Mercurial > hg > svcore
view data/fileio/FileReadThread.h @ 1833:21c792334c2e sensible-delimited-data-strings
Rewrite all the DelimitedDataString stuff so as to return vectors of individual cell strings rather than having the classes add the delimiters themselves. Rename accordingly to names based on StringExport. Take advantage of this in the CSV writer code so as to properly quote cells that contain delimiter characters.
author | Chris Cannam |
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date | Fri, 03 Apr 2020 17:11:05 +0100 |
parents | ad5f892c0c4d |
children |
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/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */ /* Sonic Visualiser An audio file viewer and annotation editor. Centre for Digital Music, Queen Mary, University of London. This file copyright 2006 Chris Cannam. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. See the file COPYING included with this distribution for more information. */ #ifndef SV_FILE_READ_THREAD_H #define SV_FILE_READ_THREAD_H #include "base/Thread.h" #include <QMutex> #include <QWaitCondition> #include <map> #include <set> #include <stdint.h> class FileReadThread : public Thread { Q_OBJECT public: FileReadThread(); void run() override; virtual void finish(); struct Request { int fd; QMutex *mutex; // used to synchronise access to fd; may be null off_t start; size_t size; char *data; // caller is responsible for allocating and deallocating bool successful; // set by FileReadThread after processing request }; virtual int request(const Request &request); virtual void cancel(int token); virtual bool isReady(int token); virtual bool isCancelled(int token); // and safe to delete virtual bool haveRequest(int token); virtual bool getRequest(int token, Request &request); virtual void done(int token); protected: int m_nextToken; bool m_exiting; typedef std::map<int, Request> RequestQueue; RequestQueue m_queue; RequestQueue m_cancelledRequests; RequestQueue m_readyRequests; std::set<int> m_newlyCancelled; QMutex m_mutex; QWaitCondition m_condition; void process(); void notifyCancelled(); }; #endif