51b2a0fd3f
constrained:
* Make sure we always have a number of eager fragments available
that scales with the number of processes communicating with
a given proc over shared memory
* Use FREE_LIST_GET instead of FREE_LIST_WAIT to return an
error to the PML when resource exhaustion occurs
* Don't dereference the frag during alloc unless we're sure
it's not NULL
Reviewed by: Galen
Refs trac:413
This commit was SVN r12053.
The following Trac tickets were found above:
Ticket 413 --> https://svn.open-mpi.org/trac/ompi/ticket/413
78 строки
2.6 KiB
C
78 строки
2.6 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_BTL_SM_SEND_FRAG_H
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#define MCA_BTL_SM_SEND_FRAG_H
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#include <sys/types.h>
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#include "ompi_config.h"
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#include "ompi/class/ompi_free_list.h"
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#include "btl_sm.h"
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typedef enum {
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MCA_BTL_SM_FRAG_SEND,
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MCA_BTL_SM_FRAG_PUT,
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MCA_BTL_SM_FRAG_GET,
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MCA_BTL_SM_FRAG_ACK
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} mca_btl_sm_frag_type_t;
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/**
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* shared memory send fragment derived type.
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*/
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struct mca_btl_sm_frag_t {
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mca_btl_base_descriptor_t base;
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mca_btl_base_segment_t segment;
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struct mca_btl_base_endpoint_t *endpoint;
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mca_btl_sm_frag_type_t type;
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mca_btl_base_tag_t tag;
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size_t size;
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int rc;
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ompi_free_list_t* my_list;
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};
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typedef struct mca_btl_sm_frag_t mca_btl_sm_frag_t;
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typedef struct mca_btl_sm_frag_t mca_btl_sm_frag1_t;
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typedef struct mca_btl_sm_frag_t mca_btl_sm_frag2_t;
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OBJ_CLASS_DECLARATION(mca_btl_sm_frag_t);
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OBJ_CLASS_DECLARATION(mca_btl_sm_frag1_t);
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OBJ_CLASS_DECLARATION(mca_btl_sm_frag2_t);
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#define MCA_BTL_SM_FRAG_ALLOC1(frag, rc) \
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{ \
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ompi_free_list_item_t* item; \
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OMPI_FREE_LIST_GET(&mca_btl_sm_component.sm_frags1, item, rc); \
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frag = (mca_btl_sm_frag_t*)item; \
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}
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#define MCA_BTL_SM_FRAG_ALLOC2(frag, rc) \
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{ \
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ompi_free_list_item_t* item; \
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OMPI_FREE_LIST_GET(&mca_btl_sm_component.sm_frags2, item, rc); \
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frag = (mca_btl_sm_frag_t*)item; \
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}
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#define MCA_BTL_SM_FRAG_RETURN(frag) \
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{ \
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OMPI_FREE_LIST_RETURN(frag->my_list, (ompi_free_list_item_t*)(frag)); \
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}
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#endif
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