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/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
/*
* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2018 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 (c) 2015-2018 Los Alamos National Security, LLC. All rights
* reserved.
* Copyright (c) 2018 Sandia National Laboratories
* All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
/**
* @file
*/
#ifndef MCA_PML_OB1_COMM_H
#define MCA_PML_OB1_COMM_H
#include "opal/mca/threads/mutex.h"
#include "opal/class/opal_list.h"
#include "ompi/proc/proc.h"
#include "ompi/communicator/communicator.h"
/* NTH: at some point we need to untangle the headers. this declaration is needed
* for headers included by the custom match code. */
typedef struct mca_pml_ob1_comm_proc_t mca_pml_ob1_comm_proc_t;
#include "custommatch/pml_ob1_custom_match.h"
BEGIN_C_DECLS
struct mca_pml_ob1_comm_proc_t {
opal_object_t super;
struct ompi_proc_t* ompi_proc;
uint16_t expected_sequence; /**< send message sequence number - receiver side */
int16_t comm_index; /**< index of this communicator on the receiver size (-1 - not set) */
opal_atomic_int32_t send_sequence; /**< send side sequence number */
struct mca_pml_ob1_recv_frag_t* frags_cant_match; /**< out-of-order fragment queues */
#if !MCA_PML_OB1_CUSTOM_MATCH
opal_list_t specific_receives; /**< queues of unmatched specific receives */
opal_list_t unexpected_frags; /**< unexpected fragment queues */
#endif
};
OBJ_CLASS_DECLARATION(mca_pml_ob1_comm_proc_t);
#define MCA_PML_OB1_PROC_REQUIRES_EXT_MATCH(proc) (-1 == (proc)->comm_index)
/**
* Cached on ompi_communicator_t to hold queues/state
* used by the PML<->PTL interface for matching logic.
*/
struct mca_pml_comm_t {
opal_object_t super;
volatile uint32_t recv_sequence; /**< recv request sequence number - receiver side */
opal_mutex_t matching_lock; /**< matching lock */
#if !MCA_PML_OB1_CUSTOM_MATCH
opal_list_t wild_receives; /**< queue of unmatched wild (source process not specified) receives */
#endif
opal_mutex_t proc_lock;
mca_pml_ob1_comm_proc_t * volatile * procs;
size_t num_procs;
size_t last_probed;
#if MCA_PML_OB1_CUSTOM_MATCH
custom_match_prq* prq;
custom_match_umq* umq;
#endif
};
typedef struct mca_pml_comm_t mca_pml_ob1_comm_t;
OBJ_CLASS_DECLARATION(mca_pml_ob1_comm_t);
/**
* @brief Helper function to allocate/fill in ob1 proc for a comm/rank
*/
mca_pml_ob1_comm_proc_t *mca_pml_ob1_peer_create (ompi_communicator_t *comm, mca_pml_ob1_comm_t *pml_comm, int rank);
static inline mca_pml_ob1_comm_proc_t *mca_pml_ob1_peer_lookup (struct ompi_communicator_t *comm, int rank)
{
mca_pml_ob1_comm_t *pml_comm = (mca_pml_ob1_comm_t *)comm->c_pml_comm;
/**
* We have very few ways to validate the correct, and collective, creation of
* the communicator, and ensure all processes have the same cid. The least we
* can do is to check that we are not using a rank that is outside the scope
* of the communicator.
*/
if( OPAL_UNLIKELY(rank >= (int)pml_comm->num_procs) ) {
ompi_rte_abort(-1, "PML OB1 received a message from a rank outside the"
" valid range of the communicator. Please submit a bug request!");
}
if (OPAL_UNLIKELY(NULL == pml_comm->procs[rank])) {
mca_pml_ob1_peer_create (comm, pml_comm, rank);
}
return pml_comm->procs[rank];
}
/**
* Initialize an instance of mca_pml_ob1_comm_t based on the communicator size.
*
* @param comm Instance of mca_pml_ob1_comm_t
* @param size Size of communicator
* @return OMPI_SUCCESS or error status on failure.
*/
extern int mca_pml_ob1_comm_init_size(mca_pml_ob1_comm_t* comm, size_t size);
END_C_DECLS
#endif
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