1/*
2 * Copyright (c) 2016, 2019, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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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.
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23 */
24
25#ifndef SHARE_JFR_RECORDER_STORAGE_JFRSTORAGEUTILS_INLINE_HPP
26#define SHARE_JFR_RECORDER_STORAGE_JFRSTORAGEUTILS_INLINE_HPP
27
28#include "jfr/recorder/storage/jfrStorageUtils.hpp"
29#include "runtime/thread.inline.hpp"
30
31template <typename T>
32inline bool UnBufferedWriteToChunk<T>::write(T* t, const u1* data, size_t size) {
33 _writer.write_unbuffered(data, size);
34 _processed += size;
35 return true;
36}
37
38template <typename T>
39inline bool DefaultDiscarder<T>::discard(T* t, const u1* data, size_t size) {
40 _processed += size;
41 return true;
42}
43
44template <typename Operation>
45inline bool ConcurrentWriteOp<Operation>::process(typename Operation::Type* t) {
46 const u1* const current_top = t->concurrent_top();
47 const size_t unflushed_size = t->pos() - current_top;
48 if (unflushed_size == 0) {
49 t->set_concurrent_top(current_top);
50 return true;
51 }
52 const bool result = _operation.write(t, current_top, unflushed_size);
53 t->set_concurrent_top(current_top + unflushed_size);
54 return result;
55}
56
57template <typename Operation>
58inline bool ConcurrentWriteOpExcludeRetired<Operation>::process(typename Operation::Type* t) {
59 if (t->retired()) {
60 assert(t->empty(), "invariant");
61 return true;
62 }
63 return ConcurrentWriteOp<Operation>::process(t);
64}
65
66template <typename Operation>
67inline bool MutexedWriteOp<Operation>::process(typename Operation::Type* t) {
68 assert(t != NULL, "invariant");
69 const u1* const current_top = t->top();
70 const size_t unflushed_size = t->pos() - current_top;
71 if (unflushed_size == 0) {
72 return true;
73 }
74 const bool result = _operation.write(t, current_top, unflushed_size);
75 t->set_top(current_top + unflushed_size);
76 return result;
77}
78
79template <typename Type>
80static void retired_sensitive_acquire(Type* t) {
81 assert(t != NULL, "invariant");
82 if (t->retired()) {
83 return;
84 }
85 Thread* const thread = Thread::current();
86 while (!t->try_acquire(thread)) {
87 if (t->retired()) {
88 return;
89 }
90 }
91}
92
93template <typename Operation>
94inline bool ExclusiveOp<Operation>::process(typename Operation::Type* t) {
95 retired_sensitive_acquire(t);
96 assert(t->acquired_by_self() || t->retired(), "invariant");
97 // User is required to ensure proper release of the acquisition
98 return MutexedWriteOp<Operation>::process(t);
99}
100
101template <typename Operation>
102inline bool DiscardOp<Operation>::process(typename Operation::Type* t) {
103 assert(t != NULL, "invariant");
104 const u1* const current_top = _mode == concurrent ? t->concurrent_top() : t->top();
105 const size_t unflushed_size = t->pos() - current_top;
106 if (unflushed_size == 0) {
107 if (_mode == concurrent) {
108 t->set_concurrent_top(current_top);
109 }
110 return true;
111 }
112 const bool result = _operation.discard(t, current_top, unflushed_size);
113 if (_mode == concurrent) {
114 t->set_concurrent_top(current_top + unflushed_size);
115 } else {
116 t->set_top(current_top + unflushed_size);
117 }
118 return result;
119}
120
121#endif // SHARE_JFR_RECORDER_STORAGE_JFRSTORAGEUTILS_INLINE_HPP
122