diff options
Diffstat (limited to 'src/xtime.c')
| -rw-r--r-- | src/xtime.c | 22 |
1 files changed, 12 insertions, 10 deletions
diff --git a/src/xtime.c b/src/xtime.c index 406d694..79dafad 100644 --- a/src/xtime.c +++ b/src/xtime.c @@ -2,6 +2,7 @@ // SPDX-License-Identifier: 0BSD #include "xtime.h" +#include "atomic.h" #include "config.h" #include <errno.h> #include <limits.h> @@ -10,15 +11,19 @@ #include <time.h> #include <unistd.h> -/** Whether tzset() has been called. */ -static bool tz_is_set = false; +/** Call tzset() if necessary. */ +static void xtzset(void) { + static atomic bool is_set = false; -int xlocaltime(const time_t *timep, struct tm *result) { - // Should be called before localtime_r() according to POSIX.1-2004 - if (!tz_is_set) { + if (!load(&is_set, relaxed)) { tzset(); - tz_is_set = true; + store(&is_set, true, relaxed); } +} + +int xlocaltime(const time_t *timep, struct tm *result) { + // Should be called before localtime_r() according to POSIX.1-2004 + xtzset(); if (localtime_r(timep, result)) { return 0; @@ -29,10 +34,7 @@ int xlocaltime(const time_t *timep, struct tm *result) { int xgmtime(const time_t *timep, struct tm *result) { // Should be called before gmtime_r() according to POSIX.1-2004 - if (!tz_is_set) { - tzset(); - tz_is_set = true; - } + xtzset(); if (gmtime_r(timep, result)) { return 0; |