diff options
Diffstat (limited to 'contrib/btree_gist/btree_macaddr.c')
| -rw-r--r-- | contrib/btree_gist/btree_macaddr.c | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/contrib/btree_gist/btree_macaddr.c b/contrib/btree_gist/btree_macaddr.c new file mode 100644 index 0000000..1729052 --- /dev/null +++ b/contrib/btree_gist/btree_macaddr.c @@ -0,0 +1,196 @@ +/* + * contrib/btree_gist/btree_macaddr.c + */ +#include "postgres.h" + +#include "btree_gist.h" +#include "btree_utils_num.h" +#include "utils/builtins.h" +#include "utils/inet.h" + +typedef struct +{ + macaddr lower; + macaddr upper; + char pad[4]; /* make struct size = sizeof(gbtreekey16) */ +} macKEY; + +/* +** OID ops +*/ +PG_FUNCTION_INFO_V1(gbt_macad_compress); +PG_FUNCTION_INFO_V1(gbt_macad_fetch); +PG_FUNCTION_INFO_V1(gbt_macad_union); +PG_FUNCTION_INFO_V1(gbt_macad_picksplit); +PG_FUNCTION_INFO_V1(gbt_macad_consistent); +PG_FUNCTION_INFO_V1(gbt_macad_penalty); +PG_FUNCTION_INFO_V1(gbt_macad_same); + + +static bool +gbt_macadgt(const void *a, const void *b, FmgrInfo *flinfo) +{ + return DatumGetBool(DirectFunctionCall2(macaddr_gt, PointerGetDatum(a), PointerGetDatum(b))); +} +static bool +gbt_macadge(const void *a, const void *b, FmgrInfo *flinfo) +{ + return DatumGetBool(DirectFunctionCall2(macaddr_ge, PointerGetDatum(a), PointerGetDatum(b))); +} + +static bool +gbt_macadeq(const void *a, const void *b, FmgrInfo *flinfo) +{ + return DatumGetBool(DirectFunctionCall2(macaddr_eq, PointerGetDatum(a), PointerGetDatum(b))); +} + +static bool +gbt_macadle(const void *a, const void *b, FmgrInfo *flinfo) +{ + return DatumGetBool(DirectFunctionCall2(macaddr_le, PointerGetDatum(a), PointerGetDatum(b))); +} + +static bool +gbt_macadlt(const void *a, const void *b, FmgrInfo *flinfo) +{ + return DatumGetBool(DirectFunctionCall2(macaddr_lt, PointerGetDatum(a), PointerGetDatum(b))); +} + + +static int +gbt_macadkey_cmp(const void *a, const void *b, FmgrInfo *flinfo) +{ + macKEY *ia = (macKEY *) (((const Nsrt *) a)->t); + macKEY *ib = (macKEY *) (((const Nsrt *) b)->t); + int res; + + res = DatumGetInt32(DirectFunctionCall2(macaddr_cmp, MacaddrPGetDatum(&ia->lower), MacaddrPGetDatum(&ib->lower))); + if (res == 0) + return DatumGetInt32(DirectFunctionCall2(macaddr_cmp, MacaddrPGetDatum(&ia->upper), MacaddrPGetDatum(&ib->upper))); + + return res; +} + + +static const gbtree_ninfo tinfo = +{ + gbt_t_macad, + sizeof(macaddr), + 16, /* sizeof(gbtreekey16) */ + gbt_macadgt, + gbt_macadge, + gbt_macadeq, + gbt_macadle, + gbt_macadlt, + gbt_macadkey_cmp, + NULL +}; + + +/************************************************** + * macaddr ops + **************************************************/ + + + +static uint64 +mac_2_uint64(macaddr *m) +{ + unsigned char *mi = (unsigned char *) m; + uint64 res = 0; + int i; + + for (i = 0; i < 6; i++) + res += (((uint64) mi[i]) << ((uint64) ((5 - i) * 8))); + return res; +} + + + +Datum +gbt_macad_compress(PG_FUNCTION_ARGS) +{ + GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0); + + PG_RETURN_POINTER(gbt_num_compress(entry, &tinfo)); +} + +Datum +gbt_macad_fetch(PG_FUNCTION_ARGS) +{ + GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0); + + PG_RETURN_POINTER(gbt_num_fetch(entry, &tinfo)); +} + +Datum +gbt_macad_consistent(PG_FUNCTION_ARGS) +{ + GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0); + macaddr *query = (macaddr *) PG_GETARG_POINTER(1); + StrategyNumber strategy = (StrategyNumber) PG_GETARG_UINT16(2); + + /* Oid subtype = PG_GETARG_OID(3); */ + bool *recheck = (bool *) PG_GETARG_POINTER(4); + macKEY *kkk = (macKEY *) DatumGetPointer(entry->key); + GBT_NUMKEY_R key; + + /* All cases served by this function are exact */ + *recheck = false; + + key.lower = (GBT_NUMKEY *) &kkk->lower; + key.upper = (GBT_NUMKEY *) &kkk->upper; + + PG_RETURN_BOOL(gbt_num_consistent(&key, (void *) query, &strategy, + GIST_LEAF(entry), &tinfo, fcinfo->flinfo)); +} + + +Datum +gbt_macad_union(PG_FUNCTION_ARGS) +{ + GistEntryVector *entryvec = (GistEntryVector *) PG_GETARG_POINTER(0); + void *out = palloc0(sizeof(macKEY)); + + *(int *) PG_GETARG_POINTER(1) = sizeof(macKEY); + PG_RETURN_POINTER(gbt_num_union((void *) out, entryvec, &tinfo, fcinfo->flinfo)); +} + + +Datum +gbt_macad_penalty(PG_FUNCTION_ARGS) +{ + macKEY *origentry = (macKEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(0))->key); + macKEY *newentry = (macKEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(1))->key); + float *result = (float *) PG_GETARG_POINTER(2); + uint64 iorg[2], + inew[2]; + + iorg[0] = mac_2_uint64(&origentry->lower); + iorg[1] = mac_2_uint64(&origentry->upper); + inew[0] = mac_2_uint64(&newentry->lower); + inew[1] = mac_2_uint64(&newentry->upper); + + penalty_num(result, iorg[0], iorg[1], inew[0], inew[1]); + + PG_RETURN_POINTER(result); +} + +Datum +gbt_macad_picksplit(PG_FUNCTION_ARGS) +{ + PG_RETURN_POINTER(gbt_num_picksplit((GistEntryVector *) PG_GETARG_POINTER(0), + (GIST_SPLITVEC *) PG_GETARG_POINTER(1), + &tinfo, fcinfo->flinfo)); +} + +Datum +gbt_macad_same(PG_FUNCTION_ARGS) +{ + macKEY *b1 = (macKEY *) PG_GETARG_POINTER(0); + macKEY *b2 = (macKEY *) PG_GETARG_POINTER(1); + bool *result = (bool *) PG_GETARG_POINTER(2); + + *result = gbt_num_same((void *) b1, (void *) b2, &tinfo, fcinfo->flinfo); + PG_RETURN_POINTER(result); +} |