Github user ajs6f commented on a diff in the pull request:
https://github.com/apache/jena/pull/233#discussion_r110179015
--- Diff:
jena-arq/src/main/java/org/apache/jena/sparql/core/mosaic/LockTry.java ---
@@ -0,0 +1,8 @@
+package org.apache.jena.sparql.core.mosaic;
+
+import org.apache.jena.shared.Lock;
+
+public interface LockTry extends Lock {
+
+ boolean tryEnterCriticalSection(boolean readLockRequested);
--- End diff --
It might be nice to put a Javadoc comment on this to make the required
semantics precisely known. They seem clear now, but as Jena's concurrency
evolves, they might get less so.
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