/[svn]/vendor/ircservices-5.1.24/ignore.c
ViewVC logotype

Contents of /vendor/ircservices-5.1.24/ignore.c

Parent Directory Parent Directory | Revision Log Revision Log


Revision 3389 - (show annotations)
Fri Apr 25 14:12:15 2014 UTC (6 years, 2 months ago) by michael
File MIME type: text/x-chdr
File size: 2950 byte(s)
- Imported ircservices-5.1.24

1 /* Ignore handling.
2 *
3 * IRC Services is copyright (c) 1996-2009 Andrew Church.
4 * E-mail: <achurch@achurch.org>
5 * Parts written by Andrew Kempe and others.
6 * This program is free but copyrighted software; see the file GPL.txt for
7 * details.
8 */
9
10 #include "services.h"
11
12 /*************************************************************************/
13
14 /* ignore_init: Initialize ignore-related fields of a new User structure. */
15
16 void ignore_init(User *u)
17 {
18 u->ignore = 0;
19 u->lastcmd = time_msec();
20 u->lastcmd_s = time(NULL);
21 }
22
23 /*************************************************************************/
24
25 /* ignore_update: Update the user's ignore level. The "ignore level" is a
26 * measure of how much time Services has spent processing
27 * this user's commands, and is calculated as a decaying
28 * average of the fraction of time spent on the user's
29 * commands over the total time Services has been running--
30 * more specifically, the average over time of a function
31 * whose value is 1 when Services is executing a command
32 * from the user and 0 at all other times. The rate of
33 * decay of the average, and hence the rate of response to
34 * new commands, is dependent on the IgnoreDecay
35 * configuration setting: the average decays by half every
36 * IgnoreDecay milliseconds (note that the value is given as
37 * seconds in the configuration file).
38 * The `msec' parameter to this function is the length
39 * of time taken by the most recent command (which caused
40 * this update). `msec' may be specified as zero to update
41 * the user's ignore level at any time.
42 */
43
44 void ignore_update(User *u, uint32 msec)
45 {
46 time_t now;
47 uint32 now_msec;
48
49 if (!IgnoreDecay) {
50 /* Ignore code disabled, just return */
51 return;
52 }
53 now = time(NULL);
54 now_msec = time_msec();
55 if (now - u->lastcmd_s > 1000000) {
56 /* Millisecond counter may have overflowed, just reset to 0 */
57 u->ignore = 0;
58 } else {
59 double zerolen = (now_msec - msec) - u->lastcmd;
60 if (zerolen > 0)
61 u->ignore *= pow(2, -(zerolen / IgnoreDecay));
62 }
63 if (msec) {
64 double factor;
65 while (msec > IgnoreDecay) {
66 u->ignore = u->ignore*0.5 + 0.5;
67 msec -= IgnoreDecay;
68 }
69 factor = pow(2, -((double)msec / IgnoreDecay));
70 u->ignore = u->ignore*factor + (1-factor);
71 }
72 u->lastcmd = now_msec;
73 u->lastcmd_s = now;
74 }
75
76 /*************************************************************************/
77
78 /*
79 * Local variables:
80 * c-file-style: "stroustrup"
81 * c-file-offsets: ((case-label . *) (statement-case-intro . *))
82 * indent-tabs-mode: nil
83 * End:
84 *
85 * vim: expandtab shiftwidth=4:
86 */

svnadmin@ircd-hybrid.org
ViewVC Help
Powered by ViewVC 1.1.28