Add WAIT_EVENT_{CLASS,ID}_MASK in wait_event.c
These are useful to extract the class ID and the event ID associated to a single uint32 wait_event_info. Only two code paths use them now, but an upcoming patch will extend their use. Discussion: https://postgr.es/m/ZMcJ7F7nkGkIs8zP@paquier.xyz
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@ -39,6 +39,8 @@ static const char *pgstat_get_wait_io(WaitEventIO w);
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static uint32 local_my_wait_event_info;
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uint32 *my_wait_event_info = &local_my_wait_event_info;
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#define WAIT_EVENT_CLASS_MASK 0xFF000000
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#define WAIT_EVENT_ID_MASK 0x0000FFFF
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/*
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* Configure wait event reporting to report wait events to *wait_event_info.
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@ -82,7 +84,7 @@ pgstat_get_wait_event_type(uint32 wait_event_info)
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if (wait_event_info == 0)
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return NULL;
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classId = wait_event_info & 0xFF000000;
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classId = wait_event_info & WAIT_EVENT_CLASS_MASK;
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switch (classId)
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{
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@ -138,8 +140,8 @@ pgstat_get_wait_event(uint32 wait_event_info)
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if (wait_event_info == 0)
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return NULL;
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classId = wait_event_info & 0xFF000000;
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eventId = wait_event_info & 0x0000FFFF;
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classId = wait_event_info & WAIT_EVENT_CLASS_MASK;
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eventId = wait_event_info & WAIT_EVENT_ID_MASK;
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switch (classId)
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{
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