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Add support for tracking call counts and elapsed runtime for user-defined

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functions.

Note that because this patch changes FmgrInfo, any external C functions
you might be testing with 8.4 will need to be recompiled.

Patch by Martin Pihlak, some editorialization by me (principally, removing
tracking of getrusage() numbers)
This commit is contained in:
Tom Lane
2008-05-15 00:17:41 +00:00
parent 3bc25384d7
commit 93c701edc6
20 changed files with 830 additions and 67 deletions
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26
src/backend/executor/execQual.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/executor/execQual.c,v 1.230 2008/05/12 00:00:48 alvherre Exp $
* $PostgreSQL: pgsql/src/backend/executor/execQual.c,v 1.231 2008/05/15 00:17:39 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -46,6 +46,7 @@
#include "nodes/makefuncs.h"
#include "optimizer/planmain.h"
#include "parser/parse_expr.h"
#include "pgstat.h"
#include "utils/acl.h"
#include "utils/builtins.h"
#include "utils/lsyscache.h"
@ -1147,6 +1148,7 @@ ExecMakeFunctionResult(FuncExprState *fcache,
List *arguments = fcache->args;
Datum result;
FunctionCallInfoData fcinfo;
PgStat_FunctionCallUsage fcusage;
ReturnSetInfo rsinfo; /* for functions returning sets */
ExprDoneCond argDone;
bool hasSetArg;
@ -1250,11 +1252,16 @@ ExecMakeFunctionResult(FuncExprState *fcache,
if (callit)
{
pgstat_init_function_usage(&fcinfo, &fcusage);
fcinfo.isnull = false;
rsinfo.isDone = ExprSingleResult;
result = FunctionCallInvoke(&fcinfo);
*isNull = fcinfo.isnull;
*isDone = rsinfo.isDone;
pgstat_end_function_usage(&fcusage,
rsinfo.isDone != ExprMultipleResult);
}
else
{
@ -1346,9 +1353,14 @@ ExecMakeFunctionResult(FuncExprState *fcache,
}
}
}
pgstat_init_function_usage(&fcinfo, &fcusage);
fcinfo.isnull = false;
result = FunctionCallInvoke(&fcinfo);
*isNull = fcinfo.isnull;
pgstat_end_function_usage(&fcusage, true);
}
return result;
@ -1369,6 +1381,7 @@ ExecMakeFunctionResultNoSets(FuncExprState *fcache,
ListCell *arg;
Datum result;
FunctionCallInfoData fcinfo;
PgStat_FunctionCallUsage fcusage;
int i;
/* Guard against stack overflow due to overly complex expressions */
@ -1407,10 +1420,15 @@ ExecMakeFunctionResultNoSets(FuncExprState *fcache,
}
}
}
pgstat_init_function_usage(&fcinfo, &fcusage);
/* fcinfo.isnull = false; */ /* handled by InitFunctionCallInfoData */
result = FunctionCallInvoke(&fcinfo);
*isNull = fcinfo.isnull;
pgstat_end_function_usage(&fcusage, true);
return result;
}
@ -1434,6 +1452,7 @@ ExecMakeTableFunctionResult(ExprState *funcexpr,
bool returnsTuple;
bool returnsSet = false;
FunctionCallInfoData fcinfo;
PgStat_FunctionCallUsage fcusage;
ReturnSetInfo rsinfo;
HeapTupleData tmptup;
MemoryContext callerContext;
@ -1559,9 +1578,14 @@ ExecMakeTableFunctionResult(ExprState *funcexpr,
/* Call the function or expression one time */
if (direct_function_call)
{
pgstat_init_function_usage(&fcinfo, &fcusage);
fcinfo.isnull = false;
rsinfo.isDone = ExprSingleResult;
result = FunctionCallInvoke(&fcinfo);
pgstat_end_function_usage(&fcusage,
rsinfo.isDone != ExprMultipleResult);
}
else
{