diff options
Diffstat (limited to 'src')
-rw-r--r-- | src/Makefile.test.include | 1 | ||||
-rw-r--r-- | src/test/validationinterface_tests.cpp | 63 | ||||
-rw-r--r-- | src/validationinterface.cpp | 4 |
3 files changed, 66 insertions, 2 deletions
diff --git a/src/Makefile.test.include b/src/Makefile.test.include index c3021743f4..3443ee089d 100644 --- a/src/Makefile.test.include +++ b/src/Makefile.test.include @@ -239,6 +239,7 @@ BITCOIN_TESTS =\ test/util_tests.cpp \ test/validation_block_tests.cpp \ test/validation_flush_tests.cpp \ + test/validationinterface_tests.cpp \ test/versionbits_tests.cpp if ENABLE_WALLET diff --git a/src/test/validationinterface_tests.cpp b/src/test/validationinterface_tests.cpp new file mode 100644 index 0000000000..b4aa2f0f3a --- /dev/null +++ b/src/test/validationinterface_tests.cpp @@ -0,0 +1,63 @@ +// Copyright (c) 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 <boost/test/unit_test.hpp> + +#include <consensus/validation.h> +#include <primitives/block.h> +#include <scheduler.h> +#include <util/check.h> +#include <validationinterface.h> + +BOOST_AUTO_TEST_SUITE(validationinterface_tests) + +class TestInterface : public CValidationInterface +{ +public: + TestInterface(std::function<void()> on_call = nullptr, std::function<void()> on_destroy = nullptr) + : m_on_call(std::move(on_call)), m_on_destroy(std::move(on_destroy)) + { + } + virtual ~TestInterface() + { + if (m_on_destroy) m_on_destroy(); + } + void BlockChecked(const CBlock& block, const BlockValidationState& state) override + { + if (m_on_call) m_on_call(); + } + static void Call() + { + CBlock block; + BlockValidationState state; + GetMainSignals().BlockChecked(block, state); + } + std::function<void()> m_on_call; + std::function<void()> m_on_destroy; +}; + +// Regression test to ensure UnregisterAllValidationInterfaces calls don't +// destroy a validation interface while it is being called. Bug: +// https://github.com/bitcoin/bitcoin/pull/18551 +BOOST_AUTO_TEST_CASE(unregister_all_during_call) +{ + bool destroyed = false; + + CScheduler scheduler; + GetMainSignals().RegisterBackgroundSignalScheduler(scheduler); + RegisterSharedValidationInterface(std::make_shared<TestInterface>( + [&] { + // First call should decrements reference count 2 -> 1 + UnregisterAllValidationInterfaces(); + BOOST_CHECK(!destroyed); + // Second call should not decrement reference count 1 -> 0 + UnregisterAllValidationInterfaces(); + BOOST_CHECK(!destroyed); + }, + [&] { destroyed = true; })); + TestInterface::Call(); + BOOST_CHECK(destroyed); +} + +BOOST_AUTO_TEST_SUITE_END() diff --git a/src/validationinterface.cpp b/src/validationinterface.cpp index c06647cb0d..11000774c0 100644 --- a/src/validationinterface.cpp +++ b/src/validationinterface.cpp @@ -67,8 +67,8 @@ public: void Clear() { LOCK(m_mutex); - for (auto it = m_list.begin(); it != m_list.end();) { - it = --it->count ? std::next(it) : m_list.erase(it); + for (const auto& entry : m_map) { + if (!--entry.second->count) m_list.erase(entry.second); } m_map.clear(); } |