1 /*
 2  * Copyright (c) 1998, 2018, 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
21  * questions.
22  *
23  */
24 
25 #include "precompiled.hpp"
26 #include "oops/compiledICHolder.hpp"
27 #include "runtime/atomic.hpp"
28 
29 volatile int CompiledICHolder::_live_count;
30 volatile int CompiledICHolder::_live_not_claimed_count;
31 
32 
33 CompiledICHolder::CompiledICHolder(Metadata* metadata, Klass* klass, bool is_method)
34   : _holder_metadata(metadata),
35     _holder_klass(klass),
36     _next(NULL),
37     _is_enqueued(false),
38     _is_metadata_method(is_method) {
39 #ifdef ASSERT
40   Atomic::inc(&_live_count);
41   Atomic::inc(&_live_not_claimed_count);
42 #endif // ASSERT
43 }
44 
45 #ifdef ASSERT
46 CompiledICHolder::~CompiledICHolder() {
47   assert(_live_count > 0, "underflow");
48   Atomic::dec(&_live_count);
49 }
50 #endif // ASSERT
51 
52 // Printing
53 
54 void CompiledICHolder::print_on(outputStream* st) const {
55   st->print("%s", internal_name());
56   st->print(" - metadata: "); holder_metadata()->print_value_on(st); st->cr();
57   st->print(" - klass:    "); holder_klass()->print_value_on(st); st->cr();
58 }
59 
60 void CompiledICHolder::print_value_on(outputStream* st) const {
61   st->print("%s", internal_name());
62 }
63 
64 
65 // Verification
66 
67 void CompiledICHolder::verify_on(outputStream* st) {
68   guarantee(holder_metadata()->is_method() || holder_metadata()->is_klass(), "should be method or klass");
69   guarantee(holder_klass()->is_klass(),   "should be klass");
70 }
71 
72 #ifdef ASSERT
73 
74 void CompiledICHolder::claim() {
75   Atomic::dec(&_live_not_claimed_count);
76 }
77 
78 #endif // ASSERT