xref: /petsc/include/petscerror.h (revision d52a580b706c59ca78066c1e38754e45b6b56e2b)
1 /*
2     Contains all error handling interfaces for PETSc.
3 */
4 #pragma once
5 // IWYU pragma: private, include "petscsys.h"
6 
7 #include <petscmacros.h>
8 #include <petscsystypes.h>
9 
10 #if defined(__cplusplus)
11   #include <exception> // std::exception
12 #endif
13 
14 /* SUBMANSEC = Sys */
15 
16 #define SETERRQ1(...) PETSC_DEPRECATED_MACRO(3, 17, 0, "SETERRQ", ) SETERRQ(__VA_ARGS__)
17 #define SETERRQ2(...) PETSC_DEPRECATED_MACRO(3, 17, 0, "SETERRQ", ) SETERRQ(__VA_ARGS__)
18 #define SETERRQ3(...) PETSC_DEPRECATED_MACRO(3, 17, 0, "SETERRQ", ) SETERRQ(__VA_ARGS__)
19 #define SETERRQ4(...) PETSC_DEPRECATED_MACRO(3, 17, 0, "SETERRQ", ) SETERRQ(__VA_ARGS__)
20 #define SETERRQ5(...) PETSC_DEPRECATED_MACRO(3, 17, 0, "SETERRQ", ) SETERRQ(__VA_ARGS__)
21 #define SETERRQ6(...) PETSC_DEPRECATED_MACRO(3, 17, 0, "SETERRQ", ) SETERRQ(__VA_ARGS__)
22 #define SETERRQ7(...) PETSC_DEPRECATED_MACRO(3, 17, 0, "SETERRQ", ) SETERRQ(__VA_ARGS__)
23 #define SETERRQ8(...) PETSC_DEPRECATED_MACRO(3, 17, 0, "SETERRQ", ) SETERRQ(__VA_ARGS__)
24 #define SETERRQ9(...) PETSC_DEPRECATED_MACRO(3, 17, 0, "SETERRQ", ) SETERRQ(__VA_ARGS__)
25 
26 /*MC
27    SETERRQ - Macro to be called when an error has been detected,
28 
29    Synopsis:
30    #include <petscsys.h>
31    PetscErrorCode SETERRQ(MPI_Comm comm, PetscErrorCode ierr, char *message, ...)
32 
33    Collective
34 
35    Input Parameters:
36 +  comm    - An MPI communicator, use `PETSC_COMM_SELF` unless you know all ranks of another communicator will detect the error
37 .  ierr    - nonzero error code, see the list of standard error codes in include/petscerror.h
38 -  message - error message
39 
40   Level: beginner
41 
42    Notes:
43    This is rarely needed, one should use `PetscCheck()` and `PetscCall()` and friends to automatically handle error conditions.
44    Once the error handler is called the calling function is then returned from with the given error code.
45 
46    Experienced users can set the error handler with `PetscPushErrorHandler()`.
47 
48    Fortran Note:
49    `SETERRQ()` may be called from Fortran subroutines but `SETERRA()` must be called from the
50    Fortran main program.
51 
52 .seealso: `PetscCheck()`, `PetscAssert()`, `PetscTraceBackErrorHandler()`, `PetscPushErrorHandler()`,
53           `PetscError()`, `PetscCall()`, `CHKMEMQ`, `CHKERRA()`, `PetscCallMPI()`, `PetscErrorCode`
54 M*/
55 #define SETERRQ(comm, ierr, ...) \
56   do { \
57     PetscErrorCode ierr_seterrq_petsc_ = PetscError(comm, __LINE__, PETSC_FUNCTION_NAME, __FILE__, ierr, PETSC_ERROR_INITIAL, __VA_ARGS__); \
58     return ierr_seterrq_petsc_ ? ierr_seterrq_petsc_ : PETSC_ERR_RETURN; \
59   } while (0)
60 
61 #define SETERRQNULL(comm, ierr, ...) \
62   do { \
63     (void)PetscError(comm, __LINE__, PETSC_FUNCTION_NAME, __FILE__, ierr, PETSC_ERROR_INITIAL, __VA_ARGS__); \
64     return NULL; \
65   } while (0)
66 
67 /*
68     Returned from PETSc functions that are called from MPI, such as related to attributes
69       Do not confuse PETSC_MPI_ERROR_CODE and PETSC_ERR_MPI, the first is registered with MPI and returned to MPI as
70       an error code, the latter is a regular PETSc error code passed within PETSc code indicating an error was detected in an MPI call.
71 */
72 PETSC_EXTERN PetscMPIInt PETSC_MPI_ERROR_CLASS;
73 PETSC_EXTERN PetscMPIInt PETSC_MPI_ERROR_CODE;
74 
75 /*MC
76    SETERRMPI - Macro to be called when an error has been detected within an MPI callback function
77 
78    No Fortran Support
79 
80    Synopsis:
81    #include <petscsys.h>
82    PetscErrorCode SETERRMPI(MPI_Comm comm, PetscErrorCode ierr, char *message, ...)
83 
84    Collective
85 
86    Input Parameters:
87 +  comm    - An MPI communicator, use `PETSC_COMM_SELF` unless you know all ranks of another communicator will detect the error
88 .  ierr    - nonzero error code, see the list of standard error codes in include/petscerror.h
89 -  message - error message
90 
91   Level: developer
92 
93    Note:
94    This macro is FOR USE IN MPI CALLBACK FUNCTIONS ONLY, such as those passed to `MPI_Comm_create_keyval()`. It always returns the error code `PETSC_MPI_ERROR_CODE`
95   which is registered with `MPI_Add_error_code()` when PETSc is initialized.
96 
97 .seealso: `SETERRQ()`, `PetscCall()`, `PetscCallMPI()`, `PetscTraceBackErrorHandler()`, `PetscPushErrorHandler()`, `PetscError()`, `CHKMEMQ`, `PetscErrorCode`
98 M*/
99 #define SETERRMPI(comm, ierr, ...) return ((void)PetscError(comm, __LINE__, PETSC_FUNCTION_NAME, __FILE__, ierr, PETSC_ERROR_INITIAL, __VA_ARGS__), PETSC_MPI_ERROR_CODE)
100 
101 /*MC
102    SETERRA - Fortran-only macro that can be called when an error has been detected from the main program
103 
104    Synopsis:
105    #include <petscsys.h>
106    PetscErrorCode SETERRA(MPI_Comm comm, PetscErrorCode ierr, char *message)
107 
108    Collective
109 
110    Input Parameters:
111 +  comm    - An MPI communicator, so that the error can be collective
112 .  ierr    - nonzero error code, see the list of standard error codes in include/petscerror.h
113 -  message - error message in the `printf()` format
114 
115    Level: beginner
116 
117    Notes:
118    This should only be used with Fortran. With C/C++, use `SETERRQ()`.
119 
120    `SETERRQ()` may be called from Fortran subroutines but `SETERRA()` must be called from the
121     Fortran main program.
122 
123 .seealso: `SETERRQ()`, `SETERRABORT()`, `PetscCall()`, `CHKERRA()`, `PetscCallAbort()`, `PetscErrorCode`
124 M*/
125 
126 /*MC
127    SETERRABORT - Macro that can be called when an error has been detected,
128 
129    Synopsis:
130    #include <petscsys.h>
131    PetscErrorCode SETERRABORT(MPI_Comm comm, PetscErrorCode ierr, char *message, ...)
132 
133    Collective
134 
135    Input Parameters:
136 +  comm    - An MPI communicator, so that the error can be collective
137 .  ierr    - nonzero error code, see the list of standard error codes in include/petscerror.h
138 -  message - error message in the `printf()` format
139 
140    Level: beginner
141 
142    Notes:
143    This function just calls `MPI_Abort()`.
144 
145    This should only be called in routines that cannot return an error code, such as in C++ constructors.
146 
147    Fortran Note:
148    Use `SETERRA()` in Fortran main program and `SETERRQ()` in Fortran subroutines
149 
150    Developer Note:
151    In Fortran `SETERRA()` could be called `SETERRABORT()` since they serve the same purpose
152 
153 .seealso: `SETERRQ()`, `PetscTraceBackErrorHandler()`, `PetscPushErrorHandler()`, `PetscError()`, `PetscCall()`, `CHKMEMQ`, `PetscErrorCode`
154 M*/
155 #define SETERRABORT(comm, ierr, ...) \
156   do { \
157     (void)PetscError(comm, __LINE__, PETSC_FUNCTION_NAME, __FILE__, ierr, PETSC_ERROR_INITIAL, __VA_ARGS__); \
158     (void)MPI_Abort(comm, ierr); \
159   } while (0)
160 
161 /*MC
162   PetscCheck - Checks that a particular condition is true; if not true, then returns the provided error code
163 
164   Synopsis:
165   #include <petscsys.h>
166   void PetscCheck(bool cond, MPI_Comm comm, PetscErrorCode ierr, const char *message, ...)
167 
168   Collective; No Fortran Support
169 
170   Input Parameters:
171 + cond    - The boolean condition
172 . comm    - The communicator on which the check can be collective on
173 . ierr    - A nonzero error code, see include/petscerror.h for the complete list
174 - message - Error message in the `printf()` format
175 
176   Level: beginner
177 
178   Notes:
179   Enabled in both optimized and debug builds.
180 
181   As a general rule, `PetscCheck()` is used to check "usage error" (for example, passing an incorrect value as a function argument),
182   `PetscAssert()` is used to "check for bugs in PETSc" (for example, is a value in a PETSc data structure nonsensical).
183   However, for functions that are called in a "hot spot", for example, thousands of times in a loop, `PetscAssert()` should be used instead
184   of `PetscCheck()` since the former is compiled out in PETSc's optimization code.
185 
186   Calls `SETERRQ()` if the assertion fails, so can only be called from functions returning a
187   `PetscErrorCode` (or equivalent type after conversion).
188 
189 .seealso: `PetscAssert()`, `PetscCheckReturnMPI()`, `SETERRQ()`, `PetscError()`, `PetscCall()`, `PetscCheckAbort()`, `PetscErrorCode`
190 M*/
191 #define PetscCheck(cond, comm, ierr, ...) \
192   do { \
193     if (PetscUnlikely(!(cond))) SETERRQ(comm, ierr, __VA_ARGS__); \
194   } while (0)
195 
196 /*MC
197   PetscCheckReturnMPI - Checks that a particular condition is true; if not true, then returns an MPI error code.
198   To check for errors in PETSc-provided MPI callbacks.
199 
200   Synopsis:
201   #include <petscsys.h>
202   void PetscCheckReturnMPI(bool cond, MPI_Comm comm, PetscErrorCode ierr, const char *message, ...)
203 
204   Collective; No Fortran Support
205 
206   Input Parameters:
207 + cond    - The boolean condition
208 . comm    - The communicator on which the check can be collective on
209 . ierr    - A nonzero error code, see include/petscerror.h for the complete list
210 - message - Error message in the `printf()` format
211 
212   Level: beginner
213 
214   Note:
215   Enabled in both optimized and debug builds.
216 
217 .seealso: `PetscCheck()`, `PetscAssert()`, `SETERRQ()`, `PetscError()`, `PetscCall()`, `PetscCheckAbort()`, `PetscErrorCode`
218 M*/
219 #define PetscCheckReturnMPI(cond, comm, ierr, ...) \
220   do { \
221     if (PetscUnlikely(!(cond))) SETERRMPI(comm, ierr, __VA_ARGS__); \
222   } while (0)
223 
224 /*MC
225   PetscCheckAbort - Check that a particular condition is true, otherwise prints error and aborts
226 
227   Synopsis:
228   #include <petscsys.h>
229   void PetscCheckAbort(bool cond, MPI_Comm comm, PetscErrorCode ierr, const char *message, ...)
230 
231   Collective; No Fortran Support
232 
233   Input Parameters:
234 + cond    - The boolean condition
235 . comm    - The communicator on which the check can be collective on
236 . ierr    - A nonzero error code, see include/petscerror.h for the complete list
237 - message - Error message in the `printf()` format
238 
239   Level: developer
240 
241   Notes:
242   Enabled in both optimized and debug builds.
243 
244   Calls `SETERRABORT()` if the assertion fails, can be called from a function that does not return an
245   error code, such as a C++ constructor. usually `PetscCheck()` should be used.
246 
247 .seealso: `PetscAssertAbort()`, `PetscAssert()`, `SETERRQ()`, `PetscError()`, `PetscCall()`, `PetscCheck()`, `SETERRABORT()`, `PetscErrorCode`
248 M*/
249 #define PetscCheckAbort(cond, comm, ierr, ...) \
250   do { \
251     if (PetscUnlikely(!(cond))) SETERRABORT(comm, ierr, __VA_ARGS__); \
252   } while (0)
253 
254 /*MC
255   PetscAssert - Assert that a particular condition is true
256 
257   Synopsis:
258   #include <petscsys.h>
259   void PetscAssert(bool cond, MPI_Comm comm, PetscErrorCode ierr, const char *message, ...)
260 
261   Collective; No Fortran Support
262 
263   Input Parameters:
264 + cond    - The boolean condition
265 . comm    - The communicator on which the check can be collective on
266 . ierr    - A nonzero error code, see include/petscerror.h for the complete list
267 - message - Error message in `printf()` format
268 
269   Level: beginner
270 
271   Notes:
272   Equivalent to `PetscCheck()` if debugging is enabled, and `PetscAssume(cond)` otherwise.
273 
274   See `PetscCheck()` for usage and behaviour.
275 
276   This is needed instead of simply using `assert()` because this correctly handles the collective nature of errors under MPI
277 
278 .seealso: `PetscCheck()`, `SETERRQ()`, `PetscError()`, `PetscAssertAbort()`, `PetscErrorCode`
279 M*/
280 #if PetscDefined(USE_DEBUG)
281   #define PetscAssert(cond, comm, ierr, ...) PetscCheck(cond, comm, ierr, __VA_ARGS__)
282 #else
283   #define PetscAssert(cond, ...) PetscAssume(cond)
284 #endif
285 
286 /*MC
287   PetscAssertAbort - Assert that a particular condition is true, otherwise prints error and aborts
288 
289   Synopsis:
290   #include <petscsys.h>
291   void PetscAssertAbort(bool cond, MPI_Comm comm, PetscErrorCode ierr, const char *message, ...)
292 
293   Collective; No Fortran Support
294 
295   Input Parameters:
296 + cond    - The boolean condition
297 . comm    - The communicator on which the check can be collective on
298 . ierr    - A nonzero error code, see include/petscerror.h for the complete list
299 - message - Error message in the `printf()` format
300 
301   Level: beginner
302 
303   Note:
304   Enabled only in debug builds. See `PetscCheckAbort()` for usage.
305 
306 .seealso: `PetscCheckAbort()`, `PetscAssert()`, `PetscCheck()`, `SETERRABORT()`, `PetscError()`
307 M*/
308 #if PetscDefined(USE_DEBUG)
309   #define PetscAssertAbort(cond, comm, ierr, ...) PetscCheckAbort(cond, comm, ierr, __VA_ARGS__)
310 #else
311   #define PetscAssertAbort(cond, comm, ierr, ...) PetscAssume(cond)
312 #endif
313 
314 /*MC
315   PetscCall - Calls a PETSc function and then checks the resulting error code, if it is
316   non-zero it calls the error handler and returns from the current function with the error
317   code.
318 
319   Synopsis:
320   #include <petscsys.h>
321   void PetscCall(PetscFunction(args))
322 
323   Not Collective
324 
325   Input Parameter:
326 . PetscFunction - any PETSc function that returns an error code
327 
328   Level: beginner
329 
330   Notes:
331   Once the error handler is called the calling function is then returned from with the given
332   error code. Experienced users can set the error handler with `PetscPushErrorHandler()`.
333 
334   `PetscCall()` cannot be used in functions returning a datatype not convertible to
335   `PetscErrorCode`. For example, `PetscCall()` may not be used in functions returning `void`, use
336   `PetscCallAbort()` or `PetscCallVoid()` in this case.
337 
338   Example Usage:
339 .vb
340   PetscCall(PetscInitiailize(...)); // OK to call even when PETSc is not yet initialized!
341 
342   struct my_struct
343   {
344     void *data;
345   } my_complex_type;
346 
347   struct my_struct bar(void)
348   {
349     PetscCall(foo(15)); // ERROR PetscErrorCode not convertible to struct my_struct!
350   }
351 
352   PetscCall(bar()) // ERROR input not convertible to PetscErrorCode
353 .ve
354 
355   It is also possible to call this directly on a `PetscErrorCode` variable
356 .vb
357   PetscCall(ierr);  // check if ierr is nonzero
358 .ve
359 
360   Should not be used to call callback functions provided by users, `PetscCallBack()` should be used in that situation.
361 
362   `PetscUseTypeMethod()` or `PetscTryTypeMethod()` should be used when calling functions pointers contained in a PETSc object's `ops` array
363 
364   Fortran Notes:
365   The Fortran function in which this is used must declare a `PetscErrorCode` variable necessarily named `ierr`, and `ierr` must be
366   the final argument to the PETSc function being called.
367 
368   In the main program and in Fortran subroutines that do not have `ierr` as the final return parameter, one
369   should use `PetscCallA()`
370 
371   Example Fortran Usage:
372 .vb
373   PetscErrorCode ierr
374   Vec v
375 
376   ...
377   PetscCall(VecShift(v, 1.0, ierr))
378   PetscCallA(VecShift(v, 1.0, ierr))
379 .ve
380 
381 .seealso: `SETERRQ()`, `PetscCheck()`, `PetscAssert()`, `PetscTraceBackErrorHandler()`, `PetscCallMPI()`,
382           `PetscPushErrorHandler()`, `PetscError()`, `CHKMEMQ`, `CHKERRA()`,
383           `CHKERRMPI()`, `PetscCallBack()`, `PetscCallAbort()`, `PetscCallVoid()`, `PetscCallNull()`
384 M*/
385 
386 /*MC
387   PetscCallNull - Calls a PETSc function and then checks the resulting error code, if it is
388   non-zero it calls the error handler and returns a `NULL`
389 
390   Synopsis:
391   #include <petscsys.h>
392   void PetscCallNull(PetscFunction(args))
393 
394   Not Collective; No Fortran Support
395 
396   Input Parameter:
397 . PetscFunction - any PETSc function that returns something that can be returned as a `NULL`
398 
399   Level: developer
400 
401 .seealso: `PetscCall()`, `SETERRQ()`, `PetscCheck()`, `PetscAssert()`, `PetscTraceBackErrorHandler()`, `PetscCallMPI()`,
402           `PetscPushErrorHandler()`, `PetscError()`, `CHKMEMQ`, `CHKERRA()`,
403           `CHKERRMPI()`, `PetscCallBack()`, `PetscCallAbort()`, `PetscCallVoid()`, `PetscCall()`
404 M*/
405 
406 /*MC
407    PetscCallA - Fortran-only macro that should be used in the main program and subroutines that do not have `ierr` as the final return parameter, to call PETSc functions instead of using
408    `PetscCall()` which should be used in other Fortran subroutines
409 
410    Synopsis:
411    #include <petscsys.h>
412    PetscErrorCode PetscCallA(PetscFunction(arguments, ierr))
413 
414    Collective
415 
416    Input Parameter:
417 .  PetscFunction(arguments,ierr) - the call to the function
418 
419   Level: beginner
420 
421    Notes:
422    This should only be used with Fortran. With C/C++, use `PetscCall()` always.
423 
424    The Fortran function in which this is used must declare a `PetscErrorCode` variable necessarily named `ierr`
425    Use `SETERRA()` to set an error in a Fortran main program and `SETERRQ()` in Fortran subroutines
426 
427 .seealso: `SETERRQ()`, `SETERRA()`, `SETERRABORT()`, `PetscCall()`, `CHKERRA()`, `PetscCallAbort()`
428 M*/
429 
430 /*MC
431   PetscCallBack - Calls a user provided PETSc callback function and then checks the resulting error code, if it is non-zero it calls the error
432   handler and returns from the current function with the error code.
433 
434   Synopsis:
435   #include <petscsys.h>
436   void PetscCallBack(const char *functionname, PetscFunction(args))
437 
438   Not Collective; No Fortran Support
439 
440   Input Parameters:
441 + functionname - the name of the function being called, this can be a string with spaces that describes the meaning of the callback
442 - PetscFunction - user provided callback function that returns an error code
443 
444   Example Usage:
445 .vb
446   PetscCallBack("XXX callback to do something", a->callback(...));
447 .ve
448 
449   Level: developer
450 
451   Notes:
452   `PetscUseTypeMethod()` and ` PetscTryTypeMethod()` are the preferred API for this functionality. But when the callback functions are associated with a
453   `DMSNES` or `DMTS` this API must be used.
454 
455   Once the error handler is called the calling function is then returned from with the given
456   error code. Experienced users can set the error handler with `PetscPushErrorHandler()`.
457 
458   `PetscCallBack()` should only be called in PETSc when a call is being made to a user provided call-back routine.
459 
460   Developer Note:
461   It would be good to provide a new API for when the callbacks are associated with `DMSNES` or `DMTS` so this routine could be used less
462 
463 .seealso: `SETERRQ()`, `PetscCheck()`, `PetscCall()`, `PetscAssert()`, `PetscTraceBackErrorHandler()`, `PetscCallMPI()`
464           `PetscPushErrorHandler()`, `PetscError()`, `CHKMEMQ`, `CHKERRA()`, `CHKERRMPI()`, `PetscCall()`,  `PetscUseTypeMethod()`, `PetscTryTypeMethod()`
465 M*/
466 
467 /*MC
468   PetscCallVoid - Like `PetscCall()` but for use in functions that return `void`
469 
470   Synopsis:
471   #include <petscsys.h>
472   void PetscCallVoid(PetscFunction(args))
473 
474   Not Collective; No Fortran Support
475 
476   Input Parameter:
477 . PetscFunction - any PETSc function that returns an error code
478 
479   Example Usage:
480 .vb
481   void foo()
482   {
483     KSP ksp;
484 
485     PetscFunctionBeginUser;
486     // OK, properly handles PETSc error codes
487     PetscCallVoid(KSPCreate(PETSC_COMM_WORLD, &ksp));
488     PetscFunctionReturnVoid();
489   }
490 
491   PetscErrorCode bar()
492   {
493     KSP ksp;
494 
495     PetscFunctionBeginUser;
496     // ERROR, Non-void function 'bar' should return a value
497     PetscCallVoid(KSPCreate(PETSC_COMM_WORLD, &ksp));
498     // OK, returning PetscErrorCode
499     PetscCall(KSPCreate(PETSC_COMM_WORLD, &ksp));
500     PetscFunctionReturn(PETSC_SUCCESS);
501   }
502 .ve
503 
504   Level: beginner
505 
506   Notes:
507   Has identical usage to `PetscCall()`, except that it returns `void` on error instead of a
508   `PetscErrorCode`. See `PetscCall()` for more detailed discussion.
509 
510   Note that users should prefer `PetscCallAbort()` to this routine. While this routine does
511   "handle" errors by returning from the enclosing function, it effectively gobbles the
512   error. Since the enclosing function itself returns `void`, its callers have no way of knowing
513   that the routine returned early due to an error. `PetscCallAbort()` at least ensures that the
514   program crashes gracefully.
515 
516 .seealso: `PetscCall()`, `PetscErrorCode`, `PetscCallAbort()`, `PetscCallNull()`
517 M*/
518 
519 /*MC
520   PetscCallReturnMPI - Calls a PETSc function and then checks the resulting error code, if it is
521   non-zero it calls the error handler and returns from the current function with an MPI error code.
522   To check for errors in PETSc provided MPI callbacks.
523 
524   Synopsis:
525   #include <petscsys.h>
526   void PetscCallReturnMPI(PetscFunction(args))
527 
528   Not Collective
529 
530   Input Parameter:
531 . PetscFunction - any PETSc function that returns an error code
532 
533   Level: advanced
534 
535   Notes:
536   Note to be confused with `PetscCallMPI()`.
537 
538   This is be used in a PETSc-provided MPI callback function, such as `MPI_Comm_delete_attr_function function()`.
539 
540   Currently, it always returns `MPI_ERR_OTHER` on failure
541 
542 .seealso: `PetscCall()`, `PetscCallMPI()`, `SETERRQ()`, `PetscCheck()`, `PetscAssert()`, `PetscTraceBackErrorHandler()`, `PetscCallMPI()`,
543           `PetscPushErrorHandler()`, `PetscError()`, `CHKMEMQ`, `CHKERRA()`,
544           `CHKERRMPI()`, `PetscCallBack()`, `PetscCallAbort()`, `PetscCallVoid()`, `PetscCallNull()`
545 M*/
546 
547 #if defined(PETSC_CLANG_STATIC_ANALYZER)
548 void PetscCall(PetscErrorCode);
549 void PetscCallBack(const char *, PetscErrorCode);
550 void PetscCallVoid(PetscErrorCode);
551 void PetscCallNull(PetscErrorCode);
552 void PetscCallReturnMPI(PetscErrorCode);
553 #else
554   #define PetscCall(...) \
555     do { \
556       PetscErrorCode ierr_petsc_call_q_; \
557       PetscStackUpdateLine; \
558       ierr_petsc_call_q_ = __VA_ARGS__; \
559       if (PetscUnlikely(ierr_petsc_call_q_ != PETSC_SUCCESS)) return PetscError(PETSC_COMM_SELF, __LINE__, PETSC_FUNCTION_NAME, __FILE__, ierr_petsc_call_q_, PETSC_ERROR_REPEAT, " "); \
560     } while (0)
561   #define PetscCallNull(...) \
562     do { \
563       PetscErrorCode ierr_petsc_call_q_; \
564       PetscStackUpdateLine; \
565       ierr_petsc_call_q_ = __VA_ARGS__; \
566       if (PetscUnlikely(ierr_petsc_call_q_ != PETSC_SUCCESS)) { \
567         (void)PetscError(PETSC_COMM_SELF, __LINE__, PETSC_FUNCTION_NAME, __FILE__, PETSC_ERR_PLIB, PETSC_ERROR_INITIAL, " "); \
568         PetscFunctionReturn(NULL); \
569       } \
570     } while (0)
571   #define PetscCallBack(function, ...) \
572     do { \
573       PetscErrorCode ierr_petsc_call_q_; \
574       PetscStackUpdateLine; \
575       PetscStackPushExternal(function); \
576       ierr_petsc_call_q_ = __VA_ARGS__; \
577       PetscStackPop; \
578       if (PetscUnlikely(ierr_petsc_call_q_ != PETSC_SUCCESS)) return PetscError(PETSC_COMM_SELF, __LINE__, PETSC_FUNCTION_NAME, __FILE__, ierr_petsc_call_q_, PETSC_ERROR_REPEAT, " "); \
579     } while (0)
580   #define PetscCallVoid(...) \
581     do { \
582       PetscErrorCode ierr_petsc_call_void_; \
583       PetscStackUpdateLine; \
584       ierr_petsc_call_void_ = __VA_ARGS__; \
585       if (PetscUnlikely(ierr_petsc_call_void_ != PETSC_SUCCESS)) { \
586         (void)PetscError(PETSC_COMM_SELF, __LINE__, PETSC_FUNCTION_NAME, __FILE__, ierr_petsc_call_void_, PETSC_ERROR_REPEAT, " "); \
587         return; \
588       } \
589     } while (0)
590   #define PetscCallReturnMPI(...) \
591     do { \
592       PetscErrorCode ierr_petsc_call_q_; \
593       PetscStackUpdateLine; \
594       ierr_petsc_call_q_ = __VA_ARGS__; \
595       if (PetscUnlikely(ierr_petsc_call_q_ != PETSC_SUCCESS)) { \
596         (void)PetscError(PETSC_COMM_SELF, __LINE__, PETSC_FUNCTION_NAME, __FILE__, ierr_petsc_call_q_, PETSC_ERROR_REPEAT, " "); \
597         return MPI_ERR_OTHER; \
598       } \
599     } while (0)
600 #endif
601 
602 /*MC
603   CHKERRQ - Checks error code returned from PETSc function
604 
605   Synopsis:
606   #include <petscsys.h>
607   void CHKERRQ(PetscErrorCode ierr)
608 
609   Not Collective
610 
611   Input Parameter:
612 . ierr - nonzero error code
613 
614   Level: deprecated
615 
616   Note:
617   Deprecated in favor of `PetscCall()`. This routine behaves identically to it.
618 
619 .seealso: `PetscCall()`
620 M*/
621 #define CHKERRQ(...) PetscCall(__VA_ARGS__)
622 #define CHKERRV(...) PetscCallVoid(__VA_ARGS__)
623 
624 PETSC_EXTERN void PetscMPIErrorString(PetscMPIInt, size_t, char *);
625 
626 /*MC
627   PetscCallMPI - Checks error code returned from MPI calls, if non-zero it calls the error
628   handler and then returns a `PetscErrorCode`
629 
630   Synopsis:
631   #include <petscsys.h>
632   void PetscCallMPI(MPI_Function(args))
633 
634   Not Collective
635 
636   Input Parameter:
637 . MPI_Function - an MPI function that returns an MPI error code
638 
639   Level: beginner
640 
641   Notes:
642   Always returns the error code `PETSC_ERR_MPI`; the MPI error code and string are embedded in
643   the string error message. Do not use this to call any other routines (for example PETSc
644   routines), it should only be used for direct MPI calls. The user may configure PETSc with the
645   `--with-strict-petscerrorcode` option to check this at compile-time, otherwise they must
646   check this themselves.
647 
648   This routine can only be used in functions returning `PetscErrorCode` themselves. If the
649   calling function returns a different type, use `PetscCallMPIAbort()` instead.
650 
651   Example Usage:
652 .vb
653   PetscCallMPI(MPI_Comm_size(...)); // OK, calling MPI function
654 
655   PetscCallMPI(PetscFunction(...)); // ERROR, use PetscCall() instead!
656 .ve
657 
658   Fortran Notes:
659   The Fortran function from which this is used must declare a variable `PetscErrorCode` ierr and ierr must be
660   the final argument to the MPI function being called.
661 
662   In the main program and in Fortran subroutines that do not have ierr as the final return parameter one
663   should use `PetscCallMPIA()`
664 
665   Fortran Usage:
666 .vb
667   PetscErrorCode ierr or integer ierr
668   ...
669   PetscCallMPI(MPI_Comm_size(...,ierr))
670   PetscCallMPIA(MPI_Comm_size(...,ierr)) ! Will abort after calling error handler
671 
672   PetscCallMPI(MPI_Comm_size(...,eflag)) ! ERROR, final argument must be ierr
673 .ve
674 
675 .seealso: `SETERRMPI()`, `PetscCall()`, `PetscCallReturnMPI()`, `SETERRQ()`, `SETERRABORT()`, `PetscCallAbort()`,
676           `PetscCallMPIAbort()`, `PetscTraceBackErrorHandler()`, `PetscPushErrorHandler()`,
677           `PetscError()`, `CHKMEMQ`, `PetscCallMPINull()`
678 M*/
679 
680 /*MC
681   PetscCallMPIReturnMPI - Checks error code returned from MPI calls, if non-zero it calls the error
682   handler and then returns an MPI error code. To check for errors in PETSc-provided MPI callbacks.
683 
684   Synopsis:
685   #include <petscsys.h>
686   void PetscCallMPIReturnMPI(MPI_Function(args))
687 
688   Not Collective
689 
690   Input Parameter:
691 . MPI_Function - an MPI function that returns an MPI error code
692 
693   Level: advanced
694 
695 .seealso: `SETERRMPI()`, `PetscCall()`, `PetscCallMPI()`, `PetscCallReturnMPI()`, `SETERRQ()`, `SETERRABORT()`, `PetscCallAbort()`,
696           `PetscCallMPIAbort()`, `PetscTraceBackErrorHandler()`, `PetscPushErrorHandler()`,
697           `PetscError()`, `CHKMEMQ`, `PetscCallMPINull()`
698 M*/
699 
700 /*MC
701   PetscCallMPINull - Checks error code returned from MPI calls, if non-zero it calls the error
702   handler and then returns a `NULL`
703 
704   Synopsis:
705   #include <petscsys.h>
706   void PetscCallMPINull(MPI_Function(args))
707 
708   Not Collective; No Fortran Support
709 
710   Input Parameter:
711 . MPI_Function - an MPI function that returns an MPI error code
712 
713   Level: beginner
714 
715   Notes:
716   Always passes the error code `PETSC_ERR_MPI` to the error handler `PetscError()`; the MPI error code and string are embedded in
717   the string error message. Do not use this to call any other routines (for example PETSc
718   routines), it should only be used for direct MPI calls.
719 
720   This routine can only be used in functions returning anything that can be returned as a `NULL` themselves. If the
721   calling function returns a different type, use `PetscCallMPIAbort()` instead.
722 
723   Example Usage:
724 .vb
725   PetscCallMPINull(MPI_Comm_size(...)); // OK, calling MPI function
726 
727   PetscCallMPI(PetscFunction(...)); // ERROR, use PetscCall() instead!
728 .ve
729 
730 .seealso: `SETERRMPI()`, `PetscCall()`, `SETERRQ()`, `SETERRABORT()`, `PetscCallAbort()`,
731           `PetscCallMPIAbort()`, `PetscTraceBackErrorHandler()`, `PetscPushErrorHandler()`,
732           `PetscError()`, `CHKMEMQ`, `PetscCallMPI()`
733 M*/
734 
735 /*MC
736   PetscCallMPIAbort - Like `PetscCallMPI()` but calls `MPI_Abort()` on error
737 
738   Synopsis:
739   #include <petscsys.h>
740   void PetscCallMPIAbort(MPI_Comm comm, MPI_Function(args))
741 
742   Not Collective
743 
744   Input Parameters:
745 + comm         - the MPI communicator to abort on
746 - MPI_Function - an MPI function that returns an MPI error code
747 
748   Level: beginner
749 
750   Notes:
751   Usage is identical to `PetscCallMPI()`. See `PetscCallMPI()` for detailed discussion.
752 
753   This routine may be used in functions returning `void` or other non-`PetscErrorCode` types.
754 
755   Fortran Note:
756   In Fortran this is called `PetscCallMPIA()` and is intended to be used in the main program while `PetscCallMPI()` is
757   used in Fortran subroutines.
758 
759   Developer Note:
760   This should have the same name in Fortran.
761 
762 .seealso: `PetscCallMPI()`, `PetscCallAbort()`, `SETERRABORT()`
763 M*/
764 #if defined(PETSC_CLANG_STATIC_ANALYZER)
765 void PetscCallMPI(PetscMPIInt);
766 void PetscCallMPIAbort(MPI_Comm, PetscMPIInt);
767 void PetscCallMPINull(PetscMPIInt);
768 #else
769   #define PetscCallMPI_Private(__PETSC_STACK_POP_FUNC__, __SETERR_FUNC__, __COMM__, ...) \
770     do { \
771       PetscMPIInt ierr_petsc_call_mpi_; \
772       PetscStackUpdateLine; \
773       PetscStackPushExternal("MPI function"); \
774       { \
775         ierr_petsc_call_mpi_ = __VA_ARGS__; \
776       } \
777       __PETSC_STACK_POP_FUNC__; \
778       if (PetscUnlikely(ierr_petsc_call_mpi_ != MPI_SUCCESS)) { \
779         char petsc_mpi_7_errorstring[2 * MPI_MAX_ERROR_STRING]; \
780         PetscMPIErrorString(ierr_petsc_call_mpi_, 2 * MPI_MAX_ERROR_STRING, (char *)petsc_mpi_7_errorstring); \
781         __SETERR_FUNC__(__COMM__, PETSC_ERR_MPI, "MPI error %d %s", ierr_petsc_call_mpi_, petsc_mpi_7_errorstring); \
782       } \
783     } while (0)
784 
785   #define PetscCallMPI(...)            PetscCallMPI_Private(PetscStackPop, SETERRQ, PETSC_COMM_SELF, __VA_ARGS__)
786   #define PetscCallMPIReturnMPI(...)   PetscCallMPI_Private(PetscStackPopNoCheck(PETSC_FUNCTION_NAME), SETERRMPI, PETSC_COMM_SELF, __VA_ARGS__)
787   #define PetscCallMPIAbort(comm, ...) PetscCallMPI_Private(PetscStackPopNoCheck(PETSC_FUNCTION_NAME), SETERRABORT, comm, __VA_ARGS__)
788   #define PetscCallMPINull(...)        PetscCallMPI_Private(PetscStackPopNoCheck(PETSC_FUNCTION_NAME), SETERRQNULL, PETSC_COMM_SELF, __VA_ARGS__)
789 #endif
790 
791 /*MC
792   CHKERRMPI - Checks the error code returned from MPI calls, if different from `MPI_SUCCESS` it calls the error handler and then returns
793 
794   Synopsis:
795   #include <petscsys.h>
796   void CHKERRMPI(PetscMPIInt ierr)
797 
798   Not Collective
799 
800   Input Parameter:
801 . ierr - nonzero error code, see the list of standard error codes in include/petscerror.h
802 
803   Level: deprecated
804 
805   Note:
806   Deprecated in favor of `PetscCallMPI()`. This routine behaves identically to it.
807 
808 .seealso: `PetscCallMPI()`
809 M*/
810 #define CHKERRMPI(...) PetscCallMPI(__VA_ARGS__)
811 
812 /*MC
813   PetscCallAbort - Checks error code returned from PETSc function, if non-zero it aborts immediately by calling `MPI_Abort()`
814 
815   Synopsis:
816   #include <petscsys.h>
817   void PetscCallAbort(MPI_Comm comm, PetscErrorCode ierr)
818 
819   Collective
820 
821   Input Parameters:
822 + comm - the MPI communicator on which to abort
823 - ierr - nonzero error code, see the list of standard error codes in include/petscerror.h
824 
825   Level: intermediate
826 
827   Notes:
828   This macro has identical type and usage semantics to `PetscCall()` with the important caveat
829   that this macro does not return. Instead, if ierr is nonzero it calls the PETSc error handler
830   and then immediately calls `MPI_Abort()`. It can therefore be used anywhere.
831 
832   As per `MPI_Abort()` semantics the communicator passed must be valid, although there is currently
833   no attempt made at handling any potential errors from `MPI_Abort()`. Note that while
834   `MPI_Abort()` is required to terminate only those processes which reside on comm, it is often
835   the case that `MPI_Abort()` terminates *all* processes.
836 
837   Example Usage:
838 .vb
839   PetscErrorCode boom(void) { return PETSC_ERR_MEM; }
840 
841   void foo(void)
842   {
843     PetscCallAbort(PETSC_COMM_WORLD,boom()); // OK, does not return a type
844   }
845 
846   double bar(void)
847   {
848     PetscCallAbort(PETSC_COMM_WORLD,boom()); // OK, does not return a type
849   }
850 
851   PetscCallAbort(MPI_COMM_NULL,boom()); // ERROR, communicator should be valid
852 
853   struct baz
854   {
855     baz()
856     {
857       PetscCallAbort(PETSC_COMM_SELF,boom()); // OK
858     }
859 
860     ~baz()
861     {
862       PetscCallAbort(PETSC_COMM_SELF,boom()); // OK (in fact the only way to handle PETSc errors)
863     }
864   };
865 .ve
866 
867   Fortran Note:
868   Use `PetscCallA()`.
869 
870   Developer Note:
871   This should have the same name in Fortran as in C.
872 
873 .seealso: `SETERRABORT()`, `PetscTraceBackErrorHandler()`, `PetscPushErrorHandler()`, `PetscError()`,
874           `SETERRQ()`, `CHKMEMQ`, `PetscCallMPI()`, `PetscCallCXXAbort()`
875 M*/
876 #if defined(PETSC_CLANG_STATIC_ANALYZER)
877 void PetscCallAbort(MPI_Comm, PetscErrorCode);
878 void PetscCallContinue(PetscErrorCode);
879 #else
880   #define PetscCallAbort(comm, ...) \
881     do { \
882       PetscErrorCode ierr_petsc_call_abort_; \
883       PetscStackUpdateLine; \
884       ierr_petsc_call_abort_ = __VA_ARGS__; \
885       if (PetscUnlikely(ierr_petsc_call_abort_ != PETSC_SUCCESS)) { \
886         ierr_petsc_call_abort_ = PetscError(PETSC_COMM_SELF, __LINE__, PETSC_FUNCTION_NAME, __FILE__, ierr_petsc_call_abort_, PETSC_ERROR_REPEAT, " "); \
887         (void)MPI_Abort(comm, (PetscMPIInt)ierr_petsc_call_abort_); \
888       } \
889     } while (0)
890   #define PetscCallContinue(...) \
891     do { \
892       PetscErrorCode ierr_petsc_call_continue_; \
893       PetscStackUpdateLine; \
894       ierr_petsc_call_continue_ = __VA_ARGS__; \
895       if (PetscUnlikely(ierr_petsc_call_continue_ != PETSC_SUCCESS)) { \
896         ierr_petsc_call_continue_ = PetscError(PETSC_COMM_SELF, __LINE__, PETSC_FUNCTION_NAME, __FILE__, ierr_petsc_call_continue_, PETSC_ERROR_REPEAT, " "); \
897         (void)ierr_petsc_call_continue_; \
898       } \
899     } while (0)
900 #endif
901 
902 /*MC
903   CHKERRABORT - Checks error code returned from PETSc function. If non-zero it aborts immediately.
904 
905   Synopsis:
906   #include <petscsys.h>
907   void CHKERRABORT(MPI_Comm comm, PetscErrorCode ierr)
908 
909   Not Collective
910 
911   Input Parameters:
912 + comm - the MPI communicator
913 - ierr - nonzero error code, see the list of standard error codes in include/petscerror.h
914 
915   Level: deprecated
916 
917   Note:
918   Deprecated in favor of `PetscCallAbort()`. This routine behaves identically to it.
919 
920 .seealso: `PetscCallAbort()`, `PetscErrorCode`
921 M*/
922 #define CHKERRABORT(comm, ...) PetscCallAbort(comm, __VA_ARGS__)
923 #define CHKERRCONTINUE(...)    PetscCallContinue(__VA_ARGS__)
924 
925 /*MC
926    CHKERRA - Fortran-only replacement for use of `CHKERRQ()` in the main program, which aborts immediately
927 
928    Synopsis:
929    #include <petscsys.h>
930    PetscErrorCode CHKERRA(PetscErrorCode ierr)
931 
932    Not Collective
933 
934    Input Parameter:
935 .  ierr - nonzero error code, see the list of standard error codes in include/petscerror.h
936 
937    Level: deprecated
938 
939    Note:
940    This macro is rarely needed, normal usage is `PetscCallA()` in the main Fortran program.
941 
942    Developer Note:
943    Why isn't this named `CHKERRABORT()` in Fortran?
944 
945 .seealso: `PetscCall()`, `PetscCallA()`, `PetscCallAbort()`, `CHKERRQ()`, `SETERRA()`, `SETERRQ()`, `SETERRABORT()`
946 M*/
947 
948 PETSC_EXTERN PetscBool petscwaitonerrorflg;
949 PETSC_EXTERN PetscBool petscindebugger;
950 PETSC_EXTERN PetscBool petscabortmpifinalize;
951 
952 #if defined(PETSC_CLANG_STATIC_ANALYZER)
953 void PETSCABORTWITHERR_Private(MPI_Comm, PetscErrorCode);
954 #else
955   #define PETSCABORTWITHIERR_Private(comm, ierr) \
956     do { \
957       PetscMPIInt size_; \
958       (void)MPI_Comm_size(comm, &size_); \
959       if (PetscCIEnabledPortableErrorOutput && (size_ == PetscGlobalSize || petscabortmpifinalize) && ierr != PETSC_ERR_SIG) { \
960         (void)MPI_Finalize(); \
961         exit(0); \
962       } else if (PetscCIEnabledPortableErrorOutput && PetscGlobalSize == 1) { \
963         exit(0); \
964       } else { \
965         (void)MPI_Abort(comm, (PetscMPIInt)ierr); \
966       } \
967     } while (0)
968 #endif
969 
970 /*MC
971    PETSCABORT - Call `MPI_Abort()` with an informative error code
972 
973    Synopsis:
974    #include <petscsys.h>
975    PETSCABORT(MPI_Comm comm, PetscErrorCode ierr)
976 
977    Collective; No Fortran Support
978 
979    Input Parameters:
980 +  comm - An MPI communicator, so that the error can be collective
981 -  ierr - nonzero error code, see the list of standard error codes in include/petscerror.h
982 
983    Level: advanced
984 
985    Notes:
986    If the option `-start_in_debugger` was used then this calls `abort()` to stop the program in the debugger.
987 
988    if `PetscCIEnabledPortableErrorOutput` is set, which means the code is running in the PETSc test harness (make test),
989    and `comm` is `MPI_COMM_WORLD` it strives to exit cleanly without calling `MPI_Abort()` and instead calling `MPI_Finalize()`.
990 
991    This is currently only used when an error propagates up to the C `main()` program and is detected by a `PetscCall()`, `PetscCallMPI()`,
992    or is set in `main()` with `SETERRQ()`. Abort calls such as `SETERRABORT()`,
993    `PetscCheckAbort()`, `PetscCallMPIAbort()`, and `PetscCallAbort()` always call `MPI_Abort()` and do not have any special
994    handling for the test harness.
995 
996    Developer Note:
997    Should the other abort calls also pass through this call instead of calling `MPI_Abort()` directly?
998 
999 .seealso: `PetscError()`, `PetscCall()`, `SETERRABORT()`, `PetscCheckAbort()`, `PetscCallMPIAbort()`, `PetscCall()`, `PetscCallMPI()`,
1000           `PetscCallAbort()`, `MPI_Abort()`, `PetscErrorCode`
1001 M*/
1002 #if defined(PETSC_CLANG_STATIC_ANALYZER)
1003 void PETSCABORT(MPI_Comm, PetscErrorCode);
1004 #else
1005   #define PETSCABORT(comm, ...) \
1006     do { \
1007       PetscErrorCode ierr_petsc_abort_; \
1008       if (petscwaitonerrorflg) ierr_petsc_abort_ = PetscSleep(1000); \
1009       if (petscindebugger) abort(); \
1010       else { \
1011         ierr_petsc_abort_ = __VA_ARGS__; \
1012         PETSCABORTWITHIERR_Private(comm, ierr_petsc_abort_); \
1013       } \
1014     } while (0)
1015 #endif
1016 
1017 #ifdef PETSC_CLANGUAGE_CXX
1018   /*MC
1019   PetscCallThrow - Checks error code, if non-zero it calls the C++ error handler which throws
1020   an exception
1021 
1022   Synopsis:
1023   #include <petscsys.h>
1024   void PetscCallThrow(PetscErrorCode ierr)
1025 
1026   Not Collective
1027 
1028   Input Parameter:
1029 . ierr - nonzero error code, see the list of standard error codes in include/petscerror.h
1030 
1031   Level: beginner
1032 
1033   Notes:
1034   Requires PETSc to be configured with clanguage of c++. Throws a std::runtime_error() on error.
1035 
1036   Once the error handler throws the exception you can use `PetscCallVoid()` which returns without
1037   an error code (bad idea since the error is ignored) or `PetscCallAbort()` to have `MPI_Abort()`
1038   called immediately.
1039 
1040 .seealso: `SETERRQ()`, `PetscCall()`, `SETERRABORT()`, `PetscCallAbort()`, `PetscTraceBackErrorHandler()`,
1041           `PetscPushErrorHandler()`, `PetscError()`, `CHKMEMQ`
1042 M*/
1043   #define PetscCallThrow(...) \
1044     do { \
1045       PetscStackUpdateLine; \
1046       PetscErrorCode ierr_petsc_call_throw_ = __VA_ARGS__; \
1047       if (PetscUnlikely(ierr_petsc_call_throw_ != PETSC_SUCCESS)) PetscError(PETSC_COMM_SELF, __LINE__, PETSC_FUNCTION_NAME, __FILE__, ierr_petsc_call_throw_, PETSC_ERROR_IN_CXX, PETSC_NULLPTR); \
1048     } while (0)
1049 
1050   /*MC
1051   CHKERRXX - Checks error code, if non-zero it calls the C++ error handler which throws an exception
1052 
1053   Synopsis:
1054   #include <petscsys.h>
1055   void CHKERRXX(PetscErrorCode ierr)
1056 
1057   Not Collective
1058 
1059   Input Parameter:
1060 . ierr - nonzero error code, see the list of standard error codes in include/petscerror.h
1061 
1062   Level: deprecated
1063 
1064   Note:
1065   Deprecated in favor of `PetscCallThrow()`. This routine behaves identically to it.
1066 
1067 .seealso: `PetscCallThrow()`
1068 M*/
1069   #define CHKERRXX(...) PetscCallThrow(__VA_ARGS__)
1070 #endif
1071 
1072 #define PetscCallCXX_Private(__SETERR_FUNC__, __COMM__, ...) \
1073   do { \
1074     PetscStackUpdateLine; \
1075     try { \
1076       __VA_ARGS__; \
1077     } catch (const std::exception &e) { \
1078       __SETERR_FUNC__(__COMM__, PETSC_ERR_LIB, "%s", e.what()); \
1079     } \
1080   } while (0)
1081 
1082 /*MC
1083   PetscCallCXX - Checks C++ function calls and if they throw an exception, catch it and then
1084   return a PETSc error code
1085 
1086   Synopsis:
1087   #include <petscsys.h>
1088   void PetscCallCXX(...) noexcept;
1089 
1090   Not Collective
1091 
1092   Input Parameter:
1093 . __VA_ARGS__ - An arbitrary expression
1094 
1095   Level: beginner
1096 
1097   Notes:
1098   `PetscCallCXX(...)` is a macro replacement for
1099 .vb
1100   try {
1101     __VA_ARGS__;
1102   } catch (const std::exception& e) {
1103     return ConvertToPetscErrorCode(e);
1104   }
1105 .ve
1106   Due to the fact that it catches any (reasonable) exception, it is essentially noexcept.
1107 
1108   If you cannot return a `PetscErrorCode` use `PetscCallCXXAbort()` instead.
1109 
1110   Example Usage:
1111 .vb
1112   void foo(void) { throw std::runtime_error("error"); }
1113 
1114   void bar()
1115   {
1116     PetscCallCXX(foo()); // ERROR bar() does not return PetscErrorCode
1117   }
1118 
1119   PetscErrorCode baz()
1120   {
1121     PetscCallCXX(foo()); // OK
1122 
1123     PetscCallCXX(
1124       bar();
1125       foo(); // OK multiple statements allowed
1126     );
1127   }
1128 
1129   struct bop
1130   {
1131     bop()
1132     {
1133       PetscCallCXX(foo()); // ERROR returns PetscErrorCode, cannot be used in constructors
1134     }
1135   };
1136 
1137   // ERROR contains do-while, cannot be used as function-try block
1138   PetscErrorCode qux() PetscCallCXX(
1139     bar();
1140     baz();
1141     foo();
1142     return 0;
1143   )
1144 .ve
1145 
1146 .seealso: `PetscCallCXXAbort()`, `PetscCallThrow()`, `SETERRQ()`, `PetscCall()`,
1147           `SETERRABORT()`, `PetscCallAbort()`, `PetscTraceBackErrorHandler()`, `PetscPushErrorHandler()`,
1148           `PetscError()`, `CHKMEMQ`
1149 M*/
1150 #define PetscCallCXX(...) PetscCallCXX_Private(SETERRQ, PETSC_COMM_SELF, __VA_ARGS__)
1151 
1152 /*MC
1153   PetscCallCXXAbort - Like `PetscCallCXX()` but calls `MPI_Abort()` instead of returning an
1154   error-code
1155 
1156   Synopsis:
1157   #include <petscsys.h>
1158   void PetscCallCXXAbort(MPI_Comm comm, ...) noexcept;
1159 
1160   Collective; No Fortran Support
1161 
1162   Input Parameters:
1163 + comm        - The MPI communicator to abort on
1164 - __VA_ARGS__ - An arbitrary expression
1165 
1166   Level: beginner
1167 
1168   Notes:
1169   This macro may be used to check C++ expressions for exceptions in cases where you cannot
1170   return an error code. This includes constructors, destructors, copy/move assignment functions
1171   or constructors among others.
1172 
1173   If an exception is caught, the macro calls `SETERRABORT()` on `comm`. The exception must
1174   derive from `std::exception` in order to be caught.
1175 
1176   If the routine _can_ return an error-code it is highly advised to use `PetscCallCXX()`
1177   instead.
1178 
1179   See `PetscCallCXX()` for additional discussion.
1180 
1181   Example Usage:
1182 .vb
1183   class Foo
1184   {
1185     std::vector<int> data_;
1186 
1187   public:
1188     // normally std::vector::reserve() may raise an exception, but since we handle it with
1189     // PetscCallCXXAbort() we may mark this routine as noexcept!
1190     Foo() noexcept
1191     {
1192       PetscCallCXXAbort(PETSC_COMM_SELF, data_.reserve(10));
1193     }
1194   };
1195 
1196   std::vector<int> bar()
1197   {
1198     std::vector<int> v;
1199 
1200     PetscFunctionBegin;
1201     // OK!
1202     PetscCallCXXAbort(PETSC_COMM_SELF, v.emplace_back(1));
1203     PetscFunctionReturn(v);
1204   }
1205 
1206   PetscErrorCode baz()
1207   {
1208     std::vector<int> v;
1209 
1210     PetscFunctionBegin;
1211     // WRONG! baz() returns a PetscErrorCode, prefer PetscCallCXX() instead
1212     PetscCallCXXAbort(PETSC_COMM_SELF, v.emplace_back(1));
1213     PetscFunctionReturn(PETSC_SUCCESS);
1214   }
1215 .ve
1216 
1217 .seealso: `PetscCallCXX()`, `SETERRABORT()`, `PetscCallAbort()`
1218 M*/
1219 #define PetscCallCXXAbort(comm, ...) PetscCallCXX_Private(SETERRABORT, comm, __VA_ARGS__)
1220 
1221 /*MC
1222   CHKERRCXX - Checks C++ function calls and if they throw an exception, catch it and then
1223   return a PETSc error code
1224 
1225   Synopsis:
1226   #include <petscsys.h>
1227   void CHKERRCXX(func) noexcept;
1228 
1229   Not Collective
1230 
1231   Input Parameter:
1232 . func - C++ function calls
1233 
1234   Level: deprecated
1235 
1236   Note:
1237   Deprecated in favor of `PetscCallCXX()`. This routine behaves identically to it.
1238 
1239 .seealso: `PetscCallCXX()`
1240 M*/
1241 #define CHKERRCXX(...) PetscCallCXX(__VA_ARGS__)
1242 
1243 /*MC
1244    CHKMEMQ - Checks the memory for corruption, calls error handler if any is detected
1245 
1246    Synopsis:
1247    #include <petscsys.h>
1248    CHKMEMQ;
1249 
1250    Not Collective
1251 
1252    Level: beginner
1253 
1254    Notes:
1255    We recommend using Valgrind <https://petsc.org/release/faq/#valgrind> or Compute Sanitizer
1256    <https://developer.nvidia.com/compute-sanitizer> on NVIDIA CUDA systems for finding memory problems. The ``CHKMEMQ``
1257    macro is useful on systems that do not have valgrind, but is not as good as Valgrind or cuda-memcheck.
1258 
1259    Must run with the option `-malloc_debug` (`-malloc_test` in debug mode; or if `PetscMallocSetDebug()` called) to enable this option
1260 
1261    Once the error handler is called the calling function is then returned from with the given error code.
1262 
1263    By defaults prints location where memory that is corrupted was allocated.
1264 
1265    Use `CHKMEMA` for functions that return `void`
1266 
1267 .seealso: `PetscTraceBackErrorHandler()`, `PetscPushErrorHandler()`, `PetscError()`, `SETERRQ()`, `PetscMallocValidate()`
1268 M*/
1269 #if defined(PETSC_CLANG_STATIC_ANALYZER)
1270   #define CHKMEMQ
1271   #define CHKMEMA
1272 #else
1273   #define CHKMEMQ \
1274     do { \
1275       PetscErrorCode ierr_petsc_memq_ = PetscMallocValidate(__LINE__, PETSC_FUNCTION_NAME, __FILE__); \
1276       if (PetscUnlikely(ierr_petsc_memq_ != PETSC_SUCCESS)) return PetscError(PETSC_COMM_SELF, __LINE__, PETSC_FUNCTION_NAME, __FILE__, ierr_petsc_memq_, PETSC_ERROR_REPEAT, " "); \
1277     } while (0)
1278   #define CHKMEMA PetscMallocValidate(__LINE__, PETSC_FUNCTION_NAME, __FILE__)
1279 #endif
1280 
1281 /*E
1282   PetscErrorType - passed to the PETSc error handling routines indicating if this is the first or a later call to the error handlers
1283 
1284   Level: advanced
1285 
1286   Note:
1287   `PETSC_ERROR_IN_CXX` indicates the error was detected in C++ and an exception should be generated
1288 
1289   Developer Note:
1290   This is currently used to decide when to print the detailed information about the run in `PetscTraceBackErrorHandler()`
1291 
1292 .seealso: `PetscError()`, `SETERRQ()`
1293 E*/
1294 typedef enum {
1295   PETSC_ERROR_INITIAL = 0,
1296   PETSC_ERROR_REPEAT  = 1,
1297   PETSC_ERROR_IN_CXX  = 2
1298 } PetscErrorType;
1299 
1300 #if defined(__clang_analyzer__)
1301 __attribute__((analyzer_noreturn))
1302 #endif
1303 PETSC_EXTERN PetscErrorCode PetscError(MPI_Comm, int, const char *, const char *, PetscErrorCode, PetscErrorType, const char *, ...) PETSC_ATTRIBUTE_COLD PETSC_ATTRIBUTE_FORMAT(7, 8);
1304 
1305 PETSC_EXTERN PetscErrorCode PetscErrorPrintfInitialize(void);
1306 PETSC_EXTERN PetscErrorCode PetscErrorMessage(PetscErrorCode, const char *[], char **);
1307 PETSC_EXTERN PetscErrorCode PetscTraceBackErrorHandler(MPI_Comm, int, const char *, const char *, PetscErrorCode, PetscErrorType, const char *, void *) PETSC_ATTRIBUTE_COLD;
1308 PETSC_EXTERN PetscErrorCode PetscIgnoreErrorHandler(MPI_Comm, int, const char *, const char *, PetscErrorCode, PetscErrorType, const char *, void *) PETSC_ATTRIBUTE_COLD;
1309 PETSC_EXTERN PetscErrorCode PetscEmacsClientErrorHandler(MPI_Comm, int, const char *, const char *, PetscErrorCode, PetscErrorType, const char *, void *) PETSC_ATTRIBUTE_COLD;
1310 PETSC_EXTERN PetscErrorCode PetscMPIAbortErrorHandler(MPI_Comm, int, const char *, const char *, PetscErrorCode, PetscErrorType, const char *, void *) PETSC_ATTRIBUTE_COLD;
1311 PETSC_EXTERN PetscErrorCode PetscAbortErrorHandler(MPI_Comm, int, const char *, const char *, PetscErrorCode, PetscErrorType, const char *, void *) PETSC_ATTRIBUTE_COLD;
1312 PETSC_EXTERN PetscErrorCode PetscAttachDebuggerErrorHandler(MPI_Comm, int, const char *, const char *, PetscErrorCode, PetscErrorType, const char *, void *) PETSC_ATTRIBUTE_COLD;
1313 PETSC_EXTERN PetscErrorCode PetscReturnErrorHandler(MPI_Comm, int, const char *, const char *, PetscErrorCode, PetscErrorType, const char *, void *) PETSC_ATTRIBUTE_COLD;
1314 PETSC_EXTERN PetscErrorCode PetscPushErrorHandler(PetscErrorCode (*handler)(MPI_Comm, int, const char *, const char *, PetscErrorCode, PetscErrorType, const char *, void *), void *);
1315 PETSC_EXTERN PetscErrorCode PetscPopErrorHandler(void);
1316 PETSC_EXTERN PetscErrorCode PetscSignalHandlerDefault(int, void *);
1317 PETSC_EXTERN PetscErrorCode PetscPushSignalHandler(PetscErrorCode (*)(int, void *), void *);
1318 PETSC_EXTERN PetscErrorCode PetscPopSignalHandler(void);
1319 PETSC_EXTERN PetscErrorCode PetscCheckPointerSetIntensity(PetscInt);
1320 PETSC_EXTERN void           PetscSignalSegvCheckPointerOrMpi(void);
1321 PETSC_DEPRECATED_FUNCTION(3, 13, 0, "PetscSignalSegvCheckPointerOrMpi()", ) static inline void PetscSignalSegvCheckPointer(void)
1322 {
1323   PetscSignalSegvCheckPointerOrMpi();
1324 }
1325 
1326 /*MC
1327     PetscErrorPrintf - Prints error messages.
1328 
1329    Synopsis:
1330     #include <petscsys.h>
1331      PetscErrorCode (*PetscErrorPrintf)(const char format[], ...);
1332 
1333     Not Collective; No Fortran Support
1334 
1335     Input Parameter:
1336 .   format - the usual `printf()` format string
1337 
1338    Options Database Keys:
1339 +  -error_output_stdout - cause error messages to be printed to stdout instead of the (default) stderr
1340 -  -error_output_none   - to turn off all printing of error messages (does not change the way the error is handled.)
1341 
1342    Level: developer
1343 
1344    Notes:
1345    Use
1346 .vb
1347      PetscErrorPrintf = PetscErrorPrintfNone; to turn off all printing of error messages (does not change the way the error is handled) and
1348      PetscErrorPrintf = PetscErrorPrintfDefault; to turn it back on or you can use your own function
1349 .ve
1350    Use
1351 .vb
1352      `PETSC_STDERR` = FILE* obtained from a file open etc. to have stderr printed to the file.
1353      `PETSC_STDOUT` = FILE* obtained from a file open etc. to have stdout printed to the file.
1354 .ve
1355    Use
1356 .vb
1357       `PetscPushErrorHandler()` to provide your own error handler that determines what kind of messages to print
1358 .ve
1359 
1360 .seealso: `PetscFPrintf()`, `PetscSynchronizedPrintf()`, `PetscHelpPrintf()`, `PetscPrintf()`, `PetscPushErrorHandler()`, `PetscVFPrintf()`, `PetscHelpPrintf()`
1361 M*/
1362 PETSC_EXTERN PetscErrorCode (*PetscErrorPrintf)(const char[], ...) PETSC_ATTRIBUTE_FORMAT(1, 2);
1363 
1364 /*E
1365      PetscFPTrap - types of floating point exceptions that may be trapped
1366 
1367      Currently only `PETSC_FP_TRAP_OFF` and `PETSC_FP_TRAP_ON` are handled. All others are treated as `PETSC_FP_TRAP_ON`.
1368 
1369      Level: intermediate
1370 
1371 .seealso: `PetscSetFPTrap()`, `PetscFPTrapPush()`
1372  E*/
1373 typedef enum {
1374   PETSC_FP_TRAP_OFF      = 0,
1375   PETSC_FP_TRAP_INDIV    = 1,
1376   PETSC_FP_TRAP_FLTOPERR = 2,
1377   PETSC_FP_TRAP_FLTOVF   = 4,
1378   PETSC_FP_TRAP_FLTUND   = 8,
1379   PETSC_FP_TRAP_FLTDIV   = 16,
1380   PETSC_FP_TRAP_FLTINEX  = 32,
1381   PETSC_FP_TRAP_ON       = 63
1382 } PetscFPTrap;
1383 
1384 PETSC_EXTERN PetscErrorCode PetscSetFPTrap(PetscFPTrap);
1385 PETSC_EXTERN PetscErrorCode PetscFPTrapPush(PetscFPTrap);
1386 PETSC_EXTERN PetscErrorCode PetscFPTrapPop(void);
1387 PETSC_EXTERN PetscErrorCode PetscDetermineInitialFPTrap(void);
1388 
1389 /*
1390       Allows the code to build a stack frame as it runs
1391 */
1392 
1393 #define PETSCSTACKSIZE 64
1394 typedef struct {
1395   const char *function[PETSCSTACKSIZE];
1396   const char *file[PETSCSTACKSIZE];
1397   int         line[PETSCSTACKSIZE];
1398   int         petscroutine[PETSCSTACKSIZE]; /* 0 external called from PETSc, 1 PETSc functions, 2 PETSc user functions */
1399   int         currentsize;
1400   int         hotdepth;
1401   PetscBool   check; /* option to check for correct Push/Pop semantics, true for default petscstack but not other stacks */
1402 } PetscStack;
1403 #if defined(PETSC_USE_DEBUG) && !defined(PETSC_HAVE_THREADSAFETY)
1404 PETSC_EXTERN PetscStack petscstack;
1405 #endif
1406 
1407 #if defined(PETSC_SERIALIZE_FUNCTIONS)
1408   #include <petsc/private/petscfptimpl.h>
1409   /*
1410    Registers the current function into the global function pointer to function name table
1411 
1412    Have to fix this to handle errors but cannot return error since used in PETSC_VIEWER_DRAW_() etc
1413 */
1414   #define PetscRegister__FUNCT__() \
1415     do { \
1416       static PetscBool __chked = PETSC_FALSE; \
1417       if (!__chked) { \
1418         void *ptr; \
1419         PetscCallAbort(PETSC_COMM_SELF, PetscDLSym(NULL, PETSC_FUNCTION_NAME, &ptr)); \
1420         __chked = PETSC_TRUE; \
1421       } \
1422     } while (0)
1423 #else
1424   #define PetscRegister__FUNCT__()
1425 #endif
1426 
1427 #if defined(PETSC_CLANG_STATIC_ANALYZER) || defined(__clang_analyzer__)
1428   #define PetscStackPushNoCheck(funct, petsc_routine, hot)
1429   #define PetscStackUpdateLine
1430   #define PetscStackPushExternal(funct)
1431   #define PetscStackPopNoCheck(funct)
1432   #define PetscStackClearTop
1433   #define PetscFunctionBegin
1434   #define PetscFunctionBeginUser
1435   #define PetscFunctionBeginHot
1436   #define PetscFunctionReturn(...)  return __VA_ARGS__
1437   #define PetscFunctionReturnVoid() return
1438   #define PetscStackPop
1439   #define PetscStackPush(f)
1440   #define PetscStackPush_Private(stack__, file__, func__, line__, petsc_routine__, hot__) \
1441     (void)file__; \
1442     (void)func__; \
1443     (void)line__
1444   #define PetscStackPop_Private(stack__, func__) (void)func__
1445 #elif defined(PETSC_USE_DEBUG) && !defined(PETSC_HAVE_THREADSAFETY)
1446 
1447   #define PetscStackPush_Private(stack__, file__, func__, line__, petsc_routine__, hot__) \
1448     do { \
1449       if (stack__.currentsize < PETSCSTACKSIZE) { \
1450         stack__.function[stack__.currentsize] = func__; \
1451         if (petsc_routine__) { \
1452           stack__.file[stack__.currentsize] = file__; \
1453           stack__.line[stack__.currentsize] = line__; \
1454         } else { \
1455           stack__.file[stack__.currentsize] = PETSC_NULLPTR; \
1456           stack__.line[stack__.currentsize] = 0; \
1457         } \
1458         stack__.petscroutine[stack__.currentsize] = petsc_routine__; \
1459       } \
1460       ++stack__.currentsize; \
1461       stack__.hotdepth += (hot__ || stack__.hotdepth); \
1462     } while (0)
1463 
1464   /* uses PetscCheckAbort() because may be used in a function that does not return an error code */
1465   #define PetscStackPop_Private(stack__, func__) \
1466     do { \
1467       PetscCheckAbort(!stack__.check || stack__.currentsize > 0, PETSC_COMM_SELF, PETSC_ERR_PLIB, "Invalid stack size %d, pop %s %s:%d.\n", stack__.currentsize, func__, __FILE__, __LINE__); \
1468       if (--stack__.currentsize < PETSCSTACKSIZE) { \
1469         PetscCheckAbort(!stack__.check || stack__.petscroutine[stack__.currentsize] != 1 || stack__.function[stack__.currentsize] == func__, PETSC_COMM_SELF, PETSC_ERR_PLIB, "Invalid stack: push from %s %s:%d. Pop from %s %s:%d.\n", \
1470                         stack__.function[stack__.currentsize], stack__.file[stack__.currentsize], stack__.line[stack__.currentsize], func__, __FILE__, __LINE__); \
1471         stack__.function[stack__.currentsize]     = PETSC_NULLPTR; \
1472         stack__.file[stack__.currentsize]         = PETSC_NULLPTR; \
1473         stack__.line[stack__.currentsize]         = 0; \
1474         stack__.petscroutine[stack__.currentsize] = 0; \
1475       } \
1476       stack__.hotdepth = PetscMax(stack__.hotdepth - 1, 0); \
1477     } while (0)
1478 
1479   /*MC
1480    PetscStackPushNoCheck - Pushes a new function name and line number onto the PETSc default stack that tracks where the running program is
1481    currently in the source code.
1482 
1483    Synopsis:
1484    #include <petscsys.h>
1485    void PetscStackPushNoCheck(char *funct,int petsc_routine,PetscBool hot);
1486 
1487    Not Collective
1488 
1489    Input Parameters:
1490 +  funct - the function name
1491 .  petsc_routine - 2 user function, 1 PETSc function, 0 some other function
1492 -  hot - indicates that the function may be called often so expensive error checking should be turned off inside the function
1493 
1494    Level: developer
1495 
1496    Notes:
1497    In debug mode PETSc maintains a stack of the current function calls that can be used to help to quickly see where a problem has
1498    occurred, for example, when a signal is received without running in the debugger. It is recommended to use the debugger if extensive information is needed to
1499    help debug the problem.
1500 
1501    This version does not check the memory corruption (an expensive operation), use `PetscStackPush()` to check the memory.
1502 
1503    Use `PetscStackPushExternal()` for a function call that is about to be made to a non-PETSc or user function (such as BLAS etc).
1504 
1505    The default stack is a global variable called `petscstack`.
1506 
1507 .seealso: `PetscAttachDebugger()`, `PetscStackCopy()`, `PetscStackView()`, `PetscStackPopNoCheck()`, `PetscCall()`, `PetscFunctionBegin()`,
1508           `PetscFunctionReturn()`, `PetscFunctionBeginHot()`, `PetscFunctionBeginUser()`, `PetscStackPush()`, `PetscStackPop`,
1509           `PetscStackPushExternal()`
1510 M*/
1511   #define PetscStackPushNoCheck(funct, petsc_routine, hot) \
1512     do { \
1513       PetscStackSAWsTakeAccess(); \
1514       PetscStackPush_Private(petscstack, __FILE__, funct, __LINE__, petsc_routine, hot); \
1515       PetscStackSAWsGrantAccess(); \
1516     } while (0)
1517 
1518   /*MC
1519    PetscStackUpdateLine - in a function that has a `PetscFunctionBegin` or `PetscFunctionBeginUser` updates the stack line number to the
1520    current line number.
1521 
1522    Synopsis:
1523    #include <petscsys.h>
1524    void PetscStackUpdateLine
1525 
1526    Not Collective
1527 
1528    Level: developer
1529 
1530    Notes:
1531    Using `PetscCall()` and friends automatically handles this process
1532 
1533    In debug mode PETSc maintains a stack of the current function calls that can be used to help to quickly see where a problem has
1534    occurred, for example, when a signal is received. It is recommended to use the debugger if extensive information is needed to
1535    help debug the problem.
1536 
1537    The default stack is a global variable called `petscstack`.
1538 
1539    This is used by `PetscCall()` and is otherwise not like to be needed
1540 
1541 .seealso: `PetscAttachDebugger()`, `PetscStackCopy()`, `PetscStackView()`, `PetscStackPushNoCheck()`, `PetscStackPop`, `PetscCall()`
1542 M*/
1543   #define PetscStackUpdateLine \
1544     do { \
1545       if (petscstack.currentsize > 0 && petscstack.currentsize < PETSCSTACKSIZE && petscstack.function[petscstack.currentsize - 1] == PETSC_FUNCTION_NAME) petscstack.line[petscstack.currentsize - 1] = __LINE__; \
1546     } while (0)
1547 
1548   /*MC
1549    PetscStackPushExternal - Pushes a new function name onto the PETSc default stack that tracks where the running program is
1550    currently in the source code. Does not include the filename or line number since this is called by the calling routine
1551    for non-PETSc or user functions.
1552 
1553    Synopsis:
1554    #include <petscsys.h>
1555    void PetscStackPushExternal(char *funct);
1556 
1557    Not Collective
1558 
1559    Input Parameter:
1560 .  funct - the function name
1561 
1562    Level: developer
1563 
1564    Notes:
1565    Using `PetscCallExternal()` and friends automatically handles this process
1566 
1567    In debug mode PETSc maintains a stack of the current function calls that can be used to help to quickly see where a problem has
1568    occurred, for example, when a signal is received. It is recommended to use the debugger if extensive information is needed to
1569    help debug the problem.
1570 
1571    The default stack is a global variable called `petscstack`.
1572 
1573    This is to be used when calling an external package function such as a BLAS function.
1574 
1575    This also updates the stack line number for the current stack function.
1576 
1577 .seealso: `PetscAttachDebugger()`, `PetscStackCopy()`, `PetscStackView()`, `PetscStackPopNoCheck()`, `PetscCall()`, `PetscFunctionBegin()`,
1578           `PetscFunctionReturn()`, `PetscFunctionBeginHot()`, `PetscFunctionBeginUser()`, `PetscStackPushNoCheck()`, `PetscStackPop`
1579 M*/
1580   #define PetscStackPushExternal(funct) \
1581     do { \
1582       PetscStackUpdateLine; \
1583       PetscStackPushNoCheck(funct, 0, PETSC_TRUE); \
1584     } while (0)
1585 
1586   /*MC
1587    PetscStackPopNoCheck - Pops a function name from the PETSc default stack that tracks where the running program is
1588    currently in the source code.
1589 
1590    Synopsis:
1591    #include <petscsys.h>
1592    void PetscStackPopNoCheck(char *funct);
1593 
1594    Not Collective
1595 
1596    Input Parameter:
1597 .   funct - the function name
1598 
1599    Level: developer
1600 
1601    Notes:
1602    Using `PetscCall()`, `PetscCallExternal()`, `PetscCallBack()` and friends negates the need to call this
1603 
1604    In debug mode PETSc maintains a stack of the current function calls that can be used to help to quickly see where a problem has
1605    occurred, for example, when a signal is received. It is recommended to use the debugger if extensive information is needed to
1606    help debug the problem.
1607 
1608    The default stack is a global variable called `petscstack`.
1609 
1610    Developer Note:
1611    `PetscStackPopNoCheck()` takes a function argument while  `PetscStackPop` does not, this difference is likely just historical.
1612 
1613 .seealso: `PetscAttachDebugger()`, `PetscStackCopy()`, `PetscStackView()`, `PetscStackPushNoCheck()`, `PetscStackPop`
1614 M*/
1615   #define PetscStackPopNoCheck(funct) \
1616     do { \
1617       PetscStackSAWsTakeAccess(); \
1618       PetscStackPop_Private(petscstack, funct); \
1619       PetscStackSAWsGrantAccess(); \
1620     } while (0)
1621 
1622   #define PetscStackClearTop \
1623     do { \
1624       PetscStackSAWsTakeAccess(); \
1625       if (petscstack.currentsize > 0 && --petscstack.currentsize < PETSCSTACKSIZE) { \
1626         petscstack.function[petscstack.currentsize]     = PETSC_NULLPTR; \
1627         petscstack.file[petscstack.currentsize]         = PETSC_NULLPTR; \
1628         petscstack.line[petscstack.currentsize]         = 0; \
1629         petscstack.petscroutine[petscstack.currentsize] = 0; \
1630       } \
1631       petscstack.hotdepth = PetscMax(petscstack.hotdepth - 1, 0); \
1632       PetscStackSAWsGrantAccess(); \
1633     } while (0)
1634 
1635   /*MC
1636    PetscFunctionBegin - First executable line of each PETSc function,  used for error handling. Final
1637    line of PETSc functions should be `PetscFunctionReturn`(0);
1638 
1639    Synopsis:
1640    #include <petscsys.h>
1641    void PetscFunctionBegin;
1642 
1643    Not Collective; No Fortran Support
1644 
1645    Usage:
1646 .vb
1647      int something;
1648 
1649      PetscFunctionBegin;
1650 .ve
1651 
1652    Level: developer
1653 
1654    Note:
1655    Use `PetscFunctionBeginUser` for application codes.
1656 
1657 .seealso: `PetscFunctionReturn()`, `PetscFunctionBeginHot()`, `PetscFunctionBeginUser()`, `PetscStackPushNoCheck()`
1658 
1659 M*/
1660   #define PetscFunctionBegin \
1661     do { \
1662       PetscStackPushNoCheck(PETSC_FUNCTION_NAME, 1, PETSC_FALSE); \
1663       PetscRegister__FUNCT__(); \
1664     } while (0)
1665 
1666   /*MC
1667    PetscFunctionBeginHot - Substitute for `PetscFunctionBegin` to be used in functions that are called in
1668    performance-critical circumstances.  Use of this function allows for lighter profiling by default.
1669 
1670    Synopsis:
1671    #include <petscsys.h>
1672    void PetscFunctionBeginHot;
1673 
1674    Not Collective; No Fortran Support
1675 
1676    Usage:
1677 .vb
1678      int something;
1679 
1680      PetscFunctionBeginHot;
1681 .ve
1682 
1683    Level: developer
1684 
1685 .seealso: `PetscFunctionBegin`, `PetscFunctionReturn()`, `PetscStackPushNoCheck()`
1686 
1687 M*/
1688   #define PetscFunctionBeginHot \
1689     do { \
1690       PetscStackPushNoCheck(PETSC_FUNCTION_NAME, 1, PETSC_TRUE); \
1691       PetscRegister__FUNCT__(); \
1692     } while (0)
1693 
1694   /*MC
1695    PetscFunctionBeginUser - First executable line of user provided routines
1696 
1697    Synopsis:
1698    #include <petscsys.h>
1699    void PetscFunctionBeginUser;
1700 
1701    Not Collective; No Fortran Support
1702 
1703    Usage:
1704 .vb
1705      int something;
1706 
1707      PetscFunctionBeginUser;
1708 .ve
1709 
1710    Level: intermediate
1711 
1712    Notes:
1713    Functions that incorporate this must call `PetscFunctionReturn()` instead of return except for main().
1714 
1715    May be used before `PetscInitialize()`
1716 
1717    This is identical to `PetscFunctionBegin` except it labels the routine as a user
1718    routine instead of as a PETSc library routine.
1719 
1720 .seealso: `PetscFunctionReturn()`, `PetscFunctionBegin`, `PetscFunctionBeginHot`, `PetscStackPushNoCheck()`
1721 M*/
1722   #define PetscFunctionBeginUser \
1723     do { \
1724       PetscStackPushNoCheck(PETSC_FUNCTION_NAME, 2, PETSC_FALSE); \
1725       PetscRegister__FUNCT__(); \
1726     } while (0)
1727 
1728   /*MC
1729    PetscStackPush - Pushes a new function name and line number onto the PETSc default stack that tracks where the running program is
1730    currently in the source code and verifies the memory is not corrupted.
1731 
1732    Synopsis:
1733    #include <petscsys.h>
1734    void PetscStackPush(char *funct)
1735 
1736    Not Collective
1737 
1738    Input Parameter:
1739 .  funct - the function name
1740 
1741    Level: developer
1742 
1743    Notes:
1744    In debug mode PETSc maintains a stack of the current function calls that can be used to help to quickly see where a problem has
1745    occurred, for example, when a signal is received. It is recommended to use the debugger if extensive information is needed to
1746    help debug the problem.
1747 
1748    The default stack is a global variable called `petscstack`.
1749 
1750 .seealso: `PetscAttachDebugger()`, `PetscStackCopy()`, `PetscStackView()`, `PetscStackPopNoCheck()`, `PetscCall()`, `PetscFunctionBegin()`,
1751           `PetscFunctionReturn()`, `PetscFunctionBeginHot()`, `PetscFunctionBeginUser()`, `PetscStackPushNoCheck()`, `PetscStackPop`
1752 M*/
1753   #define PetscStackPush(n) \
1754     do { \
1755       PetscStackPushNoCheck(n, 0, PETSC_FALSE); \
1756       CHKMEMQ; \
1757     } while (0)
1758 
1759   /*MC
1760    PetscStackPop - Pops a function name from the PETSc default stack that tracks where the running program is
1761    currently in the source code and verifies the memory is not corrupted.
1762 
1763    Synopsis:
1764    #include <petscsys.h>
1765    void PetscStackPop
1766 
1767    Not Collective
1768 
1769    Level: developer
1770 
1771    Notes:
1772    In debug mode PETSc maintains a stack of the current function calls that can be used to help to quickly see where a problem has
1773    occurred, for example, when a signal is received. It is recommended to use the debugger if extensive information is needed to
1774    help debug the problem.
1775 
1776    The default stack is a global variable called `petscstack`.
1777 
1778 .seealso: `PetscAttachDebugger()`, `PetscStackCopy()`, `PetscStackView()`, `PetscStackPushNoCheck()`, `PetscStackPopNoCheck()`, `PetscStackPush()`
1779 M*/
1780   #define PetscStackPop \
1781     do { \
1782       CHKMEMQ; \
1783       PetscStackPopNoCheck(PETSC_FUNCTION_NAME); \
1784     } while (0)
1785 
1786   /*MC
1787    PetscFunctionReturn - Last executable line of each PETSc function used for error
1788    handling. Replaces `return()`.
1789 
1790    Synopsis:
1791    #include <petscsys.h>
1792    void PetscFunctionReturn(...)
1793 
1794    Not Collective; No Fortran Support
1795 
1796    Level: beginner
1797 
1798    Notes:
1799    This routine is a macro, so while it does not "return" anything itself, it does return from
1800    the function in the literal sense.
1801 
1802    Usually the return value is the integer literal `0` (for example in any function returning
1803    `PetscErrorCode`), however it is possible to return any arbitrary type. The arguments of
1804    this macro are placed before the `return` statement as-is.
1805 
1806    Any routine which returns via `PetscFunctionReturn()` must begin with a corresponding
1807    `PetscFunctionBegin`.
1808 
1809    For routines which return `void` use `PetscFunctionReturnVoid()` instead.
1810 
1811    Example Usage:
1812 .vb
1813    PetscErrorCode foo(int *x)
1814    {
1815      PetscFunctionBegin; // don't forget the begin!
1816      *x = 10;
1817      PetscFunctionReturn(PETSC_SUCCESS);
1818    }
1819 .ve
1820 
1821    May return any arbitrary type\:
1822 .vb
1823   struct Foo
1824   {
1825     int x;
1826   };
1827 
1828   struct Foo make_foo(int value)
1829   {
1830     struct Foo f;
1831 
1832     PetscFunctionBegin;
1833     f.x = value;
1834     PetscFunctionReturn(f);
1835   }
1836 .ve
1837 
1838 .seealso: `PetscFunctionBegin`, `PetscFunctionBeginUser`, `PetscFunctionReturnVoid()`,
1839           `PetscStackPopNoCheck()`
1840 M*/
1841   #define PetscFunctionReturn(...) \
1842     do { \
1843       PetscStackPopNoCheck(PETSC_FUNCTION_NAME); \
1844       return __VA_ARGS__; \
1845     } while (0)
1846 
1847   /*MC
1848   PetscFunctionReturnVoid - Like `PetscFunctionReturn()` but returns `void`
1849 
1850   Synopsis:
1851   #include <petscsys.h>
1852   void PetscFunctionReturnVoid()
1853 
1854   Not Collective
1855 
1856   Level: beginner
1857 
1858   Note:
1859   Behaves identically to `PetscFunctionReturn()` except that it returns `void`. That is, this
1860   macro culminates with `return`.
1861 
1862   Example Usage:
1863 .vb
1864   void foo()
1865   {
1866     PetscFunctionBegin; // must start with PetscFunctionBegin!
1867     bar();
1868     baz();
1869     PetscFunctionReturnVoid();
1870   }
1871 .ve
1872 
1873 .seealso: `PetscFunctionReturn()`, `PetscFunctionBegin`, PetscFunctionBeginUser`
1874 M*/
1875   #define PetscFunctionReturnVoid() \
1876     do { \
1877       PetscStackPopNoCheck(PETSC_FUNCTION_NAME); \
1878       return; \
1879     } while (0)
1880 #else /* PETSC_USE_DEBUG */
1881   #define PetscStackPushNoCheck(funct, petsc_routine, hot)
1882   #define PetscStackUpdateLine
1883   #define PetscStackPushExternal(funct)
1884   #define PetscStackPopNoCheck(...)
1885   #define PetscStackClearTop
1886   #define PetscFunctionBegin
1887   #define PetscFunctionBeginUser
1888   #define PetscFunctionBeginHot
1889   #define PetscFunctionReturn(...)  return __VA_ARGS__
1890   #define PetscFunctionReturnVoid() return
1891   #define PetscStackPop             CHKMEMQ
1892   #define PetscStackPush(f)         CHKMEMQ
1893 #endif /* PETSC_USE_DEBUG */
1894 
1895 #if defined(PETSC_CLANG_STATIC_ANALYZER)
1896   #define PetscStackCallExternalVoid(...)
1897 template <typename F, typename... Args>
1898 void PetscCallExternal(F, Args...);
1899 template <typename F, typename... Args>
1900 void PetscCallExternalAbort(F, Args...);
1901 #else
1902   /*MC
1903     PetscStackCallExternalVoid - Calls an external library routine or user function after pushing the name of the routine on the stack.
1904 
1905    Input Parameters:
1906 +   name    - string that gives the name of the function being called
1907 -   routine - actual call to the routine, for example, functionname(a,b)
1908 
1909    Level: developer
1910 
1911    Notes:
1912    Often one should use `PetscCallExternal()` instead. This routine is intended for external library routines that DO NOT return error codes
1913 
1914    In debug mode this also checks the memory for corruption at the end of the function call.
1915 
1916    Certain external packages, such as BLAS/LAPACK may have their own macros, `PetscCallBLAS()` for managing the call, error checking, etc.
1917 
1918    Developer Note:
1919    This is so that when a user or external library routine results in a crash or corrupts memory, they get blamed instead of PETSc.
1920 
1921 .seealso: `PetscCall()`, `PetscStackPushNoCheck()`, `PetscStackPush()`, `PetscCallExternal()`, `PetscCallBLAS()`
1922 @*/
1923   #define PetscStackCallExternalVoid(name, ...) \
1924     do { \
1925       PetscStackPushExternal(name); \
1926       __VA_ARGS__; \
1927       PetscStackPop; \
1928     } while (0)
1929 
1930   /*MC
1931     PetscCallExternal - Calls an external library routine that returns an error code after pushing the name of the routine on the stack.
1932 
1933    Input Parameters:
1934 +  func - name of the routine
1935 -  args - arguments to the routine
1936 
1937    Level: developer
1938 
1939    Notes:
1940    This is intended for external package routines that return error codes. Use `PetscStackCallExternalVoid()` for those that do not.
1941 
1942    In debug mode this also checks the memory for corruption at the end of the function call.
1943 
1944    Assumes the error return code of the function is an integer and that a value of 0 indicates success
1945 
1946    Developer Note:
1947    This is so that when an external package routine results in a crash or corrupts memory, they get blamed instead of PETSc.
1948 
1949 .seealso: `PetscCall()`, `PetscStackPushNoCheck()`, `PetscStackPush()`, `PetscStackCallExternalVoid()`, `PetscCallExternalAbort()`
1950 M*/
1951   #define PetscCallExternal(func, ...) \
1952     do { \
1953       PetscStackPush(PetscStringize(func)); \
1954       int ierr_petsc_call_external_ = (int)func(__VA_ARGS__); \
1955       PetscStackPop; \
1956       PetscCheck(ierr_petsc_call_external_ == 0, PETSC_COMM_SELF, PETSC_ERR_LIB, "Error in %s(): error code %d", PetscStringize(func), ierr_petsc_call_external_); \
1957     } while (0)
1958 
1959   /*MC
1960     PetscCallExternalAbort - Calls an external library routine that returns an error code after pushing the name of the routine on the stack. If the external library function return code indicates an error, this prints the error and aborts
1961 
1962    Input Parameters:
1963 +  func - name of the routine
1964 -  args - arguments to the routine
1965 
1966    Level: developer
1967 
1968    Notes:
1969    This is intended for external package routines that return error codes. Use `PetscStackCallExternalVoid()` for those that do not.
1970 
1971    In debug mode this also checks the memory for corruption at the end of the function call.
1972 
1973    Assumes the error return code of the function is an integer and that a value of 0 indicates success
1974 
1975    Developer Note:
1976    This is so that when an external package routine results in a crash or corrupts memory, they get blamed instead of PETSc.
1977 
1978 .seealso: `PetscCall()`, `PetscStackPushNoCheck()`, `PetscStackPush()`, `PetscStackCallExternalVoid()`, `PetscCallExternal()`
1979 M*/
1980   #define PetscCallExternalAbort(func, ...) \
1981     do { \
1982       PetscStackUpdateLine; \
1983       int ierr_petsc_call_external_ = func(__VA_ARGS__); \
1984       if (PetscUnlikely(ierr_petsc_call_external_ != 0)) { \
1985         (void)PetscError(PETSC_COMM_SELF, __LINE__, PETSC_FUNCTION_NAME, __FILE__, PETSC_ERR_LIB, PETSC_ERROR_INITIAL, "Error in %s(): error code %d", PetscStringize(func), ierr_petsc_call_external_); \
1986         PETSCABORTWITHIERR_Private(PETSC_COMM_SELF, PETSC_ERR_LIB); \
1987       } \
1988     } while (0)
1989 #endif /* PETSC_CLANG_STATIC_ANALYZER */
1990