HTTPCacheInterruptHandler.h

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00001 
00002 // -*- mode: c++; c-basic-offset:4 -*-
00003 
00004 // This file is part of libdap, A C++ implementation of the OPeNDAP Data
00005 // Access Protocol.
00006 
00007 // Copyright (c) 2002,2003 OPeNDAP, Inc.
00008 // Author: James Gallagher <jgallagher@opendap.org>
00009 //
00010 // This library is free software; you can redistribute it and/or
00011 // modify it under the terms of the GNU Lesser General Public
00012 // License as published by the Free Software Foundation; either
00013 // version 2.1 of the License, or (at your option) any later version.
00014 //
00015 // This library is distributed in the hope that it will be useful,
00016 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00017 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00018 // Lesser General Public License for more details.
00019 //
00020 // You should have received a copy of the GNU Lesser General Public
00021 // License along with this library; if not, write to the Free Software
00022 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00023 //
00024 // You can contact OPeNDAP, Inc. at PO Box 112, Saunderstown, RI. 02874-0112.
00025 
00026 #ifndef http_cache_interrupt_handler_h
00027 #define http_cache_interrupt_handler_h
00028 
00029 #include <assert.h>
00030 #include <signal.h>
00031 
00032 #include <iostream>
00033 #include <algorithm>
00034 
00035 #include "HTTPCache.h"
00036 #include "EventHandler.h"
00037 #include "debug.h"
00038 
00039 static void
00040 unlink_file(const string &f)
00041 {
00042     unlink(f.c_str());
00043 }
00044 
00054 class HTTPCacheInterruptHandler : public EventHandler
00055 {
00056 private:
00057 
00058 public:
00060     HTTPCacheInterruptHandler()
00061     {}
00062 
00064     virtual ~HTTPCacheInterruptHandler()
00065     {}
00066 
00074     virtual void handle_signal(int signum)
00075     {
00076         assert(signum == SIGINT);
00077         DBG(cerr << "Inside the HTTPCacheInterruptHandler." << endl);
00078 
00079         vector<string> *of = &HTTPCache::_instance->d_open_files;
00080 
00081         DBG(copy(of->begin(), of->end(),
00082                  ostream_iterator<string>(cerr, "\n")));
00083 
00084         for_each(of->begin(), of->end(), unlink_file);
00085 
00086         HTTPCache::delete_instance();
00087     }
00088 };
00089 
00090 #endif // http_cache_interrupt_handler_h

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