d984d25da3
include ORTE layer with the RTE framework). Thankfully, nothing used orte_show_help, so easy fix. This commit was SVN r28884.
80 строки
2.4 KiB
C
80 строки
2.4 KiB
C
/*
|
|
* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
|
|
* University Research and Technology
|
|
* Corporation. All rights reserved.
|
|
* Copyright (c) 2004-2005 The University of Tennessee and The University
|
|
* of Tennessee Research Foundation. All rights
|
|
* reserved.
|
|
* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
|
|
* University of Stuttgart. All rights reserved.
|
|
* Copyright (c) 2004-2005 The Regents of the University of California.
|
|
* All rights reserved.
|
|
* Copyright (c) 2013 University of Houston. All rights reserved.
|
|
* $COPYRIGHT$
|
|
*
|
|
* Additional copyrights may follow
|
|
*
|
|
* $HEADER$
|
|
*/
|
|
|
|
|
|
#include "ompi_config.h"
|
|
#include "sharedfp_sm.h"
|
|
|
|
#include "mpi.h"
|
|
#include "ompi/constants.h"
|
|
#include "ompi/mca/sharedfp/sharedfp.h"
|
|
|
|
/*use a semaphore to lock the shared memory*/
|
|
#include <semaphore.h>
|
|
|
|
int mca_sharedfp_sm_request_position(struct mca_sharedfp_base_data_t * sh,
|
|
int bytes_requested,
|
|
OMPI_MPI_OFFSET_TYPE *offset)
|
|
{
|
|
int ret = OMPI_SUCCESS;
|
|
OMPI_MPI_OFFSET_TYPE position = 0;
|
|
OMPI_MPI_OFFSET_TYPE old_offset;
|
|
struct mca_sharedfp_sm_data * sm_data = sh->selected_module_data;
|
|
struct sm_offset * sm_offset_ptr = NULL;
|
|
int rank = ompi_comm_rank ( sh->comm);
|
|
|
|
*offset = 0;
|
|
if ( mca_sharedfp_sm_verbose ) {
|
|
printf("Aquiring lock, rank=%d...",rank);
|
|
}
|
|
|
|
sm_offset_ptr = sm_data->sm_offset_ptr;
|
|
|
|
/* Aquire an exclusive lock */
|
|
sem_wait(&sm_offset_ptr->mutex);
|
|
|
|
if ( mca_sharedfp_sm_verbose ) {
|
|
printf("Succeeded! Acquired sm lock.for rank=%d\n",rank);
|
|
}
|
|
|
|
old_offset=sm_offset_ptr->offset;
|
|
if ( mca_sharedfp_sm_verbose ) {
|
|
printf("Read last_offset=%lld!\n",old_offset);
|
|
}
|
|
|
|
position = old_offset + bytes_requested;
|
|
if ( mca_sharedfp_sm_verbose ) {
|
|
printf("old_offset=%lld, bytes_requested=%d, new offset=%lld!\n",old_offset,bytes_requested,position);
|
|
}
|
|
sm_offset_ptr->offset=position;
|
|
|
|
|
|
if ( mca_sharedfp_sm_verbose ) {
|
|
printf("Releasing sm lock...rank=%d",rank);
|
|
}
|
|
sem_post(&sm_offset_ptr->mutex);
|
|
if ( mca_sharedfp_sm_verbose ) {
|
|
printf("Released lock! released lock.for rank=%d\n",rank);
|
|
}
|
|
|
|
*offset = old_offset;
|
|
|
|
return ret;
|
|
}
|