src/hotspot/share/memory/iterator.inline.hpp
changeset 47216 71c04702a3d5
parent 33105 294e48b4f704
child 47580 96392e113a0a
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/memory/iterator.inline.hpp	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,118 @@
+/*
+ * Copyright (c) 2014, 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
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#ifndef SHARE_VM_MEMORY_ITERATOR_INLINE_HPP
+#define SHARE_VM_MEMORY_ITERATOR_INLINE_HPP
+
+#include "classfile/classLoaderData.hpp"
+#include "memory/iterator.hpp"
+#include "oops/klass.hpp"
+#include "oops/instanceKlass.inline.hpp"
+#include "oops/instanceMirrorKlass.inline.hpp"
+#include "oops/instanceClassLoaderKlass.inline.hpp"
+#include "oops/instanceRefKlass.inline.hpp"
+#include "oops/objArrayKlass.inline.hpp"
+#include "oops/typeArrayKlass.inline.hpp"
+#include "utilities/debug.hpp"
+
+inline void MetadataAwareOopClosure::do_cld_nv(ClassLoaderData* cld) {
+  assert(_klass_closure._oop_closure == this, "Must be");
+
+  bool claim = true;  // Must claim the class loader data before processing.
+  cld->oops_do(_klass_closure._oop_closure, &_klass_closure, claim);
+}
+
+inline void MetadataAwareOopClosure::do_klass_nv(Klass* k) {
+  ClassLoaderData* cld = k->class_loader_data();
+  do_cld_nv(cld);
+}
+
+#ifdef ASSERT
+// This verification is applied to all visited oops.
+// The closures can turn is off by overriding should_verify_oops().
+template <typename T>
+void ExtendedOopClosure::verify(T* p) {
+  if (should_verify_oops()) {
+    T heap_oop = oopDesc::load_heap_oop(p);
+    if (!oopDesc::is_null(heap_oop)) {
+      oop o = oopDesc::decode_heap_oop_not_null(heap_oop);
+      assert(Universe::heap()->is_in_closed_subset(o),
+             "should be in closed *p " PTR_FORMAT " " PTR_FORMAT, p2i(p), p2i(o));
+    }
+  }
+}
+#endif
+
+// Implementation of the non-virtual do_oop dispatch.
+
+template <class OopClosureType, typename T>
+inline void Devirtualizer<true>::do_oop(OopClosureType* closure, T* p) {
+  debug_only(closure->verify(p));
+  closure->do_oop_nv(p);
+}
+template <class OopClosureType>
+inline void Devirtualizer<true>::do_klass(OopClosureType* closure, Klass* k) {
+  closure->do_klass_nv(k);
+}
+template <class OopClosureType>
+void Devirtualizer<true>::do_cld(OopClosureType* closure, ClassLoaderData* cld) {
+  closure->do_cld_nv(cld);
+}
+template <class OopClosureType>
+inline bool Devirtualizer<true>::do_metadata(OopClosureType* closure) {
+  // Make sure the non-virtual and the virtual versions match.
+  assert(closure->do_metadata_nv() == closure->do_metadata(), "Inconsistency in do_metadata");
+  return closure->do_metadata_nv();
+}
+
+// Implementation of the virtual do_oop dispatch.
+
+template <class OopClosureType, typename T>
+void Devirtualizer<false>::do_oop(OopClosureType* closure, T* p) {
+  debug_only(closure->verify(p));
+  closure->do_oop(p);
+}
+template <class OopClosureType>
+void Devirtualizer<false>::do_klass(OopClosureType* closure, Klass* k) {
+  closure->do_klass(k);
+}
+template <class OopClosureType>
+void Devirtualizer<false>::do_cld(OopClosureType* closure, ClassLoaderData* cld) {
+  closure->do_cld(cld);
+}
+template <class OopClosureType>
+bool Devirtualizer<false>::do_metadata(OopClosureType* closure) {
+  return closure->do_metadata();
+}
+
+// The list of all "specializable" oop_oop_iterate function definitions.
+#define ALL_KLASS_OOP_OOP_ITERATE_DEFN(OopClosureType, nv_suffix)                  \
+  ALL_INSTANCE_KLASS_OOP_OOP_ITERATE_DEFN(             OopClosureType, nv_suffix)  \
+  ALL_INSTANCE_REF_KLASS_OOP_OOP_ITERATE_DEFN(         OopClosureType, nv_suffix)  \
+  ALL_INSTANCE_MIRROR_KLASS_OOP_OOP_ITERATE_DEFN(      OopClosureType, nv_suffix)  \
+  ALL_INSTANCE_CLASS_LOADER_KLASS_OOP_OOP_ITERATE_DEFN(OopClosureType, nv_suffix)  \
+  ALL_OBJ_ARRAY_KLASS_OOP_OOP_ITERATE_DEFN(            OopClosureType, nv_suffix)  \
+  ALL_TYPE_ARRAY_KLASS_OOP_OOP_ITERATE_DEFN(           OopClosureType, nv_suffix)
+
+#endif // SHARE_VM_MEMORY_ITERATOR_INLINE_HPP