Don't convert traceFnCall args to a PersistentVector

Readme.md

@@ -27,7 +27,7 @@ Instructions here apply to ClojureStorm >= `1.11.1-19` and `1.12.0-alpha4_14`
 ```clojure
 (clojure.storm.Tracer/setTraceFnsCallbacks
  {:trace-fn-call-fn (fn [_ fn-ns fn-name fn-args-vec form-id]
-                      (prn "fn-call " fn-ns fn-name fn-args-vec form-id))
+                      (prn "fn-call " fn-ns fn-name (into [] fn-args-vec) form-id))
   :trace-fn-return-fn (fn [_ ret coord form-id]
                         (prn "fn-return" ret coord form-id))
   :trace-fn-unwind-fn (fn [_ throwable coord form-id]

src/jvm/clojure/storm/Emitter.java

@@ -215,18 +215,13 @@ public static Label emitFnPrologue(GeneratorAdapter gen, ObjExpr objx, String mu
 			String fnName = name.getName();
 			String fnNs = name.getNamespace();
 
-            // push all the args array on the stack and then
-            // create a immutable vector
-            // TODO: is there a benefit on creating a PersistentVector here?
-            // Since this array isn't going to be mutated anyway, so we will be paying
-            // the perf cost for no reason
+            // push all the args array on the stack and then            
 			gen.loadArgArray(); 
-			gen.invokeStatic(Type.getType(clojure.lang.PersistentVector.class), Method.getMethod("clojure.lang.PersistentVector create(Object[])"));
 
 			gen.push(fnNs); // push the function namespace
 			gen.push(fnName); // push the function name
 			gen.push((int)formId); // push the form-id
-			gen.invokeStatic(TRACER_CLASS_TYPE, Method.getMethod("void traceFnCall(clojure.lang.IPersistentVector, String, String, int)")); // trace the function call
+			gen.invokeStatic(TRACER_CLASS_TYPE, Method.getMethod("void traceFnCall(Object[], String, String, int)")); // trace the function call
 
             // emit binds for all function's arguments
 			emitBindTraces(gen, objx, arglocals, PersistentVector.EMPTY);

src/jvm/clojure/storm/Tracer.java

@@ -46,7 +46,7 @@ public static void handleThreadException(Thread thread, Throwable ex) {
 			handleExceptionFn.invoke(thread, ex);
 	}
 
-    static public void traceFnCall(IPersistentVector fnArgs, String fnNs, String fnName, int formId) {
+    static public void traceFnCall(Object[] fnArgs, String fnNs, String fnName, int formId) {
 		if (traceFnCallFn != null)
 			traceFnCallFn.invoke(null, fnNs, fnName, fnArgs, formId);
 	}