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ESMF_Clock.F90 @ 2756

Last change on this file since 2756 was 11, checked in by aslmd, 14 years ago
spiga@svn-planeto:ajoute le modele meso-echelle martien
File size: 45.0 KB

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1	!
2	! Earth System Modeling Framework
3	! Copyright 2002-2003, University Corporation for Atmospheric Research,
4	! Massachusetts Institute of Technology, Geophysical Fluid Dynamics
5	! Laboratory, University of Michigan, National Centers for Environmental
6	! Prediction, Los Alamos National Laboratory, Argonne National Laboratory,
7	! NASA Goddard Space Flight Center.
8	! Licensed under the GPL.
9	!
10	!==============================================================================
11	!
12	! ESMF Clock Module
13	module ESMF_ClockMod
14	!
15	!==============================================================================
16	!
17	! This file contains the Clock class definition and all Clock class methods.
18	!
19	!------------------------------------------------------------------------------
20	! INCLUDES
21	#include <ESMF_TimeMgr.inc>
22
23	!==============================================================================
24	!BOPI
25	! !MODULE: ESMF_ClockMod
26	!
27	! !DESCRIPTION:
28	! Part of Time Manager F90 API wrapper of C++ implemenation
29	!
30	! Defines F90 wrapper entry points for corresponding
31	! C++ class {\tt ESMC\_Time} implementation
32	!
33	! See {\tt ../include/ESMC\_Clock.h} for complete description
34	!
35	!------------------------------------------------------------------------------
36	! !USES:
37	! inherit from ESMF base class
38	use ESMF_BaseMod
39
40	! associated derived types
41	use ESMF_TimeIntervalMod ! , only : ESMF_TimeInterval, &
42	! ESMF_TimeIntervalIsPositive
43	use ESMF_TimeMod ! , only : ESMF_Time
44	use ESMF_AlarmMod, only : ESMF_Alarm
45
46	implicit none
47	!
48	!------------------------------------------------------------------------------
49	! !PRIVATE TYPES:
50	private
51	!------------------------------------------------------------------------------
52	! ! ESMF_Clock
53	!
54	! ! F90 class type to match C++ Clock class in size only;
55	! ! all dereferencing within class is performed by C++ implementation
56
57	! internals for ESMF_Clock
58	type ESMF_ClockInt
59	type(ESMF_TimeInterval) :: TimeStep
60	type(ESMF_Time) :: StartTime
61	type(ESMF_Time) :: StopTime
62	type(ESMF_Time) :: RefTime
63	type(ESMF_Time) :: CurrTime
64	type(ESMF_Time) :: PrevTime
65	integer(ESMF_KIND_I8) :: AdvanceCount
66	integer :: ClockMutex
67	integer :: NumAlarms
68	! Note: to mimic ESMF 2.1.0+, AlarmList is maintained
69	! within ESMF_Clock even though copies of each alarm are
70	! returned from ESMF_AlarmCreate() at the same time they
71	! are copied into the AlarmList! This duplication is not
72	! as hideous as it might be because the ESMF_Alarm type
73	! has data members that are all POINTERs (thus the horrible
74	! shallow-copy-masquerading-as-reference-copy hack works).
75	type(ESMF_Alarm), pointer, dimension(:) :: AlarmList
76	end type
77
78	! Actual public type: this bit allows easy mimic of "deep" ESMF_ClockCreate
79	! in ESMF 2.1.0+
80	! NOTE: DO NOT ADD NON-POINTER STATE TO THIS DATA TYPE. It emulates ESMF
81	! shallow-copy-masquerading-as-reference-copy.
82	type ESMF_Clock
83	type(ESMF_ClockInt), pointer :: clockint
84	end type
85
86	!------------------------------------------------------------------------------
87	! !PUBLIC TYPES:
88	public ESMF_Clock
89	public ESMF_ClockInt ! needed on AIX but not PGI
90	!------------------------------------------------------------------------------
91	!
92	! !PUBLIC MEMBER FUNCTIONS:
93	public ESMF_ClockCreate
94	public ESMF_ClockDestroy
95	public ESMF_ClockSet
96	! public ESMF_ClockSetOLD
97	public ESMF_ClockGet
98	! public ESMF_ClockGetAdvanceCount
99	! public ESMF_ClockGetTimeStep
100	! public ESMF_ClockSetTimeStep
101	! public ESMF_ClockGetCurrTime
102	! public ESMF_ClockSetCurrTime
103	! public ESMF_ClockGetStartTime
104	! public ESMF_ClockGetStopTime
105	! public ESMF_ClockGetRefTime
106	! public ESMF_ClockGetPrevTime
107	! public ESMF_ClockGetCurrSimTime
108	! public ESMF_ClockGetPrevSimTime
109	! This must be public for ESMF_AlarmClockMod...
110	public ESMF_ClockAddAlarm
111	public ESMF_ClockGetAlarmList
112	! public ESMF_ClockGetNumAlarms
113	! public ESMF_ClockSyncToWallClock
114	public ESMF_ClockAdvance
115	public ESMF_ClockIsStopTime
116	public ESMF_ClockStopTimeDisable
117
118	! Required inherited and overridden ESMF_Base class methods
119
120	! public ESMF_ClockRead
121	! public ESMF_ClockWrite
122	public ESMF_ClockValidate
123	public ESMF_ClockPrint
124	!EOPI
125
126	!==============================================================================
127
128	contains
129
130	!==============================================================================
131	!
132	! This section includes the Set methods.
133	!
134	!------------------------------------------------------------------------------
135	!BOP
136	! !IROUTINE: ESMF_ClockSetOLD - Initialize a clockint
137
138	! !INTERFACE:
139	subroutine ESMF_ClockSetOLD(clockint, TimeStep, StartTime, &
140	StopTime, RefTime, rc)
141
142	! !ARGUMENTS:
143	type(ESMF_ClockInt), intent(out) :: clockint
144	type(ESMF_TimeInterval), intent(in), optional :: TimeStep
145	type(ESMF_Time), intent(in) :: StartTime
146	type(ESMF_Time), intent(in) :: StopTime
147	type(ESMF_Time), intent(in), optional :: RefTime
148	integer, intent(out), optional :: rc
149	! Local
150	integer i
151
152	! !DESCRIPTION:
153	! Initialize an {\tt ESMF\_Clock}
154	!
155	! The arguments are:
156	! \begin{description}
157	! \item[clockint]
158	! The object instance to initialize
159	! \item[{[TimeStep]}]
160	! The {\tt ESMF\_Clock}'s time step interval
161	! \item[StartTime]
162	! The {\tt ESMF\_Clock}'s starting time
163	! \item[StopTime]
164	! The {\tt ESMF\_Clock}'s stopping time
165	! \item[{[RefTime]}]
166	! The {\tt ESMF\_Clock}'s reference time
167	! \item[{[rc]}]
168	! Return code; equals {\tt ESMF\_SUCCESS} if there are no errors.
169	! \end{description}
170	!
171	! !REQUIREMENTS:
172	! TMG3.1, TMG3.4.4
173	!EOP
174	IF ( PRESENT(TimeStep) ) clockint%TimeStep = TimeStep
175	IF ( PRESENT(RefTime) )THEN
176	clockint%RefTime = RefTime
177	ELSE
178	clockint%RefTime = StartTime
179	END IF
180	clockint%CurrTime = StartTime
181	clockint%StartTime = StartTime
182	clockint%StopTime = StopTime
183	clockint%NumAlarms = 0
184	clockint%AdvanceCount = 0
185	ALLOCATE(clockint%AlarmList(MAX_ALARMS))
186	! TBH: This incredible hack can be removed once ESMF_*Validate()
187	! TBH: can tell if a deep ESMF_* was created or not.
188	DO i = 1, MAX_ALARMS
189	NULLIFY( clockint%AlarmList( i )%alarmint )
190	ENDDO
191	IF ( PRESENT( rc ) ) rc = ESMF_SUCCESS
192
193	end subroutine ESMF_ClockSetOLD
194
195
196	! !IROUTINE: ESMF_ClockSet - Set clock properties -- for compatibility with ESMF 2.0.1
197
198	! !INTERFACE:
199	subroutine ESMF_ClockSet(clock, TimeStep, StartTime, StopTime, &
200	RefTime, CurrTime, rc)
201
202	! !ARGUMENTS:
203	type(ESMF_Clock), intent(inout) :: clock
204	type(ESMF_TimeInterval), intent(in), optional :: TimeStep
205	type(ESMF_Time), intent(in), optional :: StartTime
206	type(ESMF_Time), intent(in), optional :: StopTime
207	type(ESMF_Time), intent(in), optional :: RefTime
208	type(ESMF_Time), intent(in), optional :: CurrTime
209	integer, intent(out), optional :: rc
210	! Local
211	integer ierr
212
213	! !DESCRIPTION:
214	! Initialize an {\tt ESMF\_Clock}
215	!
216	! The arguments are:
217	! \begin{description}
218	! \item[clock]
219	! The object instance to initialize
220	! \item[{[TimeStep]}]
221	! The {\tt ESMF\_Clock}'s time step interval
222	! \item[StartTime]
223	! The {\tt ESMF\_Clock}'s starting time
224	! \item[StopTime]
225	! The {\tt ESMF\_Clock}'s stopping time
226	! \item[{[RefTime]}]
227	! The {\tt ESMF\_Clock}'s reference time
228	! \item[{[rc]}]
229	! Return code; equals {\tt ESMF\_SUCCESS} if there are no errors.
230	! \end{description}
231	!
232	! !REQUIREMENTS:
233	! TMG3.1, TMG3.4.4
234	!EOP
235	ierr = ESMF_SUCCESS
236	IF ( PRESENT(TimeStep) ) THEN
237	CALL ESMF_ClockSetTimeStep ( clock, TimeStep, rc=ierr )
238	ENDIF
239	IF ( PRESENT(RefTime) ) clock%clockint%RefTime = RefTime
240	IF ( PRESENT(StartTime) ) clock%clockint%StartTime = StartTime
241	IF ( PRESENT(StopTime) ) clock%clockint%StopTime = StopTime
242	IF ( PRESENT(CurrTime) ) THEN
243	CALL ESMF_ClockSetCurrTime(clock, CurrTime, rc=ierr)
244	ENDIF
245	IF ( PRESENT(rc) ) rc = ierr
246
247	end subroutine ESMF_ClockSet
248
249
250	! Create ESMF_Clock using ESMF 2.1.0+ semantics
251	FUNCTION ESMF_ClockCreate( name, TimeStep, StartTime, StopTime, &
252	RefTime, rc )
253	! return value
254	type(ESMF_Clock) :: ESMF_ClockCreate
255	! !ARGUMENTS:
256	character (len=*), intent(in), optional :: name
257	type(ESMF_TimeInterval), intent(in), optional :: TimeStep
258	type(ESMF_Time), intent(in) :: StartTime
259	type(ESMF_Time), intent(in) :: StopTime
260	type(ESMF_Time), intent(in), optional :: RefTime
261	integer, intent(out), optional :: rc
262	! locals
263	type(ESMF_Clock) :: clocktmp
264	! TBH: ignore allocate errors, for now
265	ALLOCATE( clocktmp%clockint )
266	CALL ESMF_ClockSetOLD( clocktmp%clockint, &
267	TimeStep= TimeStep, &
268	StartTime=StartTime, &
269	StopTime= StopTime, &
270	RefTime=RefTime, rc=rc )
271	ESMF_ClockCreate = clocktmp
272	END FUNCTION ESMF_ClockCreate
273
274
275	! Deallocate memory for ESMF_Clock
276	SUBROUTINE ESMF_ClockDestroy( clock, rc )
277	TYPE(ESMF_Clock), INTENT(INOUT) :: clock
278	INTEGER, INTENT( OUT), OPTIONAL :: rc
279	! TBH: ignore deallocate errors, for now
280	DEALLOCATE( clock%clockint%AlarmList )
281	DEALLOCATE( clock%clockint )
282	IF ( PRESENT( rc ) ) rc = ESMF_SUCCESS
283	END SUBROUTINE ESMF_ClockDestroy
284
285
286	!------------------------------------------------------------------------------
287	!BOP
288	! !IROUTINE: ESMF_ClockGet - Get clock properties -- for compatibility with ESMF 2.0.1
289
290	! !INTERFACE:
291	subroutine ESMF_ClockGet(clock, StartTime, CurrTime, &
292	AdvanceCount, StopTime, TimeStep, &
293	PrevTime, RefTime, &
294	rc)
295
296	! !ARGUMENTS:
297	type(ESMF_Clock), intent(in) :: clock
298	type(ESMF_Time), intent(out), optional :: StartTime
299	type(ESMF_Time), intent(out), optional :: CurrTime
300	type(ESMF_Time), intent(out), optional :: StopTime
301	type(ESMF_Time), intent(out), optional :: PrevTime
302	type(ESMF_Time), intent(out), optional :: RefTime
303	integer(ESMF_KIND_I8), intent(out), optional :: AdvanceCount
304	type(ESMF_TimeInterval), intent(out), optional :: TimeStep
305	integer, intent(out), optional :: rc
306	integer :: ierr
307
308	! !DESCRIPTION:
309	! Returns the number of times the {\tt ESMF\_Clock} has been advanced
310	! (time stepped)
311	!
312	! The arguments are:
313	! \begin{description}
314	! \item[clock]
315	! The object instance to get the advance count from
316	! \item[StartTime]
317	! The start time
318	! \item[CurrTime]
319	! The current time
320	! \item[AdvanceCount]
321	! The number of times the {\tt ESMF\_Clock} has been advanced
322	! \item[StopTime]
323	! The {\tt ESMF\_Clock}'s stopping time
324	! \item[{[TimeStep]}]
325	! The {\tt ESMF\_Clock}'s time step interval
326	! \item[{[PrevTime]}]
327	! The {\tt ESMF\_Clock}'s previous current time
328	! \item[{[PrevTime]}]
329	! The {\tt ESMF\_Clock}'s reference time
330	! \item[{[rc]}]
331	! Return code; equals {\tt ESMF\_SUCCESS} if there are no errors.
332	! \end{description}
333
334	! !REQUIREMENTS:
335	! TMG3.5.1
336	!EOP
337	ierr = ESMF_SUCCESS
338
339	IF ( PRESENT (StartTime) ) THEN
340	CALL ESMF_ClockGetStartTime( clock, StartTime=StartTime, rc=ierr )
341	ENDIF
342	IF ( PRESENT (CurrTime) ) THEN
343	CALL ESMF_ClockGetCurrTime( clock , CurrTime, ierr )
344	ENDIF
345	IF ( PRESENT (StopTime) ) THEN
346	CALL ESMF_ClockGetStopTime( clock , StopTime, ierr )
347	ENDIF
348	IF ( PRESENT (AdvanceCount) ) THEN
349	CALL ESMF_ClockGetAdvanceCount(clock, AdvanceCount, ierr)
350	ENDIF
351	IF ( PRESENT (TimeStep) ) THEN
352	CALL ESMF_ClockGetTimeStep(clock, TimeStep, ierr)
353	ENDIF
354	IF ( PRESENT (PrevTime) ) THEN
355	CALL ESMF_ClockGetPrevTime(clock, PrevTime, ierr)
356	ENDIF
357	IF ( PRESENT (RefTime) ) THEN
358	CALL ESMF_ClockGetRefTime(clock, RefTime, ierr)
359	ENDIF
360
361	IF ( PRESENT (rc) ) THEN
362	rc = ierr
363	ENDIF
364
365	end subroutine ESMF_ClockGet
366
367
368	! !IROUTINE: ESMF_ClockGetAdvanceCount - Get the clock's advance count
369
370	! !INTERFACE:
371	subroutine ESMF_ClockGetAdvanceCount(clock, AdvanceCount, rc)
372
373	! !ARGUMENTS:
374	type(ESMF_Clock), intent(in) :: clock
375	integer(ESMF_KIND_I8), intent(out) :: AdvanceCount
376	integer, intent(out), optional :: rc
377
378	! !DESCRIPTION:
379	! Returns the number of times the {\tt ESMF\_Clock} has been advanced
380	! (time stepped)
381	!
382	! The arguments are:
383	! \begin{description}
384	! \item[clock]
385	! The object instance to get the advance count from
386	! \item[AdvanceCount]
387	! The number of times the {\tt ESMF\_Clock} has been advanced
388	! \item[{[rc]}]
389	! Return code; equals {\tt ESMF\_SUCCESS} if there are no errors.
390	! \end{description}
391
392	! !REQUIREMENTS:
393	! TMG3.5.1
394	!EOP
395
396	AdvanceCount = clock%clockint%AdvanceCount
397
398	IF ( PRESENT(rc) ) rc = ESMF_SUCCESS
399
400	end subroutine ESMF_ClockGetAdvanceCount
401
402	!------------------------------------------------------------------------------
403	!BOP
404	! !IROUTINE: ESMF_ClockGetTimeStep - Get a clock's timestep interval
405
406	! !INTERFACE:
407	subroutine ESMF_ClockGetTimeStep(clock, TimeStep, rc)
408
409	! !ARGUMENTS:
410	type(ESMF_Clock), intent(in) :: clock
411	type(ESMF_TimeInterval), intent(out) :: TimeStep
412	integer, intent(out), optional :: rc
413
414	! !DESCRIPTION:
415	! Get an {\tt ESMF\_Clock}'s timestep interval
416	!
417	! The arguments are:
418	! \begin{description}
419	! \item[clock]
420	! The object instance to get the time step from
421	! \item[TimeStep]
422	! The time step
423	! \item[{[rc]}]
424	! Return code; equals {\tt ESMF\_SUCCESS} if there are no errors.
425	! \end{description}
426	!
427	! !REQUIREMENTS:
428	! TMG3.5.2
429	!EOP
430
431	TimeStep = clock%clockint%TimeStep
432	IF ( PRESENT(rc) ) rc = ESMF_SUCCESS
433
434	end subroutine ESMF_ClockGetTimeStep
435
436	!------------------------------------------------------------------------------
437	!BOP
438	! !IROUTINE: ESMF_ClockSetTimeStep - Set a clock's timestep interval
439
440	! !INTERFACE:
441	subroutine ESMF_ClockSetTimeStep(clock, TimeStep, rc)
442
443	! !ARGUMENTS:
444	type(ESMF_Clock), intent(out) :: clock
445	type(ESMF_TimeInterval), intent(in) :: TimeStep
446	integer, intent(out), optional :: rc
447
448	! !DESCRIPTION:
449	! Set an {\tt ESMF\_Clock}'s timestep interval
450	!
451	! The arguments are:
452	! \begin{description}
453	! \item[clock]
454	! The object instance to set the time step
455	! \item[TimeStep]
456	! The time step
457	! \item[{[rc]}]
458	! Return code; equals {\tt ESMF\_SUCCESS} if there are no errors.
459	! \end{description}
460	!
461	! !REQUIREMENTS:
462	! TMG3.4.2
463	!EOP
464
465	clock%clockint%TimeStep = TimeStep
466	IF ( PRESENT(rc) ) rc = ESMF_SUCCESS
467
468	end subroutine ESMF_ClockSetTimeStep
469
470	!------------------------------------------------------------------------------
471	!BOP
472	! !IROUTINE: ESMF_ClockGetCurrTime - Get a clock's current time
473
474	! !INTERFACE:
475	subroutine ESMF_ClockGetCurrTime(clock, CurrTime, rc)
476
477	! !ARGUMENTS:
478	type(ESMF_Clock), intent(in) :: clock
479	type(ESMF_Time), intent(out) :: CurrTime
480	integer, intent(out), optional :: rc
481
482	! !DESCRIPTION:
483	! Get an {\tt ESMF\_Clock}'s current time
484	!
485	! The arguments are:
486	! \begin{description}
487	! \item[clock]
488	! The object instance to get the current time from
489	! \item[CurrTime]
490	! The current time
491	! \item[{[rc]}]
492	! Return code; equals {\tt ESMF\_SUCCESS} if there are no errors.
493	! \end{description}
494	!
495	! !REQUIREMENTS:
496	! TMG3.5.4
497	!EOP
498
499	CurrTime = clock%clockint%CurrTime
500	IF ( PRESENT(rc) ) rc = ESMF_SUCCESS
501	end subroutine ESMF_ClockGetCurrTime
502
503	!------------------------------------------------------------------------------
504	!BOP
505	! !IROUTINE: ESMF_ClockSetCurrTime - Set a clock's current time
506
507	! !INTERFACE:
508	subroutine ESMF_ClockSetCurrTime(clock, CurrTime, rc)
509
510	! !ARGUMENTS:
511	type(ESMF_Clock), intent(out) :: clock
512	type(ESMF_Time), intent(in) :: CurrTime
513	integer, intent(out), optional :: rc
514
515	! !DESCRIPTION:
516	! Set an {\tt ESMF\_Clock}'s current time
517	!
518	! The arguments are:
519	! \begin{description}
520	! \item[clock]
521	! The object instance to set the current time from
522	! \item[CurrTime]
523	! The current time
524	! \item[{[rc]}]
525	! Return code; equals {\tt ESMF\_SUCCESS} if there are no errors.
526	! \end{description}
527	!
528	! !REQUIREMENTS:
529	! TMG3.4.3
530	!EOP
531
532	clock%clockint%CurrTime = CurrTime
533	IF ( PRESENT(rc) ) rc = ESMF_SUCCESS
534
535	end subroutine ESMF_ClockSetCurrTime
536
537	!------------------------------------------------------------------------------
538	!BOP
539	! !IROUTINE: ESMF_ClockGetStartTime - Get a clock's start time
540
541	! !INTERFACE:
542	subroutine ESMF_ClockGetStartTime(clock, StartTime, rc)
543
544	! !ARGUMENTS:
545	type(ESMF_Clock), intent(in) :: clock
546	type(ESMF_Time), intent(out) :: StartTime
547	integer, intent(out), optional :: rc
548
549	! !DESCRIPTION:
550	! Get an {\tt ESMF\_Clock}'s start time
551	!
552	! The arguments are:
553	! \begin{description}
554	! \item[clock]
555	! The object instance to get the start time from
556	! \item[StartTime]
557	! The start time
558	! \item[{[rc]}]
559	! Return code; equals {\tt ESMF\_SUCCESS} if there are no errors.
560	! \end{description}
561	!
562	! !REQUIREMENTS:
563	! TMG3.5.3
564	!EOP
565
566	StartTime = clock%clockint%StartTime
567	IF ( PRESENT(rc) ) rc = ESMF_SUCCESS
568
569	end subroutine ESMF_ClockGetStartTime
570
571	!------------------------------------------------------------------------------
572	!BOP
573	! !IROUTINE: ESMF_ClockGetStopTime - Get a clock's stop time
574
575	! !INTERFACE:
576	subroutine ESMF_ClockGetStopTime(clock, StopTime, rc)
577
578	! !ARGUMENTS:
579	type(ESMF_Clock), intent(in) :: clock
580	type(ESMF_Time), intent(out) :: StopTime
581	integer, intent(out), optional :: rc
582
583	! !DESCRIPTION:
584	! Get an {\tt ESMF\_Clock}'s stop time
585	!
586	! The arguments are:
587	! \begin{description}
588	! \item[clock]
589	! The object instance to get the stop time from
590	! \item[StopTime]
591	! The stop time
592	! \item[{[rc]}]
593	! Return code; equals {\tt ESMF\_SUCCESS} if there are no errors.
594	! \end{description}
595	!
596	! !REQUIREMENTS:
597	! TMG3.5.3
598	!EOP
599
600	StopTime = clock%clockint%StopTime
601	IF ( PRESENT(rc) ) rc = ESMF_SUCCESS
602
603	end subroutine ESMF_ClockGetStopTime
604
605	!------------------------------------------------------------------------------
606	!BOP
607	! !IROUTINE: ESMF_ClockGetRefTime - Get a clock's reference time
608
609	! !INTERFACE:
610	subroutine ESMF_ClockGetRefTime(clock, RefTime, rc)
611
612	! !ARGUMENTS:
613	type(ESMF_Clock), intent(in) :: clock
614	type(ESMF_Time), intent(out) :: RefTime
615	integer, intent(out), optional :: rc
616
617	! !DESCRIPTION:
618	! Get an {\tt ESMF\_Clock}'s reference time
619	!
620	! The arguments are:
621	! \begin{description}
622	! \item[clock]
623	! The object instance to get the reference time from
624	! \item[RefTime]
625	! The reference time
626	! \item[{[rc]}]
627	! Return code; equals {\tt ESMF\_SUCCESS} if there are no errors.
628	! \end{description}
629	!
630	! !REQUIREMENTS:
631	! TMG3.5.3
632	!EOP
633	refTime = clock%clockint%RefTime
634	IF ( PRESENT(rc) ) rc = ESMF_SUCCESS
635	end subroutine ESMF_ClockGetRefTime
636
637	!------------------------------------------------------------------------------
638	!BOP
639	! !IROUTINE: ESMF_ClockGetPrevTime - Get a clock's previous current time
640
641	! !INTERFACE:
642	subroutine ESMF_ClockGetPrevTime(clock, PrevTime, rc)
643
644	! !ARGUMENTS:
645	type(ESMF_Clock), intent(in) :: clock
646	type(ESMF_Time), intent(out) :: PrevTime
647	integer, intent(out), optional :: rc
648
649	! !DESCRIPTION:
650	! Get an {\tt ESMF\_Clock}'s previous current time
651	!
652	! The arguments are:
653	! \begin{description}
654	! \item[clock]
655	! The object instance to get the previous current time from
656	! \item[PrevTime]
657	! The previous current time
658	! \item[{[rc]}]
659	! Return code; equals {\tt ESMF\_SUCCESS} if there are no errors.
660	! \end{description}
661	!
662	! !REQUIREMENTS:
663	! TMG3.5.4
664	!EOP
665
666	! hack for bug in PGI 5.1-x
667	! prevTime = Clock%clockint%CurrTime - Clock%clockint%TimeStep
668	prevTime = ESMF_TimeDec( Clock%clockint%CurrTime, &
669	Clock%clockint%TimeStep )
670
671	IF ( PRESENT(rc) ) rc = ESMF_SUCCESS
672	end subroutine ESMF_ClockGetPrevTime
673
674	!------------------------------------------------------------------------------
675	!BOP
676	! !IROUTINE: ESMF_ClockGetCurrSimTime - Get a clock's current simulation time
677
678	! !INTERFACE:
679	subroutine ESMF_ClockGetCurrSimTime(clock, CurrSimTime, rc)
680
681	! !ARGUMENTS:
682	type(ESMF_Clock), intent(in) :: clock
683	type(ESMF_TimeInterval), intent(out) :: CurrSimTime
684	integer, intent(out), optional :: rc
685
686	! !DESCRIPTION:
687	! Get an {\tt ESMF\_Clock}'s current simulation time
688	!
689	! The arguments are:
690	! \begin{description}
691	! \item[clock]
692	! The object instance to get the current simulation time from
693	! \item[CurrSimTime]
694	! The current simulation time
695	! \item[{[rc]}]
696	! Return code; equals {\tt ESMF\_SUCCESS} if there are no errors.
697	! \end{description}
698	!
699	! !REQUIREMENTS:
700	! TMG3.5.5
701	!EOP
702	CALL wrf_error_fatal( 'ESMF_ClockGetCurrSimTime not supported' )
703	end subroutine ESMF_ClockGetCurrSimTime
704
705	!------------------------------------------------------------------------------
706	!BOP
707	! !IROUTINE: ESMF_ClockGetPrevSimTime - Get a clock's previous simulation time
708
709	! !INTERFACE:
710	subroutine ESMF_ClockGetPrevSimTime(clock, PrevSimTime, rc)
711
712	! !ARGUMENTS:
713	type(ESMF_Clock), intent(in) :: clock
714	type(ESMF_TimeInterval), intent(out) :: PrevSimTime
715	integer, intent(out), optional :: rc
716
717	! !DESCRIPTION:
718	! Get an {\tt ESMF\_Clock}'s previous simulation time
719	!
720	! The arguments are:
721	! \begin{description}
722	! \item[clock]
723	! The object instance to get the previous simulation time from
724	! \item[PrevSimTime]
725	! The previous simulation time
726	! \item[{[rc]}]
727	! Return code; equals {\tt ESMF\_SUCCESS} if there are no errors.
728	! \end{description}
729	!
730	! !REQUIREMENTS:
731	! TMG3.5.5
732	!EOP
733	CALL wrf_error_fatal( 'ESMF_ClockGetPrevSimTime not supported' )
734	end subroutine ESMF_ClockGetPrevSimTime
735
736	!------------------------------------------------------------------------------
737	!BOP
738	! !IROUTINE: ESMF_ClockAddAlarm - Add an alarm to a clock's alarm list
739
740	! !INTERFACE:
741	subroutine ESMF_ClockAddAlarm(clock, Alarm, rc)
742
743	! !ARGUMENTS:
744	type(ESMF_Clock), intent(inout) :: clock
745	type(ESMF_Alarm), intent(inout) :: Alarm
746	integer, intent(out), optional :: rc
747
748	! !DESCRIPTION:
749	! Add an {\tt ESMF\_Alarm} to an {\tt ESMF\_Clock}'s {\tt ESMF\_Alarm} list
750	!
751	! The arguments are:
752	! \begin{description}
753	! \item[clock]
754	! The object instance to add an {\tt ESMF\_Alarm} to
755	! \item[Alarm]
756	! The {\tt ESMF\_Alarm} to add to the {\tt ESMF\_Clock}'s
757	! {\tt ESMF\_Alarm} list
758	! \item[{[rc]}]
759	! Return code; equals {\tt ESMF\_SUCCESS} if there are no errors.
760	! \end{description}
761	!
762	! !REQUIREMENTS:
763	! TMG4.1, TMG4.2
764	!EOP
765
766	IF ( PRESENT( rc ) ) rc = ESMF_SUCCESS
767	clock%clockint%NumAlarms = clock%clockint%NumAlarms + 1
768	IF ( clock%clockint%NumAlarms > SIZE (clock%clockint%AlarmList) ) THEN
769	CALL wrf_error_fatal ( 'ESMF_ClockAddAlarm: too many alarms' )
770	ELSE IF ( .NOT. ASSOCIATED( Alarm%alarmint ) ) THEN
771	CALL wrf_error_fatal ( &
772	'ESMF_ClockAddAlarm: alarm not created' )
773	ELSE
774	IF ( Alarm%alarmint%RingTimeSet ) THEN
775	Alarm%alarmint%PrevRingTime = Alarm%alarmint%RingTime
776	ELSE
777	!TBH: This has the nasty side-effect of forcing us to explicitly turn on
778	!TBH: alarms that are created with RingInterval only, if we want them to start
779	!TBH: ringing right away. And this is done (see
780	!TBH: COMPUTE_VORTEX_CENTER_ALARM). Straighten this out...
781	Alarm%alarmint%PrevRingTime = clock%clockint%CurrTime
782	ENDIF
783	Alarm%alarmint%Ringing = .FALSE.
784
785	! finally, load the alarm into the list
786	clock%clockint%AlarmList(clock%clockint%NumAlarms) = Alarm
787	ENDIF
788
789	end subroutine ESMF_ClockAddAlarm
790
791	!------------------------------------------------------------------------------
792	!BOP
793	! !IROUTINE: ESMF_ClockGetAlarmList - Get a clock's alarm list
794
795	! !INTERFACE:
796	subroutine ESMF_ClockGetAlarmList(clock, AlarmList, rc)
797
798	! !ARGUMENTS:
799	type(ESMF_Clock), intent(in) :: clock
800	type(ESMF_Alarm), pointer :: AlarmList(:)
801	integer, intent(out), optional :: rc
802
803	! !DESCRIPTION:
804	! Get an {\tt ESMF\_Clock}'s {\tt ESMF\_Alarm} list
805	!
806	! The arguments are:
807	! \begin{description}
808	! \item[clock]
809	! The object instance to get the {\tt ESMF\_Alarm} list from
810	! \item[AlarmList]
811	! The {\tt ESMF\_Clock}'s {\tt ESMF\_Alarm} list
812	! \item[{[rc]}]
813	! Return code; equals {\tt ESMF\_SUCCESS} if there are no errors.
814	! \end{description}
815	!
816	! !REQUIREMENTS:
817	! TMG4.3
818	!EOP
819
820	AlarmList => clock%clockint%AlarmList
821	IF ( PRESENT(rc) ) rc = ESMF_SUCCESS
822
823	end subroutine ESMF_ClockGetAlarmList
824
825	!------------------------------------------------------------------------------
826	!BOP
827	! !IROUTINE: ESMF_ClockGetNumAlarms - Get the number of alarms in a clock's alarm list
828
829	! !INTERFACE:
830	subroutine ESMF_ClockGetNumAlarms(clock, NumAlarms, rc)
831
832	! !ARGUMENTS:
833	type(ESMF_Clock), intent(in) :: clock
834	integer, intent(out) :: NumAlarms
835	integer, intent(out), optional :: rc
836
837	! !DESCRIPTION:
838	! Get the number of {\tt ESMF\_Alarm}s in an {\tt ESMF\_Clock}'s
839	! {\tt ESMF\_Alarm} list
840	!
841	! The arguments are:
842	! \begin{description}
843	! \item[clock]
844	! The object instance to get the number of {\tt ESMF\_Alarm}s from
845	! \item[NumAlarms]
846	! The number of {\tt ESMF\_Alarm}s in the {\tt ESMF\_Clock}'s
847	! {\tt ESMF\_Alarm} list
848	! \item[{[rc]}]
849	! Return code; equals {\tt ESMF\_SUCCESS} if there are no errors.
850	! \end{description}
851	!
852	! !REQUIREMENTS:
853	! TMG4.3
854	!EOP
855
856	NumAlarms = clock%clockint%NumAlarms
857	IF ( PRESENT(rc) ) rc = ESMF_SUCCESS
858
859	end subroutine ESMF_ClockGetNumAlarms
860
861	!------------------------------------------------------------------------------
862	!BOP
863	! !IROUTINE: ESMF_ClockSyncToWallClock - Set clock's current time to wall clock time
864
865	! !INTERFACE:
866	subroutine ESMF_ClockSyncToWallClock(clock, rc)
867
868	! !ARGUMENTS:
869	type(ESMF_Clock), intent(inout) :: clock
870	integer, intent(out), optional :: rc
871
872	! !DESCRIPTION:
873	! Set an {\tt ESMF\_Clock}'s current time to wall clock time
874	!
875	! The arguments are:
876	! \begin{description}
877	! \item[clock]
878	! The object instance to synchronize to wall clock time
879	! \item[{[rc]}]
880	! Return code; equals {\tt ESMF\_SUCCESS} if there are no errors.
881	! \end{description}
882	!
883	! !REQUIREMENTS:
884	! TMG3.4.5
885	!EOP
886	CALL wrf_error_fatal( 'ESMF_ClockSyncToWallClock not supported' )
887	end subroutine ESMF_ClockSyncToWallClock
888
889	!------------------------------------------------------------------------------
890	!BOP
891	! !IROUTINE: ESMF_ClockAdvance - Advance a clock's current time by one time step
892
893	! !INTERFACE:
894	subroutine ESMF_ClockAdvance(clock, RingingAlarmList, &
895	NumRingingAlarms, rc)
896
897	use esmf_timemod
898
899	! !ARGUMENTS:
900	type(ESMF_Clock), intent(inout) :: clock
901	type(ESMF_Alarm), dimension(MAX_ALARMS), intent(out), optional :: &
902	RingingAlarmList
903	integer, intent(out), optional :: NumRingingAlarms
904	integer, intent(out), optional :: rc
905	! Local
906	logical pred1, pred2, pred3
907	integer i, n
908	type(ESMF_Alarm) :: alarm
909	logical :: positive_timestep
910	!
911	! !DESCRIPTION:
912	! Advance an {\tt ESMF\_Clock}'s current time by one time step
913	!
914	! The arguments are:
915	! \begin{description}
916	! \item[clock]
917	! The object instance to advance
918	! \item[{[RingingAlarmList]}]
919	! Return a list of any ringing alarms after the time step
920	! \item[{[NumRingingAlarms]}]
921	! The number of ringing alarms returned
922	! \item[{[rc]}]
923	! Return code; equals {\tt ESMF\_SUCCESS} if there are no errors.
924	! \end{description}
925	!
926	! !REQUIREMENTS:
927	! TMG3.4.1
928	!EOP
929	! hack for bug in PGI 5.1-x
930	! clock%clockint%CurrTime = clock%clockint%CurrTime + &
931	! clock%clockint%TimeStep
932	clock%clockint%CurrTime = ESMF_TimeInc( clock%clockint%CurrTime, &
933	clock%clockint%TimeStep )
934	positive_timestep = ESMF_TimeIntervalIsPositive( clock%clockint%TimeStep )
935
936	IF ( Present(NumRingingAlarms) ) NumRingingAlarms = 0
937	clock%clockint%AdvanceCount = clock%clockint%AdvanceCount + 1
938	DO i = 1, MAX_ALARMS
939	alarm = clock%clockint%AlarmList(i)
940	! TBH: This is really dangerous. We need to be able to NULLIFY
941	! TBH: alarmint at compile-time (F95 synax) to make this safe.
942	!$$$TBH: see if F95 compile-time pointer-nullification is supported by all
943	!$$$TBH: compilers we support
944	IF ( ASSOCIATED( alarm%alarmint ) ) THEN
945	IF ( alarm%alarmint%Enabled ) THEN
946	IF ( alarm%alarmint%RingIntervalSet ) THEN
947	pred1 = .FALSE. ; pred2 = .FALSE. ; pred3 = .FALSE.
948	! alarm cannot ring if clock has passed the alarms stop time
949	IF ( alarm%alarmint%StopTimeSet ) THEN
950	IF ( positive_timestep ) THEN
951	! hack for bug in PGI 5.1-x
952	! PRED1 = clock%clockint%CurrTime > alarm%alarmint%StopTime
953	PRED1 = ESMF_TimeGT( clock%clockint%CurrTime, &
954	alarm%alarmint%StopTime )
955	ELSE
956	! in this case time step is negative and stop time is
957	! less than start time
958	! PRED1 = clock%clockint%CurrTime < alarm%alarmint%StopTime
959	PRED1 = ESMF_TimeLT( clock%clockint%CurrTime, &
960	alarm%alarmint%StopTime )
961	ENDIF
962	ENDIF
963	! one-shot alarm: check for ring time
964	! TBH: Need to remove duplicated code. Need to enforce only one of
965	! TBH: alarm%alarmint%RingTimeSet or alarm%alarmint%RingIntervalSet ever
966	! TBH: being .TRUE. and simplify the logic. Also, the simpler
967	! TBH: implementation in the duplicated code below should be sufficient.
968	IF ( alarm%alarmint%RingTimeSet ) THEN
969	IF ( positive_timestep ) THEN
970	! hack for bug in PGI 5.1-x
971	! PRED2 = ( alarm%alarmint%RingTime <= clock%clockint%CurrTime &
972	! .AND. clock%clockint%CurrTime < alarm%alarmint%RingTime + &
973	! clock%clockint%TimeStep )
974	PRED2 = ( ESMF_TimeLE( alarm%alarmint%RingTime, &
975	clock%clockint%CurrTime ) &
976	.AND. ESMF_TimeLT( clock%clockint%CurrTime, &
977	ESMF_TimeInc( alarm%alarmint%RingTime, &
978	clock%clockint%TimeStep ) ) )
979	ELSE
980	! in this case time step is negative and stop time is
981	! less than start time
982	! hack for bug in PGI 5.1-x
983	! PRED2 = ( alarm%alarmint%RingTime >= clock%clockint%CurrTime &
984	! .AND. clock%clockint%CurrTime > alarm%alarmint%RingTime + &
985	! clock%clockint%TimeStep )
986	PRED2 = ( ESMF_TimeGE( alarm%alarmint%RingTime, &
987	clock%clockint%CurrTime ) &
988	.AND. ESMF_TimeGT( clock%clockint%CurrTime, &
989	ESMF_TimeInc( alarm%alarmint%RingTime, &
990	clock%clockint%TimeStep ) ) )
991	ENDIF
992	ENDIF
993	! repeating alarm: check for ring interval
994	IF ( alarm%alarmint%RingIntervalSet ) THEN
995	IF ( positive_timestep ) THEN
996	! hack for bug in PGI 5.1-x
997	! PRED3 = ( alarm%alarmint%PrevRingTime + alarm%alarmint%RingInterval <= &
998	! clock%clockint%CurrTime )
999
1000	PRED3 = ( ESMF_TimeLE( ESMF_TimeInc( &
1001	alarm%alarmint%PrevRingTime, &
1002	alarm%alarmint%RingInterval ), &
1003	clock%clockint%CurrTime ) )
1004	ELSE
1005	! in this case time step is negative and stop time is
1006	! less than start time
1007	! ring interval must always be positive
1008	! hack for bug in PGI 5.1-x
1009	! PRED3 = ( alarm%alarmint%PrevRingTime - alarm%alarmint%RingInterval >= &
1010	! clock%clockint%CurrTime )
1011
1012	PRED3 = ( ESMF_TimeGE( ESMF_TimeDec( &
1013	alarm%alarmint%PrevRingTime, &
1014	alarm%alarmint%RingInterval ), &
1015	clock%clockint%CurrTime ) )
1016	ENDIF
1017	ENDIF
1018	IF ( ( .NOT. ( pred1 ) ) .AND. &
1019	( ( pred2 ) .OR. ( pred3 ) ) ) THEN
1020	alarm%alarmint%Ringing = .TRUE.
1021	IF ( positive_timestep ) THEN
1022	! hack for bug in PGI 5.1-x
1023	! IF ( PRED3) alarm%alarmint%PrevRingTime = alarm%alarmint%PrevRingTime + &
1024	! alarm%alarmint%RingInterval
1025	IF ( PRED3 ) &
1026	alarm%alarmint%PrevRingTime = &
1027	ESMF_TimeInc( alarm%alarmint%PrevRingTime, &
1028	alarm%alarmint%RingInterval )
1029	ELSE
1030	! in this case time step is negative and stop time is
1031	! less than start time
1032	! ring interval must always be positive
1033	! hack for bug in PGI 5.1-x
1034	! IF ( PRED3) alarm%alarmint%PrevRingTime = alarm%alarmint%PrevRingTime - &
1035	! alarm%alarmint%RingInterval
1036	IF ( PRED3 ) &
1037	alarm%alarmint%PrevRingTime = &
1038	ESMF_TimeDec( alarm%alarmint%PrevRingTime, &
1039	alarm%alarmint%RingInterval )
1040	ENDIF
1041	IF ( PRESENT( RingingAlarmList ) .AND. &
1042	PRESENT ( NumRingingAlarms ) ) THEN
1043	NumRingingAlarms = NumRingingAlarms + 1
1044	RingingAlarmList( NumRingingAlarms ) = alarm
1045	ENDIF
1046	ENDIF
1047	ELSE IF ( alarm%alarmint%RingTimeSet ) THEN
1048	! TBH: Need to remove duplicated code. Need to enforce only one of
1049	! TBH: alarm%alarmint%RingTimeSet or alarm%alarmint%RingIntervalSet ever
1050	! TBH: being .TRUE. and simplify the logic. Also, the simpler
1051	! TBH: implementation in here should be sufficient.
1052	IF ( positive_timestep ) THEN
1053	! hack for bug in PGI 5.1-x
1054	! IF ( alarm%alarmint%RingTime <= clock%clockint%CurrTime ) THEN
1055	IF ( ESMF_TimeLE( alarm%alarmint%RingTime, &
1056	clock%clockint%CurrTime ) ) THEN
1057	alarm%alarmint%Ringing = .TRUE.
1058	IF ( PRESENT( RingingAlarmList ) .AND. &
1059	PRESENT ( NumRingingAlarms ) ) THEN
1060	NumRingingAlarms = NumRingingAlarms + 1
1061	RingingAlarmList( NumRingingAlarms ) = alarm
1062	ENDIF
1063	ENDIF
1064	ELSE
1065	! in this case time step is negative and stop time is
1066	! less than start time
1067	! hack for bug in PGI 5.1-x
1068	! IF ( alarm%alarmint%RingTime >= clock%clockint%CurrTime ) THEN
1069	IF ( ESMF_TimeGE( alarm%alarmint%RingTime, &
1070	clock%clockint%CurrTime ) ) THEN
1071	alarm%alarmint%Ringing = .TRUE.
1072	IF ( PRESENT( RingingAlarmList ) .AND. &
1073	PRESENT ( NumRingingAlarms ) ) THEN
1074	NumRingingAlarms = NumRingingAlarms + 1
1075	RingingAlarmList( NumRingingAlarms ) = alarm
1076	ENDIF
1077	ENDIF
1078	ENDIF
1079	ENDIF
1080	IF ( alarm%alarmint%StopTimeSet ) THEN
1081	! TBH: what is this for???
1082	ENDIF
1083	ENDIF
1084	ENDIF
1085	clock%clockint%AlarmList(i) = alarm
1086	ENDDO
1087	IF ( PRESENT( rc ) ) rc = ESMF_SUCCESS
1088
1089	end subroutine ESMF_ClockAdvance
1090
1091	!------------------------------------------------------------------------------
1092	!BOP
1093	! !IROUTINE: ESMF_ClockStopTimeDisable - NOOP for compatibility with ESMF 2.1.0+
1094
1095	! !INTERFACE:
1096	subroutine ESMF_ClockStopTimeDisable(clock, rc)
1097	!
1098	! !ARGUMENTS:
1099	type(ESMF_Clock), intent(in) :: clock
1100	integer, intent(out), optional :: rc
1101
1102	rc = ESMF_SUCCESS
1103
1104	end subroutine ESMF_ClockStopTimeDisable
1105
1106	!------------------------------------------------------------------------------
1107	!BOP
1108	! !IROUTINE: ESMF_ClockIsStopTime - Has the clock reached its stop time ?
1109
1110	! !INTERFACE:
1111	function ESMF_ClockIsStopTime(clock, rc)
1112	!
1113	! !RETURN VALUE:
1114	logical :: ESMF_ClockIsStopTime
1115
1116	! !ARGUMENTS:
1117	type(ESMF_Clock), intent(in) :: clock
1118	integer, intent(out), optional :: rc
1119	logical :: positive_timestep
1120
1121	! !DESCRIPTION:
1122	! Return true if {\tt ESMF\_Clock} has reached its stop time, false
1123	! otherwise
1124	!
1125	! The arguments are:
1126	! \begin{description}
1127	! \item[clock]
1128	! The object instance to check
1129	! \item[{[rc]}]
1130	! Return code; equals {\tt ESMF\_SUCCESS} if there are no errors.
1131	! \end{description}
1132
1133	! !REQUIREMENTS:
1134	! TMG3.5.6
1135	!EOP
1136
1137	positive_timestep = ESMF_TimeIntervalIsPositive( clock%clockint%TimeStep )
1138	IF ( positive_timestep ) THEN
1139	! hack for bug in PGI 5.1-x
1140	! if ( clock%clockint%CurrTime .GE. clock%clockint%StopTime ) THEN
1141	if ( ESMF_TimeGE( clock%clockint%CurrTime, &
1142	clock%clockint%StopTime ) ) THEN
1143	ESMF_ClockIsStopTime = .TRUE.
1144	else
1145	ESMF_ClockIsStopTime = .FALSE.
1146	endif
1147	ELSE
1148	! hack for bug in PGI 5.1-x
1149	! if ( clock%clockint%CurrTime .LE. clock%clockint%StopTime ) THEN
1150	if ( ESMF_TimeLE( clock%clockint%CurrTime, &
1151	clock%clockint%StopTime ) ) THEN
1152	ESMF_ClockIsStopTime = .TRUE.
1153	else
1154	ESMF_ClockIsStopTime = .FALSE.
1155	endif
1156	ENDIF
1157	IF ( PRESENT( rc ) ) rc = ESMF_SUCCESS
1158
1159	end function ESMF_ClockIsStopTime
1160
1161	!------------------------------------------------------------------------------
1162	!
1163	! This section defines the overridden Read, Write, Validate and Print methods
1164	! from the ESMF_Base class
1165	!
1166	!------------------------------------------------------------------------------
1167	!BOP
1168	! !IROUTINE: ESMF_ClockRead - Restores a clock
1169
1170	! !INTERFACE:
1171	subroutine ESMF_ClockRead(clock, TimeStep, StartTime, StopTime, &
1172	RefTime, CurrTime, PrevTime, AdvanceCount, &
1173	AlarmList, rc)
1174
1175	! !ARGUMENTS:
1176	type(ESMF_Clock), intent(out) :: clock
1177	type(ESMF_TimeInterval), intent(in) :: TimeStep
1178	type(ESMF_Time), intent(in) :: StartTime
1179	type(ESMF_Time), intent(in) :: StopTime
1180	type(ESMF_Time), intent(in) :: RefTime
1181	type(ESMF_Time), intent(in) :: CurrTime
1182	type(ESMF_Time), intent(in) :: PrevTime
1183	integer(ESMF_KIND_I8), intent(in) :: AdvanceCount
1184	type(ESMF_Alarm), dimension(MAX_ALARMS), intent(in) :: AlarmList
1185	integer, intent(out), optional :: rc
1186
1187	! !DESCRIPTION:
1188	! Restore an {\tt ESMF\_Clock}
1189	!
1190	! The arguments are:
1191	! \begin{description}
1192	! \item[clock]
1193	! The object instance to restore
1194	! \item[TimeStep]
1195	! The {\tt ESMF\_Clock}'s time step interval
1196	! \item[StartTime]
1197	! The {\tt ESMF\_Clock}'s starting time
1198	! \item[StopTime]
1199	! The {\tt ESMF\_Clock}'s stopping time
1200	! \item[RefTime]
1201	! The {\tt ESMF\_Clock}'s reference time
1202	! \item[CurrTime]
1203	! The {\tt ESMF\_Clock}'s current time
1204	! \item[PrevTime]
1205	! The {\tt ESMF\_Clock}'s previous time
1206	! \item[AdvanceCount]
1207	! The number of times the {\tt ESMF\_Clock} has been advanced
1208	! \item[AlarmList]
1209	! The {\tt ESMF\_Clock}'s {\tt ESMF\_Alarm} list
1210	! \item[{[rc]}]
1211	! Return code; equals {\tt ESMF\_SUCCESS} if there are no errors.
1212	! \end{description}
1213	!
1214	! !REQUIREMENTS:
1215	!EOP
1216	CALL wrf_error_fatal( 'ESMF_ClockRead not supported' )
1217	end subroutine ESMF_ClockRead
1218
1219	!------------------------------------------------------------------------------
1220	!BOP
1221	! !IROUTINE: ESMF_ClockWrite - Saves a clock
1222
1223	! !INTERFACE:
1224	subroutine ESMF_ClockWrite(clock, TimeStep, StartTime, StopTime, &
1225	RefTime, CurrTime, PrevTime, AdvanceCount, &
1226	AlarmList, rc)
1227
1228	! !ARGUMENTS:
1229	type(ESMF_Clock), intent(in) :: clock
1230	type(ESMF_TimeInterval), intent(out) :: TimeStep
1231	type(ESMF_Time), intent(out) :: StartTime
1232	type(ESMF_Time), intent(out) :: StopTime
1233	type(ESMF_Time), intent(out) :: RefTime
1234	type(ESMF_Time), intent(out) :: CurrTime
1235	type(ESMF_Time), intent(out) :: PrevTime
1236	integer(ESMF_KIND_I8), intent(out) :: AdvanceCount
1237	type(ESMF_Alarm), dimension(MAX_ALARMS), intent(out) :: AlarmList
1238	integer, intent(out), optional :: rc
1239
1240	! !DESCRIPTION:
1241	! Save an {\tt ESMF\_Clock}
1242	!
1243	! The arguments are:
1244	! \begin{description}
1245	! \item[clock]
1246	! The object instance to save
1247	! \item[TimeStep]
1248	! The {\tt ESMF\_Clock}'s time step interval
1249	! \item[StartTime]
1250	! The {\tt ESMF\_Clock}'s starting time
1251	! \item[StopTime]
1252	! The {\tt ESMF\_Clock}'s stopping time
1253	! \item[RefTime]
1254	! The {\tt ESMF\_Clock}'s reference time
1255	! \item[CurrTime]
1256	! The {\tt ESMF\_Clock}'s current time
1257	! \item[PrevTime]
1258	! The {\tt ESMF\_Clock}'s previous time
1259	! \item[AdvanceCount]
1260	! The number of times the {\tt ESMF\_Clock} has been advanced
1261	! \item[AlarmList]
1262	! The {\tt ESMF\_Clock}'s {\tt ESMF\_Alarm} list
1263	! \item[{[rc]}]
1264	! Return code; equals {\tt ESMF\_SUCCESS} if there are no errors.
1265	! \end{description}
1266	!
1267	! !REQUIREMENTS:
1268	!EOP
1269	CALL wrf_error_fatal( 'ESMF_ClockWrite not supported' )
1270	end subroutine ESMF_ClockWrite
1271
1272	!------------------------------------------------------------------------------
1273	!BOP
1274	! !IROUTINE: ESMF_ClockValidate - Validate a Clock's properties
1275
1276	! !INTERFACE:
1277	subroutine ESMF_ClockValidate(clock, opts, rc)
1278
1279	! !ARGUMENTS:
1280	type(ESMF_Clock), intent(in) :: clock
1281	character (len=*), intent(in), optional :: opts
1282	integer, intent(out), optional :: rc
1283
1284	! !DESCRIPTION:
1285	! Perform a validation check on an {\tt ESMF\_Clock}'s properties
1286	!
1287	! The arguments are:
1288	! \begin{description}
1289	! \item[clock]
1290	! {\tt ESMF\_Clock} to validate
1291	! \item[{[opts]}]
1292	! Validate options
1293	! \item[{[rc]}]
1294	! Return code; equals {\tt ESMF\_SUCCESS} if there are no errors.
1295	! \end{description}
1296	!
1297	! !REQUIREMENTS:
1298	! TMGn.n.n
1299	!EOP
1300	CALL wrf_error_fatal( 'ESMF_ClockValidate not supported' )
1301	end subroutine ESMF_ClockValidate
1302
1303	!------------------------------------------------------------------------------
1304	!BOP
1305	! !IROUTINE: ESMF_ClockPrint - Print out a Clock's properties
1306
1307	! !INTERFACE:
1308	subroutine ESMF_ClockPrint(clock, opts, rc)
1309
1310	! !ARGUMENTS:
1311	type(ESMF_Clock), intent(in) :: clock
1312	character (len=*), intent(in), optional :: opts
1313	integer, intent(out), optional :: rc
1314
1315	! !DESCRIPTION:
1316	! To support testing/debugging, print out an {\tt ESMF\_Clock}'s
1317	! properties.
1318	!
1319	! The arguments are:
1320	! \begin{description}
1321	! \item[clock]
1322	! {\tt ESMF\_Clock} to print out
1323	! \item[{[opts]}]
1324	! Print options
1325	! \item[{[rc]}]
1326	! Return code; equals {\tt ESMF\_SUCCESS} if there are no errors.
1327	! \end{description}
1328	!
1329	! !REQUIREMENTS:
1330	! TMGn.n.n
1331	!EOP
1332	CALL wrf_error_fatal( 'ESMF_ClockPrint not supported' )
1333	end subroutine ESMF_ClockPrint
1334
1335	!------------------------------------------------------------------------------
1336
1337	end module ESMF_ClockMod

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