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
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
|
/*
* Copyright (c) 2004-2007 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2020 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2004-2008 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) 2006-2013 Cisco Systems, Inc. All rights reserved.
* Copyright (c) 2015-2018 Research Organization for Information Science
* and Technology (RIST). All rights reserved.
* Copyright (c) 2021 IBM Corporation. All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "ompi_config.h"
#include <stdio.h>
#include "ompi/mpi/c/bindings.h"
#include "ompi/runtime/params.h"
#include "ompi/communicator/communicator.h"
#include "ompi/errhandler/errhandler.h"
#include "ompi/datatype/ompi_datatype.h"
#include "opal/datatype/opal_convertor.h"
#include "ompi/memchecker.h"
#if OMPI_BUILD_MPI_PROFILING
#if OPAL_HAVE_WEAK_SYMBOLS
#pragma weak MPI_Unpack = PMPI_Unpack
#endif
#define MPI_Unpack PMPI_Unpack
#endif
static const char FUNC_NAME[] = "MPI_Unpack";
int MPI_Unpack(const void *inbuf, int insize, int *position,
void *outbuf, int outcount, MPI_Datatype datatype,
MPI_Comm comm)
{
int rc = MPI_SUCCESS;
opal_convertor_t local_convertor;
struct iovec outvec;
unsigned int iov_count;
size_t size;
MEMCHECKER(
memchecker_datatype(datatype);
memchecker_call(&opal_memchecker_base_isdefined, inbuf, insize, MPI_PACKED);
memchecker_call(&opal_memchecker_base_isaddressable, outbuf, outcount, datatype);
memchecker_comm(comm);
);
if (MPI_PARAM_CHECK) {
OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
if (ompi_comm_invalid(comm)) {
return OMPI_ERRHANDLER_NOHANDLE_INVOKE(MPI_ERR_COMM,
FUNC_NAME);
}
if ((NULL == inbuf) || (NULL == position)) { /* outbuf can be MPI_BOTTOM */
return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_ARG, FUNC_NAME);
}
if (outcount < 0) {
return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_COUNT, FUNC_NAME);
}
OMPI_CHECK_DATATYPE_FOR_RECV(rc, datatype, outcount);
OMPI_ERRHANDLER_CHECK(rc, comm, rc, FUNC_NAME);
OMPI_CHECK_USER_BUFFER(rc, outbuf, datatype, outcount);
OMPI_ERRHANDLER_CHECK(rc, comm, rc, FUNC_NAME);
}
/*
* If a datatype's description contains a single element that describes
* a large vector that path is reasonably optimized in pack/unpack. On
* the other hand if the count and datatype combined describe the same
* vector that is processed one element at a time.
*
* So at the top level we morph the call if the count and datatype look
* like a good vector.
*/
ompi_datatype_consolidate_t dtmod;
rc = ompi_datatype_consolidate_create(outcount, datatype, &dtmod,
OMPI_DATATYPE_CONSOLIDATE_THRESHOLD);
OMPI_ERRHANDLER_CHECK(rc, comm, rc, FUNC_NAME);
if( insize > 0 ) {
int ret;
OBJ_CONSTRUCT( &local_convertor, opal_convertor_t );
/* the resulting convertor will be set the the position ZERO */
opal_convertor_copy_and_prepare_for_recv( ompi_mpi_local_convertor,
&(dtmod.dt->super), dtmod.count,
outbuf, 0, &local_convertor );
/* Check for truncation */
opal_convertor_get_packed_size( &local_convertor, &size );
if( (*position + size) > (unsigned int)insize ) {
OBJ_DESTRUCT( &local_convertor );
return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_TRUNCATE, FUNC_NAME);
}
/* Prepare the iovec with all information */
outvec.iov_base = (char*) inbuf + (*position);
outvec.iov_len = size;
/* Do the actual unpacking */
iov_count = 1;
ret = opal_convertor_unpack( &local_convertor, &outvec, &iov_count, &size );
*position += size;
OBJ_DESTRUCT( &local_convertor );
/* All done. Note that the convertor returns 1 upon success, not
OPAL_SUCCESS. */
if (1 != ret) {
rc = OMPI_ERROR;
}
}
rc = ompi_datatype_consolidate_free(&dtmod);
OMPI_ERRHANDLER_RETURN(rc, comm, rc, FUNC_NAME);
}
|
