Branch data Line data Source code
1 : : // Copyright (c) 2019-present 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 <sync.h>
6 : : #include <test/util/coins.h>
7 : : #include <test/util/random.h>
8 : : #include <test/util/setup_common.h>
9 : : #include <validation.h>
10 : :
11 : : #include <boost/test/unit_test.hpp>
12 : :
13 : : BOOST_FIXTURE_TEST_SUITE(validation_flush_tests, TestingSetup)
14 : :
15 : : //! Verify that Chainstate::GetCoinsCacheSizeState() switches from OK→LARGE→CRITICAL
16 : : //! at the expected utilization thresholds, first with *no* mempool head-room,
17 : : //! then with additional mempool head-room.
18 [ + - + - : 7 : BOOST_AUTO_TEST_CASE(getcoinscachesizestate)
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19 : : {
20 : 1 : Chainstate& chainstate{m_node.chainman->ActiveChainstate()};
21 : :
22 : 1 : LOCK(::cs_main);
23 [ + - ]: 1 : CCoinsViewCache& view{chainstate.CoinsTip()};
24 : :
25 : : // Sanity: an empty cache should be ≲ 1 chunk (~ 256 KiB).
26 [ + - + - : 1 : BOOST_CHECK_LT(view.DynamicMemoryUsage() / (256 * 1024.0), 1.1);
+ - ]
27 : :
28 : 1 : constexpr size_t MAX_COINS_BYTES{8_MiB};
29 : 1 : constexpr size_t MAX_MEMPOOL_BYTES{4_MiB};
30 : 1 : constexpr size_t MAX_ATTEMPTS{50'000};
31 : :
32 : : // Run the same growth-path twice: first with 0 head-room, then with extra head-room
33 [ + + ]: 3 : for (size_t max_mempool_size_bytes : {size_t{0}, MAX_MEMPOOL_BYTES}) {
34 : 2 : const int64_t full_cap{int64_t(MAX_COINS_BYTES + max_mempool_size_bytes)};
35 [ + - ]: 2 : const int64_t large_cap{LargeCoinsCacheThreshold(full_cap)};
36 : :
37 : : // OK → LARGE
38 [ + - ]: 2 : auto state{chainstate.GetCoinsCacheSizeState(MAX_COINS_BYTES, max_mempool_size_bytes)};
39 [ + - + - : 47167 : for (size_t i{0}; i < MAX_ATTEMPTS && int64_t(view.DynamicMemoryUsage()) <= large_cap; ++i) {
+ + ]
40 [ + - + - ]: 47165 : BOOST_CHECK_EQUAL(state, CoinsCacheSizeState::OK);
41 [ + - ]: 47165 : AddTestCoin(m_rng, view);
42 [ + - ]: 47165 : state = chainstate.GetCoinsCacheSizeState(MAX_COINS_BYTES, max_mempool_size_bytes);
43 : : }
44 : :
45 : : // LARGE → CRITICAL
46 [ + - + - : 9828 : for (size_t i{0}; i < MAX_ATTEMPTS && int64_t(view.DynamicMemoryUsage()) <= full_cap; ++i) {
+ + ]
47 [ + - + - ]: 9826 : BOOST_CHECK_EQUAL(state, CoinsCacheSizeState::LARGE);
48 [ + - ]: 9826 : AddTestCoin(m_rng, view);
49 [ + - ]: 9826 : state = chainstate.GetCoinsCacheSizeState(MAX_COINS_BYTES, max_mempool_size_bytes);
50 : : }
51 [ + - + - ]: 2 : BOOST_CHECK_EQUAL(state, CoinsCacheSizeState::CRITICAL);
52 : : }
53 : :
54 : : // Default thresholds (no explicit limits) permit many more coins.
55 [ + + ]: 1001 : for (int i{0}; i < 1'000; ++i) {
56 [ + - ]: 1000 : AddTestCoin(m_rng, view);
57 [ + - + - : 1000 : BOOST_CHECK_EQUAL(chainstate.GetCoinsCacheSizeState(), CoinsCacheSizeState::OK);
+ - ]
58 : : }
59 : :
60 : : // CRITICAL → OK via Flush
61 [ + - + - : 1 : BOOST_CHECK_EQUAL(chainstate.GetCoinsCacheSizeState(MAX_COINS_BYTES, /*max_mempool_size_bytes=*/0), CoinsCacheSizeState::CRITICAL);
+ - ]
62 [ + - ]: 1 : view.SetBestBlock(m_rng.rand256());
63 [ + - + - : 2 : BOOST_REQUIRE(view.Flush());
+ - + - ]
64 [ + - + - : 1 : BOOST_CHECK_EQUAL(chainstate.GetCoinsCacheSizeState(MAX_COINS_BYTES, /*max_mempool_size_bytes=*/0), CoinsCacheSizeState::OK);
+ - + - ]
65 : 1 : }
66 : :
67 : : BOOST_AUTO_TEST_SUITE_END()
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