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.
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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23 */
24
25#ifndef SHARE_JFR_WRITERS_JFRWRITERHOST_HPP
26#define SHARE_JFR_WRITERS_JFRWRITERHOST_HPP
27
28#include "jni.h"
29#include "utilities/globalDefinitions.hpp"
30#include "jfr/utilities/jfrTime.hpp"
31
32class ClassLoaderData;
33class Klass;
34class Method;
35class ModuleEntry;
36class PackageEntry;
37class Symbol;
38class Thread;
39
40// BE == Base Encoder
41// IE == Integer Encoder
42template <typename BE, typename IE, typename WriterPolicyImpl >
43class WriterHost : public WriterPolicyImpl {
44 private:
45 const bool _compressed_integers;
46
47 template <typename T>
48 void write_padded(T value);
49 template <typename T>
50 void write_padded(const T* value, size_t len);
51 template <typename T>
52 u1* write_padded(const T* value, size_t len, u1* pos);
53 template <typename T>
54 void write(const T* value, size_t len);
55 template <typename T>
56 u1* write(const T* value, size_t len, u1* pos);
57 void write_utf8(const char* value);
58 void write_utf16(const jchar* value, jint len);
59
60 protected:
61 template <typename T>
62 void be_write(T value);
63 template <typename T>
64 void be_write(const T* value, size_t len);
65 template <typename StorageType>
66 WriterHost(StorageType* storage, Thread* thread);
67 template <typename StorageType>
68 WriterHost(StorageType* storage, size_t size);
69 WriterHost(Thread* thread);
70 u1* ensure_size(size_t requested_size);
71
72 public:
73 template <typename T>
74 void write(T value);
75 void write(bool value);
76 void write(float value);
77 void write(double value);
78 void write(const char* value);
79 void write(char* value);
80 void write(jstring value);
81 void write(const ClassLoaderData* cld);
82 void write(const Klass* klass);
83 void write(const Method* method);
84 void write(const ModuleEntry* module);
85 void write(const PackageEntry* package);
86 void write(const Symbol* symbol);
87 void write(const Ticks& time);
88 void write(const Tickspan& time);
89 void write(const JfrTicks& time);
90 void write(const JfrTickspan& time);
91 void bytes(const void* buf, size_t len);
92 void write_utf8_u2_len(const char* value);
93 template <typename T>
94 void write_padded_at_offset(T value, int64_t offset);
95 template <typename T>
96 void write_at_offset(T value, int64_t offset);
97 template <typename T>
98 void write_be_at_offset(T value, int64_t offset);
99 int64_t reserve(size_t size);
100};
101
102#endif // SHARE_JFR_WRITERS_JFRWRITERHOST_HPP
103