1// Protocol Buffers - Google's data interchange format
2// Copyright 2008 Google Inc. All rights reserved.
3// https://developers.google.com/protocol-buffers/
4//
5// Redistribution and use in source and binary forms, with or without
6// modification, are permitted provided that the following conditions are
7// met:
8//
9// * Redistributions of source code must retain the above copyright
10// notice, this list of conditions and the following disclaimer.
11// * Redistributions in binary form must reproduce the above
12// copyright notice, this list of conditions and the following disclaimer
13// in the documentation and/or other materials provided with the
14// distribution.
15// * Neither the name of Google Inc. nor the names of its
16// contributors may be used to endorse or promote products derived from
17// this software without specific prior written permission.
18//
19// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30
31// A common header that is included across all protobuf headers. We do our best
32// to avoid #defining any macros here; instead we generally put macros in
33// port_def.inc and port_undef.inc so they are not visible from outside of
34// protobuf.
35
36#ifndef GOOGLE_PROTOBUF_PORT_H__
37#define GOOGLE_PROTOBUF_PORT_H__
38
39#include <cstddef>
40#include <new>
41
42
43namespace google {
44namespace protobuf {
45namespace internal {
46inline void SizedDelete(void* p, size_t size) {
47#if defined(__cpp_sized_deallocation)
48 ::operator delete(p, size);
49#else
50 ::operator delete(p);
51#endif
52}
53inline void SizedArrayDelete(void* p, size_t size) {
54#if defined(__cpp_sized_deallocation)
55 ::operator delete[](p, size);
56#else
57 ::operator delete[](p);
58#endif
59}
60
61// Tag type used to invoke the constinit constructor overload of classes
62// such as ArenaStringPtr and MapFieldBase. Such constructors are internal
63// implementation details of the library.
64struct ConstantInitialized {
65 explicit ConstantInitialized() = default;
66};
67
68// Tag type used to invoke the arena constructor overload of classes such
69// as ExtensionSet and MapFieldLite in aggregate initialization. These
70// classes typically don't have move/copy constructors, which rules out
71// explicit initialization in pre-C++17.
72struct ArenaInitialized {
73 explicit ArenaInitialized() = default;
74};
75
76} // namespace internal
77} // namespace protobuf
78} // namespace google
79
80#endif // GOOGLE_PROTOBUF_PORT_H__
81