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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) 1996-2017, 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 typedef struct FmgrInfo
54 {
55  PGFunction fn_addr; /* pointer to function or handler to be called */
56  Oid fn_oid; /* OID of function (NOT of handler, if any) */
57  short fn_nargs; /* number of input args (0..FUNC_MAX_ARGS) */
58  bool fn_strict; /* function is "strict" (NULL in => NULL out) */
59  bool fn_retset; /* function returns a set */
60  unsigned char fn_stats; /* collect stats if track_functions > this */
61  void *fn_extra; /* extra space for use by handler */
62  MemoryContext fn_mcxt; /* memory context to store fn_extra in */
63  fmNodePtr fn_expr; /* expression parse tree for call, or NULL */
64 } FmgrInfo;
65 
66 /*
67  * This struct is the data actually passed to an fmgr-called function.
68  */
69 typedef struct FunctionCallInfoData
70 {
71  FmgrInfo *flinfo; /* ptr to lookup info used for this call */
72  fmNodePtr context; /* pass info about context of call */
73  fmNodePtr resultinfo; /* pass or return extra info about result */
74  Oid fncollation; /* collation for function to use */
75  bool isnull; /* function must set true if result is NULL */
76  short nargs; /* # arguments actually passed */
77  Datum arg[FUNC_MAX_ARGS]; /* Arguments passed to function */
78  bool argnull[FUNC_MAX_ARGS]; /* T if arg[i] is actually NULL */
80 
81 /*
82  * This routine fills a FmgrInfo struct, given the OID
83  * of the function to be called.
84  */
85 extern void fmgr_info(Oid functionId, FmgrInfo *finfo);
86 
87 /*
88  * Same, when the FmgrInfo struct is in a memory context longer-lived than
89  * CurrentMemoryContext. The specified context will be set as fn_mcxt
90  * and used to hold all subsidiary data of finfo.
91  */
92 extern void fmgr_info_cxt(Oid functionId, FmgrInfo *finfo,
93  MemoryContext mcxt);
94 
95 /* Convenience macro for setting the fn_expr field */
96 #define fmgr_info_set_expr(expr, finfo) \
97  ((finfo)->fn_expr = (expr))
98 
99 /*
100  * Copy an FmgrInfo struct
101  */
102 extern void fmgr_info_copy(FmgrInfo *dstinfo, FmgrInfo *srcinfo,
103  MemoryContext destcxt);
104 
105 /*
106  * This macro initializes all the fields of a FunctionCallInfoData except
107  * for the arg[] and argnull[] arrays. Performance testing has shown that
108  * the fastest way to set up argnull[] for small numbers of arguments is to
109  * explicitly set each required element to false, so we don't try to zero
110  * out the argnull[] array in the macro.
111  */
112 #define InitFunctionCallInfoData(Fcinfo, Flinfo, Nargs, Collation, Context, Resultinfo) \
113  do { \
114  (Fcinfo).flinfo = (Flinfo); \
115  (Fcinfo).context = (Context); \
116  (Fcinfo).resultinfo = (Resultinfo); \
117  (Fcinfo).fncollation = (Collation); \
118  (Fcinfo).isnull = false; \
119  (Fcinfo).nargs = (Nargs); \
120  } while (0)
121 
122 /*
123  * This macro invokes a function given a filled-in FunctionCallInfoData
124  * struct. The macro result is the returned Datum --- but note that
125  * caller must still check fcinfo->isnull! Also, if function is strict,
126  * it is caller's responsibility to verify that no null arguments are present
127  * before calling.
128  */
129 #define FunctionCallInvoke(fcinfo) ((* (fcinfo)->flinfo->fn_addr) (fcinfo))
130 
131 
132 /*-------------------------------------------------------------------------
133  * Support macros to ease writing fmgr-compatible functions
134  *
135  * A C-coded fmgr-compatible function should be declared as
136  *
137  * Datum
138  * function_name(PG_FUNCTION_ARGS)
139  * {
140  * ...
141  * }
142  *
143  * It should access its arguments using appropriate PG_GETARG_xxx macros
144  * and should return its result using PG_RETURN_xxx.
145  *
146  *-------------------------------------------------------------------------
147  */
148 
149 /* Standard parameter list for fmgr-compatible functions */
150 #define PG_FUNCTION_ARGS FunctionCallInfo fcinfo
151 
152 /*
153  * Get collation function should use.
154  */
155 #define PG_GET_COLLATION() (fcinfo->fncollation)
156 
157 /*
158  * Get number of arguments passed to function.
159  */
160 #define PG_NARGS() (fcinfo->nargs)
161 
162 /*
163  * If function is not marked "proisstrict" in pg_proc, it must check for
164  * null arguments using this macro. Do not try to GETARG a null argument!
165  */
166 #define PG_ARGISNULL(n) (fcinfo->argnull[n])
167 
168 /*
169  * Support for fetching detoasted copies of toastable datatypes (all of
170  * which are varlena types). pg_detoast_datum() gives you either the input
171  * datum (if not toasted) or a detoasted copy allocated with palloc().
172  * pg_detoast_datum_copy() always gives you a palloc'd copy --- use it
173  * if you need a modifiable copy of the input. Caller is expected to have
174  * checked for null inputs first, if necessary.
175  *
176  * pg_detoast_datum_packed() will return packed (1-byte header) datums
177  * unmodified. It will still expand an externally toasted or compressed datum.
178  * The resulting datum can be accessed using VARSIZE_ANY() and VARDATA_ANY()
179  * (beware of multiple evaluations in those macros!)
180  *
181  * WARNING: It is only safe to use pg_detoast_datum_packed() and
182  * VARDATA_ANY() if you really don't care about the alignment. Either because
183  * you're working with something like text where the alignment doesn't matter
184  * or because you're not going to access its constituent parts and just use
185  * things like memcpy on it anyways.
186  *
187  * Note: it'd be nice if these could be macros, but I see no way to do that
188  * without evaluating the arguments multiple times, which is NOT acceptable.
189  */
190 extern struct varlena *pg_detoast_datum(struct varlena * datum);
191 extern struct varlena *pg_detoast_datum_copy(struct varlena * datum);
192 extern struct varlena *pg_detoast_datum_slice(struct varlena * datum,
193  int32 first, int32 count);
194 extern struct varlena *pg_detoast_datum_packed(struct varlena * datum);
195 
196 #define PG_DETOAST_DATUM(datum) \
197  pg_detoast_datum((struct varlena *) DatumGetPointer(datum))
198 #define PG_DETOAST_DATUM_COPY(datum) \
199  pg_detoast_datum_copy((struct varlena *) DatumGetPointer(datum))
200 #define PG_DETOAST_DATUM_SLICE(datum,f,c) \
201  pg_detoast_datum_slice((struct varlena *) DatumGetPointer(datum), \
202  (int32) (f), (int32) (c))
203 /* WARNING -- unaligned pointer */
204 #define PG_DETOAST_DATUM_PACKED(datum) \
205  pg_detoast_datum_packed((struct varlena *) DatumGetPointer(datum))
206 
207 /*
208  * Support for cleaning up detoasted copies of inputs. This must only
209  * be used for pass-by-ref datatypes, and normally would only be used
210  * for toastable types. If the given pointer is different from the
211  * original argument, assume it's a palloc'd detoasted copy, and pfree it.
212  * NOTE: most functions on toastable types do not have to worry about this,
213  * but we currently require that support functions for indexes not leak
214  * memory.
215  */
216 #define PG_FREE_IF_COPY(ptr,n) \
217  do { \
218  if ((Pointer) (ptr) != PG_GETARG_POINTER(n)) \
219  pfree(ptr); \
220  } while (0)
221 
222 /* Macros for fetching arguments of standard types */
223 
224 #define PG_GETARG_DATUM(n) (fcinfo->arg[n])
225 #define PG_GETARG_INT32(n) DatumGetInt32(PG_GETARG_DATUM(n))
226 #define PG_GETARG_UINT32(n) DatumGetUInt32(PG_GETARG_DATUM(n))
227 #define PG_GETARG_INT16(n) DatumGetInt16(PG_GETARG_DATUM(n))
228 #define PG_GETARG_UINT16(n) DatumGetUInt16(PG_GETARG_DATUM(n))
229 #define PG_GETARG_CHAR(n) DatumGetChar(PG_GETARG_DATUM(n))
230 #define PG_GETARG_BOOL(n) DatumGetBool(PG_GETARG_DATUM(n))
231 #define PG_GETARG_OID(n) DatumGetObjectId(PG_GETARG_DATUM(n))
232 #define PG_GETARG_POINTER(n) DatumGetPointer(PG_GETARG_DATUM(n))
233 #define PG_GETARG_CSTRING(n) DatumGetCString(PG_GETARG_DATUM(n))
234 #define PG_GETARG_NAME(n) DatumGetName(PG_GETARG_DATUM(n))
235 /* these macros hide the pass-by-reference-ness of the datatype: */
236 #define PG_GETARG_FLOAT4(n) DatumGetFloat4(PG_GETARG_DATUM(n))
237 #define PG_GETARG_FLOAT8(n) DatumGetFloat8(PG_GETARG_DATUM(n))
238 #define PG_GETARG_INT64(n) DatumGetInt64(PG_GETARG_DATUM(n))
239 /* use this if you want the raw, possibly-toasted input datum: */
240 #define PG_GETARG_RAW_VARLENA_P(n) ((struct varlena *) PG_GETARG_POINTER(n))
241 /* use this if you want the input datum de-toasted: */
242 #define PG_GETARG_VARLENA_P(n) PG_DETOAST_DATUM(PG_GETARG_DATUM(n))
243 /* and this if you can handle 1-byte-header datums: */
244 #define PG_GETARG_VARLENA_PP(n) PG_DETOAST_DATUM_PACKED(PG_GETARG_DATUM(n))
245 /* DatumGetFoo macros for varlena types will typically look like this: */
246 #define DatumGetByteaP(X) ((bytea *) PG_DETOAST_DATUM(X))
247 #define DatumGetByteaPP(X) ((bytea *) PG_DETOAST_DATUM_PACKED(X))
248 #define DatumGetTextP(X) ((text *) PG_DETOAST_DATUM(X))
249 #define DatumGetTextPP(X) ((text *) PG_DETOAST_DATUM_PACKED(X))
250 #define DatumGetBpCharP(X) ((BpChar *) PG_DETOAST_DATUM(X))
251 #define DatumGetBpCharPP(X) ((BpChar *) PG_DETOAST_DATUM_PACKED(X))
252 #define DatumGetVarCharP(X) ((VarChar *) PG_DETOAST_DATUM(X))
253 #define DatumGetVarCharPP(X) ((VarChar *) PG_DETOAST_DATUM_PACKED(X))
254 #define DatumGetHeapTupleHeader(X) ((HeapTupleHeader) PG_DETOAST_DATUM(X))
255 /* And we also offer variants that return an OK-to-write copy */
256 #define DatumGetByteaPCopy(X) ((bytea *) PG_DETOAST_DATUM_COPY(X))
257 #define DatumGetTextPCopy(X) ((text *) PG_DETOAST_DATUM_COPY(X))
258 #define DatumGetBpCharPCopy(X) ((BpChar *) PG_DETOAST_DATUM_COPY(X))
259 #define DatumGetVarCharPCopy(X) ((VarChar *) PG_DETOAST_DATUM_COPY(X))
260 #define DatumGetHeapTupleHeaderCopy(X) ((HeapTupleHeader) PG_DETOAST_DATUM_COPY(X))
261 /* Variants which return n bytes starting at pos. m */
262 #define DatumGetByteaPSlice(X,m,n) ((bytea *) PG_DETOAST_DATUM_SLICE(X,m,n))
263 #define DatumGetTextPSlice(X,m,n) ((text *) PG_DETOAST_DATUM_SLICE(X,m,n))
264 #define DatumGetBpCharPSlice(X,m,n) ((BpChar *) PG_DETOAST_DATUM_SLICE(X,m,n))
265 #define DatumGetVarCharPSlice(X,m,n) ((VarChar *) PG_DETOAST_DATUM_SLICE(X,m,n))
266 /* GETARG macros for varlena types will typically look like this: */
267 #define PG_GETARG_BYTEA_P(n) DatumGetByteaP(PG_GETARG_DATUM(n))
268 #define PG_GETARG_BYTEA_PP(n) DatumGetByteaPP(PG_GETARG_DATUM(n))
269 #define PG_GETARG_TEXT_P(n) DatumGetTextP(PG_GETARG_DATUM(n))
270 #define PG_GETARG_TEXT_PP(n) DatumGetTextPP(PG_GETARG_DATUM(n))
271 #define PG_GETARG_BPCHAR_P(n) DatumGetBpCharP(PG_GETARG_DATUM(n))
272 #define PG_GETARG_BPCHAR_PP(n) DatumGetBpCharPP(PG_GETARG_DATUM(n))
273 #define PG_GETARG_VARCHAR_P(n) DatumGetVarCharP(PG_GETARG_DATUM(n))
274 #define PG_GETARG_VARCHAR_PP(n) DatumGetVarCharPP(PG_GETARG_DATUM(n))
275 #define PG_GETARG_HEAPTUPLEHEADER(n) DatumGetHeapTupleHeader(PG_GETARG_DATUM(n))
276 /* And we also offer variants that return an OK-to-write copy */
277 #define PG_GETARG_BYTEA_P_COPY(n) DatumGetByteaPCopy(PG_GETARG_DATUM(n))
278 #define PG_GETARG_TEXT_P_COPY(n) DatumGetTextPCopy(PG_GETARG_DATUM(n))
279 #define PG_GETARG_BPCHAR_P_COPY(n) DatumGetBpCharPCopy(PG_GETARG_DATUM(n))
280 #define PG_GETARG_VARCHAR_P_COPY(n) DatumGetVarCharPCopy(PG_GETARG_DATUM(n))
281 #define PG_GETARG_HEAPTUPLEHEADER_COPY(n) DatumGetHeapTupleHeaderCopy(PG_GETARG_DATUM(n))
282 /* And a b-byte slice from position a -also OK to write */
283 #define PG_GETARG_BYTEA_P_SLICE(n,a,b) DatumGetByteaPSlice(PG_GETARG_DATUM(n),a,b)
284 #define PG_GETARG_TEXT_P_SLICE(n,a,b) DatumGetTextPSlice(PG_GETARG_DATUM(n),a,b)
285 #define PG_GETARG_BPCHAR_P_SLICE(n,a,b) DatumGetBpCharPSlice(PG_GETARG_DATUM(n),a,b)
286 #define PG_GETARG_VARCHAR_P_SLICE(n,a,b) DatumGetVarCharPSlice(PG_GETARG_DATUM(n),a,b)
287 
288 /* To return a NULL do this: */
289 #define PG_RETURN_NULL() \
290  do { fcinfo->isnull = true; return (Datum) 0; } while (0)
291 
292 /* A few internal functions return void (which is not the same as NULL!) */
293 #define PG_RETURN_VOID() return (Datum) 0
294 
295 /* Macros for returning results of standard types */
296 
297 #define PG_RETURN_DATUM(x) return (x)
298 #define PG_RETURN_INT32(x) return Int32GetDatum(x)
299 #define PG_RETURN_UINT32(x) return UInt32GetDatum(x)
300 #define PG_RETURN_INT16(x) return Int16GetDatum(x)
301 #define PG_RETURN_UINT16(x) return UInt16GetDatum(x)
302 #define PG_RETURN_CHAR(x) return CharGetDatum(x)
303 #define PG_RETURN_BOOL(x) return BoolGetDatum(x)
304 #define PG_RETURN_OID(x) return ObjectIdGetDatum(x)
305 #define PG_RETURN_POINTER(x) return PointerGetDatum(x)
306 #define PG_RETURN_CSTRING(x) return CStringGetDatum(x)
307 #define PG_RETURN_NAME(x) return NameGetDatum(x)
308 /* these macros hide the pass-by-reference-ness of the datatype: */
309 #define PG_RETURN_FLOAT4(x) return Float4GetDatum(x)
310 #define PG_RETURN_FLOAT8(x) return Float8GetDatum(x)
311 #define PG_RETURN_INT64(x) return Int64GetDatum(x)
312 /* RETURN macros for other pass-by-ref types will typically look like this: */
313 #define PG_RETURN_BYTEA_P(x) PG_RETURN_POINTER(x)
314 #define PG_RETURN_TEXT_P(x) PG_RETURN_POINTER(x)
315 #define PG_RETURN_BPCHAR_P(x) PG_RETURN_POINTER(x)
316 #define PG_RETURN_VARCHAR_P(x) PG_RETURN_POINTER(x)
317 #define PG_RETURN_HEAPTUPLEHEADER(x) return HeapTupleHeaderGetDatum(x)
318 
319 
320 /*-------------------------------------------------------------------------
321  * Support for detecting call convention of dynamically-loaded functions
322  *
323  * Dynamically loaded functions may use either the version-1 ("new style")
324  * or version-0 ("old style") calling convention. Version 1 is the call
325  * convention defined in this header file; version 0 is the old "plain C"
326  * convention. A version-1 function must be accompanied by the macro call
327  *
328  * PG_FUNCTION_INFO_V1(function_name);
329  *
330  * Note that internal functions do not need this decoration since they are
331  * assumed to be version-1.
332  *
333  *-------------------------------------------------------------------------
334  */
335 
336 typedef struct
337 {
338  int api_version; /* specifies call convention version number */
339  /* More fields may be added later, for version numbers > 1. */
341 
342 /* Expected signature of an info function */
343 typedef const Pg_finfo_record *(*PGFInfoFunction) (void);
344 
345 /*
346  * Macro to build an info function associated with the given function name.
347  *
348  * As a convenience, also provide an "extern" declaration for the given
349  * function name, so that writers of C functions need not write that too.
350  *
351  * On Windows, the function and info function must be exported. Our normal
352  * build processes take care of that via .DEF files or --export-all-symbols.
353  * Module authors using a different build process might need to manually
354  * declare the function PGDLLEXPORT. We do that automatically here for the
355  * info function, since authors shouldn't need to be explicitly aware of it.
356  */
357 #define PG_FUNCTION_INFO_V1(funcname) \
358 extern Datum funcname(PG_FUNCTION_ARGS); \
359 extern PGDLLEXPORT const Pg_finfo_record * CppConcat(pg_finfo_,funcname)(void); \
360 const Pg_finfo_record * \
361 CppConcat(pg_finfo_,funcname) (void) \
362 { \
363  static const Pg_finfo_record my_finfo = { 1 }; \
364  return &my_finfo; \
365 } \
366 extern int no_such_variable
367 
368 
369 /*-------------------------------------------------------------------------
370  * Support for verifying backend compatibility of loaded modules
371  *
372  * We require dynamically-loaded modules to include the macro call
373  * PG_MODULE_MAGIC;
374  * so that we can check for obvious incompatibility, such as being compiled
375  * for a different major PostgreSQL version.
376  *
377  * To compile with versions of PostgreSQL that do not support this,
378  * you may put an #ifdef/#endif test around it. Note that in a multiple-
379  * source-file module, the macro call should only appear once.
380  *
381  * The specific items included in the magic block are intended to be ones that
382  * are custom-configurable and especially likely to break dynamically loaded
383  * modules if they were compiled with other values. Also, the length field
384  * can be used to detect definition changes.
385  *
386  * Note: we compare magic blocks with memcmp(), so there had better not be
387  * any alignment pad bytes in them.
388  *
389  * Note: when changing the contents of magic blocks, be sure to adjust the
390  * incompatible_module_error() function in dfmgr.c.
391  *-------------------------------------------------------------------------
392  */
393 
394 /* Definition of the magic block structure */
395 typedef struct
396 {
397  int len; /* sizeof(this struct) */
398  int version; /* PostgreSQL major version */
399  int funcmaxargs; /* FUNC_MAX_ARGS */
400  int indexmaxkeys; /* INDEX_MAX_KEYS */
401  int namedatalen; /* NAMEDATALEN */
402  int float4byval; /* FLOAT4PASSBYVAL */
403  int float8byval; /* FLOAT8PASSBYVAL */
405 
406 /* The actual data block contents */
407 #define PG_MODULE_MAGIC_DATA \
408 { \
409  sizeof(Pg_magic_struct), \
410  PG_VERSION_NUM / 100, \
411  FUNC_MAX_ARGS, \
412  INDEX_MAX_KEYS, \
413  NAMEDATALEN, \
414  FLOAT4PASSBYVAL, \
415  FLOAT8PASSBYVAL \
416 }
417 
418 /*
419  * Declare the module magic function. It needs to be a function as the dlsym
420  * in the backend is only guaranteed to work on functions, not data
421  */
422 typedef const Pg_magic_struct *(*PGModuleMagicFunction) (void);
423 
424 #define PG_MAGIC_FUNCTION_NAME Pg_magic_func
425 #define PG_MAGIC_FUNCTION_NAME_STRING "Pg_magic_func"
426 
427 #define PG_MODULE_MAGIC \
428 extern PGDLLEXPORT const Pg_magic_struct *PG_MAGIC_FUNCTION_NAME(void); \
429 const Pg_magic_struct * \
430 PG_MAGIC_FUNCTION_NAME(void) \
431 { \
432  static const Pg_magic_struct Pg_magic_data = PG_MODULE_MAGIC_DATA; \
433  return &Pg_magic_data; \
434 } \
435 extern int no_such_variable
436 
437 
438 /*-------------------------------------------------------------------------
439  * Support routines and macros for callers of fmgr-compatible functions
440  *-------------------------------------------------------------------------
441  */
442 
443 /* These are for invocation of a specifically named function with a
444  * directly-computed parameter list. Note that neither arguments nor result
445  * are allowed to be NULL.
446  */
447 extern Datum DirectFunctionCall1Coll(PGFunction func, Oid collation,
448  Datum arg1);
449 extern Datum DirectFunctionCall2Coll(PGFunction func, Oid collation,
450  Datum arg1, Datum arg2);
451 extern Datum DirectFunctionCall3Coll(PGFunction func, Oid collation,
452  Datum arg1, Datum arg2,
453  Datum arg3);
454 extern Datum DirectFunctionCall4Coll(PGFunction func, Oid collation,
455  Datum arg1, Datum arg2,
456  Datum arg3, Datum arg4);
457 extern Datum DirectFunctionCall5Coll(PGFunction func, Oid collation,
458  Datum arg1, Datum arg2,
459  Datum arg3, Datum arg4, Datum arg5);
460 extern Datum DirectFunctionCall6Coll(PGFunction func, Oid collation,
461  Datum arg1, Datum arg2,
462  Datum arg3, Datum arg4, Datum arg5,
463  Datum arg6);
464 extern Datum DirectFunctionCall7Coll(PGFunction func, Oid collation,
465  Datum arg1, Datum arg2,
466  Datum arg3, Datum arg4, Datum arg5,
467  Datum arg6, Datum arg7);
468 extern Datum DirectFunctionCall8Coll(PGFunction func, Oid collation,
469  Datum arg1, Datum arg2,
470  Datum arg3, Datum arg4, Datum arg5,
471  Datum arg6, Datum arg7, Datum arg8);
472 extern Datum DirectFunctionCall9Coll(PGFunction func, Oid collation,
473  Datum arg1, Datum arg2,
474  Datum arg3, Datum arg4, Datum arg5,
475  Datum arg6, Datum arg7, Datum arg8,
476  Datum arg9);
477 
478 /* These are for invocation of a previously-looked-up function with a
479  * directly-computed parameter list. Note that neither arguments nor result
480  * are allowed to be NULL.
481  */
482 extern Datum FunctionCall1Coll(FmgrInfo *flinfo, Oid collation,
483  Datum arg1);
484 extern Datum FunctionCall2Coll(FmgrInfo *flinfo, Oid collation,
485  Datum arg1, Datum arg2);
486 extern Datum FunctionCall3Coll(FmgrInfo *flinfo, Oid collation,
487  Datum arg1, Datum arg2,
488  Datum arg3);
489 extern Datum FunctionCall4Coll(FmgrInfo *flinfo, Oid collation,
490  Datum arg1, Datum arg2,
491  Datum arg3, Datum arg4);
492 extern Datum FunctionCall5Coll(FmgrInfo *flinfo, Oid collation,
493  Datum arg1, Datum arg2,
494  Datum arg3, Datum arg4, Datum arg5);
495 extern Datum FunctionCall6Coll(FmgrInfo *flinfo, Oid collation,
496  Datum arg1, Datum arg2,
497  Datum arg3, Datum arg4, Datum arg5,
498  Datum arg6);
499 extern Datum FunctionCall7Coll(FmgrInfo *flinfo, Oid collation,
500  Datum arg1, Datum arg2,
501  Datum arg3, Datum arg4, Datum arg5,
502  Datum arg6, Datum arg7);
503 extern Datum FunctionCall8Coll(FmgrInfo *flinfo, Oid collation,
504  Datum arg1, Datum arg2,
505  Datum arg3, Datum arg4, Datum arg5,
506  Datum arg6, Datum arg7, Datum arg8);
507 extern Datum FunctionCall9Coll(FmgrInfo *flinfo, Oid collation,
508  Datum arg1, Datum arg2,
509  Datum arg3, Datum arg4, Datum arg5,
510  Datum arg6, Datum arg7, Datum arg8,
511  Datum arg9);
512 
513 /* These are for invocation of a function identified by OID with a
514  * directly-computed parameter list. Note that neither arguments nor result
515  * are allowed to be NULL. These are essentially fmgr_info() followed by
516  * FunctionCallN(). If the same function is to be invoked repeatedly, do the
517  * fmgr_info() once and then use FunctionCallN().
518  */
519 extern Datum OidFunctionCall0Coll(Oid functionId, Oid collation);
520 extern Datum OidFunctionCall1Coll(Oid functionId, Oid collation,
521  Datum arg1);
522 extern Datum OidFunctionCall2Coll(Oid functionId, Oid collation,
523  Datum arg1, Datum arg2);
524 extern Datum OidFunctionCall3Coll(Oid functionId, Oid collation,
525  Datum arg1, Datum arg2,
526  Datum arg3);
527 extern Datum OidFunctionCall4Coll(Oid functionId, Oid collation,
528  Datum arg1, Datum arg2,
529  Datum arg3, Datum arg4);
530 extern Datum OidFunctionCall5Coll(Oid functionId, Oid collation,
531  Datum arg1, Datum arg2,
532  Datum arg3, Datum arg4, Datum arg5);
533 extern Datum OidFunctionCall6Coll(Oid functionId, Oid collation,
534  Datum arg1, Datum arg2,
535  Datum arg3, Datum arg4, Datum arg5,
536  Datum arg6);
537 extern Datum OidFunctionCall7Coll(Oid functionId, Oid collation,
538  Datum arg1, Datum arg2,
539  Datum arg3, Datum arg4, Datum arg5,
540  Datum arg6, Datum arg7);
541 extern Datum OidFunctionCall8Coll(Oid functionId, Oid collation,
542  Datum arg1, Datum arg2,
543  Datum arg3, Datum arg4, Datum arg5,
544  Datum arg6, Datum arg7, Datum arg8);
545 extern Datum OidFunctionCall9Coll(Oid functionId, Oid collation,
546  Datum arg1, Datum arg2,
547  Datum arg3, Datum arg4, Datum arg5,
548  Datum arg6, Datum arg7, Datum arg8,
549  Datum arg9);
550 
551 /* These macros allow the collation argument to be omitted (with a default of
552  * InvalidOid, ie, no collation). They exist mostly for backwards
553  * compatibility of source code.
554  */
555 #define DirectFunctionCall1(func, arg1) \
556  DirectFunctionCall1Coll(func, InvalidOid, arg1)
557 #define DirectFunctionCall2(func, arg1, arg2) \
558  DirectFunctionCall2Coll(func, InvalidOid, arg1, arg2)
559 #define DirectFunctionCall3(func, arg1, arg2, arg3) \
560  DirectFunctionCall3Coll(func, InvalidOid, arg1, arg2, arg3)
561 #define DirectFunctionCall4(func, arg1, arg2, arg3, arg4) \
562  DirectFunctionCall4Coll(func, InvalidOid, arg1, arg2, arg3, arg4)
563 #define DirectFunctionCall5(func, arg1, arg2, arg3, arg4, arg5) \
564  DirectFunctionCall5Coll(func, InvalidOid, arg1, arg2, arg3, arg4, arg5)
565 #define DirectFunctionCall6(func, arg1, arg2, arg3, arg4, arg5, arg6) \
566  DirectFunctionCall6Coll(func, InvalidOid, arg1, arg2, arg3, arg4, arg5, arg6)
567 #define DirectFunctionCall7(func, arg1, arg2, arg3, arg4, arg5, arg6, arg7) \
568  DirectFunctionCall7Coll(func, InvalidOid, arg1, arg2, arg3, arg4, arg5, arg6, arg7)
569 #define DirectFunctionCall8(func, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8) \
570  DirectFunctionCall8Coll(func, InvalidOid, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8)
571 #define DirectFunctionCall9(func, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9) \
572  DirectFunctionCall9Coll(func, InvalidOid, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9)
573 #define FunctionCall1(flinfo, arg1) \
574  FunctionCall1Coll(flinfo, InvalidOid, arg1)
575 #define FunctionCall2(flinfo, arg1, arg2) \
576  FunctionCall2Coll(flinfo, InvalidOid, arg1, arg2)
577 #define FunctionCall3(flinfo, arg1, arg2, arg3) \
578  FunctionCall3Coll(flinfo, InvalidOid, arg1, arg2, arg3)
579 #define FunctionCall4(flinfo, arg1, arg2, arg3, arg4) \
580  FunctionCall4Coll(flinfo, InvalidOid, arg1, arg2, arg3, arg4)
581 #define FunctionCall5(flinfo, arg1, arg2, arg3, arg4, arg5) \
582  FunctionCall5Coll(flinfo, InvalidOid, arg1, arg2, arg3, arg4, arg5)
583 #define FunctionCall6(flinfo, arg1, arg2, arg3, arg4, arg5, arg6) \
584  FunctionCall6Coll(flinfo, InvalidOid, arg1, arg2, arg3, arg4, arg5, arg6)
585 #define FunctionCall7(flinfo, arg1, arg2, arg3, arg4, arg5, arg6, arg7) \
586  FunctionCall7Coll(flinfo, InvalidOid, arg1, arg2, arg3, arg4, arg5, arg6, arg7)
587 #define FunctionCall8(flinfo, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8) \
588  FunctionCall8Coll(flinfo, InvalidOid, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8)
589 #define FunctionCall9(flinfo, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9) \
590  FunctionCall9Coll(flinfo, InvalidOid, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9)
591 #define OidFunctionCall0(functionId) \
592  OidFunctionCall0Coll(functionId, InvalidOid)
593 #define OidFunctionCall1(functionId, arg1) \
594  OidFunctionCall1Coll(functionId, InvalidOid, arg1)
595 #define OidFunctionCall2(functionId, arg1, arg2) \
596  OidFunctionCall2Coll(functionId, InvalidOid, arg1, arg2)
597 #define OidFunctionCall3(functionId, arg1, arg2, arg3) \
598  OidFunctionCall3Coll(functionId, InvalidOid, arg1, arg2, arg3)
599 #define OidFunctionCall4(functionId, arg1, arg2, arg3, arg4) \
600  OidFunctionCall4Coll(functionId, InvalidOid, arg1, arg2, arg3, arg4)
601 #define OidFunctionCall5(functionId, arg1, arg2, arg3, arg4, arg5) \
602  OidFunctionCall5Coll(functionId, InvalidOid, arg1, arg2, arg3, arg4, arg5)
603 #define OidFunctionCall6(functionId, arg1, arg2, arg3, arg4, arg5, arg6) \
604  OidFunctionCall6Coll(functionId, InvalidOid, arg1, arg2, arg3, arg4, arg5, arg6)
605 #define OidFunctionCall7(functionId, arg1, arg2, arg3, arg4, arg5, arg6, arg7) \
606  OidFunctionCall7Coll(functionId, InvalidOid, arg1, arg2, arg3, arg4, arg5, arg6, arg7)
607 #define OidFunctionCall8(functionId, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8) \
608  OidFunctionCall8Coll(functionId, InvalidOid, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8)
609 #define OidFunctionCall9(functionId, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9) \
610  OidFunctionCall9Coll(functionId, InvalidOid, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9)
611 
612 
613 /* Special cases for convenient invocation of datatype I/O functions. */
614 extern Datum InputFunctionCall(FmgrInfo *flinfo, char *str,
615  Oid typioparam, int32 typmod);
616 extern Datum OidInputFunctionCall(Oid functionId, char *str,
617  Oid typioparam, int32 typmod);
618 extern char *OutputFunctionCall(FmgrInfo *flinfo, Datum val);
619 extern char *OidOutputFunctionCall(Oid functionId, Datum val);
620 extern Datum ReceiveFunctionCall(FmgrInfo *flinfo, fmStringInfo buf,
621  Oid typioparam, int32 typmod);
622 extern Datum OidReceiveFunctionCall(Oid functionId, fmStringInfo buf,
623  Oid typioparam, int32 typmod);
624 extern bytea *SendFunctionCall(FmgrInfo *flinfo, Datum val);
625 extern bytea *OidSendFunctionCall(Oid functionId, Datum val);
626 
627 
628 /*
629  * Routines in fmgr.c
630  */
631 extern const Pg_finfo_record *fetch_finfo_record(void *filehandle, char *funcname);
632 extern void clear_external_function_hash(void *filehandle);
633 extern Oid fmgr_internal_function(const char *proname);
634 extern Oid get_fn_expr_rettype(FmgrInfo *flinfo);
635 extern Oid get_fn_expr_argtype(FmgrInfo *flinfo, int argnum);
636 extern Oid get_call_expr_argtype(fmNodePtr expr, int argnum);
637 extern bool get_fn_expr_arg_stable(FmgrInfo *flinfo, int argnum);
638 extern bool get_call_expr_arg_stable(fmNodePtr expr, int argnum);
639 extern bool get_fn_expr_variadic(FmgrInfo *flinfo);
640 extern bool CheckFunctionValidatorAccess(Oid validatorOid, Oid functionOid);
641 
642 /*
643  * Routines in dfmgr.c
644  */
645 extern char *Dynamic_library_path;
646 
647 extern PGFunction load_external_function(char *filename, char *funcname,
648  bool signalNotFound, void **filehandle);
649 extern PGFunction lookup_external_function(void *filehandle, char *funcname);
650 extern void load_file(const char *filename, bool restricted);
651 extern void **find_rendezvous_variable(const char *varName);
652 extern Size EstimateLibraryStateSpace(void);
653 extern void SerializeLibraryState(Size maxsize, char *start_address);
654 extern void RestoreLibraryState(char *start_address);
655 
656 /*
657  * Support for aggregate functions
658  *
659  * These are actually in executor/nodeAgg.c, but we declare them here since
660  * the whole point is for callers to not be overly friendly with nodeAgg.
661  */
662 
663 /* AggCheckCallContext can return one of the following codes, or 0: */
664 #define AGG_CONTEXT_AGGREGATE 1 /* regular aggregate */
665 #define AGG_CONTEXT_WINDOW 2 /* window function */
666 
667 extern int AggCheckCallContext(FunctionCallInfo fcinfo,
668  MemoryContext *aggcontext);
669 extern fmAggrefPtr AggGetAggref(FunctionCallInfo fcinfo);
670 extern MemoryContext AggGetTempMemoryContext(FunctionCallInfo fcinfo);
671 extern void AggRegisterCallback(FunctionCallInfo fcinfo,
673  Datum arg);
674 
675 /*
676  * We allow plugin modules to hook function entry/exit. This is intended
677  * as support for loadable security policy modules, which may want to
678  * perform additional privilege checks on function entry or exit, or to do
679  * other internal bookkeeping. To make this possible, such modules must be
680  * able not only to support normal function entry and exit, but also to trap
681  * the case where we bail out due to an error; and they must also be able to
682  * prevent inlining.
683  */
684 typedef enum FmgrHookEventType
685 {
690 
691 typedef bool (*needs_fmgr_hook_type) (Oid fn_oid);
692 
693 typedef void (*fmgr_hook_type) (FmgrHookEventType event,
694  FmgrInfo *flinfo, Datum *arg);
695 
698 
699 #define FmgrHookIsNeeded(fn_oid) \
700  (!needs_fmgr_hook ? false : (*needs_fmgr_hook)(fn_oid))
701 
702 /*
703  * !!! OLD INTERFACE !!!
704  *
705  * fmgr() is the only remaining vestige of the old-style caller support
706  * functions. It's no longer used anywhere in the Postgres distribution,
707  * but we should leave it around for a release or two to ease the transition
708  * for user-supplied C functions. OidFunctionCallN() replaces it for new
709  * code.
710  */
711 
712 /*
713  * DEPRECATED, DO NOT USE IN NEW CODE
714  */
715 extern char *fmgr(Oid procedureId,...);
716 
717 #endif /* FMGR_H */
int AggCheckCallContext(FunctionCallInfo fcinfo, MemoryContext *aggcontext)
Definition: nodeAgg.c:3660
fmAggrefPtr AggGetAggref(FunctionCallInfo fcinfo)
Definition: nodeAgg.c:3697
Definition: fmgr.h:53
Oid get_fn_expr_rettype(FmgrInfo *flinfo)
Definition: fmgr.c:2198
PGFunction load_external_function(char *filename, char *funcname, bool signalNotFound, void **filehandle)
Definition: dfmgr.c:94
bool(* needs_fmgr_hook_type)(Oid fn_oid)
Definition: fmgr.h:691
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:1827
short fn_nargs
Definition: fmgr.h:57
struct StringInfoData * fmStringInfo
Definition: fmgr.h:29
PGFunction lookup_external_function(void *filehandle, char *funcname)
Definition: dfmgr.c:158
bool get_call_expr_arg_stable(fmNodePtr expr, int argnum)
MemoryContext fn_mcxt
Definition: fmgr.h:62
int indexmaxkeys
Definition: fmgr.h:400
char * OutputFunctionCall(FmgrInfo *flinfo, Datum val)
Definition: fmgr.c:1926
Oid get_call_expr_argtype(fmNodePtr expr, int argnum)
PGFunction fn_addr
Definition: fmgr.h:55
Datum FunctionCall2Coll(FmgrInfo *flinfo, Oid collation, Datum arg1, Datum arg2)
Definition: fmgr.c:1306
fmNodePtr context
Definition: fmgr.h:72
Datum(* PGFunction)(FunctionCallInfo fcinfo)
Definition: fmgr.h:40
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:1205
Datum ReceiveFunctionCall(FmgrInfo *flinfo, fmStringInfo buf, Oid typioparam, int32 typmod)
Definition: fmgr.c:1940
int namedatalen
Definition: fmgr.h:401
Datum FunctionCall4Coll(FmgrInfo *flinfo, Oid collation, Datum arg1, Datum arg2, Datum arg3, Datum arg4)
Definition: fmgr.c:1353
Datum DirectFunctionCall4Coll(PGFunction func, Oid collation, Datum arg1, Datum arg2, Datum arg3, Datum arg4)
Definition: fmgr.c:1083
Definition: nodes.h:508
char * OidOutputFunctionCall(Oid functionId, Datum val)
Definition: fmgr.c:2006
char * fmgr(Oid procedureId,...)
Definition: fmgr.c:2046
Datum FunctionCall6Coll(FmgrInfo *flinfo, Oid collation, Datum arg1, Datum arg2, Datum arg3, Datum arg4, Datum arg5, Datum arg6)
Definition: fmgr.c:1409
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:1441
Datum OidFunctionCall3Coll(Oid functionId, Oid collation, Datum arg1, Datum arg2, Datum arg3)
Definition: fmgr.c:1626
Datum DirectFunctionCall7Coll(PGFunction func, Oid collation, Datum arg1, Datum arg2, Datum arg3, Datum arg4, Datum arg5, Datum arg6, Datum arg7)
Definition: fmgr.c:1171
struct varlena * pg_detoast_datum_packed(struct varlena *datum)
Definition: fmgr.c:2174
#define PGDLLIMPORT
Definition: c.h:1063
char bool
Definition: c.h:199
signed int int32
Definition: c.h:253
#define FUNC_MAX_ARGS
Size EstimateLibraryStateSpace(void)
Definition: dfmgr.c:706
bool get_fn_expr_variadic(FmgrInfo *flinfo)
Definition: fmgr.c:2362
FmgrInfo * flinfo
Definition: fmgr.h:71
struct Aggref * fmAggrefPtr
Definition: fmgr.h:23
Oid get_fn_expr_argtype(FmgrInfo *flinfo, int argnum)
Definition: fmgr.c:2220
Datum FunctionCall5Coll(FmgrInfo *flinfo, Oid collation, Datum arg1, Datum arg2, Datum arg3, Datum arg4, Datum arg5)
Definition: fmgr.c:1380
bytea * SendFunctionCall(FmgrInfo *flinfo, Datum val)
Definition: fmgr.c:1987
bool fn_retset
Definition: fmgr.h:59
void fmgr_info_copy(FmgrInfo *dstinfo, FmgrInfo *srcinfo, MemoryContext destcxt)
Definition: fmgr.c:583
bool fn_strict
Definition: fmgr.h:58
void fmgr_info_cxt(Oid functionId, FmgrInfo *finfo, MemoryContext mcxt)
Definition: fmgr.c:169
MemoryContext AggGetTempMemoryContext(FunctionCallInfo fcinfo)
Definition: nodeAgg.c:3722
struct FunctionCallInfoData * FunctionCallInfo
Definition: fmgr.h:38
Datum DirectFunctionCall2Coll(PGFunction func, Oid collation, Datum arg1, Datum arg2)
Definition: fmgr.c:1036
Datum OidFunctionCall1Coll(Oid functionId, Oid collation, Datum arg1)
Definition: fmgr.c:1578
bool CheckFunctionValidatorAccess(Oid validatorOid, Oid functionOid)
Definition: fmgr.c:2412
static char * buf
Definition: pg_test_fsync.c:65
FmgrHookEventType
Definition: fmgr.h:684
Datum OidFunctionCall6Coll(Oid functionId, Oid collation, Datum arg1, Datum arg2, Datum arg3, Datum arg4, Datum arg5, Datum arg6)
Definition: fmgr.c:1716
int funcmaxargs
Definition: fmgr.h:399
fmNodePtr resultinfo
Definition: fmgr.h:73
bool argnull[FUNC_MAX_ARGS]
Definition: fmgr.h:78
Definition: fmgr.h:687
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:1328
Datum DirectFunctionCall5Coll(PGFunction func, Oid collation, Datum arg1, Datum arg2, Datum arg3, Datum arg4, Datum arg5)
Definition: fmgr.c:1110
Datum OidFunctionCall2Coll(Oid functionId, Oid collation, Datum arg1, Datum arg2)
Definition: fmgr.c:1601
int float8byval
Definition: fmgr.h:403
void(* fmExprContextCallbackFunction)(Datum arg)
Definition: fmgr.h:26
const Pg_finfo_record * fetch_finfo_record(void *filehandle, char *funcname)
Definition: fmgr.c:444
void(* fmgr_hook_type)(FmgrHookEventType event, FmgrInfo *flinfo, Datum *arg)
Definition: fmgr.h:693
Datum InputFunctionCall(FmgrInfo *flinfo, char *str, Oid typioparam, int32 typmod)
Definition: fmgr.c:1882
uintptr_t Datum
Definition: postgres.h:374
void fmgr_info(Oid functionId, FmgrInfo *finfo)
Definition: fmgr.c:159
Datum OidReceiveFunctionCall(Oid functionId, fmStringInfo buf, Oid typioparam, int32 typmod)
Definition: fmgr.c:2015
Oid fn_oid
Definition: fmgr.h:56
void clear_external_function_hash(void *filehandle)
Definition: fmgr.c:567
void load_file(const char *filename, bool restricted)
Definition: dfmgr.c:133
Datum arg[FUNC_MAX_ARGS]
Definition: fmgr.h:77
void AggRegisterCallback(FunctionCallInfo fcinfo, fmExprContextCallbackFunction func, Datum arg)
Definition: nodeAgg.c:3749
void ** find_rendezvous_variable(const char *varName)
Definition: dfmgr.c:667
Datum DirectFunctionCall6Coll(PGFunction func, Oid collation, Datum arg1, Datum arg2, Datum arg3, Datum arg4, Datum arg5, Datum arg6)
Definition: fmgr.c:1139
struct varlena * pg_detoast_datum_copy(struct varlena *datum)
Definition: fmgr.c:2151
fmNodePtr fn_expr
Definition: fmgr.h:63
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:1241
Datum OidFunctionCall4Coll(Oid functionId, Oid collation, Datum arg1, Datum arg2, Datum arg3, Datum arg4)
Definition: fmgr.c:1654
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:1475
size_t Size
Definition: c.h:353
struct FmgrInfo FmgrInfo
struct Node * fmNodePtr
Definition: fmgr.h:22
Datum FunctionCall1Coll(FmgrInfo *flinfo, Oid collation, Datum arg1)
Definition: fmgr.c:1286
void * fn_extra
Definition: fmgr.h:61
int float4byval
Definition: fmgr.h:402
Datum OidInputFunctionCall(Oid functionId, char *str, Oid typioparam, int32 typmod)
Definition: fmgr.c:1997
static char * filename
Definition: pg_dumpall.c:84
void RestoreLibraryState(char *start_address)
Definition: dfmgr.c:745
void SerializeLibraryState(Size maxsize, char *start_address)
Definition: dfmgr.c:723
unsigned char fn_stats
Definition: fmgr.h:60
bytea * OidSendFunctionCall(Oid functionId, Datum val)
Definition: fmgr.c:2025
bool get_fn_expr_arg_stable(FmgrInfo *flinfo, int argnum)
Definition: fmgr.c:2291
void * arg
Definition: c.h:435
Datum OidFunctionCall0Coll(Oid functionId, Oid collation)
Definition: fmgr.c:1558
Datum OidFunctionCall5Coll(Oid functionId, Oid collation, Datum arg1, Datum arg2, Datum arg3, Datum arg4, Datum arg5)
Definition: fmgr.c:1684
Datum DirectFunctionCall3Coll(PGFunction func, Oid collation, Datum arg1, Datum arg2, Datum arg3)
Definition: fmgr.c:1058
Datum DirectFunctionCall1Coll(PGFunction func, Oid collation, Datum arg1)
Definition: fmgr.c:1016
Oid fmgr_internal_function(const char *proname)
Definition: fmgr.c:609
struct varlena * pg_detoast_datum(struct varlena *datum)
Definition: fmgr.c:2142
struct varlena * pg_detoast_datum_slice(struct varlena *datum, int32 first, int32 count)
Definition: fmgr.c:2167
Datum OidFunctionCall7Coll(Oid functionId, Oid collation, Datum arg1, Datum arg2, Datum arg3, Datum arg4, Datum arg5, Datum arg6, Datum arg7)
Definition: fmgr.c:1751
int api_version
Definition: fmgr.h:338
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:1788
int version
Definition: fmgr.h:398
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:1511