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
|
/********************************************************************
*
* Testing thread safety in dataset creation in the HDF5 library
* -------------------------------------------------------------
*
* Set of tests to run multiple threads so that each creates a different
* dataset. This is likely to cause race-conditions if run in a non
* threadsafe environment.
*
* Temporary files generated:
* ttsafe_dcreate.h5
*
* HDF5 APIs exercised in thread:
* H5Screate_simple, H5Tcopy, H5Tset_order, H5Dcreate, H5Dwrite, H5Dclose,
* H5Tclose, H5Sclose.
*
* Created: Apr 28 2000
* Programmer: Chee Wai LEE
*
* Modification History
* --------------------
*
* 19 May 2000, Bill Wendling
* Changed so that it creates its own HDF5 file and removes it at cleanup
* time. Added num_errs flag.
*
********************************************************************/
#include "ttsafe.h"
#ifndef H5_HAVE_THREADSAFE
static int dummy; /* just to create a non-empty object file */
#else
#define FILENAME "ttsafe_dcreate.h5"
#define DATASETNAME_LENGTH 10
#define NUM_THREAD 16
void *tts_dcreate_creator(void *);
typedef struct thread_info {
int id;
hid_t file;
const char *dsetname;
} thread_info;
/*
**********************************************************************
* Thread safe test - multiple dataset creation
**********************************************************************
*/
void tts_dcreate(void)
{
/* Pthread definitions */
pthread_t threads[NUM_THREAD];
/* HDF5 data definitions */
hid_t file, dataset, datatype;
int datavalue, i;
thread_info *thread_out;
const char *dsetname[NUM_THREAD];
pthread_attr_t attribute;
/* set pthread attribute to perform global scheduling */
pthread_attr_init(&attribute);
pthread_attr_setscope(&attribute, PTHREAD_SCOPE_SYSTEM);
/*
* Set individual dataset names (rather than generated the names
* automatically)
*/
for (i = 0; i < NUM_THREAD; i++)
dsetname[i] = malloc(sizeof(char) * DATASETNAME_LENGTH);
dsetname[0] = "zero";
dsetname[1] = "one";
dsetname[2] = "two";
dsetname[3] = "three";
dsetname[4] = "four";
dsetname[5] = "five";
dsetname[6] = "six";
dsetname[7] = "seven";
dsetname[8] = "eight";
dsetname[9] = "nine";
dsetname[10] = "ten";
dsetname[11] = "eleven";
dsetname[12] = "twelve";
dsetname[13] = "thirteen";
dsetname[14] = "fourteen";
dsetname[15] = "fifteen";
/*
* Create a hdf5 file using H5F_ACC_TRUNC access, default file
* creation plist and default file access plist
*/
file = H5Fcreate(FILENAME, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
/* simultaneously create a large number of datasets within the file */
for (i = 0; i < NUM_THREAD; i++) {
thread_out = malloc(sizeof(thread_info));
thread_out->id = i;
thread_out->file = file;
thread_out->dsetname = dsetname[i];
pthread_create(&threads[i], NULL, tts_dcreate_creator, thread_out);
}
for (i = 0;i < NUM_THREAD; i++)
pthread_join(threads[i], NULL);
/* compare data to see if it is written correctly */
/* define datatype for the data using native little endian integers */
datatype = H5Tcopy(H5T_NATIVE_INT);
for (i = 0; i < NUM_THREAD; i++) {
if ((dataset = H5Dopen(file,dsetname[i])) < 0) {
fprintf(stderr, "Dataset name not found - test failed\n");
H5Fclose(file);
num_errs++;
return;
} else {
H5Dread(dataset, datatype, H5S_ALL, H5S_ALL, H5P_DEFAULT, &datavalue);
if (datavalue != i) {
fprintf(stderr,
"Wrong value read %d for dataset name %s - test failed\n",
datavalue, dsetname[i]);
H5Dclose(dataset);
H5Fclose(file);
num_errs++;
return;
}
H5Dclose(dataset);
}
}
/* close remaining resources */
H5Fclose(file);
}
void *tts_dcreate_creator(void *thread_data)
{
hid_t dataspace, datatype, dataset;
hsize_t dimsf[1]; /* dataset dimensions */
struct thread_info {
int id;
hid_t file;
char *dsetname;
} thread_in;
thread_in.dsetname = malloc(sizeof(char) * DATASETNAME_LENGTH);
thread_in = *((struct thread_info *)thread_data);
/* define dataspace for dataset */
dimsf[0] = 1;
dataspace = H5Screate_simple(1,dimsf,NULL);
/* define datatype for the data using native little endian integers */
datatype = H5Tcopy(H5T_NATIVE_INT);
H5Tset_order(datatype, H5T_ORDER_LE);
/* create a new dataset within the file */
dataset = H5Dcreate(thread_in.file, thread_in.dsetname,
datatype, dataspace, H5P_DEFAULT);
/* initialize data for dataset and write value to dataset */
H5Dwrite(dataset, H5T_NATIVE_INT, H5S_ALL, H5S_ALL,
H5P_DEFAULT, &thread_in.id);
/* close dataset, datatype and dataspace resources */
H5Dclose(dataset);
H5Tclose(datatype);
H5Sclose(dataspace);
return NULL;
}
void cleanup_dcreate(void)
{
H5close();
HDunlink(FILENAME);
}
#endif /*H5_HAVE_THREADSAFE*/
|
