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52 lines
1.7 KiB
C++
52 lines
1.7 KiB
C++
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#include <DB/Storages/MergeTree/MergeList.h>
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#include <Poco/Ext/ThreadNumber.h>
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namespace DB
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{
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MergeListElement::MergeListElement(const std::string & database, const std::string & table, const std::string & result_part_name,
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const Context & context)
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: database{database}, table{table}, result_part_name{result_part_name}, thread_number{Poco::ThreadNumber::get()}
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{
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/// Each merge is executed into separate background processing pool thread
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background_pool_task_memory_tracker = current_memory_tracker;
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if (background_pool_task_memory_tracker)
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{
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background_pool_task_memory_tracker->setNext(&memory_tracker);
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memory_tracker.setNext(context.getMergesMemoryTracker());
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}
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}
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MergeInfo MergeListElement::getInfo() const
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{
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MergeInfo res;
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res.database = database;
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res.table = table;
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res.result_part_name = result_part_name;
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res.elapsed = watch.elapsedSeconds();
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res.progress = progress;
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res.num_parts = num_parts;
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res.total_size_bytes_compressed = total_size_bytes_compressed;
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res.total_size_marks = total_size_marks;
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res.bytes_read_uncompressed = bytes_read_uncompressed.load(std::memory_order_relaxed);
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res.bytes_written_uncompressed = bytes_written_uncompressed.load(std::memory_order_relaxed);
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res.rows_read = rows_read.load(std::memory_order_relaxed);
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res.rows_written = rows_written.load(std::memory_order_relaxed);
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res.columns_written = columns_written.load(std::memory_order_relaxed);
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res.memory_usage = memory_tracker.get();
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res.thread_number = thread_number;
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return res;
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}
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MergeListElement::~MergeListElement()
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{
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/// Unplug memory_tracker from current background processing pool thread
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if (background_pool_task_memory_tracker)
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background_pool_task_memory_tracker->setNext(nullptr);
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}
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}
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