/* * Copyright (C) 2018 The Android Open Source Project * * Licensed 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 "src/trace_processor/row_iterators.h" #include <algorithm> #include "src/trace_processor/sqlite_utils.h" namespace perfetto { namespace trace_processor { namespace { template <typename Iterator> uint32_t FindNextOffset(Iterator begin, Iterator end, uint32_t offset) { auto prev_it = begin + static_cast<ptrdiff_t>(offset); auto current_it = std::find(prev_it, end, true); return static_cast<uint32_t>(std::distance(begin, current_it)); } uint32_t FindNextOffset(const std::vector<bool>& filter, uint32_t offset, bool desc) { if (desc) return FindNextOffset(filter.rbegin(), filter.rend(), offset); return FindNextOffset(filter.begin(), filter.end(), offset); } } // namespace RowIterator::~RowIterator() = default; RangeRowIterator::RangeRowIterator(uint32_t start_row, uint32_t end_row, bool desc) : start_row_(start_row), end_row_(end_row), desc_(desc) {} RangeRowIterator::RangeRowIterator(uint32_t start_row, bool desc, std::vector<bool> row_filter) : start_row_(start_row), end_row_(start_row_ + static_cast<uint32_t>(row_filter.size())), desc_(desc), row_filter_(std::move(row_filter)) { if (start_row_ < end_row_) offset_ = FindNextOffset(row_filter_, offset_, desc_); } void RangeRowIterator::NextRow() { PERFETTO_DCHECK(!IsEnd()); offset_++; if (!row_filter_.empty()) offset_ = FindNextOffset(row_filter_, offset_, desc_); } bool RangeRowIterator::IsEnd() { return offset_ >= end_row_ - start_row_; } uint32_t RangeRowIterator::Row() { return desc_ ? end_row_ - offset_ - 1 : start_row_ + offset_; } uint32_t RangeRowIterator::RowCount() const { if (row_filter_.empty()) { return end_row_ - start_row_; } auto count = std::count(row_filter_.begin(), row_filter_.end(), true); return static_cast<uint32_t>(count); } VectorRowIterator::VectorRowIterator(std::vector<uint32_t> row_indices) : row_indices_(std::move(row_indices)) {} VectorRowIterator::~VectorRowIterator() = default; void VectorRowIterator::NextRow() { offset_++; } bool VectorRowIterator::IsEnd() { return offset_ >= row_indices_.size(); } uint32_t VectorRowIterator::Row() { return row_indices_[offset_]; } } // namespace trace_processor } // namespace perfetto