612570134f
to let the PML (or io, more generally the low level request manager)
to have it's own release function (what was before the req_fini). This
function will only be called from the low level while the req_free will
be called from the upper level (MPI layer) in order to mark the request
as not used by the user anymore.
From the request point of view the requests will be marked as inactive
everytime we read their status (true for persistent as well). As
MPI_REQUEST_NULL is already marked as inactive, the test and wait functions
are simpler. The drawback is that now we have to change in the
ompi_request_{test|wait} the req_status of the request once we get it's
status.
This commit was SVN r9290.
138 строки
5.9 KiB
C
138 строки
5.9 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) 2004-2005 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_OB1_RECVFRAG_H
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#define MCA_PML_OB1_RECVFRAG_H
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#include "ompi/mca/btl/btl.h"
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#include "ompi/mca/bml/bml.h"
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#include "pml_ob1_hdr.h"
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struct mca_pml_ob1_buffer_t {
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opal_list_item_t super;
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size_t len;
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unsigned char addr[1];
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};
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typedef struct mca_pml_ob1_buffer_t mca_pml_ob1_buffer_t;
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OBJ_CLASS_DECLARATION(mca_pml_ob1_buffer_t);
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struct mca_pml_ob1_recv_frag_t {
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opal_list_item_t super;
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mca_pml_ob1_hdr_t hdr;
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struct mca_pml_ob1_recv_request_t* request;
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size_t num_segments;
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mca_btl_base_module_t* btl;
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mca_btl_base_segment_t segments[MCA_BTL_DES_MAX_SEGMENTS];
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mca_pml_ob1_buffer_t* buffers[MCA_BTL_DES_MAX_SEGMENTS];
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};
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typedef struct mca_pml_ob1_recv_frag_t mca_pml_ob1_recv_frag_t;
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OBJ_CLASS_DECLARATION(mca_pml_ob1_recv_frag_t);
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#define MCA_PML_OB1_RECV_FRAG_ALLOC(frag,rc) \
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do { \
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opal_list_item_t* item; \
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OMPI_FREE_LIST_WAIT(&mca_pml_ob1.recv_frags, item, rc); \
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frag = (mca_pml_ob1_recv_frag_t*)item; \
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} while(0)
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#define MCA_PML_OB1_RECV_FRAG_INIT(frag, hdr, segs, cnt, btl ) \
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do { \
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size_t i; \
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mca_btl_base_segment_t* macro_segments = frag->segments; \
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mca_pml_ob1_buffer_t** buffers = frag->buffers; \
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\
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/* init recv_frag */ \
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frag->btl = btl; \
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frag->hdr = *(mca_pml_ob1_hdr_t*)hdr; \
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frag->num_segments = cnt; \
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/* copy over data */ \
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for(i=0; i<cnt; i++) { \
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opal_list_item_t* item; \
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mca_pml_ob1_buffer_t* buff; \
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OMPI_FREE_LIST_WAIT(&mca_pml_ob1.buffers, item, rc); \
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buff = (mca_pml_ob1_buffer_t*)item; \
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buffers[i] = buff; \
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macro_segments[i].seg_addr.pval = buff->addr; \
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macro_segments[i].seg_len = segs[i].seg_len; \
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memcpy(buff->addr, \
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segs[i].seg_addr.pval, \
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segs[i].seg_len); \
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} \
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\
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} while(0)
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#define MCA_PML_OB1_RECV_FRAG_RETURN(frag) \
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do { \
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size_t i; \
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\
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/* return buffers */ \
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for(i=0; i<frag->num_segments; i++) { \
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OMPI_FREE_LIST_RETURN(&mca_pml_ob1.buffers, \
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(opal_list_item_t*)frag->buffers[i]); \
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} \
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frag->num_segments = 0; \
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\
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/* return recv_frag */ \
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OMPI_FREE_LIST_RETURN(&mca_pml_ob1.recv_frags, \
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(opal_list_item_t*)frag); \
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} while(0)
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/**
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* Callback from BTL on receipt of a recv_frag.
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*/
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OMPI_DECLSPEC void mca_pml_ob1_recv_frag_callback(
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mca_btl_base_module_t *btl,
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mca_btl_base_tag_t tag,
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mca_btl_base_descriptor_t* descriptor,
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void* cbdata
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);
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/**
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* Match incoming recv_frags against posted receives.
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* Supports out of order delivery.
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*
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* @param frag_header (IN) Header of received recv_frag.
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* @param frag_desc (IN) Received recv_frag descriptor.
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* @param match_made (OUT) Flag indicating wether a match was made.
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* @param additional_matches (OUT) List of additional matches
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* @return OMPI_SUCCESS or error status on failure.
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*/
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OMPI_DECLSPEC int mca_pml_ob1_recv_frag_match(
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mca_btl_base_module_t* btl,
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mca_pml_ob1_match_hdr_t *hdr,
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mca_btl_base_segment_t* segments,
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size_t num_segments);
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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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