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Use pthread_once() to replace a static integer initted flag.

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Reviewed by:	neel
This commit is contained in:
John Baldwin 2013-12-28 03:21:15 +00:00
parent 93f7e978f6
commit cf952fe841
1 changed files with 3 additions and 7 deletions
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10
usr.sbin/bhyve/pmtmr.c
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@ -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);