1 //===-- wrappers_c.h --------------------------------------------*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #ifndef SCUDO_WRAPPERS_C_H_
10 #define SCUDO_WRAPPERS_C_H_
11 
12 #include "platform.h"
13 #include "stats.h"
14 
15 // Bionic's struct mallinfo consists of size_t (mallinfo(3) uses int).
16 #if SCUDO_ANDROID
17 typedef size_t __scudo_mallinfo_data_t;
18 #else
19 typedef int __scudo_mallinfo_data_t;
20 #endif
21 
22 struct __scudo_mallinfo {
23   __scudo_mallinfo_data_t arena;
24   __scudo_mallinfo_data_t ordblks;
25   __scudo_mallinfo_data_t smblks;
26   __scudo_mallinfo_data_t hblks;
27   __scudo_mallinfo_data_t hblkhd;
28   __scudo_mallinfo_data_t usmblks;
29   __scudo_mallinfo_data_t fsmblks;
30   __scudo_mallinfo_data_t uordblks;
31   __scudo_mallinfo_data_t fordblks;
32   __scudo_mallinfo_data_t keepcost;
33 };
34 
35 struct __scudo_mallinfo2 {
36   size_t arena;
37   size_t ordblks;
38   size_t smblks;
39   size_t hblks;
40   size_t hblkhd;
41   size_t usmblks;
42   size_t fsmblks;
43   size_t uordblks;
44   size_t fordblks;
45   size_t keepcost;
46 };
47 
48 // Android sometimes includes malloc.h no matter what, which yields to
49 // conflicting return types for mallinfo() if we use our own structure. So if
50 // struct mallinfo is declared (#define courtesy of malloc.h), use it directly.
51 #if STRUCT_MALLINFO_DECLARED
52 #define SCUDO_MALLINFO mallinfo
53 #else
54 #define SCUDO_MALLINFO __scudo_mallinfo
55 #endif
56 
57 #if !SCUDO_ANDROID || !_BIONIC
58 extern "C" void malloc_postinit();
59 extern HIDDEN scudo::Allocator<scudo::Config, malloc_postinit> Allocator;
60 #endif
61 
62 #endif // SCUDO_WRAPPERS_C_H_
63