BSON Clock Abstraction
int64_t bson_get_monotonic_time (void); int bson_gettimeofday (struct timeval *tv, struct timezone *tz);
The clock abstraction in Libbson provides a cross-platform way to handle timeouts within the BSON library. It abstracts the differences in implementations of
gettimeofday() as well as providing a monotonic (incrementing only) clock in microseconds.