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/*
* Copyright (C) by Argonne National Laboratory
* See COPYRIGHT in top-level directory
*/
#include "adio.h"
#include "adio_extern.h"
#include "ad_pvfs2.h"
#include <string.h>
#include "ad_pvfs2_common.h"
#include "mpiu_greq.h"
#include "../../mpi-io/mpioimpl.h"
#define READ 0
#define WRITE 1
static int ADIOI_PVFS2_greq_class = 0;
int ADIOI_PVFS2_aio_free_fn(void *extra_state);
int ADIOI_PVFS2_aio_poll_fn(void *extra_state, MPI_Status * status);
int ADIOI_PVFS2_aio_wait_fn(int count, void **array_of_states, double timeout, MPI_Status * status);
void ADIOI_PVFS2_IReadContig(ADIO_File fd, void *buf, int count,
MPI_Datatype datatype, int file_ptr_type,
ADIO_Offset offset, MPI_Request * request, int *error_code)
{
ADIOI_PVFS2_AIO_contig(fd, buf, count, datatype, file_ptr_type,
offset, request, READ, error_code);
}
void ADIOI_PVFS2_IWriteContig(ADIO_File fd, const void *buf, int count,
MPI_Datatype datatype, int file_ptr_type,
ADIO_Offset offset, MPI_Request * request, int *error_code)
{
ADIOI_PVFS2_AIO_contig(fd, (void *) buf, count, datatype, file_ptr_type,
offset, request, WRITE, error_code);
}
void ADIOI_PVFS2_AIO_contig(ADIO_File fd, void *buf, int count,
MPI_Datatype datatype, int file_ptr_type,
ADIO_Offset offset, MPI_Request * request, int flag, int *error_code)
{
int ret;
MPI_Count datatype_size, len;
ADIOI_PVFS2_fs *pvfs_fs;
ADIOI_AIO_Request *aio_req;
static char myname[] = "ADIOI_PVFS2_AIO_contig";
pvfs_fs = (ADIOI_PVFS2_fs *) fd->fs_ptr;
aio_req = (ADIOI_AIO_Request *) ADIOI_Calloc(sizeof(ADIOI_AIO_Request), 1);
MPI_Type_size_x(datatype, &datatype_size);
len = datatype_size * count;
ret = PVFS_Request_contiguous(len, PVFS_BYTE, &(aio_req->mem_req));
/* --BEGIN ERROR HANDLING-- */
if (ret != 0) {
*error_code = MPIO_Err_create_code(MPI_SUCCESS,
MPIR_ERR_RECOVERABLE,
myname, __LINE__,
ADIOI_PVFS2_error_convert(ret),
"Error in pvfs_request_contig (memory)", 0);
return;
}
/* --END ERROR HANDLING-- */
ret = PVFS_Request_contiguous(len, PVFS_BYTE, &(aio_req->file_req));
/* --BEGIN ERROR HANDLING-- */
if (ret != 0) {
*error_code = MPIO_Err_create_code(MPI_SUCCESS,
MPIR_ERR_RECOVERABLE,
myname, __LINE__,
ADIOI_PVFS2_error_convert(ret),
"Error in pvfs_request_contig (file)", 0);
return;
}
/* --END ERROR HANDLING-- */
if (file_ptr_type == ADIO_INDIVIDUAL) {
/* copy individual file pointer into offset variable, continue */
offset = fd->fp_ind;
}
if (flag == READ) {
#ifdef ADIOI_MPE_LOGGING
MPE_Log_event(ADIOI_MPE_iread_a, 0, NULL);
#endif
ret = PVFS_isys_read(pvfs_fs->object_ref, aio_req->file_req, offset,
buf, aio_req->mem_req, &(pvfs_fs->credentials),
&(aio_req->resp_io), &(aio_req->op_id), NULL);
#ifdef ADIOI_MPE_LOGGING
MPE_Log_event(ADIOI_MPE_iread_b, 0, NULL);
#endif
} else if (flag == WRITE) {
#ifdef ADIOI_MPE_LOGGING
MPE_Log_event(ADIOI_MPE_iwrite_a, 0, NULL);
#endif
ret = PVFS_isys_write(pvfs_fs->object_ref, aio_req->file_req, offset,
buf, aio_req->mem_req, &(pvfs_fs->credentials),
&(aio_req->resp_io), &(aio_req->op_id), NULL);
#ifdef ADIOI_MPE_LOGGING
MPE_Log_event(ADIOI_MPE_iwrite_b, 0, NULL);
#endif
}
/* --BEGIN ERROR HANDLING-- */
if (ret < 0) {
*error_code = MPIO_Err_create_code(MPI_SUCCESS,
MPIR_ERR_RECOVERABLE,
myname, __LINE__,
ADIOI_PVFS2_error_convert(ret),
"Error in PVFS_isys_io", 0);
goto fn_exit;
}
/* --END ERROR HANDLING-- */
/* posted. defered completion */
if (ret == 0) {
if (ADIOI_PVFS2_greq_class == 0) {
MPIX_Grequest_class_create(ADIOI_GEN_aio_query_fn,
ADIOI_PVFS2_aio_free_fn, MPIU_Greq_cancel_fn,
ADIOI_PVFS2_aio_poll_fn, ADIOI_PVFS2_aio_wait_fn,
&ADIOI_PVFS2_greq_class);
}
MPIX_Grequest_class_allocate(ADIOI_PVFS2_greq_class, aio_req, request);
memcpy(&(aio_req->req), request, sizeof(*request));
}
/* immediate completion */
if (ret == 1) {
MPIO_Completed_request_create(&fd, len, error_code, request);
}
if (file_ptr_type == ADIO_INDIVIDUAL) {
fd->fp_ind += len;
}
fd->fp_sys_posn = offset + len;
*error_code = MPI_SUCCESS;
fn_exit:
return;
}
int ADIOI_PVFS2_aio_free_fn(void *extra_state)
{
ADIOI_AIO_Request *aio_req;
aio_req = (ADIOI_AIO_Request *) extra_state;
PVFS_Request_free(&(aio_req->mem_req));
PVFS_Request_free(&(aio_req->file_req));
ADIOI_Free(aio_req);
return MPI_SUCCESS;
}
int ADIOI_PVFS2_aio_poll_fn(void *extra_state, MPI_Status * status)
{
ADIOI_AIO_Request *aio_req;
int ret, error;
aio_req = (ADIOI_AIO_Request *) extra_state;
/* BUG: cannot PVFS_sys_testsome: does not work for a specific request */
ret = PVFS_sys_wait(aio_req->op_id, "ADIOI_PVFS2_aio_poll_fn", &error);
if (ret == 0) {
aio_req->nbytes = aio_req->resp_io.total_completed;
MPI_Grequest_complete(aio_req->req);
return MPI_SUCCESS;
} else
return MPI_UNDEFINED; /* TODO: what's this error? */
}
/* wait for multiple requests to complete */
int ADIOI_PVFS2_aio_wait_fn(int count, void **array_of_states, double timeout, MPI_Status * status)
{
ADIOI_AIO_Request **aio_reqlist;
PVFS_sys_op_id *op_id_array;
int i, j, greq_count, completed_count = 0;
int *error_array;
aio_reqlist = (ADIOI_AIO_Request **) array_of_states;
op_id_array = (PVFS_sys_op_id *) ADIOI_Calloc(count, sizeof(PVFS_sys_op_id));
error_array = (int *) ADIOI_Calloc(count, sizeof(int));
greq_count = count;
/* PVFS-2.6: testsome actually tests all requests and fills in op_id_array
* with the ones that have completed. count is an in/out parameter.
* returns with the number of completed operations. what a mess! */
while (completed_count < greq_count) {
count = greq_count;
PVFS_sys_testsome(op_id_array, &count, NULL, error_array, INT_MAX);
completed_count += count;
for (i = 0; i < count; i++) {
for (j = 0; j < greq_count; j++) {
if (op_id_array[i] == aio_reqlist[j]->op_id) {
aio_reqlist[j]->nbytes = aio_reqlist[j]->resp_io.total_completed;
MPI_Grequest_complete(aio_reqlist[j]->req);
}
}
}
}
return MPI_SUCCESS; /* TODO: no idea how to deal with errors */
}
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