ad_testfs_fcntl.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 ; -*- */
/* 
 *
 *   Copyright (C) 2001 University of Chicago. 
 *   See COPYRIGHT notice in top-level directory.
 */

#include "ad_testfs.h"
#include "adioi.h"
#include "adio_extern.h"

void ADIOI_TESTFS_Fcntl(ADIO_File fd, int flag, ADIO_Fcntl_t *fcntl_struct, 
			int *error_code)
{
    int myrank, nprocs;
    static char myname[] = "ADIOI_TESTFS_FCNTL";

    *error_code = MPI_SUCCESS;

    MPI_Comm_size(fd->comm, &nprocs);
    MPI_Comm_rank(fd->comm, &myrank);
    FPRINTF(stdout, "[%d/%d] ADIOI_TESTFS_Fcntl called on %s\n", 
	    myrank, nprocs, fd->filename);

    switch(flag) {
    case ADIO_FCNTL_GET_FSIZE:
	fcntl_struct->fsize = 0;
	*error_code = MPI_SUCCESS;
	break;

    case ADIO_FCNTL_SET_DISKSPACE:
	*error_code = MPI_SUCCESS;
	break;

    case ADIO_FCNTL_SET_ATOMICITY:
	fd->atomicity = (fcntl_struct->atomicity == 0) ? 0 : 1;
	*error_code = MPI_SUCCESS;
	break;

    default:
	/* --BEGIN ERROR HANDLING-- */
	*error_code = MPIO_Err_create_code(MPI_SUCCESS, MPIR_ERR_RECOVERABLE,
					   myname, __LINE__, 
					   MPI_ERR_ARG,
					   "**flag", "**flag %d", flag);
	return;
	/* --END ERROR HANDLING-- */
    }
}