diff options
| -rw-r--r-- | shared/timespec-util.h | 12 | ||||
| -rw-r--r-- | tests/timespec-test.c | 11 |
2 files changed, 23 insertions, 0 deletions
diff --git a/shared/timespec-util.h b/shared/timespec-util.h index 34a120ae..7260dc8b 100644 --- a/shared/timespec-util.h +++ b/shared/timespec-util.h @@ -29,6 +29,7 @@ #include <stdint.h> #include <assert.h> #include <time.h> +#include <stdbool.h> #define NSEC_PER_SEC 1000000000 @@ -133,6 +134,17 @@ timespec_sub_to_msec(const struct timespec *a, const struct timespec *b) return timespec_sub_to_nsec(a, b) / 1000000; } +/* Check if a timespec is zero + * + * \param a timespec + * \return whether the timespec is zero + */ +static inline bool +timespec_is_zero(const struct timespec *a) +{ + return a->tv_sec == 0 && a->tv_nsec == 0; +} + /* Convert milli-Hertz to nanoseconds * * \param mhz frequency in mHz, not zero diff --git a/tests/timespec-test.c b/tests/timespec-test.c index a5039110..4e83605d 100644 --- a/tests/timespec-test.c +++ b/tests/timespec-test.c @@ -164,3 +164,14 @@ ZUC_TEST(timespec_test, timespec_sub_to_msec) b.tv_nsec = 1000000L; ZUC_ASSERT_EQ((998 * 1000) + 1, timespec_sub_to_msec(&a, &b)); } + +ZUC_TEST(timespec_test, timespec_is_zero) +{ + struct timespec zero = { 0 }; + struct timespec non_zero_sec = { .tv_sec = 1, .tv_nsec = 0 }; + struct timespec non_zero_nsec = { .tv_sec = 0, .tv_nsec = 1 }; + + ZUC_ASSERT_TRUE(timespec_is_zero(&zero)); + ZUC_ASSERT_FALSE(timespec_is_zero(&non_zero_nsec)); + ZUC_ASSERT_FALSE(timespec_is_zero(&non_zero_sec)); +} |