1 files changed, 14 insertions, 0 deletions
diff --git a/main/client/src/Lock.java b/main/client/src/Lock.java
new file mode 100644
index 00000000..6e5f18b0
--- /dev/null
+++ b/main/client/src/Lock.java
@@ -0,0 +1,14 @@
+package mill.main.client;
+public abstract class Lock implements AutoCloseable{
+    abstract public Locked lock() throws Exception;
+    abstract public Locked tryLock() throws Exception;
+
+    public void await() throws Exception{
+        lock().release();
+    }
+
+    /**
+     * Returns `true` if the lock is *available for taking*
+     */
+    abstract public boolean probe() throws Exception;
+}
+\ No newline at end of file