root/ompi/mca/pml/ob1/pml_ob1_rdmafrag.h

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   1 /* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
   2 /*
   3  * Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
   4  *                         University Research and Technology
   5  *                         Corporation.  All rights reserved.
   6  * Copyright (c) 2004-2019 The University of Tennessee and The University
   7  *                         of Tennessee Research Foundation.  All rights
   8  *                         reserved.
   9  * Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
  10  *                         University of Stuttgart.  All rights reserved.
  11  * Copyright (c) 2004-2005 The Regents of the University of California.
  12  *                         All rights reserved.
  13  * Copyright (c) 2014-2015 Los Alamos National Security, LLC. All rights
  14  *                         reserved.
  15  * $COPYRIGHT$
  16  *
  17  * Additional copyrights may follow
  18  *
  19  * $HEADER$
  20  */
  21 /**
  22  *  @file
  23  */
  24 
  25 #ifndef MCA_PML_OB1_RDMAFRAG_H
  26 #define MCA_PML_OB1_RDMAFRAG_H
  27 
  28 #include "pml_ob1_hdr.h"
  29 
  30 BEGIN_C_DECLS
  31 
  32 typedef enum {
  33     MCA_PML_OB1_RDMA_PUT,
  34     MCA_PML_OB1_RDMA_GET
  35 } mca_pml_ob1_rdma_state_t;
  36 
  37 struct mca_pml_ob1_rdma_frag_t;
  38 
  39 typedef void (*mca_pml_ob1_rdma_frag_callback_t)(struct mca_pml_ob1_rdma_frag_t *frag, int64_t rdma_length);
  40 
  41 /**
  42  * Used to keep track of local and remote RDMA operations.
  43  */
  44 struct mca_pml_ob1_rdma_frag_t {
  45     opal_free_list_item_t super;
  46     mca_bml_base_btl_t *rdma_bml;
  47     mca_pml_ob1_hdr_t rdma_hdr;
  48     mca_pml_ob1_rdma_state_t rdma_state;
  49     size_t rdma_length;  /* how much the fragment will transfer */
  50     opal_atomic_size_t rdma_bytes_remaining;  /* how much is left to be transferred */
  51     void *rdma_req;
  52     uint32_t retries;
  53     mca_pml_ob1_rdma_frag_callback_t cbfunc;
  54 
  55     uint64_t rdma_offset;
  56     void *local_address;
  57     mca_btl_base_registration_handle_t *local_handle;
  58 
  59     uint64_t remote_address;
  60     uint8_t remote_handle[MCA_BTL_REG_HANDLE_MAX_SIZE];
  61 };
  62 typedef struct mca_pml_ob1_rdma_frag_t mca_pml_ob1_rdma_frag_t;
  63 
  64 OBJ_CLASS_DECLARATION(mca_pml_ob1_rdma_frag_t);
  65 
  66 
  67 #define MCA_PML_OB1_RDMA_FRAG_ALLOC(frag)                          \
  68     do {                                                           \
  69         frag = (mca_pml_ob1_rdma_frag_t *)                         \
  70             opal_free_list_wait (&mca_pml_ob1.rdma_frags);         \
  71     } while(0)
  72 
  73 #define MCA_PML_OB1_RDMA_FRAG_RETURN(frag)                              \
  74     do {                                                                \
  75         if (frag->local_handle) {                                       \
  76             mca_bml_base_deregister_mem (frag->rdma_bml, frag->local_handle); \
  77             frag->local_handle = NULL;                                  \
  78         }                                                               \
  79         opal_free_list_return (&mca_pml_ob1.rdma_frags,                 \
  80                                (opal_free_list_item_t*)frag);           \
  81     } while (0)
  82 
  83 END_C_DECLS
  84 
  85 #endif
  86 

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