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Merge tag 'perf-core-for-mingo-2' of git://git.kernel.org/pub/scm/linux/kernel/git...
[mirror_ubuntu-artful-kernel.git] / tools / perf / ui / hist.c
1 #include <math.h>
2 #include <linux/compiler.h>
3
4 #include "../util/hist.h"
5 #include "../util/util.h"
6 #include "../util/sort.h"
7 #include "../util/evsel.h"
8
9 /* hist period print (hpp) functions */
10
11 #define hpp__call_print_fn(hpp, fn, fmt, ...) \
12 ({ \
13 int __ret = fn(hpp, fmt, ##__VA_ARGS__); \
14 advance_hpp(hpp, __ret); \
15 __ret; \
16 })
17
18 static int __hpp__fmt(struct perf_hpp *hpp, struct hist_entry *he,
19 hpp_field_fn get_field, const char *fmt, int len,
20 hpp_snprint_fn print_fn, bool fmt_percent)
21 {
22 int ret;
23 struct hists *hists = he->hists;
24 struct perf_evsel *evsel = hists_to_evsel(hists);
25 char *buf = hpp->buf;
26 size_t size = hpp->size;
27
28 if (fmt_percent) {
29 double percent = 0.0;
30 u64 total = hists__total_period(hists);
31
32 if (total)
33 percent = 100.0 * get_field(he) / total;
34
35 ret = hpp__call_print_fn(hpp, print_fn, fmt, len, percent);
36 } else
37 ret = hpp__call_print_fn(hpp, print_fn, fmt, len, get_field(he));
38
39 if (perf_evsel__is_group_event(evsel)) {
40 int prev_idx, idx_delta;
41 struct hist_entry *pair;
42 int nr_members = evsel->nr_members;
43
44 prev_idx = perf_evsel__group_idx(evsel);
45
46 list_for_each_entry(pair, &he->pairs.head, pairs.node) {
47 u64 period = get_field(pair);
48 u64 total = hists__total_period(pair->hists);
49
50 if (!total)
51 continue;
52
53 evsel = hists_to_evsel(pair->hists);
54 idx_delta = perf_evsel__group_idx(evsel) - prev_idx - 1;
55
56 while (idx_delta--) {
57 /*
58 * zero-fill group members in the middle which
59 * have no sample
60 */
61 if (fmt_percent) {
62 ret += hpp__call_print_fn(hpp, print_fn,
63 fmt, len, 0.0);
64 } else {
65 ret += hpp__call_print_fn(hpp, print_fn,
66 fmt, len, 0ULL);
67 }
68 }
69
70 if (fmt_percent) {
71 ret += hpp__call_print_fn(hpp, print_fn, fmt, len,
72 100.0 * period / total);
73 } else {
74 ret += hpp__call_print_fn(hpp, print_fn, fmt,
75 len, period);
76 }
77
78 prev_idx = perf_evsel__group_idx(evsel);
79 }
80
81 idx_delta = nr_members - prev_idx - 1;
82
83 while (idx_delta--) {
84 /*
85 * zero-fill group members at last which have no sample
86 */
87 if (fmt_percent) {
88 ret += hpp__call_print_fn(hpp, print_fn,
89 fmt, len, 0.0);
90 } else {
91 ret += hpp__call_print_fn(hpp, print_fn,
92 fmt, len, 0ULL);
93 }
94 }
95 }
96
97 /*
98 * Restore original buf and size as it's where caller expects
99 * the result will be saved.
100 */
101 hpp->buf = buf;
102 hpp->size = size;
103
104 return ret;
105 }
106
107 int hpp__fmt(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
108 struct hist_entry *he, hpp_field_fn get_field,
109 const char *fmtstr, hpp_snprint_fn print_fn, bool fmt_percent)
110 {
111 int len = fmt->user_len ?: fmt->len;
112
113 if (symbol_conf.field_sep) {
114 return __hpp__fmt(hpp, he, get_field, fmtstr, 1,
115 print_fn, fmt_percent);
116 }
117
118 if (fmt_percent)
119 len -= 2; /* 2 for a space and a % sign */
120 else
121 len -= 1;
122
123 return __hpp__fmt(hpp, he, get_field, fmtstr, len, print_fn, fmt_percent);
124 }
125
126 int hpp__fmt_acc(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
127 struct hist_entry *he, hpp_field_fn get_field,
128 const char *fmtstr, hpp_snprint_fn print_fn, bool fmt_percent)
129 {
130 if (!symbol_conf.cumulate_callchain) {
131 int len = fmt->user_len ?: fmt->len;
132 return snprintf(hpp->buf, hpp->size, " %*s", len - 1, "N/A");
133 }
134
135 return hpp__fmt(fmt, hpp, he, get_field, fmtstr, print_fn, fmt_percent);
136 }
137
138 static int field_cmp(u64 field_a, u64 field_b)
139 {
140 if (field_a > field_b)
141 return 1;
142 if (field_a < field_b)
143 return -1;
144 return 0;
145 }
146
147 static int __hpp__sort(struct hist_entry *a, struct hist_entry *b,
148 hpp_field_fn get_field)
149 {
150 s64 ret;
151 int i, nr_members;
152 struct perf_evsel *evsel;
153 struct hist_entry *pair;
154 u64 *fields_a, *fields_b;
155
156 ret = field_cmp(get_field(a), get_field(b));
157 if (ret || !symbol_conf.event_group)
158 return ret;
159
160 evsel = hists_to_evsel(a->hists);
161 if (!perf_evsel__is_group_event(evsel))
162 return ret;
163
164 nr_members = evsel->nr_members;
165 fields_a = calloc(nr_members, sizeof(*fields_a));
166 fields_b = calloc(nr_members, sizeof(*fields_b));
167
168 if (!fields_a || !fields_b)
169 goto out;
170
171 list_for_each_entry(pair, &a->pairs.head, pairs.node) {
172 evsel = hists_to_evsel(pair->hists);
173 fields_a[perf_evsel__group_idx(evsel)] = get_field(pair);
174 }
175
176 list_for_each_entry(pair, &b->pairs.head, pairs.node) {
177 evsel = hists_to_evsel(pair->hists);
178 fields_b[perf_evsel__group_idx(evsel)] = get_field(pair);
179 }
180
181 for (i = 1; i < nr_members; i++) {
182 ret = field_cmp(fields_a[i], fields_b[i]);
183 if (ret)
184 break;
185 }
186
187 out:
188 free(fields_a);
189 free(fields_b);
190
191 return ret;
192 }
193
194 static int __hpp__sort_acc(struct hist_entry *a, struct hist_entry *b,
195 hpp_field_fn get_field)
196 {
197 s64 ret = 0;
198
199 if (symbol_conf.cumulate_callchain) {
200 /*
201 * Put caller above callee when they have equal period.
202 */
203 ret = field_cmp(get_field(a), get_field(b));
204 if (ret)
205 return ret;
206
207 if (a->thread != b->thread || !symbol_conf.use_callchain)
208 return 0;
209
210 ret = b->callchain->max_depth - a->callchain->max_depth;
211 }
212 return ret;
213 }
214
215 static int hpp__width_fn(struct perf_hpp_fmt *fmt,
216 struct perf_hpp *hpp __maybe_unused,
217 struct perf_evsel *evsel)
218 {
219 int len = fmt->user_len ?: fmt->len;
220
221 if (symbol_conf.event_group)
222 len = max(len, evsel->nr_members * fmt->len);
223
224 if (len < (int)strlen(fmt->name))
225 len = strlen(fmt->name);
226
227 return len;
228 }
229
230 static int hpp__header_fn(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
231 struct perf_evsel *evsel)
232 {
233 int len = hpp__width_fn(fmt, hpp, evsel);
234 return scnprintf(hpp->buf, hpp->size, "%*s", len, fmt->name);
235 }
236
237 static int hpp_color_scnprintf(struct perf_hpp *hpp, const char *fmt, ...)
238 {
239 va_list args;
240 ssize_t ssize = hpp->size;
241 double percent;
242 int ret, len;
243
244 va_start(args, fmt);
245 len = va_arg(args, int);
246 percent = va_arg(args, double);
247 ret = percent_color_len_snprintf(hpp->buf, hpp->size, fmt, len, percent);
248 va_end(args);
249
250 return (ret >= ssize) ? (ssize - 1) : ret;
251 }
252
253 static int hpp_entry_scnprintf(struct perf_hpp *hpp, const char *fmt, ...)
254 {
255 va_list args;
256 ssize_t ssize = hpp->size;
257 int ret;
258
259 va_start(args, fmt);
260 ret = vsnprintf(hpp->buf, hpp->size, fmt, args);
261 va_end(args);
262
263 return (ret >= ssize) ? (ssize - 1) : ret;
264 }
265
266 #define __HPP_COLOR_PERCENT_FN(_type, _field) \
267 static u64 he_get_##_field(struct hist_entry *he) \
268 { \
269 return he->stat._field; \
270 } \
271 \
272 static int hpp__color_##_type(struct perf_hpp_fmt *fmt, \
273 struct perf_hpp *hpp, struct hist_entry *he) \
274 { \
275 return hpp__fmt(fmt, hpp, he, he_get_##_field, " %*.2f%%", \
276 hpp_color_scnprintf, true); \
277 }
278
279 #define __HPP_ENTRY_PERCENT_FN(_type, _field) \
280 static int hpp__entry_##_type(struct perf_hpp_fmt *fmt, \
281 struct perf_hpp *hpp, struct hist_entry *he) \
282 { \
283 return hpp__fmt(fmt, hpp, he, he_get_##_field, " %*.2f%%", \
284 hpp_entry_scnprintf, true); \
285 }
286
287 #define __HPP_SORT_FN(_type, _field) \
288 static int64_t hpp__sort_##_type(struct perf_hpp_fmt *fmt __maybe_unused, \
289 struct hist_entry *a, struct hist_entry *b) \
290 { \
291 return __hpp__sort(a, b, he_get_##_field); \
292 }
293
294 #define __HPP_COLOR_ACC_PERCENT_FN(_type, _field) \
295 static u64 he_get_acc_##_field(struct hist_entry *he) \
296 { \
297 return he->stat_acc->_field; \
298 } \
299 \
300 static int hpp__color_##_type(struct perf_hpp_fmt *fmt, \
301 struct perf_hpp *hpp, struct hist_entry *he) \
302 { \
303 return hpp__fmt_acc(fmt, hpp, he, he_get_acc_##_field, " %*.2f%%", \
304 hpp_color_scnprintf, true); \
305 }
306
307 #define __HPP_ENTRY_ACC_PERCENT_FN(_type, _field) \
308 static int hpp__entry_##_type(struct perf_hpp_fmt *fmt, \
309 struct perf_hpp *hpp, struct hist_entry *he) \
310 { \
311 return hpp__fmt_acc(fmt, hpp, he, he_get_acc_##_field, " %*.2f%%", \
312 hpp_entry_scnprintf, true); \
313 }
314
315 #define __HPP_SORT_ACC_FN(_type, _field) \
316 static int64_t hpp__sort_##_type(struct perf_hpp_fmt *fmt __maybe_unused, \
317 struct hist_entry *a, struct hist_entry *b) \
318 { \
319 return __hpp__sort_acc(a, b, he_get_acc_##_field); \
320 }
321
322 #define __HPP_ENTRY_RAW_FN(_type, _field) \
323 static u64 he_get_raw_##_field(struct hist_entry *he) \
324 { \
325 return he->stat._field; \
326 } \
327 \
328 static int hpp__entry_##_type(struct perf_hpp_fmt *fmt, \
329 struct perf_hpp *hpp, struct hist_entry *he) \
330 { \
331 return hpp__fmt(fmt, hpp, he, he_get_raw_##_field, " %*"PRIu64, \
332 hpp_entry_scnprintf, false); \
333 }
334
335 #define __HPP_SORT_RAW_FN(_type, _field) \
336 static int64_t hpp__sort_##_type(struct perf_hpp_fmt *fmt __maybe_unused, \
337 struct hist_entry *a, struct hist_entry *b) \
338 { \
339 return __hpp__sort(a, b, he_get_raw_##_field); \
340 }
341
342
343 #define HPP_PERCENT_FNS(_type, _field) \
344 __HPP_COLOR_PERCENT_FN(_type, _field) \
345 __HPP_ENTRY_PERCENT_FN(_type, _field) \
346 __HPP_SORT_FN(_type, _field)
347
348 #define HPP_PERCENT_ACC_FNS(_type, _field) \
349 __HPP_COLOR_ACC_PERCENT_FN(_type, _field) \
350 __HPP_ENTRY_ACC_PERCENT_FN(_type, _field) \
351 __HPP_SORT_ACC_FN(_type, _field)
352
353 #define HPP_RAW_FNS(_type, _field) \
354 __HPP_ENTRY_RAW_FN(_type, _field) \
355 __HPP_SORT_RAW_FN(_type, _field)
356
357 HPP_PERCENT_FNS(overhead, period)
358 HPP_PERCENT_FNS(overhead_sys, period_sys)
359 HPP_PERCENT_FNS(overhead_us, period_us)
360 HPP_PERCENT_FNS(overhead_guest_sys, period_guest_sys)
361 HPP_PERCENT_FNS(overhead_guest_us, period_guest_us)
362 HPP_PERCENT_ACC_FNS(overhead_acc, period)
363
364 HPP_RAW_FNS(samples, nr_events)
365 HPP_RAW_FNS(period, period)
366
367 static int64_t hpp__nop_cmp(struct perf_hpp_fmt *fmt __maybe_unused,
368 struct hist_entry *a __maybe_unused,
369 struct hist_entry *b __maybe_unused)
370 {
371 return 0;
372 }
373
374 static bool perf_hpp__is_hpp_entry(struct perf_hpp_fmt *a)
375 {
376 return a->header == hpp__header_fn;
377 }
378
379 static bool hpp__equal(struct perf_hpp_fmt *a, struct perf_hpp_fmt *b)
380 {
381 if (!perf_hpp__is_hpp_entry(a) || !perf_hpp__is_hpp_entry(b))
382 return false;
383
384 return a->idx == b->idx;
385 }
386
387 #define HPP__COLOR_PRINT_FNS(_name, _fn, _idx) \
388 { \
389 .name = _name, \
390 .header = hpp__header_fn, \
391 .width = hpp__width_fn, \
392 .color = hpp__color_ ## _fn, \
393 .entry = hpp__entry_ ## _fn, \
394 .cmp = hpp__nop_cmp, \
395 .collapse = hpp__nop_cmp, \
396 .sort = hpp__sort_ ## _fn, \
397 .idx = PERF_HPP__ ## _idx, \
398 .equal = hpp__equal, \
399 }
400
401 #define HPP__COLOR_ACC_PRINT_FNS(_name, _fn, _idx) \
402 { \
403 .name = _name, \
404 .header = hpp__header_fn, \
405 .width = hpp__width_fn, \
406 .color = hpp__color_ ## _fn, \
407 .entry = hpp__entry_ ## _fn, \
408 .cmp = hpp__nop_cmp, \
409 .collapse = hpp__nop_cmp, \
410 .sort = hpp__sort_ ## _fn, \
411 .idx = PERF_HPP__ ## _idx, \
412 .equal = hpp__equal, \
413 }
414
415 #define HPP__PRINT_FNS(_name, _fn, _idx) \
416 { \
417 .name = _name, \
418 .header = hpp__header_fn, \
419 .width = hpp__width_fn, \
420 .entry = hpp__entry_ ## _fn, \
421 .cmp = hpp__nop_cmp, \
422 .collapse = hpp__nop_cmp, \
423 .sort = hpp__sort_ ## _fn, \
424 .idx = PERF_HPP__ ## _idx, \
425 .equal = hpp__equal, \
426 }
427
428 struct perf_hpp_fmt perf_hpp__format[] = {
429 HPP__COLOR_PRINT_FNS("Overhead", overhead, OVERHEAD),
430 HPP__COLOR_PRINT_FNS("sys", overhead_sys, OVERHEAD_SYS),
431 HPP__COLOR_PRINT_FNS("usr", overhead_us, OVERHEAD_US),
432 HPP__COLOR_PRINT_FNS("guest sys", overhead_guest_sys, OVERHEAD_GUEST_SYS),
433 HPP__COLOR_PRINT_FNS("guest usr", overhead_guest_us, OVERHEAD_GUEST_US),
434 HPP__COLOR_ACC_PRINT_FNS("Children", overhead_acc, OVERHEAD_ACC),
435 HPP__PRINT_FNS("Samples", samples, SAMPLES),
436 HPP__PRINT_FNS("Period", period, PERIOD)
437 };
438
439 struct perf_hpp_list perf_hpp_list = {
440 .fields = LIST_HEAD_INIT(perf_hpp_list.fields),
441 .sorts = LIST_HEAD_INIT(perf_hpp_list.sorts),
442 };
443
444 #undef HPP__COLOR_PRINT_FNS
445 #undef HPP__COLOR_ACC_PRINT_FNS
446 #undef HPP__PRINT_FNS
447
448 #undef HPP_PERCENT_FNS
449 #undef HPP_PERCENT_ACC_FNS
450 #undef HPP_RAW_FNS
451
452 #undef __HPP_HEADER_FN
453 #undef __HPP_WIDTH_FN
454 #undef __HPP_COLOR_PERCENT_FN
455 #undef __HPP_ENTRY_PERCENT_FN
456 #undef __HPP_COLOR_ACC_PERCENT_FN
457 #undef __HPP_ENTRY_ACC_PERCENT_FN
458 #undef __HPP_ENTRY_RAW_FN
459 #undef __HPP_SORT_FN
460 #undef __HPP_SORT_ACC_FN
461 #undef __HPP_SORT_RAW_FN
462
463
464 void perf_hpp__init(void)
465 {
466 int i;
467
468 for (i = 0; i < PERF_HPP__MAX_INDEX; i++) {
469 struct perf_hpp_fmt *fmt = &perf_hpp__format[i];
470
471 INIT_LIST_HEAD(&fmt->list);
472
473 /* sort_list may be linked by setup_sorting() */
474 if (fmt->sort_list.next == NULL)
475 INIT_LIST_HEAD(&fmt->sort_list);
476 }
477
478 /*
479 * If user specified field order, no need to setup default fields.
480 */
481 if (is_strict_order(field_order))
482 return;
483
484 if (symbol_conf.cumulate_callchain) {
485 hpp_dimension__add_output(PERF_HPP__OVERHEAD_ACC);
486 perf_hpp__format[PERF_HPP__OVERHEAD].name = "Self";
487 }
488
489 hpp_dimension__add_output(PERF_HPP__OVERHEAD);
490
491 if (symbol_conf.show_cpu_utilization) {
492 hpp_dimension__add_output(PERF_HPP__OVERHEAD_SYS);
493 hpp_dimension__add_output(PERF_HPP__OVERHEAD_US);
494
495 if (perf_guest) {
496 hpp_dimension__add_output(PERF_HPP__OVERHEAD_GUEST_SYS);
497 hpp_dimension__add_output(PERF_HPP__OVERHEAD_GUEST_US);
498 }
499 }
500
501 if (symbol_conf.show_nr_samples)
502 hpp_dimension__add_output(PERF_HPP__SAMPLES);
503
504 if (symbol_conf.show_total_period)
505 hpp_dimension__add_output(PERF_HPP__PERIOD);
506 }
507
508 void perf_hpp_list__column_register(struct perf_hpp_list *list,
509 struct perf_hpp_fmt *format)
510 {
511 list_add_tail(&format->list, &list->fields);
512 }
513
514 void perf_hpp_list__register_sort_field(struct perf_hpp_list *list,
515 struct perf_hpp_fmt *format)
516 {
517 list_add_tail(&format->sort_list, &list->sorts);
518 }
519
520 void perf_hpp__column_unregister(struct perf_hpp_fmt *format)
521 {
522 list_del(&format->list);
523 }
524
525 void perf_hpp__cancel_cumulate(void)
526 {
527 struct perf_hpp_fmt *fmt, *acc, *ovh, *tmp;
528
529 if (is_strict_order(field_order))
530 return;
531
532 ovh = &perf_hpp__format[PERF_HPP__OVERHEAD];
533 acc = &perf_hpp__format[PERF_HPP__OVERHEAD_ACC];
534
535 perf_hpp_list__for_each_format_safe(&perf_hpp_list, fmt, tmp) {
536 if (acc->equal(acc, fmt)) {
537 perf_hpp__column_unregister(fmt);
538 continue;
539 }
540
541 if (ovh->equal(ovh, fmt))
542 fmt->name = "Overhead";
543 }
544 }
545
546 static bool fmt_equal(struct perf_hpp_fmt *a, struct perf_hpp_fmt *b)
547 {
548 return a->equal && a->equal(a, b);
549 }
550
551 void perf_hpp__setup_output_field(struct perf_hpp_list *list)
552 {
553 struct perf_hpp_fmt *fmt;
554
555 /* append sort keys to output field */
556 perf_hpp_list__for_each_sort_list(list, fmt) {
557 struct perf_hpp_fmt *pos;
558
559 perf_hpp_list__for_each_format(list, pos) {
560 if (fmt_equal(fmt, pos))
561 goto next;
562 }
563
564 perf_hpp__column_register(fmt);
565 next:
566 continue;
567 }
568 }
569
570 void perf_hpp__append_sort_keys(struct perf_hpp_list *list)
571 {
572 struct perf_hpp_fmt *fmt;
573
574 /* append output fields to sort keys */
575 perf_hpp_list__for_each_format(list, fmt) {
576 struct perf_hpp_fmt *pos;
577
578 perf_hpp_list__for_each_sort_list(list, pos) {
579 if (fmt_equal(fmt, pos))
580 goto next;
581 }
582
583 perf_hpp__register_sort_field(fmt);
584 next:
585 continue;
586 }
587 }
588
589
590 static void fmt_free(struct perf_hpp_fmt *fmt)
591 {
592 if (fmt->free)
593 fmt->free(fmt);
594 }
595
596 void perf_hpp__reset_output_field(struct perf_hpp_list *list)
597 {
598 struct perf_hpp_fmt *fmt, *tmp;
599
600 /* reset output fields */
601 perf_hpp_list__for_each_format_safe(list, fmt, tmp) {
602 list_del_init(&fmt->list);
603 list_del_init(&fmt->sort_list);
604 fmt_free(fmt);
605 }
606
607 /* reset sort keys */
608 perf_hpp_list__for_each_sort_list_safe(list, fmt, tmp) {
609 list_del_init(&fmt->list);
610 list_del_init(&fmt->sort_list);
611 fmt_free(fmt);
612 }
613 }
614
615 /*
616 * See hists__fprintf to match the column widths
617 */
618 unsigned int hists__sort_list_width(struct hists *hists)
619 {
620 struct perf_hpp_fmt *fmt;
621 int ret = 0;
622 bool first = true;
623 struct perf_hpp dummy_hpp;
624
625 hists__for_each_format(hists, fmt) {
626 if (perf_hpp__should_skip(fmt, hists))
627 continue;
628
629 if (first)
630 first = false;
631 else
632 ret += 2;
633
634 ret += fmt->width(fmt, &dummy_hpp, hists_to_evsel(hists));
635 }
636
637 if (verbose && sort__has_sym) /* Addr + origin */
638 ret += 3 + BITS_PER_LONG / 4;
639
640 return ret;
641 }
642
643 void perf_hpp__reset_width(struct perf_hpp_fmt *fmt, struct hists *hists)
644 {
645 if (perf_hpp__is_sort_entry(fmt))
646 return perf_hpp__reset_sort_width(fmt, hists);
647
648 if (perf_hpp__is_dynamic_entry(fmt))
649 return;
650
651 BUG_ON(fmt->idx >= PERF_HPP__MAX_INDEX);
652
653 switch (fmt->idx) {
654 case PERF_HPP__OVERHEAD:
655 case PERF_HPP__OVERHEAD_SYS:
656 case PERF_HPP__OVERHEAD_US:
657 case PERF_HPP__OVERHEAD_ACC:
658 fmt->len = 8;
659 break;
660
661 case PERF_HPP__OVERHEAD_GUEST_SYS:
662 case PERF_HPP__OVERHEAD_GUEST_US:
663 fmt->len = 9;
664 break;
665
666 case PERF_HPP__SAMPLES:
667 case PERF_HPP__PERIOD:
668 fmt->len = 12;
669 break;
670
671 default:
672 break;
673 }
674 }
675
676 void perf_hpp__set_user_width(const char *width_list_str)
677 {
678 struct perf_hpp_fmt *fmt;
679 const char *ptr = width_list_str;
680
681 perf_hpp_list__for_each_format(&perf_hpp_list, fmt) {
682 char *p;
683
684 int len = strtol(ptr, &p, 10);
685 fmt->user_len = len;
686
687 if (*p == ',')
688 ptr = p + 1;
689 else
690 break;
691 }
692 }
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