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_iwrite = PMPI_File_iwrite
14 #elif defined(HAVE_PRAGMA_HP_SEC_DEF)
15 #pragma _HP_SECONDARY_DEF PMPI_File_iwrite MPI_File_iwrite
16 #elif defined(HAVE_PRAGMA_CRI_DUP)
17 #pragma _CRI duplicate MPI_File_iwrite as PMPI_File_iwrite
18 /* end of weak pragmas */
19 #elif defined(HAVE_WEAK_ATTRIBUTE)
20 int MPI_File_iwrite(MPI_File fh, const void *buf, int count, MPI_Datatype datatype,
21 MPIO_Request *request) __attribute__((weak,alias("PMPI_File_iwrite")));
22 #endif
23
24 /* Include mapping from MPI->PMPI */
25 #define MPIO_BUILD_PROFILING
26 #include "mpioprof.h"
27 #endif
28
29 /*@
30 MPI_File_iwrite - Nonblocking write using individual file pointer
31
32 Input Parameters:
33 . fh - file handle (handle)
34 . buf - initial address of buffer (choice)
35 . count - number of elements in buffer (nonnegative integer)
36 . datatype - datatype of each buffer element (handle)
37
38 Output Parameters:
39 . request - request object (handle)
40
41 .N fortran
42 @*/
43 #ifdef HAVE_MPI_GREQUEST
44 #include "mpiu_greq.h"
45 #endif
46
MPI_File_iwrite(MPI_File fh,ROMIO_CONST void * buf,int count,MPI_Datatype datatype,MPI_Request * request)47 int MPI_File_iwrite(MPI_File fh, ROMIO_CONST void *buf, int count,
48 MPI_Datatype datatype, MPI_Request *request)
49 {
50 int error_code=MPI_SUCCESS;
51 static char myname[] = "MPI_FILE_IWRITE";
52 #ifdef MPI_hpux
53 int fl_xmpi;
54
55 HPMP_IO_START(fl_xmpi, BLKMPIFILEIWRITE, TRDTSYSTEM, fh, datatype,
56 count);
57 #endif /* MPI_hpux */
58
59
60 error_code = MPIOI_File_iwrite(fh, (MPI_Offset) 0, ADIO_INDIVIDUAL,
61 buf, count, datatype, myname, request);
62
63 /* --BEGIN ERROR HANDLING-- */
64 if (error_code != MPI_SUCCESS)
65 error_code = MPIO_Err_return_file(fh, error_code);
66 /* --END ERROR HANDLING-- */
67
68 #ifdef MPI_hpux
69 HPMP_IO_END(fl_xmpi, fh, datatype, count);
70 #endif /* MPI_hpux */
71
72 return error_code;
73 }
74
75 /* prevent multiple definitions of this routine */
76 #ifdef MPIO_BUILD_PROFILING
MPIOI_File_iwrite(MPI_File fh,MPI_Offset offset,int file_ptr_type,const void * buf,int count,MPI_Datatype datatype,char * myname,MPI_Request * request)77 int MPIOI_File_iwrite(MPI_File fh,
78 MPI_Offset offset,
79 int file_ptr_type,
80 const void *buf,
81 int count,
82 MPI_Datatype datatype,
83 char *myname,
84 MPI_Request *request)
85 {
86 int error_code, buftype_is_contig, filetype_is_contig;
87 MPI_Count datatype_size;
88 ADIO_Status status;
89 ADIO_Offset off, bufsize;
90 ADIO_File adio_fh;
91 MPI_Offset nbytes=0;
92
93 MPIU_THREAD_CS_ENTER(ALLFUNC,);
94 adio_fh = MPIO_File_resolve(fh);
95
96 /* --BEGIN ERROR HANDLING-- */
97 MPIO_CHECK_FILE_HANDLE(adio_fh, myname, error_code);
98 MPIO_CHECK_COUNT(adio_fh, count, myname, error_code);
99 MPIO_CHECK_DATATYPE(adio_fh, datatype, myname, error_code);
100
101 if (file_ptr_type == ADIO_EXPLICIT_OFFSET && offset < 0) {
102 error_code = MPIO_Err_create_code(MPI_SUCCESS, MPIR_ERR_RECOVERABLE,
103 myname, __LINE__, MPI_ERR_ARG,
104 "**iobadoffset", 0);
105 error_code = MPIO_Err_return_file(adio_fh, error_code);
106 goto fn_exit;
107 }
108 /* --END ERROR HANDLING-- */
109
110 MPI_Type_size_x(datatype, &datatype_size);
111
112 /* --BEGIN ERROR HANDLING-- */
113 MPIO_CHECK_INTEGRAL_ETYPE(adio_fh, count, datatype_size, myname, error_code);
114 MPIO_CHECK_WRITABLE(adio_fh, myname, error_code);
115 MPIO_CHECK_NOT_SEQUENTIAL_MODE(adio_fh, myname, error_code);
116 MPIO_CHECK_COUNT_SIZE(adio_fh, count, datatype_size, myname, error_code);
117 /* --END ERROR HANDLING-- */
118
119 ADIOI_Datatype_iscontig(datatype, &buftype_is_contig);
120 ADIOI_Datatype_iscontig(adio_fh->filetype, &filetype_is_contig);
121
122 ADIOI_TEST_DEFERRED(adio_fh, myname, &error_code);
123
124 if (buftype_is_contig && filetype_is_contig) {
125 /* convert sizes to bytes */
126 bufsize = datatype_size * count;
127 if (file_ptr_type == ADIO_EXPLICIT_OFFSET) {
128 off = adio_fh->disp + adio_fh->etype_size * offset;
129 }
130 else {
131 off = adio_fh->fp_ind;
132 }
133
134 if (!(adio_fh->atomicity)) {
135 ADIO_IwriteContig(adio_fh, buf, count, datatype, file_ptr_type,
136 off, request, &error_code);
137 }
138 else {
139 /* to maintain strict atomicity semantics with other concurrent
140 operations, lock (exclusive) and call blocking routine */
141 if (ADIO_Feature(adio_fh, ADIO_LOCKS) )
142 {
143 ADIOI_WRITE_LOCK(adio_fh, off, SEEK_SET, bufsize);
144 }
145
146 ADIO_WriteContig(adio_fh, buf, count, datatype, file_ptr_type, off,
147 &status, &error_code);
148
149 if (ADIO_Feature(adio_fh, ADIO_LOCKS) )
150 {
151 ADIOI_UNLOCK(adio_fh, off, SEEK_SET, bufsize);
152 }
153 if (error_code == MPI_SUCCESS) {
154 nbytes = count * datatype_size;
155 }
156
157 MPIO_Completed_request_create(&adio_fh, nbytes, &error_code, request);
158 }
159 }
160 else {
161 ADIO_IwriteStrided(adio_fh, buf, count, datatype, file_ptr_type,
162 offset, request, &error_code);
163 }
164 fn_exit:
165 MPIU_THREAD_CS_EXIT(ALLFUNC,);
166 return error_code;
167 }
168 #endif
169