Line data Source code
1 : /*
2 : * contrib/btree_gist/btree_macaddr8.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/rel.h"
11 : #include "utils/sortsupport.h"
12 :
13 : typedef struct
14 : {
15 : macaddr8 lower;
16 : macaddr8 upper;
17 : /* make struct size = sizeof(gbtreekey16) */
18 : } mac8KEY;
19 :
20 : /* GiST support functions */
21 0 : PG_FUNCTION_INFO_V1(gbt_macad8_compress);
22 0 : PG_FUNCTION_INFO_V1(gbt_macad8_fetch);
23 0 : PG_FUNCTION_INFO_V1(gbt_macad8_union);
24 0 : PG_FUNCTION_INFO_V1(gbt_macad8_picksplit);
25 0 : PG_FUNCTION_INFO_V1(gbt_macad8_consistent);
26 0 : PG_FUNCTION_INFO_V1(gbt_macad8_penalty);
27 0 : PG_FUNCTION_INFO_V1(gbt_macad8_same);
28 0 : PG_FUNCTION_INFO_V1(gbt_macad8_sortsupport);
29 :
30 : static bool
31 0 : gbt_macad8gt(const void *a, const void *b, FmgrInfo *flinfo)
32 : {
33 0 : return DatumGetBool(DirectFunctionCall2(macaddr8_gt, PointerGetDatum(a), PointerGetDatum(b)));
34 : }
35 : static bool
36 0 : gbt_macad8ge(const void *a, const void *b, FmgrInfo *flinfo)
37 : {
38 0 : return DatumGetBool(DirectFunctionCall2(macaddr8_ge, PointerGetDatum(a), PointerGetDatum(b)));
39 : }
40 :
41 : static bool
42 0 : gbt_macad8eq(const void *a, const void *b, FmgrInfo *flinfo)
43 : {
44 0 : return DatumGetBool(DirectFunctionCall2(macaddr8_eq, PointerGetDatum(a), PointerGetDatum(b)));
45 : }
46 :
47 : static bool
48 0 : gbt_macad8le(const void *a, const void *b, FmgrInfo *flinfo)
49 : {
50 0 : return DatumGetBool(DirectFunctionCall2(macaddr8_le, PointerGetDatum(a), PointerGetDatum(b)));
51 : }
52 :
53 : static bool
54 0 : gbt_macad8lt(const void *a, const void *b, FmgrInfo *flinfo)
55 : {
56 0 : return DatumGetBool(DirectFunctionCall2(macaddr8_lt, PointerGetDatum(a), PointerGetDatum(b)));
57 : }
58 :
59 :
60 : static int
61 0 : gbt_macad8key_cmp(const void *a, const void *b, FmgrInfo *flinfo)
62 : {
63 0 : mac8KEY *ia = (mac8KEY *) (((const Nsrt *) a)->t);
64 0 : mac8KEY *ib = (mac8KEY *) (((const Nsrt *) b)->t);
65 0 : int res;
66 :
67 0 : res = DatumGetInt32(DirectFunctionCall2(macaddr8_cmp, Macaddr8PGetDatum(&ia->lower), Macaddr8PGetDatum(&ib->lower)));
68 0 : if (res == 0)
69 0 : return DatumGetInt32(DirectFunctionCall2(macaddr8_cmp, Macaddr8PGetDatum(&ia->upper), Macaddr8PGetDatum(&ib->upper)));
70 :
71 0 : return res;
72 0 : }
73 :
74 :
75 : static const gbtree_ninfo tinfo =
76 : {
77 : gbt_t_macad8,
78 : sizeof(macaddr8),
79 : 16, /* sizeof(gbtreekey16) */
80 : gbt_macad8gt,
81 : gbt_macad8ge,
82 : gbt_macad8eq,
83 : gbt_macad8le,
84 : gbt_macad8lt,
85 : gbt_macad8key_cmp,
86 : NULL
87 : };
88 :
89 :
90 : /**************************************************
91 : * GiST support functions
92 : **************************************************/
93 :
94 : static uint64
95 0 : mac8_2_uint64(macaddr8 *m)
96 : {
97 0 : unsigned char *mi = (unsigned char *) m;
98 0 : uint64 res = 0;
99 0 : int i;
100 :
101 0 : for (i = 0; i < 8; i++)
102 0 : res += (((uint64) mi[i]) << ((uint64) ((7 - i) * 8)));
103 0 : return res;
104 0 : }
105 :
106 : Datum
107 0 : gbt_macad8_compress(PG_FUNCTION_ARGS)
108 : {
109 0 : GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
110 :
111 0 : PG_RETURN_POINTER(gbt_num_compress(entry, &tinfo));
112 0 : }
113 :
114 : Datum
115 0 : gbt_macad8_fetch(PG_FUNCTION_ARGS)
116 : {
117 0 : GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
118 :
119 0 : PG_RETURN_POINTER(gbt_num_fetch(entry, &tinfo));
120 0 : }
121 :
122 : Datum
123 0 : gbt_macad8_consistent(PG_FUNCTION_ARGS)
124 : {
125 0 : GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
126 0 : macaddr8 *query = (macaddr8 *) PG_GETARG_POINTER(1);
127 0 : StrategyNumber strategy = (StrategyNumber) PG_GETARG_UINT16(2);
128 : #ifdef NOT_USED
129 : Oid subtype = PG_GETARG_OID(3);
130 : #endif
131 0 : bool *recheck = (bool *) PG_GETARG_POINTER(4);
132 0 : mac8KEY *kkk = (mac8KEY *) DatumGetPointer(entry->key);
133 0 : GBT_NUMKEY_R key;
134 :
135 : /* All cases served by this function are exact */
136 0 : *recheck = false;
137 :
138 0 : key.lower = (GBT_NUMKEY *) &kkk->lower;
139 0 : key.upper = (GBT_NUMKEY *) &kkk->upper;
140 :
141 0 : PG_RETURN_BOOL(gbt_num_consistent(&key, query, &strategy,
142 : GIST_LEAF(entry), &tinfo, fcinfo->flinfo));
143 0 : }
144 :
145 : Datum
146 0 : gbt_macad8_union(PG_FUNCTION_ARGS)
147 : {
148 0 : GistEntryVector *entryvec = (GistEntryVector *) PG_GETARG_POINTER(0);
149 0 : void *out = palloc0(sizeof(mac8KEY));
150 :
151 0 : *(int *) PG_GETARG_POINTER(1) = sizeof(mac8KEY);
152 0 : PG_RETURN_POINTER(gbt_num_union(out, entryvec, &tinfo, fcinfo->flinfo));
153 0 : }
154 :
155 : Datum
156 0 : gbt_macad8_penalty(PG_FUNCTION_ARGS)
157 : {
158 0 : mac8KEY *origentry = (mac8KEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(0))->key);
159 0 : mac8KEY *newentry = (mac8KEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(1))->key);
160 0 : float *result = (float *) PG_GETARG_POINTER(2);
161 0 : uint64 iorg[2],
162 : inew[2];
163 :
164 0 : iorg[0] = mac8_2_uint64(&origentry->lower);
165 0 : iorg[1] = mac8_2_uint64(&origentry->upper);
166 0 : inew[0] = mac8_2_uint64(&newentry->lower);
167 0 : inew[1] = mac8_2_uint64(&newentry->upper);
168 :
169 0 : penalty_num(result, iorg[0], iorg[1], inew[0], inew[1]);
170 :
171 0 : PG_RETURN_POINTER(result);
172 0 : }
173 :
174 : Datum
175 0 : gbt_macad8_picksplit(PG_FUNCTION_ARGS)
176 : {
177 0 : PG_RETURN_POINTER(gbt_num_picksplit((GistEntryVector *) PG_GETARG_POINTER(0),
178 : (GIST_SPLITVEC *) PG_GETARG_POINTER(1),
179 : &tinfo, fcinfo->flinfo));
180 : }
181 :
182 : Datum
183 0 : gbt_macad8_same(PG_FUNCTION_ARGS)
184 : {
185 0 : mac8KEY *b1 = (mac8KEY *) PG_GETARG_POINTER(0);
186 0 : mac8KEY *b2 = (mac8KEY *) PG_GETARG_POINTER(1);
187 0 : bool *result = (bool *) PG_GETARG_POINTER(2);
188 :
189 0 : *result = gbt_num_same((void *) b1, (void *) b2, &tinfo, fcinfo->flinfo);
190 0 : PG_RETURN_POINTER(result);
191 0 : }
192 :
193 : static int
194 0 : gbt_macaddr8_ssup_cmp(Datum x, Datum y, SortSupport ssup)
195 : {
196 0 : mac8KEY *arg1 = (mac8KEY *) DatumGetPointer(x);
197 0 : mac8KEY *arg2 = (mac8KEY *) DatumGetPointer(y);
198 :
199 : /* for leaf items we expect lower == upper, so only compare lower */
200 0 : return DatumGetInt32(DirectFunctionCall2(macaddr8_cmp,
201 : Macaddr8PGetDatum(&arg1->lower),
202 : Macaddr8PGetDatum(&arg2->lower)));
203 0 : }
204 :
205 : Datum
206 0 : gbt_macad8_sortsupport(PG_FUNCTION_ARGS)
207 : {
208 0 : SortSupport ssup = (SortSupport) PG_GETARG_POINTER(0);
209 :
210 0 : ssup->comparator = gbt_macaddr8_ssup_cmp;
211 0 : ssup->ssup_extra = NULL;
212 :
213 0 : PG_RETURN_VOID();
214 0 : }
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