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42 :
43 : !> \brief This module contains classes and procedures for reporting and handling errors.
44 : !> \author Amir Shahmoradi
45 :
46 : module Err_mod
47 :
48 : character(*), parameter :: MODULE_NAME = "@Err_mod"
49 :
50 : logical , parameter :: ERR_HANDLING_REQUESTED = .false.
51 :
52 : #if defined CODECOV_ENABLED || defined BASIC_TEST_ENABLED || defined SAMPLER_TEST_ENABLED || ((defined MATLAB_ENABLED || defined PYTHON_ENABLED || defined R_ENABLED) && !defined CAF_ENABLED && !defined MPI_ENABLED)
53 : logical , parameter :: SOFT_EXIT_ENABLED = .true.
54 : #else
55 : logical , parameter :: SOFT_EXIT_ENABLED = .false.
56 : #endif
57 :
58 : !> The error type.
59 : type :: Err_type
60 : logical :: occurred = .false.
61 : integer :: stat = -huge(0) !< The output integer flag or status code by the compiler or program.
62 : integer :: statNull = -huge(0) !< The null value initially assigned to `stat`.
63 : character(:), allocatable :: msg !< The error message.
64 : end type Err_type
65 :
66 : logical :: mv_isTestingMode = .false. !< A logical flag, only to be used and set for testing purposes.
67 :
68 : !%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
69 :
70 : contains
71 :
72 : !%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
73 :
74 : !> Terminate or report the occurrence a fatal error and potentially terminate the program (if requested).
75 : !> @param[in] Err : An object of type [Err_type](@ref err_type) containing the error information.
76 : !> @param[in] prefix : The string to prepend to the error message (**optional**, default = dynamically set).
77 : !> @param[in] newline : The substring representing the newline character in the error message (**optional**, default = "\n").
78 : !> @param[in] outputUnit : The output file unit (**optional**, default = stdout).
79 : !> @param[in] returnEnabled : A logical value. If `.true.`, the program will not be abruptly terminated.
80 : !> Instead, the control is returned to the calling routine.
81 384 : subroutine abort(Err, prefix, newline, outputUnit, returnEnabled)
82 : #if INTEL_COMPILER_ENABLED && defined DLL_ENABLED && (OS_IS_WINDOWS || defined OS_IS_DARWIN)
83 : !DEC$ ATTRIBUTES DLLEXPORT :: abort
84 : #endif
85 : use, intrinsic :: iso_fortran_env, only: output_unit
86 : use Decoration_mod, only: write
87 : use Constants_mod, only: NLC
88 : implicit none
89 : type(Err_type) , intent(in), optional :: Err
90 : character(*) , intent(in), optional :: prefix, newline
91 : integer , intent(in), optional :: outputUnit
92 : logical , intent(in), optional :: returnEnabled
93 :
94 : logical :: returnEnabledDefault
95 384 : character(:), allocatable :: pfx, msg, nlstr
96 : character(63) :: dummyChar1, imageChar !, dummyChar2
97 :
98 384 : if (present(returnEnabled)) then
99 3 : returnEnabledDefault = returnEnabled
100 : else
101 381 : returnEnabledDefault = SOFT_EXIT_ENABLED
102 : end if
103 :
104 384 : if (present(Err)) then
105 :
106 : #if defined CAF_ENABLED
107 384 : write(imageChar ,"(g0)") this_image()
108 : #elif defined MPI_ENABLED
109 : block
110 : use mpi
111 : integer :: imageID, ierrMPI
112 : call mpi_comm_rank(mpi_comm_world, imageID, ierrMPI)
113 : write(imageChar ,"(g0)") imageID + 1
114 : end block
115 : #else
116 : imageChar = "1"
117 : #endif
118 :
119 384 : if (present(newline)) then
120 381 : nlstr = newline
121 : else
122 3 : nlstr = NLC
123 : end if
124 :
125 384 : if (Err%stat==Err%statNull) then ! it is a null error code, ignore it and do not report the error code
126 15 : msg = Err%msg
127 : else
128 369 : write(dummyChar1,"(g0)") Err%stat
129 : !write(dummyChar2,"(g0)") Err%statNull
130 : !msg = Err%msg // nlstr // "Error Code: " // trim(adjustl(dummyChar1)) // ". Null Error Code: " // trim(adjustl(dummyChar2)) // "."
131 369 : msg = Err%msg // nlstr // "Error Code: " // trim(adjustl(dummyChar1)) // "."
132 : end if
133 :
134 387 : if (present(prefix)) then
135 381 : call informUser(msg,prefix//" - FATAL: ",nlstr,outputUnit)
136 381 : pfx = prefix
137 : else
138 3 : call informUser(msg," - FATAL: ",nlstr,outputUnit)
139 3 : pfx = ""
140 : end if
141 :
142 384 : if (present(outputUnit)) then
143 384 : if (outputUnit/=output_unit) then
144 136 : call write(outputUnit,1,0,1, pfx // " - Please correct the error(s) and rerun the program." )
145 136 : call write(outputUnit,0,0,1, pfx // " - If the cause of the error cannot be diagnosed, please report it at:" )
146 136 : call write(outputUnit,0,0,1, pfx // " -" )
147 136 : call write(outputUnit,0,0,1, pfx // " - https://github.com/cdslaborg/paramonte/issues" )
148 136 : call write(outputUnit,0,0,1, pfx // " -" )
149 136 : call write(outputUnit,0,2,1, pfx // " - Gracefully exiting on image " // trim(adjustl(imageChar)) // "." )
150 : end if
151 : end if
152 :
153 : ! notify the user on screen too
154 :
155 384 : if (.not. mv_isTestingMode) then
156 : ! LCOV_EXCL_START
157 : call write(output_unit,1,0,1, pfx // " - FATAL: Runtime error occurred." )
158 : call write(output_unit,0,0,1, pfx // " - FATAL: For more information, see the output '*_report.txt' file (if generated)." )
159 : call write(output_unit,0,2,1, pfx // " - FATAL: Gracefully exiting on image " // trim(adjustl(imageChar)) // "." )
160 : end if
161 : ! LCOV_EXCL_STOP
162 :
163 384 : flush(output_unit) ! call execute_command_line(" ")
164 384 : flush(outputUnit)
165 :
166 : ! wait for one second:
167 : block
168 : use Constants_mod, only: RK
169 : use, intrinsic :: iso_fortran_env, only: int64
170 : integer(int64) :: countOld, countNew, countMax
171 384 : real(RK) :: countRate
172 384 : call system_clock( count=countOld, count_rate=countRate, count_max=countMax )
173 384 : if (countOld/=-huge(0_int64) .and. countRate/=0._RK .and. countMax==0_int64) then
174 : ! LCOV_EXCL_START
175 : loopWait: do
176 : call system_clock( count=countNew )
177 : if (countNew==countMax) then
178 : if (returnEnabledDefault) return
179 : error stop
180 : elseif ( real(countNew-countOld,kind=RK) / countRate >= 2._RK ) then
181 : exit loopWait
182 : end if
183 : cycle
184 : end do loopWait
185 : end if
186 : ! LCOV_EXCL_STOP
187 : end block
188 :
189 : end if
190 :
191 384 : if (returnEnabledDefault .or. mv_isTestingMode) return
192 :
193 : ! LCOV_EXCL_START
194 : #if defined MPI_ENABLED
195 : block
196 : use mpi
197 : integer :: ierrMPI, errcode
198 : errcode = 1; call mpi_abort(mpi_comm_world, errcode, ierrMPI)
199 : end block
200 : #else
201 : error stop
202 : #endif
203 : ! LCOV_EXCL_STOP
204 :
205 384 : end subroutine abort
206 :
207 : !%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
208 :
209 : !> Report warning message.
210 : !> @param[in] msg : The warning message.
211 : !> @param[in] prefix : The string to prepend to the error message (**optional**, default = dynamically set).
212 : !> @param[in] newline : The substring representing the newline character in the error message (**optional**, default = "\n").
213 : !> @param[in] outputUnit : The output file unit (**optional**, default = stdout).
214 : !> @param[in] marginTop : The number of empty lines before printing the message to the output (**optional**).
215 : !> @param[in] marginBot : The number of empty lines after printing the message to the output (**optional**).
216 803 : subroutine warn(msg,prefix,newline,outputUnit,marginTop,marginBot)
217 : #if INTEL_COMPILER_ENABLED && defined DLL_ENABLED && (OS_IS_WINDOWS || defined OS_IS_DARWIN)
218 : !DEC$ ATTRIBUTES DLLEXPORT :: warn
219 : #endif
220 384 : use Constants_mod, only: IK
221 : implicit none
222 : character(*), intent(in) :: msg
223 : character(*), intent(in), optional :: prefix, newline
224 : integer(IK) , intent(in), optional :: outputUnit,marginTop,marginBot
225 803 : if (present(prefix)) then
226 : call informUser ( msg = msg &
227 : , prefix = prefix // " - WARNING: " &
228 : , newline = newline &
229 : , outputUnit = outputUnit &
230 : , marginTop = marginTop &
231 : , marginBot = marginBot &
232 800 : )
233 : else
234 : call informUser ( msg = msg &
235 : , prefix = " - WARNING: " &
236 : , newline = newline &
237 : , outputUnit = outputUnit &
238 : , marginTop = marginTop &
239 : , marginBot = marginBot &
240 3 : )
241 : end if
242 1606 : end subroutine warn
243 :
244 : !%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
245 :
246 : !> Report a note.
247 : !> @param[in] msg : The warning message.
248 : !> @param[in] prefix : The string to prepend to the error message (**optional**, default = dynamically set).
249 : !> @param[in] newline : The substring representing the newline character in the error message (**optional**, default = "\n").
250 : !> @param[in] outputUnit : The output file unit (**optional**, default = stdout).
251 : !> @param[in] marginTop : The number of empty lines before printing the message to the output (**optional**).
252 : !> @param[in] marginBot : The number of empty lines after printing the message to the output (**optional**).
253 34203 : subroutine note(msg,prefix,newline,outputUnit,marginTop,marginBot)
254 : #if INTEL_COMPILER_ENABLED && defined DLL_ENABLED && (OS_IS_WINDOWS || defined OS_IS_DARWIN)
255 : !DEC$ ATTRIBUTES DLLEXPORT :: note
256 : #endif
257 803 : use Constants_mod, only: IK
258 : implicit none
259 : character(*), intent(in) :: msg
260 : character(*), intent(in), optional :: prefix, newline
261 : integer(IK) , intent(in), optional :: outputUnit,marginTop,marginBot
262 34203 : if (present(prefix)) then
263 : call informUser ( msg = msg &
264 : , prefix = prefix // " - NOTE: " &
265 : , newline = newline &
266 : , outputUnit = outputUnit &
267 : , marginTop = marginTop &
268 : , marginBot = marginBot &
269 34200 : )
270 : else
271 : call informUser ( msg = msg &
272 : , prefix = " - NOTE: " &
273 : , newline = newline &
274 : , outputUnit = outputUnit &
275 : , marginTop = marginTop &
276 : , marginBot = marginBot &
277 3 : )
278 : end if
279 68406 : end subroutine note
280 :
281 : !%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
282 :
283 : !> Write the input message to the output file unit.
284 : !> @param[in] msg : The warning message.
285 : !> @param[in] prefix : The string to prepend to the error message (**optional**, default = dynamically set).
286 : !> @param[in] newline : The substring representing the newline character in the error message (**optional**, default = "\n").
287 : !> @param[in] outputUnit : The output file unit (**optional**, default = stdout).
288 : !> @param[in] wrapSplit : The substring at which the input `msg` can be wrapped and continued on the next line (**optional**, default = " ").
289 : !> @param[in] wrapWidth : The maximum width of the line beyond which the input `msg` is wrapped and continued on the next line (**optional**, default = 100).
290 : !> @param[in] marginTop : The number of empty lines before printing the message to the output (**optional**).
291 : !> @param[in] marginBot : The number of empty lines after printing the message to the output (**optional**).
292 35749 : subroutine informUser(msg,prefix,newline,outputUnit,wrapSplit,wrapWidth,marginTop,marginBot)
293 : #if INTEL_COMPILER_ENABLED && defined DLL_ENABLED && (OS_IS_WINDOWS || defined OS_IS_DARWIN)
294 : !DEC$ ATTRIBUTES DLLEXPORT :: informUser
295 : #endif
296 : use, intrinsic :: iso_fortran_env, only: output_unit
297 34203 : use Decoration_mod, only: write, getListOfLines, wrapText
298 : use JaggedArray_mod, only: CharVec_type
299 : use Constants_mod, only: IK
300 : implicit none
301 : character(*), intent(in) :: msg
302 : character(*), intent(in), optional :: prefix, newline, wrapSplit
303 : integer(IK) , intent(in), optional :: outputUnit, wrapWidth, marginTop, marginBot
304 :
305 : integer(IK) :: stdout, sizeList, sizeListJustified
306 : integer(IK) :: irecord, ijustified, width
307 : integer(IK) :: padTop, padBot, padTopCurrent, padBotCurrent
308 35749 : character(:), allocatable :: pfx, split
309 35749 : type(CharVec_type), allocatable :: List(:), ListJustified(:)
310 :
311 35749 : if (present(outputUnit)) then
312 35749 : stdout = outputUnit
313 : ! LCOV_EXCL_START
314 : else
315 : stdout = output_unit
316 : end if
317 : ! LCOV_EXCL_STOP
318 35749 : if (present(prefix)) then
319 35749 : pfx = prefix
320 : else
321 0 : pfx = ""
322 : end if
323 35749 : if (present(wrapSplit)) then
324 0 : split = wrapSplit
325 : else
326 35749 : split = " "
327 : end if
328 35749 : if (present(wrapWidth)) then
329 359 : width = wrapWidth
330 : else
331 35390 : width = 100_IK
332 : end if
333 35749 : if (present(marginTop)) then
334 15154 : padTop = marginTop
335 : else
336 20595 : padTop = 1_IK
337 : end if
338 35749 : if (present(marginBot)) then
339 15272 : padBot = marginBot
340 : else
341 20477 : padBot = 1_IK
342 : end if
343 :
344 330704 : List = getListOfLines(string=msg,delimiter=newline)
345 35749 : sizeList = size(List)
346 165352 : do irecord = 1, sizeList
347 0 : ListJustified = wrapText( string = List(irecord)%record &
348 : , width = width &
349 : , split = split &
350 : , pad = " " &
351 900648 : )
352 129603 : sizeListJustified = size(ListJustified)
353 445028 : do ijustified = 1, sizeListJustified
354 279676 : padTopCurrent = 0_IK
355 279676 : padBotCurrent = 0_IK
356 279676 : if (irecord==1 .and. ijustified==1_IK) padTopCurrent = padTop ! the very first line
357 279676 : if (irecord==sizeList .and. ijustified==sizeListJustified) padBotCurrent = padBot ! the very last line
358 409279 : call write(stdout, padTopCurrent, padBotCurrent, 1_IK, pfx // ListJustified(ijustified)%record )
359 : end do
360 : end do
361 35749 : if (.not.present(marginBot)) call write(stdout)
362 :
363 287748 : end subroutine informUser
364 :
365 : !%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
366 :
367 : #if (defined MPI_ENABLED || defined CAF_ENABLED) && (defined CODECOV_ENABLED || defined SAMPLER_TEST_ENABLED)
368 : !> \brief
369 : !> Broadcast the error condition from all images to all images.
370 : !>
371 : !> \param[in] Err : An object of type [Err_type](@ref err_type) containing the error information.
372 : !>
373 : !> \warning
374 : !> This subroutine must be called in parallel by ALL images or NONE.
375 : !>
376 : !> \warning
377 : !> This function solely exist for soft handling of fatal errors in parallel testing mode and
378 : !> should therefore must never be defined and used in production builds. This function is defined
379 : !> by either `CODECOV_ENABLED` or `SAMPLER_TEST_ENABLED` preprocessor flags in parallel builds and if
380 : !> defined, it will SIGNIFICANTLY degrade the parallel performance of the code.
381 : !> Therefore, **`SAMPLER_TEST_ENABLED` should never be defined when building for production**.
382 7338 : subroutine bcastErr(Err)
383 : #if INTEL_COMPILER_ENABLED && defined DLL_ENABLED && (OS_IS_WINDOWS || defined OS_IS_DARWIN)
384 : !DEC$ ATTRIBUTES DLLEXPORT :: bcastErr
385 : #endif
386 35749 : use Constants_mod, only: IK
387 : implicit none
388 : type(Err_type), intent(inout) :: Err
389 : integer :: imageID, imageCount
390 : #if defined CAF_ENABLED
391 : block
392 : logical, allocatable, save :: ErrorOccurred(:)[:]
393 : integer(IK) :: i
394 7338 : imageID = this_image()
395 7338 : imageCount = num_images()
396 7338 : allocate(ErrorOccurred(imageCount)[*])
397 7338 : ErrorOccurred(imageID) = Err%occurred
398 7338 : sync all
399 29352 : do i = 1, imageCount
400 29352 : ErrorOccurred(i) = ErrorOccurred(i)[i]
401 : end do
402 28236 : Err%occurred = any(ErrorOccurred)
403 7338 : deallocate(ErrorOccurred)
404 : end block
405 : #elif defined MPI_ENABLED
406 : block
407 : use mpi
408 : integer :: ierrMPI
409 : logical, allocatable :: ErrorOccurred(:)
410 : call mpi_comm_rank(mpi_comm_world, imageID, ierrMPI)
411 : call mpi_comm_size(mpi_comm_world, imageCount, ierrMPI)
412 : allocate(ErrorOccurred(imageCount))
413 : call mpi_allgather ( Err%occurred & ! LCOV_EXCL_LINE : send buffer
414 : , 1 & ! LCOV_EXCL_LINE : send count
415 : , mpi_logical & ! LCOV_EXCL_LINE : send datatype
416 : , ErrorOccurred(:) & ! LCOV_EXCL_LINE : receive buffer
417 : , 1 & ! LCOV_EXCL_LINE : receive count
418 : , mpi_logical & ! LCOV_EXCL_LINE : receive datatype
419 : , mpi_comm_world & ! LCOV_EXCL_LINE : comm
420 : , ierrMPI & ! LCOV_EXCL_LINE : ierr
421 : )
422 : !call mpi_alltoall ( Err%occurred & ! buffer_send : The buffer containing the data that will be scattered to other processes.
423 : ! , 1 & ! count_send : The number of elements that will be sent to each process.
424 : ! , mpi_logical & ! datatype_send : The type of one send buffer element.
425 : ! , ErrorOccurred & ! buffer_recv : The buffer in which store the gathered data.
426 : ! , imageCount & ! count_recv : The number of elements in the message to receive per process, not the total number of elements to receive from all processes altogether.
427 : ! , mpi_logical & ! datatype_recv : The type of one receive buffer element.
428 : ! , mpi_comm_world & ! communicator : The communicator in which the all to all takes place.
429 : ! , ierrMPI & ! ierror : The error code returned from the all to all.
430 : ! )
431 : Err%occurred = any(ErrorOccurred)
432 : deallocate(ErrorOccurred)
433 : end block
434 : #endif
435 7338 : end subroutine bcastErr
436 : #endif
437 :
438 : !%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
439 :
440 : end module Err_mod ! LCOV_EXCL_LINE
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