1 //===-- allocator_config.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_ALLOCATOR_CONFIG_H_
10 #define SCUDO_ALLOCATOR_CONFIG_H_
11 
12 #include "combined.h"
13 #include "common.h"
14 #include "flags.h"
15 #include "primary32.h"
16 #include "primary64.h"
17 #include "secondary.h"
18 #include "size_class_map.h"
19 #include "tsd_exclusive.h"
20 #include "tsd_shared.h"
21 
22 namespace scudo {
23 
24 // Default configurations for various platforms.
25 
26 struct DefaultConfig {
27   using SizeClassMap = DefaultSizeClassMap;
28 #if SCUDO_CAN_USE_PRIMARY64
29   // 1GB Regions
30   typedef SizeClassAllocator64<SizeClassMap, 30U> Primary;
31 #else
32   // 512KB regions
33   typedef SizeClassAllocator32<SizeClassMap, 19U> Primary;
34 #endif
35   typedef MapAllocator<> Secondary;
36   template <class A> using TSDRegistryT = TSDRegistryExT<A>; // Exclusive
37 };
38 
39 struct AndroidConfig {
40   using SizeClassMap = AndroidSizeClassMap;
41 #if SCUDO_CAN_USE_PRIMARY64
42   // 1GB regions
43   typedef SizeClassAllocator64<SizeClassMap, 30U> Primary;
44 #else
45   // 512KB regions
46   typedef SizeClassAllocator32<SizeClassMap, 19U> Primary;
47 #endif
48   typedef MapAllocator<> Secondary;
49   template <class A>
50   using TSDRegistryT = TSDRegistrySharedT<A, 2U>; // Shared, max 2 TSDs.
51 };
52 
53 struct AndroidSvelteConfig {
54   using SizeClassMap = SvelteSizeClassMap;
55 #if SCUDO_CAN_USE_PRIMARY64
56   // 512MB regions
57   typedef SizeClassAllocator64<SizeClassMap, 29U> Primary;
58 #else
59   // 64KB regions
60   typedef SizeClassAllocator32<SizeClassMap, 16U> Primary;
61 #endif
62   typedef MapAllocator<0U> Secondary;
63   template <class A>
64   using TSDRegistryT = TSDRegistrySharedT<A, 1U>; // Shared, only 1 TSD.
65 };
66 
67 #if SCUDO_CAN_USE_PRIMARY64
68 struct FuchsiaConfig {
69   // 1GB Regions
70   typedef SizeClassAllocator64<DefaultSizeClassMap, 30U> Primary;
71   typedef MapAllocator<0U> Secondary;
72   template <class A>
73   using TSDRegistryT = TSDRegistrySharedT<A, 8U>; // Shared, max 8 TSDs.
74 };
75 #endif
76 
77 #if SCUDO_ANDROID
78 typedef AndroidConfig Config;
79 #elif SCUDO_FUCHSIA
80 typedef FuchsiaConfig Config;
81 #else
82 typedef DefaultConfig Config;
83 #endif
84 
85 } // namespace scudo
86 
87 #endif // SCUDO_ALLOCATOR_CONFIG_H_
88