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
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
|
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright by The HDF Group. *
* All rights reserved. *
* *
* This file is part of HDF5. The full HDF5 copyright notice, including *
* terms governing use, modification, and redistribution, is contained in *
* the files COPYING and Copyright.html. COPYING can be found at the root *
* of the source code distribution tree; Copyright.html can be found at the *
* root level of an installed copy of the electronic HDF5 document set and *
* is linked from the top-level documents page. It can also be found at *
* http://hdfgroup.org/HDF5/doc/Copyright.html. If you do not have *
* access to either file, you may request a copy from help@hdfgroup.org. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*
* writer HDF5 API module of the trecover test program.
*
* Creator: Albert Cheng, Jan 28, 2008.
*/
#include "trecover.h"
#define DATASETNAME "IntArray"
#define CHUNKDATASETNAME "IntArrayChunked"
#define ZDATASETNAME "IntArrayZCompressed"
#define SZDATASETNAME "IntArraySZCompressed"
int
create_files(char *filename, char *ctl_filename)
{
/*
* Create a new file and the control file using H5F_ACC_TRUNC access,
* default file creation properties, and default file
* access properties.
*/
file = H5Fcreate(filename, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
ctl_file = H5Fcreate(ctl_filename, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
}
int
close_file(hid_t fid)
{
H5Fclose(fid);
}
void
writer(hid_t file, int dstype, int rank, hsize_t *dims, hsize_t *dimschunk)
{
hid_t dataset; /* dataset handle */
hid_t datatype, dataspace, plist; /* handles */
herr_t status;
int data[NX][NY]; /* data to write */
int i, j;
/*
* Data and output buffer initialization.
*/
for (i = 0; i < NX; i++) {
for (j = 0; j < NY; j++)
data[i][j] = i*100 + j;
}
/*
* Describe the size of the array and create the data space for fixed
* size dataset.
*/
dataspace = H5Screate_simple(RANK, dims, NULL);
/*
* Define datatype for the data in the file.
* We will store little endian INT numbers.
*/
datatype = H5Tcopy(H5T_NATIVE_INT);
status = H5Tset_order(datatype, H5T_ORDER_LE);
if (dstype & DSContig) {
/* =============================================================
* Create a new dataset within the file using defined dataspace and
* datatype and default dataset creation properties.
* =============================================================
*/
dataset = H5Dcreate(file, DATASETNAME, datatype, dataspace,
H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
/*
* Write the data to the dataset using default transfer properties.
*/
status = H5Dwrite(dataset, H5T_NATIVE_INT, H5S_ALL, H5S_ALL,
H5P_DEFAULT, data);
/*
* Close/release resources.
*/
H5Dclose(dataset);
printf("%s created.\n", DATASETNAME);
}
if (dstype & DSChunked) {
/* =============================================================
* Create a new dataset within the file using defined dataspace and
* datatype and default dataset creation properties.
* =============================================================
*/
plist = H5Pcreate(H5P_DATASET_CREATE);
H5Pset_chunk(plist, RANK, dimschunk);
dataset = H5Dcreate(file, CHUNKDATASETNAME, H5T_NATIVE_INT,
dataspace, H5P_DEFAULT, plist, H5P_DEFAULT);
/*
* Write the data to the dataset using default transfer properties.
*/
status = H5Dwrite(dataset, H5T_NATIVE_INT, H5S_ALL, H5S_ALL,
H5P_DEFAULT, data);
/*
* Close/release resources.
*/
H5Pclose(plist);
H5Dclose(dataset);
printf("%s created.\n", CHUNKDATASETNAME);
}
if (dstype & DSZip){
#ifdef H5_HAVE_FILTER_DEFLATE
/* =============================================================
* Create similar dataset but using Zlib compression.
* Dataset creation property list is modified to use
* GZIP compression with the compression effort set to 6.
* Note that compression can be used only when dataset is chunked.
* =============================================================
*/
plist = H5Pcreate(H5P_DATASET_CREATE);
H5Pset_chunk(plist, RANK, dimschunk);
H5Pset_deflate( plist, 6);
dataset = H5Dcreate(file, ZDATASETNAME, H5T_NATIVE_INT,
dataspace, H5P_DEFAULT, plist, H5P_DEFAULT);
status = H5Dwrite(dataset, H5T_NATIVE_INT, H5S_ALL, H5S_ALL,
H5P_DEFAULT, data);
/*
* Close/release resources.
*/
H5Pclose(plist);
H5Dclose(dataset);
printf("%s created.\n", ZDATASETNAME);
#else
printf("%s is not created because of no GZIP (deflate) support.\n",
ZDATASETNAME);
#endif
}
if (dstype & DSSZip){
#ifdef H5_HAVE_FILTER_SZIP
/* =============================================================
* Create similar dataset but using SZLIB compression.
* Dataset creation property list is modified to use
* SZIP compression with 8 pixels_per_block.
* Note that compression can be used only when dataset is chunked.
* =============================================================
*/
plist = H5Pcreate(H5P_DATASET_CREATE);
H5Pset_chunk(plist, RANK, dimschunk);
H5Pset_szip (plist, H5_SZIP_NN_OPTION_MASK, 8);
dataset = H5Dcreate(file, SZDATASETNAME, H5T_NATIVE_INT,
dataspace, H5P_DEFAULT, plist, H5P_DEFAULT);
status = H5Dwrite(dataset, H5T_NATIVE_INT, H5S_ALL, H5S_ALL,
H5P_DEFAULT, data);
/*
* Close/release resources.
*/
H5Pclose(plist);
H5Dclose(dataset);
printf("%s created.\n", SZDATASETNAME);
#else
printf("%s is not created because of no SZIP encode support.\n",
SZDATASETNAME);
#endif
}
/*
* All done, close/release resources.
*/
H5Sclose(dataspace);
H5Tclose(datatype);
return;
}
|