8249096: Clean up code for DumpLoadedClassList

Clean up code for DumpLoadedClassList output code, centralize in InstanceKlass.

Reviewed-by: iklam, dcubed

src/hotspot/share/classfile/classFileParser.cpp

@@ -5474,11 +5474,7 @@ void ClassFileParser::fill_instance_klass(InstanceKlass* ik,
   ClassLoadingService::notify_class_loaded(ik, false /* not shared class */);
 
   if (!is_internal()) {
-    if (log_is_enabled(Info, class, load)) {
-      ResourceMark rm;
-      const char* module_name = (module_entry->name() == NULL) ? UNNAMED_MODULE : module_entry->name()->as_C_string();
-      ik->print_class_load_logging(_loader_data, module_name, _stream);
-    }
+    ik->print_class_load_logging(_loader_data, module_entry, _stream);
 
     if (ik->minor_version() == JAVA_PREVIEW_MINOR_VERSION &&
         ik->major_version() == JVM_CLASSFILE_MAJOR_VERSION &&
@@ -5985,44 +5981,6 @@ void ClassFileParser::parse_stream(const ClassFileStream* const stream,
       }
       ls.cr();
     }
-
-#if INCLUDE_CDS
-    if (DumpLoadedClassList != NULL && stream->source() != NULL && classlist_file->is_open()) {
-      if (!ClassLoader::has_jrt_entry()) {
-        warning("DumpLoadedClassList and CDS are not supported in exploded build");
-        DumpLoadedClassList = NULL;
-      } else if (SystemDictionaryShared::is_sharing_possible(_loader_data) &&
-                 !_is_hidden &&
-                 _unsafe_anonymous_host == NULL) {
-        // Only dump the classes that can be stored into CDS archive.
-        // Hidden and unsafe anonymous classes such as generated LambdaForm classes are also not included.
-        oop class_loader = _loader_data->class_loader();
-        ResourceMark rm(THREAD);
-        bool skip = false;
-        if (class_loader == NULL || SystemDictionary::is_platform_class_loader(class_loader)) {
-          // For the boot and platform class loaders, skip classes that are not found in the
-          // java runtime image, such as those found in the --patch-module entries.
-          // These classes can't be loaded from the archive during runtime.
-          if (!stream->from_boot_loader_modules_image() && strncmp(stream->source(), "jrt:", 4) != 0) {
-            skip = true;
-          }
-
-          if (class_loader == NULL && ClassLoader::contains_append_entry(stream->source())) {
-            // .. but don't skip the boot classes that are loaded from -Xbootclasspath/a
-            // as they can be loaded from the archive during runtime.
-            skip = false;
-          }
-        }
-        if (skip) {
-          tty->print_cr("skip writing class %s from source %s to classlist file",
-            _class_name->as_C_string(), stream->source());
-        } else {
-          classlist_file->print_cr("%s", _class_name->as_C_string());
-          classlist_file->flush();
-        }
-      }
-    }
-#endif
   }
 
   // SUPERKLASS

src/hotspot/share/classfile/systemDictionary.cpp

@@ -1470,15 +1470,6 @@ void SystemDictionary::load_shared_class_misc(InstanceKlass* ik, ClassLoaderData
     ik->set_classpath_index(path_index, THREAD);
   }
 
-  if (DumpLoadedClassList != NULL && classlist_file->is_open()) {
-    // Only dump the classes that can be stored into CDS archive
-    if (SystemDictionaryShared::is_sharing_possible(loader_data)) {
-      ResourceMark rm(THREAD);
-      classlist_file->print_cr("%s", ik->name()->as_C_string());
-      classlist_file->flush();
-    }
-  }
-
   // notify a class loaded from shared object
   ClassLoadingService::notify_class_loaded(ik, true /* shared class */);
 

src/hotspot/share/oops/instanceKlass.cpp

@@ -3599,8 +3599,10 @@ const char* InstanceKlass::internal_name() const {
 }
 
 void InstanceKlass::print_class_load_logging(ClassLoaderData* loader_data,
-                                             const char* module_name,
+                                             const ModuleEntry* module_entry,
                                              const ClassFileStream* cfs) const {
+  log_to_classlist(cfs);
+
   if (!log_is_enabled(Info, class, load)) {
     return;
   }
@@ -3615,6 +3617,7 @@ void InstanceKlass::print_class_load_logging(ClassLoaderData* loader_data,
   // Source
   if (cfs != NULL) {
     if (cfs->source() != NULL) {
+      const char* module_name = (module_entry->name() == NULL) ? UNNAMED_MODULE : module_entry->name()->as_C_string();
       if (module_name != NULL) {
         // When the boot loader created the stream, it didn't know the module name
         // yet. Let's format it now.
@@ -4190,3 +4193,52 @@ unsigned char * InstanceKlass::get_cached_class_file_bytes() {
   return VM_RedefineClasses::get_cached_class_file_bytes(_cached_class_file);
 }
 #endif
+
+void InstanceKlass::log_to_classlist(const ClassFileStream* stream) const {
+#if INCLUDE_CDS
+  if (DumpLoadedClassList && classlist_file->is_open()) {
+    if (!ClassLoader::has_jrt_entry()) {
+       warning("DumpLoadedClassList and CDS are not supported in exploded build");
+       DumpLoadedClassList = NULL;
+       return;
+    }
+    ClassLoaderData* loader_data = class_loader_data();
+    if (!SystemDictionaryShared::is_sharing_possible(loader_data)) {
+      return;
+    }
+    bool skip = false;
+    if (is_shared()) {
+      assert(stream == NULL, "shared class with stream");
+    } else {
+      assert(stream != NULL, "non-shared class without stream");
+      // skip hidden class and unsafe anonymous class.
+      if ( is_hidden() || unsafe_anonymous_host() != NULL) {
+        return;
+      }
+      oop class_loader = loader_data->class_loader();
+      if (class_loader == NULL || SystemDictionary::is_platform_class_loader(class_loader)) {
+        // For the boot and platform class loaders, skip classes that are not found in the
+        // java runtime image, such as those found in the --patch-module entries.
+        // These classes can't be loaded from the archive during runtime.
+        if (!stream->from_boot_loader_modules_image() && strncmp(stream->source(), "jrt:", 4) != 0) {
+          skip = true;
+        }
+
+        if (class_loader == NULL && ClassLoader::contains_append_entry(stream->source())) {
+          // .. but don't skip the boot classes that are loaded from -Xbootclasspath/a
+          // as they can be loaded from the archive during runtime.
+          skip = false;
+        }
+      }
+    }
+    ResourceMark rm;
+    if (skip) {
+      tty->print_cr("skip writing class %s from source %s to classlist file",
+                    name()->as_C_string(), stream->source());
+    } else {
+      classlist_file->print_cr("%s", name()->as_C_string());
+      classlist_file->flush();
+    }
+  }
+#endif // INCLUDE_CDS
+}

src/hotspot/share/oops/instanceKlass.hpp

@@ -1322,6 +1322,8 @@ private:
   void link_previous_versions(InstanceKlass* pv) { _previous_versions = pv; }
   void mark_newly_obsolete_methods(Array<Method*>* old_methods, int emcp_method_count);
 #endif
+  // log class name to classlist
+  void log_to_classlist(const ClassFileStream* cfs) const;
 public:
   // CDS support - remove and restore oops from metadata. Oops are not shared.
   virtual void remove_unshareable_info();
@@ -1363,7 +1365,7 @@ public:
 
   // Logging
   void print_class_load_logging(ClassLoaderData* loader_data,
-                                const char* module_name,
+                                const ModuleEntry* module_entry,
                                 const ClassFileStream* cfs) const;
 };