + once. Devired classses should override the _init and _setup + functions. + + :param target: The absolute path of the target in the filesystem. + + ''' + fixtures = {} + + def __new__(cls, target): + if target in cls.fixtures: + obj = cls.fixtures[target] + else: + obj = super(UniqueFixture, cls).__new__(cls) + obj.lock = threading.Lock() + obj.target = target + cls.fixtures[target] = obj + return obj + + def __init__(self, *args, **kwargs): + with self.lock: + if hasattr(self, '_init_done'): + return + super(UniqueFixture, self).__init__(self, **kwargs) + self._init(*args, **kwargs) + self._init_done = True + + def setup(self, testitem): + with self.lock: + if hasattr(self, '_setup_done'): + return + self._setup_done = True + self._setup(testitem) + class SConsFixture(Fixture): ''' |