Bitcoin Core  0.20.99
P2P Digital Currency
hashpadding.cpp
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1 // Copyright (c) 2015-2018 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 #include <hash.h>
7 #include <random.h>
8 #include <uint256.h>
9 
10 
11 static void PrePadded(benchmark::Bench& bench)
12 {
13 
14  CSHA256 hasher;
15 
16  // Setup the salted hasher
17  uint256 nonce = GetRandHash();
18  hasher.Write(nonce.begin(), 32);
19  hasher.Write(nonce.begin(), 32);
20  uint256 data = GetRandHash();
21  bench.run([&] {
22  unsigned char out[32];
23  CSHA256 h = hasher;
24  h.Write(data.begin(), 32);
25  h.Finalize(out);
26  });
27 }
28 
30 
31 static void RegularPadded(benchmark::Bench& bench)
32 {
33  CSHA256 hasher;
34 
35  // Setup the salted hasher
36  uint256 nonce = GetRandHash();
37  uint256 data = GetRandHash();
38  bench.run([&] {
39  unsigned char out[32];
40  CSHA256 h = hasher;
41  h.Write(nonce.begin(), 32);
42  h.Write(data.begin(), 32);
43  h.Finalize(out);
44  });
45 }
46 
CSHA256 & Write(const unsigned char *data, size_t len)
Definition: sha256.cpp:637
static void RegularPadded(benchmark::Bench &bench)
Definition: hashpadding.cpp:31
uint256 GetRandHash() noexcept
Definition: random.cpp:602
BENCHMARK(PrePadded)
unsigned char * begin()
Definition: uint256.h:58
Bench & run(char const *benchmarkName, Op &&op)
Repeatedly calls op() based on the configuration, and performs measurements.
Definition: nanobench.h:1134
void Finalize(unsigned char hash[OUTPUT_SIZE])
Definition: sha256.cpp:663
256-bit opaque blob.
Definition: uint256.h:124
static void PrePadded(benchmark::Bench &bench)
Definition: hashpadding.cpp:11
Main entry point to nanobench&#39;s benchmarking facility.
Definition: nanobench.h:583
A hasher class for SHA-256.
Definition: sha256.h:13