/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*-
 * vim: ts=8 sts=4 sw=4 noexpandtab
 *
 *   Copyright (C) 2006 University of Chicago.
 *   See COPYRIGHT notice in top-level directory.
 */

#ifndef AD_PVFS2_IO_H_INCLUDED
#define AD_PVFS2_IO_H_INCLUDED

/* Contig I/O helper prototypes */

#define READ 0
#define WRITE 1

/* #define DEBUG_CONTIG */
/* #define DEBUG_LIST */
/* #define DEBUG_DTYPE */

/* Contig I/O helper prototypes */
int ADIOI_PVFS2_Contig(ADIO_File fd, void *buf, int count,
                       MPI_Datatype datatype, int file_ptr_type,
                       ADIO_Offset offset, ADIO_Status * status, int *error_code, int rw_type);

/* List I/O helper prototypes */
int ADIOI_PVFS2_StridedListIO(ADIO_File fd, void *buf, int count,
                              MPI_Datatype datatype, int file_ptr_type,
                              ADIO_Offset offset, ADIO_Status * status,
                              int *error_code, int rw_type);

int gen_listio_arr(ADIOI_Flatlist_node * flat_buf,
                   int *flat_buf_index_p,
                   int64_t * cur_flat_buf_reg_off_p,
                   int flat_buf_size,
                   int flat_buf_extent,
                   ADIOI_Flatlist_node * flat_file,
                   int *flat_file_index_p,
                   int64_t * cur_flat_file_reg_off_p,
                   int flat_file_size,
                   int flat_file_extent,
                   int max_ol_count,
                   ADIO_Offset disp,
                   int bytes_into_filetype,
                   int64_t * bytes_completed,
                   int64_t total_io_size,
                   int64_t buf_off_arr[],
                   int32_t buf_len_arr[],
                   int32_t * buf_ol_count_p,
                   int64_t file_off_arr[], int32_t file_len_arr[], int32_t * file_ol_count_p);

void print_buf_file_ol_pairs(int64_t buf_off_arr[],
                             int32_t buf_len_arr[],
                             int32_t buf_ol_count,
                             int64_t file_off_arr[],
                             int32_t file_len_arr[], int32_t file_ol_count, void *buf, int rw_type);

/* Datatype I/O helper prototypes */
int ADIOI_PVFS2_StridedDtypeIO(ADIO_File fd, void *buf, int count,
                               MPI_Datatype datatype, int file_ptr_type,
                               ADIO_Offset offset, ADIO_Status * status,
                               int *error_code, int rw_type);

int convert_named(MPI_Datatype * mpi_dtype, PVFS_Request * pvfs_dtype, int combiner);

void print_dtype_info(int combiner,
                      int num_int,
                      int num_addr,
                      int num_dtype, int *arr_int, MPI_Aint * arr_addr, MPI_Datatype * arr_dtype);

int convert_mpi_pvfs2_dtype(MPI_Datatype * mpi_dtype, PVFS_Request * pvfs_dtype);

#endif /* AD_PVFS2_IO_H_INCLUDED */
