1 /* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
2 /*
3 *
4 * Copyright (C) 1997 University of Chicago.
5 * See COPYRIGHT notice in top-level directory.
6 */
7
8 #include "mpioimpl.h"
9
10 #ifdef HAVE_WEAK_SYMBOLS
11
12 #if defined(HAVE_PRAGMA_WEAK)
13 #pragma weak MPI_File_set_atomicity = PMPI_File_set_atomicity
14 #elif defined(HAVE_PRAGMA_HP_SEC_DEF)
15 #pragma _HP_SECONDARY_DEF PMPI_File_set_atomicity MPI_File_set_atomicity
16 #elif defined(HAVE_PRAGMA_CRI_DUP)
17 #pragma _CRI duplicate MPI_File_set_atomicity as PMPI_File_set_atomicity
18 /* end of weak pragmas */
19 #elif defined(HAVE_WEAK_ATTRIBUTE)
20 int MPI_File_set_atomicity(MPI_File fh, int flag) __attribute__((weak,alias("PMPI_File_set_atomicity")));
21 #endif
22
23 /* Include mapping from MPI->PMPI */
24 #define MPIO_BUILD_PROFILING
25 #include "mpioprof.h"
26 #endif
27
28 /*@
29 MPI_File_set_atomicity - Sets the atomicity mode
30
31 Input Parameters:
32 . fh - file handle (handle)
33 . flag - true to set atomic mode, false to set nonatomic mode (logical)
34
35 .N fortran
36 @*/
MPI_File_set_atomicity(MPI_File fh,int flag)37 int MPI_File_set_atomicity(MPI_File fh, int flag)
38 {
39 int error_code, tmp_flag;
40 static char myname[] = "MPI_FILE_SET_ATOMICITY";
41 ADIO_Fcntl_t *fcntl_struct;
42 ADIO_File adio_fh;
43
44 MPIU_THREAD_CS_ENTER(ALLFUNC,);
45
46 adio_fh = MPIO_File_resolve(fh);
47
48 /* --BEGIN ERROR HANDLING-- */
49 MPIO_CHECK_FILE_HANDLE(adio_fh, myname, error_code);
50 /* --END ERROR HANDLING-- */
51
52 ADIOI_TEST_DEFERRED(adio_fh, myname, &error_code);
53
54 if (flag) flag = 1; /* take care of non-one values! */
55
56 /* check if flag is the same on all processes */
57 tmp_flag = flag;
58 MPI_Bcast(&tmp_flag, 1, MPI_INT, 0, adio_fh->comm);
59
60 /* --BEGIN ERROR HANDLING-- */
61 if (tmp_flag != flag) {
62 error_code = MPIO_Err_create_code(MPI_SUCCESS, MPIR_ERR_RECOVERABLE,
63 myname, __LINE__, MPI_ERR_ARG,
64 "**notsame", 0);
65 error_code = MPIO_Err_return_file(adio_fh, error_code);
66 goto fn_exit;
67 }
68 /* --END ERROR HANDLING-- */
69
70 if (adio_fh->atomicity == flag){
71 error_code = MPI_SUCCESS;
72 goto fn_exit;
73 }
74
75
76 fcntl_struct = (ADIO_Fcntl_t *) ADIOI_Malloc(sizeof(ADIO_Fcntl_t));
77 fcntl_struct->atomicity = flag;
78 ADIO_Fcntl(adio_fh, ADIO_FCNTL_SET_ATOMICITY, fcntl_struct, &error_code);
79 /* TODO: what do we do with this error code? */
80
81 /* --BEGIN ERROR HANDLING-- */
82 if (error_code != MPI_SUCCESS)
83 error_code = MPIO_Err_return_file(adio_fh, error_code);
84 /* --END ERROR HANDLING-- */
85
86 ADIOI_Free(fcntl_struct);
87
88 fn_exit:
89 MPIU_THREAD_CS_EXIT(ALLFUNC,);
90 return error_code;
91 }
92