| /** @file |
| |
| Milestones |
| |
| @section license License |
| |
| 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. |
| */ |
| |
| #pragma once |
| |
| #include "ts/apidefs.h" |
| |
| #include "tscore/ink_platform.h" |
| #include "tscore/ink_hrtime.h" |
| |
| #include "I_EventSystem.h" |
| |
| template <class T, size_t entries> class Milestones |
| { |
| public: |
| ink_hrtime & |
| operator[](T ms) |
| { |
| return this->_milestones[static_cast<size_t>(ms)]; |
| } |
| ink_hrtime |
| operator[](T ms) const |
| { |
| return this->_milestones[static_cast<size_t>(ms)]; |
| } |
| |
| /** |
| * Mark given milestone with timestamp if it's not marked yet |
| * @param ms The milestone to mark |
| * @return N/A |
| */ |
| void |
| mark(T ms) |
| { |
| if (this->_milestones[static_cast<size_t>(ms)] == 0) { |
| this->_milestones[static_cast<size_t>(ms)] = Thread::get_hrtime(); |
| } |
| } |
| |
| /** |
| * Takes two milestones and returns the difference. |
| * @param start The start time |
| * @param end The end time |
| * @return The difference time in milliseconds |
| */ |
| int64_t |
| difference_msec(T ms_start, T ms_end) const |
| { |
| if (this->_milestones[static_cast<size_t>(ms_end)] == 0) { |
| return -1; |
| } |
| return ink_hrtime_to_msec(this->_milestones[static_cast<size_t>(ms_end)] - this->_milestones[static_cast<size_t>(ms_start)]); |
| } |
| |
| /** |
| * Takes two milestones and returns the difference. |
| * @param start The start time |
| * @param end The end time |
| * @return A double that is the difference time in seconds |
| */ |
| double |
| difference_sec(T ms_start, T ms_end) const |
| { |
| return static_cast<double>(difference_msec(ms_start, ms_end) / 1000.0); |
| } |
| |
| /** |
| * Takes two milestones and returns the difference. |
| * @param start The start time |
| * @param end The end time |
| * @return The difference time in high-resolution time |
| */ |
| ink_hrtime |
| elapsed(T ms_start, T ms_end) const |
| { |
| return this->_milestones[static_cast<size_t>(ms_end)] - this->_milestones[static_cast<size_t>(ms_start)]; |
| } |
| |
| private: |
| std::array<ink_hrtime, entries> _milestones = {{0}}; |
| }; |
| |
| // For compatibility with HttpSM.h and HttpTransact.h |
| using TransactionMilestones = Milestones<TSMilestonesType, TS_MILESTONE_LAST_ENTRY>; |