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
|
/*-
* BSD LICENSE
*
* Copyright (c) Intel Corporation.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "spdk/stdinc.h"
#include "spdk/env.h"
#include "spdk/event.h"
static char g_path[256];
static bool g_unaffinitize_thread = false;
static void
bdev_svc_usage(void)
{
}
static void
bdev_svc_parse_arg(int ch, char *arg)
{
}
static void
bdev_svc_start(void *arg1, void *arg2)
{
int fd;
int shm_id = (intptr_t)arg1;
if (g_unaffinitize_thread) {
spdk_unaffinitize_thread();
}
snprintf(g_path, sizeof(g_path), "/var/run/spdk_bdev%d", shm_id);
fd = open(g_path, O_CREAT | O_EXCL | O_RDWR, S_IFREG);
if (fd < 0) {
fprintf(stderr, "could not create sentinel file %s\n", g_path);
exit(1);
}
close(fd);
}
static void
bdev_svc_shutdown(void)
{
unlink(g_path);
spdk_app_stop(0);
}
int
main(int argc, char **argv)
{
int rc;
struct spdk_app_opts opts = {};
/* default value in opts structure */
spdk_app_opts_init(&opts);
opts.name = "bdev_svc";
opts.shutdown_cb = bdev_svc_shutdown;
opts.max_delay_us = 1000 * 1000;
if ((rc = spdk_app_parse_args(argc, argv, &opts, "", NULL,
bdev_svc_parse_arg, bdev_svc_usage)) !=
SPDK_APP_PARSE_ARGS_SUCCESS) {
exit(rc);
}
/* User did not specify a reactor mask. Test scripts may do this when using
* bdev_svc as a primary process to speed up nvme test programs by running
* them as secondary processes. In that case, we will unaffinitize the thread
* in the bdev_svc_start routine, which will allow the scheduler to move this
* thread so it doesn't conflict with pinned threads in the secondary processes.
*/
if (opts.reactor_mask == NULL) {
g_unaffinitize_thread = true;
}
rc = spdk_app_start(&opts, bdev_svc_start, (void *)(intptr_t)opts.shm_id, NULL);
spdk_app_fini();
return rc;
}
|
