1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
|
/*
* Copyright (C) 2020 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <err.h>
#include <inttypes.h>
#include <malloc.h>
#include <stdint.h>
#include <string>
#include <vector>
#include <benchmark/benchmark.h>
#include <unwindstack/Elf.h>
#include <unwindstack/Memory.h>
#include "Utils.h"
class SymbolLookupBenchmark : public benchmark::Fixture {
public:
void RunBenchmark(benchmark::State& state, const std::vector<uint64_t>& offsets,
const std::string& elf_file, bool expect_found, uint32_t runs = 1) {
MemoryTracker mem_tracker;
for (const auto& _ : state) {
state.PauseTiming();
mem_tracker.StartTrackingAllocations();
state.ResumeTiming();
auto elf_memory = unwindstack::Memory::CreateFileMemory(elf_file, 0);
unwindstack::Elf elf(elf_memory);
if (!elf.Init() || !elf.valid()) {
errx(1, "Internal Error: Cannot open elf: %s", elf_file.c_str());
}
unwindstack::SharedString name;
uint64_t offset;
for (size_t i = 0; i < runs; i++) {
for (auto pc : offsets) {
bool found = elf.GetFunctionName(pc, &name, &offset);
if (expect_found && !found) {
errx(1, "expected pc 0x%" PRIx64 " present, but not found.", pc);
} else if (!expect_found && found) {
errx(1, "expected pc 0x%" PRIx64 " not present, but found.", pc);
}
}
}
state.PauseTiming();
mem_tracker.StopTrackingAllocations();
state.ResumeTiming();
}
mem_tracker.SetBenchmarkCounters(state);
}
void RunBenchmark(benchmark::State& state, uint64_t pc, const std::string& elf_file,
bool expect_found, uint32_t runs = 1) {
RunBenchmark(state, std::vector<uint64_t>{pc}, elf_file, expect_found, runs);
}
};
BENCHMARK_F(SymbolLookupBenchmark, BM_symbol_lookup_not_present)(benchmark::State& state) {
RunBenchmark(state, 0, GetElfFile(), false);
}
BENCHMARK_F(SymbolLookupBenchmark, BM_symbol_lookup_find_single)(benchmark::State& state) {
RunBenchmark(state, 0x22b2bc, GetElfFile(), true);
}
BENCHMARK_F(SymbolLookupBenchmark, BM_symbol_lookup_find_single_many_times)
(benchmark::State& state) {
RunBenchmark(state, 0x22b2bc, GetElfFile(), true, 4096);
}
BENCHMARK_F(SymbolLookupBenchmark, BM_symbol_lookup_find_multiple)(benchmark::State& state) {
RunBenchmark(state, std::vector<uint64_t>{0x22b2bc, 0xd5d30, 0x1312e8, 0x13582e, 0x1389c8},
GetElfFile(), true);
}
BENCHMARK_F(SymbolLookupBenchmark, BM_symbol_lookup_not_present_from_sorted)
(benchmark::State& state) {
RunBenchmark(state, 0, GetSymbolSortedElfFile(), false);
}
BENCHMARK_F(SymbolLookupBenchmark, BM_symbol_lookup_find_single_from_sorted)
(benchmark::State& state) {
RunBenchmark(state, 0x138638, GetSymbolSortedElfFile(), true);
}
BENCHMARK_F(SymbolLookupBenchmark, BM_symbol_lookup_find_single_many_times_from_sorted)
(benchmark::State& state) {
RunBenchmark(state, 0x138638, GetSymbolSortedElfFile(), true, 4096);
}
BENCHMARK_F(SymbolLookupBenchmark, BM_symbol_lookup_find_multiple_from_sorted)
(benchmark::State& state) {
RunBenchmark(state, std::vector<uint64_t>{0x138638, 0x84350, 0x14df18, 0x1f3a38, 0x1f3ca8},
GetSymbolSortedElfFile(), true);
}
BENCHMARK_F(SymbolLookupBenchmark, BM_symbol_lookup_not_present_from_large_compressed_frame)
(benchmark::State& state) {
RunBenchmark(state, 0, GetLargeCompressedFrameElfFile(), false);
}
BENCHMARK_F(SymbolLookupBenchmark, BM_symbol_lookup_find_single_from_large_compressed_frame)
(benchmark::State& state) {
RunBenchmark(state, 0x202aec, GetLargeCompressedFrameElfFile(), true);
}
BENCHMARK_F(SymbolLookupBenchmark,
BM_symbol_lookup_find_single_many_times_from_large_compressed_frame)
(benchmark::State& state) {
RunBenchmark(state, 0x202aec, GetLargeCompressedFrameElfFile(), true, 4096);
}
BENCHMARK_F(SymbolLookupBenchmark, BM_symbol_lookup_find_multiple_from_large_compressed_frame)
(benchmark::State& state) {
RunBenchmark(state, std::vector<uint64_t>{0x202aec, 0x23e74c, 0xd000c, 0x201b10, 0x183060},
GetLargeCompressedFrameElfFile(), true);
}
|
