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280 lines
8.7 KiB
C++
280 lines
8.7 KiB
C++
/**
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Lightweight profiler library for c++
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Copyright(C) 2016-2019 Sergey Yagovtsev, Victor Zarubkin
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Licensed under either of
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* MIT license (LICENSE.MIT or http://opensource.org/licenses/MIT)
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* Apache License, Version 2.0, (LICENSE.APACHE or http://www.apache.org/licenses/LICENSE-2.0)
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at your option.
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The MIT License
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
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of the Software, and to permit persons to whom the Software is furnished
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to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
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INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
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PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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USE OR OTHER DEALINGS IN THE SOFTWARE.
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The Apache License, Version 2.0 (the "License");
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You may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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**/
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#include <fstream>
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#include <QFile>
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#include <easy/writer.h>
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#include "common_functions.h"
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#include "globals.h"
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#include "file_reader.h"
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#ifdef min
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#undef min
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#endif
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#ifdef max
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#undef max
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#endif
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FileReader::FileReader()
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{
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}
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FileReader::~FileReader()
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{
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interrupt();
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}
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const bool FileReader::isFile() const
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{
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return m_isFile;
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}
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const bool FileReader::isSaving() const
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{
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return m_jobType == JobType::Saving;
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}
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const bool FileReader::isLoading() const
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{
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return m_jobType == JobType::Loading;
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}
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const bool FileReader::isSnapshot() const
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{
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return m_isSnapshot;
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}
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bool FileReader::done() const
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{
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return m_bDone.load(std::memory_order_acquire);
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}
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int FileReader::progress() const
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{
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return m_progress.load(std::memory_order_acquire);
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}
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unsigned int FileReader::size() const
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{
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return m_size.load(std::memory_order_acquire);
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}
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const QString& FileReader::filename() const
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{
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return m_filename;
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}
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void FileReader::load(const QString& _filename)
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{
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interrupt();
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m_jobType = JobType::Loading;
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m_isFile = true;
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m_isSnapshot = false;
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m_filename = _filename;
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m_thread = std::thread([this] (bool _enableStatistics)
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{
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const auto size = fillTreesFromFile(m_progress, m_filename.toStdString().c_str(), m_beginEndTime, m_serializedBlocks,
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m_serializedDescriptors, m_descriptors, m_blocks, m_blocksTree,
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m_bookmarks, m_descriptorsNumberInFile, m_version, m_pid,
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_enableStatistics, m_errorMessage);
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m_size.store(size, std::memory_order_release);
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m_progress.store(100, std::memory_order_release);
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m_bDone.store(true, std::memory_order_release);
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}, EASY_GLOBALS.enable_statistics);
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}
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void FileReader::load(std::stringstream& _stream)
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{
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interrupt();
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m_jobType = JobType::Loading;
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m_isFile = false;
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m_isSnapshot = false;
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m_filename.clear();
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#if defined(__GNUC__) && __GNUC__ < 5 && !defined(__llvm__)
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// gcc 4 has a known bug which has been solved in gcc 5:
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// std::stringstream has no swap() method :(
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// have to copy all contents... Use gcc 5 or higher!
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#pragma message "Warning: in gcc 4 and lower std::stringstream has no swap()! Memory consumption may increase! Better use gcc 5 or higher instead."
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m_stream.str(_stream.str());
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#else
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m_stream.swap(_stream);
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#endif
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m_thread = std::thread([this] (bool _enableStatistics)
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{
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std::ofstream cache_file(NETWORK_CACHE_FILE, std::fstream::binary);
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if (cache_file.is_open())
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{
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cache_file << m_stream.str();
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cache_file.close();
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}
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const auto size = fillTreesFromStream(m_progress, m_stream, m_beginEndTime, m_serializedBlocks, m_serializedDescriptors,
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m_descriptors, m_blocks, m_blocksTree, m_bookmarks, m_descriptorsNumberInFile,
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m_version, m_pid, _enableStatistics, m_errorMessage);
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m_size.store(size, std::memory_order_release);
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m_progress.store(100, std::memory_order_release);
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m_bDone.store(true, std::memory_order_release);
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}, EASY_GLOBALS.enable_statistics);
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}
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void FileReader::save(const QString& _filename, profiler::timestamp_t _beginTime, profiler::timestamp_t _endTime,
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const profiler::SerializedData& _serializedDescriptors,
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const profiler::descriptors_list_t& _descriptors, profiler::block_id_t descriptors_count,
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const profiler::thread_blocks_tree_t& _trees, const profiler::bookmarks_t& bookmarks,
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profiler::block_getter_fn block_getter, profiler::processid_t _pid, bool snapshotMode)
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{
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interrupt();
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m_jobType = JobType::Saving;
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m_isFile = true;
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m_isSnapshot = snapshotMode;
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m_filename = _filename;
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auto serializedDescriptors = std::ref(_serializedDescriptors);
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auto descriptors = std::ref(_descriptors);
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auto trees = std::ref(_trees);
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auto bookmarksRef = std::ref(bookmarks);
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m_thread = std::thread([=] (profiler::block_getter_fn getter)
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{
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const QString tmpFile = m_filename + ".tmp";
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const auto result = writeTreesToFile(m_progress, tmpFile.toStdString().c_str(), serializedDescriptors,
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descriptors, descriptors_count, trees, bookmarksRef, getter,
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_beginTime, _endTime, _pid, m_errorMessage);
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if (result == 0 || !m_errorMessage.str().empty())
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{
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// Remove temporary file in case of error
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QFile::remove(tmpFile);
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}
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else
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{
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// Remove old file if exists
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{
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QFile out(m_filename);
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if (out.exists())
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out.remove();
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}
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QFile::rename(tmpFile, m_filename);
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}
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m_progress.store(100, std::memory_order_release);
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m_bDone.store(true, std::memory_order_release);
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}, std::move(block_getter));
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}
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void FileReader::interrupt()
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{
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join();
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m_bDone.store(false, std::memory_order_release);
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m_size.store(0, std::memory_order_release);
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m_serializedBlocks.clear();
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m_serializedDescriptors.clear();
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m_descriptors.clear();
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m_blocks.clear();
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m_blocksTree.clear();
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m_bookmarks.clear();
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m_descriptorsNumberInFile = 0;
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m_version = 0;
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m_pid = 0;
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m_jobType = JobType::Idle;
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m_isSnapshot = false;
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profiler_gui::clear_stream(m_stream);
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profiler_gui::clear_stream(m_errorMessage);
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}
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void FileReader::get(profiler::SerializedData& _serializedBlocks, profiler::SerializedData& _serializedDescriptors,
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profiler::descriptors_list_t& _descriptors, profiler::blocks_t& _blocks,
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profiler::thread_blocks_tree_t& _trees, profiler::bookmarks_t& bookmarks,
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profiler::BeginEndTime& beginEndTime, uint32_t& _descriptorsNumberInFile, uint32_t& _version,
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profiler::processid_t& _pid, QString& _filename)
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{
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if (done())
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{
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m_serializedBlocks.swap(_serializedBlocks);
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m_serializedDescriptors.swap(_serializedDescriptors);
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profiler::descriptors_list_t(std::move(m_descriptors)).swap(_descriptors);
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m_blocks.swap(_blocks);
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m_blocksTree.swap(_trees);
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m_bookmarks.swap(bookmarks);
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m_filename.swap(_filename);
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beginEndTime = m_beginEndTime;
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_descriptorsNumberInFile = m_descriptorsNumberInFile;
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_version = m_version;
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_pid = m_pid;
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}
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}
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void FileReader::join()
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{
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m_progress.store(-100, std::memory_order_release);
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if (m_thread.joinable())
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{
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m_thread.join();
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}
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m_progress.store(0, std::memory_order_release);
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}
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QString FileReader::getError() const
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{
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return QString(m_errorMessage.str().c_str());
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}
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