contrib/llvm-project/compiler-rt/lib/scudo/standalone/allocator_config.h

   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 "size_class_map.h"
  18 #include "tsd_exclusive.h"
  19 #include "tsd_shared.h"
  20
  21 namespace scudo {
  22
  23 // Default configurations for various platforms.
  24
  25 struct DefaultConfig {
  26   using SizeClassMap = DefaultSizeClassMap;
  27 #if SCUDO_CAN_USE_PRIMARY64
  28   // 1GB Regions
  29   typedef SizeClassAllocator64<SizeClassMap, 30U> Primary;
  30 #else
  31   // 512KB regions
  32   typedef SizeClassAllocator32<SizeClassMap, 19U> Primary;
  33 #endif
  34   template <class A> using TSDRegistryT = TSDRegistryExT<A>; // Exclusive
  35 };
  36
  37 struct AndroidConfig {
  38   using SizeClassMap = AndroidSizeClassMap;
  39 #if SCUDO_CAN_USE_PRIMARY64
  40   // 1GB regions
  41   typedef SizeClassAllocator64<SizeClassMap, 30U> Primary;
  42 #else
  43   // 512KB regions
  44   typedef SizeClassAllocator32<SizeClassMap, 19U> Primary;
  45 #endif
  46   template <class A>
  47   using TSDRegistryT = TSDRegistrySharedT<A, 2U>; // Shared, max 2 TSDs.
  48 };
  49
  50 struct AndroidSvelteConfig {
  51   using SizeClassMap = SvelteSizeClassMap;
  52 #if SCUDO_CAN_USE_PRIMARY64
  53   // 512MB regions
  54   typedef SizeClassAllocator64<SizeClassMap, 29U> Primary;
  55 #else
  56   // 256KB regions
  57   typedef SizeClassAllocator32<SizeClassMap, 18U> Primary;
  58 #endif
  59   template <class A>
  60   using TSDRegistryT = TSDRegistrySharedT<A, 1U>; // Shared, only 1 TSD.
  61 };
  62
  63 struct FuchsiaConfig {
  64   // 1GB Regions
  65   typedef SizeClassAllocator64<DefaultSizeClassMap, 30U> Primary;
  66   template <class A>
  67   using TSDRegistryT = TSDRegistrySharedT<A, 8U>; // Shared, max 8 TSDs.
  68 };
  69
  70 #if SCUDO_ANDROID
  71 typedef AndroidConfig Config;
  72 #elif SCUDO_FUCHSIA
  73 typedef FuchsiaConfig Config;
  74 #else
  75 typedef DefaultConfig Config;
  76 #endif
  77
  78 } // namespace scudo
  79
  80 #endif // SCUDO_ALLOCATOR_CONFIG_H_