213 строки
6.3 KiB
C
213 строки
6.3 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) 2004-2005 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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/**
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* @file
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*/
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#ifndef MCA_PML_DR_HEADER_H
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#define MCA_PML_DR_HEADER_H
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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_NETINET_IN_H
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#include <netinet/in.h>
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#endif
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#define MCA_PML_DR_HDR_TYPE_MATCH 1
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#define MCA_PML_DR_HDR_TYPE_RNDV 2
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#define MCA_PML_DR_HDR_TYPE_ACK 4
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#define MCA_PML_DR_HDR_TYPE_NACK 5
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#define MCA_PML_DR_HDR_TYPE_FRAG 6
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#define MCA_PML_DR_HDR_TYPE_MAX 10
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#define MCA_PML_DR_HDR_FLAGS_ACK 1 /* is an ack required */
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#define MCA_PML_DR_HDR_FLAGS_NBO 2 /* is the hdr in network byte order */
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#define MCA_PML_DR_HDR_FLAGS_PIN 4 /* is user buffer pinned */
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#define MCA_PML_DR_HDR_FLAGS_CONTIG 8 /* is user buffer contiguous */
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/*
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* Convert a 64 bit value to network byte order.
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*/
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static inline uint64_t hton64(uint64_t val)
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{
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union { uint64_t ll;
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uint32_t l[2];
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} w, r;
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/* platform already in network byte order? */
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if(htonl(1) == 1L)
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return val;
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w.ll = val;
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r.l[0] = htonl(w.l[1]);
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r.l[1] = htonl(w.l[0]);
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return r.ll;
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}
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/*
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* Convert a 64 bit value from network to host byte order.
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*/
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static inline uint64_t ntoh64(uint64_t val)
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{
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union { uint64_t ll;
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uint32_t l[2];
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} w, r;
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/* platform already in network byte order? */
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if(htonl(1) == 1L)
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return val;
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w.ll = val;
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r.l[0] = ntohl(w.l[1]);
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r.l[1] = ntohl(w.l[0]);
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return r.ll;
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}
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/**
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* Common hdr attributes - must be first element in each hdr type
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*/
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struct mca_pml_dr_common_hdr_t {
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uint8_t hdr_type; /**< type of envelope */
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uint8_t hdr_flags; /**< flags indicating how fragment should be processed */
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};
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typedef struct mca_pml_dr_common_hdr_t mca_pml_dr_common_hdr_t;
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#define MCA_PML_DR_COMMON_HDR_NTOH(h)
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#define MCA_PML_DR_COMMON_HDR_HTON(h)
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/**
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* Header definition for the first fragment, contains the
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* attributes required to match the corresponding posted receive.
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*/
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struct mca_pml_dr_match_hdr_t {
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mca_pml_dr_common_hdr_t hdr_common; /**< common attributes */
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uint16_t hdr_ctx; /**< communicator index */
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int32_t hdr_src; /**< source rank */
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int32_t hdr_tag; /**< user tag */
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uint16_t hdr_seq; /**< message sequence number */
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};
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typedef struct mca_pml_dr_match_hdr_t mca_pml_dr_match_hdr_t;
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#define MCA_PML_DR_MATCH_HDR_NTOH(h) \
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do { \
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MCA_PML_DR_COMMON_HDR_NTOH((h).hdr_common); \
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(h).hdr_ctx = ntohs((h).hdr_ctx); \
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(h).hdr_src = ntohl((h).hdr_src); \
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(h).hdr_tag = ntohl((h).hdr_tag); \
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(h).hdr_seq = ntohs((h).hdr_seq); \
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} while (0)
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#define MCA_PML_DR_MATCH_HDR_HTON(h) \
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do { \
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MCA_PML_DR_COMMON_HDR_HTON((h).hdr_common); \
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(h).hdr_ctx = htons((h).hdr_ctx); \
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(h).hdr_src = htonl((h).hdr_src); \
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(h).hdr_tag = htonl((h).hdr_tag); \
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(h).hdr_seq = htons((h).hdr_seq); \
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} while (0)
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/**
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* Header definition for the first fragment when an acknowledgment
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* is required. This could be the first fragment of a large message
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* or a short message that requires an ack (synchronous).
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*/
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struct mca_pml_dr_rendezvous_hdr_t {
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mca_pml_dr_match_hdr_t hdr_match;
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uint64_t hdr_msg_length; /**< message length */
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ompi_ptr_t hdr_src_req; /**< pointer to source request - returned in ack */
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};
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typedef struct mca_pml_dr_rendezvous_hdr_t mca_pml_dr_rendezvous_hdr_t;
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#define MCA_PML_DR_RNDV_HDR_NTOH(h) \
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do { \
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MCA_PML_DR_MATCH_HDR_NTOH((h).hdr_match); \
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(h).hdr_msg_length = ntoh64((h).hdr_msg_length); \
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} while (0)
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#define MCA_PML_DR_RNDV_HDR_HTON(h) \
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do { \
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MCA_PML_DR_MATCH_HDR_HTON((h).hdr_match); \
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(h).hdr_msg_length = hton64((h).hdr_msg_length); \
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} while (0)
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/**
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* Header for subsequent fragments.
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*/
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struct mca_pml_dr_frag_hdr_t {
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mca_pml_dr_common_hdr_t hdr_common; /**< common attributes */
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uint64_t hdr_frag_offset; /**< offset into message */
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ompi_ptr_t hdr_src_req; /**< pointer to source request */
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ompi_ptr_t hdr_dst_req; /**< pointer to matched receive */
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};
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typedef struct mca_pml_dr_frag_hdr_t mca_pml_dr_frag_hdr_t;
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#define MCA_PML_DR_FRAG_HDR_NTOH(h) \
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do { \
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MCA_PML_DR_COMMON_HDR_NTOH((h).hdr_common); \
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(h).hdr_frag_offset = ntoh64((h).hdr_frag_offset); \
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} while (0)
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#define MCA_PML_DR_FRAG_HDR_HTON(h) \
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do { \
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MCA_PML_DR_COMMON_HDR_HTON((h).hdr_common); \
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(h).hdr_frag_offset = hton64((h).hdr_frag_offset); \
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} while (0)
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/**
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* Header used to acknowledgment outstanding fragment(s).
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*/
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struct mca_pml_dr_ack_hdr_t {
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mca_pml_dr_common_hdr_t hdr_common; /**< common attributes */
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ompi_ptr_t hdr_src_req; /**< source request */
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ompi_ptr_t hdr_dst_req; /**< matched receive request */
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};
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typedef struct mca_pml_dr_ack_hdr_t mca_pml_dr_ack_hdr_t;
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#define MCA_PML_DR_ACK_HDR_NTOH(h) \
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do { \
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MCA_PML_DR_COMMON_HDR_NTOH(h.hdr_common); \
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(h).hdr_dst_size = ntoh64((h).hdr_dst_size); \
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} while (0)
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#define MCA_PML_DR_ACK_HDR_HTON(h) \
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do { \
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MCA_PML_DR_COMMON_HDR_HTON((h).hdr_common); \
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(h).hdr_dst_size = hton64((h).hdr_dst_size); \
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} while (0)
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/**
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* Union of defined hdr types.
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*/
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union mca_pml_dr_hdr_t {
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mca_pml_dr_common_hdr_t hdr_common;
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mca_pml_dr_match_hdr_t hdr_match;
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mca_pml_dr_rendezvous_hdr_t hdr_rndv;
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mca_pml_dr_frag_hdr_t hdr_frag;
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mca_pml_dr_ack_hdr_t hdr_ack;
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};
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typedef union mca_pml_dr_hdr_t mca_pml_dr_hdr_t;
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#endif
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