/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
/*
*
* (C) 2001 by Argonne National Laboratory.
* See COPYRIGHT in top-level directory.
*/
#include "mpiimpl.h"
/* -- Begin Profiling Symbol Block for routine MPI_Pack_size */
#if defined(HAVE_PRAGMA_WEAK)
#pragma weak MPI_Pack_size = PMPI_Pack_size
#elif defined(HAVE_PRAGMA_HP_SEC_DEF)
#pragma _HP_SECONDARY_DEF PMPI_Pack_size MPI_Pack_size
#elif defined(HAVE_PRAGMA_CRI_DUP)
#pragma _CRI duplicate MPI_Pack_size as PMPI_Pack_size
#elif defined(HAVE_WEAK_ATTRIBUTE)
int MPI_Pack_size(int incount, MPI_Datatype datatype, MPI_Comm comm, int *size)
__attribute__ ((weak, alias("PMPI_Pack_size")));
#endif
/* -- End Profiling Symbol Block */
/* Define MPICH_MPI_FROM_PMPI if weak symbols are not supported to build
the MPI routines */
#ifndef MPICH_MPI_FROM_PMPI
#undef MPI_Pack_size
#define MPI_Pack_size PMPI_Pack_size
#undef FUNCNAME
#define FUNCNAME MPIR_Pack_size_impl
#undef FCNAME
#define FCNAME MPL_QUOTE(FUNCNAME)
void MPIR_Pack_size_impl(int incount, MPI_Datatype datatype, MPI_Aint * size)
{
MPI_Aint typesize;
MPIR_Datatype_get_size_macro(datatype, typesize);
*size = incount * typesize;
}
#endif
#undef FUNCNAME
#define FUNCNAME MPI_Pack_size
#undef FCNAME
#define FCNAME MPL_QUOTE(FUNCNAME)
/*@
MPI_Pack_size - Returns the upper bound on the amount of space needed to
pack a message
Input Parameters:
+ incount - count argument to packing call (integer)
. datatype - datatype argument to packing call (handle)
- comm - communicator argument to packing call (handle)
Output Parameters:
. size - upper bound on size of packed message, in bytes (integer)
Notes:
The MPI standard document describes this in terms of 'MPI_Pack', but it
applies to both 'MPI_Pack' and 'MPI_Unpack'. That is, the value 'size' is
the maximum that is needed by either 'MPI_Pack' or 'MPI_Unpack'.
.N ThreadSafe
.N Fortran
.N Errors
.N MPI_SUCCESS
.N MPI_ERR_COMM
.N MPI_ERR_TYPE
.N MPI_ERR_ARG
@*/
int MPI_Pack_size(int incount, MPI_Datatype datatype, MPI_Comm comm, int *size)
{
#ifdef HAVE_ERROR_CHECKING
MPIR_Comm *comm_ptr = NULL;
#endif
int mpi_errno = MPI_SUCCESS;
MPI_Aint size_x = MPI_UNDEFINED;
MPIR_FUNC_TERSE_STATE_DECL(MPID_STATE_MPI_PACK_SIZE);
MPIR_ERRTEST_INITIALIZED_ORDIE();
MPIR_FUNC_TERSE_ENTER(MPID_STATE_MPI_PACK_SIZE);
/* Validate parameters, especially handles needing to be converted */
#ifdef HAVE_ERROR_CHECKING
{
MPID_BEGIN_ERROR_CHECKS;
{
MPIR_ERRTEST_COMM(comm, mpi_errno);
}
MPID_END_ERROR_CHECKS;
}
#endif /* HAVE_ERROR_CHECKING */
#ifdef HAVE_ERROR_CHECKING
{
/* Convert MPI object handles to object pointers */
MPIR_Comm_get_ptr(comm, comm_ptr);
MPID_BEGIN_ERROR_CHECKS;
{
MPIR_Datatype *datatype_ptr = NULL;
MPIR_ERRTEST_COUNT(incount, mpi_errno);
MPIR_ERRTEST_ARGNULL(size, "size", mpi_errno);
MPIR_Comm_valid_ptr(comm_ptr, mpi_errno, FALSE);
if (mpi_errno)
goto fn_fail;
MPIR_ERRTEST_DATATYPE(datatype, "datatype", mpi_errno);
if (HANDLE_GET_KIND(datatype) != HANDLE_KIND_BUILTIN) {
MPIR_Datatype_get_ptr(datatype, datatype_ptr);
MPIR_Datatype_valid_ptr(datatype_ptr, mpi_errno);
MPIR_Datatype_committed_ptr(datatype_ptr, mpi_errno);
if (mpi_errno)
goto fn_fail;
}
}
MPID_END_ERROR_CHECKS;
}
#endif /* HAVE_ERROR_CHECKING */
/* ... body of routine ... */
MPIR_Pack_size_impl(incount, datatype, &size_x);
MPIR_Assign_trunc(*size, size_x, int);
/* ... end of body of routine ... */
#ifdef HAVE_ERROR_CHECKING
fn_exit:
#endif
MPIR_FUNC_TERSE_EXIT(MPID_STATE_MPI_PACK_SIZE);
return mpi_errno;
/* --BEGIN ERROR HANDLING-- */
#ifdef HAVE_ERROR_CHECKING
fn_fail:
{
mpi_errno =
MPIR_Err_create_code(mpi_errno, MPIR_ERR_RECOVERABLE, FCNAME, __LINE__, MPI_ERR_OTHER,
"**mpi_pack_size", "**mpi_pack_size %d %D %C %p", incount,
datatype, comm, size);
}
mpi_errno = MPIR_Err_return_comm(comm_ptr, FCNAME, mpi_errno);
goto fn_exit;
#endif
/* --END ERROR HANDLING-- */
}