// Generate a COMPILED_METHOD_LOAD event for each nnmethod

jvmtiError JvmtiCodeBlobEvents::generate_compiled_method_load_events(JvmtiEnv* env) {

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

      HandleMark hm;

  {- -------------------------------------------
  (1) 全ての nmethod オブジェクトに対して 
      nmethod::get_and_cache_jmethod_id() 及び
      JvmtiExport::post_compiled_method_load() を呼び出し, 
      COMPILED_METHOD_LOAD イベントの生成を行う.

      (なお, 既に死んでいる nmethod (= is_alive() が false のもの) については生成しない)

      (なお, この処理は CodeCache_lock で排他した状態で行う.
       ただし, nmethod::get_and_cache_jmethod_id() と JvmtiExport::post_compiled_method_load() を
       呼び出す瞬間だけはロックを開放して処理する)
      ---------------------------------------- -}

      // Walk the CodeCache notifying for live nmethods.  The code cache
      // may be changing while this is happening which is ok since newly
      // created nmethod will notify normally and nmethods which are freed
      // can be safely skipped.
      MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
      nmethod* current = CodeCache::first_nmethod();
      while (current != NULL) {
        // Only notify for live nmethods
        if (current->is_alive()) {
          // Lock the nmethod so it can't be freed
          nmethodLocker nml(current);

          // Don't hold the lock over the notify or jmethodID creation
          MutexUnlockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
          current->get_and_cache_jmethod_id();
          JvmtiExport::post_compiled_method_load(current);
        }
        current = CodeCache::next_nmethod(current);
      }

  {- -------------------------------------------
  (1) リターン
      ---------------------------------------- -}

      return JVMTI_ERROR_NONE;
    }