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
|
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright by the Board of Trustees of the University of Illinois. *
* 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://hdf.ncsa.uiuc.edu/HDF5/doc/Copyright.html. If you do not have *
* access to either file, you may request a copy from hdfhelp@ncsa.uiuc.edu. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/********************************************************************
*
* Testing for thread safety in H5A (dataset attribute) library
* operations. -- Threaded program --
* ------------------------------------------------------------------
*
* Plan: Attempt to break H5Acreate by making many simultaneous create
* calls.
*
* Claim: N calls to H5Acreate should create N attributes for a dataset
* if threadsafe. If some unprotected shared data exists for the
* dataset (eg, a count of the number of attributes in the
* dataset), there is a small chance that consecutive reads occur
* before a write to that shared variable.
*
* HDF5 APIs exercised in thread:
* H5Acreate, H5Awrite, H5Aclose.
*
* Created: Oct 5 1999
* Programmer: Chee Wai LEE
*
* Modification History
* --------------------
*
* 15 May 2000, Chee Wai LEE
* Incorporated into library tests.
*
* 19 May 2000, Bill Wendling
* Changed so that it creates its own HDF5 file and removes it at cleanup
* time.
*
********************************************************************/
#include "ttsafe.h"
#ifdef H5_HAVE_THREADSAFE
#include <stdio.h>
#include <stdlib.h>
#define FILENAME "ttsafe_acreate.h5"
#define DATASETNAME "IntData"
#define NUM_THREADS 16
void *tts_acreate_thread(void *);
typedef struct acreate_data_struct {
hid_t dataset;
hid_t datatype;
hid_t dataspace;
int current_index;
} ttsafe_name_data_t;
void tts_acreate(void)
{
/* Pthread declarations */
pthread_t threads[NUM_THREADS];
/* HDF5 data declarations */
hid_t file, dataset;
hid_t dataspace, datatype;
hid_t attribute;
hsize_t dimsf[1]; /* dataset dimensions */
/* data declarations */
int data; /* data to write */
int buffer, ret, i;
ttsafe_name_data_t *attrib_data;
/*
* Create an 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);
assert(file>=0);
/* create a simple dataspace for the dataset */
dimsf[0] = 1;
dataspace = H5Screate_simple(1, dimsf, NULL);
assert(dataspace>=0);
/* 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(file, DATASETNAME, datatype, dataspace, H5P_DEFAULT);
assert(dataset>=0);
/* initialize data for dataset and write value to dataset */
data = NUM_THREADS;
ret=H5Dwrite(dataset, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, &data);
assert(ret>=0);
/*
* Simultaneously create a large number of attributes to be associated
* with the dataset
*/
for (i = 0; i < NUM_THREADS; i++) {
attrib_data = malloc(sizeof(ttsafe_name_data_t));
attrib_data->dataset = dataset;
attrib_data->datatype = datatype;
attrib_data->dataspace = dataspace;
attrib_data->current_index = i;
ret=pthread_create(&threads[i], NULL, tts_acreate_thread, attrib_data);
assert(ret==0);
}
for (i = 0; i < NUM_THREADS; i++) {
ret=pthread_join(threads[i], NULL);
assert(ret==0);
}
/* verify the correctness of the test */
for (i = 0; i < NUM_THREADS; i++) {
attribute = H5Aopen_name(dataset,gen_name(i));
if (attribute < 0)
TestErrPrintf("unable to open appropriate attribute. Test failed!\n");
else {
ret = H5Aread(attribute, H5T_NATIVE_INT, &buffer);
if (ret < 0 || buffer != i)
TestErrPrintf("wrong data values. Test failed!\n");
H5Aclose(attribute);
}
}
/* close remaining resources */
H5Sclose(dataspace);
H5Tclose(datatype);
H5Dclose(dataset);
H5Fclose(file);
}
void *tts_acreate_thread(void *client_data)
{
hid_t attribute;
char *attribute_name;
int *attribute_data; /* data for attributes */
ttsafe_name_data_t *attrib_data;
attrib_data = (ttsafe_name_data_t *)client_data;
/* Create attribute */
attribute_name = gen_name(attrib_data->current_index);
attribute = H5Acreate(attrib_data->dataset, attribute_name,
attrib_data->datatype, attrib_data->dataspace,
H5P_DEFAULT);
/* Write data to the attribute */
attribute_data = malloc(sizeof(int));
*attribute_data = attrib_data->current_index;
H5Awrite(attribute, H5T_NATIVE_INT, attribute_data);
H5Aclose(attribute);
return NULL;
}
void cleanup_acreate(void)
{
HDunlink(FILENAME);
}
#endif /*H5_HAVE_THREADSAFE*/
|
