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.
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* All rights reserved.
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* Copyright (c) 2004-2005 The Trustees of the University of Tennessee.
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* All rights 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_COMM_H
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#define MCA_PML_COMM_H
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#include "opal/threads/mutex.h"
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#include "opal/threads/condition.h"
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#include "mca/ptl/ptl.h"
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#include "opal/class/opal_list.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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OMPI_DECLSPEC extern opal_class_t mca_pml_ptl_comm_t_class;
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/**
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* Cached on ompi_communicator_t to hold queues/state
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* used by the PML<->PTL interface for matching logic.
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*/
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struct mca_pml_comm_t {
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opal_object_t super;
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uint32_t *c_msg_seq; /**< send message sequence number - sender side */
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uint16_t *c_next_msg_seq; /**< send message sequence number - receiver side */
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mca_ptl_sequence_t c_recv_seq; /**< recv request sequence number - receiver side */
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opal_mutex_t c_matching_lock; /**< matching lock */
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opal_list_t *c_unexpected_frags; /**< unexpected fragment queues */
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opal_list_t *c_frags_cant_match; /**< out-of-order fragment queues */
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opal_list_t *c_specific_receives; /**< queues of unmatched specific (source process specified) receives */
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opal_list_t c_wild_receives; /**< queue of unmatched wild (source process not specified) receives */
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};
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typedef struct mca_pml_comm_t mca_pml_ptl_comm_t;
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/**
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* Initialize an instance of mca_pml_ptl_comm_t based on the communicator size.
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*
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* @param comm Instance of mca_pml_ptl_comm_t
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* @param size Size of communicator
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* @return OMPI_SUCCESS or error status on failure.
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*/
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OMPI_DECLSPEC extern int mca_pml_ptl_comm_init_size(mca_pml_ptl_comm_t* comm, size_t size);
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/**
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* Obtain the next sequence number (MPI) for a given destination rank.
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*
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* @param comm Instance of mca_pml_ptl_comm_t
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* @param dst Rank of destination.
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* @return Next available sequence number.
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*/
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static inline mca_ptl_sequence_t mca_pml_ptl_comm_send_sequence(mca_pml_ptl_comm_t* comm, int dst)
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{
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volatile int32_t *msg_seq = (volatile int32_t*)(comm->c_msg_seq+dst);
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return (mca_ptl_sequence_t)OPAL_THREAD_ADD32(msg_seq, 1)-1;
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}
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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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