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/*
* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2005 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
* University of Stuttgart. All rights reserved.
* Copyright (c) 2004-2005 The Regents of the University of California.
* All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
/**
* @file
*/
#ifndef MCA_PML_OB1_RECVFRAG_H
#define MCA_PML_OB1_RECVFRAG_H
#include "ompi/mca/btl/btl.h"
#include "ompi/mca/bml/bml.h"
#include "pml_ob1_hdr.h"
struct mca_pml_ob1_buffer_t {
ompi_free_list_item_t super;
size_t len;
unsigned char addr[1];
};
typedef struct mca_pml_ob1_buffer_t mca_pml_ob1_buffer_t;
OBJ_CLASS_DECLARATION(mca_pml_ob1_buffer_t);
struct mca_pml_ob1_recv_frag_t {
ompi_free_list_item_t super;
mca_pml_ob1_hdr_t hdr;
struct mca_pml_ob1_recv_request_t* request;
size_t num_segments;
mca_btl_base_module_t* btl;
mca_btl_base_segment_t segments[MCA_BTL_DES_MAX_SEGMENTS];
mca_pml_ob1_buffer_t* buffers[MCA_BTL_DES_MAX_SEGMENTS];
};
typedef struct mca_pml_ob1_recv_frag_t mca_pml_ob1_recv_frag_t;
OBJ_CLASS_DECLARATION(mca_pml_ob1_recv_frag_t);
#define MCA_PML_OB1_RECV_FRAG_ALLOC(frag,rc) \
do { \
ompi_free_list_item_t* item; \
OMPI_FREE_LIST_WAIT(&mca_pml_ob1.recv_frags, item, rc); \
frag = (mca_pml_ob1_recv_frag_t*)item; \
} while(0)
#define MCA_PML_OB1_RECV_FRAG_INIT(frag, hdr, segs, cnt, btl ) \
do { \
size_t i; \
mca_btl_base_segment_t* macro_segments = frag->segments; \
mca_pml_ob1_buffer_t** buffers = frag->buffers; \
\
/* init recv_frag */ \
frag->btl = btl; \
frag->hdr = *(mca_pml_ob1_hdr_t*)hdr; \
frag->num_segments = cnt; \
/* copy over data */ \
for(i=0; i<cnt; i++) { \
ompi_free_list_item_t* item; \
mca_pml_ob1_buffer_t* buff; \
OMPI_FREE_LIST_WAIT(&mca_pml_ob1.buffers, item, rc); \
buff = (mca_pml_ob1_buffer_t*)item; \
buffers[i] = buff; \
macro_segments[i].seg_addr.pval = buff->addr; \
macro_segments[i].seg_len = segs[i].seg_len; \
memcpy(buff->addr, \
segs[i].seg_addr.pval, \
segs[i].seg_len); \
} \
\
} while(0)
#define MCA_PML_OB1_RECV_FRAG_RETURN(frag) \
do { \
size_t i; \
\
/* return buffers */ \
for(i=0; i<frag->num_segments; i++) { \
OMPI_FREE_LIST_RETURN(&mca_pml_ob1.buffers, \
(ompi_free_list_item_t*)frag->buffers[i]); \
} \
frag->num_segments = 0; \
\
/* return recv_frag */ \
OMPI_FREE_LIST_RETURN(&mca_pml_ob1.recv_frags, \
(ompi_free_list_item_t*)frag); \
} while(0)
/**
* Callback from BTL on receipt of a recv_frag.
*/
OMPI_DECLSPEC void mca_pml_ob1_recv_frag_callback(
mca_btl_base_module_t *btl,
mca_btl_base_tag_t tag,
mca_btl_base_descriptor_t* descriptor,
void* cbdata
);
/**
* Match incoming recv_frags against posted receives.
* Supports out of order delivery.
*
* @param frag_header (IN) Header of received recv_frag.
* @param frag_desc (IN) Received recv_frag descriptor.
* @param match_made (OUT) Flag indicating wether a match was made.
* @param additional_matches (OUT) List of additional matches
* @return OMPI_SUCCESS or error status on failure.
*/
OMPI_DECLSPEC int mca_pml_ob1_recv_frag_match(
mca_btl_base_module_t* btl,
mca_pml_ob1_match_hdr_t *hdr,
mca_btl_base_segment_t* segments,
size_t num_segments);
#if defined(c_plusplus) || defined(__cplusplus)
}
#endif
#endif
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