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dbms: Server: Use PODArray instead of std::vector in sequenceMatch/Count functions implementation [#METR-18844]

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This commit is contained in:
Alexey Arno 2016-06-30 19:31:48 +03:00
parent df5e85bb34
commit 86f14711cc
1 changed files with 7 additions and 6 deletions
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13
dbms/include/DB/AggregateFunctions/AggregateFunctionSequenceMatch.h
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@ -8,6 +8,7 @@
#include <boost/range/iterator_range_core.hpp>
#include <DB/Parsers/ExpressionElementParsers.h>
#include <DB/Parsers/ASTLiteral.h>
#include <DB/Common/PODArray.h>
#include <bitset>
#include <stack>
@ -44,7 +45,8 @@ struct AggregateFunctionSequenceMatchData final
using Comparator = ComparePairFirst<std::less>;
bool sorted = true;
std::vector<TimestampEvents> eventsList;
static constexpr size_t bytes_in_arena = 64;
PODArray<TimestampEvents, bytes_in_arena, AllocatorWithStackMemory<Allocator<false>, bytes_in_arena>> eventsList;
void add(const Timestamp timestamp, const Events & events)
{
@ -60,7 +62,7 @@ struct AggregateFunctionSequenceMatchData final
{
const auto size = eventsList.size();
eventsList.insert(std::end(eventsList), std::begin(other.eventsList), std::end(other.eventsList));
eventsList.insert(std::begin(other.eventsList), std::end(other.eventsList));
/// either sort whole container or do so partially merging ranges afterwards
if (!sorted && !other.sorted)
@ -262,14 +264,13 @@ private:
PatternAction(const PatternActionType type, const std::uint32_t extra = 0) : type{type}, extra{extra} {}
};
using PatternActions = std::vector<PatternAction>;
using PatternActions = PODArray<PatternAction>;
void parsePattern()
{
PatternActions actions{
{ PatternActionType::KleeneStar }
};
PatternActions actions;
actions.emplace_back(PatternActionType::KleeneStar);
ParserString special_open_p("(?");
ParserString special_close_p(")");