initial commit (moved from divan)

src/jvmMain/kotlin/net/sergeych/tools/ProtectedOp.jvm.kt

@@ -0,0 +1,8 @@
+package net.sergeych.tools
+
+actual fun ProtectedOp(): ProtectedOpImplementation = object : ProtectedOpImplementation {
+    private val lock = Object()
+    override fun <T> invoke(f: () -> T): T {
+        synchronized(lock) { return f() }
+    }
+}