src/share/vm/services/memoryPool.cpp

rev 4165 : 8000754: NPG: Implement a MemoryPool MXBean for Metaspace

@@ -24,10 +24,11 @@
 
 #include "precompiled.hpp"
 #include "classfile/systemDictionary.hpp"
 #include "classfile/vmSymbols.hpp"
 #include "oops/oop.inline.hpp"
+#include "runtime/globals.hpp"
 #include "runtime/handles.inline.hpp"
 #include "runtime/javaCalls.hpp"
 #include "services/lowMemoryDetector.hpp"
 #include "services/management.hpp"
 #include "services/memoryManager.hpp"

@@ -254,5 +255,39 @@
   size_t committed = _codeHeap->capacity();
   size_t maxSize   = (available_for_allocation() ? max_size() : 0);
 
   return MemoryUsage(initial_size(), used, committed, maxSize);
 }
+
+MetaspacePoolBase::MetaspacePoolBase(const char *name,
+                                     Metaspace::MetadataType md_type,
+                                     size_t max_size) :
+  _md_type(md_type),
+  MemoryPool(name, NonHeap, MetaspaceAux::capacity_in_bytes(_md_type), max_size,
+             true, false) {
+}
+
+size_t MetaspacePoolBase::used_in_bytes() {
+  return MetaspaceAux::used_in_bytes(_md_type);
+}
+
+MemoryUsage MetaspacePoolBase::get_memory_usage() {
+  size_t used = MetaspaceAux::used_in_bytes(_md_type);
+  size_t committed = MetaspaceAux::capacity_in_bytes(_md_type);
+  return MemoryUsage(initial_size(), used, committed, max_size());
+}
+
+ClassMetaspacePool::ClassMetaspacePool() :
+  MetaspacePoolBase("Class Metaspace", Metaspace::ClassType, calculate_max_size()) {
+}
+
+size_t ClassMetaspacePool::calculate_max_size() {
+  return UseCompressedKlassPointers ? ClassMetaspaceSize : _undefined_max_size;
+}
+
+MetaspacePool::MetaspacePool() :
+  MetaspacePoolBase("Metaspace", Metaspace::NonClassType, calculate_max_size()) {
+}
+
+size_t MetaspacePool::calculate_max_size() {
+  return FLAG_IS_CMDLINE(MaxMetaspaceSize) ? MaxMetaspaceSize : _undefined_max_size;
+}