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
135 строки
4.9 KiB
C
135 строки
4.9 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 (c) 2006 Los Alamos National Security, LLC. All rights
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* 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_TCP_FRAG_H
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#define MCA_BTL_TCP_FRAG_H
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#define MCA_BTL_TCP_FRAG_ALIGN (8)
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#include "ompi_config.h"
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#ifdef HAVE_SYS_UIO_H
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#include <sys/uio.h>
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#endif
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#include "btl_tcp.h"
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#include "btl_tcp_hdr.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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#define MCA_BTL_TCP_FRAG_IOVEC_NUMBER 4
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/**
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* TCP fragment derived type.
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*/
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struct mca_btl_tcp_frag_t {
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mca_btl_base_descriptor_t base;
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mca_btl_base_segment_t segments[2];
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struct mca_btl_base_endpoint_t *endpoint;
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struct mca_btl_tcp_module_t* btl;
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mca_btl_tcp_hdr_t hdr;
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struct iovec iov[MCA_BTL_TCP_FRAG_IOVEC_NUMBER + 1];
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struct iovec *iov_ptr;
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size_t iov_cnt;
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size_t iov_idx;
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size_t size;
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int rc;
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ompi_free_list_t* my_list;
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};
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typedef struct mca_btl_tcp_frag_t mca_btl_tcp_frag_t;
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OBJ_CLASS_DECLARATION(mca_btl_tcp_frag_t);
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typedef struct mca_btl_tcp_frag_t mca_btl_tcp_frag_eager_t;
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OBJ_CLASS_DECLARATION(mca_btl_tcp_frag_eager_t);
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typedef struct mca_btl_tcp_frag_t mca_btl_tcp_frag_max_t;
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OBJ_CLASS_DECLARATION(mca_btl_tcp_frag_max_t);
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typedef struct mca_btl_tcp_frag_t mca_btl_tcp_frag_user_t;
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OBJ_CLASS_DECLARATION(mca_btl_tcp_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_TCP_FRAG_ALLOC_EAGER(frag, rc) \
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{ \
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\
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ompi_free_list_item_t *item; \
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OMPI_FREE_LIST_WAIT(&mca_btl_tcp_component.tcp_frag_eager, item, rc); \
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frag = (mca_btl_tcp_frag_t*) item; \
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}
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#define MCA_BTL_TCP_FRAG_ALLOC_MAX(frag, rc) \
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{ \
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\
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ompi_free_list_item_t *item; \
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OMPI_FREE_LIST_WAIT(&mca_btl_tcp_component.tcp_frag_max, item, rc); \
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frag = (mca_btl_tcp_frag_t*) item; \
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}
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#define MCA_BTL_TCP_FRAG_ALLOC_USER(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_tcp_component.tcp_frag_user, item, rc); \
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frag = (mca_btl_tcp_frag_t*) item; \
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}
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#define MCA_BTL_TCP_FRAG_RETURN(frag) \
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{ \
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OMPI_FREE_LIST_RETURN(frag->my_list, (ompi_free_list_item_t*)(frag)); \
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}
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#define MCA_BTL_TCP_FRAG_INIT_DST(frag,ep) \
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do { \
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frag->rc = 0; \
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frag->btl = ep->endpoint_btl; \
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frag->endpoint = ep; \
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frag->iov[0].iov_len = sizeof(frag->hdr); \
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frag->iov[0].iov_base = (IOVBASE_TYPE*)&frag->hdr; \
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frag->iov_cnt = 1; \
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frag->iov_idx = 0; \
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frag->iov_ptr = frag->iov; \
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frag->base.des_src = NULL; \
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frag->base.des_dst_cnt = 0; \
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frag->base.des_dst = frag->segments; \
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frag->base.des_dst_cnt = 1; \
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} while(0)
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bool mca_btl_tcp_frag_send(mca_btl_tcp_frag_t*, int sd);
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bool mca_btl_tcp_frag_recv(mca_btl_tcp_frag_t*, int sd);
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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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