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vops.c
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#include "postgres.h"
#include <float.h>
#include <math.h>
#include "funcapi.h"
#include "miscadmin.h"
#if PG_VERSION_NUM>=90300
#include "access/htup_details.h"
#endif
#include "access/relscan.h"
#include "catalog/catversion.h"
#include "catalog/dependency.h"
#include "catalog/index.h"
#include "catalog/namespace.h"
#include "catalog/pg_type.h"
#include "commands/explain.h"
#include "storage/ipc.h"
#include "storage/lmgr.h"
#include "storage/lwlock.h"
#include "storage/bufmgr.h"
#include "storage/proc.h"
#include "tcop/pquery.h"
#include "tcop/tcopprot.h"
#include "tcop/utility.h"
#include "utils/array.h"
#include "utils/datum.h"
#if PG_VERSION_NUM>=120000
#include "access/heapam.h"
#include "utils/float.h"
#else
#include "utils/tqual.h"
#endif
#include "utils/builtins.h"
#include "utils/datetime.h"
#include <utils/typcache.h>
#include "utils/lsyscache.h"
#include "utils/memutils.h"
#include "utils/snapmgr.h"
#include "utils/syscache.h"
#include "parser/parse_relation.h"
#include "parser/parse_func.h"
#include "parser/parse_type.h"
#include "parser/analyze.h"
#include "libpq/pqformat.h"
#include "executor/spi.h"
#include "nodes/nodeFuncs.h"
#include "nodes/makefuncs.h"
#include "nodes/pg_list.h"
#include "vops.h"
#ifdef PG_MODULE_MAGIC
PG_MODULE_MAGIC;
#endif
#if !USE_FLOAT8_BYVAL
#error VOPS requires 64-bit version of Postgres
#endif
#if PG_VERSION_NUM>=140000
#define FUNC_CALL_CTX COERCE_EXPLICIT_CALL, -1
#else
#define FUNC_CALL_CTX -1
#endif
/* pg module functions */
void _PG_init(void);
uint64 filter_mask = ~0;
static struct {
char const* name;
Oid oid;
} vops_type_map[] = {
{"vops_bool", InvalidOid},
{"vops_char", InvalidOid},
{"vops_int2", InvalidOid},
{"vops_int4", InvalidOid},
{"vops_int8", InvalidOid},
{"vops_date", InvalidOid},
{"vops_timestamp", InvalidOid},
{"vops_float4", InvalidOid},
{"vops_float8", InvalidOid},
{"vops_interval", InvalidOid},
{"vops_text", InvalidOid}
};
static struct {
char const* name;
vops_agg_kind kind;
} const vops_agg_kind_map[] = {
{"sum", VOPS_AGG_SUM},
{"avg", VOPS_AGG_AVG},
{"max", VOPS_AGG_MAX},
{"min", VOPS_AGG_MIN},
{"count", VOPS_AGG_COUNT}
};
static const Oid vops_map_tid[] =
{
BOOLOID,
CHAROID,
INT2OID,
INT4OID,
INT8OID,
DATEOID,
TIMESTAMPOID,
FLOAT4OID,
FLOAT8OID,
INTERVALOID,
TEXTOID
};
static bool vops_auto_substitute_projections;
static vops_agg_state* vops_init_agg_state(char const* aggregates, Oid elem_type, int n_aggregates);
static vops_agg_state* vops_create_agg_state(int n_aggregates);
static void vops_agg_state_accumulate(vops_agg_state* state, int64 group_by, int i, Datum* tiles, bool* nulls);
static void reset_static_cache(void);
vops_type vops_get_type(Oid typid)
{
int i;
if (vops_type_map[0].oid == InvalidOid) {
for (i = 0; i < VOPS_LAST; i++) {
vops_type_map[i].oid = TypenameGetTypid(vops_type_map[i].name);
}
}
for (i = 0; i < VOPS_LAST && vops_type_map[i].oid != typid; i++);
return (vops_type)i;
}
static bool is_vops_type(Oid typeid)
{
return vops_get_type(typeid) != VOPS_LAST;
}
#define SCALAR_PAYLOAD(tile, i) ((tile)->payload[i])
#define BOOL_PAYLOAD(tile, i) (((tile)->payload >> (i)) & 1)
/* Parameters used in macros:
* TYPE: Postgres SQL type: char, int2, int4, int8, float4, float8
* SSTYPE: Postgres SQL sum type: int8, int8, int8, int8, float8, float8
* CTYPE: Postgres C type: char, int16, int32, int64, float8, float8
* XTYPE: Postgres extended C type: int32, int32, int32, int64, float8, float8
* STYPE: Postgres sum type: long64, long64, long64, long64, float8, float8
* DTYPE: Postgres type to convert to Datum: Char, Int16, Int32, Int64, Float4, Float8
* GCTYPE: capitalized prefix used in GETARG macro: CHAR, INT16, INT32, INT64, FLOAT4, FLOAT8
* GXTYPE: capitalized prefix of extended type: INT32, INT32, INT32, INT64, FLOAT8, FLOAT8
* GSTYPE: capitalized prefix of sum type: INT64, INT64, INT64, INT64, FLOAT8, FLOAT8
*/
#define CMP_OP(TYPE,OP,COP) \
PG_FUNCTION_INFO_V1(vops_##TYPE##_##OP); \
Datum vops_##TYPE##_##OP(PG_FUNCTION_ARGS) \
{ \
vops_##TYPE* left = (vops_##TYPE*)PG_GETARG_POINTER(0); \
vops_##TYPE* right = (vops_##TYPE*)PG_GETARG_POINTER(1); \
vops_bool* result = (vops_bool*)palloc(sizeof(vops_bool)); \
int i; \
uint64 payload = 0; \
for (i = 0; i < TILE_SIZE; i++) payload |= (uint64)(left->payload[i] COP right->payload[i]) << i; \
result->payload = payload; \
result->hdr.null_mask = left->hdr.null_mask | right->hdr.null_mask; \
result->hdr.empty_mask = left->hdr.empty_mask | right->hdr.empty_mask; \
PG_RETURN_POINTER(result); \
}
#define CMP_RCONST_OP(TYPE,XTYPE,GXTYPE,OP,COP) \
PG_FUNCTION_INFO_V1(vops_##TYPE##_##OP##_rconst); \
Datum vops_##TYPE##_##OP##_rconst(PG_FUNCTION_ARGS) \
{ \
vops_##TYPE* left = (vops_##TYPE*)PG_GETARG_POINTER(0); \
XTYPE right = PG_GETARG_##GXTYPE(1); \
vops_bool* result = (vops_bool*)palloc(sizeof(vops_bool)); \
int i; \
uint64 payload = 0; \
for (i = 0; i < TILE_SIZE; i++) payload |= (uint64)(left->payload[i] COP right) << i; \
result->payload = payload; \
result->hdr = left->hdr; \
PG_RETURN_POINTER(result); \
} \
#define CMP_LCONST_OP(TYPE,XTYPE,GXTYPE,OP,COP) \
PG_FUNCTION_INFO_V1(vops_##TYPE##_##OP##_lconst); \
Datum vops_##TYPE##_##OP##_lconst(PG_FUNCTION_ARGS) \
{ \
XTYPE left = PG_GETARG_##GXTYPE(0); \
vops_##TYPE* right = (vops_##TYPE*)PG_GETARG_POINTER(1); \
vops_bool* result = (vops_bool*)palloc(sizeof(vops_bool)); \
int i; \
uint64 payload = 0; \
for (i = 0; i < TILE_SIZE; i++) payload |= (uint64)(left COP right->payload[i]) << i; \
result->payload = payload; \
result->hdr = right->hdr; \
PG_RETURN_POINTER(result); \
}
#define BETWIXT_OP(TYPE,XTYPE,GXTYPE) \
PG_FUNCTION_INFO_V1(vops_betwixt_##TYPE); \
Datum vops_betwixt_##TYPE(PG_FUNCTION_ARGS) \
{ \
vops_##TYPE* opd = (vops_##TYPE*)PG_GETARG_POINTER(0); \
XTYPE low = PG_GETARG_##GXTYPE(1); \
XTYPE high = PG_GETARG_##GXTYPE(2); \
vops_bool* result = (vops_bool*)palloc(sizeof(vops_bool)); \
int i; \
uint64 payload = 0; \
for (i = 0; i < TILE_SIZE; i++) payload |= (uint64)(opd->payload[i] >= low && opd->payload[i] <= high) << i; \
result->payload = payload; \
result->hdr = opd->hdr; \
PG_RETURN_POINTER(result); \
} \
#define CONST_OP(TYPE,CTYPE,GXTYPE) \
PG_FUNCTION_INFO_V1(vops_##TYPE##_const); \
Datum vops_##TYPE##_const(PG_FUNCTION_ARGS) \
{ \
CTYPE x = (CTYPE)PG_GETARG_##GXTYPE(0); \
vops_##TYPE* result = (vops_##TYPE*)palloc(sizeof(vops_##TYPE)); \
int i; \
for (i = 0; i < TILE_SIZE; i++) { \
result->payload[i] = x; \
} \
result->hdr.null_mask = 0; \
result->hdr.empty_mask = 0; \
PG_RETURN_POINTER(result); \
} \
#define IFNULL_OP(TYPE,CTYPE,GXTYPE) \
PG_FUNCTION_INFO_V1(vops_ifnull_##TYPE); \
Datum vops_ifnull_##TYPE(PG_FUNCTION_ARGS) \
{ \
vops_##TYPE* opd = (vops_##TYPE*)PG_GETARG_POINTER(0); \
CTYPE subst = (CTYPE)PG_GETARG_##GXTYPE(1); \
vops_##TYPE* result = (vops_##TYPE*)palloc(sizeof(vops_##TYPE)); \
int i; \
for (i = 0; i < TILE_SIZE; i++) { \
result->payload[i] = (opd->hdr.null_mask & ((uint64)1 << i)) ? subst : opd->payload[i]; \
} \
result->hdr.null_mask = 0; \
result->hdr.empty_mask = opd->hdr.empty_mask; \
PG_RETURN_POINTER(result); \
} \
#define COALESCE_OP(TYPE,GXTYPE) \
PG_FUNCTION_INFO_V1(vops_coalesce_##TYPE); \
Datum vops_coalesce_##TYPE(PG_FUNCTION_ARGS) \
{ \
vops_##TYPE* opd = (vops_##TYPE*)PG_GETARG_POINTER(0); \
vops_##TYPE* subst = (vops_##TYPE*)PG_GETARG_POINTER(1); \
vops_##TYPE* result = (vops_##TYPE*)palloc(sizeof(vops_##TYPE)); \
int i; \
for (i = 0; i < TILE_SIZE; i++) { \
result->payload[i] = (opd->hdr.null_mask & ((uint64)1 << i)) ? subst->payload[i] : opd->payload[i]; \
} \
result->hdr.null_mask = opd->hdr.null_mask & subst->hdr.null_mask; \
result->hdr.empty_mask = opd->hdr.empty_mask | subst->hdr.empty_mask; \
PG_RETURN_POINTER(result); \
} \
#define BIN_RCONST_OP(TYPE,XTYPE,GXTYPE,OP,COP) \
PG_FUNCTION_INFO_V1(vops_##TYPE##_##OP##_rconst); \
Datum vops_##TYPE##_##OP##_rconst(PG_FUNCTION_ARGS) \
{ \
vops_##TYPE* left = (vops_##TYPE*)PG_GETARG_POINTER(0); \
XTYPE right = PG_GETARG_##GXTYPE(1); \
vops_##TYPE* result = (vops_##TYPE*)palloc(sizeof(vops_##TYPE));\
int i; \
for (i = 0; i < TILE_SIZE; i++) result->payload[i] = left->payload[i] COP right; \
result->hdr = left->hdr; \
PG_RETURN_POINTER(result); \
}
#define BIN_LCONST_OP(TYPE,XTYPE,GXTYPE,OP,COP) \
PG_FUNCTION_INFO_V1(vops_##TYPE##_##OP##_lconst); \
Datum vops_##TYPE##_##OP##_lconst(PG_FUNCTION_ARGS) \
{ \
XTYPE left = PG_GETARG_##GXTYPE(0); \
vops_##TYPE* right = (vops_##TYPE*)PG_GETARG_POINTER(1); \
vops_##TYPE* result = (vops_##TYPE*)palloc(sizeof(vops_##TYPE));\
int i; \
for (i = 0; i < TILE_SIZE; i++) result->payload[i] = left COP right->payload[i]; \
result->hdr = right->hdr; \
PG_RETURN_POINTER(result); \
}
#define BIN_OP(TYPE,OP,COP) \
PG_FUNCTION_INFO_V1(vops_##TYPE##_##OP); \
Datum vops_##TYPE##_##OP(PG_FUNCTION_ARGS) \
{ \
vops_##TYPE* left = (vops_##TYPE*)PG_GETARG_POINTER(0); \
vops_##TYPE* right = (vops_##TYPE*)PG_GETARG_POINTER(1); \
vops_##TYPE* result = (vops_##TYPE*)palloc(sizeof(vops_##TYPE));\
int i; \
for (i = 0; i < TILE_SIZE; i++) result->payload[i] = left->payload[i] COP right->payload[i]; \
result->hdr.null_mask = left->hdr.null_mask | right->hdr.null_mask; \
result->hdr.empty_mask = left->hdr.empty_mask | right->hdr.empty_mask; \
PG_RETURN_POINTER(result); \
}
#define UNARY_OP(TYPE,OP,COP) \
PG_FUNCTION_INFO_V1(vops_##TYPE##_##OP); \
Datum vops_##TYPE##_##OP(PG_FUNCTION_ARGS) \
{ \
vops_##TYPE* opd = (vops_##TYPE*)PG_GETARG_POINTER(0); \
vops_##TYPE* result = (vops_##TYPE*)palloc(sizeof(vops_##TYPE));\
int i; \
for (i = 0; i < TILE_SIZE; i++) result->payload[i] = COP opd->payload[i]; \
result->hdr = opd->hdr; \
PG_RETURN_POINTER(result); \
}
#define BOOL_BIN_OP(OP,COP) \
PG_FUNCTION_INFO_V1(vops_bool_##OP); \
Datum vops_bool_##OP(PG_FUNCTION_ARGS) \
{ \
vops_bool* left = (vops_bool*)PG_GETARG_POINTER(0); \
vops_bool* right = (vops_bool*)PG_GETARG_POINTER(1); \
vops_bool* result = (vops_bool*)palloc(sizeof(vops_bool)); \
result->payload = left->payload COP right->payload; \
result->hdr.null_mask = left->hdr.null_mask | right->hdr.null_mask; \
result->hdr.empty_mask = left->hdr.empty_mask | right->hdr.empty_mask; \
PG_RETURN_POINTER(result); \
}
#define SUM_AGG(TYPE,STYPE,GSTYPE) \
PG_FUNCTION_INFO_V1(vops_##TYPE##_sum_accumulate); \
Datum vops_##TYPE##_sum_accumulate(PG_FUNCTION_ARGS) \
{ \
vops_##TYPE* opd = (vops_##TYPE*)PG_GETARG_POINTER(1); \
bool is_null = PG_ARGISNULL(0); \
STYPE sum = is_null ? 0 : PG_GETARG_##GSTYPE(0); \
uint64 mask = filter_mask & ~opd->hdr.null_mask & ~opd->hdr.empty_mask; \
int i; \
if (~mask == 0) { \
for (i = 0; i < TILE_SIZE; i++) { \
sum += opd->payload[i]; \
} \
PG_RETURN_##GSTYPE(sum); \
} else { \
for (i = 0; i < TILE_SIZE; i++) { \
if (mask & ((uint64)1 << i)) { \
is_null = false; \
sum += opd->payload[i]; \
} \
} \
if (is_null) { \
PG_RETURN_NULL(); \
} else { \
PG_RETURN_##GSTYPE(sum); \
} \
} \
}
#define SUM_WIN(TYPE,SSTYPE,STYPE) \
PG_FUNCTION_INFO_V1(vops_##TYPE##_sum_extend); \
Datum vops_##TYPE##_sum_extend(PG_FUNCTION_ARGS) \
{ \
vops_##SSTYPE* state = (vops_##SSTYPE*)PG_GETARG_POINTER(0); \
vops_##TYPE* val = (vops_##TYPE*)PG_GETARG_POINTER(1); \
STYPE sum; \
int i; \
if (PG_ARGISNULL(0)) { \
MemoryContext agg_context; \
if (!AggCheckCallContext(fcinfo, &agg_context)) \
elog(ERROR, "aggregate function called in non-aggregate context"); \
state = (vops_##SSTYPE*)MemoryContextAllocZero(agg_context, sizeof(vops_##SSTYPE)); \
state->hdr.null_mask = ~0; \
} else { \
state->hdr.null_mask = (int64)state->hdr.null_mask >> 63; \
} \
state->hdr.empty_mask = ~filter_mask; \
sum = state->payload[TILE_SIZE-1]; \
if (PG_ARGISNULL(1)) { \
for (i = 0; i < TILE_SIZE; i++) { \
state->payload[i] = sum; \
} \
} else { \
uint64 mask = filter_mask & ~val->hdr.empty_mask & ~val->hdr.null_mask; \
state->hdr.empty_mask |= val->hdr.empty_mask; \
for (i = 0; i < TILE_SIZE; i++) { \
if (mask & ((uint64)1 << i)) { \
state->hdr.null_mask &= ((uint64)1 << i) - 1; \
sum += val->payload[i]; \
} \
state->payload[i] = sum; \
} \
} \
PG_RETURN_POINTER(state); \
} \
typedef struct { vops_##SSTYPE tile; vops_##TYPE hist; int n_nulls; } vops_##TYPE##_msum_state; \
PG_FUNCTION_INFO_V1(vops_##TYPE##_msum_extend); \
Datum vops_##TYPE##_msum_extend(PG_FUNCTION_ARGS) \
{ \
vops_##TYPE##_msum_state* state = (vops_##TYPE##_msum_state*)PG_GETARG_POINTER(0); \
vops_##TYPE* val = (vops_##TYPE*)PG_GETARG_POINTER(1); \
uint32 size = PG_ARGISNULL(2) ? 0 : PG_GETARG_UINT32(2); \
STYPE sum; \
int i; \
uint64 null_mask = 0; \
if (size == 0 || size > TILE_SIZE) { \
elog(ERROR, "Window size should be in range [1,%d]", TILE_SIZE-1); \
} \
if (PG_ARGISNULL(0)) { \
MemoryContext agg_context; \
if (!AggCheckCallContext(fcinfo, &agg_context)) \
elog(ERROR, "aggregate function called in non-aggregate context"); \
state = (vops_##TYPE##_msum_state*)MemoryContextAllocZero(agg_context, sizeof(vops_##TYPE##_msum_state)); \
state->hist.hdr.null_mask = ~0; \
state->n_nulls = size; \
} \
state->tile.hdr.empty_mask = ~filter_mask; \
sum = state->tile.payload[TILE_SIZE-1]; \
state->hist.hdr.null_mask = ~0; \
if (PG_ARGISNULL(1)) { \
for (i = 0; i < TILE_SIZE; i++) { \
sum -= state->hist.payload[(i-size) % TILE_SIZE]; \
state->n_nulls -= (state->hist.hdr.null_mask >> ((i-size) % TILE_SIZE)) & 1; \
null_mask |= (uint64)(++state->n_nulls == size) << i; \
state->hist.payload[i] = 0; \
state->tile.payload[i] = sum; \
} \
} else { \
uint64 mask = filter_mask & ~val->hdr.empty_mask & ~val->hdr.null_mask; \
state->tile.hdr.empty_mask |= val->hdr.empty_mask; \
for (i = 0; i < TILE_SIZE; i++) { \
sum -= state->hist.payload[(i-size) % TILE_SIZE]; \
state->n_nulls -= (state->hist.hdr.null_mask >> ((i-size) % TILE_SIZE)) & 1; \
if (mask & ((uint64)1 << i)) { \
sum += val->payload[i]; \
state->hist.payload[i] = val->payload[i]; \
state->hist.hdr.null_mask &= ~((uint64)1 << i); \
} else { \
null_mask |= (uint64)(++state->n_nulls == size) << i; \
state->hist.payload[i] = 0; \
} \
state->tile.payload[i] = sum; \
} \
} \
state->tile.hdr.null_mask = null_mask; \
PG_RETURN_POINTER(state); \
} \
#define AVG_WIN(TYPE) \
PG_FUNCTION_INFO_V1(vops_##TYPE##_avg_extend); \
Datum vops_##TYPE##_avg_extend(PG_FUNCTION_ARGS) \
{ \
vops_window_state* state = (vops_window_state*)PG_GETARG_POINTER(0); \
vops_##TYPE* val = (vops_##TYPE*)PG_GETARG_POINTER(1); \
int i; \
if (PG_ARGISNULL(0)) { \
MemoryContext agg_context; \
if (!AggCheckCallContext(fcinfo, &agg_context)) \
elog(ERROR, "aggregate function called in non-aggregate context"); \
state = (vops_window_state*)MemoryContextAllocZero(agg_context, sizeof(vops_window_state)); \
state->tile.hdr.null_mask = ~0; \
} else { \
state->tile.hdr.null_mask = (int64)state->tile.hdr.null_mask >> 63; \
} \
state->tile.hdr.empty_mask = ~filter_mask; \
if (PG_ARGISNULL(1)) { \
for (i = 0; i < TILE_SIZE; i++) { \
state->tile.payload[i] = state->tile.payload[TILE_SIZE-1]; \
} \
} else { \
uint64 mask = filter_mask & ~val->hdr.empty_mask & ~val->hdr.null_mask; \
state->tile.hdr.empty_mask |= val->hdr.empty_mask; \
for (i = 0; i < TILE_SIZE; i++) { \
if (mask & ((uint64)1 << i)) { \
state->tile.hdr.null_mask &= ((uint64)1 << i) - 1; \
state->sum += val->payload[i]; \
state->count += 1; \
} \
state->tile.payload[i] = state->sum/state->count; \
} \
} \
PG_RETURN_POINTER(state); \
}
#define MINMAX_WIN(TYPE,CTYPE,OP,COP) \
PG_FUNCTION_INFO_V1(vops_##TYPE##_##OP##_extend); \
Datum vops_##TYPE##_##OP##_extend(PG_FUNCTION_ARGS) \
{ \
vops_##TYPE* state = (vops_##TYPE*)PG_GETARG_POINTER(0); \
vops_##TYPE* val = (vops_##TYPE*)PG_GETARG_POINTER(1); \
CTYPE result; \
bool is_null = PG_ARGISNULL(0); \
int i; \
if (is_null) { \
MemoryContext agg_context; \
if (!AggCheckCallContext(fcinfo, &agg_context)) \
elog(ERROR, "aggregate function called in non-aggregate context"); \
state = (vops_##TYPE*)MemoryContextAllocZero(agg_context, sizeof(vops_##TYPE)); \
state->hdr.null_mask = ~0; \
} else { \
state->hdr.null_mask = (int64)state->hdr.null_mask >> 63; \
is_null = state->hdr.null_mask != 0; \
} \
state->hdr.empty_mask = ~filter_mask; \
result = state->payload[TILE_SIZE-1]; \
if (PG_ARGISNULL(1)) { \
for (i = 0; i < TILE_SIZE; i++) { \
state->payload[i] = result; \
} \
} else { \
uint64 mask = filter_mask & ~val->hdr.empty_mask & ~val->hdr.null_mask; \
state->hdr.empty_mask |= val->hdr.empty_mask; \
for (i = 0; i < TILE_SIZE; i++) { \
if (mask & ((uint64)1 << i)) { \
if (is_null || val->payload[i] COP result) { \
is_null = false; \
state->hdr.null_mask &= ((uint64)1 << i) - 1; \
result = val->payload[i]; \
} \
} \
state->payload[i] = result; \
} \
} \
PG_RETURN_POINTER(state); \
}
#define MINMAX_AGG(TYPE,CTYPE,GCTYPE,OP,COP) \
PG_FUNCTION_INFO_V1(vops_##TYPE##_##OP##_accumulate); \
Datum vops_##TYPE##_##OP##_accumulate(PG_FUNCTION_ARGS) \
{ \
vops_##TYPE* opd = (vops_##TYPE*)PG_GETARG_POINTER(1); \
bool is_null = PG_ARGISNULL(0); \
CTYPE result = is_null ? 0 : PG_GETARG_##GCTYPE(0); \
int i; \
if (!PG_ARGISNULL(1)) { \
uint64 mask = filter_mask & ~opd->hdr.empty_mask & ~opd->hdr.null_mask; \
for (i = 0; i < TILE_SIZE; i++) { \
if (mask & ((uint64)1 << i)) { \
if (is_null || opd->payload[i] COP result) { \
result = opd->payload[i]; \
is_null = false; \
} \
} \
} \
} \
if (is_null) { \
PG_RETURN_NULL(); \
} else { \
PG_RETURN_##GCTYPE(result); \
} \
}
#define LAG_WIN(TYPE,CTYPE) \
typedef struct { vops_##TYPE tile; CTYPE lag; bool is_null; } vops_lag_##TYPE; \
PG_FUNCTION_INFO_V1(vops_##TYPE##_lag_extend); \
Datum vops_##TYPE##_lag_extend(PG_FUNCTION_ARGS) \
{ \
vops_lag_##TYPE* state = (vops_lag_##TYPE*)PG_GETARG_POINTER(0);\
vops_##TYPE* opd = (vops_##TYPE*)PG_GETARG_POINTER(1); \
int i; \
CTYPE lag; \
bool is_null = PG_ARGISNULL(0); \
if (is_null) { \
MemoryContext agg_context; \
if (PG_ARGISNULL(1)) PG_RETURN_NULL(); \
if (!AggCheckCallContext(fcinfo, &agg_context)) \
elog(ERROR, "aggregate function called in non-aggregate context"); \
state = (vops_lag_##TYPE*)MemoryContextAllocZero(agg_context, sizeof(vops_lag_##TYPE)); \
state->is_null = true; \
lag = 0; \
} else { \
is_null = state->is_null; \
lag = state->lag; \
} \
state->tile.hdr.empty_mask = ~filter_mask; \
state->tile.hdr.null_mask = 0; \
if (PG_ARGISNULL(1)) { \
for (i = 0; i < TILE_SIZE; i++) { \
if (filter_mask & ((uint64)1 << i)) { \
state->tile.payload[i] = lag; \
state->tile.hdr.null_mask |= (uint64)is_null << i; \
is_null = true; \
break; \
} \
} \
} else { \
uint64 mask = filter_mask & ~opd->hdr.empty_mask; \
state->tile.hdr.empty_mask |= opd->hdr.empty_mask; \
for (i = 0; i < TILE_SIZE; i++) { \
if (mask & ((uint64)1 << i)) { \
state->tile.payload[i] = lag; \
state->tile.hdr.null_mask |= (uint64)is_null << i; \
lag = opd->payload[i]; \
is_null = (opd->hdr.null_mask >> i) & 1; \
} \
} \
} \
state->lag = lag; \
state->is_null = is_null; \
PG_RETURN_POINTER(state); \
}
#define AVG_AGG(TYPE) \
PG_FUNCTION_INFO_V1(vops_##TYPE##_avg_accumulate); \
Datum vops_##TYPE##_avg_accumulate(PG_FUNCTION_ARGS) \
{ \
vops_##TYPE* opd = (vops_##TYPE*)PG_GETARG_POINTER(1); \
vops_avg_state* state = PG_ARGISNULL(0) ? NULL : (vops_avg_state*)PG_GETARG_POINTER(0); \
uint64 mask = filter_mask & ~opd->hdr.empty_mask & ~opd->hdr.null_mask; \
int i; \
for (i = 0; i < TILE_SIZE; i++) { \
if (mask & ((uint64)1 << i)) { \
if (state == NULL) { \
MemoryContext agg_context; \
if (!AggCheckCallContext(fcinfo, &agg_context)) \
elog(ERROR, "aggregate function called in non-aggregate context"); \
state = (vops_avg_state*)MemoryContextAllocZero(agg_context, sizeof(vops_avg_state)); \
} \
state->count += 1; \
state->sum += opd->payload[i]; \
} \
} \
if (state == NULL) { \
PG_RETURN_NULL(); \
} else { \
PG_RETURN_POINTER(state); \
} \
} \
#define WAVG_AGG(TYPE) \
PG_FUNCTION_INFO_V1(vops_##TYPE##_wavg_accumulate); \
Datum vops_##TYPE##_wavg_accumulate(PG_FUNCTION_ARGS) \
{ \
vops_var_state* state = PG_ARGISNULL(0) ? NULL : (vops_var_state*)PG_GETARG_POINTER(0); \
vops_##TYPE* price = (vops_##TYPE*)PG_GETARG_POINTER(1); \
vops_##TYPE* volume = (vops_##TYPE*)PG_GETARG_POINTER(2); \
uint64 mask = filter_mask & ~price->hdr.empty_mask & ~price->hdr.null_mask & ~volume->hdr.null_mask; \
int i; \
for (i = 0; i < TILE_SIZE; i++) { \
if (mask & ((uint64)1 << i)) { \
if (state == NULL) { \
MemoryContext agg_context; \
if (!AggCheckCallContext(fcinfo, &agg_context)) \
elog(ERROR, "aggregate function called in non-aggregate context"); \
state = (vops_var_state*)MemoryContextAllocZero(agg_context, sizeof(vops_var_state)); \
} \
state->sum += (double)price->payload[i]*volume->payload[i]; \
state->sum2 += volume->payload[i]; \
} \
} \
if (state == NULL) { \
PG_RETURN_NULL(); \
} else { \
PG_RETURN_POINTER(state); \
} \
} \
#define VAR_AGG(TYPE) \
PG_FUNCTION_INFO_V1(vops_##TYPE##_var_accumulate); \
Datum vops_##TYPE##_var_accumulate(PG_FUNCTION_ARGS) \
{ \
vops_##TYPE* opd = (vops_##TYPE*)PG_GETARG_POINTER(1); \
vops_var_state* state = PG_ARGISNULL(0) ? NULL : (vops_var_state*)PG_GETARG_POINTER(0); \
uint64 mask = filter_mask & ~opd->hdr.empty_mask & ~opd->hdr.null_mask; \
int i; \
for (i = 0; i < TILE_SIZE; i++) { \
if (mask & ((uint64)1 << i)) { \
if (state == NULL) { \
MemoryContext agg_context; \
if (!AggCheckCallContext(fcinfo, &agg_context)) \
elog(ERROR, "aggregate function called in non-aggregate context"); \
state = (vops_var_state*)MemoryContextAllocZero(agg_context, sizeof(vops_var_state)); \
} \
state->count += 1; \
state->sum += opd->payload[i]; \
state->sum2 += (double)opd->payload[i]*opd->payload[i]; \
} \
} \
if (state == NULL) { \
PG_RETURN_NULL(); \
} else { \
PG_RETURN_POINTER(state); \
} \
} \
#define FIRST_AGG(TYPE,GCTYPE,PAYLOAD) \
PG_FUNCTION_INFO_V1(vops_##TYPE##_first); \
Datum vops_##TYPE##_first(PG_FUNCTION_ARGS) \
{ \
vops_##TYPE* tile = (vops_##TYPE*)PG_GETARG_POINTER(0); \
uint64 mask = ~(tile->hdr.empty_mask | tile->hdr.null_mask); \
int i; \
for (i = 0; i < TILE_SIZE; i++) { \
if (mask & ((uint64)1 << i)) { \
PG_RETURN_##GCTYPE(PAYLOAD(tile, i)); \
} \
} \
PG_RETURN_NULL(); \
}
#define LAST_AGG(TYPE,GCTYPE,PAYLOAD) \
PG_FUNCTION_INFO_V1(vops_##TYPE##_last); \
Datum vops_##TYPE##_last(PG_FUNCTION_ARGS) \
{ \
vops_##TYPE* tile = (vops_##TYPE*)PG_GETARG_POINTER(0); \
uint64 mask = ~(tile->hdr.empty_mask | tile->hdr.null_mask); \
int i; \
for (i = TILE_SIZE; --i >= 0;) { \
if (mask & ((uint64)1 << i)) { \
PG_RETURN_##GCTYPE(PAYLOAD(tile, i)); \
} \
} \
PG_RETURN_NULL(); \
}
#define LOW_AGG(TYPE,CTYPE,GCTYPE) \
PG_FUNCTION_INFO_V1(vops_##TYPE##_low); \
Datum vops_##TYPE##_low(PG_FUNCTION_ARGS) \
{ \
vops_##TYPE* tile = (vops_##TYPE*)PG_GETARG_POINTER(0); \
CTYPE min = 0; \
bool is_null = true; \
uint64 mask = ~(tile->hdr.empty_mask | tile->hdr.null_mask); \
int i; \
for (i = 0; i < TILE_SIZE; i++) { \
if (mask & ((uint64)1 << i)) { \
if (is_null || tile->payload[i] < min) { \
is_null = false; \
min = tile->payload[i]; \
} \
} \
} \
if (is_null) { \
PG_RETURN_NULL(); \
} else { \
PG_RETURN_##GCTYPE(min); \
} \
}
#define HIGH_AGG(TYPE,CTYPE,GCTYPE) \
PG_FUNCTION_INFO_V1(vops_##TYPE##_high); \
Datum vops_##TYPE##_high(PG_FUNCTION_ARGS) \
{ \
vops_##TYPE* tile = (vops_##TYPE*)PG_GETARG_POINTER(0); \
CTYPE max = 0; \
bool is_null = true; \
uint64 mask = ~(tile->hdr.empty_mask | tile->hdr.null_mask); \
int i; \
for (i = 0; i < TILE_SIZE; i++) { \
if (mask & ((uint64)1 << i)) { \
if (is_null || tile->payload[i] > max) { \
is_null = false; \
max = tile->payload[i]; \
} \
} \
} \
if (is_null) { \
PG_RETURN_NULL(); \
} else { \
PG_RETURN_##GCTYPE(max); \
} \
}
#define IN_FUNC(TYPE,CTYPE,STYPE,FORMAT) \
PG_FUNCTION_INFO_V1(vops_##TYPE##_input); \
Datum vops_##TYPE##_input(PG_FUNCTION_ARGS) \
{ \
char const* str = PG_GETARG_CSTRING(0); \
int i, n; \
STYPE val = 0; \
vops_##TYPE* result; \
if (str == NULL) { \
PG_RETURN_NULL(); \
} \
result = (vops_##TYPE*)palloc(sizeof(vops_##TYPE)); \
result->hdr.null_mask = 0; \
result->hdr.empty_mask = 0; \
if (*str != '{') { \
if (sscanf(str, "%" #FORMAT "%n", &val, &n) != 1) { \
elog(ERROR, "Failed to parse VOPS constant '%s'", str); \
} \
if (str[n] != '\0') { \
elog(ERROR, "Failed to parse constant: '%s'", str); \
} \
for (i=0; i < TILE_SIZE; i++) { \
result->payload[i] = (CTYPE)val; \
} \
} else { \
str += 1; \
for (i=0; i < TILE_SIZE; i++) { \
if (*str == ',' || *str == '}') { \
result->hdr.empty_mask |= (uint64)1 << i; \
if (*str == ',') { \
str += 1; \
} \
} else { \
if (*str == '?') { \
result->hdr.null_mask |= (uint64)1 << i; \
str += 1; \
} else { \
if (sscanf(str, "%" #FORMAT "%n", &val, &n) != 1) { \
elog(ERROR, "Failed to parse tile item %d: '%s'", i, str); \
} \
str += n; \
result->payload[i] = (CTYPE)val; \
} \
if (*str == ',') { \
str += 1; \
} else if (*str != '}') { \
elog(ERROR, "Failed to parse tile: separator expected '%s' found", str); \
} \
} \
} \
if (*str != '}') { \
elog(ERROR, "Failed to parse tile: unexpected trailing data '%s'", str); \
} \
} \
PG_RETURN_POINTER(result); \
}
#define OUT_FUNC(TYPE,STYPE,FORMAT,PREC) \
PG_FUNCTION_INFO_V1(vops_##TYPE##_output); \
Datum vops_##TYPE##_output(PG_FUNCTION_ARGS) \
{ \
vops_##TYPE* tile = (vops_##TYPE*)PG_GETARG_POINTER(0); \
char buf[MAX_TILE_STRLEN]; \
int p = 0; \
char sep = '{'; \
int i; \
for (i = 0; i < TILE_SIZE; i++) { \
if (tile->hdr.empty_mask & ((uint64)1 << i)) { \
p += sprintf(buf + p, "%c", sep); \
} else if (tile->hdr.null_mask & ((uint64)1 << i)) { \
p += sprintf(buf + p, "%c?", sep); \
} else { \
p += sprintf(buf + p, "%c%.*" #FORMAT, sep, PREC, (STYPE)tile->payload[i]); \
} \
sep = ','; \
} \
strcpy(buf + p, "}"); \
PG_RETURN_CSTRING(pstrdup(buf)); \
}
#define GROUP_BY_FUNC(TYPE) \
PG_FUNCTION_INFO_V1(vops_##TYPE##_group_by); \
Datum vops_##TYPE##_group_by(PG_FUNCTION_ARGS) \
{ \
vops_agg_state* state = (vops_agg_state*)(PG_ARGISNULL(0) ? NULL : PG_GETARG_POINTER(0)); \
vops_##TYPE* gby = (vops_##TYPE*)PG_GETARG_POINTER(1); \
char const* aggregates = PG_GETARG_CSTRING(2); \
ArrayType* args = PG_GETARG_ARRAYTYPE_P(3); \
int i; \
int16 elmlen; \
bool elmbyval; \
char elmalign; \
Datum* elems; \
bool* nulls; \
int n_elems; \
MemoryContext old_context; \
MemoryContext agg_context; \
uint64 mask = filter_mask & ~gby->hdr.null_mask & ~gby->hdr.empty_mask; \
get_typlenbyvalalign(args->elemtype, &elmlen, &elmbyval, &elmalign); \
deconstruct_array(args, args->elemtype, elmlen, elmbyval, elmalign, &elems, &nulls, &n_elems); \
if (!AggCheckCallContext(fcinfo, &agg_context)) \
elog(ERROR, "aggregate function called in non-aggregate context"); \
old_context = MemoryContextSwitchTo(agg_context); \
if (state == NULL) { \
state = vops_init_agg_state(aggregates, args->elemtype, n_elems); \
} \
for (i = 0; i < TILE_SIZE; i++) { \
if (mask & ((uint64)1 << i)) { \
vops_agg_state_accumulate(state, gby->payload[i], i, elems, nulls); \
} \
} \
MemoryContextSwitchTo(old_context); \
PG_RETURN_POINTER(state); \
}
#define FIRST_FUNC(TYPE,DTYPE,NAME,CMP,PAYLOAD) \
PG_FUNCTION_INFO_V1(vops_##TYPE##_##NAME##_accumulate); \
Datum vops_##TYPE##_##NAME##_accumulate(PG_FUNCTION_ARGS) \
{ \
vops_first_state* state = (vops_first_state*)PG_GETARG_POINTER(0); \
vops_##TYPE* vars = (vops_##TYPE*)PG_GETARG_POINTER(1); \
vops_int8* tss = (vops_int8*)PG_GETARG_POINTER(2); \
if (state == NULL) { \
MemoryContext agg_context; \
if (!AggCheckCallContext(fcinfo, &agg_context)) \
elog(ERROR, "aggregate function called in non-aggregate context"); \
state = (vops_first_state*)MemoryContextAlloc(agg_context, sizeof(vops_first_state)); \
state->val_is_null = true; \
state->ts_is_null = true; \
} \
if (tss != NULL) \
{ \
int i; \
uint64 mask = ~(tss->hdr.empty_mask | tss->hdr.null_mask); \
for (i = 0; i < TILE_SIZE; i++) { \
if (mask & ((uint64)1 << i)) { \
if (state->ts_is_null || tss->payload[i] CMP state->ts) { \
state->ts = tss->payload[i]; \
state->ts_is_null = false; \
if (vars != NULL) { \
if ((vars->hdr.empty_mask | vars->hdr.null_mask) & ((uint64)1 << i)) { \
state->val_is_null = true; \
} else { \
state->val = DTYPE##GetDatum(PAYLOAD(vars, i)); \
state->val_is_null = false; \
} \
} else { \
state->val_is_null = true; \
} \
} \
} \
} \
} \
PG_RETURN_POINTER(state); \
}
PG_FUNCTION_INFO_V1(vops_bool_input);
Datum vops_bool_input(PG_FUNCTION_ARGS)
{
char const* str = PG_GETARG_CSTRING(0);
vops_bool* result;
if (str == NULL) {
PG_RETURN_NULL();
}
result = (vops_bool*)palloc(sizeof(vops_bool));
if (sscanf(str, "{%llx,%llx,%llx}", (long64*)&result->hdr.null_mask, (long64*)&result->hdr.empty_mask, (long64*)&result->payload) != 2) {
elog(ERROR, "Failed to parse bool tile: '%s'", str);
}
PG_RETURN_POINTER(result);
}
PG_FUNCTION_INFO_V1(vops_bool_output);
Datum vops_bool_output(PG_FUNCTION_ARGS)
{
vops_bool* tile = (vops_bool*)PG_GETARG_POINTER(0);
PG_RETURN_CSTRING(psprintf("{%llx,%llx,%llx}",
(long64)tile->hdr.null_mask, (long64)tile->hdr.empty_mask, (long64)tile->payload));
}
PG_FUNCTION_INFO_V1(vops_filter);
Datum vops_filter(PG_FUNCTION_ARGS)
{
if (PG_ARGISNULL(0)) {
filter_mask = 0;
} else {
vops_bool* result = (vops_bool*)PG_GETARG_POINTER(0);
filter_mask = result->payload & ~result->hdr.empty_mask & ~result->hdr.null_mask;
}
PG_RETURN_BOOL(filter_mask != 0);
}
PG_FUNCTION_INFO_V1(vops_bool_not);
Datum vops_bool_not(PG_FUNCTION_ARGS)
{
vops_bool* opd = (vops_bool*)PG_GETARG_POINTER(0);
vops_bool* result = (vops_bool*)palloc(sizeof(vops_bool));
result->payload = ~opd->payload;
result->hdr = opd->hdr;
PG_RETURN_POINTER(result);
}
BOOL_BIN_OP(or,|)
BOOL_BIN_OP(and,&)
FIRST_AGG(bool,BOOL,BOOL_PAYLOAD)
LAST_AGG(bool,BOOL,BOOL_PAYLOAD)
FIRST_FUNC(bool,Bool,first,<,BOOL_PAYLOAD)
FIRST_FUNC(bool,Bool,last,>,BOOL_PAYLOAD)
PG_FUNCTION_INFO_V1(vops_count_accumulate);
Datum vops_count_accumulate(PG_FUNCTION_ARGS)
{
vops_tile_hdr* opd = (vops_tile_hdr*)PG_GETARG_POINTER(1);
int64 count = PG_GETARG_INT64(0);
uint64 mask = filter_mask & ~opd->empty_mask;
int i;
for (i = 0; i < TILE_SIZE; i++) {
if (mask & ((uint64)1 << i)) {
count += 1;
}
}
PG_RETURN_INT64(count);
}
PG_FUNCTION_INFO_V1(vops_count_any_accumulate);
Datum vops_count_any_accumulate(PG_FUNCTION_ARGS)
{
vops_tile_hdr* opd = (vops_tile_hdr*)PG_GETARG_POINTER(1);
int64 count = PG_GETARG_INT64(0);
uint64 mask = filter_mask & ~opd->null_mask & ~opd->empty_mask;
int i;
for (i = 0; i < TILE_SIZE; i++) {
if (mask & ((uint64)1 << i)) {
count += 1;