Up Top

Serviceability 機能 ： HotSpot Monitoring and Management Interface (JMM) ： 各種 Platform MXBean クラスの処理 ： java.lang.management.ClassLoadingMXBean

概要(Summary)

クラスのロード／アンロード処理が行われるたびに ClassLoadingService オブジェクト内の PerfData に統計情報が蓄えられていく.

sun.management.ClassLoadingImpl クラスのメソッドは, 単にその統計情報を取得するだけ.

処理の流れ (概要)(Execution Flows : Summary)

統計情報の更新処理

ClassFileParser::parseClassFile()
-> ClassLoadingService::notify_class_loaded()

ClassFileParser::parse_method()
-> ClassLoadingService::add_class_method_size()

SystemDictionary::load_shared_class()
-> ClassLoadingService::notify_class_loaded()

Dictionary::do_unloading()
-> ClassLoadingService::notify_class_unloaded()

sun.management.ClassLoadingImpl クラスのメソッドの処理 (統計情報の取得処理)

sun.management.ClassLoadingImpl.isVerbose()
-> sun.management.VMManagementImpl.getVerboseClass()
   -> Java_sun_management_VMManagementImpl_getVerboseClass()
      -> jmm_GetBoolAttribute()  (JMM_VERBOSE_CLASS を引数として呼び出される)
         -> ClassLoadingService::get_verbose()

sun.management.ClassLoadingImpl.setVerboseClass()
-> Java_sun_management_ClassLoadingImpl_setVerboseClass()
   -> jmm_SetBoolAttribute()  (JMM_VERBOSE_CLASS を引数として呼び出される)
      -> ClassLoadingService::set_verbose()

sun.management.ClassLoadingImpl.getTotalLoadedClassCount()
-> sun.management.VMManagementImpl.getTotalClassCount()
   -> Java_sun_management_VMManagementImpl_getTotalClassCount()
      -> jmm_GetLongAttribute()  (JMM_CLASS_LOADED_COUNT を引数として呼び出される)
         -> get_long_attribute()
            -> ClassLoadingService::loaded_class_count()

sun.management.ClassLoadingImpl.getUnloadedClassCount()
-> sun.management.VMManagementImpl.getUnloadedClassCount()
   -> Java_sun_management_VMManagementImpl_getUnloadedClassCount()
      -> jmm_GetLongAttribute()  (JMM_CLASS_UNLOADED_COUNT を引数として呼び出される)
         -> get_long_attribute()
            -> ClassLoadingService::unloaded_class_count()

sun.management.ClassLoadingImpl.getLoadedClassCount()
-> sun.management.VMManagementImpl.getLoadedClassCount()
   -> sun.management.VMManagementImpl.getTotalClassCount()
      -> (同上)
   -> sun.management.VMManagementImpl.getUnloadedClassCount()
      -> (同上)

処理の流れ (詳細)(Execution Flows : Details)

ClassLoadingService::notify_class_loaded()

See: here for details

ClassLoadingService::add_class_method_size()

See: here for details

ClassLoadingService::notify_class_unloaded()

See: here for details

sun.management.ClassLoadingImpl.isVerbose()

See: here for details

Java_sun_management_VMManagementImpl_getVerboseClass()

See: here for details

jmm_GetBoolAttribute()

See: here for details

ClassLoadingService::get_verbose()

See: here for details

Java_sun_management_ClassLoadingImpl_setVerboseClass()

See: here for details

ClassLoadingService::set_verbose()

See: here for details

ClassLoadingService::reset_trace_class_unloading()

See: here for details

sun.management.ClassLoadingImpl.getTotalLoadedClassCount()

See: here for details

Java_sun_management_VMManagementImpl_getTotalClassCount()

See: here for details

jmm_GetLongAttribute()

See: here for details

get_long_attribute()

See: here for details

ClassLoadingService::loaded_class_count()

See: here for details

sun.management.ClassLoadingImpl.getUnloadedClassCount()

See: here for details

Java_sun_management_VMManagementImpl_getUnloadedClassCount()

See: here for details

ClassLoadingService::unloaded_class_count()

See: here for details

sun.management.ClassLoadingImpl.getLoadedClassCount()

See: here for details

sun.management.VMManagementImpl.getLoadedClassCount()

See: here for details

This document is available under the GNU GENERAL PUBLIC LICENSE Version 2.