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Commit7ced1d1

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Add FIELDNO_* macro designating offset into structs required for JIT.
For any interesting JIT target, fields inside structs need to beaccessed.b96d550 contains infrastructure for syncing the definitionof types between postgres C code and runtime code generation withLLVM. But that doesn't sync the number or names of fields insidestructs, just the types (including padding etc).One option would be to hardcode the offset numbers in the JIT code,but that'd be hard to keep in sync. Instead add macros indicating thefield offset to the fields that need to be accessed. Not pretty, butmanageable.Author: Andres FreundDiscussion:https://postgr.es/m/20170901064131.tazjxwus3k2w3ybh@alap3.anarazel.de
1 parentfb46ac2 commit7ced1d1

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6 files changed

+34
-0
lines changed

6 files changed

+34
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lines changed

‎src/include/access/htup.h

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Original file line numberDiff line numberDiff line change
@@ -64,6 +64,7 @@ typedef struct HeapTupleData
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uint32t_len;/* length of *t_data */
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ItemPointerDatat_self;/* SelfItemPointer */
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Oidt_tableOid;/* table the tuple came from */
67+
#defineFIELDNO_HEAPTUPLEDATA_DATA 3
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HeapTupleHeadert_data;/* -> tuple header and data */
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}HeapTupleData;
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‎src/include/access/htup_details.h

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@@ -157,14 +157,18 @@ struct HeapTupleHeaderData
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/* Fields below here must match MinimalTupleData! */
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#defineFIELDNO_HEAPTUPLEHEADERDATA_INFOMASK2 2
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uint16t_infomask2;/* number of attributes + various flags */
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#defineFIELDNO_HEAPTUPLEHEADERDATA_INFOMASK 3
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uint16t_infomask;/* various flag bits, see below */
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#defineFIELDNO_HEAPTUPLEHEADERDATA_HOFF 4
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uint8t_hoff;/* sizeof header incl. bitmap, padding */
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/* ^ - 23 bytes - ^ */
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#defineFIELDNO_HEAPTUPLEHEADERDATA_BITS 5
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bits8t_bits[FLEXIBLE_ARRAY_MEMBER];/* bitmap of NULLs */
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/* MORE DATA FOLLOWS AT END OF STRUCT */

‎src/include/executor/nodeAgg.h

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Original file line numberDiff line numberDiff line change
@@ -240,9 +240,12 @@ typedef struct AggStatePerAggData
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*/
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typedefstructAggStatePerGroupData
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{
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#defineFIELDNO_AGGSTATEPERGROUPDATA_TRANSVALUE 0
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DatumtransValue;/* current transition value */
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#defineFIELDNO_AGGSTATEPERGROUPDATA_TRANSVALUEISNULL 1
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booltransValueIsNull;
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#defineFIELDNO_AGGSTATEPERGROUPDATA_NOTRANSVALUE 2
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boolnoTransValue;/* true if transValue not set yet */
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/*

‎src/include/executor/tuptable.h

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Original file line numberDiff line numberDiff line change
@@ -116,16 +116,23 @@ typedef struct TupleTableSlot
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booltts_isempty;/* true = slot is empty */
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booltts_shouldFree;/* should pfree tts_tuple? */
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booltts_shouldFreeMin;/* should pfree tts_mintuple? */
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#defineFIELDNO_TUPLETABLESLOT_SLOW 4
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booltts_slow;/* saved state for slot_deform_tuple */
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#defineFIELDNO_TUPLETABLESLOT_TUPLE 5
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HeapTupletts_tuple;/* physical tuple, or NULL if virtual */
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#defineFIELDNO_TUPLETABLESLOT_TUPLEDESCRIPTOR 6
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TupleDesctts_tupleDescriptor;/* slot's tuple descriptor */
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MemoryContexttts_mcxt;/* slot itself is in this context */
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Buffertts_buffer;/* tuple's buffer, or InvalidBuffer */
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#defineFIELDNO_TUPLETABLESLOT_NVALID 9
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inttts_nvalid;/* # of valid values in tts_values */
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#defineFIELDNO_TUPLETABLESLOT_VALUES 10
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Datum*tts_values;/* current per-attribute values */
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#defineFIELDNO_TUPLETABLESLOT_ISNULL 11
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bool*tts_isnull;/* current per-attribute isnull flags */
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MinimalTupletts_mintuple;/* minimal tuple, or NULL if none */
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HeapTupleDatatts_minhdr;/* workspace for minimal-tuple-only case */
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#defineFIELDNO_TUPLETABLESLOT_OFF 14
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uint32tts_off;/* saved state for slot_deform_tuple */
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booltts_fixedTupleDescriptor;/* descriptor can't be changed */
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}TupleTableSlot;

‎src/include/fmgr.h

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Original file line numberDiff line numberDiff line change
@@ -80,9 +80,12 @@ typedef struct FunctionCallInfoData
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fmNodePtrcontext;/* pass info about context of call */
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fmNodePtrresultinfo;/* pass or return extra info about result */
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Oidfncollation;/* collation for function to use */
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#defineFIELDNO_FUNCTIONCALLINFODATA_ISNULL 4
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boolisnull;/* function must set true if result is NULL */
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shortnargs;/* # arguments actually passed */
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#defineFIELDNO_FUNCTIONCALLINFODATA_ARG 6
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Datumarg[FUNC_MAX_ARGS];/* Arguments passed to function */
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#defineFIELDNO_FUNCTIONCALLINFODATA_ARGNULL 7
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boolargnull[FUNC_MAX_ARGS];/* T if arg[i] is actually NULL */
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}FunctionCallInfoData;
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‎src/include/nodes/execnodes.h

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Original file line numberDiff line numberDiff line change
@@ -64,12 +64,15 @@ typedef struct ExprState
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* Storage for result value of a scalar expression, or for individual
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* column results within expressions built by ExecBuildProjectionInfo().
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*/
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#defineFIELDNO_EXPRSTATE_RESNULL 2
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boolresnull;
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#defineFIELDNO_EXPRSTATE_RESVALUE 3
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Datumresvalue;
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/*
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* If projecting a tuple result, this slot holds the result; else NULL.
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*/
75+
#defineFIELDNO_EXPRSTATE_RESULTSLOT 4
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TupleTableSlot*resultslot;
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/*
@@ -208,8 +211,11 @@ typedef struct ExprContext
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NodeTagtype;
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/* Tuples that Var nodes in expression may refer to */
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#defineFIELDNO_EXPRCONTEXT_SCANTUPLE 1
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TupleTableSlot*ecxt_scantuple;
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#defineFIELDNO_EXPRCONTEXT_INNERTUPLE 2
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TupleTableSlot*ecxt_innertuple;
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#defineFIELDNO_EXPRCONTEXT_OUTERTUPLE 3
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TupleTableSlot*ecxt_outertuple;
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/* Memory contexts for expression evaluation --- see notes above */
@@ -224,15 +230,21 @@ typedef struct ExprContext
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* Values to substitute for Aggref nodes in the expressions of an Agg
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* node, or for WindowFunc nodes within a WindowAgg node.
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*/
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#defineFIELDNO_EXPRCONTEXT_AGGVALUES 8
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Datum*ecxt_aggvalues;/* precomputed values for aggs/windowfuncs */
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#defineFIELDNO_EXPRCONTEXT_AGGNULLS 9
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bool*ecxt_aggnulls;/* null flags for aggs/windowfuncs */
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/* Value to substitute for CaseTestExpr nodes in expression */
239+
#defineFIELDNO_EXPRCONTEXT_CASEDATUM 10
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DatumcaseValue_datum;
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#defineFIELDNO_EXPRCONTEXT_CASENULL 11
232242
boolcaseValue_isNull;
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234244
/* Value to substitute for CoerceToDomainValue nodes in expression */
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#defineFIELDNO_EXPRCONTEXT_DOMAINDATUM 12
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DatumdomainValue_datum;
247+
#defineFIELDNO_EXPRCONTEXT_DOMAINNULL 13
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booldomainValue_isNull;
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/* Link to containing EState (NULL if a standalone ExprContext) */
@@ -1847,12 +1859,15 @@ typedef struct AggState
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ExprContext*hashcontext;/* econtexts for long-lived data (hashtable) */
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ExprContext**aggcontexts;/* econtexts for long-lived data (per GS) */
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ExprContext*tmpcontext;/* econtext for input expressions */
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#defineFIELDNO_AGGSTATE_CURAGGCONTEXT 14
18501863
ExprContext*curaggcontext;/* currently active aggcontext */
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AggStatePerAggcurperagg;/* currently active aggregate, if any */
1865+
#defineFIELDNO_AGGSTATE_CURPERTRANS 16
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AggStatePerTranscurpertrans;/* currently active trans state, if any */
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boolinput_done;/* indicates end of input */
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boolagg_done;/* indicates completion of Agg scan */
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intprojected_set;/* The last projected grouping set */
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#defineFIELDNO_AGGSTATE_CURRENT_SET 20
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intcurrent_set;/* The current grouping set being evaluated */
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Bitmapset*grouped_cols;/* grouped cols in current projection */
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List*all_grouped_cols;/* list of all grouped cols in DESC order */
@@ -1874,6 +1889,7 @@ typedef struct AggState
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* per-group pointers */
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/* support for evaluation of agg input expressions: */
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#defineFIELDNO_AGGSTATE_ALL_PERGROUPS 34
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AggStatePerGroup*all_pergroups;/* array of first ->pergroups, than
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* ->hash_pergroup */
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ProjectionInfo*combinedproj;/* projection machinery */

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