51fc2474f1
to move it into the unexpected queue. Instead pack the data in only one buffer. Now the code look more optimized and clear, but I have a doubt about who's using this functionality. I think that all BTLs always return only one memory segment attached to the matching fragment (i.e. there is no unexpected iov type receive). This commit was SVN r14416.
126 строки
5.6 KiB
C
126 строки
5.6 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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/**
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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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#if defined(c_plusplus) || defined(__cplusplus)
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extern "C" {
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#endif
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struct mca_pml_ob1_buffer_t {
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size_t len;
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void * addr;
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};
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typedef struct mca_pml_ob1_buffer_t mca_pml_ob1_buffer_t;
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struct mca_pml_ob1_recv_frag_t {
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ompi_free_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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unsigned char addr[1];
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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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ompi_free_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, _size; \
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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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unsigned char* _ptr = (unsigned char*)frag->addr; \
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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 = 1; \
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_size = segs[0].seg_len; \
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for( i = 1; i < cnt; i++ ) { \
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_size += segs[i].seg_len; \
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} \
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/* copy over data */ \
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if(_size <= mca_pml_ob1.unexpected_limit ) { \
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macro_segments[0].seg_addr.pval = frag->addr; \
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} else { \
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buffers[0].len = _size; \
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buffers[0].addr = (char*) \
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mca_pml_ob1.allocator->alc_alloc( mca_pml_ob1.allocator, \
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buffers[0].len, \
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0, NULL); \
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_ptr = (unsigned char*)(buffers[0].addr); \
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macro_segments[0].seg_addr.pval = buffers[0].addr; \
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} \
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macro_segments[0].seg_len = _size; \
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for( i = 0; i < cnt; i++ ) { \
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memcpy( _ptr, segs[i].seg_addr.pval, segs[i].seg_len); \
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_ptr += segs[i].seg_len; \
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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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if( frag->segments[0].seg_len > mca_pml_ob1.unexpected_limit ) { \
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/* return buffers */ \
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mca_pml_ob1.allocator->alc_free( mca_pml_ob1.allocator, \
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frag->buffers[0].addr ); \
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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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(ompi_free_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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extern void mca_pml_ob1_recv_frag_callback( 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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#if defined(c_plusplus) || defined(__cplusplus)
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}
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#endif
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#endif
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