PostgreSQL Source Code git master
Functions
_int_tool.c File Reference
#include "postgres.h"
#include <limits.h>
#include "_int.h"
#include "catalog/pg_type.h"
#include "common/int.h"
#include "lib/qunique.h"
Include dependency graph for _int_tool.c:

Go to the source code of this file.

Functions

bool inner_int_contains (ArrayType *a, ArrayType *b)
 
bool inner_int_overlap (ArrayType *a, ArrayType *b)
 
ArrayType * inner_int_union (ArrayType *a, ArrayType *b)
 
ArrayType * inner_int_inter (ArrayType *a, ArrayType *b)
 
void rt__int_size (ArrayType *a, float *size)
 
static int isort_cmp (const void *a, const void *b, void *arg)
 
bool isort (int32 *a, int len)
 
ArrayType * new_intArrayType (int num)
 
ArrayType * resize_intArrayType (ArrayType *a, int num)
 
ArrayType * copy_intArrayType (ArrayType *a)
 
int internal_size (int *a, int len)
 
ArrayType * _int_unique (ArrayType *r)
 
void gensign (BITVECP sign, int *a, int len, int siglen)
 
int32 intarray_match_first (ArrayType *a, int32 elem)
 
ArrayType * intarray_add_elem (ArrayType *a, int32 elem)
 
ArrayType * intarray_concat_arrays (ArrayType *a, ArrayType *b)
 
ArrayType * int_to_intset (int32 elem)
 
int compASC (const void *a, const void *b)
 
int compDESC (const void *a, const void *b)
 

Function Documentation

◆ _int_unique()

ArrayType * _int_unique ( ArrayType *  r)

Definition at line 311 of file _int_tool.c.

312{
313 int num = ARRNELEMS(r);
314 bool duplicates_found; /* not used */
315
316 num = qunique_arg(ARRPTR(r), num, sizeof(int), isort_cmp,
317 &duplicates_found);
318
319 return resize_intArrayType(r, num);
320}
resize_intArrayType
ArrayType * resize_intArrayType(ArrayType *a, int num)
Definition: _int_tool.c:250
isort_cmp
static int isort_cmp(const void *a, const void *b, void *arg)
Definition: _int_tool.c:191
ARRNELEMS
#define ARRNELEMS(x)
Definition: cube.c:26
ARRPTR
#define ARRPTR(x)
Definition: cube.c:25
qunique_arg
static size_t qunique_arg(void *array, size_t elements, size_t width, int(*compare)(const void *, const void *, void *), void *arg)
Definition: qunique.h:46

References ARRNELEMS, ARRPTR, isort_cmp(), qunique_arg(), and resize_intArrayType().

Referenced by g_int_union(), inner_int_union(), intset_subtract(), intset_union_elem(), and uniq().

◆ compASC()

int compASC ( const void *  a,
const void *  b 
)

Definition at line 398 of file _int_tool.c.

399{
400 return pg_cmp_s32(*(const int32 *) a, *(const int32 *) b);
401}
int32
int32_t int32
Definition: c.h:484
pg_cmp_s32
static int pg_cmp_s32(int32 a, int32 b)
Definition: int.h:646
b
int b
Definition: isn.c:69
a
int a
Definition: isn.c:68

References a, b, and pg_cmp_s32().

◆ compDESC()

int compDESC ( const void *  a,
const void *  b 
)

Definition at line 404 of file _int_tool.c.

405{
406 return pg_cmp_s32(*(const int32 *) b, *(const int32 *) a);
407}

References a, b, and pg_cmp_s32().

◆ copy_intArrayType()

ArrayType * copy_intArrayType ( ArrayType *  a)

Definition at line 281 of file _int_tool.c.

282{
283 ArrayType *r;
284 int n = ARRNELEMS(a);
285
286 r = new_intArrayType(n);
287 memcpy(ARRPTR(r), ARRPTR(a), n * sizeof(int32));
288 return r;
289}
new_intArrayType
ArrayType * new_intArrayType(int num)
Definition: _int_tool.c:222

References a, ARRNELEMS, ARRPTR, and new_intArrayType().

Referenced by g_int_picksplit(), and inner_int_union().

◆ gensign()

void gensign ( BITVECP  sign,
int *  a,
int  len,
int  siglen 
)

Definition at line 323 of file _int_tool.c.

324{
325 int i;
326
327 /* we assume that the sign vector is previously zeroed */
328 for (i = 0; i < len; i++)
329 {
330 HASH(sign, *a, siglen);
331 a++;
332 }
333}
HASH
#define HASH(sign, val, siglen)
Definition: hstore_gist.c:46
sign
char sign
Definition: informix.c:693
i
int i
Definition: isn.c:72
len
const void size_t len
Definition: pg_crc32c_sse42.c:25

References a, HASH, i, len, and sign.

◆ inner_int_contains()

bool inner_int_contains ( ArrayType *  a,
ArrayType *  b 
)

Definition at line 15 of file _int_tool.c.

16{
17 int na,
18 nb;
19 int i,
20 j,
21 n;
22 int *da,
23 *db;
24
25 na = ARRNELEMS(a);
26 nb = ARRNELEMS(b);
27 da = ARRPTR(a);
28 db = ARRPTR(b);
29
30 i = j = n = 0;
31 while (i < na && j < nb)
32 {
33 if (da[i] < db[j])
34 i++;
35 else if (da[i] == db[j])
36 {
37 n++;
38 i++;
39 j++;
40 }
41 else
42 break; /* db[j] is not in da */
43 }
44
45 return (n == nb);
46}
j
int j
Definition: isn.c:73

References a, ARRNELEMS, ARRPTR, b, i, and j.

Referenced by _int_contains(), and g_int_consistent().

◆ inner_int_inter()

ArrayType * inner_int_inter ( ArrayType *  a,
ArrayType *  b 
)

Definition at line 136 of file _int_tool.c.

137{
138 ArrayType *r;
139 int na,
140 nb;
141 int *da,
142 *db,
143 *dr;
144 int i,
145 j,
146 k;
147
148 if (ARRISEMPTY(a) || ARRISEMPTY(b))
149 return new_intArrayType(0);
150
151 na = ARRNELEMS(a);
152 nb = ARRNELEMS(b);
153 da = ARRPTR(a);
154 db = ARRPTR(b);
155 r = new_intArrayType(Min(na, nb));
156 dr = ARRPTR(r);
157
158 i = j = k = 0;
159 while (i < na && j < nb)
160 {
161 if (da[i] < db[j])
162 i++;
163 else if (da[i] == db[j])
164 {
165 if (k == 0 || dr[k - 1] != db[j])
166 dr[k++] = db[j];
167 i++;
168 j++;
169 }
170 else
171 j++;
172 }
173
174 if (k == 0)
175 {
176 pfree(r);
177 return new_intArrayType(0);
178 }
179 else
180 return resize_intArrayType(r, k);
181}
ARRISEMPTY
#define ARRISEMPTY(x)
Definition: _int.h:38
Min
#define Min(x, y)
Definition: c.h:961
pfree
void pfree(void *pointer)
Definition: mcxt.c:1521

References a, ARRISEMPTY, ARRNELEMS, ARRPTR, b, i, j, Min, new_intArrayType(), pfree(), and resize_intArrayType().

Referenced by _int_inter(), and g_int_picksplit().

◆ inner_int_overlap()

bool inner_int_overlap ( ArrayType *  a,
ArrayType *  b 
)

Definition at line 50 of file _int_tool.c.

51{
52 int na,
53 nb;
54 int i,
55 j;
56 int *da,
57 *db;
58
59 na = ARRNELEMS(a);
60 nb = ARRNELEMS(b);
61 da = ARRPTR(a);
62 db = ARRPTR(b);
63
64 i = j = 0;
65 while (i < na && j < nb)
66 {
67 if (da[i] < db[j])
68 i++;
69 else if (da[i] == db[j])
70 return true;
71 else
72 j++;
73 }
74
75 return false;
76}

References a, ARRNELEMS, ARRPTR, b, i, and j.

Referenced by _int_overlap(), and g_int_consistent().

◆ inner_int_union()

ArrayType * inner_int_union ( ArrayType *  a,
ArrayType *  b 
)

Definition at line 79 of file _int_tool.c.

80{
81 ArrayType *r = NULL;
82
83 CHECKARRVALID(a);
84 CHECKARRVALID(b);
85
86 if (ARRISEMPTY(a) && ARRISEMPTY(b))
87 return new_intArrayType(0);
88 if (ARRISEMPTY(a))
89 r = copy_intArrayType(b);
90 if (ARRISEMPTY(b))
91 r = copy_intArrayType(a);
92
93 if (!r)
94 {
95 int na = ARRNELEMS(a),
96 nb = ARRNELEMS(b);
97 int *da = ARRPTR(a),
98 *db = ARRPTR(b);
99 int i,
100 j,
101 *dr;
102
103 r = new_intArrayType(na + nb);
104 dr = ARRPTR(r);
105
106 /* union */
107 i = j = 0;
108 while (i < na && j < nb)
109 {
110 if (da[i] == db[j])
111 {
112 *dr++ = da[i++];
113 j++;
114 }
115 else if (da[i] < db[j])
116 *dr++ = da[i++];
117 else
118 *dr++ = db[j++];
119 }
120
121 while (i < na)
122 *dr++ = da[i++];
123 while (j < nb)
124 *dr++ = db[j++];
125
126 r = resize_intArrayType(r, dr - ARRPTR(r));
127 }
128
129 if (ARRNELEMS(r) > 1)
130 r = _int_unique(r);
131
132 return r;
133}
CHECKARRVALID
#define CHECKARRVALID(x)
Definition: _int.h:30
copy_intArrayType
ArrayType * copy_intArrayType(ArrayType *a)
Definition: _int_tool.c:281
_int_unique
ArrayType * _int_unique(ArrayType *r)
Definition: _int_tool.c:311

References _int_unique(), a, ARRISEMPTY, ARRNELEMS, ARRPTR, b, CHECKARRVALID, copy_intArrayType(), i, j, new_intArrayType(), and resize_intArrayType().

Referenced by _int_union(), g_int_penalty(), and g_int_picksplit().

◆ int_to_intset()

ArrayType * int_to_intset ( int32  elem)

Definition at line 386 of file _int_tool.c.

387{
388 ArrayType *result;
389 int32 *aa;
390
391 result = new_intArrayType(1);
392 aa = ARRPTR(result);
393 aa[0] = elem;
394 return result;
395}

References ARRPTR, and new_intArrayType().

Referenced by intset().

◆ intarray_add_elem()

ArrayType * intarray_add_elem ( ArrayType *  a,
int32  elem 
)

Definition at line 352 of file _int_tool.c.

353{
354 ArrayType *result;
355 int32 *r;
356 int32 c;
357
358 CHECKARRVALID(a);
359 c = ARRNELEMS(a);
360 result = new_intArrayType(c + 1);
361 r = ARRPTR(result);
362 if (c > 0)
363 memcpy(r, ARRPTR(a), c * sizeof(int32));
364 r[c] = elem;
365 return result;
366}
c
char * c
Definition: preproc-cursor.c:31

References a, ARRNELEMS, ARRPTR, CHECKARRVALID, and new_intArrayType().

Referenced by intarray_push_elem(), and intset_union_elem().

◆ intarray_concat_arrays()

ArrayType * intarray_concat_arrays ( ArrayType *  a,
ArrayType *  b 
)

Definition at line 369 of file _int_tool.c.

370{
371 ArrayType *result;
372 int32 ac = ARRNELEMS(a);
373 int32 bc = ARRNELEMS(b);
374
375 CHECKARRVALID(a);
376 CHECKARRVALID(b);
377 result = new_intArrayType(ac + bc);
378 if (ac)
379 memcpy(ARRPTR(result), ARRPTR(a), ac * sizeof(int32));
380 if (bc)
381 memcpy(ARRPTR(result) + ac, ARRPTR(b), bc * sizeof(int32));
382 return result;
383}

References a, ARRNELEMS, ARRPTR, b, CHECKARRVALID, and new_intArrayType().

Referenced by intarray_push_array().

◆ intarray_match_first()

int32 intarray_match_first ( ArrayType *  a,
int32  elem 
)

Definition at line 336 of file _int_tool.c.

337{
338 int32 *aa,
339 c,
340 i;
341
342 CHECKARRVALID(a);
343 c = ARRNELEMS(a);
344 aa = ARRPTR(a);
345 for (i = 0; i < c; i++)
346 if (aa[i] == elem)
347 return (i + 1);
348 return 0;
349}

References a, ARRNELEMS, ARRPTR, CHECKARRVALID, and i.

Referenced by idx().

◆ internal_size()

int internal_size ( int *  a,
int  len 
)

Definition at line 293 of file _int_tool.c.

294{
295 int i;
296 int64 size = 0;
297
298 for (i = 0; i < len; i += 2)
299 {
300 if (!i || a[i] != a[i - 1]) /* do not count repeated range */
301 size += (int64) (a[i + 1]) - (int64) (a[i]) + 1;
302 }
303
304 if (size > (int64) INT_MAX || size < (int64) INT_MIN)
305 return -1; /* overflow */
306 return (int) size;
307}
int64
int64_t int64
Definition: c.h:485
size
static pg_noinline void Size size
Definition: slab.c:607

References a, i, len, and size.

Referenced by g_int_compress(), and g_int_decompress().

◆ isort()

bool isort ( int32 *  a,
int  len 
)

Definition at line 212 of file _int_tool.c.

213{
214 bool r = false;
215
216 qsort_arg(a, len, sizeof(int32), isort_cmp, &r);
217 return r;
218}
qsort_arg
void qsort_arg(void *base, size_t nel, size_t elsize, qsort_arg_comparator cmp, void *arg)

References a, isort_cmp(), len, and qsort_arg().

◆ isort_cmp()

static int isort_cmp ( const void *  a,
const void *  b,
void *  arg 
)
static

Definition at line 191 of file _int_tool.c.

192{
193 int32 aval = *((const int32 *) a);
194 int32 bval = *((const int32 *) b);
195
196 if (aval < bval)
197 return -1;
198 if (aval > bval)
199 return 1;
200
201 /*
202 * Report if we have any duplicates. If there are equal keys, qsort must
203 * compare them at some point, else it wouldn't know whether one should go
204 * before or after the other.
205 */
206 *((bool *) arg) = true;
207 return 0;
208}
arg
void * arg
Definition: pg_backup_utils.c:29

References a, arg, and b.

Referenced by _int_unique(), and isort().

◆ new_intArrayType()

ArrayType * new_intArrayType ( int  num)

Definition at line 222 of file _int_tool.c.

223{
224 ArrayType *r;
225 int nbytes;
226
227 /* if no elements, return a zero-dimensional array */
228 if (num <= 0)
229 {
230 Assert(num == 0);
231 r = construct_empty_array(INT4OID);
232 return r;
233 }
234
235 nbytes = ARR_OVERHEAD_NONULLS(1) + sizeof(int) * num;
236
237 r = (ArrayType *) palloc0(nbytes);
238
239 SET_VARSIZE(r, nbytes);
240 ARR_NDIM(r) = 1;
241 r->dataoffset = 0; /* marker for no null bitmap */
242 ARR_ELEMTYPE(r) = INT4OID;
243 ARR_DIMS(r)[0] = num;
244 ARR_LBOUND(r)[0] = 1;
245
246 return r;
247}
ARR_NDIM
#define ARR_NDIM(a)
Definition: array.h:290
ARR_ELEMTYPE
#define ARR_ELEMTYPE(a)
Definition: array.h:292
ARR_OVERHEAD_NONULLS
#define ARR_OVERHEAD_NONULLS(ndims)
Definition: array.h:310
ARR_DIMS
#define ARR_DIMS(a)
Definition: array.h:294
ARR_LBOUND
#define ARR_LBOUND(a)
Definition: array.h:296
construct_empty_array
ArrayType * construct_empty_array(Oid elmtype)
Definition: arrayfuncs.c:3580
Assert
#define Assert(condition)
Definition: c.h:815
palloc0
void * palloc0(Size size)
Definition: mcxt.c:1347
ArrayType::dataoffset
int32 dataoffset
Definition: array.h:96
SET_VARSIZE
#define SET_VARSIZE(PTR, len)
Definition: varatt.h:305

References ARR_DIMS, ARR_ELEMTYPE, ARR_LBOUND, ARR_NDIM, ARR_OVERHEAD_NONULLS, Assert, construct_empty_array(), ArrayType::dataoffset, palloc0(), and SET_VARSIZE.

Referenced by copy_intArrayType(), g_int_decompress(), g_int_union(), inner_int_inter(), inner_int_union(), int_to_intset(), intarray_add_elem(), intarray_concat_arrays(), intset_subtract(), and subarray().

◆ resize_intArrayType()

ArrayType * resize_intArrayType ( ArrayType *  a,
int  num 
)

Definition at line 250 of file _int_tool.c.

251{
252 int nbytes;
253 int i;
254
255 /* if no elements, return a zero-dimensional array */
256 if (num <= 0)
257 {
258 Assert(num == 0);
259 a = construct_empty_array(INT4OID);
260 return a;
261 }
262
263 if (num == ARRNELEMS(a))
264 return a;
265
266 nbytes = ARR_DATA_OFFSET(a) + sizeof(int) * num;
267
268 a = (ArrayType *) repalloc(a, nbytes);
269
270 SET_VARSIZE(a, nbytes);
271 /* usually the array should be 1-D already, but just in case ... */
272 for (i = 0; i < ARR_NDIM(a); i++)
273 {
274 ARR_DIMS(a)[i] = num;
275 num = 1;
276 }
277 return a;
278}
ARR_DATA_OFFSET
#define ARR_DATA_OFFSET(a)
Definition: array.h:316
repalloc
void * repalloc(void *pointer, Size size)
Definition: mcxt.c:1541

References a, ARR_DATA_OFFSET, ARR_DIMS, ARR_NDIM, ARRNELEMS, Assert, construct_empty_array(), i, repalloc(), and SET_VARSIZE.

Referenced by _int_unique(), g_int_compress(), inner_int_inter(), inner_int_union(), intarray_del_elem(), and intset_subtract().

◆ rt__int_size()

void rt__int_size ( ArrayType *  a,
float *  size 
)

Definition at line 184 of file _int_tool.c.

185{
186 *size = (float) ARRNELEMS(a);
187}

References a, ARRNELEMS, and size.

Referenced by g_int_penalty(), and g_int_picksplit().