diff options
author | Luke Shumaker <lukeshu@sbcglobal.net> | 2016-07-27 21:21:19 -0400 |
---|---|---|
committer | Luke Shumaker <lukeshu@sbcglobal.net> | 2016-07-27 21:21:19 -0400 |
commit | 38b93f33c4130a69b6ff1777ee59511f601abff6 (patch) | |
tree | 4f51d827b4e7598b3ab46f86a3c1ab5e03782700 /src/libbasic/ratelimit.c | |
parent | a9330854c56ccba7b6ce4bdb046ae7778b329622 (diff) |
./move.sh
Diffstat (limited to 'src/libbasic/ratelimit.c')
-rw-r--r-- | src/libbasic/ratelimit.c | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/src/libbasic/ratelimit.c b/src/libbasic/ratelimit.c new file mode 100644 index 0000000000..3ca5625e4d --- /dev/null +++ b/src/libbasic/ratelimit.c @@ -0,0 +1,56 @@ +/*** + This file is part of systemd. + + Copyright 2010 Lennart Poettering + + systemd 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. + + systemd 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 systemd; If not, see <http://www.gnu.org/licenses/>. +***/ + + +#include <sys/time.h> + +#include "macro.h" +#include "ratelimit.h" + +/* Modelled after Linux' lib/ratelimit.c by Dave Young + * <hidave.darkstar@gmail.com>, which is licensed GPLv2. */ + +bool ratelimit_test(RateLimit *r) { + usec_t ts; + + assert(r); + + if (r->interval <= 0 || r->burst <= 0) + return true; + + ts = now(CLOCK_MONOTONIC); + + if (r->begin <= 0 || + r->begin + r->interval < ts) { + r->begin = ts; + + /* Reset counter */ + r->num = 0; + goto good; + } + + if (r->num < r->burst) + goto good; + + return false; + +good: + r->num++; + return true; +} |