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openmpi/ompi/mca/btl/sm/btl_sm_frag.c
Brian Barrett 27cea44a9c Fix a number of issues with the ompi_ptr_t:
* Make sure that the pval always writes to the correct portion of the
    lval.  This only matters on 32 bit big endian machines.
  * On 32 bit machines when assigning to pval, the other 4 bytes of lval
    weren't being written, which could lead to bogus data

We use macros so that there aren't casts all over the code and the pval
assignment can occur to the correct 4 bytes.  Refs trac:587

This commit was SVN r12974.

The following Trac tickets were found above:
  Ticket 587 --> https://svn.open-mpi.org/trac/ompi/ticket/587
2007-01-03 19:47:48 +00:00

72 строки
2.1 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) 2006 Los Alamos National Security, LLC. All rights
* reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "ompi_config.h"
#include "btl_sm_frag.h"
static inline void mca_btl_sm_frag_constructor(mca_btl_sm_frag_t* frag)
{
OMPI_PTR_SET_PVAL(frag->segment.seg_addr, frag+1);
frag->segment.seg_len = frag->size;
frag->base.des_src = &frag->segment;
frag->base.des_src_cnt = 1;
frag->base.des_dst = &frag->segment;
frag->base.des_dst_cnt = 1;
frag->base.des_flags = 0;
}
static void mca_btl_sm_frag1_constructor(mca_btl_sm_frag_t* frag)
{
frag->size = mca_btl_sm_component.eager_limit;
frag->my_list = &mca_btl_sm_component.sm_frags1;
mca_btl_sm_frag_constructor(frag);
}
static void mca_btl_sm_frag2_constructor(mca_btl_sm_frag_t* frag)
{
frag->size = mca_btl_sm_component.max_frag_size;
frag->my_list = &mca_btl_sm_component.sm_frags2;
mca_btl_sm_frag_constructor(frag);
}
static void mca_btl_sm_frag_destructor(mca_btl_sm_frag_t* frag)
{
}
OBJ_CLASS_INSTANCE(
mca_btl_sm_frag_t,
mca_btl_base_descriptor_t,
mca_btl_sm_frag_constructor,
mca_btl_sm_frag_destructor);
OBJ_CLASS_INSTANCE(
mca_btl_sm_frag1_t,
mca_btl_base_descriptor_t,
mca_btl_sm_frag1_constructor,
mca_btl_sm_frag_destructor);
OBJ_CLASS_INSTANCE(
mca_btl_sm_frag2_t,
mca_btl_base_descriptor_t,
mca_btl_sm_frag2_constructor,
mca_btl_sm_frag_destructor);