| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you under the Apache License, Version 2.0 (the |
| // "License"); you may not use this file except in compliance |
| // with the License. You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, |
| // software distributed under the License is distributed on an |
| // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| // KIND, either express or implied. See the License for the |
| // specific language governing permissions and limitations |
| // under the License. |
| |
| #include "kudu/common/iterator_stats.h" |
| |
| #include <glog/logging.h> |
| |
| #include "kudu/gutil/strings/substitute.h" |
| |
| namespace kudu { |
| |
| using std::string; |
| using strings::Substitute; |
| |
| IteratorStats::IteratorStats() |
| : cells_read(0), |
| bytes_read(0), |
| blocks_read(0), |
| predicates_disabled(0) { |
| } |
| |
| string IteratorStats::ToString() const { |
| return Substitute("cells_read=$0 bytes_read=$1 blocks_read=$2 predicates_disabled=$3", |
| cells_read, bytes_read, blocks_read, predicates_disabled); |
| } |
| |
| IteratorStats& IteratorStats::operator+=(const IteratorStats& other) { |
| cells_read += other.cells_read; |
| bytes_read += other.bytes_read; |
| blocks_read += other.blocks_read; |
| predicates_disabled += other.predicates_disabled; |
| DCheckNonNegative(); |
| return *this; |
| } |
| |
| IteratorStats& IteratorStats::operator-=(const IteratorStats& other) { |
| cells_read -= other.cells_read; |
| bytes_read -= other.bytes_read; |
| blocks_read -= other.blocks_read; |
| predicates_disabled -= other.predicates_disabled; |
| DCheckNonNegative(); |
| return *this; |
| } |
| |
| IteratorStats IteratorStats::operator+(const IteratorStats& other) { |
| IteratorStats copy = *this; |
| copy += other; |
| return copy; |
| } |
| |
| IteratorStats IteratorStats::operator-(const IteratorStats& other) { |
| IteratorStats copy = *this; |
| copy -= other; |
| return copy; |
| } |
| |
| void IteratorStats::DCheckNonNegative() const { |
| DCHECK_GE(cells_read, 0); |
| DCHECK_GE(bytes_read, 0); |
| DCHECK_GE(blocks_read, 0); |
| DCHECK_GE(predicates_disabled, 0); |
| } |
| } // namespace kudu |