1 /*
 2  * Copyright (c) 2019, 2020, 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 #include "precompiled.hpp"
25 #include "jfr/leakprofiler/sampling/objectSample.hpp"
26 #include "jfr/leakprofiler/sampling/objectSampler.hpp"
27 #include "oops/weakHandle.inline.hpp"
28 #include "runtime/handles.inline.hpp"
29 
30 void ObjectSample::reset() {
31   release();
32   set_stack_trace_id(0);
33   set_stack_trace_hash(0);
34   release_references();
35 }
36 
37 const oop ObjectSample::object() const {
38   return _object.resolve();
39 }
40 
41 bool ObjectSample::is_dead() const {
42   return _object.peek() == NULL;
43 }
44 
45 const oop* ObjectSample::object_addr() const {
46   return _object.ptr_raw();
47 }
48 
49 void ObjectSample::set_object(oop object) {
50   assert(_object.is_empty(), "should be empty");
51   Handle h(Thread::current(), object);
52   _object = WeakHandle(ObjectSampler::oop_storage(), h);
53 }
54 
55 void ObjectSample::release() {
56   _object.release(ObjectSampler::oop_storage());
57   _object = WeakHandle();
58 }