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/*
* Copyright (c) 2001-2002 The Trustees of Indiana University.
* All rights reserved.
* Copyright (c) 1998-2001 University of Notre Dame.
* All rights reserved.
* Copyright (c) 1994-1998 The Ohio State University.
* All rights reserved.
*
* This file is part of the LAM/MPI software package. For license
* information, see the LICENSE file in the top level directory of the
* LAM/MPI source distribution.
*
* $HEADER$
*
* $Id: allocmem.c,v 6.7 2002/12/19 18:43:01 jsquyres Exp $
*
* Function: - allocate memory for the RPI
* Accepts: - size to allocate
* - info object
* - pointer to memory to allocate
* Returns: - MPI_SUCCESS or error code
*/
#include <blktype.h>
#include <mpi.h>
#include <mpisys.h>
#include <lam-ssi-rpi.h>
/*@
MPI_Alloc_mem - Allocate memory for use by MPI message passing.
Input Parameters:
. size - number of bytes to allocate
. info - 'MPI_Info' object
Output Parameter:
. baseptr - pointer to address of allocated memory
Notes:
'MPI_INFO_NULL' is always valid for this function. For the TCP, SYSV,
and USYSV RPIs, the 'info' argument is ignored, and this function is
simply a wrapper around 'malloc'.
However, future RPIs (e.g., for Myrinet and VIA-based RPIs) will
provide "special" memory allocation routines that will allocate memory
that can be used directly for DMA.
.N fortran
.N Errors
.N MPI_SUCCESS
.N MPI_ERR_ARG
.N MPI_ERR_NO_MEM
.N ACK
@*/
int MPI_Alloc_mem(MPI_Aint size, MPI_Info info, void *baseptr)
{
lam_initerr();
lam_setfunc(BLKMPIALLOCMEM);
if (size < 0) {
return(lam_errfunc(MPI_COMM_WORLD,
BLKMPIALLOCMEM, lam_mkerr(MPI_ERR_ARG, EINVAL)));
}
if (baseptr == 0) {
return(lam_errfunc(MPI_COMM_WORLD,
BLKMPIALLOCMEM, lam_mkerr(MPI_ERR_ARG, EINVAL)));
}
/* If we're in lamd mode, do a regular malloc. Otherwise, call
the RPI's alloc_mem function. */
if (RPI_ALLOC_MEM(size, info, baseptr) != MPI_SUCCESS)
return(lam_errfunc(MPI_COMM_WORLD,
BLKMPIALLOCMEM, lam_mkerr(MPI_ERR_NO_MEM, ENOMEM)));
lam_resetfunc(BLKMPIALLOCMEM);
return(MPI_SUCCESS);
}
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