1 //===-- malloc_benchmark.cpp ------------------------------------*- 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 #include "allocator_config.h"
10 #include "combined.h"
11 #include "common.h"
12
13 #include "benchmark/benchmark.h"
14
15 #include <memory>
16 #include <vector>
17
18 void *CurrentAllocator;
PostInitCallback()19 template <typename Config> void PostInitCallback() {
20 reinterpret_cast<scudo::Allocator<Config> *>(CurrentAllocator)->initGwpAsan();
21 }
22
BM_malloc_free(benchmark::State & State)23 template <typename Config> static void BM_malloc_free(benchmark::State &State) {
24 using AllocatorT = scudo::Allocator<Config, PostInitCallback<Config>>;
25 auto Deleter = [](AllocatorT *A) {
26 A->unmapTestOnly();
27 delete A;
28 };
29 std::unique_ptr<AllocatorT, decltype(Deleter)> Allocator(new AllocatorT,
30 Deleter);
31 CurrentAllocator = Allocator.get();
32
33 const size_t NBytes = State.range(0);
34 size_t PageSize = scudo::getPageSizeCached();
35
36 for (auto _ : State) {
37 void *Ptr = Allocator->allocate(NBytes, scudo::Chunk::Origin::Malloc);
38 auto *Data = reinterpret_cast<uint8_t *>(Ptr);
39 for (size_t I = 0; I < NBytes; I += PageSize)
40 Data[I] = 1;
41 benchmark::DoNotOptimize(Ptr);
42 Allocator->deallocate(Ptr, scudo::Chunk::Origin::Malloc);
43 }
44
45 State.SetBytesProcessed(uint64_t(State.iterations()) * uint64_t(NBytes));
46 }
47
48 static const size_t MinSize = 8;
49 static const size_t MaxSize = 128 * 1024;
50
51 // FIXME: Add DefaultConfig here once we can tear down the exclusive TSD
52 // cleanly.
53 BENCHMARK_TEMPLATE(BM_malloc_free, scudo::AndroidConfig)
54 ->Range(MinSize, MaxSize);
55 #if SCUDO_CAN_USE_PRIMARY64
56 BENCHMARK_TEMPLATE(BM_malloc_free, scudo::FuchsiaConfig)
57 ->Range(MinSize, MaxSize);
58 #endif
59
60 template <typename Config>
BM_malloc_free_loop(benchmark::State & State)61 static void BM_malloc_free_loop(benchmark::State &State) {
62 using AllocatorT = scudo::Allocator<Config, PostInitCallback<Config>>;
63 auto Deleter = [](AllocatorT *A) {
64 A->unmapTestOnly();
65 delete A;
66 };
67 std::unique_ptr<AllocatorT, decltype(Deleter)> Allocator(new AllocatorT,
68 Deleter);
69 CurrentAllocator = Allocator.get();
70
71 const size_t NumIters = State.range(0);
72 size_t PageSize = scudo::getPageSizeCached();
73 std::vector<void *> Ptrs(NumIters);
74
75 for (auto _ : State) {
76 size_t SizeLog2 = 0;
77 for (void *&Ptr : Ptrs) {
78 Ptr = Allocator->allocate(1 << SizeLog2, scudo::Chunk::Origin::Malloc);
79 auto *Data = reinterpret_cast<uint8_t *>(Ptr);
80 for (size_t I = 0; I < 1 << SizeLog2; I += PageSize)
81 Data[I] = 1;
82 benchmark::DoNotOptimize(Ptr);
83 SizeLog2 = (SizeLog2 + 1) % 16;
84 }
85 for (void *&Ptr : Ptrs)
86 Allocator->deallocate(Ptr, scudo::Chunk::Origin::Malloc);
87 }
88
89 State.SetBytesProcessed(uint64_t(State.iterations()) * uint64_t(NumIters) *
90 8192);
91 }
92
93 static const size_t MinIters = 8;
94 static const size_t MaxIters = 32 * 1024;
95
96 // FIXME: Add DefaultConfig here once we can tear down the exclusive TSD
97 // cleanly.
98 BENCHMARK_TEMPLATE(BM_malloc_free_loop, scudo::AndroidConfig)
99 ->Range(MinIters, MaxIters);
100 #if SCUDO_CAN_USE_PRIMARY64
101 BENCHMARK_TEMPLATE(BM_malloc_free_loop, scudo::FuchsiaConfig)
102 ->Range(MinIters, MaxIters);
103 #endif
104
105 BENCHMARK_MAIN();
106