PostgreSQL Source Code  git master
pg_lsn.c File Reference
#include "postgres.h"
#include "funcapi.h"
#include "libpq/pqformat.h"
#include "utils/builtins.h"
#include "utils/numeric.h"
#include "utils/pg_lsn.h"
Include dependency graph for pg_lsn.c:

Go to the source code of this file.

Macros

#define MAXPG_LSNLEN   17
 
#define MAXPG_LSNCOMPONENT   8
 

Functions

XLogRecPtr pg_lsn_in_internal (const char *str, bool *have_error)
 
Datum pg_lsn_in (PG_FUNCTION_ARGS)
 
Datum pg_lsn_out (PG_FUNCTION_ARGS)
 
Datum pg_lsn_recv (PG_FUNCTION_ARGS)
 
Datum pg_lsn_send (PG_FUNCTION_ARGS)
 
Datum pg_lsn_eq (PG_FUNCTION_ARGS)
 
Datum pg_lsn_ne (PG_FUNCTION_ARGS)
 
Datum pg_lsn_lt (PG_FUNCTION_ARGS)
 
Datum pg_lsn_gt (PG_FUNCTION_ARGS)
 
Datum pg_lsn_le (PG_FUNCTION_ARGS)
 
Datum pg_lsn_ge (PG_FUNCTION_ARGS)
 
Datum pg_lsn_larger (PG_FUNCTION_ARGS)
 
Datum pg_lsn_smaller (PG_FUNCTION_ARGS)
 
Datum pg_lsn_cmp (PG_FUNCTION_ARGS)
 
Datum pg_lsn_hash (PG_FUNCTION_ARGS)
 
Datum pg_lsn_hash_extended (PG_FUNCTION_ARGS)
 
Datum pg_lsn_mi (PG_FUNCTION_ARGS)
 
Datum pg_lsn_pli (PG_FUNCTION_ARGS)
 
Datum pg_lsn_mii (PG_FUNCTION_ARGS)
 

Macro Definition Documentation

◆ MAXPG_LSNCOMPONENT

#define MAXPG_LSNCOMPONENT   8

Definition at line 23 of file pg_lsn.c.

Referenced by pg_lsn_in_internal().

◆ MAXPG_LSNLEN

#define MAXPG_LSNLEN   17

Definition at line 22 of file pg_lsn.c.

Referenced by pg_lsn_out().

Function Documentation

◆ pg_lsn_cmp()

Datum pg_lsn_cmp ( PG_FUNCTION_ARGS  )

Definition at line 192 of file pg_lsn.c.

References PG_GETARG_LSN, and PG_RETURN_INT32.

193 {
194  XLogRecPtr a = PG_GETARG_LSN(0);
195  XLogRecPtr b = PG_GETARG_LSN(1);
196 
197  if (a > b)
198  PG_RETURN_INT32(1);
199  else if (a == b)
200  PG_RETURN_INT32(0);
201  else
202  PG_RETURN_INT32(-1);
203 }
#define PG_RETURN_INT32(x)
Definition: fmgr.h:354
#define PG_GETARG_LSN(n)
Definition: pg_lsn.h:24
uint64 XLogRecPtr
Definition: xlogdefs.h:21

◆ pg_lsn_eq()

Datum pg_lsn_eq ( PG_FUNCTION_ARGS  )

Definition at line 119 of file pg_lsn.c.

References PG_GETARG_LSN, and PG_RETURN_BOOL.

120 {
121  XLogRecPtr lsn1 = PG_GETARG_LSN(0);
122  XLogRecPtr lsn2 = PG_GETARG_LSN(1);
123 
124  PG_RETURN_BOOL(lsn1 == lsn2);
125 }
#define PG_GETARG_LSN(n)
Definition: pg_lsn.h:24
#define PG_RETURN_BOOL(x)
Definition: fmgr.h:359
uint64 XLogRecPtr
Definition: xlogdefs.h:21

◆ pg_lsn_ge()

Datum pg_lsn_ge ( PG_FUNCTION_ARGS  )

Definition at line 164 of file pg_lsn.c.

References PG_GETARG_LSN, and PG_RETURN_BOOL.

165 {
166  XLogRecPtr lsn1 = PG_GETARG_LSN(0);
167  XLogRecPtr lsn2 = PG_GETARG_LSN(1);
168 
169  PG_RETURN_BOOL(lsn1 >= lsn2);
170 }
#define PG_GETARG_LSN(n)
Definition: pg_lsn.h:24
#define PG_RETURN_BOOL(x)
Definition: fmgr.h:359
uint64 XLogRecPtr
Definition: xlogdefs.h:21

◆ pg_lsn_gt()

Datum pg_lsn_gt ( PG_FUNCTION_ARGS  )

Definition at line 146 of file pg_lsn.c.

References PG_GETARG_LSN, and PG_RETURN_BOOL.

147 {
148  XLogRecPtr lsn1 = PG_GETARG_LSN(0);
149  XLogRecPtr lsn2 = PG_GETARG_LSN(1);
150 
151  PG_RETURN_BOOL(lsn1 > lsn2);
152 }
#define PG_GETARG_LSN(n)
Definition: pg_lsn.h:24
#define PG_RETURN_BOOL(x)
Definition: fmgr.h:359
uint64 XLogRecPtr
Definition: xlogdefs.h:21

◆ pg_lsn_hash()

Datum pg_lsn_hash ( PG_FUNCTION_ARGS  )

Definition at line 207 of file pg_lsn.c.

References hashint8().

208 {
209  /* We can use hashint8 directly */
210  return hashint8(fcinfo);
211 }
Datum hashint8(PG_FUNCTION_ARGS)
Definition: hashfunc.c:83

◆ pg_lsn_hash_extended()

Datum pg_lsn_hash_extended ( PG_FUNCTION_ARGS  )

Definition at line 214 of file pg_lsn.c.

References hashint8extended().

215 {
216  return hashint8extended(fcinfo);
217 }
Datum hashint8extended(PG_FUNCTION_ARGS)
Definition: hashfunc.c:103

◆ pg_lsn_in()

Datum pg_lsn_in ( PG_FUNCTION_ARGS  )

Definition at line 64 of file pg_lsn.c.

References ereport, errcode(), errmsg(), ERROR, PG_GETARG_CSTRING, pg_lsn_in_internal(), PG_RETURN_LSN, and generate_unaccent_rules::str.

Referenced by libpqrcv_create_slot().

65 {
66  char *str = PG_GETARG_CSTRING(0);
67  XLogRecPtr result;
68  bool have_error = false;
69 
70  result = pg_lsn_in_internal(str, &have_error);
71  if (have_error)
72  ereport(ERROR,
73  (errcode(ERRCODE_INVALID_TEXT_REPRESENTATION),
74  errmsg("invalid input syntax for type %s: \"%s\"",
75  "pg_lsn", str)));
76 
77  PG_RETURN_LSN(result);
78 }
int errcode(int sqlerrcode)
Definition: elog.c:694
#define PG_RETURN_LSN(x)
Definition: pg_lsn.h:25
#define ERROR
Definition: elog.h:45
#define ereport(elevel,...)
Definition: elog.h:155
XLogRecPtr pg_lsn_in_internal(const char *str, bool *have_error)
Definition: pg_lsn.c:30
uint64 XLogRecPtr
Definition: xlogdefs.h:21
int errmsg(const char *fmt,...)
Definition: elog.c:905
#define PG_GETARG_CSTRING(n)
Definition: fmgr.h:277

◆ pg_lsn_in_internal()

XLogRecPtr pg_lsn_in_internal ( const char *  str,
bool have_error 
)

Definition at line 30 of file pg_lsn.c.

References Assert, InvalidXLogRecPtr, and MAXPG_LSNCOMPONENT.

Referenced by check_recovery_target_lsn(), and pg_lsn_in().

31 {
32  int len1,
33  len2;
34  uint32 id,
35  off;
36  XLogRecPtr result;
37 
38  Assert(have_error != NULL);
39  *have_error = false;
40 
41  /* Sanity check input format. */
42  len1 = strspn(str, "0123456789abcdefABCDEF");
43  if (len1 < 1 || len1 > MAXPG_LSNCOMPONENT || str[len1] != '/')
44  {
45  *have_error = true;
46  return InvalidXLogRecPtr;
47  }
48  len2 = strspn(str + len1 + 1, "0123456789abcdefABCDEF");
49  if (len2 < 1 || len2 > MAXPG_LSNCOMPONENT || str[len1 + 1 + len2] != '\0')
50  {
51  *have_error = true;
52  return InvalidXLogRecPtr;
53  }
54 
55  /* Decode result. */
56  id = (uint32) strtoul(str, NULL, 16);
57  off = (uint32) strtoul(str + len1 + 1, NULL, 16);
58  result = ((uint64) id << 32) | off;
59 
60  return result;
61 }
#define InvalidXLogRecPtr
Definition: xlogdefs.h:28
unsigned int uint32
Definition: c.h:441
uint64 XLogRecPtr
Definition: xlogdefs.h:21
#define Assert(condition)
Definition: c.h:804
#define MAXPG_LSNCOMPONENT
Definition: pg_lsn.c:23

◆ pg_lsn_larger()

Datum pg_lsn_larger ( PG_FUNCTION_ARGS  )

Definition at line 173 of file pg_lsn.c.

References PG_GETARG_LSN, and PG_RETURN_LSN.

174 {
175  XLogRecPtr lsn1 = PG_GETARG_LSN(0);
176  XLogRecPtr lsn2 = PG_GETARG_LSN(1);
177 
178  PG_RETURN_LSN((lsn1 > lsn2) ? lsn1 : lsn2);
179 }
#define PG_RETURN_LSN(x)
Definition: pg_lsn.h:25
#define PG_GETARG_LSN(n)
Definition: pg_lsn.h:24
uint64 XLogRecPtr
Definition: xlogdefs.h:21

◆ pg_lsn_le()

Datum pg_lsn_le ( PG_FUNCTION_ARGS  )

Definition at line 155 of file pg_lsn.c.

References PG_GETARG_LSN, and PG_RETURN_BOOL.

156 {
157  XLogRecPtr lsn1 = PG_GETARG_LSN(0);
158  XLogRecPtr lsn2 = PG_GETARG_LSN(1);
159 
160  PG_RETURN_BOOL(lsn1 <= lsn2);
161 }
#define PG_GETARG_LSN(n)
Definition: pg_lsn.h:24
#define PG_RETURN_BOOL(x)
Definition: fmgr.h:359
uint64 XLogRecPtr
Definition: xlogdefs.h:21

◆ pg_lsn_lt()

Datum pg_lsn_lt ( PG_FUNCTION_ARGS  )

Definition at line 137 of file pg_lsn.c.

References PG_GETARG_LSN, and PG_RETURN_BOOL.

138 {
139  XLogRecPtr lsn1 = PG_GETARG_LSN(0);
140  XLogRecPtr lsn2 = PG_GETARG_LSN(1);
141 
142  PG_RETURN_BOOL(lsn1 < lsn2);
143 }
#define PG_GETARG_LSN(n)
Definition: pg_lsn.h:24
#define PG_RETURN_BOOL(x)
Definition: fmgr.h:359
uint64 XLogRecPtr
Definition: xlogdefs.h:21

◆ pg_lsn_mi()

Datum pg_lsn_mi ( PG_FUNCTION_ARGS  )

Definition at line 225 of file pg_lsn.c.

References buf, CStringGetDatum, DirectFunctionCall3, Int32GetDatum, numeric_in(), ObjectIdGetDatum, PG_GETARG_LSN, snprintf, and UINT64_FORMAT.

Referenced by pg_wal_lsn_diff().

226 {
227  XLogRecPtr lsn1 = PG_GETARG_LSN(0);
228  XLogRecPtr lsn2 = PG_GETARG_LSN(1);
229  char buf[256];
230  Datum result;
231 
232  /* Output could be as large as plus or minus 2^63 - 1. */
233  if (lsn1 < lsn2)
234  snprintf(buf, sizeof buf, "-" UINT64_FORMAT, lsn2 - lsn1);
235  else
236  snprintf(buf, sizeof buf, UINT64_FORMAT, lsn1 - lsn2);
237 
238  /* Convert to numeric. */
240  CStringGetDatum(buf),
241  ObjectIdGetDatum(0),
242  Int32GetDatum(-1));
243 
244  return result;
245 }
#define ObjectIdGetDatum(X)
Definition: postgres.h:507
static char * buf
Definition: pg_test_fsync.c:68
#define CStringGetDatum(X)
Definition: postgres.h:578
Datum numeric_in(PG_FUNCTION_ARGS)
Definition: numeric.c:621
#define DirectFunctionCall3(func, arg1, arg2, arg3)
Definition: fmgr.h:630
#define PG_GETARG_LSN(n)
Definition: pg_lsn.h:24
uintptr_t Datum
Definition: postgres.h:367
uint64 XLogRecPtr
Definition: xlogdefs.h:21
#define Int32GetDatum(X)
Definition: postgres.h:479
#define snprintf
Definition: port.h:216
#define UINT64_FORMAT
Definition: c.h:484

◆ pg_lsn_mii()

Datum pg_lsn_mii ( PG_FUNCTION_ARGS  )

Definition at line 286 of file pg_lsn.c.

References buf, CStringGetDatum, DirectFunctionCall1, DirectFunctionCall2, DirectFunctionCall3, ereport, errcode(), errmsg(), ERROR, Int32GetDatum, numeric_in(), numeric_is_nan(), numeric_pg_lsn(), numeric_sub(), NumericGetDatum, ObjectIdGetDatum, PG_GETARG_LSN, PG_GETARG_NUMERIC, snprintf, and UINT64_FORMAT.

287 {
288  XLogRecPtr lsn = PG_GETARG_LSN(0);
289  Numeric nbytes = PG_GETARG_NUMERIC(1);
290  Datum num;
291  Datum res;
292  char buf[32];
293 
294  if (numeric_is_nan(nbytes))
295  ereport(ERROR,
296  (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
297  errmsg("cannot subtract NaN from pg_lsn")));
298 
299  /* Convert to numeric */
300  snprintf(buf, sizeof(buf), UINT64_FORMAT, lsn);
302  CStringGetDatum(buf),
303  ObjectIdGetDatum(0),
304  Int32GetDatum(-1));
305 
306  /* Subtract two numerics */
308  NumericGetDatum(num),
309  NumericGetDatum(nbytes));
310 
311  /* Convert to pg_lsn */
312  return DirectFunctionCall1(numeric_pg_lsn, res);
313 }
#define NumericGetDatum(X)
Definition: numeric.h:51
int errcode(int sqlerrcode)
Definition: elog.c:694
#define DirectFunctionCall1(func, arg1)
Definition: fmgr.h:626
#define ObjectIdGetDatum(X)
Definition: postgres.h:507
#define ERROR
Definition: elog.h:45
bool numeric_is_nan(Numeric num)
Definition: numeric.c:774
Datum numeric_pg_lsn(PG_FUNCTION_ARGS)
Definition: numeric.c:4427
static char * buf
Definition: pg_test_fsync.c:68
#define CStringGetDatum(X)
Definition: postgres.h:578
Datum numeric_in(PG_FUNCTION_ARGS)
Definition: numeric.c:621
#define DirectFunctionCall3(func, arg1, arg2, arg3)
Definition: fmgr.h:630
#define PG_GETARG_LSN(n)
Definition: pg_lsn.h:24
uintptr_t Datum
Definition: postgres.h:367
Datum numeric_sub(PG_FUNCTION_ARGS)
Definition: numeric.c:2788
#define ereport(elevel,...)
Definition: elog.h:155
#define PG_GETARG_NUMERIC(n)
Definition: numeric.h:52
uint64 XLogRecPtr
Definition: xlogdefs.h:21
#define Int32GetDatum(X)
Definition: postgres.h:479
int errmsg(const char *fmt,...)
Definition: elog.c:905
#define snprintf
Definition: port.h:216
#define UINT64_FORMAT
Definition: c.h:484
#define DirectFunctionCall2(func, arg1, arg2)
Definition: fmgr.h:628

◆ pg_lsn_ne()

Datum pg_lsn_ne ( PG_FUNCTION_ARGS  )

Definition at line 128 of file pg_lsn.c.

References PG_GETARG_LSN, and PG_RETURN_BOOL.

129 {
130  XLogRecPtr lsn1 = PG_GETARG_LSN(0);
131  XLogRecPtr lsn2 = PG_GETARG_LSN(1);
132 
133  PG_RETURN_BOOL(lsn1 != lsn2);
134 }
#define PG_GETARG_LSN(n)
Definition: pg_lsn.h:24
#define PG_RETURN_BOOL(x)
Definition: fmgr.h:359
uint64 XLogRecPtr
Definition: xlogdefs.h:21

◆ pg_lsn_out()

Datum pg_lsn_out ( PG_FUNCTION_ARGS  )

Definition at line 81 of file pg_lsn.c.

References buf, LSN_FORMAT_ARGS, MAXPG_LSNLEN, PG_GETARG_LSN, PG_RETURN_CSTRING, pstrdup(), and snprintf.

82 {
83  XLogRecPtr lsn = PG_GETARG_LSN(0);
84  char buf[MAXPG_LSNLEN + 1];
85  char *result;
86 
87  snprintf(buf, sizeof buf, "%X/%X", LSN_FORMAT_ARGS(lsn));
88  result = pstrdup(buf);
89  PG_RETURN_CSTRING(result);
90 }
#define MAXPG_LSNLEN
Definition: pg_lsn.c:22
char * pstrdup(const char *in)
Definition: mcxt.c:1187
#define LSN_FORMAT_ARGS(lsn)
Definition: xlogdefs.h:43
static char * buf
Definition: pg_test_fsync.c:68
#define PG_GETARG_LSN(n)
Definition: pg_lsn.h:24
uint64 XLogRecPtr
Definition: xlogdefs.h:21
#define PG_RETURN_CSTRING(x)
Definition: fmgr.h:362
#define snprintf
Definition: port.h:216

◆ pg_lsn_pli()

Datum pg_lsn_pli ( PG_FUNCTION_ARGS  )

Definition at line 252 of file pg_lsn.c.

References buf, CStringGetDatum, DirectFunctionCall1, DirectFunctionCall2, DirectFunctionCall3, ereport, errcode(), errmsg(), ERROR, Int32GetDatum, numeric_add(), numeric_in(), numeric_is_nan(), numeric_pg_lsn(), NumericGetDatum, ObjectIdGetDatum, PG_GETARG_LSN, PG_GETARG_NUMERIC, snprintf, and UINT64_FORMAT.

253 {
254  XLogRecPtr lsn = PG_GETARG_LSN(0);
255  Numeric nbytes = PG_GETARG_NUMERIC(1);
256  Datum num;
257  Datum res;
258  char buf[32];
259 
260  if (numeric_is_nan(nbytes))
261  ereport(ERROR,
262  (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
263  errmsg("cannot add NaN to pg_lsn")));
264 
265  /* Convert to numeric */
266  snprintf(buf, sizeof(buf), UINT64_FORMAT, lsn);
268  CStringGetDatum(buf),
269  ObjectIdGetDatum(0),
270  Int32GetDatum(-1));
271 
272  /* Add two numerics */
274  NumericGetDatum(num),
275  NumericGetDatum(nbytes));
276 
277  /* Convert to pg_lsn */
278  return DirectFunctionCall1(numeric_pg_lsn, res);
279 }
#define NumericGetDatum(X)
Definition: numeric.h:51
int errcode(int sqlerrcode)
Definition: elog.c:694
#define DirectFunctionCall1(func, arg1)
Definition: fmgr.h:626
#define ObjectIdGetDatum(X)
Definition: postgres.h:507
#define ERROR
Definition: elog.h:45
bool numeric_is_nan(Numeric num)
Definition: numeric.c:774
Datum numeric_pg_lsn(PG_FUNCTION_ARGS)
Definition: numeric.c:4427
static char * buf
Definition: pg_test_fsync.c:68
#define CStringGetDatum(X)
Definition: postgres.h:578
Datum numeric_in(PG_FUNCTION_ARGS)
Definition: numeric.c:621
#define DirectFunctionCall3(func, arg1, arg2, arg3)
Definition: fmgr.h:630
#define PG_GETARG_LSN(n)
Definition: pg_lsn.h:24
uintptr_t Datum
Definition: postgres.h:367
#define ereport(elevel,...)
Definition: elog.h:155
#define PG_GETARG_NUMERIC(n)
Definition: numeric.h:52
uint64 XLogRecPtr
Definition: xlogdefs.h:21
#define Int32GetDatum(X)
Definition: postgres.h:479
int errmsg(const char *fmt,...)
Definition: elog.c:905
#define snprintf
Definition: port.h:216
Datum numeric_add(PG_FUNCTION_ARGS)
Definition: numeric.c:2711
#define UINT64_FORMAT
Definition: c.h:484
#define DirectFunctionCall2(func, arg1, arg2)
Definition: fmgr.h:628

◆ pg_lsn_recv()

Datum pg_lsn_recv ( PG_FUNCTION_ARGS  )

Definition at line 93 of file pg_lsn.c.

References buf, PG_GETARG_POINTER, PG_RETURN_LSN, and pq_getmsgint64().

94 {
96  XLogRecPtr result;
97 
98  result = pq_getmsgint64(buf);
99  PG_RETURN_LSN(result);
100 }
StringInfoData * StringInfo
Definition: stringinfo.h:44
#define PG_GETARG_POINTER(n)
Definition: fmgr.h:276
#define PG_RETURN_LSN(x)
Definition: pg_lsn.h:25
static char * buf
Definition: pg_test_fsync.c:68
uint64 XLogRecPtr
Definition: xlogdefs.h:21
int64 pq_getmsgint64(StringInfo msg)
Definition: pqformat.c:455

◆ pg_lsn_send()

Datum pg_lsn_send ( PG_FUNCTION_ARGS  )

Definition at line 103 of file pg_lsn.c.

References buf, PG_GETARG_LSN, PG_RETURN_BYTEA_P, pq_begintypsend(), pq_endtypsend(), and pq_sendint64().

104 {
105  XLogRecPtr lsn = PG_GETARG_LSN(0);
107 
108  pq_begintypsend(&buf);
109  pq_sendint64(&buf, lsn);
111 }
void pq_begintypsend(StringInfo buf)
Definition: pqformat.c:328
#define PG_RETURN_BYTEA_P(x)
Definition: fmgr.h:371
static void pq_sendint64(StringInfo buf, uint64 i)
Definition: pqformat.h:153
bytea * pq_endtypsend(StringInfo buf)
Definition: pqformat.c:348
static char * buf
Definition: pg_test_fsync.c:68
#define PG_GETARG_LSN(n)
Definition: pg_lsn.h:24
uint64 XLogRecPtr
Definition: xlogdefs.h:21

◆ pg_lsn_smaller()

Datum pg_lsn_smaller ( PG_FUNCTION_ARGS  )

Definition at line 182 of file pg_lsn.c.

References PG_GETARG_LSN, and PG_RETURN_LSN.

183 {
184  XLogRecPtr lsn1 = PG_GETARG_LSN(0);
185  XLogRecPtr lsn2 = PG_GETARG_LSN(1);
186 
187  PG_RETURN_LSN((lsn1 < lsn2) ? lsn1 : lsn2);
188 }
#define PG_RETURN_LSN(x)
Definition: pg_lsn.h:25
#define PG_GETARG_LSN(n)
Definition: pg_lsn.h:24
uint64 XLogRecPtr
Definition: xlogdefs.h:21