8189123: More consistent classloading

Reviewed-by: acorn, ahgross, rhalade
Contributed-by: harold.seigel@oracle.com

src/share/vm/classfile/verificationType.cpp

 /*
- * Copyright (c) 2003, 2016, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2017, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -63,6 +63,7 @@ bool VerificationType::is_reference_assignable_from(
         name(), Handle(THREAD, klass->class_loader()),
         Handle(THREAD, klass->protection_domain()), true, CHECK_false);
     KlassHandle this_class(THREAD, obj);
+    klass->class_loader_data()->record_dependency(obj, CHECK_false);
 
     if (this_class->is_interface() && (!from_field_is_protected ||
         from.name() != vmSymbols::java_lang_Object())) {
@@ -74,6 +75,7 @@ bool VerificationType::is_reference_assignable_from(
       Klass* from_class = SystemDictionary::resolve_or_fail(
           from.name(), Handle(THREAD, klass->class_loader()),
           Handle(THREAD, klass->protection_domain()), true, CHECK_false);
+      klass->class_loader_data()->record_dependency(from_class, CHECK_false);
       bool result = InstanceKlass::cast(from_class)->is_subclass_of(this_class());
       if (result && DumpSharedSpaces) {
         if (klass()->is_subclass_of(from_class) && klass()->is_subclass_of(this_class())) {

src/share/vm/classfile/verifier.cpp

@@ -1949,9 +1949,11 @@ Klass* ClassVerifier::load_class(Symbol* name, TRAPS) {
   oop loader = current_class()->class_loader();
   oop protection_domain = current_class()->protection_domain();
 
-  return SystemDictionary::resolve_or_fail(
+  Klass* kls = SystemDictionary::resolve_or_fail(
     name, Handle(THREAD, loader), Handle(THREAD, protection_domain),
     true, CHECK_NULL);
+  current_class()->class_loader_data()->record_dependency(kls, CHECK_NULL);
+  return kls;
 }
 
 bool ClassVerifier::is_protected_access(instanceKlassHandle this_class,

src/share/vm/prims/jvm.cpp

@@ -24,6 +24,7 @@
 
 #include "precompiled.hpp"
 #include "classfile/classLoader.hpp"
+#include "classfile/classLoaderData.inline.hpp"
 #include "classfile/classLoaderExt.hpp"
 #include "classfile/javaAssertions.hpp"
 #include "classfile/javaClasses.hpp"
@@ -952,6 +953,12 @@ JVM_ENTRY(jclass, JVM_FindClassFromClass(JNIEnv *env, const char *name,
   Handle h_prot  (THREAD, protection_domain);
   jclass result = find_class_from_class_loader(env, h_name, init, h_loader,
                                                h_prot, true, thread);
+  if (result != NULL) {
+    oop mirror = JNIHandles::resolve_non_null(result);
+    Klass* to_class = java_lang_Class::as_Klass(mirror);
+    ClassLoaderData* cld = ClassLoaderData::class_loader_data(h_loader());
+    cld->record_dependency(to_class, CHECK_NULL);
+  }
 
   if (TraceClassResolution && result != NULL) {
     // this function is generally only used for class loading during verification.