94 lines
2.8 KiB
C++
94 lines
2.8 KiB
C++
/*
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Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef ABSTRACT_PROGRESS_WATCHER_INCLUDED
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#define ABSTRACT_PROGRESS_WATCHER_INCLUDED
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#include "i_progress_watcher.h"
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#include "abstract_chain_element.h"
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#include "base/atomic.h"
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#include <boost/chrono.hpp>
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namespace Mysql{
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namespace Tools{
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namespace Dump{
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/**
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Gathers information about progress of current dump progress and format
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messages on progress.Also it should expose API for receiving processed
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progress information: collected objects and rows information along with time
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elapsed, ETA.
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*/
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class Abstract_progress_watcher
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: public virtual I_progress_watcher, public Abstract_chain_element
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{
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public:
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void new_chain_created(Item_processing_data* new_chain_process_data);
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void object_processing_started(Item_processing_data* process_data);
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void object_processing_ended(Item_processing_data* finished_process_data);
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void crawler_completed(I_crawler* crawler);
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protected:
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Abstract_progress_watcher(Mysql::I_callable
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<bool, const Mysql::Tools::Base::Message_data&>*
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message_handler, Simple_id_generator* object_id_generator);
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class Progress_data
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{
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public:
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Progress_data();
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Progress_data(const Progress_data& to_copy);
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Progress_data& operator=(const Progress_data& to_copy);
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Progress_data operator-(const Progress_data& to_subtract);
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my_boost::atomic_uint64_t m_table_count;
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my_boost::atomic_uint64_t m_row_data;
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my_boost::atomic_uint64_t m_row_count;
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};
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virtual void process_progress_step(Progress_data& change)= 0;
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Progress_data m_total;
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Progress_data m_progress;
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Progress_data m_last_progress;
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private:
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/**
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Throttles progress changes to be reported to progress_changed() about 1 in
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second. It uses 10 stages, each 100ms long, in each there is number of
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iterations to prevent calling boost::chrono::system_clock::now() on each
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function call.
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*/
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void progress_changed();
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static const int STAGES= 10;
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static const int REPORT_DELAY_MS= 1000;
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boost::chrono::system_clock::time_point m_last_stage_time;
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my_boost::atomic_int64_t m_step_countdown;
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my_boost::atomic_int64_t m_stage_countdown;
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int64 m_last_step_countdown;
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};
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}
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}
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}
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#endif
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