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202 lines
7 KiB
C++
202 lines
7 KiB
C++
// Copyright (c) 2019, The Monero Project
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//
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without modification, are
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// permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice, this list of
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// conditions and the following disclaimer.
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//
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
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// of conditions and the following disclaimer in the documentation and/or other
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// materials provided with the distribution.
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//
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// 3. Neither the name of the copyright holder nor the names of its contributors may be
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// used to endorse or promote products derived from this software without specific
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// prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#define IN_UNIT_TESTS
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#include <stdio.h>
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#include <math.h>
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#include "cryptonote_core/blockchain.h"
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#include "cryptonote_core/tx_pool.h"
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#include "cryptonote_core/cryptonote_core.h"
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#include "blockchain_db/testdb.h"
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#define LONG_TERM_BLOCK_WEIGHT_WINDOW 5000
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enum test_t
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{
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test_max = 0,
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test_lcg = 1,
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test_min = 2,
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};
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namespace
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{
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class TestDB: public cryptonote::BaseTestDB
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{
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private:
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struct block_t
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{
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size_t weight;
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uint64_t long_term_weight;
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};
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public:
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TestDB() { m_open = true; }
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virtual void add_block( const cryptonote::block& blk
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, size_t block_weight
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, uint64_t long_term_block_weight
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, const cryptonote::difficulty_type& cumulative_difficulty
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, const uint64_t& coins_generated
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, uint64_t num_rct_outs
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, const crypto::hash& blk_hash
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) override {
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blocks.push_back({block_weight, long_term_block_weight});
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}
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virtual uint64_t height() const override { return blocks.size(); }
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virtual size_t get_block_weight(const uint64_t &h) const override { return blocks[h].weight; }
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virtual uint64_t get_block_long_term_weight(const uint64_t &h) const override { return blocks[h].long_term_weight; }
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virtual std::vector<uint64_t> get_block_weights(uint64_t start_height, size_t count) const override {
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std::vector<uint64_t> ret;
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ret.reserve(count);
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while (count-- && start_height < blocks.size()) ret.push_back(blocks[start_height++].weight);
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return ret;
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}
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virtual std::vector<uint64_t> get_long_term_block_weights(uint64_t start_height, size_t count) const override {
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std::vector<uint64_t> ret;
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ret.reserve(count);
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while (count-- && start_height < blocks.size()) ret.push_back(blocks[start_height++].long_term_weight);
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return ret;
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}
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virtual crypto::hash get_block_hash_from_height(const uint64_t &height) const override {
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crypto::hash hash = crypto::null_hash;
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*(uint64_t*)&hash = height;
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return hash;
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}
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virtual crypto::hash top_block_hash(uint64_t *block_height = NULL) const override {
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uint64_t h = height();
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crypto::hash top = crypto::null_hash;
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if (h)
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*(uint64_t*)&top = h - 1;
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if (block_height)
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*block_height = h - 1;
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return top;
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}
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virtual void pop_block(cryptonote::block &blk, std::vector<cryptonote::transaction> &txs) override { blocks.pop_back(); }
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virtual void set_hard_fork_version(uint64_t height, uint8_t version) override { if (height >= hf.size()) hf.resize(height + 1); hf[height] = version; }
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virtual uint8_t get_hard_fork_version(uint64_t height) const override { if (height >= hf.size()) return 255; return hf[height]; }
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private:
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std::vector<block_t> blocks;
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std::vector<uint8_t> hf;
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};
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}
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#define PREFIX_WINDOW(hf_version,window) \
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std::unique_ptr<cryptonote::Blockchain> bc; \
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cryptonote::tx_memory_pool txpool(*bc); \
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bc.reset(new cryptonote::Blockchain(txpool)); \
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struct get_test_options { \
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const std::pair<uint8_t, uint64_t> hard_forks[3]; \
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const cryptonote::test_options test_options = { \
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hard_forks, \
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window, \
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}; \
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get_test_options(): hard_forks{std::make_pair(1, (uint64_t)0), std::make_pair((uint8_t)hf_version, (uint64_t)LONG_TERM_BLOCK_WEIGHT_WINDOW), std::make_pair((uint8_t)0, (uint64_t)0)} {} \
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} opts; \
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cryptonote::Blockchain *blockchain = bc.get(); \
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bool r = blockchain->init(new TestDB(), cryptonote::FAKECHAIN, true, &opts.test_options, 0, NULL); \
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if (!r) \
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{ \
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fprintf(stderr, "Failed to init blockchain\n"); \
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exit(1); \
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}
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#define PREFIX(hf_version) PREFIX_WINDOW(hf_version, LONG_TERM_BLOCK_WEIGHT_WINDOW)
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static uint32_t lcg_seed = 0;
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static uint32_t lcg()
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{
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lcg_seed = (lcg_seed * 0x100000001b3 + 0xcbf29ce484222325) & 0xffffffff;
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return lcg_seed;
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}
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static void test(test_t t, uint64_t blocks)
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{
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PREFIX(10);
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for (uint64_t h = 0; h < LONG_TERM_BLOCK_WEIGHT_WINDOW; ++h)
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{
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cryptonote::block b;
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b.major_version = 1;
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b.minor_version = 1;
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bc->get_db().add_block(std::make_pair(b, ""), 300000, 300000, bc->get_db().height(), bc->get_db().height(), {});
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if (!bc->update_next_cumulative_weight_limit())
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{
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fprintf(stderr, "Failed to update cumulative weight limit 1\n");
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exit(1);
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}
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}
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for (uint64_t h = 0; h < blocks; ++h)
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{
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uint64_t w;
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uint64_t effective_block_weight_median = bc->get_current_cumulative_block_weight_median();
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switch (t)
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{
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case test_lcg:
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{
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uint32_t r = lcg();
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int64_t wi = 90 + r % 500000 + 250000 + sin(h / 200.) * 350000;
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w = wi < 90 ? 90 : wi;
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break;
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}
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case test_max:
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w = bc->get_current_cumulative_block_weight_limit();
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break;
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case test_min:
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w = 90;
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break;
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default:
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exit(1);
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}
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uint64_t ltw = bc->get_next_long_term_block_weight(w);
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cryptonote::block b;
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b.major_version = 10;
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b.minor_version = 10;
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bc->get_db().add_block(std::make_pair(std::move(b), ""), w, ltw, bc->get_db().height(), bc->get_db().height(), {});
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if (!bc->update_next_cumulative_weight_limit())
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{
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fprintf(stderr, "Failed to update cumulative weight limit\n");
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exit(1);
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}
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std::cout << "H " << h << ", BW " << w << ", EMBW " << effective_block_weight_median << ", LTBW " << ltw << std::endl;
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}
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}
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int main()
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{
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test(test_max, 2 * LONG_TERM_BLOCK_WEIGHT_WINDOW);
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test(test_lcg, 9 * LONG_TERM_BLOCK_WEIGHT_WINDOW);
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test(test_min, 1 * LONG_TERM_BLOCK_WEIGHT_WINDOW);
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return 0;
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}
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