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bench_embedded.cpp
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#include <benchmark/benchmark.h>
#include <iostream>
#include <array>
static void CurrentCLike(benchmark::State& state) {
// Code inside this loop is measured repeatedly
for (auto _ : state) {
static constexpr size_t embedded_file_count = 2;
static const char* embedded_file_name_0 = ":/Resources/sandia/Sandia_Modules.json";
static const char* embedded_file_name_1 = ":/Resources/sandia/Sandia_Modules2.json";
static const uint8_t embedded_file_0[] = {0x78, 0x9c, 0xed, 0xbd, 0x5d, 0xaf, 0xe3, 0xd8};
static const uint8_t embedded_file_1[] = {0xed, 0xaf, 0xe3, 0xbd, 0x5d, 0xaf, 0xe3, 0xd8, 0xe3};
static const size_t embedded_file_len_0 = 8;
static const size_t embedded_file_len_1 = 9;
static const char* embedded_file_names[] = {
embedded_file_name_0,
embedded_file_name_1,
};
static const size_t embedded_file_lens[] = {
embedded_file_len_0,
embedded_file_len_1,
};
static const uint8_t* embedded_files[] = {
embedded_file_0,
embedded_file_1,
};
// Make sure the variable is not optimized away by compiler
benchmark::DoNotOptimize(embedded_file_names);
// benchmark::DoNotOptimize(embedded_file_lens);
benchmark::DoNotOptimize(embedded_files);
for (size_t i = 0; i < embedded_file_count; ++i) {
auto embedded_file_name = embedded_file_names[i];
benchmark::DoNotOptimize(embedded_file_name);
for (size_t j = 0; j < embedded_file_lens[i]; ++j) {
auto content = embedded_files[i][j];
benchmark::DoNotOptimize(content);
}
}
}
}
// Register the function as a benchmark
BENCHMARK(CurrentCLike);
static void ConstexprCLike(benchmark::State& state) {
// Code inside this loop is measured repeatedly
for (auto _ : state) {
static constexpr size_t embedded_file_count = 2;
static constexpr auto embedded_file_name_0 = ":/Resources/sandia/Sandia_Modules.json";
static constexpr auto embedded_file_name_1 = ":/Resources/sandia/Sandia_Modules2.json";
static constexpr uint8_t embedded_file_0[] = {0x78, 0x9c, 0xed, 0xbd, 0x5d, 0xaf, 0xe3, 0xd8};
static constexpr uint8_t embedded_file_1[] = {0xed, 0xaf, 0xe3, 0xbd, 0x5d, 0xaf, 0xe3, 0xd8, 0xe3};
static constexpr size_t embedded_file_len_0 = 8;
static constexpr size_t embedded_file_len_1 = 9;
static const char* embedded_file_names[] = {
embedded_file_name_0,
embedded_file_name_1,
};
static constexpr size_t embedded_file_lens[] = {
embedded_file_len_0,
embedded_file_len_1,
};
static const uint8_t* embedded_files[] = {
embedded_file_0,
embedded_file_1,
};
// Make sure the variable is not optimized away by compiler
benchmark::DoNotOptimize(embedded_file_names);
// benchmark::DoNotOptimize(embedded_file_lens);
benchmark::DoNotOptimize(embedded_files);
for (size_t i = 0; i < embedded_file_count; ++i) {
auto embedded_file_name = embedded_file_names[i];
benchmark::DoNotOptimize(embedded_file_name);
for (size_t j = 0; j < embedded_file_lens[i]; ++j) {
auto content = embedded_files[i][j];
benchmark::DoNotOptimize(content);
}
}
}
}
// Register the function as a benchmark
BENCHMARK(ConstexprCLike);
/**
static void NewConstexprArray(benchmark::State& state) {
// Code inside this loop is measured repeatedly
for (auto _ : state) {
static constexpr size_t embedded_file_count = 2;
static constexpr auto embedded_file_name_0 = ":/Resources/sandia/Sandia_Modules.json";
static constexpr auto embedded_file_name_1 = ":/Resources/sandia/Sandia_Modules2.json";
static constexpr std::array<std::string_view, embedded_file_count> embedded_file_names {{embedded_file_name_0, embedded_file_name_1}};
static constexpr size_t embedded_file_len_0 = 8;
static constexpr std::array<uint8_t, embedded_file_len_0> embedded_file_0{0x78,0x9c,0xed,0xbd,0x5d,0xaf,0xe3,0xd8};
static constexpr size_t embedded_file_len_1 = 9;
static constexpr std::array<uint8_t, embedded_file_len_1> embedded_file_1{0xed,0xaf,0xe3, 0xbd,0x5d,0xaf,0xe3,0xd8,0xe3};
static constexpr std::array<int, embedded_file_count> embedded_file_lens {
embedded_file_len_0,
embedded_file_len_1,
};
static constexpr std::array<std::array<uint8_t>, embedded_file_count> embedded_files = {
embedded_file_0,
embedded_file_1,
};
//static constexpr auto embedded_files{{
//embedded_file_0,
//embedded_file_1,
//}};
static const uint8_t *embedded_files[] = {
embedded_file_0,
embedded_file_1,
};
// Make sure the variable is not optimized away by compiler
benchmark::DoNotOptimize(embedded_file_names);
benchmark::DoNotOptimize(embedded_file_lens);
benchmark::DoNotOptimize(embedded_files);
for (size_t i = 0; i < embedded_file_count; ++i) {
std::cout << embedded_file_lens[i] << "," << embedded_file_names[i] << '\n';
auto embedded_file_name = embedded_file_names[i];
benchmark::DoNotOptimize(embedded_file_name);
for (auto j = 0; j < embedded_file_lens[i]; ++j) {
auto content = embedded_files[i][j];
benchmark::DoNotOptimize(content);
}
}
}
}
// Register the function as a benchmark
BENCHMARK(NewConstexprArray);
*/