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Commit7395a90

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Add WAIT_EVENT_{CLASS,ID}_MASK in wait_event.c
These are useful to extract the class ID and the event ID associated toa single uint32 wait_event_info. Only two code paths use them now, butan upcoming patch will extend their use.Discussion:https://postgr.es/m/ZMcJ7F7nkGkIs8zP@paquier.xyz
1 parentf1e9f6b commit7395a90

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‎src/backend/utils/activity/wait_event.c

Lines changed: 5 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -39,6 +39,8 @@ static const char *pgstat_get_wait_io(WaitEventIO w);
3939
staticuint32local_my_wait_event_info;
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uint32*my_wait_event_info=&local_my_wait_event_info;
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42+
#defineWAIT_EVENT_CLASS_MASK0xFF000000
43+
#defineWAIT_EVENT_ID_MASK0x0000FFFF
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/*
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* Configure wait event reporting to report wait events to *wait_event_info.
@@ -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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returnNULL;
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85-
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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{
@@ -138,8 +140,8 @@ pgstat_get_wait_event(uint32 wait_event_info)
138140
if (wait_event_info==0)
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returnNULL;
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141-
classId=wait_event_info&0xFF000000;
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eventId=wait_event_info&0x0000FFFF;
143+
classId=wait_event_info&WAIT_EVENT_CLASS_MASK;
144+
eventId=wait_event_info&WAIT_EVENT_ID_MASK;
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switch (classId)
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{

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