This source file includes following definitions.
- MPI_File_preallocate
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8 #include "mpioimpl.h"
9
10 #ifdef HAVE_WEAK_SYMBOLS
11
12 #if defined(HAVE_PRAGMA_WEAK)
13 #pragma weak MPI_File_preallocate = PMPI_File_preallocate
14 #elif defined(HAVE_PRAGMA_HP_SEC_DEF)
15 #pragma _HP_SECONDARY_DEF PMPI_File_preallocate MPI_File_preallocate
16 #elif defined(HAVE_PRAGMA_CRI_DUP)
17 #pragma _CRI duplicate MPI_File_preallocate as PMPI_File_preallocate
18
19 #elif defined(HAVE_WEAK_ATTRIBUTE)
20 int MPI_File_preallocate(MPI_File fh, MPI_Offset size) __attribute__((weak,alias("PMPI_File_preallocate")));
21 #endif
22
23
24 #define MPIO_BUILD_PROFILING
25 #include "mpioprof.h"
26 #endif
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37 int MPI_File_preallocate(MPI_File fh, MPI_Offset size)
38 {
39 ADIO_Fcntl_t *fcntl_struct;
40 int error_code=0, mynod=0;
41 ADIO_File adio_fh;
42 static char myname[] = "MPI_FILE_PREALLOCATE";
43 MPI_Offset tmp_sz, max_sz, min_sz;
44 #ifdef MPI_hpux
45 int fl_xmpi;
46
47 HPMP_IO_START(fl_xmpi, BLKMPIFILEPREALLOCATE, TRDTBLOCK,
48 adio_fh, MPI_DATATYPE_NULL, -1);
49 #endif
50
51 ROMIO_THREAD_CS_ENTER();
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53 adio_fh = MPIO_File_resolve(fh);
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56 MPIO_CHECK_FILE_HANDLE(adio_fh, myname, error_code);
57
58 if (size < 0) {
59 error_code = MPIO_Err_create_code(MPI_SUCCESS, MPIR_ERR_RECOVERABLE,
60 myname, __LINE__, MPI_ERR_ARG,
61 "**iobadsize", 0);
62 error_code = MPIO_Err_return_file(adio_fh, error_code);
63 goto fn_exit;
64 }
65
66 tmp_sz = size;
67 MPI_Allreduce(&tmp_sz, &max_sz, 1, ADIO_OFFSET, MPI_MAX, adio_fh->comm);
68 MPI_Allreduce(&tmp_sz, &min_sz, 1, ADIO_OFFSET, MPI_MIN, adio_fh->comm);
69
70 if (max_sz != min_sz) {
71 error_code = MPIO_Err_create_code(MPI_SUCCESS, MPIR_ERR_RECOVERABLE,
72 myname, __LINE__, MPI_ERR_ARG,
73 "**notsame", 0);
74 error_code = MPIO_Err_return_file(adio_fh, error_code);
75 goto fn_exit;
76 }
77
78
79 if (size == 0) goto fn_exit;
80
81 ADIOI_TEST_DEFERRED(adio_fh, myname, &error_code);
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83 MPI_Comm_rank(adio_fh->comm, &mynod);
84 if (!mynod) {
85 fcntl_struct = (ADIO_Fcntl_t *) ADIOI_Malloc(sizeof(ADIO_Fcntl_t));
86 fcntl_struct->diskspace = size;
87 ADIO_Fcntl(adio_fh, ADIO_FCNTL_SET_DISKSPACE, fcntl_struct, &error_code);
88 ADIOI_Free(fcntl_struct);
89
90 if (error_code != MPI_SUCCESS)
91 error_code = MPIO_Err_return_file(adio_fh, error_code);
92
93 }
94 MPI_Barrier(adio_fh->comm);
95
96 #ifdef MPI_hpux
97 HPMP_IO_END(fl_xmpi, adio_fh, MPI_DATATYPE_NULL, -1);
98 #endif
99
100
101 fn_exit:
102 ROMIO_THREAD_CS_EXIT();
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105 if (!mynod) return error_code;
106 else return MPI_SUCCESS;
107 }