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request_waiters_impl_basic.h

00001 /***************************************************************************
00002  *  include/stxxl/bits/io/basic_waiters_request.h
00003  *
00004  *  Part of the STXXL. See http://stxxl.sourceforge.net
00005  *
00006  *  Copyright (C) 2002 Roman Dementiev <dementiev@mpi-sb.mpg.de>
00007  *  Copyright (C) 2008 Andreas Beckmann <beckmann@cs.uni-frankfurt.de>
00008  *
00009  *  Distributed under the Boost Software License, Version 1.0.
00010  *  (See accompanying file LICENSE_1_0.txt or copy at
00011  *  http://www.boost.org/LICENSE_1_0.txt)
00012  **************************************************************************/
00013 
00014 #ifndef STXXL_REQUEST_WAITERS_IMPL_BASIC_HEADER
00015 #define STXXL_REQUEST_WAITERS_IMPL_BASIC_HEADER
00016 
00017 #include <set>
00018 
00019 #include <stxxl/bits/common/mutex.h>
00020 #include <stxxl/bits/common/switch.h>
00021 #include <stxxl/bits/io/request.h>
00022 
00023 
00024 __STXXL_BEGIN_NAMESPACE
00025 
00028 
00030 class request_waiters_impl_basic : virtual public request_base
00031 {
00032     mutex waiters_mutex;
00033     std::set<onoff_switch *> waiters;
00034 
00035 protected:
00036     bool add_waiter(onoff_switch * sw);
00037     void delete_waiter(onoff_switch * sw);
00038     void notify_waiters();
00039     /*
00040     int nwaiters();             // returns number of waiters
00041     */
00042 };
00043 
00045 
00046 __STXXL_END_NAMESPACE
00047 
00048 #endif // !STXXL_REQUEST_WAITERS_IMPL_BASIC_HEADER

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