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149 lines
3.6 KiB
C++
149 lines
3.6 KiB
C++
/*
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* The contents of this file are subject to the Initial
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* Developer's Public License Version 1.0 (the "License");
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* you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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* http://www.ibphoenix.com/main.nfs?a=ibphoenix&page=ibp_idpl.
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*
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* Software distributed under the License is distributed AS IS,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied.
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* See the License for the specific language governing rights
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* and limitations under the License.
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*
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* The Original Code was created by Dmitry Yemanov
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* for the Firebird Open Source RDBMS project.
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*
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* Copyright (c) 2006 Dmitry Yemanov <dimitr@users.sf.net>
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* and all contributors signed below.
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*
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* All Rights Reserved.
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* Contributor(s): ______________________________________.
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*/
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#ifndef JRD_RUNTIME_STATISTICS_H
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#define JRD_RUNTIME_STATISTICS_H
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#include "../common/classes/alloc.h"
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#include "../common/classes/array.h"
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#include "../common/classes/init.h"
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#include "../common/classes/tree.h"
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#include "../jrd/ntrace.h"
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namespace Jrd {
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class Database;
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// Performance counters for individual table
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struct RelationCounts
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{
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SLONG rlc_relation_id; // Relation ID
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SINT64 rlc_counter[DBB_max_rel_count];
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inline static const SLONG& generate(const void* sender, const RelationCounts& item)
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{
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return item.rlc_relation_id;
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}
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};
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typedef Firebird::BePlusTree<RelationCounts, SLONG, Firebird::MemoryPool, RelationCounts> RelationCountsTree;
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typedef Firebird::HalfStaticArray<TraceCounts, 5> TraceCountsArray;
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// Runtime statistics class
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class RuntimeStatistics
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{
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public:
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enum StatType {
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PAGE_FETCHES = 0,
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PAGE_READS,
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PAGE_MARKS,
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PAGE_WRITES,
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FLUSHES,
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RECORD_SEQ_READS,
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RECORD_IDX_READS,
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RECORD_INSERTS,
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RECORD_UPDATES,
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RECORD_DELETES,
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RECORD_BACKOUTS,
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RECORD_PURGES,
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RECORD_EXPUNGES,
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SORTS,
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SORT_GETS,
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SORT_PUTS,
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STMT_PREPARES,
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STMT_EXECUTES,
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TOTAL_ITEMS // last
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};
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RuntimeStatistics(MemoryPool& pool) : rel_counts(&pool)
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{
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reset();
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}
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RuntimeStatistics(MemoryPool& pool, const RuntimeStatistics& other);
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~RuntimeStatistics() {}
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SINT64 getValue(const StatType index) const
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{
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return values[index];
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}
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void reset();
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void bumpValue(const StatType index)
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{
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++values[index];
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}
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void bumpValue(StatType index, SLONG relation_id);
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// Calculate difference between counts stored in this object and current
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// counts of given request. Counts stored in object are destroyed.
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PerformanceInfo* computeDifference(Database* dbb, const RuntimeStatistics& new_stat,
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PerformanceInfo& dest, TraceCountsArray& temp);
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// bool operator==(const RuntimeStatistics& other) const;
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// bool operator!=(const RuntimeStatistics& other) const;
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RuntimeStatistics& operator+=(const RuntimeStatistics& other)
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{
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for (size_t i = 0; i < TOTAL_ITEMS; ++i)
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values[i] += other.values[i];
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addRelCounts(other.rel_counts, true);
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return *this;
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}
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RuntimeStatistics& operator-=(const RuntimeStatistics& other)
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{
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for (size_t i = 0; i < TOTAL_ITEMS; ++i)
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values[i] -= other.values[i];
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addRelCounts(other.rel_counts, false);
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return *this;
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}
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static RuntimeStatistics* getDummy()
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{
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return &dummy;
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}
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private:
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void addRelCounts(const RelationCountsTree& other, bool add);
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SINT64 values[TOTAL_ITEMS];
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RelationCountsTree rel_counts;
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// This dummy RuntimeStatistics is used instead of missing elements in tdbb,
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// helping us avoid conditional checks in time-critical places of code.
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// Values of it contain actually garbage - don't be surprised when debugging.
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static Firebird::GlobalPtr<RuntimeStatistics> dummy;
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};
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} // namespace
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#endif // JRD_RUNTIME_STATISTICS_H
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