Author: jhb
Date: Sat Dec 28 03:21:15 2013
New Revision: 259997
URL: http://svnweb.freebsd.org/changeset/base/259997
Log:
Use pthread_once() to replace a static integer initted flag.
Reviewed by: neel
Modified:
head/usr.sbin/bhyve/pmtmr.c
Modified: head/usr.sbin/bhyve/pmtmr.c
==============================================================================
--- head/usr.sbin/bhyve/pmtmr.c Sat Dec 28 03:11:09 2013 (r259996)
+++ head/usr.sbin/bhyve/pmtmr.c Sat Dec 28 03:21:15 2013 (r259997)
@@ -54,6 +54,7 @@ __FBSDID("$FreeBSD$");
#define PMTMR_FREQ 3579545 /* 3.579545MHz */
static pthread_mutex_t pmtmr_mtx;
+static pthread_once_t pmtmr_once = PTHREAD_ONCE_INIT;
static uint64_t pmtmr_old;
@@ -123,6 +124,7 @@ pmtmr_init(void)
pmtmr_uptime_old = tsnew;
pmtmr_old = timespec_to_pmtmr(&tsnew, &tsold);
}
+ pthread_mutex_init(&pmtmr_mtx, NULL);
}
static uint32_t
@@ -133,13 +135,7 @@ pmtmr_val(void)
uint64_t pmtmr_new;
int error;
- static int inited = 0;
-
- if (!inited) {
- pthread_mutex_init(&pmtmr_mtx, NULL);
- pmtmr_init();
- inited = 1;
- }
+ pthread_once(&pmtmr_once, pmtmr_init);
pthread_mutex_lock(&pmtmr_mtx);
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