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aba5acdf SH |
1 | /* |
2 | * m_estimator.c Parse/print estimator module options. | |
3 | * | |
4 | * This program is free software; you can u32istribute it and/or | |
5 | * modify it under the terms of the GNU General Public License | |
6 | * as published by the Free Software Foundation; either version | |
7 | * 2 of the License, or (at your option) any later version. | |
8 | * | |
9 | * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> | |
10 | * | |
11 | */ | |
12 | ||
13 | #include <stdio.h> | |
14 | #include <stdlib.h> | |
15 | #include <unistd.h> | |
16 | #include <syslog.h> | |
17 | #include <fcntl.h> | |
18 | #include <sys/socket.h> | |
19 | #include <netinet/in.h> | |
20 | #include <arpa/inet.h> | |
21 | #include <string.h> | |
22 | ||
23 | #include "utils.h" | |
24 | #include "tc_util.h" | |
25 | ||
94c9cc51 | 26 | static void est_help(void); |
aba5acdf SH |
27 | |
28 | static void est_help(void) | |
29 | { | |
30 | fprintf(stderr, "Usage: ... estimator INTERVAL TIME-CONST\n"); | |
31 | fprintf(stderr, " INTERVAL is interval between measurements\n"); | |
32 | fprintf(stderr, " TIME-CONST is averaging time constant\n"); | |
33 | fprintf(stderr, "Example: ... est 1sec 8sec\n"); | |
94c9cc51 | 34 | return; |
aba5acdf SH |
35 | } |
36 | ||
37 | int parse_estimator(int *p_argc, char ***p_argv, struct tc_estimator *est) | |
38 | { | |
39 | int argc = *p_argc; | |
40 | char **argv = *p_argv; | |
41 | unsigned A, time_const; | |
ae665a52 | 42 | |
aba5acdf SH |
43 | NEXT_ARG(); |
44 | if (est->ewma_log) | |
45 | duparg("estimator", *argv); | |
46 | if (matches(*argv, "help") == 0) | |
47 | est_help(); | |
48 | if (get_usecs(&A, *argv)) | |
49 | invarg("estimator", "invalid estimator interval"); | |
50 | NEXT_ARG(); | |
51 | if (matches(*argv, "help") == 0) | |
52 | est_help(); | |
53 | if (get_usecs(&time_const, *argv)) | |
54 | invarg("estimator", "invalid estimator time constant"); | |
55 | if (tc_setup_estimator(A, time_const, est) < 0) { | |
56 | fprintf(stderr, "Error: estimator parameters are out of range.\n"); | |
94c9cc51 | 57 | return -1; |
aba5acdf SH |
58 | } |
59 | if (show_raw) | |
60 | fprintf(stderr, "[estimator i=%u e=%u]\n", est->interval, est->ewma_log); | |
61 | *p_argc = argc; | |
62 | *p_argv = argv; | |
63 | return 0; | |
64 | } |