128 lines
3.5 KiB
C
128 lines
3.5 KiB
C
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/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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#ifndef THRIFT_TEST_LOADGEN_SCOREBOARDOPVECTOR_H_
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#define THRIFT_TEST_LOADGEN_SCOREBOARDOPVECTOR_H_ 1
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#include "thrift/lib/cpp/test/loadgen/ScoreBoard.h"
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#include <assert.h>
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#include <vector>
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#include <stddef.h>
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namespace apache { namespace thrift { namespace loadgen {
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/**
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* A vector of per-operation scoreboard data.
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*
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* This is useful for implementing ScoreBoard classes.
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*
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* The OpDataT class must have:
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* - a default constructor
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* - a zero() method
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* - an accumulate() method
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*/
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template<typename OpDataT>
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class ScoreBoardOpVector {
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private:
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typedef std::vector<OpDataT> DataVector;
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public:
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typedef typename DataVector::iterator Iterator;
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typedef typename DataVector::const_iterator ConstIterator;
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ScoreBoardOpVector(uint32_t numOpsHint) {
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resize(numOpsHint);
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}
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OpDataT* getOpData(uint32_t opType) {
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if (opType >= opData_.size()) {
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resize(opType + 1);
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}
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return &opData_[opType];
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}
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const OpDataT* getOpDataOrNull(uint32_t opType) const {
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if (opType >= opData_.size()) {
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return NULL;
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}
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return &opData_[opType];
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}
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void zero() {
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for (Iterator it = opData_.begin(); it != opData_.end(); ++it) {
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it->zero();
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}
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}
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void accumulate(const ScoreBoardOpVector<OpDataT>* other) {
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if (other->opData_.size() > opData_.size()) {
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resize(other->opData_.size());
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}
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uint32_t index = 0;
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for (ConstIterator it = other->opData_.begin();
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it != other->opData_.end();
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++it, ++index) {
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opData_[index].accumulate(&(*it));
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}
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}
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void accumulateOverOps(OpDataT* result) const {
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result->zero();
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for (ConstIterator it = opData_.begin(); it != opData_.end(); ++it) {
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result->accumulate(&(*it));
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}
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}
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Iterator begin() {
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return opData_.begin();
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}
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Iterator end() {
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return opData_.end();
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}
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ConstIterator begin() const {
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return opData_.begin();
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}
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ConstIterator end() const {
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return opData_.end();
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}
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private:
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void resize(uint32_t numOps) {
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assert(numOps > opData_.size());
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// We could add some padding here. In the past, when using glibc malloc
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// with QpsScoreBoard and just 1 operation, I've seen the opData for two
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// different worker threads end up being allocated on the same cache line.
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// This hurts peformance, since the two worker threads run on different
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// CPUs and they each keep evicting the cache line from the other CPU.
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// With jemalloc this doesn't seem to happen anymore, and allocating more
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// space then necessary here can very slightly slow down performance.
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opData_.resize(numOps);
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}
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DataVector opData_;
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};
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}}} // apache::thrift::loadgen
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#endif // THRIFT_TEST_LOADGEN_SCOREBOARDOPVECTOR_H_
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