1 /*
2 * Copyright (C) 2017 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #pragma once
18
19 #include <stdint.h>
20
21 #include <map>
22 #include <mutex>
23 #include <string>
24 #include <utility>
25 #include <vector>
26
27 typedef void (*benchmark_func_t) (void);
28
29 extern std::mutex g_map_lock;
30
31 extern std::map<std::string, std::pair<benchmark_func_t, std::string>> g_str_to_func;
32
33 static int __attribute__((unused)) EmplaceBenchmark(const std::string& fn_name, benchmark_func_t fn_ptr, const std::string& arg = "") {
34 g_map_lock.lock();
35 g_str_to_func.emplace(std::string(fn_name), std::make_pair(fn_ptr, arg));
36 g_map_lock.unlock();
37 return 0;
38 }
39
40 #define BIONIC_BENCHMARK(n) \
41 int _bionic_benchmark_##n __attribute__((unused)) = EmplaceBenchmark(std::string(#n), reinterpret_cast<benchmark_func_t>(n))
42
43 #define BIONIC_BENCHMARK_WITH_ARG(n, arg) \
44 int _bionic_benchmark_##n __attribute__((unused)) = EmplaceBenchmark(std::string(#n), reinterpret_cast<benchmark_func_t>(n), arg)
45
46 #define BIONIC_TRIVIAL_BENCHMARK(__name, __expression) \
47 static void __name(benchmark::State& state) { \
48 for (auto _ : state) { \
49 benchmark::DoNotOptimize(__expression); \
50 } \
51 } \
52 BIONIC_BENCHMARK(__name)
53
54 constexpr auto KB = 1024;
55
56 typedef struct {
57 int cpu_to_lock = -1;
58 long num_iterations = 0;
59 std::string xmlpath;
60 std::vector<std::string> extra_benchmarks;
61 } bench_opts_t;
62
63 // This function returns a pointer less than 2 * alignment + or_mask bytes into the array.
64 char* GetAlignedMemory(char* orig_ptr, size_t alignment, size_t or_mask);
65
66 char* GetAlignedPtr(std::vector<char>* buf, size_t alignment, size_t nbytes);
67
68 wchar_t* GetAlignedPtr(std::vector<wchar_t>* buf, size_t alignment, size_t nbytes);
69
70 char* GetAlignedPtrFilled(std::vector<char>* buf, size_t alignment, size_t nbytes, char fill_byte);
71
72 bool LockToCPU(int cpu_to_lock);
73
MakeAllocationResident(void * ptr,size_t nbytes,int pagesize)74 static __inline __attribute__ ((__always_inline__)) void MakeAllocationResident(
75 void* ptr, size_t nbytes, int pagesize) {
76 uint8_t* data = reinterpret_cast<uint8_t*>(ptr);
77 for (size_t i = 0; i < nbytes; i += pagesize) {
78 data[i] = 1;
79 }
80 }
81