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// Copyright 2004 The Trustees of Indiana University.
// Use, modification and distribution is subject to the Boost Software
// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
// Authors: Douglas Gregor
// Andrew Lumsdaine
#ifndef BOOST_PROPERTY_MAP_PARALLEL_PROCESS_GROUP_HPP
#define BOOST_PROPERTY_MAP_PARALLEL_PROCESS_GROUP_HPP
#include <cstdlib>
#include <utility>
namespace boost { namespace parallel {
/**
* A special type used as a flag to a process group constructor that
* indicates that the copy of a process group will represent a new
* distributed data structure.
*/
struct attach_distributed_object { };
/**
* Describes the context in which a trigger is being invoked to
* receive a message.
*/
enum trigger_receive_context {
/// No trigger is active at this time.
trc_none,
/// The trigger is being invoked during synchronization, at the end
/// of a superstep.
trc_in_synchronization,
/// The trigger is being invoked as an "early" receive of a message
/// that was sent through the normal "send" operations to be
/// received by the end of the superstep, but the process group sent
/// the message earlier to clear its buffers.
trc_early_receive,
/// The trigger is being invoked for an out-of-band message, which
/// must be handled immediately.
trc_out_of_band,
/// The trigger is being invoked for an out-of-band message, which
/// must be handled immediately and has alredy been received by
/// an MPI_IRecv call.
trc_irecv_out_of_band
};
// Process group tags
struct process_group_tag {};
struct linear_process_group_tag : virtual process_group_tag {};
struct messaging_process_group_tag : virtual process_group_tag {};
struct immediate_process_group_tag : virtual messaging_process_group_tag {};
struct bsp_process_group_tag : virtual messaging_process_group_tag {};
struct batch_process_group_tag : virtual messaging_process_group_tag {};
struct locking_process_group_tag : virtual process_group_tag {};
struct spawning_process_group_tag : virtual process_group_tag {};
struct process_group_archetype
{
typedef int process_id_type;
};
void wait(process_group_archetype&);
void synchronize(process_group_archetype&);
int process_id(const process_group_archetype&);
int num_processes(const process_group_archetype&);
template<typename T> void send(process_group_archetype&, int, int, const T&);
template<typename T>
process_group_archetype::process_id_type
receive(const process_group_archetype& pg,
process_group_archetype::process_id_type source, int tag, T& value);
template<typename T>
std::pair<process_group_archetype::process_id_type, std::size_t>
receive(const process_group_archetype& pg, int tag, T values[], std::size_t n);
template<typename T>
std::pair<process_group_archetype::process_id_type, std::size_t>
receive(const process_group_archetype& pg,
process_group_archetype::process_id_type source, int tag, T values[],
std::size_t n);
} } // end namespace boost::parallel
namespace boost { namespace graph { namespace distributed {
using boost::parallel::trigger_receive_context;
using boost::parallel::trc_early_receive;
using boost::parallel::trc_out_of_band;
using boost::parallel::trc_irecv_out_of_band;
using boost::parallel::trc_in_synchronization;
using boost::parallel::trc_none;
using boost::parallel::attach_distributed_object;
} } } // end namespace boost::graph::distributed
#endif // BOOST_PROPERTY_MAP_PARALLEL_PROCESS_GROUP_HPP
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