/usr/include/libdap/HTTPCacheInterruptHandler.h is in libdap-dev 3.19.1-2build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 | // -*- 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 <cassert>
#include <iostream>
#include <algorithm>
#include "HTTPCache.h"
#include "EventHandler.h"
#include "debug.h"
namespace libdap
{
static void
unlink_file(const string &f)
{
unlink(f.c_str());
}
/** Handle SIGINT for HTTPCache. When the cache is in use and the process is
sent SIGINT, we must make sure that the cache is left in a consistent
state. This includes removing the lock file, updating the index file and
making sure no partially written data or meta data files exist.
@see EventHandler
@see SignalHandler
@see HTTPCache
@author James Gallagher <jgallagher@opendap.org> */
class HTTPCacheInterruptHandler : public EventHandler
{
private:
public:
///
HTTPCacheInterruptHandler()
{}
///
virtual ~HTTPCacheInterruptHandler()
{}
/** Handle SIGINT. This handler first deletes any files opened but not
added to the cache index files and then calls
HTTPCache::delete_instance().
@param signum We know it is SIGINT; included here as a check and only
when NDEBUG is not defined.
@return Never returns. */
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
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