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38 lines
1012 B
C++
38 lines
1012 B
C++
#pragma once
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#ifdef OS_LINUX /// Because of 'sigqueue' functions and RT signals.
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#include <mutex>
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#include <ext/shared_ptr_helper.h>
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#include <Storages/System/IStorageSystemOneBlock.h>
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namespace DB
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{
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class Context;
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/// Allows to introspect stack trace of all server threads.
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/// It acts like an embedded debugger.
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/// More than one instance of this table cannot be used.
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class StorageSystemStackTrace final : public ext::shared_ptr_helper<StorageSystemStackTrace>, public IStorageSystemOneBlock<StorageSystemStackTrace>
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{
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friend struct ext::shared_ptr_helper<StorageSystemStackTrace>;
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public:
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String getName() const override { return "SystemStackTrace"; }
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static NamesAndTypesList getNamesAndTypes();
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StorageSystemStackTrace(const String & name_);
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protected:
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using IStorageSystemOneBlock::IStorageSystemOneBlock;
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void fillData(MutableColumns & res_columns, const Context & context, const SelectQueryInfo & query_info) const override;
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mutable std::mutex mutex;
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};
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}
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#endif
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