40 lines
1.4 KiB
C
40 lines
1.4 KiB
C
/*-------------------------------------------------------------------------
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*
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* instrument.h
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* definitions for run-time statistics collection
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*
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*
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* Copyright (c) 2001-2009, PostgreSQL Global Development Group
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*
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* $PostgreSQL: pgsql/src/include/executor/instrument.h,v 1.20 2009/01/01 17:23:59 momjian Exp $
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef INSTRUMENT_H
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#define INSTRUMENT_H
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#include "portability/instr_time.h"
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typedef struct Instrumentation
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{
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/* Info about current plan cycle: */
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bool running; /* TRUE if we've completed first tuple */
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instr_time starttime; /* Start time of current iteration of node */
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instr_time counter; /* Accumulated runtime for this node */
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double firsttuple; /* Time for first tuple of this cycle */
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double tuplecount; /* Tuples emitted so far this cycle */
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/* Accumulated statistics across all completed cycles: */
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double startup; /* Total startup time (in seconds) */
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double total; /* Total total time (in seconds) */
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double ntuples; /* Total tuples produced */
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double nloops; /* # of run cycles for this node */
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} Instrumentation;
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extern Instrumentation *InstrAlloc(int n);
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extern void InstrStartNode(Instrumentation *instr);
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extern void InstrStopNode(Instrumentation *instr, double nTuples);
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extern void InstrEndLoop(Instrumentation *instr);
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#endif /* INSTRUMENT_H */
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