27cea44a9c
* 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
93 строки
3.4 KiB
C
93 строки
3.4 KiB
C
/*
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* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
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* University Research and Technology
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* Corporation. All rights reserved.
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* Copyright (c) 2004-2006 The University of Tennessee and The University
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* of Tennessee Research Foundation. All rights
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* reserved.
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* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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* University of Stuttgart. All rights reserved.
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* Copyright (c) 2004-2005 The Regents of the University of California.
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* All rights reserved.
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* $COPYRIGHT$
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*
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* Additional copyrights may follow
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*
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* $HEADER$
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*/
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#ifndef MCA_BTL_MX_FRAG_H
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#define MCA_BTL_MX_FRAG_H
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#define MCA_BTL_MX_FRAG_ALIGN (8)
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#include "ompi_config.h"
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#include "opal/class/opal_list.h"
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#include "ompi/class/ompi_free_list.h"
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#include "btl_mx.h"
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#if defined(c_plusplus) || defined(__cplusplus)
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extern "C" {
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#endif
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/**
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* MX send framxent derived type.
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*/
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struct mca_btl_mx_frag_t {
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mca_btl_base_descriptor_t base;
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mca_btl_base_segment_t segment[2];
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struct mca_btl_base_endpoint_t* endpoint;
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mca_btl_base_tag_t tag;
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mx_request_t mx_request;
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size_t size;
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ompi_free_list_t* mx_frag_list;
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};
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typedef struct mca_btl_mx_frag_t mca_btl_mx_frag_t;
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OBJ_CLASS_DECLARATION(mca_btl_mx_frag_t);
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typedef struct mca_btl_mx_frag_t mca_btl_mx_frag_eager_t;
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OBJ_CLASS_DECLARATION(mca_btl_mx_frag_eager_t);
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typedef struct mca_btl_mx_frag_t mca_btl_mx_frag_max_t;
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OBJ_CLASS_DECLARATION(mca_btl_mx_frag_max_t);
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typedef struct mca_btl_mx_frag_t mca_btl_mx_frag_user_t;
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OBJ_CLASS_DECLARATION(mca_btl_mx_frag_user_t);
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/*
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* Macros to allocate/return descriptors from module specific
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* free list(s).
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*/
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#define MCA_BTL_MX_FRAG_ALLOC_EAGER(btl, frag, rc) \
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{ \
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ompi_free_list_item_t *item; \
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OMPI_FREE_LIST_WAIT( &mca_btl_mx_component.mx_send_eager_frags, item, rc); \
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frag = (mca_btl_mx_frag_t*) item; \
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frag->mx_frag_list = &(mca_btl_mx_component.mx_send_eager_frags); \
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OMPI_PTR_SET_PVAL(frag->segment[0].seg_addr, (void*)(frag+1)); \
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}
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#define MCA_BTL_MX_FRAG_ALLOC_USER(btl, frag, rc) \
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{ \
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ompi_free_list_item_t *item; \
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OMPI_FREE_LIST_WAIT( &mca_btl_mx_component.mx_send_user_frags, item, rc); \
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frag = (mca_btl_mx_frag_t*) item; \
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frag->mx_frag_list = &(mca_btl_mx_component.mx_send_user_frags); \
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}
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#define MCA_BTL_MX_FRAG_RETURN(btl, frag) \
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{ \
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/*opal_output( 0, "return item to %p\n", frag->mx_frag_list );*/ \
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OMPI_FREE_LIST_RETURN( frag->mx_frag_list, (ompi_free_list_item_t*)(frag)); \
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}
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#if defined(c_plusplus) || defined(__cplusplus)
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}
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#endif
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#endif
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