Mark sphinx extensions thread safe

This adds the return of some metadata to our sphinx extension setup to
indicate they are thread safe. This is needed to allow consuming
projects to do multithreaded docs builds. In some cases, this can save a
noticeable amount of time in job execution.

Change-Id: I104271bc706fc33247548a147db0af05aa88737d
Signed-off-by: Sean McGinnis <sean.mcginnis@gmail.com>

2 files changed, 8 insertions, 0 deletions

diff --git a/oslo_policy/sphinxext.py b/oslo_policy/sphinxext.py
index d8b8ce0..a6c02b6 100644
--- a/oslo_policy/sphinxext.py
+++ b/oslo_policy/sphinxext.py
@@ -165,3 +165,7 @@ class ShowPolicyDirective(rst.Directive):
 
 def setup(app):
     app.add_directive('show-policy', ShowPolicyDirective)
+    return {
+        'parallel_read_safe': True,
+        'parallel_write_safe': True,
+    }
diff --git a/oslo_policy/sphinxpolicygen.py b/oslo_policy/sphinxpolicygen.py
index 2693e34..1aef057 100644
--- a/oslo_policy/sphinxpolicygen.py
+++ b/oslo_policy/sphinxpolicygen.py
@@ -92,3 +92,7 @@ def setup(app):
     app.add_config_value('policy_generator_config_file', None, 'env')
     app.add_config_value('sample_policy_basename', None, 'env')
     app.connect('builder-inited', generate_sample)
+    return {
+        'parallel_read_safe': True,
+        'parallel_write_safe': True,
+    }