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
43 namespace google {
44 namespace protobuf {
45 namespace internal {
SizedDelete(void * p,size_t size)46 inline void SizedDelete(void* p, size_t size) {
47 #if defined(__cpp_sized_deallocation)
48 ::operator delete(p, size);
49 #else
50 // Avoid -Wunused-parameter
51 (void)size;
52 ::operator delete(p);
53 #endif
54 }
SizedArrayDelete(void * p,size_t size)55 inline void SizedArrayDelete(void* p, size_t size) {
56 #if defined(__cpp_sized_deallocation)
57 ::operator delete[](p, size);
58 #else
59 // Avoid -Wunused-parameter
60 (void)size;
61 ::operator delete[](p);
62 #endif
63 }
64
65 // Tag type used to invoke the constinit constructor overload of classes
66 // such as ArenaStringPtr and MapFieldBase. Such constructors are internal
67 // implementation details of the library.
68 struct ConstantInitialized {
69 explicit ConstantInitialized() = default;
70 };
71
72 // Tag type used to invoke the arena constructor overload of classes such
73 // as ExtensionSet and MapFieldLite in aggregate initialization. These
74 // classes typically don't have move/copy constructors, which rules out
75 // explicit initialization in pre-C++17.
76 struct ArenaInitialized {
77 explicit ArenaInitialized() = default;
78 };
79
80 } // namespace internal
81 } // namespace protobuf
82 } // namespace google
83
84 #endif // GOOGLE_PROTOBUF_PORT_H__
85