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fmgr.h
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1 /*-------------------------------------------------------------------------
2  *
3  * fmgr.h
4  * Definitions for the Postgres function manager and function-call
5  * interface.
6  *
7  * This file must be included by all Postgres modules that either define
8  * or call fmgr-callable functions.
9  *
10  *
11  * Portions Copyright (c) 1996-2018, PostgreSQL Global Development Group
12  * Portions Copyright (c) 1994, Regents of the University of California
13  *
14  * src/include/fmgr.h
15  *
16  *-------------------------------------------------------------------------
17  */
18 #ifndef FMGR_H
19 #define FMGR_H
20 
21 /* We don't want to include primnodes.h here, so make some stub references */
22 typedef struct Node *fmNodePtr;
23 typedef struct Aggref *fmAggrefPtr;
24 
25 /* Likewise, avoid including execnodes.h here */
27 
28 /* Likewise, avoid including stringinfo.h here */
29 typedef struct StringInfoData *fmStringInfo;
30 
31 
32 /*
33  * All functions that can be called directly by fmgr must have this signature.
34  * (Other functions can be called by using a handler that does have this
35  * signature.)
36  */
37 
39 
40 typedef Datum (*PGFunction) (FunctionCallInfo fcinfo);
41 
42 /*
43  * This struct holds the system-catalog information that must be looked up
44  * before a function can be called through fmgr. If the same function is
45  * to be called multiple times, the lookup need be done only once and the
46  * info struct saved for re-use.
47  *
48  * Note that fn_expr really is parse-time-determined information about the
49  * arguments, rather than about the function itself. But it's convenient
50  * to store it here rather than in FunctionCallInfoData, where it might more
51  * logically belong.
52  *
53  * fn_extra is available for use by the called function; all other fields
54  * should be treated as read-only after the struct is created.
55  */
56 typedef struct FmgrInfo
57 {
58  PGFunction fn_addr; /* pointer to function or handler to be called */
59  Oid fn_oid; /* OID of function (NOT of handler, if any) */
60  short fn_nargs; /* number of input args (0..FUNC_MAX_ARGS) */
61  bool fn_strict; /* function is "strict" (NULL in => NULL out) */
62  bool fn_retset; /* function returns a set */
63  unsigned char fn_stats; /* collect stats if track_functions > this */
64  void *fn_extra; /* extra space for use by handler */
65  MemoryContext fn_mcxt; /* memory context to store fn_extra in */
66  fmNodePtr fn_expr; /* expression parse tree for call, or NULL */
67 } FmgrInfo;
68 
69 /*
70  * This struct is the data actually passed to an fmgr-called function.
71  *
72  * The called function is expected to set isnull, and possibly resultinfo or
73  * fields in whatever resultinfo points to. It should not change any other
74  * fields. (In particular, scribbling on the argument arrays is a bad idea,
75  * since some callers assume they can re-call with the same arguments.)
76  */
77 typedef struct FunctionCallInfoData
78 {
79  FmgrInfo *flinfo; /* ptr to lookup info used for this call */
80  fmNodePtr context; /* pass info about context of call */
81  fmNodePtr resultinfo; /* pass or return extra info about result */
82  Oid fncollation; /* collation for function to use */
83 #define FIELDNO_FUNCTIONCALLINFODATA_ISNULL 4
84  bool isnull; /* function must set true if result is NULL */
85  short nargs; /* # arguments actually passed */
86 #define FIELDNO_FUNCTIONCALLINFODATA_ARG 6
87  Datum arg[FUNC_MAX_ARGS]; /* Arguments passed to function */
88 #define FIELDNO_FUNCTIONCALLINFODATA_ARGNULL 7
89  bool argnull[FUNC_MAX_ARGS]; /* T if arg[i] is actually NULL */
91 
92 /*
93  * This routine fills a FmgrInfo struct, given the OID
94  * of the function to be called.
95  */
96 extern void fmgr_info(Oid functionId, FmgrInfo *finfo);
97 
98 /*
99  * Same, when the FmgrInfo struct is in a memory context longer-lived than
100  * CurrentMemoryContext. The specified context will be set as fn_mcxt
101  * and used to hold all subsidiary data of finfo.
102  */
103 extern void fmgr_info_cxt(Oid functionId, FmgrInfo *finfo,
104  MemoryContext mcxt);
105 
106 /* Convenience macro for setting the fn_expr field */
107 #define fmgr_info_set_expr(expr, finfo) \
108  ((finfo)->fn_expr = (expr))
109 
110 /*
111  * Copy an FmgrInfo struct
112  */
113 extern void fmgr_info_copy(FmgrInfo *dstinfo, FmgrInfo *srcinfo,
114  MemoryContext destcxt);
115 
116 extern void fmgr_symbol(Oid functionId, char **mod, char **fn);
117 
118 /*
119  * This macro initializes all the fields of a FunctionCallInfoData except
120  * for the arg[] and argnull[] arrays. Performance testing has shown that
121  * the fastest way to set up argnull[] for small numbers of arguments is to
122  * explicitly set each required element to false, so we don't try to zero
123  * out the argnull[] array in the macro.
124  */
125 #define InitFunctionCallInfoData(Fcinfo, Flinfo, Nargs, Collation, Context, Resultinfo) \
126  do { \
127  (Fcinfo).flinfo = (Flinfo); \
128  (Fcinfo).context = (Context); \
129  (Fcinfo).resultinfo = (Resultinfo); \
130  (Fcinfo).fncollation = (Collation); \
131  (Fcinfo).isnull = false; \
132  (Fcinfo).nargs = (Nargs); \
133  } while (0)
134 
135 /*
136  * This macro invokes a function given a filled-in FunctionCallInfoData
137  * struct. The macro result is the returned Datum --- but note that
138  * caller must still check fcinfo->isnull! Also, if function is strict,
139  * it is caller's responsibility to verify that no null arguments are present
140  * before calling.
141  */
142 #define FunctionCallInvoke(fcinfo) ((* (fcinfo)->flinfo->fn_addr) (fcinfo))
143 
144 
145 /*-------------------------------------------------------------------------
146  * Support macros to ease writing fmgr-compatible functions
147  *
148  * A C-coded fmgr-compatible function should be declared as
149  *
150  * Datum
151  * function_name(PG_FUNCTION_ARGS)
152  * {
153  * ...
154  * }
155  *
156  * It should access its arguments using appropriate PG_GETARG_xxx macros
157  * and should return its result using PG_RETURN_xxx.
158  *
159  *-------------------------------------------------------------------------
160  */
161 
162 /* Standard parameter list for fmgr-compatible functions */
163 #define PG_FUNCTION_ARGS FunctionCallInfo fcinfo
164 
165 /*
166  * Get collation function should use.
167  */
168 #define PG_GET_COLLATION() (fcinfo->fncollation)
169 
170 /*
171  * Get number of arguments passed to function.
172  */
173 #define PG_NARGS() (fcinfo->nargs)
174 
175 /*
176  * If function is not marked "proisstrict" in pg_proc, it must check for
177  * null arguments using this macro. Do not try to GETARG a null argument!
178  */
179 #define PG_ARGISNULL(n) (fcinfo->argnull[n])
180 
181 /*
182  * Support for fetching detoasted copies of toastable datatypes (all of
183  * which are varlena types). pg_detoast_datum() gives you either the input
184  * datum (if not toasted) or a detoasted copy allocated with palloc().
185  * pg_detoast_datum_copy() always gives you a palloc'd copy --- use it
186  * if you need a modifiable copy of the input. Caller is expected to have
187  * checked for null inputs first, if necessary.
188  *
189  * pg_detoast_datum_packed() will return packed (1-byte header) datums
190  * unmodified. It will still expand an externally toasted or compressed datum.
191  * The resulting datum can be accessed using VARSIZE_ANY() and VARDATA_ANY()
192  * (beware of multiple evaluations in those macros!)
193  *
194  * In consumers oblivious to data alignment, call PG_DETOAST_DATUM_PACKED(),
195  * VARDATA_ANY(), VARSIZE_ANY() and VARSIZE_ANY_EXHDR(). Elsewhere, call
196  * PG_DETOAST_DATUM(), VARDATA() and VARSIZE(). Directly fetching an int16,
197  * int32 or wider field in the struct representing the datum layout requires
198  * aligned data. memcpy() is alignment-oblivious, as are most operations on
199  * datatypes, such as text, whose layout struct contains only char fields.
200  *
201  * Note: it'd be nice if these could be macros, but I see no way to do that
202  * without evaluating the arguments multiple times, which is NOT acceptable.
203  */
204 extern struct varlena *pg_detoast_datum(struct varlena *datum);
205 extern struct varlena *pg_detoast_datum_copy(struct varlena *datum);
206 extern struct varlena *pg_detoast_datum_slice(struct varlena *datum,
207  int32 first, int32 count);
208 extern struct varlena *pg_detoast_datum_packed(struct varlena *datum);
209 
210 #define PG_DETOAST_DATUM(datum) \
211  pg_detoast_datum((struct varlena *) DatumGetPointer(datum))
212 #define PG_DETOAST_DATUM_COPY(datum) \
213  pg_detoast_datum_copy((struct varlena *) DatumGetPointer(datum))
214 #define PG_DETOAST_DATUM_SLICE(datum,f,c) \
215  pg_detoast_datum_slice((struct varlena *) DatumGetPointer(datum), \
216  (int32) (f), (int32) (c))
217 /* WARNING -- unaligned pointer */
218 #define PG_DETOAST_DATUM_PACKED(datum) \
219  pg_detoast_datum_packed((struct varlena *) DatumGetPointer(datum))
220 
221 /*
222  * Support for cleaning up detoasted copies of inputs. This must only
223  * be used for pass-by-ref datatypes, and normally would only be used
224  * for toastable types. If the given pointer is different from the
225  * original argument, assume it's a palloc'd detoasted copy, and pfree it.
226  * NOTE: most functions on toastable types do not have to worry about this,
227  * but we currently require that support functions for indexes not leak
228  * memory.
229  */
230 #define PG_FREE_IF_COPY(ptr,n) \
231  do { \
232  if ((Pointer) (ptr) != PG_GETARG_POINTER(n)) \
233  pfree(ptr); \
234  } while (0)
235 
236 /* Macros for fetching arguments of standard types */
237 
238 #define PG_GETARG_DATUM(n) (fcinfo->arg[n])
239 #define PG_GETARG_INT32(n) DatumGetInt32(PG_GETARG_DATUM(n))
240 #define PG_GETARG_UINT32(n) DatumGetUInt32(PG_GETARG_DATUM(n))
241 #define PG_GETARG_INT16(n) DatumGetInt16(PG_GETARG_DATUM(n))
242 #define PG_GETARG_UINT16(n) DatumGetUInt16(PG_GETARG_DATUM(n))
243 #define PG_GETARG_CHAR(n) DatumGetChar(PG_GETARG_DATUM(n))
244 #define PG_GETARG_BOOL(n) DatumGetBool(PG_GETARG_DATUM(n))
245 #define PG_GETARG_OID(n) DatumGetObjectId(PG_GETARG_DATUM(n))
246 #define PG_GETARG_POINTER(n) DatumGetPointer(PG_GETARG_DATUM(n))
247 #define PG_GETARG_CSTRING(n) DatumGetCString(PG_GETARG_DATUM(n))
248 #define PG_GETARG_NAME(n) DatumGetName(PG_GETARG_DATUM(n))
249 /* these macros hide the pass-by-reference-ness of the datatype: */
250 #define PG_GETARG_FLOAT4(n) DatumGetFloat4(PG_GETARG_DATUM(n))
251 #define PG_GETARG_FLOAT8(n) DatumGetFloat8(PG_GETARG_DATUM(n))
252 #define PG_GETARG_INT64(n) DatumGetInt64(PG_GETARG_DATUM(n))
253 /* use this if you want the raw, possibly-toasted input datum: */
254 #define PG_GETARG_RAW_VARLENA_P(n) ((struct varlena *) PG_GETARG_POINTER(n))
255 /* use this if you want the input datum de-toasted: */
256 #define PG_GETARG_VARLENA_P(n) PG_DETOAST_DATUM(PG_GETARG_DATUM(n))
257 /* and this if you can handle 1-byte-header datums: */
258 #define PG_GETARG_VARLENA_PP(n) PG_DETOAST_DATUM_PACKED(PG_GETARG_DATUM(n))
259 /* DatumGetFoo macros for varlena types will typically look like this: */
260 #define DatumGetByteaPP(X) ((bytea *) PG_DETOAST_DATUM_PACKED(X))
261 #define DatumGetTextPP(X) ((text *) PG_DETOAST_DATUM_PACKED(X))
262 #define DatumGetBpCharPP(X) ((BpChar *) PG_DETOAST_DATUM_PACKED(X))
263 #define DatumGetVarCharPP(X) ((VarChar *) PG_DETOAST_DATUM_PACKED(X))
264 #define DatumGetHeapTupleHeader(X) ((HeapTupleHeader) PG_DETOAST_DATUM(X))
265 /* And we also offer variants that return an OK-to-write copy */
266 #define DatumGetByteaPCopy(X) ((bytea *) PG_DETOAST_DATUM_COPY(X))
267 #define DatumGetTextPCopy(X) ((text *) PG_DETOAST_DATUM_COPY(X))
268 #define DatumGetBpCharPCopy(X) ((BpChar *) PG_DETOAST_DATUM_COPY(X))
269 #define DatumGetVarCharPCopy(X) ((VarChar *) PG_DETOAST_DATUM_COPY(X))
270 #define DatumGetHeapTupleHeaderCopy(X) ((HeapTupleHeader) PG_DETOAST_DATUM_COPY(X))
271 /* Variants which return n bytes starting at pos. m */
272 #define DatumGetByteaPSlice(X,m,n) ((bytea *) PG_DETOAST_DATUM_SLICE(X,m,n))
273 #define DatumGetTextPSlice(X,m,n) ((text *) PG_DETOAST_DATUM_SLICE(X,m,n))
274 #define DatumGetBpCharPSlice(X,m,n) ((BpChar *) PG_DETOAST_DATUM_SLICE(X,m,n))
275 #define DatumGetVarCharPSlice(X,m,n) ((VarChar *) PG_DETOAST_DATUM_SLICE(X,m,n))
276 /* GETARG macros for varlena types will typically look like this: */
277 #define PG_GETARG_BYTEA_PP(n) DatumGetByteaPP(PG_GETARG_DATUM(n))
278 #define PG_GETARG_TEXT_PP(n) DatumGetTextPP(PG_GETARG_DATUM(n))
279 #define PG_GETARG_BPCHAR_PP(n) DatumGetBpCharPP(PG_GETARG_DATUM(n))
280 #define PG_GETARG_VARCHAR_PP(n) DatumGetVarCharPP(PG_GETARG_DATUM(n))
281 #define PG_GETARG_HEAPTUPLEHEADER(n) DatumGetHeapTupleHeader(PG_GETARG_DATUM(n))
282 /* And we also offer variants that return an OK-to-write copy */
283 #define PG_GETARG_BYTEA_P_COPY(n) DatumGetByteaPCopy(PG_GETARG_DATUM(n))
284 #define PG_GETARG_TEXT_P_COPY(n) DatumGetTextPCopy(PG_GETARG_DATUM(n))
285 #define PG_GETARG_BPCHAR_P_COPY(n) DatumGetBpCharPCopy(PG_GETARG_DATUM(n))
286 #define PG_GETARG_VARCHAR_P_COPY(n) DatumGetVarCharPCopy(PG_GETARG_DATUM(n))
287 #define PG_GETARG_HEAPTUPLEHEADER_COPY(n) DatumGetHeapTupleHeaderCopy(PG_GETARG_DATUM(n))
288 /* And a b-byte slice from position a -also OK to write */
289 #define PG_GETARG_BYTEA_P_SLICE(n,a,b) DatumGetByteaPSlice(PG_GETARG_DATUM(n),a,b)
290 #define PG_GETARG_TEXT_P_SLICE(n,a,b) DatumGetTextPSlice(PG_GETARG_DATUM(n),a,b)
291 #define PG_GETARG_BPCHAR_P_SLICE(n,a,b) DatumGetBpCharPSlice(PG_GETARG_DATUM(n),a,b)
292 #define PG_GETARG_VARCHAR_P_SLICE(n,a,b) DatumGetVarCharPSlice(PG_GETARG_DATUM(n),a,b)
293 /*
294  * Obsolescent variants that guarantee INT alignment for the return value.
295  * Few operations on these particular types need alignment, mainly operations
296  * that cast the VARDATA pointer to a type like int16[]. Most code should use
297  * the ...PP(X) counterpart. Nonetheless, these appear frequently in code
298  * predating the PostgreSQL 8.3 introduction of the ...PP(X) variants.
299  */
300 #define DatumGetByteaP(X) ((bytea *) PG_DETOAST_DATUM(X))
301 #define DatumGetTextP(X) ((text *) PG_DETOAST_DATUM(X))
302 #define DatumGetBpCharP(X) ((BpChar *) PG_DETOAST_DATUM(X))
303 #define DatumGetVarCharP(X) ((VarChar *) PG_DETOAST_DATUM(X))
304 #define PG_GETARG_BYTEA_P(n) DatumGetByteaP(PG_GETARG_DATUM(n))
305 #define PG_GETARG_TEXT_P(n) DatumGetTextP(PG_GETARG_DATUM(n))
306 #define PG_GETARG_BPCHAR_P(n) DatumGetBpCharP(PG_GETARG_DATUM(n))
307 #define PG_GETARG_VARCHAR_P(n) DatumGetVarCharP(PG_GETARG_DATUM(n))
308 
309 /* To return a NULL do this: */
310 #define PG_RETURN_NULL() \
311  do { fcinfo->isnull = true; return (Datum) 0; } while (0)
312 
313 /* A few internal functions return void (which is not the same as NULL!) */
314 #define PG_RETURN_VOID() return (Datum) 0
315 
316 /* Macros for returning results of standard types */
317 
318 #define PG_RETURN_DATUM(x) return (x)
319 #define PG_RETURN_INT32(x) return Int32GetDatum(x)
320 #define PG_RETURN_UINT32(x) return UInt32GetDatum(x)
321 #define PG_RETURN_INT16(x) return Int16GetDatum(x)
322 #define PG_RETURN_UINT16(x) return UInt16GetDatum(x)
323 #define PG_RETURN_CHAR(x) return CharGetDatum(x)
324 #define PG_RETURN_BOOL(x) return BoolGetDatum(x)
325 #define PG_RETURN_OID(x) return ObjectIdGetDatum(x)
326 #define PG_RETURN_POINTER(x) return PointerGetDatum(x)
327 #define PG_RETURN_CSTRING(x) return CStringGetDatum(x)
328 #define PG_RETURN_NAME(x) return NameGetDatum(x)
329 /* these macros hide the pass-by-reference-ness of the datatype: */
330 #define PG_RETURN_FLOAT4(x) return Float4GetDatum(x)
331 #define PG_RETURN_FLOAT8(x) return Float8GetDatum(x)
332 #define PG_RETURN_INT64(x) return Int64GetDatum(x)
333 #define PG_RETURN_UINT64(x) return UInt64GetDatum(x)
334 /* RETURN macros for other pass-by-ref types will typically look like this: */
335 #define PG_RETURN_BYTEA_P(x) PG_RETURN_POINTER(x)
336 #define PG_RETURN_TEXT_P(x) PG_RETURN_POINTER(x)
337 #define PG_RETURN_BPCHAR_P(x) PG_RETURN_POINTER(x)
338 #define PG_RETURN_VARCHAR_P(x) PG_RETURN_POINTER(x)
339 #define PG_RETURN_HEAPTUPLEHEADER(x) return HeapTupleHeaderGetDatum(x)
340 
341 
342 /*-------------------------------------------------------------------------
343  * Support for detecting call convention of dynamically-loaded functions
344  *
345  * Dynamically loaded functions currently can only use the version-1 ("new
346  * style") calling convention. Version-0 ("old style") is not supported
347  * anymore. Version 1 is the call convention defined in this header file, and
348  * must be accompanied by the macro call
349  *
350  * PG_FUNCTION_INFO_V1(function_name);
351  *
352  * Note that internal functions do not need this decoration since they are
353  * assumed to be version-1.
354  *
355  *-------------------------------------------------------------------------
356  */
357 
358 typedef struct
359 {
360  int api_version; /* specifies call convention version number */
361  /* More fields may be added later, for version numbers > 1. */
363 
364 /* Expected signature of an info function */
365 typedef const Pg_finfo_record *(*PGFInfoFunction) (void);
366 
367 /*
368  * Macro to build an info function associated with the given function name.
369  *
370  * As a convenience, also provide an "extern" declaration for the given
371  * function name, so that writers of C functions need not write that too.
372  *
373  * On Windows, the function and info function must be exported. Our normal
374  * build processes take care of that via .DEF files or --export-all-symbols.
375  * Module authors using a different build process might need to manually
376  * declare the function PGDLLEXPORT. We do that automatically here for the
377  * info function, since authors shouldn't need to be explicitly aware of it.
378  */
379 #define PG_FUNCTION_INFO_V1(funcname) \
380 extern Datum funcname(PG_FUNCTION_ARGS); \
381 extern PGDLLEXPORT const Pg_finfo_record * CppConcat(pg_finfo_,funcname)(void); \
382 const Pg_finfo_record * \
383 CppConcat(pg_finfo_,funcname) (void) \
384 { \
385  static const Pg_finfo_record my_finfo = { 1 }; \
386  return &my_finfo; \
387 } \
388 extern int no_such_variable
389 
390 
391 /*-------------------------------------------------------------------------
392  * Support for verifying backend compatibility of loaded modules
393  *
394  * We require dynamically-loaded modules to include the macro call
395  * PG_MODULE_MAGIC;
396  * so that we can check for obvious incompatibility, such as being compiled
397  * for a different major PostgreSQL version.
398  *
399  * To compile with versions of PostgreSQL that do not support this,
400  * you may put an #ifdef/#endif test around it. Note that in a multiple-
401  * source-file module, the macro call should only appear once.
402  *
403  * The specific items included in the magic block are intended to be ones that
404  * are custom-configurable and especially likely to break dynamically loaded
405  * modules if they were compiled with other values. Also, the length field
406  * can be used to detect definition changes.
407  *
408  * Note: we compare magic blocks with memcmp(), so there had better not be
409  * any alignment pad bytes in them.
410  *
411  * Note: when changing the contents of magic blocks, be sure to adjust the
412  * incompatible_module_error() function in dfmgr.c.
413  *-------------------------------------------------------------------------
414  */
415 
416 /* Definition of the magic block structure */
417 typedef struct
418 {
419  int len; /* sizeof(this struct) */
420  int version; /* PostgreSQL major version */
421  int funcmaxargs; /* FUNC_MAX_ARGS */
422  int indexmaxkeys; /* INDEX_MAX_KEYS */
423  int namedatalen; /* NAMEDATALEN */
424  int float4byval; /* FLOAT4PASSBYVAL */
425  int float8byval; /* FLOAT8PASSBYVAL */
427 
428 /* The actual data block contents */
429 #define PG_MODULE_MAGIC_DATA \
430 { \
431  sizeof(Pg_magic_struct), \
432  PG_VERSION_NUM / 100, \
433  FUNC_MAX_ARGS, \
434  INDEX_MAX_KEYS, \
435  NAMEDATALEN, \
436  FLOAT4PASSBYVAL, \
437  FLOAT8PASSBYVAL \
438 }
439 
440 /*
441  * Declare the module magic function. It needs to be a function as the dlsym
442  * in the backend is only guaranteed to work on functions, not data
443  */
444 typedef const Pg_magic_struct *(*PGModuleMagicFunction) (void);
445 
446 #define PG_MAGIC_FUNCTION_NAME Pg_magic_func
447 #define PG_MAGIC_FUNCTION_NAME_STRING "Pg_magic_func"
448 
449 #define PG_MODULE_MAGIC \
450 extern PGDLLEXPORT const Pg_magic_struct *PG_MAGIC_FUNCTION_NAME(void); \
451 const Pg_magic_struct * \
452 PG_MAGIC_FUNCTION_NAME(void) \
453 { \
454  static const Pg_magic_struct Pg_magic_data = PG_MODULE_MAGIC_DATA; \
455  return &Pg_magic_data; \
456 } \
457 extern int no_such_variable
458 
459 
460 /*-------------------------------------------------------------------------
461  * Support routines and macros for callers of fmgr-compatible functions
462  *-------------------------------------------------------------------------
463  */
464 
465 /* These are for invocation of a specifically named function with a
466  * directly-computed parameter list. Note that neither arguments nor result
467  * are allowed to be NULL.
468  */
469 extern Datum DirectFunctionCall1Coll(PGFunction func, Oid collation,
470  Datum arg1);
471 extern Datum DirectFunctionCall2Coll(PGFunction func, Oid collation,
472  Datum arg1, Datum arg2);
473 extern Datum DirectFunctionCall3Coll(PGFunction func, Oid collation,
474  Datum arg1, Datum arg2,
475  Datum arg3);
476 extern Datum DirectFunctionCall4Coll(PGFunction func, Oid collation,
477  Datum arg1, Datum arg2,
478  Datum arg3, Datum arg4);
479 extern Datum DirectFunctionCall5Coll(PGFunction func, Oid collation,
480  Datum arg1, Datum arg2,
481  Datum arg3, Datum arg4, Datum arg5);
482 extern Datum DirectFunctionCall6Coll(PGFunction func, Oid collation,
483  Datum arg1, Datum arg2,
484  Datum arg3, Datum arg4, Datum arg5,
485  Datum arg6);
486 extern Datum DirectFunctionCall7Coll(PGFunction func, Oid collation,
487  Datum arg1, Datum arg2,
488  Datum arg3, Datum arg4, Datum arg5,
489  Datum arg6, Datum arg7);
490 extern Datum DirectFunctionCall8Coll(PGFunction func, Oid collation,
491  Datum arg1, Datum arg2,
492  Datum arg3, Datum arg4, Datum arg5,
493  Datum arg6, Datum arg7, Datum arg8);
494 extern Datum DirectFunctionCall9Coll(PGFunction func, Oid collation,
495  Datum arg1, Datum arg2,
496  Datum arg3, Datum arg4, Datum arg5,
497  Datum arg6, Datum arg7, Datum arg8,
498  Datum arg9);
499 
500 /*
501  * These functions work like the DirectFunctionCall functions except that
502  * they use the flinfo parameter to initialise the fcinfo for the call.
503  * It's recommended that the callee only use the fn_extra and fn_mcxt
504  * fields, as other fields will typically describe the calling function
505  * not the callee. Conversely, the calling function should not have
506  * used fn_extra, unless its use is known to be compatible with the callee's.
507  */
509  Oid collation, Datum arg1);
511  Oid collation, Datum arg1, Datum arg2);
512 
513 /* These are for invocation of a previously-looked-up function with a
514  * directly-computed parameter list. Note that neither arguments nor result
515  * are allowed to be NULL.
516  */
517 extern Datum FunctionCall1Coll(FmgrInfo *flinfo, Oid collation,
518  Datum arg1);
519 extern Datum FunctionCall2Coll(FmgrInfo *flinfo, Oid collation,
520  Datum arg1, Datum arg2);
521 extern Datum FunctionCall3Coll(FmgrInfo *flinfo, Oid collation,
522  Datum arg1, Datum arg2,
523  Datum arg3);
524 extern Datum FunctionCall4Coll(FmgrInfo *flinfo, Oid collation,
525  Datum arg1, Datum arg2,
526  Datum arg3, Datum arg4);
527 extern Datum FunctionCall5Coll(FmgrInfo *flinfo, Oid collation,
528  Datum arg1, Datum arg2,
529  Datum arg3, Datum arg4, Datum arg5);
530 extern Datum FunctionCall6Coll(FmgrInfo *flinfo, Oid collation,
531  Datum arg1, Datum arg2,
532  Datum arg3, Datum arg4, Datum arg5,
533  Datum arg6);
534 extern Datum FunctionCall7Coll(FmgrInfo *flinfo, Oid collation,
535  Datum arg1, Datum arg2,
536  Datum arg3, Datum arg4, Datum arg5,
537  Datum arg6, Datum arg7);
538 extern Datum FunctionCall8Coll(FmgrInfo *flinfo, Oid collation,
539  Datum arg1, Datum arg2,
540  Datum arg3, Datum arg4, Datum arg5,
541  Datum arg6, Datum arg7, Datum arg8);
542 extern Datum FunctionCall9Coll(FmgrInfo *flinfo, Oid collation,
543  Datum arg1, Datum arg2,
544  Datum arg3, Datum arg4, Datum arg5,
545  Datum arg6, Datum arg7, Datum arg8,
546  Datum arg9);
547 
548 /* These are for invocation of a function identified by OID with a
549  * directly-computed parameter list. Note that neither arguments nor result
550  * are allowed to be NULL. These are essentially fmgr_info() followed by
551  * FunctionCallN(). If the same function is to be invoked repeatedly, do the
552  * fmgr_info() once and then use FunctionCallN().
553  */
554 extern Datum OidFunctionCall0Coll(Oid functionId, Oid collation);
555 extern Datum OidFunctionCall1Coll(Oid functionId, Oid collation,
556  Datum arg1);
557 extern Datum OidFunctionCall2Coll(Oid functionId, Oid collation,
558  Datum arg1, Datum arg2);
559 extern Datum OidFunctionCall3Coll(Oid functionId, Oid collation,
560  Datum arg1, Datum arg2,
561  Datum arg3);
562 extern Datum OidFunctionCall4Coll(Oid functionId, Oid collation,
563  Datum arg1, Datum arg2,
564  Datum arg3, Datum arg4);
565 extern Datum OidFunctionCall5Coll(Oid functionId, Oid collation,
566  Datum arg1, Datum arg2,
567  Datum arg3, Datum arg4, Datum arg5);
568 extern Datum OidFunctionCall6Coll(Oid functionId, Oid collation,
569  Datum arg1, Datum arg2,
570  Datum arg3, Datum arg4, Datum arg5,
571  Datum arg6);
572 extern Datum OidFunctionCall7Coll(Oid functionId, Oid collation,
573  Datum arg1, Datum arg2,
574  Datum arg3, Datum arg4, Datum arg5,
575  Datum arg6, Datum arg7);
576 extern Datum OidFunctionCall8Coll(Oid functionId, Oid collation,
577  Datum arg1, Datum arg2,
578  Datum arg3, Datum arg4, Datum arg5,
579  Datum arg6, Datum arg7, Datum arg8);
580 extern Datum OidFunctionCall9Coll(Oid functionId, Oid collation,
581  Datum arg1, Datum arg2,
582  Datum arg3, Datum arg4, Datum arg5,
583  Datum arg6, Datum arg7, Datum arg8,
584  Datum arg9);
585 
586 /* These macros allow the collation argument to be omitted (with a default of
587  * InvalidOid, ie, no collation). They exist mostly for backwards
588  * compatibility of source code.
589  */
590 #define DirectFunctionCall1(func, arg1) \
591  DirectFunctionCall1Coll(func, InvalidOid, arg1)
592 #define DirectFunctionCall2(func, arg1, arg2) \
593  DirectFunctionCall2Coll(func, InvalidOid, arg1, arg2)
594 #define DirectFunctionCall3(func, arg1, arg2, arg3) \
595  DirectFunctionCall3Coll(func, InvalidOid, arg1, arg2, arg3)
596 #define DirectFunctionCall4(func, arg1, arg2, arg3, arg4) \
597  DirectFunctionCall4Coll(func, InvalidOid, arg1, arg2, arg3, arg4)
598 #define DirectFunctionCall5(func, arg1, arg2, arg3, arg4, arg5) \
599  DirectFunctionCall5Coll(func, InvalidOid, arg1, arg2, arg3, arg4, arg5)
600 #define DirectFunctionCall6(func, arg1, arg2, arg3, arg4, arg5, arg6) \
601  DirectFunctionCall6Coll(func, InvalidOid, arg1, arg2, arg3, arg4, arg5, arg6)
602 #define DirectFunctionCall7(func, arg1, arg2, arg3, arg4, arg5, arg6, arg7) \
603  DirectFunctionCall7Coll(func, InvalidOid, arg1, arg2, arg3, arg4, arg5, arg6, arg7)
604 #define DirectFunctionCall8(func, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8) \
605  DirectFunctionCall8Coll(func, InvalidOid, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8)
606 #define DirectFunctionCall9(func, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9) \
607  DirectFunctionCall9Coll(func, InvalidOid, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9)
608 #define FunctionCall1(flinfo, arg1) \
609  FunctionCall1Coll(flinfo, InvalidOid, arg1)
610 #define FunctionCall2(flinfo, arg1, arg2) \
611  FunctionCall2Coll(flinfo, InvalidOid, arg1, arg2)
612 #define FunctionCall3(flinfo, arg1, arg2, arg3) \
613  FunctionCall3Coll(flinfo, InvalidOid, arg1, arg2, arg3)
614 #define FunctionCall4(flinfo, arg1, arg2, arg3, arg4) \
615  FunctionCall4Coll(flinfo, InvalidOid, arg1, arg2, arg3, arg4)
616 #define FunctionCall5(flinfo, arg1, arg2, arg3, arg4, arg5) \
617  FunctionCall5Coll(flinfo, InvalidOid, arg1, arg2, arg3, arg4, arg5)
618 #define FunctionCall6(flinfo, arg1, arg2, arg3, arg4, arg5, arg6) \
619  FunctionCall6Coll(flinfo, InvalidOid, arg1, arg2, arg3, arg4, arg5, arg6)
620 #define FunctionCall7(flinfo, arg1, arg2, arg3, arg4, arg5, arg6, arg7) \
621  FunctionCall7Coll(flinfo, InvalidOid, arg1, arg2, arg3, arg4, arg5, arg6, arg7)
622 #define FunctionCall8(flinfo, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8) \
623  FunctionCall8Coll(flinfo, InvalidOid, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8)
624 #define FunctionCall9(flinfo, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9) \
625  FunctionCall9Coll(flinfo, InvalidOid, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9)
626 #define OidFunctionCall0(functionId) \
627  OidFunctionCall0Coll(functionId, InvalidOid)
628 #define OidFunctionCall1(functionId, arg1) \
629  OidFunctionCall1Coll(functionId, InvalidOid, arg1)
630 #define OidFunctionCall2(functionId, arg1, arg2) \
631  OidFunctionCall2Coll(functionId, InvalidOid, arg1, arg2)
632 #define OidFunctionCall3(functionId, arg1, arg2, arg3) \
633  OidFunctionCall3Coll(functionId, InvalidOid, arg1, arg2, arg3)
634 #define OidFunctionCall4(functionId, arg1, arg2, arg3, arg4) \
635  OidFunctionCall4Coll(functionId, InvalidOid, arg1, arg2, arg3, arg4)
636 #define OidFunctionCall5(functionId, arg1, arg2, arg3, arg4, arg5) \
637  OidFunctionCall5Coll(functionId, InvalidOid, arg1, arg2, arg3, arg4, arg5)
638 #define OidFunctionCall6(functionId, arg1, arg2, arg3, arg4, arg5, arg6) \
639  OidFunctionCall6Coll(functionId, InvalidOid, arg1, arg2, arg3, arg4, arg5, arg6)
640 #define OidFunctionCall7(functionId, arg1, arg2, arg3, arg4, arg5, arg6, arg7) \
641  OidFunctionCall7Coll(functionId, InvalidOid, arg1, arg2, arg3, arg4, arg5, arg6, arg7)
642 #define OidFunctionCall8(functionId, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8) \
643  OidFunctionCall8Coll(functionId, InvalidOid, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8)
644 #define OidFunctionCall9(functionId, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9) \
645  OidFunctionCall9Coll(functionId, InvalidOid, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9)
646 
647 
648 /* Special cases for convenient invocation of datatype I/O functions. */
649 extern Datum InputFunctionCall(FmgrInfo *flinfo, char *str,
650  Oid typioparam, int32 typmod);
651 extern Datum OidInputFunctionCall(Oid functionId, char *str,
652  Oid typioparam, int32 typmod);
653 extern char *OutputFunctionCall(FmgrInfo *flinfo, Datum val);
654 extern char *OidOutputFunctionCall(Oid functionId, Datum val);
655 extern Datum ReceiveFunctionCall(FmgrInfo *flinfo, fmStringInfo buf,
656  Oid typioparam, int32 typmod);
657 extern Datum OidReceiveFunctionCall(Oid functionId, fmStringInfo buf,
658  Oid typioparam, int32 typmod);
659 extern bytea *SendFunctionCall(FmgrInfo *flinfo, Datum val);
660 extern bytea *OidSendFunctionCall(Oid functionId, Datum val);
661 
662 
663 /*
664  * Routines in fmgr.c
665  */
666 extern const Pg_finfo_record *fetch_finfo_record(void *filehandle, const char *funcname);
667 extern void clear_external_function_hash(void *filehandle);
668 extern Oid fmgr_internal_function(const char *proname);
669 extern Oid get_fn_expr_rettype(FmgrInfo *flinfo);
670 extern Oid get_fn_expr_argtype(FmgrInfo *flinfo, int argnum);
671 extern Oid get_call_expr_argtype(fmNodePtr expr, int argnum);
672 extern bool get_fn_expr_arg_stable(FmgrInfo *flinfo, int argnum);
673 extern bool get_call_expr_arg_stable(fmNodePtr expr, int argnum);
674 extern bool get_fn_expr_variadic(FmgrInfo *flinfo);
675 extern bool CheckFunctionValidatorAccess(Oid validatorOid, Oid functionOid);
676 
677 /*
678  * Routines in dfmgr.c
679  */
680 extern char *Dynamic_library_path;
681 
682 extern PGFunction load_external_function(const char *filename, const char *funcname,
683  bool signalNotFound, void **filehandle);
684 extern PGFunction lookup_external_function(void *filehandle, const char *funcname);
685 extern void load_file(const char *filename, bool restricted);
686 extern void **find_rendezvous_variable(const char *varName);
687 extern Size EstimateLibraryStateSpace(void);
688 extern void SerializeLibraryState(Size maxsize, char *start_address);
689 extern void RestoreLibraryState(char *start_address);
690 
691 /*
692  * Support for aggregate functions
693  *
694  * These are actually in executor/nodeAgg.c, but we declare them here since
695  * the whole point is for callers to not be overly friendly with nodeAgg.
696  */
697 
698 /* AggCheckCallContext can return one of the following codes, or 0: */
699 #define AGG_CONTEXT_AGGREGATE 1 /* regular aggregate */
700 #define AGG_CONTEXT_WINDOW 2 /* window function */
701 
702 extern int AggCheckCallContext(FunctionCallInfo fcinfo,
703  MemoryContext *aggcontext);
704 extern fmAggrefPtr AggGetAggref(FunctionCallInfo fcinfo);
705 extern MemoryContext AggGetTempMemoryContext(FunctionCallInfo fcinfo);
706 extern bool AggStateIsShared(FunctionCallInfo fcinfo);
707 extern void AggRegisterCallback(FunctionCallInfo fcinfo,
709  Datum arg);
710 
711 /*
712  * We allow plugin modules to hook function entry/exit. This is intended
713  * as support for loadable security policy modules, which may want to
714  * perform additional privilege checks on function entry or exit, or to do
715  * other internal bookkeeping. To make this possible, such modules must be
716  * able not only to support normal function entry and exit, but also to trap
717  * the case where we bail out due to an error; and they must also be able to
718  * prevent inlining.
719  */
720 typedef enum FmgrHookEventType
721 {
726 
728 
729 typedef void (*fmgr_hook_type) (FmgrHookEventType event,
730  FmgrInfo *flinfo, Datum *arg);
731 
734 
735 #define FmgrHookIsNeeded(fn_oid) \
736  (!needs_fmgr_hook ? false : (*needs_fmgr_hook)(fn_oid))
737 
738 #endif /* FMGR_H */
Datum CallerFInfoFunctionCall2(PGFunction func, FmgrInfo *flinfo, Oid collation, Datum arg1, Datum arg2)
Definition: fmgr.c:1085
int AggCheckCallContext(FunctionCallInfo fcinfo, MemoryContext *aggcontext)
Definition: nodeAgg.c:3492
fmAggrefPtr AggGetAggref(FunctionCallInfo fcinfo)
Definition: nodeAgg.c:3536
void(* fmExprContextCallbackFunction)(Datum arg)
Definition: fmgr.h:26
Datum(* PGFunction)(FunctionCallInfo fcinfo)
Definition: fmgr.h:40
Definition: fmgr.h:56
Oid get_fn_expr_rettype(FmgrInfo *flinfo)
Definition: fmgr.c:1972
PGDLLIMPORT fmgr_hook_type fmgr_hook
Definition: fmgr.c:37
Datum OidFunctionCall9Coll(Oid functionId, Oid collation, Datum arg1, Datum arg2, Datum arg3, Datum arg4, Datum arg5, Datum arg6, Datum arg7, Datum arg8, Datum arg9)
Definition: fmgr.c:1653
short fn_nargs
Definition: fmgr.h:60
struct StringInfoData * fmStringInfo
Definition: fmgr.h:29
bool get_call_expr_arg_stable(fmNodePtr expr, int argnum)
MemoryContext fn_mcxt
Definition: fmgr.h:65
int indexmaxkeys
Definition: fmgr.h:422
char * OutputFunctionCall(FmgrInfo *flinfo, Datum val)
Definition: fmgr.c:1752
Oid get_call_expr_argtype(fmNodePtr expr, int argnum)
PGFunction fn_addr
Definition: fmgr.h:58
Datum FunctionCall2Coll(FmgrInfo *flinfo, Oid collation, Datum arg1, Datum arg2)
Definition: fmgr.c:1132
void(* fmgr_hook_type)(FmgrHookEventType event, FmgrInfo *flinfo, Datum *arg)
Definition: fmgr.h:729
fmNodePtr context
Definition: fmgr.h:80
struct FunctionCallInfoData FunctionCallInfoData
Datum DirectFunctionCall8Coll(PGFunction func, Oid collation, Datum arg1, Datum arg2, Datum arg3, Datum arg4, Datum arg5, Datum arg6, Datum arg7, Datum arg8)
Definition: fmgr.c:981
Datum CallerFInfoFunctionCall1(PGFunction func, FmgrInfo *flinfo, Oid collation, Datum arg1)
Definition: fmgr.c:1065
Datum ReceiveFunctionCall(FmgrInfo *flinfo, fmStringInfo buf, Oid typioparam, int32 typmod)
Definition: fmgr.c:1766
int namedatalen
Definition: fmgr.h:423
Datum FunctionCall4Coll(FmgrInfo *flinfo, Oid collation, Datum arg1, Datum arg2, Datum arg3, Datum arg4)
Definition: fmgr.c:1179
Datum DirectFunctionCall4Coll(PGFunction func, Oid collation, Datum arg1, Datum arg2, Datum arg3, Datum arg4)
Definition: fmgr.c:859
Definition: nodes.h:517
char * OidOutputFunctionCall(Oid functionId, Datum val)
Definition: fmgr.c:1832
Datum FunctionCall6Coll(FmgrInfo *flinfo, Oid collation, Datum arg1, Datum arg2, Datum arg3, Datum arg4, Datum arg5, Datum arg6)
Definition: fmgr.c:1235
unsigned int Oid
Definition: postgres_ext.h:31
Datum FunctionCall7Coll(FmgrInfo *flinfo, Oid collation, Datum arg1, Datum arg2, Datum arg3, Datum arg4, Datum arg5, Datum arg6, Datum arg7)
Definition: fmgr.c:1267
Datum OidFunctionCall3Coll(Oid functionId, Oid collation, Datum arg1, Datum arg2, Datum arg3)
Definition: fmgr.c:1452
Datum DirectFunctionCall7Coll(PGFunction func, Oid collation, Datum arg1, Datum arg2, Datum arg3, Datum arg4, Datum arg5, Datum arg6, Datum arg7)
Definition: fmgr.c:947
struct varlena * pg_detoast_datum_packed(struct varlena *datum)
Definition: fmgr.c:1948
#define PGDLLIMPORT
Definition: c.h:1105
char bool
Definition: c.h:275
signed int int32
Definition: c.h:313
#define FUNC_MAX_ARGS
Size EstimateLibraryStateSpace(void)
Definition: dfmgr.c:711
PGFunction lookup_external_function(void *filehandle, const char *funcname)
Definition: dfmgr.c:162
bool get_fn_expr_variadic(FmgrInfo *flinfo)
Definition: fmgr.c:2128
bool AggStateIsShared(FunctionCallInfo fcinfo)
Definition: nodeAgg.c:3596
FmgrInfo * flinfo
Definition: fmgr.h:79
struct Aggref * fmAggrefPtr
Definition: fmgr.h:23
Oid get_fn_expr_argtype(FmgrInfo *flinfo, int argnum)
Definition: fmgr.c:1994
Datum FunctionCall5Coll(FmgrInfo *flinfo, Oid collation, Datum arg1, Datum arg2, Datum arg3, Datum arg4, Datum arg5)
Definition: fmgr.c:1206
bytea * SendFunctionCall(FmgrInfo *flinfo, Datum val)
Definition: fmgr.c:1813
bool fn_retset
Definition: fmgr.h:62
const Pg_finfo_record * fetch_finfo_record(void *filehandle, const char *funcname)
Definition: fmgr.c:469
void fmgr_info_copy(FmgrInfo *dstinfo, FmgrInfo *srcinfo, MemoryContext destcxt)
Definition: fmgr.c:609
bool fn_strict
Definition: fmgr.h:61
void fmgr_info_cxt(Oid functionId, FmgrInfo *finfo, MemoryContext mcxt)
Definition: fmgr.c:133
MemoryContext AggGetTempMemoryContext(FunctionCallInfo fcinfo)
Definition: nodeAgg.c:3570
bool(* needs_fmgr_hook_type)(Oid fn_oid)
Definition: fmgr.h:727
struct FunctionCallInfoData * FunctionCallInfo
Definition: fmgr.h:38
Datum DirectFunctionCall2Coll(PGFunction func, Oid collation, Datum arg1, Datum arg2)
Definition: fmgr.c:812
Datum OidFunctionCall1Coll(Oid functionId, Oid collation, Datum arg1)
Definition: fmgr.c:1404
bool CheckFunctionValidatorAccess(Oid validatorOid, Oid functionOid)
Definition: fmgr.c:2178
static char * buf
Definition: pg_test_fsync.c:67
FmgrHookEventType
Definition: fmgr.h:720
Datum OidFunctionCall6Coll(Oid functionId, Oid collation, Datum arg1, Datum arg2, Datum arg3, Datum arg4, Datum arg5, Datum arg6)
Definition: fmgr.c:1542
int funcmaxargs
Definition: fmgr.h:421
fmNodePtr resultinfo
Definition: fmgr.h:81
Definition: fmgr.h:723
PGDLLIMPORT needs_fmgr_hook_type needs_fmgr_hook
Definition: fmgr.c:36
Datum FunctionCall3Coll(FmgrInfo *flinfo, Oid collation, Datum arg1, Datum arg2, Datum arg3)
Definition: fmgr.c:1154
Datum DirectFunctionCall5Coll(PGFunction func, Oid collation, Datum arg1, Datum arg2, Datum arg3, Datum arg4, Datum arg5)
Definition: fmgr.c:886
Datum OidFunctionCall2Coll(Oid functionId, Oid collation, Datum arg1, Datum arg2)
Definition: fmgr.c:1427
int float8byval
Definition: fmgr.h:425
Datum InputFunctionCall(FmgrInfo *flinfo, char *str, Oid typioparam, int32 typmod)
Definition: fmgr.c:1708
uintptr_t Datum
Definition: postgres.h:365
void fmgr_info(Oid functionId, FmgrInfo *finfo)
Definition: fmgr.c:123
Datum OidReceiveFunctionCall(Oid functionId, fmStringInfo buf, Oid typioparam, int32 typmod)
Definition: fmgr.c:1841
Oid fn_oid
Definition: fmgr.h:59
void clear_external_function_hash(void *filehandle)
Definition: fmgr.c:593
void load_file(const char *filename, bool restricted)
Definition: dfmgr.c:137
static void * fn(void *arg)
void AggRegisterCallback(FunctionCallInfo fcinfo, fmExprContextCallbackFunction func, Datum arg)
Definition: nodeAgg.c:3635
void ** find_rendezvous_variable(const char *varName)
Definition: dfmgr.c:672
Datum DirectFunctionCall6Coll(PGFunction func, Oid collation, Datum arg1, Datum arg2, Datum arg3, Datum arg4, Datum arg5, Datum arg6)
Definition: fmgr.c:915
struct varlena * pg_detoast_datum_copy(struct varlena *datum)
Definition: fmgr.c:1925
void fmgr_symbol(Oid functionId, char **mod, char **fn)
Definition: fmgr.c:280
fmNodePtr fn_expr
Definition: fmgr.h:66
Datum DirectFunctionCall9Coll(PGFunction func, Oid collation, Datum arg1, Datum arg2, Datum arg3, Datum arg4, Datum arg5, Datum arg6, Datum arg7, Datum arg8, Datum arg9)
Definition: fmgr.c:1017
Datum OidFunctionCall4Coll(Oid functionId, Oid collation, Datum arg1, Datum arg2, Datum arg3, Datum arg4)
Definition: fmgr.c:1480
Datum FunctionCall8Coll(FmgrInfo *flinfo, Oid collation, Datum arg1, Datum arg2, Datum arg3, Datum arg4, Datum arg5, Datum arg6, Datum arg7, Datum arg8)
Definition: fmgr.c:1301
size_t Size
Definition: c.h:433
struct FmgrInfo FmgrInfo
struct Node * fmNodePtr
Definition: fmgr.h:22
Datum FunctionCall1Coll(FmgrInfo *flinfo, Oid collation, Datum arg1)
Definition: fmgr.c:1112
void * fn_extra
Definition: fmgr.h:64
int float4byval
Definition: fmgr.h:424
Datum OidInputFunctionCall(Oid functionId, char *str, Oid typioparam, int32 typmod)
Definition: fmgr.c:1823
static char * filename
Definition: pg_dumpall.c:87
void RestoreLibraryState(char *start_address)
Definition: dfmgr.c:750
void SerializeLibraryState(Size maxsize, char *start_address)
Definition: dfmgr.c:728
PGFunction load_external_function(const char *filename, const char *funcname, bool signalNotFound, void **filehandle)
Definition: dfmgr.c:94
unsigned char fn_stats
Definition: fmgr.h:63
bytea * OidSendFunctionCall(Oid functionId, Datum val)
Definition: fmgr.c:1851
bool get_fn_expr_arg_stable(FmgrInfo *flinfo, int argnum)
Definition: fmgr.c:2059
void * arg
Definition: c.h:516
Datum OidFunctionCall0Coll(Oid functionId, Oid collation)
Definition: fmgr.c:1384
Datum OidFunctionCall5Coll(Oid functionId, Oid collation, Datum arg1, Datum arg2, Datum arg3, Datum arg4, Datum arg5)
Definition: fmgr.c:1510
Datum DirectFunctionCall3Coll(PGFunction func, Oid collation, Datum arg1, Datum arg2, Datum arg3)
Definition: fmgr.c:834
Datum DirectFunctionCall1Coll(PGFunction func, Oid collation, Datum arg1)
Definition: fmgr.c:792
Oid fmgr_internal_function(const char *proname)
Definition: fmgr.c:624
struct varlena * pg_detoast_datum(struct varlena *datum)
Definition: fmgr.c:1916
struct varlena * pg_detoast_datum_slice(struct varlena *datum, int32 first, int32 count)
Definition: fmgr.c:1941
Datum OidFunctionCall7Coll(Oid functionId, Oid collation, Datum arg1, Datum arg2, Datum arg3, Datum arg4, Datum arg5, Datum arg6, Datum arg7)
Definition: fmgr.c:1577
int api_version
Definition: fmgr.h:360
long val
Definition: informix.c:689
char * Dynamic_library_path
Definition: dfmgr.c:64
Datum OidFunctionCall8Coll(Oid functionId, Oid collation, Datum arg1, Datum arg2, Datum arg3, Datum arg4, Datum arg5, Datum arg6, Datum arg7, Datum arg8)
Definition: fmgr.c:1614
int version
Definition: fmgr.h:420
Datum FunctionCall9Coll(FmgrInfo *flinfo, Oid collation, Datum arg1, Datum arg2, Datum arg3, Datum arg4, Datum arg5, Datum arg6, Datum arg7, Datum arg8, Datum arg9)
Definition: fmgr.c:1337