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| author | Pablo Neira Ayuso <pablo@netfilter.org> | 2009-08-21 16:06:08 +0200 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2009-08-21 16:06:08 +0200 |
| commit | 58411110894c0a9e6a1a1ec9dbdf2fbe2ef3da00 (patch) | |
| tree | 384477cd9a167103eedde5d0b0993cd1ac927092 /src/alarm.c | |
| parent | 3e6852f806c4368eda451b39f12b2ac2f2b5d33b (diff) | |
| download | conntrack-tools-58411110894c0a9e6a1a1ec9dbdf2fbe2ef3da00.tar.gz conntrack-tools-58411110894c0a9e6a1a1ec9dbdf2fbe2ef3da00.zip | |
conntrackd: reduce the number of gettimeofday() syscalls
This patch reduces the number of gettimeofday syscalls by caching
the current time in a variable at the beginning of the main loop.
Based on a suggestion from Vincent Jardin.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'src/alarm.c')
| -rw-r--r-- | src/alarm.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/src/alarm.c b/src/alarm.c index fe938a0..006721a 100644 --- a/src/alarm.c +++ b/src/alarm.c @@ -17,6 +17,7 @@ */ #include "alarm.h" +#include "date.h" #include <stdlib.h> #include <limits.h> @@ -61,7 +62,7 @@ void add_alarm(struct alarm_block *alarm, unsigned long sc, unsigned long usc) del_alarm(alarm); alarm->tv.tv_sec = sc; alarm->tv.tv_usec = usc; - gettimeofday(&tv, NULL); + gettimeofday_cached(&tv); timeradd(&alarm->tv, &tv, &alarm->tv); __add_alarm(alarm); } @@ -107,7 +108,7 @@ get_next_alarm_run(struct timeval *next_run) struct rb_node *node; struct timeval tv; - gettimeofday(&tv, NULL); + gettimeofday_cached(&tv); node = rb_first(&alarm_root); if (node) { @@ -126,7 +127,7 @@ do_alarm_run(struct timeval *next_run) struct alarm_block *this, *tmp; struct timeval tv; - gettimeofday(&tv, NULL); + gettimeofday_cached(&tv); INIT_LIST_HEAD(&alarm_run_queue); for (node = rb_first(&alarm_root); node; node = rb_next(node)) { |