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/*
* Copyright (c) 2018 DataDirect Networks. All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "ompi_config.h"
#include "mpi.h"
#include "ompi/mca/fbtl/fbtl.h"
#include "ompi/mca/fbtl/base/base.h"
#include "ompi/mca/fbtl/ime/fbtl_ime.h"
/*
* *******************************************************************
* ************************ actions structure ************************
* *******************************************************************
*/
static mca_fbtl_base_module_1_0_0_t ime = {
mca_fbtl_ime_module_init, /* initialise after being selected */
mca_fbtl_ime_module_finalize, /* close a module on a communicator */
mca_fbtl_ime_preadv, /* blocking read */
mca_fbtl_ime_ipreadv, /* non-blocking read*/
mca_fbtl_ime_pwritev, /* blocking write */
mca_fbtl_ime_ipwritev, /* non-blocking write */
mca_fbtl_ime_progress, /* module specific progress */
mca_fbtl_ime_request_free, /* free module specific data items on the request */
mca_fbtl_base_check_atomicity /* check whether atomicity is supported on this fs */};
/*
* *******************************************************************
* ************************* structure ends **************************
* *******************************************************************
*/
int mca_fbtl_ime_component_init_query(bool enable_progress_threads,
bool enable_mpi_threads)
{
/* Nothing to do */
return OMPI_SUCCESS;
}
struct mca_fbtl_base_module_1_0_0_t *
mca_fbtl_ime_component_file_query (ompio_file_t *fh, int *priority)
{
*priority = mca_fbtl_ime_priority;
/* Do the same as the FS component:
Only return a non-null component if IME
can handle the IO operations. */
if (IME == fh->f_fstype) {
if (*priority < FBTL_IME_INCREASED_PRIORITY) {
*priority = FBTL_IME_INCREASED_PRIORITY;
}
return &ime;
}
return NULL;
}
int mca_fbtl_ime_component_file_unquery (ompio_file_t *file)
{
/* This function might be needed for some purposes later. for now it
* does not have anything to do since there are no steps which need
* to be undone if this module is not selected */
return OMPI_SUCCESS;
}
int mca_fbtl_ime_module_init (ompio_file_t *file)
{
return OMPI_SUCCESS;
}
int mca_fbtl_ime_module_finalize (ompio_file_t *file)
{
return OMPI_SUCCESS;
}
bool mca_fbtl_ime_progress ( mca_ompio_request_t *req)
{
int i=0, lcount=0, ret_code=0;
mca_fbtl_ime_request_data_t *data=(mca_fbtl_ime_request_data_t *)req->req_data;
/* Go through all the requests in the current batch to check
* if they have finished. */
for (i=data->aio_first_active_req; i < data->aio_last_active_req; i++ ) {
if ( data->aio_req_status[i] == FBTL_IME_REQ_CLOSED ) {
lcount++;
}
else if ( data->aio_req_status[i] >= 0 ) {
/* request has finished */
data->aio_open_reqs--;
lcount++;
data->aio_total_len += data->aio_req_status[i];
data->aio_req_status[i] = FBTL_IME_REQ_CLOSED;
}
else if ( data->aio_req_status[i] == FBTL_IME_REQ_ERROR ) {
/* an error occurred. */
data->aio_open_reqs--;
lcount++;
data->aio_req_fail_count++;
data->aio_req_status[i] = FBTL_IME_REQ_CLOSED;
}
else {
/* not yet done */
}
}
/* In case the current batch of requests terminated, exit if an error
* happened for any request.
*/
if ( data->aio_req_fail_count > 0 &&
lcount == data->aio_last_active_req - data->aio_first_active_req ) {
goto error_exit;
}
/* In case some requests are pending, and no error happened in any of the
* previous requests, then the next batch of operations should be prepared.
*/
if ( (lcount == data->aio_req_chunks) && (0 != data->aio_open_reqs) ) {
/* prepare the next batch of operations */
data->aio_first_active_req = data->aio_last_active_req;
if ( (data->aio_req_count-data->aio_last_active_req) > data->aio_req_chunks ) {
data->aio_last_active_req += data->aio_req_chunks;
}
else {
data->aio_last_active_req = data->aio_req_count;
}
/* Send the requests. */
for ( i=data->aio_first_active_req; i< data->aio_last_active_req; i++ ) {
if ( FBTL_IME_READ == data->aio_req_type &&
ime_native_aio_read(&data->aio_reqs[i]) < 0 ) {
opal_output(1, "mca_fbtl_ime_progress: error in aio_read()");
data->aio_req_status[i] = FBTL_IME_REQ_ERROR;
data->aio_last_active_req = i + 1;
break;
}
else if ( FBTL_IME_WRITE == data->aio_req_type &&
ime_native_aio_write(&data->aio_reqs[i]) < 0 ) {
opal_output(1, "mca_fbtl_ime_progress: error in aio_write()");
data->aio_req_status[i] = FBTL_IME_REQ_ERROR;
data->aio_last_active_req = i + 1;
break;
}
}
}
if ( 0 == data->aio_open_reqs ) {
/* all pending operations are finished for this request */
req->req_ompi.req_status.MPI_ERROR = OMPI_SUCCESS;
req->req_ompi.req_status._ucount = data->aio_total_len;
return true;
}
return false;
error_exit:
req->req_ompi.req_status.MPI_ERROR = OMPI_ERROR;
req->req_ompi.req_status._ucount = data->aio_total_len;
return true;
}
void mca_fbtl_ime_request_free ( mca_ompio_request_t *req)
{
/* Free the fbtl specific data structures */
mca_fbtl_ime_request_data_t *data=(mca_fbtl_ime_request_data_t *)req->req_data;
if (NULL != data) {
free (data->allocated_data);
free (data);
req->req_data = NULL;
}
}
void mca_fbtl_ime_complete_cb (struct ime_aiocb *aiocb, int err, ssize_t bytes)
{
ssize_t *req_status = (ssize_t *) aiocb->user_context;
*req_status = err == 0 ? bytes : FBTL_IME_REQ_ERROR;
}
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