1 /*
 2  * Copyright (c) 2024, Oracle and/or its affiliates. All rights reserved.
 3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 4  *
 5  * This code is free software; you can redistribute it and/or modify it
 6  * under the terms of the GNU General Public License version 2 only, as
 7  * published by the Free Software Foundation.
 8  *
 9  * This code is distributed in the hope that it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12  * version 2 for more details (a copy is included in the LICENSE file that
13  * accompanied this code).
14  *
15  * You should have received a copy of the GNU General Public License version
16  * 2 along with this work; if not, write to the Free Software Foundation,
17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18  *
19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20  * or visit www.oracle.com if you need additional information or have any
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24 
25 #ifndef SHARE_CDS_CLASSPREINITIALIZER_HPP
26 #define SHARE_CDS_CLASSPREINITIALIZER_HPP
27 
28 #include "memory/allStatic.hpp"
29 #include "utilities/exceptions.hpp"
30 
31 class InstanceKlass;
32 
33 class ClassPreinitializer : AllStatic {
34   static bool has_non_default_static_fields(InstanceKlass* ik);
35   static bool is_forced_preinit_class(InstanceKlass* ik);
36 
37   static bool check_can_be_preinited(InstanceKlass* ik);
38   static bool can_be_preinited(InstanceKlass* ik);
39   static bool can_be_preinited_locked(InstanceKlass* ik);
40 
41 public:
42   // Called by metaspaceShared.cpp to speculatively initialize a class (if the results
43   // of initialization can be safely archived.
44   static void maybe_preinit_class(InstanceKlass* ik, TRAPS);
45 
46   static void reset_preinit_check();
47 
48   // Called by heapShared.cpp to see if src_ik->java_mirror() can be archived in
49   // the initialized state.
50   static bool can_archive_preinitialized_mirror(InstanceKlass* src_ik);
51 };
52 
53 #endif // SHARE_CDS_CLASSPREINITIALIZER_HPP