Metadatatype back to metaspace.hpp to reduce patch size stuefe-new-metaspace-branch
authorstuefe
Tue, 26 Nov 2019 16:21:29 +0100
branchstuefe-new-metaspace-branch
changeset 59272 54750b448264
parent 59271 1558266946de
Metadatatype back to metaspace.hpp to reduce patch size
src/hotspot/share/classfile/classLoaderData.hpp
src/hotspot/share/gc/shared/collectedHeap.cpp
src/hotspot/share/gc/shared/collectedHeap.hpp
src/hotspot/share/gc/shared/gcTrace.cpp
src/hotspot/share/gc/shared/gcTrace.hpp
src/hotspot/share/gc/shared/gcTraceSend.cpp
src/hotspot/share/gc/shared/gcVMOperations.cpp
src/hotspot/share/gc/shared/gcVMOperations.hpp
src/hotspot/share/gc/shenandoah/shenandoahHeap.cpp
src/hotspot/share/gc/shenandoah/shenandoahHeap.hpp
src/hotspot/share/gc/z/zCollectedHeap.cpp
src/hotspot/share/gc/z/zCollectedHeap.hpp
src/hotspot/share/jfr/recorder/checkpoint/types/jfrType.cpp
src/hotspot/share/memory/metaspace.cpp
src/hotspot/share/memory/metaspace.hpp
src/hotspot/share/memory/metaspace/classLoaderMetaspace.cpp
src/hotspot/share/memory/metaspace/classLoaderMetaspace.hpp
src/hotspot/share/memory/metaspace/metaspaceEnums.cpp
src/hotspot/share/memory/metaspace/metaspaceEnums.hpp
src/hotspot/share/memory/metaspace/metaspaceReport.cpp
src/hotspot/share/memory/metaspace/metaspaceSizesSnapshot.cpp
src/hotspot/share/memory/metaspaceCounters.cpp
src/hotspot/share/memory/metaspaceTracer.cpp
src/hotspot/share/memory/metaspaceTracer.hpp
src/hotspot/share/services/memReporter.cpp
src/hotspot/share/services/memReporter.hpp
src/hotspot/share/services/memoryPool.cpp
src/hotspot/share/services/virtualMemoryTracker.cpp
src/hotspot/share/services/virtualMemoryTracker.hpp
test/hotspot/gtest/metaspace/test_is_metaspace_obj.cpp
test/hotspot/gtest/metaspace/test_metaspaceUtils.cpp
--- a/src/hotspot/share/classfile/classLoaderData.hpp	Tue Nov 26 11:29:20 2019 +0100
+++ b/src/hotspot/share/classfile/classLoaderData.hpp	Tue Nov 26 16:21:29 2019 +0100
@@ -27,6 +27,7 @@
 
 #include "memory/allocation.hpp"
 #include "memory/memRegion.hpp"
+#include "memory/metaspace.hpp"
 #include "oops/oopHandle.hpp"
 #include "oops/weakHandle.hpp"
 #include "runtime/atomic.hpp"
--- a/src/hotspot/share/gc/shared/collectedHeap.cpp	Tue Nov 26 11:29:20 2019 +0100
+++ b/src/hotspot/share/gc/shared/collectedHeap.cpp	Tue Nov 26 16:21:29 2019 +0100
@@ -106,18 +106,18 @@
       MetaspaceUtils::used_bytes(),
       MetaspaceUtils::reserved_bytes());
   const MetaspaceSizes data_space(
-      MetaspaceUtils::committed_bytes(metaspace::NonClassType),
-      MetaspaceUtils::used_bytes(metaspace::NonClassType),
-      MetaspaceUtils::reserved_bytes(metaspace::NonClassType));
+      MetaspaceUtils::committed_bytes(Metaspace::NonClassType),
+      MetaspaceUtils::used_bytes(Metaspace::NonClassType),
+      MetaspaceUtils::reserved_bytes(Metaspace::NonClassType));
   const MetaspaceSizes class_space(
-      MetaspaceUtils::committed_bytes(metaspace::ClassType),
-      MetaspaceUtils::used_bytes(metaspace::ClassType),
-      MetaspaceUtils::reserved_bytes(metaspace::ClassType));
+      MetaspaceUtils::committed_bytes(Metaspace::ClassType),
+      MetaspaceUtils::used_bytes(Metaspace::ClassType),
+      MetaspaceUtils::reserved_bytes(Metaspace::ClassType));
 
   const MetaspaceChunkFreeListSummary& ms_chunk_free_list_summary =
-    MetaspaceUtils::chunk_free_list_summary(metaspace::NonClassType);
+    MetaspaceUtils::chunk_free_list_summary(Metaspace::NonClassType);
   const MetaspaceChunkFreeListSummary& class_chunk_free_list_summary =
-    MetaspaceUtils::chunk_free_list_summary(metaspace::ClassType);
+    MetaspaceUtils::chunk_free_list_summary(Metaspace::ClassType);
 
   return MetaspaceSummary(MetaspaceGC::capacity_until_GC(), meta_space, data_space, class_space,
                           ms_chunk_free_list_summary, class_chunk_free_list_summary);
@@ -256,7 +256,7 @@
 
 MetaWord* CollectedHeap::satisfy_failed_metadata_allocation(ClassLoaderData* loader_data,
                                                             size_t word_size,
-                                                            metaspace::MetadataType mdtype) {
+                                                            Metaspace::MetadataType mdtype) {
   uint loop_count = 0;
   uint gc_count = 0;
   uint full_gc_count = 0;
--- a/src/hotspot/share/gc/shared/collectedHeap.hpp	Tue Nov 26 11:29:20 2019 +0100
+++ b/src/hotspot/share/gc/shared/collectedHeap.hpp	Tue Nov 26 16:21:29 2019 +0100
@@ -29,7 +29,7 @@
 #include "gc/shared/gcWhen.hpp"
 #include "gc/shared/verifyOption.hpp"
 #include "memory/allocation.hpp"
-#include "memory/metaspace/metaspaceEnums.hpp"
+#include "memory/metaspace.hpp"
 #include "runtime/handles.hpp"
 #include "runtime/perfData.hpp"
 #include "runtime/safepoint.hpp"
@@ -358,7 +358,7 @@
 
   virtual MetaWord* satisfy_failed_metadata_allocation(ClassLoaderData* loader_data,
                                                        size_t size,
-                                                       metaspace::MetadataType mdtype);
+                                                       Metaspace::MetadataType mdtype);
 
   // Returns "true" iff there is a stop-world GC in progress.  (I assume
   // that it should answer "false" for the concurrent part of a concurrent
--- a/src/hotspot/share/gc/shared/gcTrace.cpp	Tue Nov 26 11:29:20 2019 +0100
+++ b/src/hotspot/share/gc/shared/gcTrace.cpp	Tue Nov 26 16:21:29 2019 +0100
@@ -30,7 +30,7 @@
 #include "gc/shared/gcTrace.hpp"
 #include "gc/shared/objectCountEventSender.hpp"
 #include "gc/shared/referenceProcessorStats.hpp"
-#include "memory/metaspace/metaspaceEnums.hpp"
+#include "memory/metaspace.hpp"
 #include "memory/heapInspection.hpp"
 #include "memory/resourceArea.hpp"
 #include "runtime/os.hpp"
@@ -117,9 +117,9 @@
 void GCTracer::report_metaspace_summary(GCWhen::Type when, const MetaspaceSummary& summary) const {
   send_meta_space_summary_event(when, summary);
 
-  send_metaspace_chunk_free_list_summary(when, metaspace::NonClassType, summary.metaspace_chunk_free_list_summary());
+  send_metaspace_chunk_free_list_summary(when, Metaspace::NonClassType, summary.metaspace_chunk_free_list_summary());
   if (UseCompressedClassPointers) {
-    send_metaspace_chunk_free_list_summary(when, metaspace::ClassType, summary.class_chunk_free_list_summary());
+    send_metaspace_chunk_free_list_summary(when, Metaspace::ClassType, summary.class_chunk_free_list_summary());
   }
 }
 
--- a/src/hotspot/share/gc/shared/gcTrace.hpp	Tue Nov 26 11:29:20 2019 +0100
+++ b/src/hotspot/share/gc/shared/gcTrace.hpp	Tue Nov 26 16:21:29 2019 +0100
@@ -30,7 +30,7 @@
 #include "gc/shared/gcId.hpp"
 #include "gc/shared/gcName.hpp"
 #include "gc/shared/gcWhen.hpp"
-#include "memory/metaspace/metaspaceEnums.hpp"
+#include "memory/metaspace.hpp"
 #include "memory/referenceType.hpp"
 #include "utilities/macros.hpp"
 #include "utilities/ticks.hpp"
@@ -112,7 +112,7 @@
   void send_garbage_collection_event() const;
   void send_gc_heap_summary_event(GCWhen::Type when, const GCHeapSummary& heap_summary) const;
   void send_meta_space_summary_event(GCWhen::Type when, const MetaspaceSummary& meta_space_summary) const;
-  void send_metaspace_chunk_free_list_summary(GCWhen::Type when, metaspace::MetadataType mdtype, const MetaspaceChunkFreeListSummary& summary) const;
+  void send_metaspace_chunk_free_list_summary(GCWhen::Type when, Metaspace::MetadataType mdtype, const MetaspaceChunkFreeListSummary& summary) const;
   void send_reference_stats_event(ReferenceType type, size_t count) const;
   void send_phase_events(TimePartitions* time_partitions) const;
 };
--- a/src/hotspot/share/gc/shared/gcTraceSend.cpp	Tue Nov 26 11:29:20 2019 +0100
+++ b/src/hotspot/share/gc/shared/gcTraceSend.cpp	Tue Nov 26 16:21:29 2019 +0100
@@ -60,7 +60,7 @@
   }
 }
 
-void GCTracer::send_metaspace_chunk_free_list_summary(GCWhen::Type when, metaspace::MetadataType mdtype,
+void GCTracer::send_metaspace_chunk_free_list_summary(GCWhen::Type when, Metaspace::MetadataType mdtype,
                                                       const MetaspaceChunkFreeListSummary& summary) const {
   EventMetaspaceChunkFreeListSummary e;
   if (e.should_commit()) {
--- a/src/hotspot/share/gc/shared/gcVMOperations.cpp	Tue Nov 26 11:29:20 2019 +0100
+++ b/src/hotspot/share/gc/shared/gcVMOperations.cpp	Tue Nov 26 16:21:29 2019 +0100
@@ -33,7 +33,6 @@
 #include "interpreter/oopMapCache.hpp"
 #include "logging/log.hpp"
 #include "memory/metaspace/classLoaderMetaspace.hpp"
-#include "memory/metaspace/metaspaceEnums.hpp"
 #include "memory/oopFactory.hpp"
 #include "memory/universe.hpp"
 #include "runtime/handles.inline.hpp"
@@ -182,7 +181,7 @@
 
 VM_CollectForMetadataAllocation::VM_CollectForMetadataAllocation(ClassLoaderData* loader_data,
                                                                  size_t size,
-                                                                 metaspace::MetadataType mdtype,
+                                                                 Metaspace::MetadataType mdtype,
                                                                  uint gc_count_before,
                                                                  uint full_gc_count_before,
                                                                  GCCause::Cause gc_cause)
--- a/src/hotspot/share/gc/shared/gcVMOperations.hpp	Tue Nov 26 11:29:20 2019 +0100
+++ b/src/hotspot/share/gc/shared/gcVMOperations.hpp	Tue Nov 26 16:21:29 2019 +0100
@@ -28,7 +28,7 @@
 #include "gc/shared/collectedHeap.hpp"
 #include "gc/shared/genCollectedHeap.hpp"
 #include "memory/heapInspection.hpp"
-#include "memory/metaspace/metaspaceEnums.hpp"
+#include "memory/metaspace.hpp"
 #include "prims/jvmtiExport.hpp"
 #include "runtime/handles.hpp"
 #include "runtime/jniHandles.hpp"
@@ -207,13 +207,13 @@
  private:
   MetaWord*                _result;
   size_t                   _size;     // size of object to be allocated
-  metaspace::MetadataType  _mdtype;
+  Metaspace::MetadataType  _mdtype;
   ClassLoaderData*         _loader_data;
 
  public:
   VM_CollectForMetadataAllocation(ClassLoaderData* loader_data,
                                   size_t size,
-                                  metaspace::MetadataType mdtype,
+                                  Metaspace::MetadataType mdtype,
                                   uint gc_count_before,
                                   uint full_gc_count_before,
                                   GCCause::Cause gc_cause);
--- a/src/hotspot/share/gc/shenandoah/shenandoahHeap.cpp	Tue Nov 26 11:29:20 2019 +0100
+++ b/src/hotspot/share/gc/shenandoah/shenandoahHeap.cpp	Tue Nov 26 16:21:29 2019 +0100
@@ -882,7 +882,7 @@
 
 MetaWord* ShenandoahHeap::satisfy_failed_metadata_allocation(ClassLoaderData* loader_data,
                                                              size_t size,
-                                                             metaspace::MetadataType mdtype) {
+                                                             Metaspace::MetadataType mdtype) {
   MetaWord* result;
 
   // Inform metaspace OOM to GC heuristics if class unloading is possible.
--- a/src/hotspot/share/gc/shenandoah/shenandoahHeap.hpp	Tue Nov 26 11:29:20 2019 +0100
+++ b/src/hotspot/share/gc/shenandoah/shenandoahHeap.hpp	Tue Nov 26 16:21:29 2019 +0100
@@ -32,7 +32,7 @@
 #include "gc/shenandoah/shenandoahLock.hpp"
 #include "gc/shenandoah/shenandoahEvacOOMHandler.hpp"
 #include "gc/shenandoah/shenandoahSharedVariables.hpp"
-#include "memory/metaspace/metaspaceEnums.hpp"
+#include "memory/metaspace.hpp"
 #include "services/memoryManager.hpp"
 
 class ConcurrentGCTimer;
@@ -593,7 +593,7 @@
   HeapWord* mem_allocate(size_t size, bool* what);
   MetaWord* satisfy_failed_metadata_allocation(ClassLoaderData* loader_data,
                                                size_t size,
-                                               metaspace::MetadataType mdtype);
+                                               Metaspace::MetadataType mdtype);
 
   void notify_mutator_alloc_words(size_t words, bool waste);
 
--- a/src/hotspot/share/gc/z/zCollectedHeap.cpp	Tue Nov 26 11:29:20 2019 +0100
+++ b/src/hotspot/share/gc/z/zCollectedHeap.cpp	Tue Nov 26 16:21:29 2019 +0100
@@ -34,7 +34,6 @@
 #include "gc/z/zStat.hpp"
 #include "gc/z/zUtils.inline.hpp"
 #include "memory/metaspace/classLoaderMetaspace.hpp"
-#include "memory/metaspace/metaspaceEnums.hpp"
 #include "memory/universe.hpp"
 #include "runtime/mutexLocker.hpp"
 #include "utilities/align.hpp"
@@ -147,7 +146,7 @@
 
 MetaWord* ZCollectedHeap::satisfy_failed_metadata_allocation(ClassLoaderData* loader_data,
                                                              size_t size,
-                                                             metaspace::MetadataType mdtype) {
+                                                             Metaspace::MetadataType mdtype) {
   MetaWord* result;
 
   // Start asynchronous GC
--- a/src/hotspot/share/gc/z/zCollectedHeap.hpp	Tue Nov 26 11:29:20 2019 +0100
+++ b/src/hotspot/share/gc/z/zCollectedHeap.hpp	Tue Nov 26 16:21:29 2019 +0100
@@ -34,7 +34,7 @@
 #include "gc/z/zRuntimeWorkers.hpp"
 #include "gc/z/zStat.hpp"
 #include "gc/z/zUncommitter.hpp"
-#include "memory/metaspace/metaspaceEnums.hpp"
+#include "memory/metaspace.hpp"
 
 class ZCollectedHeap : public CollectedHeap {
   friend class VMStructs;
@@ -80,7 +80,7 @@
   virtual HeapWord* mem_allocate(size_t size, bool* gc_overhead_limit_was_exceeded);
   virtual MetaWord* satisfy_failed_metadata_allocation(ClassLoaderData* loader_data,
                                                        size_t size,
-                                                       metaspace::MetadataType mdtype);
+                                                       Metaspace::MetadataType mdtype);
   virtual void collect(GCCause::Cause cause);
   virtual void collect_as_vm_thread(GCCause::Cause cause);
   virtual void do_full_collection(bool clear_all_soft_refs);
--- a/src/hotspot/share/jfr/recorder/checkpoint/types/jfrType.cpp	Tue Nov 26 11:29:20 2019 +0100
+++ b/src/hotspot/share/jfr/recorder/checkpoint/types/jfrType.cpp	Tue Nov 26 16:21:29 2019 +0100
@@ -191,11 +191,11 @@
 }
 
 void MetadataTypeConstant::serialize(JfrCheckpointWriter& writer) {
-  static const u4 nof_entries = metaspace::MetadataTypeCount;
+  static const u4 nof_entries = Metaspace::MetadataTypeCount;
   writer.write_count(nof_entries);
   for (u4 i = 0; i < nof_entries; ++i) {
     writer.write_key(i);
-    writer.write(metaspace::describe_mdtype((metaspace::MetadataType)i));
+    writer.write(metaspace::describe_mdtype((Metaspace::MetadataType)i));
   }
 }
 
--- a/src/hotspot/share/memory/metaspace.cpp	Tue Nov 26 11:29:20 2019 +0100
+++ b/src/hotspot/share/memory/metaspace.cpp	Tue Nov 26 16:21:29 2019 +0100
@@ -22,7 +22,6 @@
  *
  */
 
-#include <memory/metaspace/settings.hpp>
 #include "precompiled.hpp"
 
 #include "aot/aotLoader.hpp"
@@ -41,6 +40,7 @@
 #include "memory/metaspace/metaspaceReport.hpp"
 #include "memory/metaspace/metaspaceSizesSnapshot.hpp"
 #include "memory/metaspace/runningCounters.hpp"
+#include "memory/metaspace/settings.hpp"
 #include "memory/metaspace/virtualSpaceList.hpp"
 #include "memory/universe.hpp"
 #include "oops/compressedOops.hpp"
@@ -58,39 +58,38 @@
 using metaspace::ClassLoaderMetaspace;
 using metaspace::CommitLimiter;
 using metaspace::MetaspaceType;
-using metaspace::MetadataType;
 using metaspace::MetaspaceReporter;
 using metaspace::RunningCounters;
 using metaspace::VirtualSpaceList;
 
 
 // Used by MetaspaceCounters
-size_t MetaspaceUtils::free_chunks_total_words(MetadataType mdtype) {
-  return is_class(mdtype) ? RunningCounters::free_chunks_words_class() : RunningCounters::free_chunks_words_nonclass();
+size_t MetaspaceUtils::free_chunks_total_words(Metaspace::MetadataType mdtype) {
+  return metaspace::is_class(mdtype) ? RunningCounters::free_chunks_words_class() : RunningCounters::free_chunks_words_nonclass();
 }
 
 size_t MetaspaceUtils::used_words() {
   return RunningCounters::used_words();
 }
 
-size_t MetaspaceUtils::used_words(MetadataType mdtype) {
-  return is_class(mdtype) ? RunningCounters::used_words_class() : RunningCounters::used_words_nonclass();
+size_t MetaspaceUtils::used_words(Metaspace::MetadataType mdtype) {
+  return metaspace::is_class(mdtype) ? RunningCounters::used_words_class() : RunningCounters::used_words_nonclass();
 }
 
 size_t MetaspaceUtils::reserved_words() {
   return RunningCounters::reserved_words();
 }
 
-size_t MetaspaceUtils::reserved_words(MetadataType mdtype) {
-  return is_class(mdtype) ? RunningCounters::reserved_words_class() : RunningCounters::reserved_words_nonclass();
+size_t MetaspaceUtils::reserved_words(Metaspace::MetadataType mdtype) {
+  return metaspace::is_class(mdtype) ? RunningCounters::reserved_words_class() : RunningCounters::reserved_words_nonclass();
 }
 
 size_t MetaspaceUtils::committed_words() {
   return RunningCounters::committed_words();
 }
 
-size_t MetaspaceUtils::committed_words(MetadataType mdtype) {
-  return is_class(mdtype) ? RunningCounters::committed_words_class() : RunningCounters::committed_words_nonclass();
+size_t MetaspaceUtils::committed_words(Metaspace::MetadataType mdtype) {
+  return metaspace::is_class(mdtype) ? RunningCounters::committed_words_class() : RunningCounters::committed_words_nonclass();
 }
 
 
@@ -139,7 +138,7 @@
 
 
 // Prints an ASCII representation of the given space.
-void MetaspaceUtils::print_metaspace_map(outputStream* out, MetadataType mdtype) {
+void MetaspaceUtils::print_metaspace_map(outputStream* out, Metaspace::MetadataType mdtype) {
   out->print_cr("-- not yet implemented ---");
 }
 
@@ -174,7 +173,7 @@
                 reserved_bytes()/K);
 
   if (Metaspace::using_class_space()) {
-    const MetadataType ct = metaspace::ClassType;
+    const Metaspace::MetadataType ct = Metaspace::ClassType;
     out->print_cr("  class space    "
                   "used "      SIZE_FORMAT "K, "
                   "committed " SIZE_FORMAT "K, "
@@ -337,7 +336,7 @@
 bool MetaspaceGC::can_expand(size_t word_size, bool is_class) {
   // Check if the compressed class space is full.
   if (is_class && Metaspace::using_class_space()) {
-    size_t class_committed = MetaspaceUtils::committed_bytes(metaspace::ClassType);
+    size_t class_committed = MetaspaceUtils::committed_bytes(Metaspace::ClassType);
     if (class_committed + word_size * BytesPerWord > CompressedClassSpaceSize) {
       log_trace(gc, metaspace, freelist)("Cannot expand %s metaspace by " SIZE_FORMAT " words (CompressedClassSpaceSize = " SIZE_FORMAT " words)",
                 (is_class ? "class" : "non-class"), word_size, CompressedClassSpaceSize / sizeof(MetaWord));
@@ -862,7 +861,7 @@
   assert(loader_data != NULL, "Should never pass around a NULL loader_data. "
         "ClassLoaderData::the_null_class_loader_data() should have been used.");
 
-  MetadataType mdtype = (type == MetaspaceObj::ClassType) ? metaspace::ClassType : metaspace::NonClassType;
+  Metaspace::MetadataType mdtype = (type == MetaspaceObj::ClassType) ? Metaspace::ClassType : Metaspace::NonClassType;
 
   // Try to allocate metadata.
   MetaWord* result = loader_data->metaspace_non_null()->allocate(word_size, mdtype);
@@ -907,7 +906,7 @@
   Log(gc, metaspace, freelist, oom) log;
   if (log.is_info()) {
     log.info("Metaspace (%s) allocation failed for size " SIZE_FORMAT,
-             is_class(mdtype) ? "class" : "data", word_size);
+             metaspace::is_class(mdtype) ? "class" : "data", word_size);
     ResourceMark rm;
     if (log.is_debug()) {
       if (loader_data->metaspace_or_null() != NULL) {
@@ -922,10 +921,10 @@
 
   // Which limit did we hit? CompressedClassSpaceSize or MaxMetaspaceSize?
   bool out_of_compressed_class_space = false;
-  if (is_class(mdtype)) {
+  if (metaspace::is_class(mdtype)) {
     ClassLoaderMetaspace* metaspace = loader_data->metaspace_non_null();
     out_of_compressed_class_space =
-      MetaspaceUtils::committed_bytes(metaspace::ClassType) +
+      MetaspaceUtils::committed_bytes(Metaspace::ClassType) +
       // TODO: Okay this is just cheesy.
       // Of course this may fail and return incorrect results.
       // Think this over - we need some clean way to remember which limit
--- a/src/hotspot/share/memory/metaspace.hpp	Tue Nov 26 11:29:20 2019 +0100
+++ b/src/hotspot/share/memory/metaspace.hpp	Tue Nov 26 16:21:29 2019 +0100
@@ -26,7 +26,6 @@
 
 #include "memory/allocation.hpp"
 #include "memory/memRegion.hpp"
-#include "memory/metaspace/metaspaceEnums.hpp"
 #include "memory/metaspaceChunkFreeListSummary.hpp"
 #include "memory/virtualspace.hpp"
 #include "runtime/globals.hpp"
@@ -86,7 +85,16 @@
 // Namespace for important central static functions
 // (auxiliary stuff goes into MetaspaceUtils)
 class Metaspace : public AllStatic {
+public:
+  // Will eventually be moved to metaspaceEnums.hpp and into the metaspace::.. namespace;
+  // for now keep here to keep diff in non-metaspace coding small.
+  enum MetadataType {
+    ClassType,
+    NonClassType,
+    MetadataTypeCount
+  };
 
+private:
   friend class MetaspaceShared;
 
   // Base and size of the compressed class space.
@@ -153,7 +161,7 @@
   static void purge();
 
   static void report_metadata_oome(ClassLoaderData* loader_data, size_t word_size,
-                                   MetaspaceObj::Type type, metaspace::MetadataType mdtype, TRAPS);
+                                   MetaspaceObj::Type type, Metaspace::MetadataType mdtype, TRAPS);
 
   static void print_compressed_class_space(outputStream* st, const char* requested_addr = 0) NOT_LP64({});
 
@@ -249,34 +257,34 @@
 
   // Committed space actually in use by Metadata
   static size_t used_words();
-  static size_t used_words(metaspace::MetadataType mdtype);
+  static size_t used_words(Metaspace::MetadataType mdtype);
 
   // Space committed for Metaspace
   static size_t committed_words();
-  static size_t committed_words(metaspace::MetadataType mdtype);
+  static size_t committed_words(Metaspace::MetadataType mdtype);
 
   // Space reserved for Metaspace
   static size_t reserved_words();
-  static size_t reserved_words(metaspace::MetadataType mdtype);
+  static size_t reserved_words(Metaspace::MetadataType mdtype);
 
   // _bytes() variants for convenience...
   static size_t used_bytes()                                    { return used_words() * BytesPerWord; }
-  static size_t used_bytes(metaspace::MetadataType mdtype)      { return used_words(mdtype) * BytesPerWord; }
+  static size_t used_bytes(Metaspace::MetadataType mdtype)      { return used_words(mdtype) * BytesPerWord; }
   static size_t committed_bytes()                               { return committed_words() * BytesPerWord; }
-  static size_t committed_bytes(metaspace::MetadataType mdtype) { return committed_words(mdtype) * BytesPerWord; }
+  static size_t committed_bytes(Metaspace::MetadataType mdtype) { return committed_words(mdtype) * BytesPerWord; }
   static size_t reserved_bytes()                                { return reserved_words() * BytesPerWord; }
-  static size_t reserved_bytes(metaspace::MetadataType mdtype)  { return reserved_words(mdtype) * BytesPerWord; }
+  static size_t reserved_bytes(Metaspace::MetadataType mdtype)  { return reserved_words(mdtype) * BytesPerWord; }
 
   // TODO. Do we need this really? This number is kind of uninformative.
   static size_t capacity_bytes()                                { return 0; }
-  static size_t capacity_bytes(metaspace::MetadataType mdtype)  { return 0; }
+  static size_t capacity_bytes(Metaspace::MetadataType mdtype)  { return 0; }
 
   // Todo. Consolidate.
   // Committed space in freelists
-  static size_t free_chunks_total_words(metaspace::MetadataType mdtype);
+  static size_t free_chunks_total_words(Metaspace::MetadataType mdtype);
 
   // Todo. Implement or Consolidate.
-  static MetaspaceChunkFreeListSummary chunk_free_list_summary(metaspace::MetadataType mdtype) {
+  static MetaspaceChunkFreeListSummary chunk_free_list_summary(Metaspace::MetadataType mdtype) {
     return MetaspaceChunkFreeListSummary(0,0,0,0,0,0,0,0);
   }
 
@@ -284,7 +292,7 @@
   static void print_metaspace_change(const metaspace::MetaspaceSizesSnapshot& pre_meta_values);
 
   // Prints an ASCII representation of the given space.
-  static void print_metaspace_map(outputStream* out, metaspace::MetadataType mdtype);
+  static void print_metaspace_map(outputStream* out, Metaspace::MetadataType mdtype);
 
   // This will print out a basic metaspace usage report but
   // unlike print_report() is guaranteed not to lock or to walk the CLDG.
--- a/src/hotspot/share/memory/metaspace/classLoaderMetaspace.cpp	Tue Nov 26 11:29:20 2019 +0100
+++ b/src/hotspot/share/memory/metaspace/classLoaderMetaspace.cpp	Tue Nov 26 16:21:29 2019 +0100
@@ -48,7 +48,7 @@
   return false;
 }
 
-static bool use_class_space(MetadataType mdType) {
+static bool use_class_space(Metaspace::MetadataType mdType) {
   return use_class_space(is_class(mdType));
 }
 
@@ -107,7 +107,7 @@
 }
 
 // Allocate word_size words from Metaspace.
-MetaWord* ClassLoaderMetaspace::allocate(size_t word_size, MetadataType mdType) {
+MetaWord* ClassLoaderMetaspace::allocate(size_t word_size, Metaspace::MetadataType mdType) {
   Metaspace::assert_not_frozen();
   if (use_class_space(mdType)) {
     return class_space_manager()->allocate(word_size);
@@ -118,7 +118,7 @@
 
 // Attempt to expand the GC threshold to be good for at least another word_size words
 // and allocate. Returns NULL if failure. Used during Metaspace GC.
-MetaWord* ClassLoaderMetaspace::expand_and_allocate(size_t word_size, MetadataType mdType) {
+MetaWord* ClassLoaderMetaspace::expand_and_allocate(size_t word_size, Metaspace::MetadataType mdType) {
   Metaspace::assert_not_frozen();
   size_t delta_bytes = MetaspaceGC::delta_capacity_until_GC(word_size * BytesPerWord);
   assert(delta_bytes > 0, "Must be");
--- a/src/hotspot/share/memory/metaspace/classLoaderMetaspace.hpp	Tue Nov 26 11:29:20 2019 +0100
+++ b/src/hotspot/share/memory/metaspace/classLoaderMetaspace.hpp	Tue Nov 26 16:21:29 2019 +0100
@@ -69,11 +69,11 @@
   MetaspaceType space_type() const { return _space_type; }
 
   // Allocate word_size words from Metaspace.
-  MetaWord* allocate(size_t word_size, MetadataType mdType);
+  MetaWord* allocate(size_t word_size, Metaspace::MetadataType mdType);
 
   // Attempt to expand the GC threshold to be good for at least another word_size words
   // and allocate. Returns NULL if failure. Used during Metaspace GC.
-  MetaWord* expand_and_allocate(size_t word_size, MetadataType mdType);
+  MetaWord* expand_and_allocate(size_t word_size, Metaspace::MetadataType mdType);
 
   // Prematurely returns a metaspace allocation to the _block_freelists
   // because it is not needed anymore.
--- a/src/hotspot/share/memory/metaspace/metaspaceEnums.cpp	Tue Nov 26 11:29:20 2019 +0100
+++ b/src/hotspot/share/memory/metaspace/metaspaceEnums.cpp	Tue Nov 26 16:21:29 2019 +0100
@@ -40,11 +40,11 @@
   return s;
 }
 
-const char* describe_mdtype(MetadataType md) {
+const char* describe_mdtype(Metaspace::MetadataType md) {
   const char* s = NULL;
   switch (md) {
-    case NonClassType: s = "nonclass"; break;
-    case ClassType: s = "class"; break;
+    case Metaspace::NonClassType: s = "nonclass"; break;
+    case Metaspace::ClassType: s = "class"; break;
     default: ShouldNotReachHere();
   }
   return s;
--- a/src/hotspot/share/memory/metaspace/metaspaceEnums.hpp	Tue Nov 26 11:29:20 2019 +0100
+++ b/src/hotspot/share/memory/metaspace/metaspaceEnums.hpp	Tue Nov 26 16:21:29 2019 +0100
@@ -25,6 +25,7 @@
 #ifndef SHARE_MEMORY_METASPACEENUMS_HPP
 #define SHARE_MEMORY_METASPACEENUMS_HPP
 
+#include "memory/metaspace.hpp"
 #include "utilities/debug.hpp"
 
 // MetadataType and MetaspaceType, as well as some convenience functions surrounding them.
@@ -32,23 +33,28 @@
 
 ///////////////////////
 
-enum MetadataType {
-  ClassType,
-  NonClassType,
-  MetadataTypeCount
-};
+/* Moved to metaspace.hpp to keep diff in non-metaspace coding
+ * small. Would like to have this here and in metaspace:: namespace,
+ * eventually.
+ *
+ * enum MetadataType {
+ *  ClassType,
+ *  NonClassType,
+ *  MetadataTypeCount
+ * };
+ */
 
-inline bool is_class(MetadataType md) { return md == ClassType; }
+inline bool is_class(Metaspace::MetadataType md) { return md == Metaspace::ClassType; }
 
-inline MetadataType mdtype_from_bool(bool is_class) { return is_class ? ClassType : NonClassType; }
+inline Metaspace::MetadataType mdtype_from_bool(bool is_class) { return is_class ? Metaspace::ClassType : Metaspace::NonClassType; }
 
-const char* describe_mdtype(MetadataType md);
+const char* describe_mdtype(Metaspace::MetadataType md);
 
 #ifdef ASSERT
-inline bool is_valid_mdtype(MetadataType md) {
-  return (int)md >= 0 && (int)md < MetadataTypeCount;
+inline bool is_valid_mdtype(Metaspace::MetadataType md) {
+  return (int)md >= 0 && (int)md < Metaspace::MetadataTypeCount;
 }
-inline void check_valid_mdtype(MetadataType md) {
+inline void check_valid_mdtype(Metaspace::MetadataType md) {
   assert(is_valid_mdtype(md), "Wrong value for MetadataType: %d", (int) md);
 }
 #endif // ASSERT
--- a/src/hotspot/share/memory/metaspace/metaspaceReport.cpp	Tue Nov 26 11:29:20 2019 +0100
+++ b/src/hotspot/share/memory/metaspace/metaspaceReport.cpp	Tue Nov 26 16:21:29 2019 +0100
@@ -124,14 +124,14 @@
   // for Usage stats (statistics over in-use chunks) all we can print is the
   // used words. We cannot print committed areas, or free/waste areas, of in-use chunks require
   // walking.
-  const size_t used_nc = MetaspaceUtils::used_words(metaspace::NonClassType);
+  const size_t used_nc = MetaspaceUtils::used_words(Metaspace::NonClassType);
 
   print_scaled_words(out, used_nc, scale, 5);
   out->print(" used.");
   out->cr();
 
   if (Metaspace::using_class_space()) {
-    const size_t used_c = MetaspaceUtils::used_words(metaspace::ClassType);
+    const size_t used_c = MetaspaceUtils::used_words(Metaspace::ClassType);
     out->print("      Class:  ");
     print_scaled_words(out, used_c, scale, 5);
     out->print(" used.");
--- a/src/hotspot/share/memory/metaspace/metaspaceSizesSnapshot.cpp	Tue Nov 26 11:29:20 2019 +0100
+++ b/src/hotspot/share/memory/metaspace/metaspaceSizesSnapshot.cpp	Tue Nov 26 16:21:29 2019 +0100
@@ -26,7 +26,7 @@
 #include "precompiled.hpp"
 
 #include "memory/metaspace.hpp"
-#include "memory/metaspace/metaspaceEnums.hpp"
+#include "memory/metaspace.hpp"
 #include "memory/metaspace/metaspaceSizesSnapshot.hpp"
 
 namespace metaspace {
@@ -34,9 +34,9 @@
 MetaspaceSizesSnapshot::MetaspaceSizesSnapshot()
     : _used(MetaspaceUtils::used_bytes()),
       _committed(MetaspaceUtils::committed_bytes()),
-      _non_class_used(MetaspaceUtils::used_bytes(metaspace::NonClassType)),
-      _non_class_committed(MetaspaceUtils::committed_bytes(metaspace::NonClassType)),
-      _class_used(MetaspaceUtils::used_bytes(metaspace::ClassType)),
-      _class_committed(MetaspaceUtils::committed_bytes(metaspace::ClassType)) { }
+      _non_class_used(MetaspaceUtils::used_bytes(Metaspace::NonClassType)),
+      _non_class_committed(MetaspaceUtils::committed_bytes(Metaspace::NonClassType)),
+      _class_used(MetaspaceUtils::used_bytes(Metaspace::ClassType)),
+      _class_committed(MetaspaceUtils::committed_bytes(Metaspace::ClassType)) { }
 
 } // namespace metaspace
--- a/src/hotspot/share/memory/metaspaceCounters.cpp	Tue Nov 26 11:29:20 2019 +0100
+++ b/src/hotspot/share/memory/metaspaceCounters.cpp	Tue Nov 26 16:21:29 2019 +0100
@@ -98,15 +98,15 @@
 MetaspacePerfCounters* CompressedClassSpaceCounters::_perf_counters = NULL;
 
 size_t CompressedClassSpaceCounters::used() {
-  return MetaspaceUtils::used_bytes(metaspace::ClassType);
+  return MetaspaceUtils::used_bytes(Metaspace::ClassType);
 }
 
 size_t CompressedClassSpaceCounters::capacity() {
-  return MetaspaceUtils::committed_bytes(metaspace::ClassType);
+  return MetaspaceUtils::committed_bytes(Metaspace::ClassType);
 }
 
 size_t CompressedClassSpaceCounters::max_capacity() {
-  return MetaspaceUtils::reserved_bytes(metaspace::ClassType);
+  return MetaspaceUtils::reserved_bytes(Metaspace::ClassType);
 }
 
 void CompressedClassSpaceCounters::update_performance_counters() {
--- a/src/hotspot/share/memory/metaspaceTracer.cpp	Tue Nov 26 11:29:20 2019 +0100
+++ b/src/hotspot/share/memory/metaspaceTracer.cpp	Tue Nov 26 16:21:29 2019 +0100
@@ -43,14 +43,14 @@
 void MetaspaceTracer::report_metaspace_allocation_failure(ClassLoaderData *cld,
                                                           size_t word_size,
                                                           MetaspaceObj::Type objtype,
-                                                          metaspace::MetadataType mdtype) const {
+                                                          Metaspace::MetadataType mdtype) const {
   send_allocation_failure_event<EventMetaspaceAllocationFailure>(cld, word_size, objtype, mdtype);
 }
 
 void MetaspaceTracer::report_metadata_oom(ClassLoaderData *cld,
                                          size_t word_size,
                                          MetaspaceObj::Type objtype,
-                                         metaspace::MetadataType mdtype) const {
+                                         Metaspace::MetadataType mdtype) const {
   send_allocation_failure_event<EventMetaspaceOOM>(cld, word_size, objtype, mdtype);
 }
 
@@ -58,7 +58,7 @@
 void MetaspaceTracer::send_allocation_failure_event(ClassLoaderData *cld,
                                                     size_t word_size,
                                                     MetaspaceObj::Type objtype,
-                                                    metaspace::MetadataType mdtype) const {
+                                                    Metaspace::MetadataType mdtype) const {
   E event;
   if (event.should_commit()) {
     event.set_classLoader(cld);
--- a/src/hotspot/share/memory/metaspaceTracer.hpp	Tue Nov 26 11:29:20 2019 +0100
+++ b/src/hotspot/share/memory/metaspaceTracer.hpp	Tue Nov 26 16:21:29 2019 +0100
@@ -36,7 +36,7 @@
   void send_allocation_failure_event(ClassLoaderData *cld,
                                      size_t word_size,
                                      MetaspaceObj::Type objtype,
-                                     metaspace::MetadataType mdtype) const;
+                                     Metaspace::MetadataType mdtype) const;
  public:
   void report_gc_threshold(size_t old_val,
                            size_t new_val,
@@ -44,11 +44,11 @@
   void report_metaspace_allocation_failure(ClassLoaderData *cld,
                                            size_t word_size,
                                            MetaspaceObj::Type objtype,
-                                           metaspace::MetadataType mdtype) const;
+                                           Metaspace::MetadataType mdtype) const;
   void report_metadata_oom(ClassLoaderData *cld,
                            size_t word_size,
                            MetaspaceObj::Type objtype,
-                           metaspace::MetadataType mdtype) const;
+                           Metaspace::MetadataType mdtype) const;
 
 };
 
--- a/src/hotspot/share/services/memReporter.cpp	Tue Nov 26 11:29:20 2019 +0100
+++ b/src/hotspot/share/services/memReporter.cpp	Tue Nov 26 16:21:29 2019 +0100
@@ -23,7 +23,10 @@
  */
 #include "precompiled.hpp"
 
+
 #include "memory/allocation.hpp"
+#include "memory/metaspace.hpp"
+#include "memory/metaspace/metaspaceEnums.hpp"
 #include "services/mallocTracker.hpp"
 #include "services/memReporter.hpp"
 #include "services/threadStackTracker.hpp"
@@ -200,16 +203,16 @@
         amount_in_current_scale(_malloc_snapshot->malloc_overhead()->size()), scale);
     } else if (flag == mtClass) {
       // Metadata information
-      report_metadata(metaspace::NonClassType);
+      report_metadata(Metaspace::NonClassType);
       if (Metaspace::using_class_space()) {
-        report_metadata(metaspace::ClassType);
+        report_metadata(Metaspace::ClassType);
       }
     }
     out->print_cr(" ");
   }
 }
 
-void MemSummaryReporter::report_metadata(metaspace::MetadataType mdType) const {
+void MemSummaryReporter::report_metadata(Metaspace::MetadataType mdType) const {
   DEBUG_ONLY(metaspace::check_valid_mdtype(mdType));
   const char* const name = metaspace::describe_mdtype(mdType);
 
@@ -593,13 +596,13 @@
 
 void MemSummaryDiffReporter::print_metaspace_diff(const MetaspaceSnapshot* current_ms,
                                                   const MetaspaceSnapshot* early_ms) const {
-  print_metaspace_diff(metaspace::NonClassType, current_ms, early_ms);
+  print_metaspace_diff(Metaspace::NonClassType, current_ms, early_ms);
   if (Metaspace::using_class_space()) {
-    print_metaspace_diff(metaspace::ClassType, current_ms, early_ms);
+    print_metaspace_diff(Metaspace::ClassType, current_ms, early_ms);
   }
 }
 
-void MemSummaryDiffReporter::print_metaspace_diff(metaspace::MetadataType mdType,
+void MemSummaryDiffReporter::print_metaspace_diff(Metaspace::MetadataType mdType,
                                                   const MetaspaceSnapshot* current_ms,
                                                   const MetaspaceSnapshot* early_ms) const {
   DEBUG_ONLY(metaspace::check_valid_mdtype(mdType));
--- a/src/hotspot/share/services/memReporter.hpp	Tue Nov 26 11:29:20 2019 +0100
+++ b/src/hotspot/share/services/memReporter.hpp	Tue Nov 26 16:21:29 2019 +0100
@@ -27,7 +27,7 @@
 
 #if INCLUDE_NMT
 
-#include "memory/metaspace/metaspaceEnums.hpp"
+#include "memory/metaspace.hpp"
 #include "oops/instanceKlass.hpp"
 #include "services/memBaseline.hpp"
 #include "services/nmtCommon.hpp"
@@ -114,7 +114,7 @@
   void report_summary_of_type(MEMFLAGS type, MallocMemory* malloc_memory,
     VirtualMemory* virtual_memory);
 
-  void report_metadata(metaspace::MetadataType type) const;
+  void report_metadata(Metaspace::MetadataType type) const;
 };
 
 /*
@@ -189,7 +189,7 @@
 
   void print_metaspace_diff(const MetaspaceSnapshot* current_ms,
                             const MetaspaceSnapshot* early_ms) const;
-  void print_metaspace_diff(metaspace::MetadataType type,
+  void print_metaspace_diff(Metaspace::MetadataType type,
     const MetaspaceSnapshot* current_ms, const MetaspaceSnapshot* early_ms) const;
 };
 
--- a/src/hotspot/share/services/memoryPool.cpp	Tue Nov 26 11:29:20 2019 +0100
+++ b/src/hotspot/share/services/memoryPool.cpp	Tue Nov 26 16:21:29 2019 +0100
@@ -25,7 +25,6 @@
 #include "precompiled.hpp"
 #include "classfile/systemDictionary.hpp"
 #include "classfile/vmSymbols.hpp"
-#include "memory/metaspace/metaspaceEnums.hpp"
 #include "memory/metaspace.hpp"
 #include "oops/oop.inline.hpp"
 #include "runtime/handles.inline.hpp"
@@ -212,10 +211,10 @@
   MemoryPool("Compressed Class Space", NonHeap, 0, CompressedClassSpaceSize, true, false) { }
 
 size_t CompressedKlassSpacePool::used_in_bytes() {
-  return MetaspaceUtils::used_bytes(metaspace::ClassType);
+  return MetaspaceUtils::used_bytes(Metaspace::ClassType);
 }
 
 MemoryUsage CompressedKlassSpacePool::get_memory_usage() {
-  size_t committed = MetaspaceUtils::committed_bytes(metaspace::ClassType);
+  size_t committed = MetaspaceUtils::committed_bytes(Metaspace::ClassType);
   return MemoryUsage(initial_size(), used_in_bytes(), committed, max_size());
 }
--- a/src/hotspot/share/services/virtualMemoryTracker.cpp	Tue Nov 26 11:29:20 2019 +0100
+++ b/src/hotspot/share/services/virtualMemoryTracker.cpp	Tue Nov 26 16:21:29 2019 +0100
@@ -602,8 +602,8 @@
 
 // Metaspace Support
 MetaspaceSnapshot::MetaspaceSnapshot() {
-  for (int index = (int)metaspace::ClassType; index < (int)metaspace::MetadataTypeCount; index ++) {
-    metaspace::MetadataType type = (metaspace::MetadataType)index;
+  for (int index = (int)Metaspace::ClassType; index < (int)Metaspace::MetadataTypeCount; index ++) {
+    Metaspace::MetadataType type = (Metaspace::MetadataType)index;
     assert_valid_metadata_type(type);
     _reserved_in_bytes[type]  = 0;
     _committed_in_bytes[type] = 0;
@@ -612,7 +612,7 @@
   }
 }
 
-void MetaspaceSnapshot::snapshot(metaspace::MetadataType type, MetaspaceSnapshot& mss) {
+void MetaspaceSnapshot::snapshot(Metaspace::MetadataType type, MetaspaceSnapshot& mss) {
   assert_valid_metadata_type(type);
 
   mss._reserved_in_bytes[type]   = MetaspaceUtils::reserved_bytes(type);
@@ -626,8 +626,8 @@
 }
 
 void MetaspaceSnapshot::snapshot(MetaspaceSnapshot& mss) {
-  snapshot(metaspace::ClassType, mss);
+  snapshot(Metaspace::ClassType, mss);
   if (Metaspace::using_class_space()) {
-    snapshot(metaspace::NonClassType, mss);
+    snapshot(Metaspace::NonClassType, mss);
   }
 }
--- a/src/hotspot/share/services/virtualMemoryTracker.hpp	Tue Nov 26 11:29:20 2019 +0100
+++ b/src/hotspot/share/services/virtualMemoryTracker.hpp	Tue Nov 26 16:21:29 2019 +0100
@@ -28,7 +28,7 @@
 #if INCLUDE_NMT
 
 #include "memory/allocation.hpp"
-#include "memory/metaspace/metaspaceEnums.hpp"
+#include "memory/metaspace.hpp"
 #include "services/allocationSite.hpp"
 #include "services/nmtCommon.hpp"
 #include "utilities/linkedlist.hpp"
@@ -420,25 +420,25 @@
 
 class MetaspaceSnapshot : public ResourceObj {
 private:
-  size_t  _reserved_in_bytes[metaspace::MetadataTypeCount];
-  size_t  _committed_in_bytes[metaspace::MetadataTypeCount];
-  size_t  _used_in_bytes[metaspace::MetadataTypeCount];
-  size_t  _free_in_bytes[metaspace::MetadataTypeCount];
+  size_t  _reserved_in_bytes[Metaspace::MetadataTypeCount];
+  size_t  _committed_in_bytes[Metaspace::MetadataTypeCount];
+  size_t  _used_in_bytes[Metaspace::MetadataTypeCount];
+  size_t  _free_in_bytes[Metaspace::MetadataTypeCount];
 
 public:
   MetaspaceSnapshot();
-  size_t reserved_in_bytes(metaspace::MetadataType type)   const { assert_valid_metadata_type(type); return _reserved_in_bytes[type]; }
-  size_t committed_in_bytes(metaspace::MetadataType type)  const { assert_valid_metadata_type(type); return _committed_in_bytes[type]; }
-  size_t used_in_bytes(metaspace::MetadataType type)       const { assert_valid_metadata_type(type); return _used_in_bytes[type]; }
-  size_t free_in_bytes(metaspace::MetadataType type)       const { assert_valid_metadata_type(type); return _free_in_bytes[type]; }
+  size_t reserved_in_bytes(Metaspace::MetadataType type)   const { assert_valid_metadata_type(type); return _reserved_in_bytes[type]; }
+  size_t committed_in_bytes(Metaspace::MetadataType type)  const { assert_valid_metadata_type(type); return _committed_in_bytes[type]; }
+  size_t used_in_bytes(Metaspace::MetadataType type)       const { assert_valid_metadata_type(type); return _used_in_bytes[type]; }
+  size_t free_in_bytes(Metaspace::MetadataType type)       const { assert_valid_metadata_type(type); return _free_in_bytes[type]; }
 
   static void snapshot(MetaspaceSnapshot& s);
 
 private:
-  static void snapshot(metaspace::MetadataType type, MetaspaceSnapshot& s);
+  static void snapshot(Metaspace::MetadataType type, MetaspaceSnapshot& s);
 
-  static void assert_valid_metadata_type(metaspace::MetadataType type) {
-    assert(type == metaspace::ClassType || type == metaspace::NonClassType,
+  static void assert_valid_metadata_type(Metaspace::MetadataType type) {
+    assert(type == Metaspace::ClassType || type == Metaspace::NonClassType,
       "Invalid metadata type");
   }
 };
--- a/test/hotspot/gtest/metaspace/test_is_metaspace_obj.cpp	Tue Nov 26 11:29:20 2019 +0100
+++ b/test/hotspot/gtest/metaspace/test_is_metaspace_obj.cpp	Tue Nov 26 16:21:29 2019 +0100
@@ -50,7 +50,7 @@
     delete _lock;
   }
 
-  void do_test(MetadataType mdType) {
+  void do_test(Metaspace::MetadataType mdType) {
     _lock = new Mutex(Monitor::native, "gtest-IsMetaspaceObjTest-lock", false, Monitor::_safepoint_check_never);
     {
       MutexLocker ml(_lock, Mutex::_no_safepoint_check_flag);
@@ -68,7 +68,7 @@
 
     // Test VirtualSpaceList::contains
     const VirtualSpaceList* const vslist =
-        (mdType == ClassType && Metaspace::using_class_space()) ?
+        (mdType == Metaspace::ClassType && Metaspace::using_class_space()) ?
          VirtualSpaceList::vslist_class() : VirtualSpaceList::vslist_nonclass();
 
     ASSERT_TRUE(vslist->contains((MetaWord*)p));
@@ -104,11 +104,11 @@
 
 TEST_VM(metaspace, is_metaspace_obj_non_class) {
   MetaspaceIsMetaspaceObjTest test;
-  test.do_test(NonClassType);
+  test.do_test(Metaspace::NonClassType);
 }
 
 TEST_VM(metaspace, is_metaspace_obj_class) {
   MetaspaceIsMetaspaceObjTest test;
-  test.do_test(ClassType);
+  test.do_test(Metaspace::ClassType);
 }
 
--- a/test/hotspot/gtest/metaspace/test_metaspaceUtils.cpp	Tue Nov 26 11:29:20 2019 +0100
+++ b/test/hotspot/gtest/metaspace/test_metaspaceUtils.cpp	Tue Nov 26 16:21:29 2019 +0100
@@ -31,7 +31,7 @@
   size_t reserved = MetaspaceUtils::reserved_bytes();
   EXPECT_GT(reserved, 0UL);
 
-  size_t reserved_metadata = MetaspaceUtils::reserved_bytes(metaspace::NonClassType);
+  size_t reserved_metadata = MetaspaceUtils::reserved_bytes(Metaspace::NonClassType);
   EXPECT_GT(reserved_metadata, 0UL);
   EXPECT_LE(reserved_metadata, reserved);
 }
@@ -43,7 +43,7 @@
   size_t reserved = MetaspaceUtils::reserved_bytes();
   EXPECT_GT(reserved, 0UL);
 
-  size_t reserved_class = MetaspaceUtils::reserved_bytes(metaspace::ClassType);
+  size_t reserved_class = MetaspaceUtils::reserved_bytes(Metaspace::ClassType);
   EXPECT_GT(reserved_class, 0UL);
   EXPECT_LE(reserved_class, reserved);
 }
@@ -55,7 +55,7 @@
   size_t reserved  = MetaspaceUtils::reserved_bytes();
   EXPECT_LE(committed, reserved);
 
-  size_t committed_metadata = MetaspaceUtils::committed_bytes(metaspace::NonClassType);
+  size_t committed_metadata = MetaspaceUtils::committed_bytes(Metaspace::NonClassType);
   EXPECT_GT(committed_metadata, 0UL);
   EXPECT_LE(committed_metadata, committed);
 }
@@ -67,7 +67,7 @@
   size_t committed = MetaspaceUtils::committed_bytes();
   EXPECT_GT(committed, 0UL);
 
-  size_t committed_class = MetaspaceUtils::committed_bytes(metaspace::ClassType);
+  size_t committed_class = MetaspaceUtils::committed_bytes(Metaspace::ClassType);
   EXPECT_GT(committed_class, 0UL);
   EXPECT_LE(committed_class, committed);
 }