Line data    Source code

       1             : /*
       2             :  * contrib/btree_gist/btree_macaddr.c
       3             :  */
       4             : #include "postgres.h"
       5             : 
       6             : #include "btree_gist.h"
       7             : #include "btree_utils_num.h"
       8             : #include "utils/fmgrprotos.h"
       9             : #include "utils/inet.h"
      10             : #include "utils/sortsupport.h"
      11             : 
      12             : typedef struct
      13             : {
      14             :     macaddr     lower;
      15             :     macaddr     upper;
      16             :     char        pad[4];         /* make struct size = sizeof(gbtreekey16) */
      17             : } macKEY;
      18             : 
      19             : /* GiST support functions */
      20           4 : PG_FUNCTION_INFO_V1(gbt_macad_compress);
      21           4 : PG_FUNCTION_INFO_V1(gbt_macad_fetch);
      22           4 : PG_FUNCTION_INFO_V1(gbt_macad_union);
      23           4 : PG_FUNCTION_INFO_V1(gbt_macad_picksplit);
      24           4 : PG_FUNCTION_INFO_V1(gbt_macad_consistent);
      25           4 : PG_FUNCTION_INFO_V1(gbt_macad_penalty);
      26           4 : PG_FUNCTION_INFO_V1(gbt_macad_same);
      27           4 : PG_FUNCTION_INFO_V1(gbt_macaddr_sortsupport);
      28             : 
      29             : 
      30             : static bool
      31        4186 : gbt_macadgt(const void *a, const void *b, FmgrInfo *flinfo)
      32             : {
      33        4186 :     return DatumGetBool(DirectFunctionCall2(macaddr_gt, PointerGetDatum(a), PointerGetDatum(b)));
      34             : }
      35             : static bool
      36         324 : gbt_macadge(const void *a, const void *b, FmgrInfo *flinfo)
      37             : {
      38         324 :     return DatumGetBool(DirectFunctionCall2(macaddr_ge, PointerGetDatum(a), PointerGetDatum(b)));
      39             : }
      40             : 
      41             : static bool
      42         300 : gbt_macadeq(const void *a, const void *b, FmgrInfo *flinfo)
      43             : {
      44         300 :     return DatumGetBool(DirectFunctionCall2(macaddr_eq, PointerGetDatum(a), PointerGetDatum(b)));
      45             : }
      46             : 
      47             : static bool
      48        1226 : gbt_macadle(const void *a, const void *b, FmgrInfo *flinfo)
      49             : {
      50        1226 :     return DatumGetBool(DirectFunctionCall2(macaddr_le, PointerGetDatum(a), PointerGetDatum(b)));
      51             : }
      52             : 
      53             : static bool
      54        4786 : gbt_macadlt(const void *a, const void *b, FmgrInfo *flinfo)
      55             : {
      56        4786 :     return DatumGetBool(DirectFunctionCall2(macaddr_lt, PointerGetDatum(a), PointerGetDatum(b)));
      57             : }
      58             : 
      59             : 
      60             : static int
      61        2394 : gbt_macadkey_cmp(const void *a, const void *b, FmgrInfo *flinfo)
      62             : {
      63        2394 :     macKEY     *ia = (macKEY *) (((const Nsrt *) a)->t);
      64        2394 :     macKEY     *ib = (macKEY *) (((const Nsrt *) b)->t);
      65             :     int         res;
      66             : 
      67        2394 :     res = DatumGetInt32(DirectFunctionCall2(macaddr_cmp, MacaddrPGetDatum(&ia->lower), MacaddrPGetDatum(&ib->lower)));
      68        2394 :     if (res == 0)
      69        1800 :         return DatumGetInt32(DirectFunctionCall2(macaddr_cmp, MacaddrPGetDatum(&ia->upper), MacaddrPGetDatum(&ib->upper)));
      70             : 
      71         594 :     return res;
      72             : }
      73             : 
      74             : 
      75             : static const gbtree_ninfo tinfo =
      76             : {
      77             :     gbt_t_macad,
      78             :     sizeof(macaddr),
      79             :     16,                         /* sizeof(gbtreekey16) */
      80             :     gbt_macadgt,
      81             :     gbt_macadge,
      82             :     gbt_macadeq,
      83             :     gbt_macadle,
      84             :     gbt_macadlt,
      85             :     gbt_macadkey_cmp,
      86             :     NULL
      87             : };
      88             : 
      89             : 
      90             : /**************************************************
      91             :  * GiST support functions
      92             :  **************************************************/
      93             : 
      94             : static uint64
      95           0 : mac_2_uint64(macaddr *m)
      96             : {
      97           0 :     unsigned char *mi = (unsigned char *) m;
      98           0 :     uint64      res = 0;
      99             :     int         i;
     100             : 
     101           0 :     for (i = 0; i < 6; i++)
     102           0 :         res += (((uint64) mi[i]) << ((uint64) ((5 - i) * 8)));
     103           0 :     return res;
     104             : }
     105             : 
     106             : Datum
     107        1208 : gbt_macad_compress(PG_FUNCTION_ARGS)
     108             : {
     109        1208 :     GISTENTRY  *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
     110             : 
     111        1208 :     PG_RETURN_POINTER(gbt_num_compress(entry, &tinfo));
     112             : }
     113             : 
     114             : Datum
     115          16 : gbt_macad_fetch(PG_FUNCTION_ARGS)
     116             : {
     117          16 :     GISTENTRY  *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
     118             : 
     119          16 :     PG_RETURN_POINTER(gbt_num_fetch(entry, &tinfo));
     120             : }
     121             : 
     122             : Datum
     123        3648 : gbt_macad_consistent(PG_FUNCTION_ARGS)
     124             : {
     125        3648 :     GISTENTRY  *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
     126        3648 :     macaddr    *query = (macaddr *) PG_GETARG_POINTER(1);
     127        3648 :     StrategyNumber strategy = (StrategyNumber) PG_GETARG_UINT16(2);
     128             : 
     129             :     /* Oid      subtype = PG_GETARG_OID(3); */
     130        3648 :     bool       *recheck = (bool *) PG_GETARG_POINTER(4);
     131        3648 :     macKEY     *kkk = (macKEY *) DatumGetPointer(entry->key);
     132             :     GBT_NUMKEY_R key;
     133             : 
     134             :     /* All cases served by this function are exact */
     135        3648 :     *recheck = false;
     136             : 
     137        3648 :     key.lower = (GBT_NUMKEY *) &kkk->lower;
     138        3648 :     key.upper = (GBT_NUMKEY *) &kkk->upper;
     139             : 
     140        3648 :     PG_RETURN_BOOL(gbt_num_consistent(&key, query, &strategy,
     141             :                                       GIST_LEAF(entry), &tinfo, fcinfo->flinfo));
     142             : }
     143             : 
     144             : 
     145             : Datum
     146           2 : gbt_macad_union(PG_FUNCTION_ARGS)
     147             : {
     148           2 :     GistEntryVector *entryvec = (GistEntryVector *) PG_GETARG_POINTER(0);
     149           2 :     void       *out = palloc0(sizeof(macKEY));
     150             : 
     151           2 :     *(int *) PG_GETARG_POINTER(1) = sizeof(macKEY);
     152           2 :     PG_RETURN_POINTER(gbt_num_union(out, entryvec, &tinfo, fcinfo->flinfo));
     153             : }
     154             : 
     155             : 
     156             : Datum
     157           0 : gbt_macad_penalty(PG_FUNCTION_ARGS)
     158             : {
     159           0 :     macKEY     *origentry = (macKEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(0))->key);
     160           0 :     macKEY     *newentry = (macKEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(1))->key);
     161           0 :     float      *result = (float *) PG_GETARG_POINTER(2);
     162             :     uint64      iorg[2],
     163             :                 inew[2];
     164             : 
     165           0 :     iorg[0] = mac_2_uint64(&origentry->lower);
     166           0 :     iorg[1] = mac_2_uint64(&origentry->upper);
     167           0 :     inew[0] = mac_2_uint64(&newentry->lower);
     168           0 :     inew[1] = mac_2_uint64(&newentry->upper);
     169             : 
     170           0 :     penalty_num(result, iorg[0], iorg[1], inew[0], inew[1]);
     171             : 
     172           0 :     PG_RETURN_POINTER(result);
     173             : }
     174             : 
     175             : Datum
     176           6 : gbt_macad_picksplit(PG_FUNCTION_ARGS)
     177             : {
     178           6 :     PG_RETURN_POINTER(gbt_num_picksplit((GistEntryVector *) PG_GETARG_POINTER(0),
     179             :                                         (GIST_SPLITVEC *) PG_GETARG_POINTER(1),
     180             :                                         &tinfo, fcinfo->flinfo));
     181             : }
     182             : 
     183             : Datum
     184           0 : gbt_macad_same(PG_FUNCTION_ARGS)
     185             : {
     186           0 :     macKEY     *b1 = (macKEY *) PG_GETARG_POINTER(0);
     187           0 :     macKEY     *b2 = (macKEY *) PG_GETARG_POINTER(1);
     188           0 :     bool       *result = (bool *) PG_GETARG_POINTER(2);
     189             : 
     190           0 :     *result = gbt_num_same((void *) b1, (void *) b2, &tinfo, fcinfo->flinfo);
     191           0 :     PG_RETURN_POINTER(result);
     192             : }
     193             : 
     194             : static int
     195       11578 : gbt_macaddr_ssup_cmp(Datum x, Datum y, SortSupport ssup)
     196             : {
     197       11578 :     macKEY     *arg1 = (macKEY *) DatumGetPointer(x);
     198       11578 :     macKEY     *arg2 = (macKEY *) DatumGetPointer(y);
     199             : 
     200             :     /* for leaf items we expect lower == upper, so only compare lower */
     201       11578 :     return DatumGetInt32(DirectFunctionCall2(macaddr_cmp,
     202             :                                              MacaddrPGetDatum(&arg1->lower),
     203             :                                              MacaddrPGetDatum(&arg2->lower)));
     204             : }
     205             : 
     206             : Datum
     207           2 : gbt_macaddr_sortsupport(PG_FUNCTION_ARGS)
     208             : {
     209           2 :     SortSupport ssup = (SortSupport) PG_GETARG_POINTER(0);
     210             : 
     211           2 :     ssup->comparator = gbt_macaddr_ssup_cmp;
     212           2 :     ssup->ssup_extra = NULL;
     213             : 
     214           2 :     PG_RETURN_VOID();
     215             : }