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/*
Copyright (C) 2001 Stefan Westerfeld
stefan@space.twc.de
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
#ifndef ARTS_GIOMANAGER_H
#define ARTS_GIOMANAGER_H
#include <glib.h>
#include <iomanager.h>
#include <list>
#include <stack>
#include <map>
#include "arts_export.h"
/*
* BC - Status (2002-03-08): GIOManager
*
* This class will be kept binary compatible (d ptr for extensions).
*/
namespace Arts {
class GIOWatch;
class GIOManagerPrivate;
struct GIOManagerSource;
class GIOTimeWatch;
class GIOManagerBlocking;
/**
* GIOManager performs MCOP I/O inside the Glib event loop. This way, you will
* be able to receive requests and notifications inside Glib application. The
* usual way to set it up is:
*
* <pre>
* GMainLoop *main_loop = g_main_new(FALSE); // as usual
*
* Arts::GIOManager iomanager;
* Arts::Dispatcher dispatcher(&iomanager);
*
* g_main_run(main_loop); // as usual
* </pre>
*/
class ARTS_EXPORT GIOManager : public IOManager {
private:
GIOManagerPrivate *d;
protected:
std::list<GIOWatch *> fdList;
std::list<GIOTimeWatch *> timeList;
int level;
bool _blocking;
bool fileDescriptorsNeedRecheck;
GMainContext *context;
GIOManagerSource *source;
GIOManagerBlocking *gioManagerBlocking;
public:
GIOManager(GMainContext *context = 0);
~GIOManager();
void processOneEvent(bool blocking);
void run();
void terminate();
void watchFD(int fd, int types, IONotify *notify);
void remove(IONotify *notify, int types);
void addTimer(int milliseconds, TimeNotify *notify);
void removeTimer(TimeNotify *notify);
/**
* This controls what GIOManager will do while waiting for the result
* of an MCOP request, the possibilities are:
*
* @li block until the request is completed (true)
* @li open a local event loop (false)
*
* It is much easier to write working and reliable code with blocking
* enabled, so this is the default. If you disable blocking, you have
* to deal with the fact that timers, user interaction and similar
* "unpredictable" things will possibly influence your code in all
* places where you make a remote MCOP call (which is quite often in
* MCOP applications).
*/
void setBlocking(bool blocking);
/* GSource stuff: */
/**
* - internal -
*
* (implements the GSource prepare)
*/
gboolean prepare(gint *timeout);
/**
* - internal -
*
* (implements the GSource check)
*/
gboolean check();
/**
* - internal -
*
* (implements the GSource dispatch)
*/
gboolean dispatch(GSourceFunc callback, gpointer user_data);
};
}
#endif /* ARTS_GIOMANAGER_H */
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