From 130e0a3115cd66e38ec57846e06f69e7fd284400 Mon Sep 17 00:00:00 2001
From: Arno <am@disconnect.de>
Date: Tue, 3 Sep 2013 06:12:33 +0200
Subject: Switch to QRunnable + QThreadPool

Get rid of SmDataCollector and do its job in small, QRunnable tasks and
let QThreadPool manage the treads.

Works well with a local Filesystem. Yet to see how it works over
networked Filesystems.

Ah, before I forget: NEVER, EVER USE QPixmap in THREADS -> Random
crashes! (Yes, I know, it's documented...)
---
 smdirwatcher.h | 93 ++++++++++++++++++++++++++++++++++++----------------------
 1 file changed, 58 insertions(+), 35 deletions(-)

(limited to 'smdirwatcher.h')

diff --git a/smdirwatcher.h b/smdirwatcher.h
index fccc1ed..9ec9181 100644
--- a/smdirwatcher.h
+++ b/smdirwatcher.h
@@ -1,4 +1,4 @@
-    /*
+/*
   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
@@ -16,73 +16,96 @@
 #include <QMutex>
 #include <QSqlDatabase>
 #include <QSqlQuery>
+#include <QThreadPool>
+#include <QRunnable>
 
 class SmTreeItem;
 class QSemaphore;
 class SmDataColletor;
+class AsyncTask;
+class Md5Summer;
 
 class SmDirWatcher : public QThread {
     Q_OBJECT
     public:
-        enum DWEvent { None, Added, Deleted, Modified, Populate };
+        enum DWEvent { None, Added, Deleted, Modified, Populate, CloseWrite };
         explicit SmDirWatcher(int numFields, QObject *parent = 0);
-        SmDataColletor *collector() { return mCollector; }
     
     signals:
         void dwEvent(const QString& file, int event);
+        void setMd5Sum(QString path, QString md5);
+        void setFfmpeg(QString path, QVariantMap data);
+        void setPicSize(QString path, QVariant size);
         void needRefresh();
+        void population(SmTreeItem*);
+        void newData(const QList<QVariant>,int);
     
     public slots:
         void run();
         void stop();
         void setDir(const QString &dir);
+        void startAsyncJobs();
+        void gatherAsync(const QString &path);
 
     private:
+        QList<QVariant> generalData(const QString &path);
         int mFd;
         int mDescr;
         QString mCurrent;
-        SmDataColletor *mCollector;
-        QSemaphore *mSemFree;
-        QSemaphore *mSemUsed;
-        QQueue<QPair<QString, DWEvent> > *mDataQueue;
-        QMutex *mQueueMx;
         char *mINdata;
         int mBufLen;
+        QThreadPool *mAsyncPool;
+        int mNumFields;
+        QList<AsyncTask*> mAsyncTasks;
 };
 
-class SmDataColletor : public QThread {
+class AsyncTask : public QObject, public QRunnable {
     Q_OBJECT
     public:
-        explicit SmDataColletor(const int numFields, QObject *parent = 0);
-        void init(QSemaphore *set, QSemaphore *get, QQueue<QPair<QString, SmDirWatcher::DWEvent> > *data, QMutex *queueMx);
+        explicit AsyncTask(const QString &path = QString());
+        bool skipMe();
 
-    public slots:
-        void setCheckForPresent(bool present);
-        void run();
-        void stop() { mCancel = true; }
+    protected:
+        virtual void run() = 0;
+        bool mSkip;
+        QMutex mStatusMx;
+        const QString mPath;
+};
+
+class Md5Summer : public AsyncTask {
+    Q_OBJECT
+    public:
+        explicit Md5Summer(const QString &path);
 
     signals:
-        void newData(const QList<QVariant>,int);
-        void population(SmTreeItem*);
-        void needRefresh();
-        void totalFiles(int numFiles);
-        void progress();
+        void md5sumDone(QString, QString);
 
-     private:
-        SmTreeItem *populate(const QString &dir);
-        const QList<QVariant> fileData(const QFileInfo &fi);
-        QString mCurrent;
-        QSemaphore *mSemFree;
-        QSemaphore *mSemUsed;
-        QMutex *mQueueMx;
-        QQueue<QPair<QString, SmDirWatcher::DWEvent> > *mDataQueue;
-        int mMode;
-        const int mNumFields;
-        bool mCheckForPresent;
-        bool mCancel;
-        QMutex mCheckForPresentMx;
-        QSqlQuery *mPicPresentQ;
-        QSqlQuery *mMovPresentQ;
+    protected:
+        virtual void run();
+};
+
+class FfmpegGatherer : public AsyncTask {
+    Q_OBJECT
+    public:
+        explicit FfmpegGatherer(const QString &path);
+
+    signals:
+        void ffmpegDone(QString, QVariantMap);
+
+    protected:
+        virtual void run();
+};
+
+class PicSizeGatherer : public AsyncTask {
+    Q_OBJECT
+    public:
+        explicit PicSizeGatherer(const QString &path);
+
+    signals:
+        void picSizeDone(QString, QVariant);
+
+    protected:
+        virtual void run();
 };
 
 #endif // SMDIRWATCHER_H
-- 
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