Phillip Smyth pushed to branch mac_fixes at BuildStream / buildstream
Commits:
3 changed files:
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+#
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+# Copyright (C) 2017 Codethink Limited
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+# Copyright (C) 2018 Bloomberg Finance LP
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+#
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+# This program is free software; you can redistribute it and/or
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+# modify it under the terms of the GNU Lesser General Public
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+# License as published by the Free Software Foundation; either
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+# version 2 of the License, or (at your option) any later version.
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+#
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+# This library is distributed in the hope that it will be useful,
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+# but WITHOUT ANY WARRANTY; without even the implied warranty of
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+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+# Lesser General Public License for more details.
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+#
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+# You should have received a copy of the GNU Lesser General Public
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+# License along with this library. If not, see <http://www.gnu.org/licenses/>.
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+ |
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+import os
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+import resource
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+ |
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+from .._artifactcache.cascache import CASCache
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+from .._exceptions import PlatformError
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+from ..sandbox import SandboxChroot
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+ |
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+from . import Platform
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+ |
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+ |
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+class Darwin(Platform):
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+ |
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+ def __init__(self, context):
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+ |
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+ super().__init__(context)
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+ self._artifact_cache = CASCache(context)
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+ |
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+ # Need to set resources for _frontend/app.py as this is dependent on the platform
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+ # SafeHardlinks FUSE needs to hold file descriptors for all processes in the sandbox.
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+ # Avoid hitting the limit too quickly.
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+ limits = resource.getrlimit(resource.RLIMIT_NOFILE)
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+ if limits[0] != limits[1]:
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+ resource.setrlimit(resource.RLIMIT_NOFILE, (49152, limits[1]))
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+ |
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+ # Not necessarily 100% reliable, but we want to fail early.
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+ if os.geteuid() != 0:
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+ raise PlatformError("Root privileges are required to run without bubblewrap.")
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+ |
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+ @property
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+ def artifactcache(self):
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+ return self._artifact_cache
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+ |
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+ def create_sandbox(self, *args, **kwargs):
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+ return SandboxChroot(*args, **kwargs)
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+ |
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+ def get_cpu_count(self):
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+ return str(min(len(os.cpu_count())))
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| ... | ... | @@ -40,19 +40,23 @@ class Platform(): |
| 40 | 40 |
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@classmethod
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def create_instance(cls, *args, **kwargs):
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- if sys.platform.startswith('linux'):
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- backend = 'linux'
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- else:
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- backend = 'unix'
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| 47 | 43 |
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# Meant for testing purposes and therefore hidden in the
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# deepest corners of the source code. Try not to abuse this,
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# please?
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if os.getenv('BST_FORCE_BACKEND'):
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backend = os.getenv('BST_FORCE_BACKEND')
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+ elif sys.platform.startswith('linux'):
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+ backend = 'linux'
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+ elif sys.platform.startswith('darwin'):
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+ backend = 'darwin'
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+ else:
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+ backend = 'unix'
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| 53 | 55 |
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if backend == 'linux':
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from .linux import Linux as PlatformImpl
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+ elif backend == 'darwin':
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+ from .darwin import Darwin as PlatformImpl
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elif backend == 'unix':
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from .unix import Unix as PlatformImpl
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else:
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| ... | ... | @@ -92,3 +96,6 @@ class Platform(): |
| 92 | 96 |
def create_sandbox(self, *args, **kwargs):
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raise ImplError("Platform {platform} does not implement create_sandbox()"
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.format(platform=type(self).__name__))
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+ |
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+ def get_cpu_count(self):
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+ return str(min(len(os.sched_getaffinity(0)), 8))
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| ... | ... | @@ -19,6 +19,7 @@ |
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# Tiago Gomes <tiago gomes codethink co uk>
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import os
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+import sys
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from collections import Mapping, OrderedDict
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from pluginbase import PluginBase
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from . import utils
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| ... | ... | @@ -38,6 +39,7 @@ from ._loader import Loader |
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from .element import Element
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from ._message import Message, MessageType
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from ._includes import Includes
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+from .._platform import Platform
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# Project Configuration file
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| ... | ... | @@ -140,6 +142,7 @@ class Project(): |
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profile_start(Topics.LOAD_PROJECT, self.directory.replace(os.sep, '-'))
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self._load(parent_loader=parent_loader, tempdir=tempdir)
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| 142 | 144 |
profile_end(Topics.LOAD_PROJECT, self.directory.replace(os.sep, '-'))
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+ self.platform = Platform.get_platform()
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self._partially_loaded = True
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| ... | ... | @@ -594,7 +597,7 @@ class Project(): |
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# Based on some testing (mainly on AWS), maximum effective
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# max-jobs value seems to be around 8-10 if we have enough cores
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# users should set values based on workload and build infrastructure
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- output.base_variables['max-jobs'] = str(min(len(os.sched_getaffinity(0)), 8))
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+ output.base_variables['max-jobs'] = self.platform.get_cpu_count()
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# Export options into variables, if that was requested
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output.options.export_variables(output.base_variables)
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