incorporate androidlib

app/src/main/java/com/geeksville/mesh/concurrent/DeferredExecution.kt

@@ -0,0 +1,30 @@
+package com.geeksville.mesh.concurrent
+
+import com.geeksville.mesh.android.Logging
+
+
+/**
+ * Sometimes when starting services we face situations where messages come in that require computation
+ * but we can't do that computation yet because we are still waiting for some long running init to
+ * complete.
+ *
+ * This class lets you queue up closures to run at a later date and later on you can call run() to
+ * run all the previously queued work.
+ */
+class DeferredExecution : Logging {
+    private val queue = mutableListOf<() -> Unit>()
+
+    /// Queue some new work
+    fun add(fn: () -> Unit) {
+        queue.add(fn)
+    }
+
+    /// run all work in the queue and clear it to be ready to accept new work
+    fun run() {
+        debug("Running deferred execution numjobs=${queue.size}")
+        queue.forEach {
+            it()
+        }
+        queue.clear()
+    }
+}