1 files changed, 48 insertions, 0 deletions
diff --git a/src/buildstream/_platform/darwin.py b/src/buildstream/_platform/darwin.py
new file mode 100644
index 000000000..8e08685ec
--- /dev/null
+++ b/src/buildstream/_platform/darwin.py
@@ -0,0 +1,48 @@
+#
+#  Copyright (C) 2017 Codethink Limited
+#  Copyright (C) 2018 Bloomberg Finance LP
+#
+#  This program is free software; you can redistribute it and/or
+#  modify it under the terms of the GNU Lesser General Public
+#  License as published by the Free Software Foundation; either
+#  version 2 of the License, or (at your option) any later version.
+#
+#  This library is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the GNU
+#  Lesser General Public License for more details.
+#
+#  You should have received a copy of the GNU Lesser General Public
+#  License along with this library. If not, see <http://www.gnu.org/licenses/>.
+
+import os
+
+from ..sandbox import SandboxDummy
+
+from .platform import Platform
+
+
+class Darwin(Platform):
+
+    # This value comes from OPEN_MAX in syslimits.h
+    OPEN_MAX = 10240
+
+    def create_sandbox(self, *args, **kwargs):
+        kwargs['dummy_reason'] = \
+            "OSXFUSE is not supported and there are no supported sandbox " + \
+            "technologies for MacOS at this time"
+        return SandboxDummy(*args, **kwargs)
+
+    def check_sandbox_config(self, config):
+        # Accept all sandbox configs as it's irrelevant with the dummy sandbox (no Sandbox.run).
+        return True
+
+    def get_cpu_count(self, cap=None):
+        cpu_count = os.cpu_count()
+        if cap is None:
+            return cpu_count
+        else:
+            return min(cpu_count, cap)
+
+    def set_resource_limits(self, soft_limit=OPEN_MAX, hard_limit=None):
+        super().set_resource_limits(soft_limit)