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