summaryrefslogtreecommitdiff
path: root/tools/perf/ui/browser.c
blob: 6680fa5cb9dd9bda53617b0bf25214a343c0bd27 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
#include "../util.h"
#include "../cache.h"
#include "../../perf.h"
#include "libslang.h"
#include "ui.h"
#include "util.h"
#include <linux/compiler.h>
#include <linux/list.h>
#include <linux/rbtree.h>
#include <stdlib.h>
#include <sys/ttydefaults.h>
#include "browser.h"
#include "helpline.h"
#include "keysyms.h"
#include "../color.h"

static int ui_browser__percent_color(struct ui_browser *browser,
				     double percent, bool current)
{
	if (current && (!browser->use_navkeypressed || browser->navkeypressed))
		return HE_COLORSET_SELECTED;
	if (percent >= MIN_RED)
		return HE_COLORSET_TOP;
	if (percent >= MIN_GREEN)
		return HE_COLORSET_MEDIUM;
	return HE_COLORSET_NORMAL;
}

int ui_browser__set_color(struct ui_browser *browser, int color)
{
	int ret = browser->current_color;
	browser->current_color = color;
	SLsmg_set_color(color);
	return ret;
}

void ui_browser__set_percent_color(struct ui_browser *browser,
				   double percent, bool current)
{
	 int color = ui_browser__percent_color(browser, percent, current);
	 ui_browser__set_color(browser, color);
}

void ui_browser__gotorc(struct ui_browser *browser, int y, int x)
{
	SLsmg_gotorc(browser->y + y, browser->x + x);
}

static struct list_head *
ui_browser__list_head_filter_entries(struct ui_browser *browser,
				     struct list_head *pos)
{
	do {
		if (!browser->filter || !browser->filter(browser, pos))
			return pos;
		pos = pos->next;
	} while (pos != browser->entries);

	return NULL;
}

static struct list_head *
ui_browser__list_head_filter_prev_entries(struct ui_browser *browser,
					  struct list_head *pos)
{
	do {
		if (!browser->filter || !browser->filter(browser, pos))
			return pos;
		pos = pos->prev;
	} while (pos != browser->entries);

	return NULL;
}

void ui_browser__list_head_seek(struct ui_browser *browser, off_t offset, int whence)
{
	struct list_head *head = browser->entries;
	struct list_head *pos;

	if (browser->nr_entries == 0)
		return;

	switch (whence) {
	case SEEK_SET:
		pos = ui_browser__list_head_filter_entries(browser, head->next);
		break;
	case SEEK_CUR:
		pos = browser->top;
		break;
	case SEEK_END:
		pos = ui_browser__list_head_filter_prev_entries(browser, head->prev);
		break;
	default:
		return;
	}

	assert(pos != NULL);

	if (offset > 0) {
		while (offset-- != 0)
			pos = ui_browser__list_head_filter_entries(browser, pos->next);
	} else {
		while (offset++ != 0)
			pos = ui_browser__list_head_filter_prev_entries(browser, pos->prev);
	}

	browser->top = pos;
}

void ui_browser__rb_tree_seek(struct ui_browser *browser, off_t offset, int whence)
{
	struct rb_root *root = browser->entries;
	struct rb_node *nd;

	switch (whence) {
	case SEEK_SET:
		nd = rb_first(root);
		break;
	case SEEK_CUR:
		nd = browser->top;
		break;
	case SEEK_END:
		nd = rb_last(root);
		break;
	default:
		return;
	}

	if (offset > 0) {
		while (offset-- != 0)
			nd = rb_next(nd);
	} else {
		while (offset++ != 0)
			nd = rb_prev(nd);
	}

	browser->top = nd;
}

unsigned int ui_browser__rb_tree_refresh(struct ui_browser *browser)
{
	struct rb_node *nd;
	int row = 0;

	if (browser->top == NULL)
                browser->top = rb_first(browser->entries);

	nd = browser->top;

	while (nd != NULL) {
		ui_browser__gotorc(browser, row, 0);
		browser->write(browser, nd, row);
		if (++row == browser->rows)
			break;
		nd = rb_next(nd);
	}

	return row;
}

bool ui_browser__is_current_entry(struct ui_browser *browser, unsigned row)
{
	return browser->top_idx + row == browser->index;
}

void ui_browser__refresh_dimensions(struct ui_browser *browser)
{
	browser->width = SLtt_Screen_Cols - 1;
	browser->height = browser->rows = SLtt_Screen_Rows - 2;
	browser->y = 1;
	browser->x = 0;
}

void ui_browser__handle_resize(struct ui_browser *browser)
{
	ui__refresh_dimensions(false);
	ui_browser__show(browser, browser->title, ui_helpline__current);
	ui_browser__refresh(browser);
}

int ui_browser__warning(struct ui_browser *browser, int timeout,
			const char *format, ...)
{
	va_list args;
	char *text;
	int key = 0, err;

	va_start(args, format);
	err = vasprintf(&text, format, args);
	va_end(args);

	if (err < 0) {
		va_start(args, format);
		ui_helpline__vpush(format, args);
		va_end(args);
	} else {
		while ((key = ui__question_window("Warning!", text,
						   "Press any key...",
						   timeout)) == K_RESIZE)
			ui_browser__handle_resize(browser);
		free(text);
	}

	return key;
}

int ui_browser__help_window(struct ui_browser *browser, const char *text)
{
	int key;

	while ((key = ui__help_window(text)) == K_RESIZE)
		ui_browser__handle_resize(browser);

	return key;
}

bool ui_browser__dialog_yesno(struct ui_browser *browser, const char *text)
{
	int key;

	while ((key = ui__dialog_yesno(text)) == K_RESIZE)
		ui_browser__handle_resize(browser);

	return key == K_ENTER || toupper(key) == 'Y';
}

void ui_browser__reset_index(struct ui_browser *browser)
{
	browser->index = browser->top_idx = 0;
	browser->seek(browser, 0, SEEK_SET);
}

void __ui_browser__show_title(struct ui_browser *browser, const char *title)
{
	SLsmg_gotorc(0, 0);
	ui_browser__set_color(browser, HE_COLORSET_ROOT);
	slsmg_write_nstring(title, browser->width + 1);
}

void ui_browser__show_title(struct ui_browser *browser, const char *title)
{
	pthread_mutex_lock(&ui__lock);
	__ui_browser__show_title(browser, title);
	pthread_mutex_unlock(&ui__lock);
}

int ui_browser__show(struct ui_browser *browser, const char *title,
		     const char *helpline, ...)
{
	int err;
	va_list ap;

	if (browser->refresh_dimensions == NULL)
		browser->refresh_dimensions = ui_browser__refresh_dimensions;

	browser->refresh_dimensions(browser);

	pthread_mutex_lock(&ui__lock);
	__ui_browser__show_title(browser, title);

	browser->title = title;
	zfree(&browser->helpline);

	va_start(ap, helpline);
	err = vasprintf(&browser->helpline, helpline, ap);
	va_end(ap);
	if (err > 0)
		ui_helpline__push(browser->helpline);
	pthread_mutex_unlock(&ui__lock);
	return err ? 0 : -1;
}

void ui_browser__hide(struct ui_browser *browser)
{
	pthread_mutex_lock(&ui__lock);
	ui_helpline__pop();
	zfree(&browser->helpline);
	pthread_mutex_unlock(&ui__lock);
}

static void ui_browser__scrollbar_set(struct ui_browser *browser)
{
	int height = browser->height, h = 0, pct = 0,
	    col = browser->width,
	    row = 0;

	if (browser->nr_entries > 1) {
		pct = ((browser->index * (browser->height - 1)) /
		       (browser->nr_entries - 1));
	}

	SLsmg_set_char_set(1);

	while (h < height) {
	        ui_browser__gotorc(browser, row++, col);
		SLsmg_write_char(h == pct ? SLSMG_DIAMOND_CHAR : SLSMG_CKBRD_CHAR);
		++h;
	}

	SLsmg_set_char_set(0);
}

static int __ui_browser__refresh(struct ui_browser *browser)
{
	int row;
	int width = browser->width;

	row = browser->refresh(browser);
	ui_browser__set_color(browser, HE_COLORSET_NORMAL);

	if (!browser->use_navkeypressed || browser->navkeypressed)
		ui_browser__scrollbar_set(browser);
	else
		width += 1;

	SLsmg_fill_region(browser->y + row, browser->x,
			  browser->height - row, width, ' ');

	return 0;
}

int ui_browser__refresh(struct ui_browser *browser)
{
	pthread_mutex_lock(&ui__lock);
	__ui_browser__refresh(browser);
	pthread_mutex_unlock(&ui__lock);

	return 0;
}

/*
 * Here we're updating nr_entries _after_ we started browsing, i.e.  we have to
 * forget about any reference to any entry in the underlying data structure,
 * that is why we do a SEEK_SET. Think about 'perf top' in the hists browser
 * after an output_resort and hist decay.
 */
void ui_browser__update_nr_entries(struct ui_browser *browser, u32 nr_entries)
{
	off_t offset = nr_entries - browser->nr_entries;

	browser->nr_entries = nr_entries;

	if (offset < 0) {
		if (browser->top_idx < (u64)-offset)
			offset = -browser->top_idx;

		browser->index += offset;
		browser->top_idx += offset;
	}

	browser->top = NULL;
	browser->seek(browser, browser->top_idx, SEEK_SET);
}

int ui_browser__run(struct ui_browser *browser, int delay_secs)
{
	int err, key;

	while (1) {
		off_t offset;

		pthread_mutex_lock(&ui__lock);
		err = __ui_browser__refresh(browser);
		SLsmg_refresh();
		pthread_mutex_unlock(&ui__lock);
		if (err < 0)
			break;

		key = ui__getch(delay_secs);

		if (key == K_RESIZE) {
			ui__refresh_dimensions(false);
			browser->refresh_dimensions(browser);
			__ui_browser__show_title(browser, browser->title);
			ui_helpline__puts(browser->helpline);
			continue;
		}

		if (browser->use_navkeypressed && !browser->navkeypressed) {
			if (key == K_DOWN || key == K_UP ||
			    key == K_PGDN || key == K_PGUP ||
			    key == K_HOME || key == K_END ||
			    key == ' ') {
				browser->navkeypressed = true;
				continue;
			} else
				return key;
		}

		switch (key) {
		case K_DOWN:
			if (browser->index == browser->nr_entries - 1)
				break;
			++browser->index;
			if (browser->index == browser->top_idx + browser->rows) {
				++browser->top_idx;
				browser->seek(browser, +1, SEEK_CUR);
			}
			break;
		case K_UP:
			if (browser->index == 0)
				break;
			--browser->index;
			if (browser->index < browser->top_idx) {
				--browser->top_idx;
				browser->seek(browser, -1, SEEK_CUR);
			}
			break;
		case K_PGDN:
		case ' ':
			if (browser->top_idx + browser->rows > browser->nr_entries - 1)
				break;

			offset = browser->rows;
			if (browser->index + offset > browser->nr_entries - 1)
				offset = browser->nr_entries - 1 - browser->index;
			browser->index += offset;
			browser->top_idx += offset;
			browser->seek(browser, +offset, SEEK_CUR);
			break;
		case K_PGUP:
			if (browser->top_idx == 0)
				break;

			if (browser->top_idx < browser->rows)
				offset = browser->top_idx;
			else
				offset = browser->rows;

			browser->index -= offset;
			browser->top_idx -= offset;
			browser->seek(browser, -offset, SEEK_CUR);
			break;
		case K_HOME:
			ui_browser__reset_index(browser);
			break;
		case K_END:
			offset = browser->rows - 1;
			if (offset >= browser->nr_entries)
				offset = browser->nr_entries - 1;

			browser->index = browser->nr_entries - 1;
			browser->top_idx = browser->index - offset;
			browser->seek(browser, -offset, SEEK_END);
			break;
		default:
			return key;
		}
	}
	return -1;
}

unsigned int ui_browser__list_head_refresh(struct ui_browser *browser)
{
	struct list_head *pos;
	struct list_head *head = browser->entries;
	int row = 0;

	if (browser->top == NULL || browser->top == browser->entries)
                browser->top = ui_browser__list_head_filter_entries(browser, head->next);

	pos = browser->top;

	list_for_each_from(pos, head) {
		if (!browser->filter || !browser->filter(browser, pos)) {
			ui_browser__gotorc(browser, row, 0);
			browser->write(browser, pos, row);
			if (++row == browser->rows)
				break;
		}
	}

	return row;
}

static struct ui_browser_colorset {
	const char *name, *fg, *bg;
	int colorset;
} ui_browser__colorsets[] = {
	{
		.colorset = HE_COLORSET_TOP,
		.name	  = "top",
		.fg	  = "red",
		.bg	  = "default",
	},
	{
		.colorset = HE_COLORSET_MEDIUM,
		.name	  = "medium",
		.fg	  = "green",
		.bg	  = "default",
	},
	{
		.colorset = HE_COLORSET_NORMAL,
		.name	  = "normal",
		.fg	  = "default",
		.bg	  = "default",
	},
	{
		.colorset = HE_COLORSET_SELECTED,
		.name	  = "selected",
		.fg	  = "black",
		.bg	  = "lightgray",
	},
	{
		.colorset = HE_COLORSET_CODE,
		.name	  = "code",
		.fg	  = "blue",
		.bg	  = "default",
	},
	{
		.colorset = HE_COLORSET_ADDR,
		.name	  = "addr",
		.fg	  = "magenta",
		.bg	  = "default",
	},
	{
		.colorset = HE_COLORSET_ROOT,
		.name	  = "root",
		.fg	  = "white",
		.bg	  = "blue",
	},
	{
		.name = NULL,
	}
};


static int ui_browser__color_config(const char *var, const char *value,
				    void *data __maybe_unused)
{
	char *fg = NULL, *bg;
	int i;

	/* same dir for all commands */
	if (prefixcmp(var, "colors.") != 0)
		return 0;

	for (i = 0; ui_browser__colorsets[i].name != NULL; ++i) {
		const char *name = var + 7;

		if (strcmp(ui_browser__colorsets[i].name, name) != 0)
			continue;

		fg = strdup(value);
		if (fg == NULL)
			break;

		bg = strchr(fg, ',');
		if (bg == NULL)
			break;

		*bg = '\0';
		while (isspace(*++bg));
		ui_browser__colorsets[i].bg = bg;
		ui_browser__colorsets[i].fg = fg;
		return 0;
	}

	free(fg);
	return -1;
}

void ui_browser__argv_seek(struct ui_browser *browser, off_t offset, int whence)
{
	switch (whence) {
	case SEEK_SET:
		browser->top = browser->entries;
		break;
	case SEEK_CUR:
		browser->top = browser->top + browser->top_idx + offset;
		break;
	case SEEK_END:
		browser->top = browser->top + browser->nr_entries - 1 + offset;
		break;
	default:
		return;
	}
}

unsigned int ui_browser__argv_refresh(struct ui_browser *browser)
{
	unsigned int row = 0, idx = browser->top_idx;
	char **pos;

	if (browser->top == NULL)
		browser->top = browser->entries;

	pos = (char **)browser->top;
	while (idx < browser->nr_entries) {
		if (!browser->filter || !browser->filter(browser, *pos)) {
			ui_browser__gotorc(browser, row, 0);
			browser->write(browser, pos, row);
			if (++row == browser->rows)
				break;
		}

		++idx;
		++pos;
	}

	return row;
}

void __ui_browser__vline(struct ui_browser *browser, unsigned int column,
			 u16 start, u16 end)
{
	SLsmg_set_char_set(1);
	ui_browser__gotorc(browser, start, column);
	SLsmg_draw_vline(end - start + 1);
	SLsmg_set_char_set(0);
}

void ui_browser__write_graph(struct ui_browser *browser __maybe_unused,
			     int graph)
{
	SLsmg_set_char_set(1);
	SLsmg_write_char(graph);
	SLsmg_set_char_set(0);
}

static void __ui_browser__line_arrow_up(struct ui_browser *browser,
					unsigned int column,
					u64 start, u64 end)
{
	unsigned int row, end_row;

	SLsmg_set_char_set(1);

	if (start < browser->top_idx + browser->rows) {
		row = start - browser->top_idx;
		ui_browser__gotorc(browser, row, column);
		SLsmg_write_char(SLSMG_LLCORN_CHAR);
		ui_browser__gotorc(browser, row, column + 1);
		SLsmg_draw_hline(2);

		if (row-- == 0)
			goto out;
	} else
		row = browser->rows - 1;

	if (end > browser->top_idx)
		end_row = end - browser->top_idx;
	else
		end_row = 0;

	ui_browser__gotorc(browser, end_row, column);
	SLsmg_draw_vline(row - end_row + 1);

	ui_browser__gotorc(browser, end_row, column);
	if (end >= browser->top_idx) {
		SLsmg_write_char(SLSMG_ULCORN_CHAR);
		ui_browser__gotorc(browser, end_row, column + 1);
		SLsmg_write_char(SLSMG_HLINE_CHAR);
		ui_browser__gotorc(browser, end_row, column + 2);
		SLsmg_write_char(SLSMG_RARROW_CHAR);
	}
out:
	SLsmg_set_char_set(0);
}

static void __ui_browser__line_arrow_down(struct ui_browser *browser,
					  unsigned int column,
					  u64 start, u64 end)
{
	unsigned int row, end_row;

	SLsmg_set_char_set(1);

	if (start >= browser->top_idx) {
		row = start - browser->top_idx;
		ui_browser__gotorc(browser, row, column);
		SLsmg_write_char(SLSMG_ULCORN_CHAR);
		ui_browser__gotorc(browser, row, column + 1);
		SLsmg_draw_hline(2);

		if (row++ == 0)
			goto out;
	} else
		row = 0;

	if (end >= browser->top_idx + browser->rows)
		end_row = browser->rows - 1;
	else
		end_row = end - browser->top_idx;

	ui_browser__gotorc(browser, row, column);
	SLsmg_draw_vline(end_row - row + 1);

	ui_browser__gotorc(browser, end_row, column);
	if (end < browser->top_idx + browser->rows) {
		SLsmg_write_char(SLSMG_LLCORN_CHAR);
		ui_browser__gotorc(browser, end_row, column + 1);
		SLsmg_write_char(SLSMG_HLINE_CHAR);
		ui_browser__gotorc(browser, end_row, column + 2);
		SLsmg_write_char(SLSMG_RARROW_CHAR);
	}
out:
	SLsmg_set_char_set(0);
}

void __ui_browser__line_arrow(struct ui_browser *browser, unsigned int column,
			      u64 start, u64 end)
{
	if (start > end)
		__ui_browser__line_arrow_up(browser, column, start, end);
	else
		__ui_browser__line_arrow_down(browser, column, start, end);
}

void ui_browser__init(void)
{
	int i = 0;

	perf_config(ui_browser__color_config, NULL);

	while (ui_browser__colorsets[i].name) {
		struct ui_browser_colorset *c = &ui_browser__colorsets[i++];
		sltt_set_color(c->colorset, c->name, c->fg, c->bg);
	}

	annotate_browser__init();
}