1 /*
2 * Copyright (c) 2004-2007 The Trustees of Indiana University and Indiana
3 * University Research and Technology
4 * Corporation. All rights reserved.
5 * Copyright (c) 2004-2005 The University of Tennessee and The University
6 * of Tennessee Research Foundation. All rights
7 * reserved.
8 * Copyright (c) 2004-2008 High Performance Computing Center Stuttgart,
9 * University of Stuttgart. All rights reserved.
10 * Copyright (c) 2004-2005 The Regents of the University of California.
11 * All rights reserved.
12 * Copyright (c) 2008 Sun Microsystems, Inc. All rights reserved.
13 * Copyright (c) 2015 Research Organization for Information Science
14 * and Technology (RIST). All rights reserved.
15 * $COPYRIGHT$
16 *
17 * Additional copyrights may follow
18 *
19 * $HEADER$
20 */
21
22 #include "ompi_config.h"
23
24 #include "ompi/mpi/c/bindings.h"
25 #include "ompi/runtime/params.h"
26 #include "ompi/errhandler/errhandler.h"
27 #include "ompi/file/file.h"
28 #include "ompi/datatype/ompi_datatype.h"
29 #include "ompi/memchecker.h"
30
31 #if OMPI_BUILD_MPI_PROFILING
32 #if OPAL_HAVE_WEAK_SYMBOLS
33 #pragma weak MPI_File_read_shared = PMPI_File_read_shared
34 #endif
35 #define MPI_File_read_shared PMPI_File_read_shared
36 #endif
37
38 static const char FUNC_NAME[] = "MPI_File_read_shared";
39
40
MPI_File_read_shared(MPI_File fh,void * buf,int count,MPI_Datatype datatype,MPI_Status * status)41 int MPI_File_read_shared(MPI_File fh, void *buf, int count,
42 MPI_Datatype datatype, MPI_Status *status)
43 {
44 int rc;
45
46 MEMCHECKER(
47 memchecker_datatype(datatype);
48 );
49
50 if (MPI_PARAM_CHECK) {
51 rc = MPI_SUCCESS;
52 OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
53 if (ompi_file_invalid(fh)) {
54 fh = MPI_FILE_NULL;
55 rc = MPI_ERR_FILE;
56 } else if (count < 0) {
57 rc = MPI_ERR_COUNT;
58 } else {
59 OMPI_CHECK_DATATYPE_FOR_RECV(rc, datatype, count);
60 }
61 OMPI_ERRHANDLER_CHECK(rc, fh, rc, FUNC_NAME);
62 }
63
64 OPAL_CR_ENTER_LIBRARY();
65
66 /* Call the back-end io component function */
67
68 switch (fh->f_io_version) {
69 case MCA_IO_BASE_V_2_0_0:
70 rc = fh->f_io_selected_module.v2_0_0.
71 io_module_file_read_shared(fh, buf, count, datatype, status);
72 break;
73
74 default:
75 rc = MPI_ERR_INTERN;
76 break;
77 }
78
79 /* All done */
80
81 OMPI_ERRHANDLER_RETURN(rc, fh, rc, FUNC_NAME);
82 }
83