Function pgstat_report_wait_start

src/include/utils/wait_event.h:286–294

---------- * pgstat_report_wait_start() - * * Called from places where server process needs to wait. This is called * to report wait event information. The wait information is stored * as 4-bytes where first byte represents the wait event class (type of * wait, for different types of wait, refer WaitClass) and the next * 3-bytes represent the actual wait event. Currently 2-bytes are used

 * ----------
 */
static inline void
pgstat_report_wait_start(uint32 wait_event_info)
{
	/*
	 * Since this is a four-byte field which is always read and written as
	 * four-bytes, updates are atomic.
	 */
	*(volatile uint32 *) my_wait_event_info = wait_event_info;
}

/* ----------
 * pgstat_report_wait_end() -