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/*
* Copyright (C) by Argonne National Laboratory
* See COPYRIGHT in top-level directory
*/
#include "ad_xfs.h"
#include "adio_extern.h"
static unsigned xfs_direct_read_chunk_size;
static unsigned xfs_direct_write_chunk_size;
void ADIOI_XFS_SetInfo(ADIO_File fd, MPI_Info users_info, int *error_code)
{
char *value, *c;
int flag;
static char xfs_initialized = 0;
if (fd->info == MPI_INFO_NULL)
MPI_Info_create(&(fd->info));
ADIOI_Info_set(fd->info, "direct_read", "false");
ADIOI_Info_set(fd->info, "direct_write", "false");
fd->direct_read = fd->direct_write = 0;
if (!xfs_initialized) {
xfs_initialized = 1;
c = getenv("MPIO_DIRECT_READ_CHUNK_SIZE");
if (c) {
int io;
io = atoi(c);
if (io <= 0) {
fprintf(stderr,
"MPI: Ignoring an invalid setting for MPIO_DIRECT_READ_CHUNK_SIZE.\n"
" It must be set to a positive integer value.\n");
} else {
xfs_direct_read_chunk_size = io;
}
} else {
xfs_direct_read_chunk_size = 0;
}
c = getenv("MPIO_DIRECT_WRITE_CHUNK_SIZE");
if (c) {
int io;
io = atoi(c);
if (io <= 0) {
fprintf(stderr,
"MPI: Ignoring an invalid setting for MPIO_DIRECT_WRITE_CHUNK_SIZE.\n"
" It must be set to a positive integer value.\n");
} else {
xfs_direct_write_chunk_size = io;
}
} else {
xfs_direct_write_chunk_size = 0;
}
}
if (!fd->hints->initialized) {
fd->hints->fs_hints.xfs.read_chunk_sz = xfs_direct_read_chunk_size;
fd->hints->fs_hints.xfs.write_chunk_sz = xfs_direct_write_chunk_size;
}
/* has user specified values for keys "direct_read" and "direct write"? */
if (users_info != MPI_INFO_NULL) {
value = (char *) ADIOI_Malloc((MPI_MAX_INFO_VAL + 1) * sizeof(char));
ADIOI_Info_get(users_info, "direct_read", MPI_MAX_INFO_VAL, value, &flag);
if (flag && !strcmp(value, "true")) {
ADIOI_Info_set(fd->info, "direct_read", "true");
fd->direct_read = 1;
}
ADIOI_Info_get(users_info, "direct_write", MPI_MAX_INFO_VAL, value, &flag);
if (flag && !strcmp(value, "true")) {
ADIOI_Info_set(fd->info, "direct_write", "true");
fd->direct_write = 1;
}
ADIOI_Free(value);
}
/* set the values for collective I/O and data sieving parameters */
ADIOI_GEN_SetInfo(fd, users_info, error_code);
/* Environment variables override MPI_Info hints */
if (ADIOI_Direct_read)
fd->direct_read = 1;
if (ADIOI_Direct_write)
fd->direct_write = 1;
/* environment variables checked in ADIO_Init */
*error_code = MPI_SUCCESS;
}
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