streams_findbyte.cpp

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// Copyright (c) 2023 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
#include <bench/bench.h>
 
#include <streams.h>
#include <util/fs.h>
 
#include <cstddef>
#include <cstdint>
#include <cstdio>
 
static void FindByte(benchmark::Bench& bench)
{
    // Setup
    CAutoFile file{fsbridge::fopen("streams_tmp", "w+b"), 0};
    const size_t file_size = 200;
    uint8_t data[file_size] = {0};
    data[file_size-1] = 1;
    file << data;
    std::rewind(file.Get());
    BufferedFile bf{file, /*nBufSize=*/file_size + 1, /*nRewindIn=*/file_size};
 
    bench.run([&] {
        bf.SetPos(0);
        bf.FindByte(std::byte(1));
    });
 
    // Cleanup
    file.fclose();
    fs::remove("streams_tmp");
}
 
BENCHMARK(FindByte, benchmark::PriorityLevel::HIGH);