hashpadding.cpp

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// Copyright (c) 2015-2020 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 <hash.h>
#include <random.h>
#include <uint256.h>
 
 
static void PrePadded(benchmark::Bench& bench)
{
 
    CSHA256 hasher;
 
    // Setup the salted hasher
    uint256 nonce = GetRandHash();
    hasher.Write(nonce.begin(), 32);
    hasher.Write(nonce.begin(), 32);
    uint256 data = GetRandHash();
    bench.run([&] {
        unsigned char out[32];
        CSHA256 h = hasher;
        h.Write(data.begin(), 32);
        h.Finalize(out);
    });
}
 
BENCHMARK(PrePadded);
 
static void RegularPadded(benchmark::Bench& bench)
{
    CSHA256 hasher;
 
    // Setup the salted hasher
    uint256 nonce = GetRandHash();
    uint256 data = GetRandHash();
    bench.run([&] {
        unsigned char out[32];
        CSHA256 h = hasher;
        h.Write(nonce.begin(), 32);
        h.Write(data.begin(), 32);
        h.Finalize(out);
    });
}
 
BENCHMARK(RegularPadded);