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/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
/*
* (C) 2013 by Argonne National Laboratory.
* See COPYRIGHT in top-level directory.
*/
#if !defined MCSMUTEX_H_INCLUDED
#define MCSMUTEX_H_INCLUDED
#include <mpi.h>
#define MCS_MUTEX_TAG 100
#ifdef ENABLE_DEBUG
#define debug_print(...) do { printf(__VA_ARGS__); } while (0)
#else
#define debug_print(...)
#endif
struct mcs_mutex_s {
int tail_rank;
MPI_Comm comm;
MPI_Win window;
int *base;
MPI_Info win_info;
};
typedef struct mcs_mutex_s *MCS_Mutex;
#define MCS_MTX_ELEM_DISP 0
#define MCS_MTX_TAIL_DISP 1
int MCS_Mutex_create(int tail_rank, MPI_Comm comm, MCS_Mutex * hdl_out);
int MCS_Mutex_free(MCS_Mutex * hdl_ptr);
int MCS_Mutex_lock(MCS_Mutex hdl);
int MCS_Mutex_trylock(MCS_Mutex hdl, int *success);
int MCS_Mutex_unlock(MCS_Mutex hdl);
#endif /* MCSMUTEX_H_INCLUDED */
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