Bitcoin Core  26.99.0
P2P Digital Currency
streams_findbyte.cpp
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1 // Copyright (c) 2023 The Bitcoin Core developers
2 // Distributed under the MIT software license, see the accompanying
3 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
4 
5 #include <bench/bench.h>
6 
7 #include <streams.h>
8 #include <util/fs.h>
9 
10 #include <cstddef>
11 #include <cstdint>
12 #include <cstdio>
13 
14 static void FindByte(benchmark::Bench& bench)
15 {
16  // Setup
17  AutoFile file{fsbridge::fopen("streams_tmp", "w+b")};
18  const size_t file_size = 200;
19  uint8_t data[file_size] = {0};
20  data[file_size-1] = 1;
21  file << data;
22  std::rewind(file.Get());
23  BufferedFile bf{file, /*nBufSize=*/file_size + 1, /*nRewindIn=*/file_size};
24 
25  bench.run([&] {
26  bf.SetPos(0);
27  bf.FindByte(std::byte(1));
28  });
29 
30  // Cleanup
31  file.fclose();
32  fs::remove("streams_tmp");
33 }
34 
Non-refcounted RAII wrapper for FILE*.
Definition: streams.h:389
Wrapper around an AutoFile& that implements a ring buffer to deserialize from.
Definition: streams.h:467
Main entry point to nanobench's benchmarking facility.
Definition: nanobench.h:627
Bench & run(char const *benchmarkName, Op &&op)
Repeatedly calls op() based on the configuration, and performs measurements.
Definition: nanobench.h:1234
@ HIGH
Definition: bench.h:47
FILE * fopen(const fs::path &p, const char *mode)
Definition: fs.cpp:26
BENCHMARK(FindByte, benchmark::PriorityLevel::HIGH)
static void FindByte(benchmark::Bench &bench)