1 /* This file is part of the Linux Trace Toolkit viewer
2 * Copyright (C) 2003-2004 Michel Dagenais
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License Version 2 as
6 * published by the Free Software Foundation;
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
13 * You should have received a copy of the GNU General Public License
14 * along with this program; if not, write to the Free Software
15 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
19 /* This module inserts a hook in the program main loop. This hook processes
20 all the events in the main tracefile while testing the speed and
21 functionality of the state and stats computations. */
24 #include <lttv/lttv.h>
25 #include <lttv/attribute.h>
26 #include <lttv/hook.h>
27 #include <lttv/option.h>
28 #include <lttv/module.h>
29 #include <lttv/tracecontext.h>
30 #include <lttv/state.h>
31 #include <lttv/stats.h>
32 #include <ltt/trace.h>
33 #include <ltt/event.h>
36 static LttvTraceset
*traceset
;
52 static char *a_dump_tracefiles
;
54 static char *a_save_sample
;
74 LttEventPosition
*a_event_position
;
76 typedef struct _save_state
{
87 static void lttv_trace_option(void *hook_data
)
91 trace
= ltt_trace_open(a_trace
);
92 if(trace
== NULL
) g_critical("cannot open trace %s", a_trace
);
93 lttv_traceset_add(traceset
, lttv_trace_new(trace
));
96 static double get_time()
100 g_get_current_time(>
);
101 return gt
.tv_sec
+ (double)gt
.tv_usec
/ (double)1000000.0;
104 static double run_one_test(LttvTracesetState
*ts
, LttTime start
, LttTime end
)
110 //lttv_traceset_context_add_hooks(&ts->parent,
111 //before_traceset, after_traceset, NULL, before_trace, after_trace,
112 //NULL, before_tracefile, after_tracefile, NULL, before_event, after_event);
113 lttv_process_traceset_begin(&ts
->parent
,
120 for(i
= 0 ; i
< lttv_traceset_number(traceset
) ; i
++) {
121 ((LttvTraceState
*)(ts
->parent
.traces
[i
]))->save_interval
=a_save_interval
;
125 lttv_state_traceset_seek_time_closest(ts
, start
);
126 //lttv_process_traceset(&ts->parent, end, G_MAXULONG);
127 lttv_process_traceset_middle(&ts
->parent
,
133 //lttv_traceset_context_remove_hooks(&ts->parent,
134 //before_traceset, after_traceset, NULL, before_trace, after_trace,
135 //NULL, before_tracefile, after_tracefile, NULL, before_event, after_event);
136 lttv_process_traceset_end(&ts
->parent
,
147 gboolean
trace_event(void *hook_data
, void *call_data
)
149 LttvTracefileState
*tfs
= (LttvTracefileState
*)call_data
;
151 guint nb_block
, nb_event
;
155 ltt_event_position(tfs
->parent
.e
, a_event_position
);
156 ltt_event_position_get(a_event_position
, &nb_block
, &nb_event
, &tf
);
157 fprintf(stderr
,"Event %s %lu.%09lu [%lu %lu]\n",
158 ltt_eventtype_name(ltt_event_eventtype(tfs
->parent
.e
)),
159 tfs
->parent
.timestamp
.tv_sec
, tfs
->parent
.timestamp
.tv_nsec
,
165 gboolean
count_event(void *hook_data
, void *call_data
)
167 guint
*pcount
= (guint
*)hook_data
;
174 gboolean
save_state_copy_event(void *hook_data
, void *call_data
)
176 SaveState
*save_state
= (SaveState
*)hook_data
;
178 LttvTracefileState
*tfs
= (LttvTracefileState
*)call_data
;
180 LttvTraceState
*ts
= (LttvTraceState
*)tfs
->parent
.t_context
;
186 if(ts
->nb_event
== 0 && strcmp(ltt_eventtype_name(
187 ltt_event_eventtype(tfs
->parent
.e
)), "block_start") == 0) {
188 if(a_save_sample
!= NULL
) {
189 filename
= g_string_new("");
190 g_string_printf(filename
, "%s.copy.%lu.%09lu.xml", a_save_sample
,
191 tfs
->parent
.timestamp
.tv_sec
, tfs
->parent
.timestamp
.tv_nsec
);
192 fp
= fopen(filename
->str
, "w");
193 if(fp
== NULL
) g_error("Cannot open %s", filename
->str
);
194 g_string_free(filename
, TRUE
);
195 lttv_state_write(ts
, tfs
->parent
.timestamp
, fp
);
197 } //else lttv_state_write(ts, tfs->parent.timestamp, save_state->fp);
203 gboolean
save_state_event(void *hook_data
, void *call_data
)
205 SaveState
*save_state
= (SaveState
*)hook_data
;
207 LttvTracefileState
*tfs
= (LttvTracefileState
*)call_data
;
209 LttvTraceState
*ts
= (LttvTraceState
*)tfs
->parent
.t_context
;
215 (save_state
->count
)++;
216 if(save_state
->count
% save_state
->interval
== 0 &&
217 save_state
->position
< save_state
->size
) {
218 if(a_save_sample
!= NULL
) {
219 filename
= g_string_new("");
220 g_string_printf(filename
, "%s.%u.xml.%u", a_save_sample
,
221 save_state
->position
, save_state
->version
);
222 fp
= fopen(filename
->str
, "w");
223 if(fp
== NULL
) g_error("Cannot open %s", filename
->str
);
224 g_string_free(filename
, TRUE
);
225 lttv_state_write(ts
, tfs
->parent
.timestamp
, fp
);
227 } //else lttv_state_write(ts, tfs->parent.timestamp, save_state->fp);
229 save_state
->write_time
[save_state
->position
] = tfs
->parent
.timestamp
;
230 save_state
->position
++;
236 static gboolean
process_traceset(void *hook_data
, void *call_data
)
238 LttvTracesetStats
*tscs
;
240 LttvTracesetState
*ts
;
242 LttvTracesetContext
*tc
;
250 guint i
, j
, count
, nb_control
, nb_tracefile
, nb_block
, nb_event
, nb_equal
;
254 LttTracefile
*tracefile
, *tf
;
258 LttFacility
*facility
;
262 LttEventType
*event_type
;
264 LttTime time
, previous_time
;
266 long long unsigned cycle_count
, start_count
, delta_cycle
;
268 long long unsigned start_nsec
, end_nsec
, delta_nsec
, added_nsec
, added_nsec2
;
270 double cycle_per_nsec
, nsec_per_cycle
;
272 long long interpolated_nsec
, interpolated_nsec2
, end_nsec_sec
, end_nsec_nsec
;
276 LttTime zero_time
= ltt_time_zero
;
278 LttTime max_time
= { G_MAXULONG
, G_MAXULONG
};
280 a_event_position
= ltt_event_position_new();
282 if(a_dump_tracefiles
!= NULL
) {
283 for(i
= 0 ; i
< lttv_traceset_number(traceset
) ; i
++) {
284 trace
= lttv_trace(lttv_traceset_get(traceset
, i
));
285 nb_control
= ltt_trace_control_tracefile_number(trace
);
286 nb_tracefile
= nb_control
+ ltt_trace_per_cpu_tracefile_number(trace
);
287 for(j
= 0 ; j
< nb_tracefile
; j
++) {
289 tracefile
= ltt_trace_control_tracefile_get(trace
,j
);
292 tracefile
= ltt_trace_per_cpu_tracefile_get(trace
,j
- nb_control
);
295 filename
= g_string_new("");
296 g_string_printf(filename
, "%s.%u.%u.trace", a_dump_tracefiles
, i
, j
);
297 fp
= fopen(filename
->str
, "w");
298 if(fp
== NULL
) g_error("Cannot open %s", filename
->str
);
299 g_string_free(filename
, TRUE
);
300 ltt_tracefile_seek_time(tracefile
, zero_time
);
301 previous_time
= zero_time
;
303 while((event
= ltt_tracefile_read(tracefile
)) != NULL
) {
304 facility
= ltt_event_facility(event
);
305 event_type
= ltt_event_eventtype(event
);
306 time
= ltt_event_time(event
);
307 cycle_count
= ltt_event_cycle_count(event
);
308 ltt_event_position(event
, a_event_position
);
309 ltt_event_position_get(a_event_position
, &nb_block
, &nb_event
, &tf
);
310 fprintf(fp
,"%s.%s: %llu %lu.%09lu position %u/%u\n",
311 ltt_facility_name(facility
), ltt_eventtype_name(event_type
),
312 cycle_count
, (unsigned long)time
.tv_sec
,
313 (unsigned long)time
.tv_nsec
,
316 if(ltt_time_compare(time
, previous_time
) < 0) {
317 g_warning("Time decreasing trace %d tracefile %d position %u/%u",
318 i
, j
, nb_block
, nb_event
);
321 if(strcmp(ltt_eventtype_name(event_type
),"block_start") == 0) {
322 start_count
= cycle_count
;
325 else if(strcmp(ltt_eventtype_name(event_type
),"block_end") == 0) {
326 delta_cycle
= cycle_count
- start_count
;
327 end_nsec_sec
= (long long unsigned)time
.tv_sec
* (long long unsigned)1000000000;
328 end_nsec_nsec
= time
.tv_nsec
;
329 end_nsec
= end_nsec_sec
+ end_nsec_nsec
;
330 start_nsec
= (long long unsigned)start_time
.tv_sec
* (long long unsigned)1000000000 + (long long unsigned)start_time
.tv_nsec
;
331 delta_nsec
= end_nsec
- start_nsec
;
332 cycle_per_nsec
= (double)delta_cycle
/ (double)delta_nsec
;
333 nsec_per_cycle
= (double)delta_nsec
/ (double)delta_cycle
;
334 added_nsec
= (double)delta_cycle
* nsec_per_cycle
;
335 interpolated_nsec
= start_nsec
+ added_nsec
;
336 added_nsec2
= (double)delta_cycle
/ cycle_per_nsec
;
337 interpolated_nsec2
= start_nsec
+ added_nsec2
;
339 fprintf(fp
,"Time: start_count %llu, end_count %llu, delta_cycle %llu, start_nsec %llu, end_nsec_sec %llu, end_nsec_nsec %llu, end_nsec %llu, delta_nsec %llu, cycle_per_nsec %.25f, nsec_per_cycle %.25f, added_nsec %llu, added_nsec2 %llu, interpolated_nsec %llu, interpolated_nsec2 %llu\n", start_count
, cycle_count
, delta_cycle
, start_nsec
, end_nsec_sec
, end_nsec_nsec
, end_nsec
, delta_nsec
, cycle_per_nsec
, nsec_per_cycle
, added_nsec
, added_nsec2
, interpolated_nsec
, interpolated_nsec2
);
342 if(ltt_time_compare(time
, previous_time
) == 0) nb_equal
++;
343 else if(nb_equal
> 0) {
344 g_warning("Consecutive %d events with time %lu.%09lu",
345 nb_equal
+ 1, previous_time
.tv_sec
, previous_time
.tv_nsec
);
348 previous_time
= time
;
356 tscs
= g_object_new(LTTV_TRACESET_STATS_TYPE
, NULL
);
358 tc
= &tscs
->parent
.parent
;
360 lttv_context_init(tc
, traceset
);
362 /* For each case compute and print the elapsed time.
363 The first case is simply to run through all events with a
366 if(a_test1
|| a_test_all
) {
368 lttv_hooks_add(event_hook
, count_event
, &count
, LTTV_PRIO_DEFAULT
);
369 t
= run_one_test(ts
, zero_time
, max_time
);
370 lttv_hooks_remove_data(event_hook
, count_event
, &count
);
372 "Processing trace while counting events (%u events in %g seconds)",
376 /* Run through all events computing the state. */
378 if(a_test2
|| a_test_all
) {
379 lttv_state_add_event_hooks(ts
);
380 t
= run_one_test(ts
, zero_time
, max_time
);
381 lttv_state_remove_event_hooks(ts
);
382 g_warning("Processing trace while updating state (%g seconds)", t
);
385 /* Run through all events computing the state and writing it out
388 SaveState save_state
;
390 save_state
.interval
= a_sample_interval
;
391 save_state
.size
= a_sample_number
;
392 save_state
.fp
= stderr
;
393 save_state
.write_time
= g_new(LttTime
, a_sample_number
);
396 if(a_test3
|| a_test_all
) {
397 for(i
= 0 ; i
< 2 ; i
++) {
398 save_state
.count
= 0;
399 save_state
.position
= 0;
400 save_state
.version
= i
;
401 lttv_state_add_event_hooks(ts
);
402 lttv_hooks_add(event_hook
, save_state_event
, &save_state
,
404 t
= run_one_test(ts
, zero_time
, max_time
);
405 lttv_state_remove_event_hooks(ts
);
406 lttv_hooks_remove_data(event_hook
, save_state_event
, &save_state
);
407 g_warning("Processing while updating/writing state (%g seconds)", t
);
411 /* Run through all events computing the stats. */
413 if(a_test4
|| a_test_all
) {
414 if(lttv_profile_memory
) {
415 g_message("Memory summary before computing stats");
419 lttv_stats_add_event_hooks(tscs
);
420 t
= run_one_test(ts
, zero_time
, max_time
);
421 lttv_stats_remove_event_hooks(tscs
);
422 g_warning("Processing trace while counting stats (%g seconds)", t
);
424 if(lttv_profile_memory
) {
425 g_message("Memory summary after computing stats");
429 lttv_stats_sum_traceset(tscs
);
431 if(lttv_profile_memory
) {
432 g_message("Memory summary after summing stats");
436 lttv_context_fini(tc
);
437 lttv_context_init(tc
, traceset
);
439 if(lttv_profile_memory
) {
440 g_message("Memory summary after cleaning up the stats");
445 /* Run through all events computing the state and stats. */
447 if(a_test5
|| a_test_all
) {
448 if(lttv_profile_memory
) {
449 g_message("Memory summary before computing state and stats");
453 lttv_state_add_event_hooks(ts
);
454 lttv_stats_add_event_hooks(tscs
);
455 t
= run_one_test(ts
, zero_time
, max_time
);
456 lttv_state_remove_event_hooks(ts
);
457 lttv_stats_remove_event_hooks(tscs
);
459 "Processing trace while counting state and stats (%g seconds)", t
);
461 if(lttv_profile_memory
) {
462 g_message("Memory summary after computing and state and stats");
466 lttv_context_fini(tc
);
467 lttv_context_init(tc
, traceset
);
469 if(lttv_profile_memory
) {
470 g_message("Memory summary after cleaning up the stats");
475 /* Run through all events computing and saving the state. */
477 if(a_trace_event
) lttv_hooks_add(event_hook
, trace_event
, NULL
,
480 if(a_test6
|| a_test_all
) {
481 if(lttv_profile_memory
) {
482 g_message("Memory summary before computing and saving state");
486 lttv_state_add_event_hooks(ts
);
487 lttv_state_save_add_event_hooks(ts
);
488 if(a_save_state_copy
)
489 lttv_hooks_add(event_hook
, save_state_copy_event
, &save_state
,
491 t
= run_one_test(ts
, zero_time
, max_time
);
492 lttv_state_remove_event_hooks(ts
);
493 lttv_state_save_remove_event_hooks(ts
);
494 if(a_save_state_copy
)
495 lttv_hooks_remove_data(event_hook
,save_state_copy_event
, &save_state
);
497 g_warning("Processing trace while updating/saving state (%g seconds)", t
);
499 if(lttv_profile_memory
) {
500 g_message("Memory summary after computing/saving state");
505 /* Seek a few times to each saved position */
507 if((a_test7
&& a_test3
) || a_test_all
) {
510 for(i
= 0 ; i
< a_seek_number
; i
++) {
511 for(j
= save_state
.position
- 1 ; j
>= 0 ; j
--) {
512 lttv_state_add_event_hooks(ts
);
513 t
= run_one_test(ts
, save_state
.write_time
[j
],
514 save_state
.write_time
[j
]);
515 lttv_state_remove_event_hooks(ts
);
516 g_warning("Seeking to %lu.%lu (%g seconds)",
517 save_state
.write_time
[j
].tv_sec
, save_state
.write_time
[j
].tv_nsec
,
520 if(a_save_sample
!= NULL
) {
521 filename
= g_string_new("");
522 g_string_printf(filename
, "%s.%d.xml.bak%d", a_save_sample
, j
, i
);
523 fp
= fopen(filename
->str
, "w");
524 if(fp
== NULL
) g_error("Cannot open %s", filename
->str
);
525 g_string_free(filename
, TRUE
);
526 lttv_state_write((LttvTraceState
*)tc
->traces
[0],
527 save_state
.write_time
[j
], fp
);
530 //else lttv_state_write((LttvTraceState *)tc->traces[0],
531 // save_state.write_time[j], save_state.fp);
536 if(a_trace_event
) lttv_hooks_remove_data(event_hook
, trace_event
, NULL
);
538 g_free(save_state
.write_time
);
539 g_free(a_event_position
);
540 lttv_context_fini(tc
);
541 g_object_unref(tscs
);
543 if(lttv_profile_memory
) {
544 g_message("Memory summary at the end of batchtest");
548 g_info("BatchTest end process traceset");
554 LttvAttributeValue value
;
556 LttvIAttribute
*attributes
= LTTV_IATTRIBUTE(lttv_global_attributes());
558 g_info("Init batchtest.c");
560 lttv_option_add("trace", 't',
561 "add a trace to the trace set to analyse",
562 "pathname of the directory containing the trace",
563 LTTV_OPT_STRING
, &a_trace
, lttv_trace_option
, NULL
);
565 a_trace_event
= FALSE
;
567 a_dump_tracefiles
= NULL
;
568 lttv_option_add("dump-tracefiles", 'D',
569 "Write event by event the content of tracefiles",
570 "basename for the files where to dump events",
571 LTTV_OPT_STRING
, &a_dump_tracefiles
, NULL
, NULL
);
573 a_save_sample
= NULL
;
574 lttv_option_add("save-sample", 's',
575 "Save state samples to multiple files",
576 "basename for the files containing the state samples",
577 LTTV_OPT_STRING
, &a_save_sample
, NULL
, NULL
);
579 a_save_state_copy
= FALSE
;
580 lttv_option_add("save-state-copy", 'S', "Write the state saved for seeking",
581 "", LTTV_OPT_NONE
, &a_save_state_copy
, NULL
, NULL
);
583 a_save_interval
= 100000;
584 lttv_option_add("save-interval", 'i',
585 "Interval between saving state",
586 "number of events before a block start triggers saving state",
587 LTTV_OPT_INT
, &a_save_interval
, NULL
, NULL
);
589 a_sample_interval
= 100000;
590 lttv_option_add("sample-interval", 'S',
591 "Interval between sampling state",
592 "number of events before sampling and writing state",
593 LTTV_OPT_INT
, &a_sample_interval
, NULL
, NULL
);
595 a_sample_number
= 20;
596 lttv_option_add("sample-number", 'N',
597 "Number of state samples",
599 LTTV_OPT_INT
, &a_sample_number
, NULL
, NULL
);
602 lttv_option_add("seek-number", 'K',
605 LTTV_OPT_INT
, &a_seek_number
, NULL
, NULL
);
608 lttv_option_add("test1", '1', "Test just counting events", "",
609 LTTV_OPT_NONE
, &a_test1
, NULL
, NULL
);
612 lttv_option_add("test2", '2', "Test computing the state", "",
613 LTTV_OPT_NONE
, &a_test2
, NULL
, NULL
);
616 lttv_option_add("test3", '3', "Test computing the state, writing out a few",
617 "", LTTV_OPT_NONE
, &a_test3
, NULL
, NULL
);
620 lttv_option_add("test4", '4', "Test computing the stats", "",
621 LTTV_OPT_NONE
, &a_test4
, NULL
, NULL
);
624 lttv_option_add("test5", '5', "Test computing the state and stats", "",
625 LTTV_OPT_NONE
, &a_test5
, NULL
, NULL
);
628 lttv_option_add("test6", '6', "Test computing and saving the state", "",
629 LTTV_OPT_NONE
, &a_test6
, NULL
, NULL
);
632 lttv_option_add("test7", '7', "Test seeking to positions written out in 3",
633 "", LTTV_OPT_NONE
, &a_test7
, NULL
, NULL
);
636 lttv_option_add("testall", 'a', "Run all tests ", "",
637 LTTV_OPT_NONE
, &a_test_all
, NULL
, NULL
);
639 traceset
= lttv_traceset_new();
641 before_traceset
= lttv_hooks_new();
642 after_traceset
= lttv_hooks_new();
643 before_trace
= lttv_hooks_new();
644 after_trace
= lttv_hooks_new();
645 before_tracefile
= lttv_hooks_new();
646 after_tracefile
= lttv_hooks_new();
647 //before_event = lttv_hooks_new();
648 //after_event = lttv_hooks_new();
649 event_hook
= lttv_hooks_new();
652 g_assert(lttv_iattribute_find_by_path(attributes
, "hooks/traceset/before",
653 LTTV_POINTER
, &value
));
654 *(value
.v_pointer
) = before_traceset
;
655 g_assert(lttv_iattribute_find_by_path(attributes
, "hooks/traceset/after",
656 LTTV_POINTER
, &value
));
657 *(value
.v_pointer
) = after_traceset
;
658 g_assert(lttv_iattribute_find_by_path(attributes
, "hooks/trace/before",
659 LTTV_POINTER
, &value
));
660 *(value
.v_pointer
) = before_trace
;
661 g_assert(lttv_iattribute_find_by_path(attributes
, "hooks/trace/after",
662 LTTV_POINTER
, &value
));
663 *(value
.v_pointer
) = after_trace
;
664 g_assert(lttv_iattribute_find_by_path(attributes
, "hooks/tracefile/before",
665 LTTV_POINTER
, &value
));
666 *(value
.v_pointer
) = before_tracefile
;
667 g_assert(lttv_iattribute_find_by_path(attributes
, "hooks/tracefile/after",
668 LTTV_POINTER
, &value
));
669 *(value
.v_pointer
) = after_tracefile
;
670 //g_assert(lttv_iattribute_find_by_path(attributes, "hooks/event/before",
671 // LTTV_POINTER, &value));
672 //*(value.v_pointer) = before_event;
673 //g_assert(lttv_iattribute_find_by_path(attributes, "hooks/event/after",
674 // LTTV_POINTER, &value));
675 //*(value.v_pointer) = after_event;
676 g_assert(lttv_iattribute_find_by_path(attributes
, "hooks/event",
677 LTTV_POINTER
, &value
));
678 *(value
.v_pointer
) = event_hook
;
679 g_assert(lttv_iattribute_find_by_path(attributes
, "hooks/main/before",
680 LTTV_POINTER
, &value
));
681 g_assert((main_hooks
= *(value
.v_pointer
)) != NULL
);
682 lttv_hooks_add(main_hooks
, process_traceset
, NULL
, LTTV_PRIO_DEFAULT
);
686 static void destroy()
692 g_info("Destroy batchAnalysis.c");
694 lttv_option_remove("trace");
695 lttv_option_remove("dump-tracefiles");
696 lttv_option_remove("save-sample");
697 lttv_option_remove("save-state-copy");
698 lttv_option_remove("sample-interval");
699 lttv_option_remove("sample-number");
700 lttv_option_remove("seek-number");
701 lttv_option_remove("save-interval");
702 lttv_option_remove("test1");
703 lttv_option_remove("test2");
704 lttv_option_remove("test3");
705 lttv_option_remove("test4");
706 lttv_option_remove("test5");
707 lttv_option_remove("test6");
708 lttv_option_remove("test7");
709 lttv_option_remove("testall");
711 lttv_hooks_destroy(before_traceset
);
712 lttv_hooks_destroy(after_traceset
);
713 lttv_hooks_destroy(before_trace
);
714 lttv_hooks_destroy(after_trace
);
715 lttv_hooks_destroy(before_tracefile
);
716 lttv_hooks_destroy(after_tracefile
);
717 //lttv_hooks_destroy(before_event);
718 //lttv_hooks_destroy(after_event);
719 lttv_hooks_destroy(event_hook
);
720 lttv_hooks_remove_data(main_hooks
, process_traceset
, NULL
);
722 nb
= lttv_traceset_number(traceset
);
723 for(i
= 0 ; i
< nb
; i
++) {
724 trace
= lttv_traceset_get(traceset
, i
);
725 lttv_traceset_remove(traceset
,i
);
726 ltt_trace_close(lttv_trace(trace
));
727 lttv_trace_destroy(trace
);
730 lttv_traceset_destroy(traceset
);
734 LTTV_MODULE("batchtest", "Batch processing of a trace for tests", \
735 "Run through a trace calling all the registered hooks for tests", \
736 init
, destroy
, "state", "stats", "option" )
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