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 }
isort_cmp
static int isort_cmp(const void *a, const void *b, void *arg)
Definition: _int_tool.c:191
resize_intArrayType
ArrayType * resize_intArrayType(ArrayType *a, int num)
Definition: _int_tool.c:250
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
signed int int32
Definition: c.h:494
pg_cmp_s32
static int pg_cmp_s32(int32 a, int32 b)
Definition: int.h:598
b
int b
Definition: isn.c:70
a
int a
Definition: isn.c:69

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:73
len
const void size_t len
Definition: pg_crc32c_sse42.c:24

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:74

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:1004
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 }
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:27

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:3568
Assert
#define Assert(condition)
Definition: c.h:858
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().