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
|
/*
* Copyright (C) 2012 Red Hat, Inc.
*
* Author: Angus Salkeld <asalkeld@redhat.com>
*
* libqb is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 2.1 of the License, or
* (at your option) any later version.
*
* libqb is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with libqb. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <signal.h>
#include <qb/qbdefs.h>
#include <qb/qbrb.h>
#include <qb/qbutil.h>
#include <qb/qblog.h>
#define BUFFER_CHUNK_SIZE (50*50*10)
static qb_ringbuffer_t *rb = NULL;
static int keep_reading = QB_TRUE;
static void sigterm_handler(int32_t num)
{
qb_log(LOG_INFO, "signal %d", num);
keep_reading = QB_FALSE;
}
int32_t main(int32_t argc, char *argv[])
{
ssize_t num_read;
int8_t buffer[BUFFER_CHUNK_SIZE];
signal(SIGINT, sigterm_handler);
qb_log_init("rbreader", LOG_USER, LOG_EMERG);
qb_log_ctl(QB_LOG_SYSLOG, QB_LOG_CONF_ENABLED, QB_FALSE);
qb_log_filter_ctl(QB_LOG_STDERR, QB_LOG_FILTER_ADD,
QB_LOG_FILTER_FILE, "*", LOG_INFO);
qb_log_ctl(QB_LOG_STDERR, QB_LOG_CONF_ENABLED, QB_TRUE);
rb = qb_rb_open("tester", BUFFER_CHUNK_SIZE * 3,
QB_RB_FLAG_SHARED_PROCESS | QB_RB_FLAG_CREATE, 0);
if (rb == NULL) {
qb_perror(LOG_ERR, "failed to create ringbuffer");
return -1;
}
while (keep_reading) {
num_read = qb_rb_chunk_read(rb, buffer,
BUFFER_CHUNK_SIZE, 5500);
if (num_read < 0) {
qb_perror(LOG_ERR, "nothing to read");
}
}
qb_rb_close(rb);
return 0;
}
|
