1 | /* |
2 | * Copyright 2014-present Facebook, Inc. |
3 | * |
4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
5 | * you may not use this file except in compliance with the License. |
6 | * You may obtain a copy of the License at |
7 | * |
8 | * http://www.apache.org/licenses/LICENSE-2.0 |
9 | * |
10 | * Unless required by applicable law or agreed to in writing, software |
11 | * distributed under the License is distributed on an "AS IS" BASIS, |
12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
13 | * See the License for the specific language governing permissions and |
14 | * limitations under the License. |
15 | */ |
16 | |
17 | #include <folly/memory/detail/MallocImpl.h> |
18 | |
19 | extern "C" { |
20 | |
21 | #ifdef _MSC_VER |
22 | // MSVC doesn't have weak symbols, so do some linker magic |
23 | // to emulate them. (the magic is in the header) |
24 | const char* mallocxWeak = nullptr; |
25 | const char* rallocxWeak = nullptr; |
26 | const char* xallocxWeak = nullptr; |
27 | const char* sallocxWeak = nullptr; |
28 | const char* dallocxWeak = nullptr; |
29 | const char* sdallocxWeak = nullptr; |
30 | const char* nallocxWeak = nullptr; |
31 | const char* mallctlWeak = nullptr; |
32 | const char* mallctlnametomibWeak = nullptr; |
33 | const char* mallctlbymibWeak = nullptr; |
34 | #elif !FOLLY_HAVE_WEAK_SYMBOLS |
35 | void* (*mallocx)(size_t, int) = nullptr; |
36 | void* (*rallocx)(void*, size_t, int) = nullptr; |
37 | size_t (*xallocx)(void*, size_t, size_t, int) = nullptr; |
38 | size_t (*sallocx)(const void*, int) = nullptr; |
39 | void (*dallocx)(void*, int) = nullptr; |
40 | void (*sdallocx)(void*, size_t, int) = nullptr; |
41 | size_t (*nallocx)(size_t, int) = nullptr; |
42 | int (*mallctl)(const char*, void*, size_t*, void*, size_t) = nullptr; |
43 | int (*mallctlnametomib)(const char*, size_t*, size_t*) = nullptr; |
44 | int (*mallctlbymib)(const size_t*, size_t, void*, size_t*, void*, size_t) = |
45 | nullptr; |
46 | #endif |
47 | } |
48 | |