xref: /petsc/include/petsc/private/ftnimpl.h (revision feaf08ea36ffe4fb16da05e2fed575fa424e5b40)
1 #pragma once
2 
3 #include <petsc/private/petscimpl.h>
4 PETSC_INTERN PetscErrorCode PETScParseFortranArgs_Private(int *, char ***);
5 PETSC_EXTERN PetscErrorCode PetscMPIFortranDatatypeToC(MPI_Fint, MPI_Datatype *);
6 
7 PETSC_EXTERN PetscErrorCode PetscScalarAddressToFortran(PetscObject, PetscInt, PetscScalar *, PetscScalar *, PetscInt, size_t *);
8 PETSC_EXTERN PetscErrorCode PetscScalarAddressFromFortran(PetscObject, PetscScalar *, size_t, PetscInt, PetscScalar **);
9 PETSC_EXTERN size_t         PetscIntAddressToFortran(const PetscInt *, const PetscInt *);
10 PETSC_EXTERN PetscInt      *PetscIntAddressFromFortran(const PetscInt *, size_t);
11 PETSC_EXTERN char          *PETSC_NULL_CHARACTER_Fortran;
12 PETSC_EXTERN void          *PETSC_NULL_INTEGER_Fortran;
13 PETSC_EXTERN void          *PETSC_NULL_SCALAR_Fortran;
14 PETSC_EXTERN void          *PETSC_NULL_DOUBLE_Fortran;
15 PETSC_EXTERN void          *PETSC_NULL_REAL_Fortran;
16 PETSC_EXTERN void          *PETSC_NULL_BOOL_Fortran;
17 PETSC_EXTERN void          *PETSC_NULL_ENUM_Fortran;
18 PETSC_EXTERN void          *PETSC_NULL_INTEGER_ARRAY_Fortran;
19 PETSC_EXTERN void          *PETSC_NULL_SCALAR_ARRAY_Fortran;
20 PETSC_EXTERN void          *PETSC_NULL_REAL_ARRAY_Fortran;
21 PETSC_EXTERN void          *PETSC_NULL_MPI_COMM_Fortran;
22 PETSC_EXTERN void          *PETSC_NULL_INTEGER_POINTER_Fortran;
23 PETSC_EXTERN void          *PETSC_NULL_SCALAR_POINTER_Fortran;
24 PETSC_EXTERN void          *PETSC_NULL_REAL_POINTER_Fortran;
25 PETSC_EXTERN void (*PETSC_NULL_FUNCTION_Fortran)(void);
26 
27 PETSC_INTERN PetscErrorCode PetscInitFortran_Private(const char *, PetscInt);
28 
29 /*  ----------------------------------------------------------------------*/
30 /*
31    PETSc object C pointers are stored directly as
32    Fortran integer*4 or *8 depending on the size of pointers.
33 */
34 
35 /* --------------------------------------------------------------------*/
36 /*
37     Since Fortran does not null terminate strings we need to insure the string is null terminated before passing it
38     to C. This may require a memory allocation which is then freed with FREECHAR().
39 */
40 #define FIXCHAR(a, n, b) \
41   do { \
42     if ((a) == PETSC_NULL_CHARACTER_Fortran) { \
43       (b) = PETSC_NULLPTR; \
44       (a) = PETSC_NULLPTR; \
45     } else { \
46       while (((n) > 0) && ((a)[(n) - 1] == ' ')) (n)--; \
47       *ierr = PetscMalloc1((n) + 1, &(b)); \
48       if (*ierr) return; \
49       *ierr  = PetscMemcpy((b), (a), (n)); \
50       (b)[n] = '\0'; \
51       if (*ierr) return; \
52     } \
53   } while (0)
54 #define FREECHAR(a, b) \
55   do { \
56     if (a != b) *ierr = PetscFree(b); \
57   } while (0)
58 
59 /*
60     Fortran expects any unneeded characters at the end of its strings to be filled with the blank character.
61 */
62 #define FIXRETURNCHAR(flg, a, n) \
63   do { \
64     if (flg) { \
65       PETSC_FORTRAN_CHARLEN_T __i; \
66       for (__i = 0; __i < n && a[__i] != 0; __i++) { }; \
67       for (; __i < n; __i++) a[__i] = ' '; \
68     } \
69   } while (0)
70 
71 /*
72     The cast through PETSC_UINTPTR_T is so that compilers that warn about casting to/from void * to void(*)(void)
73     will not complain about these comparisons. It is not know if this works for all compilers
74 */
75 #define FORTRANNULLINTEGERPOINTER(a) (((void *)(PETSC_UINTPTR_T)a) == PETSC_NULL_INTEGER_POINTER_Fortran)
76 #define FORTRANNULLSCALARPOINTER(a)  (((void *)(PETSC_UINTPTR_T)a) == PETSC_NULL_SCALAR_POINTER_Fortran)
77 #define FORTRANNULLREALPOINTER(a)    (((void *)(PETSC_UINTPTR_T)a) == PETSC_NULL_REAL_POINTER_Fortran)
78 #define FORTRANNULLINTEGER(a)        (((void *)(PETSC_UINTPTR_T)a) == PETSC_NULL_INTEGER_Fortran || ((void *)(PETSC_UINTPTR_T)a) == PETSC_NULL_INTEGER_ARRAY_Fortran)
79 #define FORTRANNULLSCALAR(a)         (((void *)(PETSC_UINTPTR_T)a) == PETSC_NULL_SCALAR_Fortran || ((void *)(PETSC_UINTPTR_T)a) == PETSC_NULL_SCALAR_ARRAY_Fortran)
80 #define FORTRANNULLREAL(a)           (((void *)(PETSC_UINTPTR_T)a) == PETSC_NULL_REAL_Fortran || ((void *)(PETSC_UINTPTR_T)a) == PETSC_NULL_REAL_ARRAY_Fortran)
81 #define FORTRANNULLDOUBLE(a)         (((void *)(PETSC_UINTPTR_T)a) == PETSC_NULL_DOUBLE_Fortran)
82 #define FORTRANNULLBOOL(a)           (((void *)(PETSC_UINTPTR_T)a) == PETSC_NULL_BOOL_Fortran)
83 #define FORTRANNULLENUM(a)           ((((void *)(PETSC_UINTPTR_T)a) == PETSC_NULL_ENUM_Fortran) || (((void *)(PETSC_UINTPTR_T)a) == (void *)-50))
84 #define FORTRANNULLCHARACTER(a)      (((void *)(PETSC_UINTPTR_T)a) == PETSC_NULL_CHARACTER_Fortran)
85 #define FORTRANNULLFUNCTION(a)       (((void (*)(void))(PETSC_UINTPTR_T)a) == PETSC_NULL_FUNCTION_Fortran)
86 #define FORTRANNULLOBJECT(a)         (*(void **)(PETSC_UINTPTR_T)a == (void *)0)
87 #define FORTRANNULLMPICOMM(a)        (((void *)(PETSC_UINTPTR_T)a) == PETSC_NULL_MPI_COMM_Fortran)
88 
89 /*
90     A Fortran object with a value of (void*) 0 corresponds to a NULL object in C and is indicated in Fortran by PETSC_NULL_XXXX
91     A Fortran object with a value of (void*) -2 is an object that was never created or was destroyed (see checkFortranTypeInitialize()).
92     A Fortran object with a value of (void*) -3 happens when a PETSc routine returns in one of its arguments a NULL object
93     (it cannot return a value of (void*) 0 because if later the returned variable is passed to a creation routine,
94     it would think one has passed in a PETSC_NULL_XXX and error).
95 
96     This is needed because Fortran always uses pass by reference so one cannot pass a NULL address, only an address with special
97     values at the location.
98 */
99 
100 #define CHKFORTRANNULL(a) \
101   do { \
102     if (FORTRANNULLINTEGER(a) || FORTRANNULLENUM(a) || FORTRANNULLDOUBLE(a) || FORTRANNULLSCALAR(a) || FORTRANNULLREAL(a) || FORTRANNULLBOOL(a) || FORTRANNULLFUNCTION(a) || FORTRANNULLCHARACTER(a) || FORTRANNULLMPICOMM(a)) { a = PETSC_NULLPTR; } \
103   } while (0)
104 
105 #define CHKFORTRANNULLENUM(a) \
106   do { \
107     if (FORTRANNULLENUM(a)) { a = PETSC_NULLPTR; } \
108   } while (0)
109 
110 #define CHKFORTRANNULLINTEGER(a) \
111   do { \
112     if (FORTRANNULLINTEGER(a) || FORTRANNULLENUM(a)) { \
113       a = PETSC_NULLPTR; \
114     } else if (FORTRANNULLDOUBLE(a) || FORTRANNULLSCALAR(a) || FORTRANNULLREAL(a) || FORTRANNULLBOOL(a) || FORTRANNULLFUNCTION(a) || FORTRANNULLCHARACTER(a) || FORTRANNULLMPICOMM(a)) { \
115       *ierr = PetscError(PETSC_COMM_SELF, __LINE__, PETSC_FUNCTION_NAME, __FILE__, PETSC_ERR_ARG_WRONG, PETSC_ERROR_INITIAL, "Use PETSC_NULL_INTEGER"); \
116       *ierr = PETSC_ERR_ARG_BADPTR; \
117       return; \
118     } \
119   } while (0)
120 
121 #define CHKFORTRANNULLSCALAR(a) \
122   do { \
123     if (FORTRANNULLSCALAR(a)) { \
124       a = PETSC_NULLPTR; \
125     } else if (FORTRANNULLINTEGER(a) || FORTRANNULLDOUBLE(a) || FORTRANNULLREAL(a) || FORTRANNULLBOOL(a) || FORTRANNULLFUNCTION(a) || FORTRANNULLCHARACTER(a) || FORTRANNULLMPICOMM(a)) { \
126       *ierr = PetscError(PETSC_COMM_SELF, __LINE__, PETSC_FUNCTION_NAME, __FILE__, PETSC_ERR_ARG_WRONG, PETSC_ERROR_INITIAL, "Use PETSC_NULL_SCALAR"); \
127       *ierr = PETSC_ERR_ARG_BADPTR; \
128       return; \
129     } \
130   } while (0)
131 
132 #define CHKFORTRANNULLDOUBLE(a) \
133   do { \
134     if (FORTRANNULLDOUBLE(a)) { \
135       a = PETSC_NULLPTR; \
136     } else if (FORTRANNULLINTEGER(a) || FORTRANNULLSCALAR(a) || FORTRANNULLREAL(a) || FORTRANNULLBOOL(a) || FORTRANNULLFUNCTION(a) || FORTRANNULLCHARACTER(a) || FORTRANNULLMPICOMM(a)) { \
137       *ierr = PetscError(PETSC_COMM_SELF, __LINE__, PETSC_FUNCTION_NAME, __FILE__, PETSC_ERR_ARG_WRONG, PETSC_ERROR_INITIAL, "Use PETSC_NULL_DOUBLE"); \
138       *ierr = PETSC_ERR_ARG_BADPTR; \
139       return; \
140     } \
141   } while (0)
142 
143 #define CHKFORTRANNULLREAL(a) \
144   do { \
145     if (FORTRANNULLREAL(a)) { \
146       a = PETSC_NULLPTR; \
147     } else if (FORTRANNULLINTEGER(a) || FORTRANNULLDOUBLE(a) || FORTRANNULLSCALAR(a) || FORTRANNULLBOOL(a) || FORTRANNULLFUNCTION(a) || FORTRANNULLCHARACTER(a) || FORTRANNULLMPICOMM(a)) { \
148       *ierr = PetscError(PETSC_COMM_SELF, __LINE__, PETSC_FUNCTION_NAME, __FILE__, PETSC_ERR_ARG_WRONG, PETSC_ERROR_INITIAL, "Use PETSC_NULL_REAL"); \
149       *ierr = PETSC_ERR_ARG_BADPTR; \
150       return; \
151     } \
152   } while (0)
153 
154 #define CHKFORTRANNULLOBJECT(a) \
155   do { \
156     if (!(*(void **)a)) { \
157       a = PETSC_NULLPTR; \
158     } else if (FORTRANNULLINTEGER(a) || FORTRANNULLDOUBLE(a) || FORTRANNULLSCALAR(a) || FORTRANNULLREAL(a) || FORTRANNULLBOOL(a) || FORTRANNULLFUNCTION(a) || FORTRANNULLCHARACTER(a) || FORTRANNULLMPICOMM(a)) { \
159       *ierr = PetscError(PETSC_COMM_SELF, __LINE__, PETSC_FUNCTION_NAME, __FILE__, PETSC_ERR_ARG_WRONG, PETSC_ERROR_INITIAL, "Use PETSC_NULL_XXX where XXX is the name of a particular object class"); \
160       *ierr = PETSC_ERR_ARG_BADPTR; \
161       return; \
162     } \
163   } while (0)
164 
165 #define CHKFORTRANNULLBOOL(a) \
166   do { \
167     if (FORTRANNULLBOOL(a)) { \
168       a = PETSC_NULLPTR; \
169     } else if (FORTRANNULLSCALAR(a) || FORTRANNULLINTEGER(a) || FORTRANNULLDOUBLE(a) || FORTRANNULLSCALAR(a) || FORTRANNULLREAL(a) || FORTRANNULLFUNCTION(a) || FORTRANNULLCHARACTER(a) || FORTRANNULLMPICOMM(a)) { \
170       *ierr = PetscError(PETSC_COMM_SELF, __LINE__, PETSC_FUNCTION_NAME, __FILE__, PETSC_ERR_ARG_WRONG, PETSC_ERROR_INITIAL, "Use PETSC_NULL_BOOL"); \
171       *ierr = PETSC_ERR_ARG_BADPTR; \
172       return; \
173     } \
174   } while (0)
175 
176 #define CHKFORTRANNULLFUNCTION(a) \
177   do { \
178     if (FORTRANNULLFUNCTION(a)) { \
179       a = PETSC_NULLPTR; \
180     } else if (FORTRANNULLOBJECT(a) || FORTRANNULLSCALAR(a) || FORTRANNULLDOUBLE(a) || FORTRANNULLREAL(a) || FORTRANNULLINTEGER(a) || FORTRANNULLBOOL(a) || FORTRANNULLCHARACTER(a) || FORTRANNULLMPICOMM(a)) { \
181       *ierr = PetscError(PETSC_COMM_SELF, __LINE__, PETSC_FUNCTION_NAME, __FILE__, PETSC_ERR_ARG_WRONG, PETSC_ERROR_INITIAL, "Use PETSC_NULL_FUNCTION"); \
182       *ierr = PETSC_ERR_ARG_BADPTR; \
183       return; \
184     } \
185   } while (0)
186 
187 #define CHKFORTRANNULLMPICOMM(a) \
188   do { \
189     if (FORTRANNULLMPICOMM(a)) { \
190       a = PETSC_NULLPTR; \
191     } else if (FORTRANNULLINTEGER(a) || FORTRANNULLDOUBLE(a) || FORTRANNULLSCALAR(a) || FORTRANNULLREAL(a) || FORTRANNULLBOOL(a) || FORTRANNULLFUNCTION(a) || FORTRANNULLCHARACTER(a)) { \
192       *ierr = PetscError(PETSC_COMM_SELF, __LINE__, PETSC_FUNCTION_NAME, __FILE__, PETSC_ERR_ARG_WRONG, PETSC_ERROR_INITIAL, "Use PETSC_NULL_MPI_COMM"); \
193       *ierr = PETSC_ERR_ARG_BADPTR; \
194       return; \
195     } \
196   } while (0)
197 
198 /* In the beginning of Fortran XxxCreate() ensure object is not NULL or already created */
199 #define PETSC_FORTRAN_OBJECT_CREATE(a) \
200   do { \
201     if (!(*(void **)a)) { \
202       *ierr = PetscError(PETSC_COMM_SELF, __LINE__, PETSC_FUNCTION_NAME, __FILE__, PETSC_ERR_ARG_WRONG, PETSC_ERROR_INITIAL, "Cannot create PETSC_NULL_XXX object"); \
203       *ierr = PETSC_ERR_ARG_WRONG; \
204       return; \
205     } else if (*((void **)(a)) != (void *)-2 && *((void **)(a)) != (void *)-3) { \
206       *ierr = PetscError(PETSC_COMM_SELF, __LINE__, PETSC_FUNCTION_NAME, __FILE__, PETSC_ERR_ARG_WRONG, PETSC_ERROR_INITIAL, "Cannot create already existing object"); \
207       *ierr = PETSC_ERR_ARG_WRONG; \
208       return; \
209     } \
210   } while (0)
211 
212 /*
213   In the beginning of Fortran XxxDestroy(a), if the input object was destroyed, change it to a petsc C NULL object so that it won't crash C XxxDestory()
214   If it is PETSC_NULL_XXX just return since these objects cannot be destroyed
215 */
216 #define PETSC_FORTRAN_OBJECT_F_DESTROYED_TO_C_NULL(a) \
217   do { \
218     if (!*(void **)a || *((void **)(a)) == (void *)-2 || *((void **)(a)) == (void *)-3) { \
219       *ierr = PETSC_SUCCESS; \
220       return; \
221     } \
222   } while (0)
223 
224 /* After C XxxDestroy(a) is called, change a's state from NULL to destroyed, so that it can be used/destroyed again by Fortran.
225    E.g., in VecScatterCreateToAll(x,vscat,seq,ierr), if seq = PETSC_NULL_VEC, petsc won't create seq. But if seq is a
226    destroyed object (e.g., as a result of a previous Fortran VecDestroy), petsc will create seq.
227 */
228 #define PETSC_FORTRAN_OBJECT_C_NULL_TO_F_DESTROYED(a) \
229   do { \
230     *((void **)(a)) = (void *)-2; \
231   } while (0)
232 
233 /*
234     Variable type where we stash PETSc object pointers in Fortran.
235 */
236 typedef PETSC_UINTPTR_T PetscFortranAddr;
237 
238 /*
239     These are used to support the default viewers that are
240   created at run time, in C using the , trick.
241 
242     The numbers here must match the numbers in include/petsc/finclude/petscsys.h
243 */
244 #define PETSC_VIEWER_DRAW_WORLD_FORTRAN   4
245 #define PETSC_VIEWER_DRAW_SELF_FORTRAN    5
246 #define PETSC_VIEWER_SOCKET_WORLD_FORTRAN 6
247 #define PETSC_VIEWER_SOCKET_SELF_FORTRAN  7
248 #define PETSC_VIEWER_STDOUT_WORLD_FORTRAN 8
249 #define PETSC_VIEWER_STDOUT_SELF_FORTRAN  9
250 #define PETSC_VIEWER_STDERR_WORLD_FORTRAN 10
251 #define PETSC_VIEWER_STDERR_SELF_FORTRAN  11
252 #define PETSC_VIEWER_BINARY_WORLD_FORTRAN 12
253 #define PETSC_VIEWER_BINARY_SELF_FORTRAN  13
254 #define PETSC_VIEWER_MATLAB_WORLD_FORTRAN 14
255 #define PETSC_VIEWER_MATLAB_SELF_FORTRAN  15
256 
257 #include <petscviewer.h>
258 
259 static inline PetscViewer PetscPatchDefaultViewers(PetscViewer *v)
260 {
261   if (!v) return PETSC_NULLPTR;
262   if (!(*(void **)v)) return PETSC_NULLPTR;
263   switch (*(PetscFortranAddr *)v) {
264   case PETSC_VIEWER_DRAW_WORLD_FORTRAN:
265     return PETSC_VIEWER_DRAW_WORLD;
266   case PETSC_VIEWER_DRAW_SELF_FORTRAN:
267     return PETSC_VIEWER_DRAW_SELF;
268 
269   case PETSC_VIEWER_STDOUT_WORLD_FORTRAN:
270     return PETSC_VIEWER_STDOUT_WORLD;
271   case PETSC_VIEWER_STDOUT_SELF_FORTRAN:
272     return PETSC_VIEWER_STDOUT_SELF;
273 
274   case PETSC_VIEWER_STDERR_WORLD_FORTRAN:
275     return PETSC_VIEWER_STDERR_WORLD;
276   case PETSC_VIEWER_STDERR_SELF_FORTRAN:
277     return PETSC_VIEWER_STDERR_SELF;
278 
279   case PETSC_VIEWER_BINARY_WORLD_FORTRAN:
280     return PETSC_VIEWER_BINARY_WORLD;
281   case PETSC_VIEWER_BINARY_SELF_FORTRAN:
282     return PETSC_VIEWER_BINARY_SELF;
283 
284 #if defined(PETSC_HAVE_MATLAB)
285   case PETSC_VIEWER_MATLAB_SELF_FORTRAN:
286     return PETSC_VIEWER_MATLAB_SELF;
287   case PETSC_VIEWER_MATLAB_WORLD_FORTRAN:
288     return PETSC_VIEWER_MATLAB_WORLD;
289 #endif
290 
291 #if defined(PETSC_USE_SOCKET_VIEWER)
292   case PETSC_VIEWER_SOCKET_WORLD_FORTRAN:
293     return PETSC_VIEWER_SOCKET_WORLD;
294   case PETSC_VIEWER_SOCKET_SELF_FORTRAN:
295     return PETSC_VIEWER_SOCKET_SELF;
296 #endif
297 
298   default:
299     return *v;
300   }
301 }
302 
303 #if defined(PETSC_USE_SOCKET_VIEWER)
304   #define PetscPatchDefaultViewers_Fortran_Socket(vin, v) \
305     } \
306     else if ((*(PetscFortranAddr *)vin) == PETSC_VIEWER_SOCKET_WORLD_FORTRAN) \
307     { \
308       v = PETSC_VIEWER_SOCKET_WORLD; \
309     } \
310     else if ((*(PetscFortranAddr *)vin) == PETSC_VIEWER_SOCKET_SELF_FORTRAN) \
311     { \
312       v = PETSC_VIEWER_SOCKET_SELF
313 #else
314   #define PetscPatchDefaultViewers_Fortran_Socket(vin, v)
315 #endif
316 
317 #define PetscPatchDefaultViewers_Fortran(vin, v) \
318   do { \
319     if ((*(PetscFortranAddr *)vin) == PETSC_VIEWER_DRAW_WORLD_FORTRAN) { \
320       v = PETSC_VIEWER_DRAW_WORLD; \
321     } else if ((*(PetscFortranAddr *)vin) == PETSC_VIEWER_DRAW_SELF_FORTRAN) { \
322       v = PETSC_VIEWER_DRAW_SELF; \
323     } else if ((*(PetscFortranAddr *)vin) == PETSC_VIEWER_STDOUT_WORLD_FORTRAN) { \
324       v = PETSC_VIEWER_STDOUT_WORLD; \
325     } else if ((*(PetscFortranAddr *)vin) == PETSC_VIEWER_STDOUT_SELF_FORTRAN) { \
326       v = PETSC_VIEWER_STDOUT_SELF; \
327     } else if ((*(PetscFortranAddr *)vin) == PETSC_VIEWER_STDERR_WORLD_FORTRAN) { \
328       v = PETSC_VIEWER_STDERR_WORLD; \
329     } else if ((*(PetscFortranAddr *)vin) == PETSC_VIEWER_STDERR_SELF_FORTRAN) { \
330       v = PETSC_VIEWER_STDERR_SELF; \
331     } else if ((*(PetscFortranAddr *)vin) == PETSC_VIEWER_BINARY_WORLD_FORTRAN) { \
332       v = PETSC_VIEWER_BINARY_WORLD; \
333     } else if ((*(PetscFortranAddr *)vin) == PETSC_VIEWER_BINARY_SELF_FORTRAN) { \
334       v = PETSC_VIEWER_BINARY_SELF; \
335     } else if ((*(PetscFortranAddr *)vin) == PETSC_VIEWER_MATLAB_WORLD_FORTRAN) { \
336       v = PETSC_VIEWER_BINARY_WORLD; \
337     } else if ((*(PetscFortranAddr *)vin) == PETSC_VIEWER_MATLAB_SELF_FORTRAN) { \
338       v = PETSC_VIEWER_BINARY_SELF; \
339       PetscPatchDefaultViewers_Fortran_Socket(vin, v); \
340     } else { \
341       v = *vin; \
342     } \
343   } while (0)
344 
345 /*
346       Allocates enough space to store Fortran function pointers in PETSc object
347    that are needed by the Fortran interface.
348 */
349 #define PetscObjectAllocateFortranPointers(obj, N) \
350   do { \
351     if (!((PetscObject)(obj))->fortran_func_pointers) { \
352       *ierr = PetscCalloc((N) * sizeof(void (*)(void)), &((PetscObject)(obj))->fortran_func_pointers); \
353       if (*ierr) return; \
354       ((PetscObject)obj)->num_fortran_func_pointers = (N); \
355     } \
356   } while (0)
357 
358 #define PetscCallFortranVoidFunction(...) \
359   do { \
360     PetscErrorCode ierr = PETSC_SUCCESS; \
361     /* the function may or may not access ierr */ \
362     __VA_ARGS__; \
363     PetscCall(ierr); \
364   } while (0)
365 
366 /* Entire function body, _ctx is a "special" variable that can be passed along */
367 #define PetscObjectUseFortranCallback_Private(obj, cid, types, args, cbclass) \
368   do { \
369     void(*func) types, *_ctx; \
370     PetscFunctionBegin; \
371     PetscCall(PetscObjectGetFortranCallback((PetscObject)(obj), (cbclass), (cid), (PetscVoidFn **)&func, &_ctx)); \
372     if (func) PetscCallFortranVoidFunction((*func)args); \
373     PetscFunctionReturn(PETSC_SUCCESS); \
374   } while (0)
375 #define PetscObjectUseFortranCallback(obj, cid, types, args)        PetscObjectUseFortranCallback_Private(obj, cid, types, args, PETSC_FORTRAN_CALLBACK_CLASS)
376 #define PetscObjectUseFortranCallbackSubType(obj, cid, types, args) PetscObjectUseFortranCallback_Private(obj, cid, types, args, PETSC_FORTRAN_CALLBACK_SUBTYPE)
377 
378 /* Disable deprecation warnings while building Fortran wrappers */
379 #undef PETSC_DEPRECATED_OBJECT
380 #define PETSC_DEPRECATED_OBJECT(...)
381 #undef PETSC_DEPRECATED_FUNCTION
382 #define PETSC_DEPRECATED_FUNCTION(...)
383 #undef PETSC_DEPRECATED_ENUM
384 #define PETSC_DEPRECATED_ENUM(...)
385 #undef PETSC_DEPRECATED_TYPEDEF
386 #define PETSC_DEPRECATED_TYPEDEF(...)
387 #undef PETSC_DEPRECATED_MACRO
388 #define PETSC_DEPRECATED_MACRO(...)
389 
390 /* PGI compilers pass in f90 pointers as 2 arguments */
391 #if defined(PETSC_HAVE_F90_2PTR_ARG)
392   #define PETSC_F90_2PTR_PROTO_NOVAR , void *
393   #define PETSC_F90_2PTR_PROTO(ptr)  , void *ptr
394   #define PETSC_F90_2PTR_PARAM(ptr)  , ptr
395 #else
396   #define PETSC_F90_2PTR_PROTO_NOVAR
397   #define PETSC_F90_2PTR_PROTO(ptr)
398   #define PETSC_F90_2PTR_PARAM(ptr)
399 #endif
400 
401 typedef struct {
402   char dummy;
403 } F90Array1d;
404 typedef struct {
405   char dummy;
406 } F90Array2d;
407 typedef struct {
408   char dummy;
409 } F90Array3d;
410 typedef struct {
411   char dummy;
412 } F90Array4d;
413 
414 PETSC_EXTERN PetscErrorCode F90Array1dCreate(void *, MPI_Datatype, PetscInt, PetscInt, F90Array1d *PETSC_F90_2PTR_PROTO_NOVAR);
415 PETSC_EXTERN PetscErrorCode F90Array1dAccess(F90Array1d *, MPI_Datatype, void **PETSC_F90_2PTR_PROTO_NOVAR);
416 PETSC_EXTERN PetscErrorCode F90Array1dDestroy(F90Array1d *, MPI_Datatype PETSC_F90_2PTR_PROTO_NOVAR);
417 
418 PETSC_EXTERN PetscErrorCode F90Array2dCreate(void *, MPI_Datatype, PetscInt, PetscInt, PetscInt, PetscInt, F90Array2d *PETSC_F90_2PTR_PROTO_NOVAR);
419 PETSC_EXTERN PetscErrorCode F90Array2dAccess(F90Array2d *, MPI_Datatype, void **PETSC_F90_2PTR_PROTO_NOVAR);
420 PETSC_EXTERN PetscErrorCode F90Array2dDestroy(F90Array2d *, MPI_Datatype PETSC_F90_2PTR_PROTO_NOVAR);
421 
422 PETSC_EXTERN PetscErrorCode F90Array3dCreate(void *, MPI_Datatype, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, F90Array3d *PETSC_F90_2PTR_PROTO_NOVAR);
423 PETSC_EXTERN PetscErrorCode F90Array3dAccess(F90Array3d *, MPI_Datatype, void **PETSC_F90_2PTR_PROTO_NOVAR);
424 PETSC_EXTERN PetscErrorCode F90Array3dDestroy(F90Array3d *, MPI_Datatype PETSC_F90_2PTR_PROTO_NOVAR);
425 
426 PETSC_EXTERN PetscErrorCode F90Array4dCreate(void *, MPI_Datatype, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, F90Array4d *PETSC_F90_2PTR_PROTO_NOVAR);
427 PETSC_EXTERN PetscErrorCode F90Array4dAccess(F90Array4d *, MPI_Datatype, void **PETSC_F90_2PTR_PROTO_NOVAR);
428 PETSC_EXTERN PetscErrorCode F90Array4dDestroy(F90Array4d *, MPI_Datatype PETSC_F90_2PTR_PROTO_NOVAR);
429 
430 /*
431   F90Array1dCreate - Given a C pointer to a one dimensional
432   array and its length; this fills in the appropriate Fortran 90
433   pointer data structure.
434 
435   Input Parameters:
436 +   array - regular C pointer (address)
437 .   type  - DataType of the array
438 .   start - starting index of the array
439 -   len   - length of array (in items)
440 
441   Output Parameter:
442 .   ptr - Fortran 90 pointer
443 */
444