79d579f4e1
This commit does not change behavior.
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44 lines
1.1 KiB
C++
44 lines
1.1 KiB
C++
// Copyright (c) 2018 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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#include <interfaces/chain.h>
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#include <sync.h>
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#include <util/system.h>
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#include <validation.h>
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#include <memory>
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#include <utility>
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namespace interfaces {
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namespace {
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class LockImpl : public Chain::Lock
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{
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};
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class LockingStateImpl : public LockImpl, public UniqueLock<CCriticalSection>
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{
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using UniqueLock::UniqueLock;
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};
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class ChainImpl : public Chain
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{
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public:
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std::unique_ptr<Chain::Lock> lock(bool try_lock) override
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{
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auto result = MakeUnique<LockingStateImpl>(::cs_main, "cs_main", __FILE__, __LINE__, try_lock);
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if (try_lock && result && !*result) return {};
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// std::move necessary on some compilers due to conversion from
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// LockingStateImpl to Lock pointer
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return std::move(result);
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}
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std::unique_ptr<Chain::Lock> assumeLocked() override { return MakeUnique<LockImpl>(); }
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};
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} // namespace
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std::unique_ptr<Chain> MakeChain() { return MakeUnique<ChainImpl>(); }
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} // namespace interfaces
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