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81cea5d4ee
To avoid future code changes from reintroducing the ambiguity fixed by the previous commit, mark m_tip_block private and Assume that it's not set to uint256::ZERO.
76 lines
2.5 KiB
C++
76 lines
2.5 KiB
C++
// Copyright (c) 2023 The Bitcoin Core developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#ifndef BITCOIN_NODE_KERNEL_NOTIFICATIONS_H
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#define BITCOIN_NODE_KERNEL_NOTIFICATIONS_H
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#include <kernel/notifications_interface.h>
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#include <sync.h>
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#include <threadsafety.h>
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#include <uint256.h>
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#include <atomic>
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#include <cstdint>
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#include <functional>
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class ArgsManager;
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class CBlockIndex;
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enum class SynchronizationState;
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struct bilingual_str;
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namespace kernel {
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enum class Warning;
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} // namespace kernel
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namespace node {
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class Warnings;
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static constexpr int DEFAULT_STOPATHEIGHT{0};
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class KernelNotifications : public kernel::Notifications
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{
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public:
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KernelNotifications(const std::function<bool()>& shutdown_request, std::atomic<int>& exit_status, node::Warnings& warnings)
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: m_shutdown_request(shutdown_request), m_exit_status{exit_status}, m_warnings{warnings} {}
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[[nodiscard]] kernel::InterruptResult blockTip(SynchronizationState state, CBlockIndex& index) override EXCLUSIVE_LOCKS_REQUIRED(!m_tip_block_mutex);
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void headerTip(SynchronizationState state, int64_t height, int64_t timestamp, bool presync) override;
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void progress(const bilingual_str& title, int progress_percent, bool resume_possible) override;
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void warningSet(kernel::Warning id, const bilingual_str& message) override;
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void warningUnset(kernel::Warning id) override;
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void flushError(const bilingual_str& message) override;
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void fatalError(const bilingual_str& message) override;
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//! Block height after which blockTip notification will return Interrupted{}, if >0.
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int m_stop_at_height{DEFAULT_STOPATHEIGHT};
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//! Useful for tests, can be set to false to avoid shutdown on fatal error.
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bool m_shutdown_on_fatal_error{true};
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Mutex m_tip_block_mutex;
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std::condition_variable m_tip_block_cv GUARDED_BY(m_tip_block_mutex);
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//! The block for which the last blockTip notification was received.
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//! It's first set when the tip is connected during node initialization.
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//! Might be unset during an early shutdown.
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std::optional<uint256> TipBlock() EXCLUSIVE_LOCKS_REQUIRED(m_tip_block_mutex);
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private:
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const std::function<bool()>& m_shutdown_request;
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std::atomic<int>& m_exit_status;
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node::Warnings& m_warnings;
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std::optional<uint256> m_tip_block GUARDED_BY(m_tip_block_mutex);
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};
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void ReadNotificationArgs(const ArgsManager& args, KernelNotifications& notifications);
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} // namespace node
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#endif // BITCOIN_NODE_KERNEL_NOTIFICATIONS_H
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