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25 lines
428 B
C++
25 lines
428 B
C++
#pragma once
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#include <Common/RWLock.h>
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namespace DB
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{
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using TableLockHolder = RWLockImpl::LockHolder;
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/// Table exclusive lock, holds both alter and drop locks. Useful for DROP-like
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/// queries.
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struct TableExclusiveLockHolder
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{
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void release() { *this = TableExclusiveLockHolder(); }
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private:
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friend class IStorage;
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/// Order is important.
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TableLockHolder alter_lock;
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TableLockHolder drop_lock;
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};
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}
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