type_free_keyval.c

mpi并行计算的c++代码 可用vc或gcc编译通过 可以用来搭建并行计算试验环境

/* -*- Mode: C; c-basic-offset:4 ; -*- */
/*
 *
 *  (C) 2001 by Argonne National Laboratory.
 *      See COPYRIGHT in top-level directory.
 */

#include "mpiimpl.h"
#include "attr.h"

/* -- Begin Profiling Symbol Block for routine MPI_Type_free_keyval */
#if defined(HAVE_PRAGMA_WEAK)
#pragma weak MPI_Type_free_keyval = PMPI_Type_free_keyval
#elif defined(HAVE_PRAGMA_HP_SEC_DEF)
#pragma _HP_SECONDARY_DEF PMPI_Type_free_keyval  MPI_Type_free_keyval
#elif defined(HAVE_PRAGMA_CRI_DUP)
#pragma _CRI duplicate MPI_Type_free_keyval as PMPI_Type_free_keyval
#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
#define MPI_Type_free_keyval PMPI_Type_free_keyval

#endif

#undef FUNCNAME
#define FUNCNAME MPI_Type_free_keyval

/*@
   MPI_Type_free_keyval - Frees an attribute key for datatypes

Input Parameter:
. keyval - Frees the integer key value (integer) 

.N ThreadSafe

.N Fortran

.N Errors
.N MPI_SUCCESS
.N MPI_ERR_OTHER
.N MPI_ERR_KEYVAL
@*/
int MPI_Type_free_keyval(int *type_keyval)
{
    static const char FCNAME[] = "MPI_Type_free_keyval";
    MPID_Keyval *keyval_ptr = NULL;
    int          in_use;
    int          mpi_errno = MPI_SUCCESS;
    MPID_MPI_STATE_DECL(MPID_STATE_MPI_TYPE_FREE_KEYVAL);

    MPIR_ERRTEST_INITIALIZED_ORDIE();
    
    MPID_CS_ENTER();
    MPID_MPI_FUNC_ENTER(MPID_STATE_MPI_TYPE_FREE_KEYVAL);

    /* Validate parameters, especially handles needing to be converted */
#   ifdef HAVE_ERROR_CHECKING
    {
        MPID_BEGIN_ERROR_CHECKS;
        {
	    MPIR_ERRTEST_ARGNULL(type_keyval, "type_keyval", mpi_errno);
            if (mpi_errno != MPI_SUCCESS) goto fn_fail;
	    MPIR_ERRTEST_KEYVAL(*type_keyval, MPID_DATATYPE, "datatype", mpi_errno);
	    MPIR_ERRTEST_KEYVAL_PERM(*type_keyval, mpi_errno);
            if (mpi_errno != MPI_SUCCESS) goto fn_fail;
        }
        MPID_END_ERROR_CHECKS;
    }
#   endif
    
    /* Convert MPI object handles to object pointers */
    MPID_Keyval_get_ptr( *type_keyval, keyval_ptr );
    
    /* Validate parameters and objects (post conversion) */
#   ifdef HAVE_ERROR_CHECKING
    {
        MPID_BEGIN_ERROR_CHECKS;
        {
	    MPID_Keyval_valid_ptr( keyval_ptr, mpi_errno );
            if (mpi_errno) goto fn_fail;
        }
        MPID_END_ERROR_CHECKS;
    }
#   endif /* HAVE_ERROR_CHECKING */

    /* ... body of routine ...  */
    
    MPIU_Object_release_ref( keyval_ptr, &in_use);
    if (!in_use) {
	MPIU_Handle_obj_free( &MPID_Keyval_mem, keyval_ptr );
    }
    *type_keyval = MPI_KEYVAL_INVALID;

    /* ... end of body of routine ... */

  fn_exit:
    MPID_MPI_FUNC_EXIT(MPID_STATE_MPI_TYPE_FREE_KEYVAL);
    MPID_CS_EXIT();
    return mpi_errno;

  fn_fail:
    /* --BEGIN ERROR HANDLING-- */
#   ifdef HAVE_ERROR_CHECKING
    {
	mpi_errno = MPIR_Err_create_code(
	    mpi_errno, MPIR_ERR_RECOVERABLE, FCNAME, __LINE__, MPI_ERR_OTHER, "**mpi_type_free_keyval", 
	    "**mpi_type_free_keyval %p", type_keyval);
    }
#   endif
    mpi_errno = MPIR_Err_return_comm( NULL, FCNAME, mpi_errno );
    goto fn_exit;
    /* --END ERROR HANDLING-- */
}