1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
|
/* -*- 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) 2004-2016 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 Los Alamos National Security, LLC. All rights
* reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
/**
* @file
*/
#ifndef MCA_PML_OB1_COMM_H
#define MCA_PML_OB1_COMM_H
#include "opal/threads/mutex.h"
#include "opal/class/opal_list.h"
#include "ompi/proc/proc.h"
#include "ompi/communicator/communicator.h"
BEGIN_C_DECLS
struct mca_pml_ob1_comm_proc_t {
opal_object_t super;
uint16_t expected_sequence; /**< send message sequence number - receiver side */
struct ompi_proc_t* ompi_proc;
#if OPAL_ENABLE_MULTI_THREADS
volatile int32_t send_sequence; /**< send side sequence number */
#else
int32_t send_sequence; /**< send side sequence number */
#endif
opal_list_t frags_cant_match; /**< out-of-order fragment queues */
opal_list_t specific_receives; /**< queues of unmatched specific receives */
opal_list_t unexpected_frags; /**< unexpected fragment queues */
};
typedef struct mca_pml_ob1_comm_proc_t mca_pml_ob1_comm_proc_t;
OBJ_CLASS_DECLARATION(mca_pml_ob1_comm_proc_t);
/**
* 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 */
opal_list_t wild_receives; /**< queue of unmatched wild (source process not specified) receives */
opal_mutex_t proc_lock;
mca_pml_ob1_comm_proc_t **procs;
size_t num_procs;
size_t last_probed;
};
typedef struct mca_pml_comm_t mca_pml_ob1_comm_t;
OBJ_CLASS_DECLARATION(mca_pml_ob1_comm_t);
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;
if (OPAL_UNLIKELY(NULL == pml_comm->procs[rank])) {
OPAL_THREAD_LOCK(&pml_comm->proc_lock);
if (NULL == pml_comm->procs[rank]) {
mca_pml_ob1_comm_proc_t* proc = OBJ_NEW(mca_pml_ob1_comm_proc_t);
proc->ompi_proc = ompi_comm_peer_lookup (comm, rank);
OBJ_RETAIN(proc->ompi_proc);
opal_atomic_wmb ();
pml_comm->procs[rank] = proc;
}
OPAL_THREAD_UNLOCK(&pml_comm->proc_lock);
}
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
|
