// common code for JVM_DefineClass() and JVM_DefineClassWithSource()
// and JVM_DefineClassWithSourceCond()

static jclass jvm_define_class_common(JNIEnv *env, const char *name,
                                      jobject loader, const jbyte *buf,
                                      jsize len, jobject pd, const char *source,
                                      jboolean verify, TRAPS) {

  {- -------------------------------------------
  (1) 
      ---------------------------------------- -}

      if (source == NULL)  source = "__JVM_DefineClass__";

  {- -------------------------------------------
  (1) (assert)
      ---------------------------------------- -}

      assert(THREAD->is_Java_thread(), "must be a JavaThread");

  {- -------------------------------------------
  (1) (変数宣言など)
      ---------------------------------------- -}

      JavaThread* jt = (JavaThread*) THREAD;

  {- -------------------------------------------
  (1) (プロファイル情報の記録) (See: PerfClassTraceTime)
      ---------------------------------------- -}

      PerfClassTraceTime vmtimer(ClassLoader::perf_define_appclass_time(),
                                 ClassLoader::perf_define_appclass_selftime(),
                                 ClassLoader::perf_define_appclasses(),
                                 jt->get_thread_stat()->perf_recursion_counts_addr(),
                                 jt->get_thread_stat()->perf_timers_addr(),
                                 PerfClassTraceTime::DEFINE_CLASS);

  {- -------------------------------------------
  (1) (プロファイル情報の記録) ("sun.cls.appClassBytes")
      ---------------------------------------- -}

      if (UsePerfData) {
        ClassLoader::perf_app_classfile_bytes_read()->inc(len);
      }

  {- -------------------------------------------
  (1) (変数宣言など)
      (なお, name 引数の文字列が長すぎる場合は NoClassDefFoundError)
      ---------------------------------------- -}

      // Since exceptions can be thrown, class initialization can take place
      // if name is NULL no check for class name in .class stream has to be made.
      TempNewSymbol class_name = NULL;
      if (name != NULL) {
        const int str_len = (int)strlen(name);
        if (str_len > Symbol::max_length()) {
          // It's impossible to create this class;  the name cannot fit
          // into the constant pool.
          THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name);
        }
        class_name = SymbolTable::new_symbol(name, str_len, CHECK_NULL);
      }

  {- -------------------------------------------
  (1) (変数宣言など)
      ---------------------------------------- -}

      ResourceMark rm(THREAD);
      ClassFileStream st((u1*) buf, len, (char *)source);
      Handle class_loader (THREAD, JNIHandles::resolve(loader));

  {- -------------------------------------------
  (1) (プロファイル情報の記録) ("sun.cls.jvmDefineClassNoLockCalls")
      (See: ClassLoader::sync_JVMDefineClassLockFreeCounter())
      ---------------------------------------- -}

      if (UsePerfData) {
        is_lock_held_by_thread(class_loader,
                               ClassLoader::sync_JVMDefineClassLockFreeCounter(),
                               THREAD);
      }

  {- -------------------------------------------
  (1) (変数宣言など)
      ---------------------------------------- -}

      Handle protection_domain (THREAD, JNIHandles::resolve(pd));

  {- -------------------------------------------
  (1) SystemDictionary::resolve_from_stream() を呼んで, クラスのロード処理を行う.
      ---------------------------------------- -}

      klassOop k = SystemDictionary::resolve_from_stream(class_name, class_loader,
                                                         protection_domain, &st,
                                                         verify != 0,
                                                         CHECK_NULL);

  {- -------------------------------------------
  (1) (トレース出力)
      ---------------------------------------- -}

      if (TraceClassResolution && k != NULL) {
        trace_class_resolution(k);
      }

  {- -------------------------------------------
  (1) 結果をリターン
      ---------------------------------------- -}

      return (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror());
    }