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BusAccess.h
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00001 //# BusAccess.h: tools for getting access to a dbus object
00002 //# Copyright (C) 2009
00003 //# Associated Universities, Inc. Washington DC, USA.
00004 //#
00005 //# This library is free software; you can redistribute it and/or modify it
00006 //# under the terms of the GNU Library General Public License as published by
00007 //# the Free Software Foundation; either version 2 of the License, or (at your
00008 //# option) any later version.
00009 //#
00010 //# This library is distributed in the hope that it will be useful, but WITHOUT
00011 //# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
00012 //# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
00013 //# License for more details.
00014 //#
00015 //# You should have received a copy of the GNU Library General Public License
00016 //# along with this library; if not, write to the Free Software Foundation,
00017 //# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
00018 //#
00019 //# Correspondence concerning AIPS++ should be addressed as follows:
00020 //#        Internet email: aips2-request@nrao.edu.
00021 //#        Postal address: AIPS++ Project Office
00022 //#                        National Radio Astronomy Observatory
00023 //#                        520 Edgemont Road
00024 //#                        Charlottesville, VA 22903-2475 USA
00025 //#
00026 //# $Id$
00027 
00028 #ifndef DBUS_BUSACCESS_H_
00029 #define DBUS_BUSACCESS_H_
00030 #include <list>
00031 #include <string>
00032 #include <cstdio>
00033 #include <unistd.h>
00034 #include <casa/Exceptions/Error.h>
00035 
00036 namespace casa {
00037     namespace dbus {
00038         std::string adaptor_object( const std::string &name );
00039         std::string object( const std::string &name );
00040         std::string path( const std::string &name );
00041 
00042         char *launch_casa_proxy( bool unique_name, const std::string &dbusname, const std::string &default_name,  const std::list<std::string> &args );
00043 
00044         template<class proxy> proxy *launch( const std::list<std::string> &args=std::list<std::string>( ), bool unique_name=true,
00045                                              const std::string &name="", int trys=60, unsigned long delay=500000 ) {
00046             char *dbname = launch_casa_proxy( unique_name, name, proxy::dbusName( ), proxy::execArgs(args) );
00047             if ( dbname == 0 ) { throw AipsError("launch failed"); }
00048             proxy *result = 0;
00049             int count = trys;
00050             while ( count > 0 ) {
00051                 usleep(delay);
00052                 try {
00053                   result = new proxy(dbname);
00054                   break;
00055                 } catch (...) { }
00056                 --count;
00057             }
00058             delete [] dbname;
00059             return result;
00060         }
00061 
00062     }
00063 }
00064 
00065 #endif