HTTPCacheInterruptHandler.h

 
// -*- mode: c++; c-basic-offset:4 -*-
 
// This file is part of libdap, A C++ implementation of the OPeNDAP Data
// Access Protocol.
 
// Copyright (c) 2002,2003 OPeNDAP, Inc.
// Author: James Gallagher <jgallagher@opendap.org>
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
//
// You can contact OPeNDAP, Inc. at PO Box 112, Saunderstown, RI. 02874-0112.
 
#ifndef http_cache_interrupt_handler_h
#define http_cache_interrupt_handler_h
 
#include <signal.h>
 
#include <algorithm>
#include <cassert>
#include <iostream>
 
#include "EventHandler.h"
#include "HTTPCache.h"
#include "debug.h"
 
namespace libdap {
 
static void unlink_file(const string &f) { unlink(f.c_str()); }
 
class HTTPCacheInterruptHandler : public EventHandler {
private:
public:
    HTTPCacheInterruptHandler() {}
 
    virtual ~HTTPCacheInterruptHandler() {}
 
    virtual void handle_signal(int signum) {
        assert(signum == SIGINT);
        DBG(cerr << "Inside the HTTPCacheInterruptHandler." << endl);
 
        vector<string> *of = &HTTPCache::_instance->d_open_files;
 
        DBG(copy(of->begin(), of->end(), ostream_iterator<string>(cerr, "\n")));
 
        for_each(of->begin(), of->end(), unlink_file);
 
        HTTPCache::delete_instance();
    }
};
 
} // namespace libdap
 
#endif // http_cache_interrupt_handler_h