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
|
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright by The HDF Group. *
* 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 COPYING file, which can be found at the root of the source code *
* distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases. *
* If you do not have access to either file, you may request a copy from *
* help@hdfgroup.org. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*-------------------------------------------------------------------------
*
* Created: swmr_common.c
*
* Purpose: Utility functions for the SWMR test code.
*
*-------------------------------------------------------------------------
*/
/***********/
/* Headers */
/***********/
#include <err.h> /* for err(3) */
#include "h5test.h"
#include "vfd_swmr_common.h"
static const hid_t badhid = H5I_INVALID_HID;
int verbosity = 2;
void
dbgf(int level, const char *fmt, ...)
{
va_list ap;
if (verbosity < level)
return;
va_start(ap, fmt);
(void)vfprintf(stderr, fmt, ap);
va_end(ap);
}
estack_state_t
disable_estack(void)
{
estack_state_t es;
(void)H5Eget_auto(H5E_DEFAULT, &es.efunc, &es.edata);
(void)H5Eset_auto(H5E_DEFAULT, NULL, NULL);
return es;
}
void
restore_estack(estack_state_t es)
{
(void)H5Eset_auto(H5E_DEFAULT, es.efunc, es.edata);
}
void
block_signals(sigset_t *oldset)
{
sigset_t fullset;
if (sigfillset(&fullset) == -1) {
err(EXIT_FAILURE, "%s.%d: could not initialize signal masks",
__func__, __LINE__);
}
if (sigprocmask(SIG_BLOCK, &fullset, oldset) == -1)
err(EXIT_FAILURE, "%s.%d: sigprocmask", __func__, __LINE__);
}
void
restore_signals(sigset_t *oldset)
{
if (sigprocmask(SIG_SETMASK, oldset, NULL) == -1)
err(EXIT_FAILURE, "%s.%d: sigprocmask", __func__, __LINE__);
}
void
await_signal(hid_t fid)
{
sigset_t sleepset;
struct timespec tick = {.tv_sec = 0, .tv_nsec = 1000000000 / 100};
if (sigemptyset(&sleepset) == -1 ||
sigaddset(&sleepset, SIGINT) == -1 ||
sigaddset(&sleepset, SIGUSR1) == -1) {
err(EXIT_FAILURE, "%s.%d: could not initialize signal masks",
__func__, __LINE__);
}
for (;;) {
const int rc = sigtimedwait(&sleepset, NULL, &tick);
if (rc == SIGUSR1 || rc == SIGINT) {
printf("Received %s, wrapping things up.\n", (rc == SIGUSR1) ? "SIGUSR1" : "SIGINT");
break;
} else if (rc == -1 && errno == EAGAIN) {
estack_state_t es;
/* Avoid deadlock with peer: periodically enter the API so that
* tick processing occurs and data is flushed so that the peer
* can see it.
*
* The call we make will fail, but that's ok,
* so squelch errors.
*/
es = disable_estack();
(void)H5Aexists_by_name(fid, "nonexistent", "nonexistent",
H5P_DEFAULT);
restore_estack(es);
} else if (rc == -1)
err(EXIT_FAILURE, "%s: sigtimedwait", __func__);
}
}
hid_t
vfd_swmr_create_fapl(bool writer, bool only_meta_pages, bool use_vfd_swmr)
{
H5F_vfd_swmr_config_t config;
hid_t fapl;
/* Create file access property list */
if((fapl = h5_fileaccess()) < 0) {
warnx("h5_fileaccess");
return badhid;
}
/* FOR NOW: set to use latest format, the "old" parameter is not used */
if(H5Pset_libver_bounds(fapl, H5F_LIBVER_LATEST, H5F_LIBVER_LATEST) < 0) {
warnx("H5Pset_libver_bounds");
return badhid;
}
/*
* Set up to open the file with VFD SWMR configured.
*/
/* Enable page buffering */
if(H5Pset_page_buffer_size(fapl, 4096, only_meta_pages ? 100 : 0, 0) < 0) {
warnx("H5Pset_page_buffer_size");
return badhid;
}
memset(&config, 0, sizeof(config));
config.version = H5F__CURR_VFD_SWMR_CONFIG_VERSION;
config.tick_len = 1;
config.max_lag = 5;
config.writer = writer;
config.md_pages_reserved = 128;
HDstrcpy(config.md_file_path, "./my_md_file");
/* Enable VFD SWMR configuration */
if(use_vfd_swmr && H5Pset_vfd_swmr_config(fapl, &config) < 0) {
warnx("H5Pset_vfd_swmr_config");
return badhid;
}
return fapl;
}
|
