/*-------------------------------------------------------------------------
 *
 * execdebug.h--
 *    #defines governing debugging behaviour in the executor
 *
 *
 * Copyright (c) 1994, Regents of the University of California
 *
 * $Id: execdebug.h,v 1.1 1996/08/28 07:22:06 scrappy Exp $
 *
 *-------------------------------------------------------------------------
 */
#ifndef EXECDEBUG_H
#define EXECDEBUG_H

/* ----------------------------------------------------------------
 *	debugging defines.
 *
 *	If you want certain debugging behaviour, then #define
 *	the variable to 1, else #undef it. -cim 10/26/89
 * ----------------------------------------------------------------
 */

/* ----------------
 *	EXEC_DEBUGSTORETUP is for tuple table debugging - this
 *	will print a message every time we call ExecStoreTuple.
 *	-cim 3/20/91
 * ----------------
 */
#undef EXEC_DEBUGSTORETUP

/* ----------------
 *	EXEC_TUPLECOUNT is a #define which causes the
 *	executor keep track of tuple counts.  This might be
 *	causing some problems with the decstation stuff so
 *	you might want to undefine this if you are doing work
 *	on the decs  - cim 10/20/89
 * ----------------
 */
#undef EXEC_TUPLECOUNT

/* ----------------
 *	EXEC_SHOWBUFSTATS controls whether or not buffer statistics
 *	are shown for each query.  -cim 2/9/89
 * ----------------
 */
#undef EXEC_SHOWBUFSTATS

/* ----------------
 *	EXEC_CONTEXTDEBUG turns on the printing of debugging information
 *	by CXT_printf() calls regarding which memory context is the
 *	CurrentMemoryContext for palloc() calls.  
 * ----------------
 */
#undef EXEC_CONTEXTDEBUG

/* ----------------
 *	EXEC_RETURNSIZE is a compile flag governing the
 *	behaviour of lispFmgr..  See ExecMakeFunctionResult().
 *	Undefining this avoids a problem in the system cache.
 *
 *	Note: undefining this means that there is incorrect
 *	      information in the const nodes corresponding
 *	      to function (or operator) results.  The thing is,
 *	      99% of the time this is fine because when you do
 *	      something like x = emp.sal + 1, you already know
 *	      the type and size of x so the fact that + didn't
 *	      return the correct size doesn't matter.
 *	      With variable length stuff the size is stored in
 *	      the first few bytes of the data so again, it's
 *	      not likely to matter.
 * ----------------
 */
#undef EXEC_RETURNSIZE

/* ----------------
 *	EXEC_UTILSDEBUG is a flag which turns on debugging of the
 *	executor utilities by EU_printf() in eutils.c
 * ----------------
 */
#undef EXEC_UTILSDEBUG

/* ----------------
 *	EXEC_NESTLOOPDEBUG is a flag which turns on debugging of the
 *	nest loop node by NL_printf() and ENL_printf() in nestloop.c
 * ----------------
 */
#undef EXEC_NESTLOOPDEBUG

/* ----------------
 *	EXEC_PROCDEBUG is a flag which turns on debugging of
 *	ExecProcNode() by PN_printf() in procnode.c
 * ----------------
 */
#undef EXEC_PROCDEBUG

/* ----------------
 *	EXEC_EVALDEBUG is a flag which turns on debugging of
 *	ExecEval and ExecTargetList() stuff by EV_printf() in qual.c
 * ----------------
 */
#undef EXEC_EVALDEBUG

/* ----------------
 *	EXEC_SCANDEBUG is a flag which turns on debugging of
 *	the ExecSeqScan() stuff by S_printf() in seqscan.c
 * ----------------
 */
#undef EXEC_SCANDEBUG

/* ----------------
 *	EXEC_SORTDEBUG is a flag which turns on debugging of
 *	the ExecSort() stuff by SO_printf() in sort.c
 * ----------------
 */
#undef EXEC_SORTDEBUG

/* ----------------
 *	EXEC_MERGEJOINDEBUG is a flag which turns on debugging of
 *	the ExecMergeJoin() stuff by MJ_printf() in mergejoin.c
 * ----------------
 */
#undef EXEC_MERGEJOINDEBUG

/* ----------------
 *	EXEC_MERGEJOINPFREE is a flag which causes merge joins
 *	to pfree intermittant tuples (which is the proper thing)
 *	Not defining this means we avoid menory management problems
 *	at the cost of doing deallocation of stuff only at the
 *	end of the transaction
 * ----------------
 */
#undef EXEC_MERGEJOINPFREE

/* ----------------
 *	EXEC_DEBUGINTERACTIVE is a flag which enables the
 *	user to issue "DEBUG" commands from an interactive
 *	backend. 
 * ----------------
 */
#undef EXEC_DEBUGINTERACTIVE

/* ----------------
 *	EXEC_DEBUGVARIABLEFILE is string, which if defined will
 *	be loaded when the executor is initialized.  If this
 *	string is not defined then nothing will be loaded..
 *
 *	Example:
 *
 * #define EXEC_DEBUGVARIABLEFILE "/a/postgres/cimarron/.pg_debugvars"
 #
 *	Note: since these variables are read at execution time,
 *	they can't affect the first query.. this hack should be
 *	replaced by something better sometime. -cim 11/2/89
 * ----------------
 */
#undef EXEC_DEBUGVARIABLEFILE

/* ----------------------------------------------------------------
 *	#defines controlled by above definitions
 *
 *	Note: most of these are "incomplete" because I didn't
 *	      need the ones not defined.  More should be added
 *	      only as necessary -cim 10/26/89
 * ----------------------------------------------------------------
 */
#define T_OR_F(b)  		(b ? "true" : "false")
#define NULL_OR_TUPLE(slot) 	(TupIsNull(slot) ? "null" : "a tuple")


/* #define EXEC_TUPLECOUNT - XXX take out for now for executor stubbing -- jolly*/
/* ----------------
 *	tuple count debugging defines
 * ----------------
 */
#ifdef EXEC_TUPLECOUNT
extern int     NTupleProcessed;
extern int     NTupleRetrieved;
extern int     NTupleReplaced;
extern int     NTupleAppended;
extern int     NTupleDeleted;
extern int     NIndexTupleProcessed;
extern int     NIndexTupleInserted;

#define IncrRetrieved()		NTupleRetrieved++
#define	IncrAppended()		NTupleAppended++
#define	IncrDeleted()		NTupleDeleted++
#define	IncrReplaced()		NTupleReplaced++
#define	IncrInserted()		NTupleInserted++
#define IncrProcessed()		NTupleProcessed++
#define IncrIndexProcessed()	NIndexTupleProcessed++
#define IncrIndexInserted()	NIndexTupleInserted++
#else
#define IncrRetrieved()
#define	IncrAppended()
#define	IncrDeleted()
#define	IncrReplaced()
#define	IncrInserted()
#define IncrProcessed()
#define IncrIndexProcessed()
#define IncrIndexInserted()
#endif /* EXEC_TUPLECOUNT */

/* ----------------
 *	memory context debugging defines
 * ----------------
 */
#ifdef EXEC_CONTEXTDEBUG
#define CXT_printf(s)			printf(s)
#define CXT1_printf(s, a)		printf(s, a)
#else
#define CXT_printf(s)		
#define CXT1_printf(s, a)		
#endif /* EXEC_CONTEXTDEBUG */

/* ----------------
 *	eutils debugging defines
 * ----------------
 */
#ifdef EXEC_UTILSDEBUG
#define EU_nodeDisplay(l)		nodeDisplay(l, 0)
#define EU_printf(s)			printf(s)
#define EU1_printf(s, a)		printf(s, a)
#define EU4_printf(s, a, b, c, d)	printf(s, a, b, c, d)
#else
#define EU_nodeDisplay(l)		
#define EU_printf(s)			
#define EU1_printf(s, a)		
#define EU4_printf(s, a, b, c, d)	
#endif /* EXEC_UTILSDEBUG */


/* ----------------
 *	nest loop debugging defines
 * ----------------
 */
#ifdef EXEC_NESTLOOPDEBUG
#define NL_nodeDisplay(l)		nodeDisplay(l, 0)
#define NL_printf(s)			printf(s)
#define NL1_printf(s, a)		printf(s, a)
#define NL4_printf(s, a, b, c, d)	printf(s, a, b, c, d)
#define ENL1_printf(message)		printf("ExecNestLoop: %s\n", message)
#else
#define NL_nodeDisplay(l)		
#define NL_printf(s)			
#define NL1_printf(s, a)		
#define NL4_printf(s, a, b, c, d)	
#define ENL1_printf(message)
#endif /* EXEC_NESTLOOPDEBUG */

/* ----------------
 *	proc node debugging defines
 * ----------------
 */
#ifdef EXEC_PROCDEBUG
#define PN_printf(s)			printf(s)
#define PN1_printf(s, p)		printf(s, p)
#else
#define PN_printf(s)		
#define PN1_printf(s, p)	
#endif /* EXEC_PROCDEBUG */

/* ----------------
 *	exec eval / target list debugging defines
 * ----------------
 */
#ifdef EXEC_EVALDEBUG
#define EV_nodeDisplay(l)		nodeDisplay(l, 0)
#define EV_printf(s)			printf(s)
#define EV1_printf(s, a)		printf(s, a)
#define EV5_printf(s, a, b, c, d, e)	printf(s, a, b, c, d, e)
#else
#define EV_nodeDisplay(l)		
#define EV_printf(s)			
#define EV1_printf(s, a)		
#define EV5_printf(s, a, b, c, d, e)	
#endif /* EXEC_EVALDEBUG */

/* ----------------
 *	scan debugging defines
 * ----------------
 */
#ifdef EXEC_SCANDEBUG
#define S_nodeDisplay(l)		nodeDisplay(l, 0)
#define S_printf(s)			printf(s)
#define S1_printf(s, p)			printf(s, p)
#else
#define S_nodeDisplay(l)	
#define S_printf(s)		
#define S1_printf(s, p)		
#endif /*  EXEC_SCANDEBUG */
 
/* ----------------
 *	sort node debugging defines
 * ----------------
 */
#ifdef EXEC_SORTDEBUG
#define SO_nodeDisplay(l)		nodeDisplay(l, 0)
#define SO_printf(s)			printf(s)
#define SO1_printf(s, p)		printf(s, p)
#else
#define SO_nodeDisplay(l)	
#define SO_printf(s)		
#define SO1_printf(s, p)		
#endif /* EXEC_SORTDEBUG */

/* ----------------
 *	merge join debugging defines
 * ----------------
 */
#ifdef EXEC_MERGEJOINDEBUG
#define MJ_nodeDisplay(l)		nodeDisplay(l, 0)
#define MJ_printf(s)			printf(s)
#define MJ1_printf(s, p)		printf(s, p)
#define MJ2_printf(s, p1, p2)		printf(s, p1, p2)
#define MJ_debugtup(tuple, type)	debugtup(tuple, type)
#define MJ_dump(context, state)		ExecMergeTupleDump(econtext, state)
#define MJ_DEBUG_QUAL(clause, res) \
  MJ2_printf("  ExecQual(%s, econtext) returns %s\n", \
	     CppAsString(clause), T_OR_F(res));
	    
#define MJ_DEBUG_MERGE_COMPARE(qual, res) \
  MJ2_printf("  MergeCompare(mergeclauses, %s, ..) returns %s\n", \
	     CppAsString(qual), T_OR_F(res));

#define MJ_DEBUG_PROC_NODE(slot) \
  MJ2_printf("  %s = ExecProcNode(innerPlan) returns %s\n", \
	     CppAsString(slot), NULL_OR_TUPLE(slot));
#else
#define MJ_nodeDisplay(l)
#define MJ_printf(s)		
#define MJ1_printf(s, p)		
#define MJ2_printf(s, p1, p2)
#define MJ_debugtup(tuple, type)
#define MJ_dump(context, state)
#define MJ_DEBUG_QUAL(clause, res)
#define MJ_DEBUG_MERGE_COMPARE(qual, res)
#define MJ_DEBUG_PROC_NODE(slot)
#endif /* EXEC_MERGEJOINDEBUG */

/* ----------------------------------------------------------------
 *	DO NOT DEFINE THESE EVER OR YOU WILL BURN!
 * ----------------------------------------------------------------
 */
/* ----------------
 *	DOESNOTWORK is currently placed around memory manager
 *	code that is known to cause problems.  Code in between
 *	is likely not converted and probably won't work anyways.
 * ----------------
 */
#undef DOESNOTWORK

/* ----------------
 *	PERHAPSNEVER is placed around the "scan attribute"
 *	support code for the rule manager because for now we
 *	do things inefficiently.  The correct solution to our
 *	problem is to add code to the parser/planner to save
 *	attribute information for the rule manager rather than
 *	have the executor have to grope through the entire plan
 *	for it so if we ever decide to make things better,
 *	we should probably delete the stuff in between PERHAPSNEVER..
 * ----------------
 */
#undef PERHAPSNEVER

/* ----------------
 *	NOTYET is placed around any code not yet implemented
 *	in the executor.  Only remove these when actually implementing
 *	said code.
 * ----------------
 */
#undef NOTYET

extern long NDirectFileRead;
extern long NDirectFileWrite;

#endif /*  ExecDebugIncluded */
