src/hotspot/share/memory/metaspace/printCLDMetaspaceInfoClosure.cpp

rev 50187 : imported patch metaspace-split
rev 50188 : [mq]: 8203219-VM.metaspace-show-loaded-classes

@@ -22,31 +22,44 @@
  *
  */
 #include "precompiled.hpp"
 #include "classfile/classLoaderData.hpp"
 #include "memory/metaspace/printCLDMetaspaceInfoClosure.hpp"
+#include "memory/metaspace/printMetaspaceInfoKlassClosure.hpp"
 #include "memory/resourceArea.hpp"
 #include "runtime/safepoint.hpp"
 #include "utilities/globalDefinitions.hpp"
 #include "utilities/ostream.hpp"
 
 
 namespace metaspace {
 
-PrintCLDMetaspaceInfoClosure::PrintCLDMetaspaceInfoClosure(outputStream* out, size_t scale, bool do_print, bool break_down_by_chunktype)
-: _out(out), _scale(scale), _do_print(do_print), _break_down_by_chunktype(break_down_by_chunktype)
-, _num_loaders(0)
+PrintCLDMetaspaceInfoClosure::PrintCLDMetaspaceInfoClosure(outputStream* out, size_t scale, bool do_print,
+    bool do_print_classes, bool break_down_by_chunktype)
+: _out(out), _scale(scale), _do_print(do_print), _do_print_classes(do_print_classes)
+, _break_down_by_chunktype(break_down_by_chunktype)
+, _num_loaders(0), _num_loaders_unloading(0), _num_loaders_without_metaspace(0)
 {
   memset(_num_loaders_by_spacetype, 0, sizeof(_num_loaders_by_spacetype));
 }
 
+static const char* classes_plural(uintx num) {
+  return num == 1 ? "" : "es";
+}
+
 void PrintCLDMetaspaceInfoClosure::do_cld(ClassLoaderData* cld) {
 
   assert(SafepointSynchronize::is_at_safepoint(), "Must be at a safepoint");
 
+  if (cld->is_unloading()) {
+    _num_loaders_unloading ++;
+    return;
+  }
+
   ClassLoaderMetaspace* msp = cld->metaspace_or_null();
   if (msp == NULL) {
+    _num_loaders_without_metaspace ++;
     return;
   }
 
   // Collect statistics for this class loader metaspace
   ClassLoaderMetaspaceStatistics this_cld_stat;

@@ -68,14 +81,37 @@
     } else {
       ResourceMark rm;
       _out->print("ClassLoaderData " PTR_FORMAT " for %s", p2i(cld), cld->loader_name());
     }
 
-    if (cld->is_unloading()) {
-      _out->print(" (unloading)");
+    if (_do_print_classes) {
+      streamIndentor sti(_out, 6);
+      _out->cr_indent();
+      _out->print("Loaded classes: ");
+      PrintMetaspaceInfoKlassClosure pkic(_out, true);
+      cld->classes_do(&pkic);
+      _out->cr_indent();
+      _out->print("-total-: ");
+      _out->print(UINTX_FORMAT " class%s", pkic._num_classes, classes_plural(pkic._num_classes));
+      if (pkic._num_instance_classes > 0 || pkic._num_array_classes > 0) {
+        _out->print(" (");
+        if (pkic._num_instance_classes > 0) {
+          _out->print(UINTX_FORMAT " instance class%s", pkic._num_instance_classes,
+              classes_plural(pkic._num_instance_classes));
+        }
+        if (pkic._num_array_classes > 0) {
+          if (pkic._num_instance_classes > 0) {
+            _out->print(", ");
+          }
+          _out->print(UINTX_FORMAT " array class%s", pkic._num_array_classes,
+              classes_plural(pkic._num_array_classes));
+        }
+        _out->print(").");
+      }
     }
 
+    _out->cr();
     this_cld_stat.print_on(_out, _scale, _break_down_by_chunktype);
     _out->cr();
 
   }