1 /*
 2  * Copyright (c) 1999, 2023, 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_CI_CIFLAGS_HPP
26 #define SHARE_CI_CIFLAGS_HPP
27 
28 #include "ci/ciClassList.hpp"
29 #include "jvm_constants.h"
30 #include "utilities/accessFlags.hpp"
31 #include "utilities/ostream.hpp"
32 
33 // ciFlags
34 //
35 // This class represents klass or method flags.
36 class ciFlags {
37 private:
38   friend class ciInstanceKlass;
39   friend class ciField;
40   friend class ciMethod;
41 
42   jint _flags;
43   bool _stable;
44   bool _intialized_final_update;
45 
46   ciFlags() :_flags(0), _stable(false), _intialized_final_update(false) { }
47   ciFlags(AccessFlags flags, bool is_stable = false, bool is_initialized_final_update = false) :
48     _flags(flags.as_int()), _stable(is_stable), _intialized_final_update(is_initialized_final_update) { }
49 
50 public:
51   // Java access flags
52   bool is_public               () const { return (_flags & JVM_ACC_PUBLIC                    ) != 0; }
53   bool is_private              () const { return (_flags & JVM_ACC_PRIVATE                   ) != 0; }
54   bool is_protected            () const { return (_flags & JVM_ACC_PROTECTED                 ) != 0; }
55   bool is_static               () const { return (_flags & JVM_ACC_STATIC                    ) != 0; }
56   bool is_final                () const { return (_flags & JVM_ACC_FINAL                     ) != 0; }
57   bool is_synchronized         () const { return (_flags & JVM_ACC_SYNCHRONIZED              ) != 0; }
58   bool is_volatile             () const { return (_flags & JVM_ACC_VOLATILE                  ) != 0; }
59   bool is_transient            () const { return (_flags & JVM_ACC_TRANSIENT                 ) != 0; }
60   bool is_native               () const { return (_flags & JVM_ACC_NATIVE                    ) != 0; }
61   bool is_interface            () const { return (_flags & JVM_ACC_INTERFACE                 ) != 0; }
62   bool is_abstract             () const { return (_flags & JVM_ACC_ABSTRACT                  ) != 0; }
63   bool has_vararg              () const { return (_flags & JVM_ACC_VARARGS                   ) != 0; }
64   bool is_identity             () const { return (_flags & JVM_ACC_IDENTITY                  ) != 0; }
65   bool is_stable               () const { return _stable; }
66   // In case the current object represents a field, return true if
67   // the field is modified outside of instance initializer methods
68   // (or class/initializer methods if the field is static) and false
69   // otherwise.
70   bool has_initialized_final_update() const { return _intialized_final_update; };
71 
72   // Conversion
73   jint   as_int()                      { return _flags; }
74 
75   void print_klass_flags(outputStream* st = tty);
76   void print_member_flags(outputStream* st = tty);
77   void print(outputStream* st = tty);
78 };
79 
80 #endif // SHARE_CI_CIFLAGS_HPP