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perf ui annotate browser: Add list based search for addr offset
[linux-2.6.git] / tools / perf / util / ui / browsers / annotate.c
blobc52543c69ae00f4143bd18aeef9d7f50273eb72b
1 #include "../../util.h"
2 #include "../browser.h"
3 #include "../helpline.h"
4 #include "../libslang.h"
5 #include "../ui.h"
6 #include "../util.h"
7 #include "../../annotate.h"
8 #include "../../hist.h"
9 #include "../../sort.h"
10 #include "../../symbol.h"
11 #include <pthread.h>
12 #include <newt.h>
13
14 struct annotate_browser {
15 struct ui_browser b;
16 struct rb_root entries;
17 struct rb_node *curr_hot;
18 struct objdump_line *selection;
19 u64 start;
20 int nr_asm_entries;
21 int nr_entries;
22 bool hide_src_code;
23 bool use_offset;
24 };
25
26 struct objdump_line_rb_node {
27 struct rb_node rb_node;
28 double percent;
29 u32 idx;
30 int idx_asm;
31 };
32
33 static inline
34 struct objdump_line_rb_node *objdump_line__rb(struct objdump_line *self)
35 {
36 return (struct objdump_line_rb_node *)(self + 1);
37 }
38
39 static bool objdump_line__filter(struct ui_browser *browser, void *entry)
40 {
41 struct annotate_browser *ab = container_of(browser, struct annotate_browser, b);
42
43 if (ab->hide_src_code) {
44 struct objdump_line *ol = list_entry(entry, struct objdump_line, node);
45 return ol->offset == -1;
46 }
47
48 return false;
49 }
50
51 static void annotate_browser__write(struct ui_browser *self, void *entry, int row)
52 {
53 struct annotate_browser *ab = container_of(self, struct annotate_browser, b);
54 struct objdump_line *ol = list_entry(entry, struct objdump_line, node);
55 bool current_entry = ui_browser__is_current_entry(self, row);
56 bool change_color = (!ab->hide_src_code &&
57 (!current_entry || (self->use_navkeypressed &&
58 !self->navkeypressed)));
59 int width = self->width;
60
61 if (ol->offset != -1) {
62 struct objdump_line_rb_node *olrb = objdump_line__rb(ol);
63 ui_browser__set_percent_color(self, olrb->percent, current_entry);
64 slsmg_printf(" %7.2f ", olrb->percent);
65 } else {
66 ui_browser__set_percent_color(self, 0, current_entry);
67 slsmg_write_nstring(" ", 9);
68 }
69
70 SLsmg_write_char(':');
71 slsmg_write_nstring(" ", 8);
72
73 /* The scroll bar isn't being used */
74 if (!self->navkeypressed)
75 width += 1;
76
77 if (ol->offset != -1 && change_color)
78 ui_browser__set_color(self, HE_COLORSET_CODE);
79
80 if (!*ol->line)
81 slsmg_write_nstring(" ", width - 18);
82 else if (ol->offset == -1)
83 slsmg_write_nstring(ol->line, width - 18);
84 else {
85 char bf[64];
86 u64 addr = ol->offset;
87 int printed, color = -1;
88
89 if (!ab->use_offset)
90 addr += ab->start;
91
92 printed = scnprintf(bf, sizeof(bf), " %" PRIx64 ":", addr);
93 if (change_color)
94 color = ui_browser__set_color(self, HE_COLORSET_ADDR);
95 slsmg_write_nstring(bf, printed);
96 if (change_color)
97 ui_browser__set_color(self, color);
98 slsmg_write_nstring(ol->line, width - 18 - printed);
99 }
100
101 if (current_entry)
102 ab->selection = ol;
103 }
104
105 static double objdump_line__calc_percent(struct objdump_line *self,
106 struct symbol *sym, int evidx)
107 {
108 double percent = 0.0;
109
110 if (self->offset != -1) {
111 int len = sym->end - sym->start;
112 unsigned int hits = 0;
113 struct annotation *notes = symbol__annotation(sym);
114 struct source_line *src_line = notes->src->lines;
115 struct sym_hist *h = annotation__histogram(notes, evidx);
116 s64 offset = self->offset;
117 struct objdump_line *next;
118
119 next = objdump__get_next_ip_line(&notes->src->source, self);
120 while (offset < (s64)len &&
121 (next == NULL || offset < next->offset)) {
122 if (src_line) {
123 percent += src_line[offset].percent;
124 } else
125 hits += h->addr[offset];
126
127 ++offset;
128 }
129 /*
130 * If the percentage wasn't already calculated in
131 * symbol__get_source_line, do it now:
132 */
133 if (src_line == NULL && h->sum)
134 percent = 100.0 * hits / h->sum;
135 }
136
137 return percent;
138 }
139
140 static void objdump__insert_line(struct rb_root *self,
141 struct objdump_line_rb_node *line)
142 {
143 struct rb_node **p = &self->rb_node;
144 struct rb_node *parent = NULL;
145 struct objdump_line_rb_node *l;
146
147 while (*p != NULL) {
148 parent = *p;
149 l = rb_entry(parent, struct objdump_line_rb_node, rb_node);
150 if (line->percent < l->percent)
151 p = &(*p)->rb_left;
152 else
153 p = &(*p)->rb_right;
154 }
155 rb_link_node(&line->rb_node, parent, p);
156 rb_insert_color(&line->rb_node, self);
157 }
158
159 static void annotate_browser__set_top(struct annotate_browser *self,
160 struct objdump_line *pos, u32 idx)
161 {
162 unsigned back;
163
164 ui_browser__refresh_dimensions(&self->b);
165 back = self->b.height / 2;
166 self->b.top_idx = self->b.index = idx;
167
168 while (self->b.top_idx != 0 && back != 0) {
169 pos = list_entry(pos->node.prev, struct objdump_line, node);
170
171 --self->b.top_idx;
172 --back;
173 }
174
175 self->b.top = pos;
176 }
177
178 static void annotate_browser__set_rb_top(struct annotate_browser *browser,
179 struct rb_node *nd)
180 {
181 struct objdump_line_rb_node *rbpos;
182 struct objdump_line *pos;
183
184 rbpos = rb_entry(nd, struct objdump_line_rb_node, rb_node);
185 pos = ((struct objdump_line *)rbpos) - 1;
186 annotate_browser__set_top(browser, pos, rbpos->idx);
187 browser->curr_hot = nd;
188 }
189
190 static void annotate_browser__calc_percent(struct annotate_browser *browser,
191 int evidx)
192 {
193 struct map_symbol *ms = browser->b.priv;
194 struct symbol *sym = ms->sym;
195 struct annotation *notes = symbol__annotation(sym);
196 struct objdump_line *pos;
197
198 browser->entries = RB_ROOT;
199
200 pthread_mutex_lock(&notes->lock);
201
202 list_for_each_entry(pos, &notes->src->source, node) {
203 struct objdump_line_rb_node *rbpos = objdump_line__rb(pos);
204 rbpos->percent = objdump_line__calc_percent(pos, sym, evidx);
205 if (rbpos->percent < 0.01) {
206 RB_CLEAR_NODE(&rbpos->rb_node);
207 continue;
208 }
209 objdump__insert_line(&browser->entries, rbpos);
210 }
211 pthread_mutex_unlock(&notes->lock);
212
213 browser->curr_hot = rb_last(&browser->entries);
214 }
215
216 static bool annotate_browser__toggle_source(struct annotate_browser *browser)
217 {
218 struct objdump_line *ol;
219 struct objdump_line_rb_node *olrb;
220 off_t offset = browser->b.index - browser->b.top_idx;
221
222 browser->b.seek(&browser->b, offset, SEEK_CUR);
223 ol = list_entry(browser->b.top, struct objdump_line, node);
224 olrb = objdump_line__rb(ol);
225
226 if (browser->hide_src_code) {
227 if (olrb->idx_asm < offset)
228 offset = olrb->idx;
229
230 browser->b.nr_entries = browser->nr_entries;
231 browser->hide_src_code = false;
232 browser->b.seek(&browser->b, -offset, SEEK_CUR);
233 browser->b.top_idx = olrb->idx - offset;
234 browser->b.index = olrb->idx;
235 } else {
236 if (olrb->idx_asm < 0) {
237 ui_helpline__puts("Only available for assembly lines.");
238 browser->b.seek(&browser->b, -offset, SEEK_CUR);
239 return false;
240 }
241
242 if (olrb->idx_asm < offset)
243 offset = olrb->idx_asm;
244
245 browser->b.nr_entries = browser->nr_asm_entries;
246 browser->hide_src_code = true;
247 browser->b.seek(&browser->b, -offset, SEEK_CUR);
248 browser->b.top_idx = olrb->idx_asm - offset;
249 browser->b.index = olrb->idx_asm;
250 }
251
252 return true;
253 }
254
255 static bool annotate_browser__callq(struct annotate_browser *browser,
256 int evidx, void (*timer)(void *arg),
257 void *arg, int delay_secs)
258 {
259 struct map_symbol *ms = browser->b.priv;
260 struct symbol *sym = ms->sym;
261 struct annotation *notes;
262 struct symbol *target;
263 char *s = strstr(browser->selection->line, "callq ");
264 u64 ip;
265
266 if (s == NULL)
267 return false;
268
269 s = strchr(s, ' ');
270 if (s++ == NULL) {
271 ui_helpline__puts("Invallid callq instruction.");
272 return true;
273 }
274
275 ip = strtoull(s, NULL, 16);
276 ip = ms->map->map_ip(ms->map, ip);
277 target = map__find_symbol(ms->map, ip, NULL);
278 if (target == NULL) {
279 ui_helpline__puts("The called function was not found.");
280 return true;
281 }
282
283 notes = symbol__annotation(target);
284 pthread_mutex_lock(&notes->lock);
285
286 if (notes->src == NULL && symbol__alloc_hist(target) < 0) {
287 pthread_mutex_unlock(&notes->lock);
288 ui__warning("Not enough memory for annotating '%s' symbol!\n",
289 target->name);
290 return true;
291 }
292
293 pthread_mutex_unlock(&notes->lock);
294 symbol__tui_annotate(target, ms->map, evidx, timer, arg, delay_secs);
295 ui_browser__show_title(&browser->b, sym->name);
296 return true;
297 }
298
299 static int annotate_browser__run(struct annotate_browser *self, int evidx,
300 void(*timer)(void *arg),
301 void *arg, int delay_secs)
302 {
303 struct rb_node *nd = NULL;
304 struct map_symbol *ms = self->b.priv;
305 struct symbol *sym = ms->sym;
306 const char *help = "<-/ESC: Exit, TAB/shift+TAB: Cycle hot lines, "
307 "H: Go to hottest line, ->/ENTER: Line action, "
308 "O: Toggle offset view, "
309 "S: Toggle source code view";
310 int key;
311
312 if (ui_browser__show(&self->b, sym->name, help) < 0)
313 return -1;
314
315 annotate_browser__calc_percent(self, evidx);
316
317 if (self->curr_hot)
318 annotate_browser__set_rb_top(self, self->curr_hot);
319
320 nd = self->curr_hot;
321
322 while (1) {
323 key = ui_browser__run(&self->b, delay_secs);
324
325 if (delay_secs != 0) {
326 annotate_browser__calc_percent(self, evidx);
327 /*
328 * Current line focus got out of the list of most active
329 * lines, NULL it so that if TAB|UNTAB is pressed, we
330 * move to curr_hot (current hottest line).
331 */
332 if (nd != NULL && RB_EMPTY_NODE(nd))
333 nd = NULL;
334 }
335
336 switch (key) {
337 case K_TIMER:
338 if (timer != NULL)
339 timer(arg);
340
341 if (delay_secs != 0)
342 symbol__annotate_decay_histogram(sym, evidx);
343 continue;
344 case K_TAB:
345 if (nd != NULL) {
346 nd = rb_prev(nd);
347 if (nd == NULL)
348 nd = rb_last(&self->entries);
349 } else
350 nd = self->curr_hot;
351 break;
352 case K_UNTAB:
353 if (nd != NULL)
354 nd = rb_next(nd);
355 if (nd == NULL)
356 nd = rb_first(&self->entries);
357 else
358 nd = self->curr_hot;
359 break;
360 case 'H':
361 case 'h':
362 nd = self->curr_hot;
363 break;
364 case 'S':
365 case 's':
366 if (annotate_browser__toggle_source(self))
367 ui_helpline__puts(help);
368 continue;
369 case 'O':
370 case 'o':
371 self->use_offset = !self->use_offset;
372 continue;
373 case K_ENTER:
374 case K_RIGHT:
375 if (self->selection == NULL)
376 ui_helpline__puts("Huh? No selection. Report to linux-kernel@vger.kernel.org");
377 else if (self->selection->offset == -1)
378 ui_helpline__puts("Actions are only available for assembly lines.");
379 else if (!annotate_browser__callq(self, evidx, timer, arg, delay_secs))
380 ui_helpline__puts("Actions are only available for the 'callq' instruction.");
381 continue;
382 case K_LEFT:
383 case K_ESC:
384 case 'q':
385 case CTRL('c'):
386 goto out;
387 default:
388 continue;
389 }
390
391 if (nd != NULL)
392 annotate_browser__set_rb_top(self, nd);
393 }
394 out:
395 ui_browser__hide(&self->b);
396 return key;
397 }
398
399 int hist_entry__tui_annotate(struct hist_entry *he, int evidx,
400 void(*timer)(void *arg), void *arg, int delay_secs)
401 {
402 return symbol__tui_annotate(he->ms.sym, he->ms.map, evidx,
403 timer, arg, delay_secs);
404 }
405
406 int symbol__tui_annotate(struct symbol *sym, struct map *map, int evidx,
407 void(*timer)(void *arg), void *arg,
408 int delay_secs)
409 {
410 struct objdump_line *pos, *n;
411 struct annotation *notes;
412 struct map_symbol ms = {
413 .map = map,
414 .sym = sym,
415 };
416 struct annotate_browser browser = {
417 .b = {
418 .refresh = ui_browser__list_head_refresh,
419 .seek = ui_browser__list_head_seek,
420 .write = annotate_browser__write,
421 .filter = objdump_line__filter,
422 .priv = &ms,
423 .use_navkeypressed = true,
424 },
425 };
426 int ret;
427
428 if (sym == NULL)
429 return -1;
430
431 if (map->dso->annotate_warned)
432 return -1;
433
434 if (symbol__annotate(sym, map, sizeof(struct objdump_line_rb_node)) < 0) {
435 ui__error("%s", ui_helpline__last_msg);
436 return -1;
437 }
438
439 ui_helpline__push("Press <- or ESC to exit");
440
441 notes = symbol__annotation(sym);
442 browser.start = map__rip_2objdump(map, sym->start);
443
444 list_for_each_entry(pos, &notes->src->source, node) {
445 struct objdump_line_rb_node *rbpos;
446 size_t line_len = strlen(pos->line);
447
448 if (browser.b.width < line_len)
449 browser.b.width = line_len;
450 rbpos = objdump_line__rb(pos);
451 rbpos->idx = browser.nr_entries++;
452 if (pos->offset != -1)
453 rbpos->idx_asm = browser.nr_asm_entries++;
454 else
455 rbpos->idx_asm = -1;
456 }
457
458 browser.b.nr_entries = browser.nr_entries;
459 browser.b.entries = &notes->src->source,
460 browser.b.width += 18; /* Percentage */
461 ret = annotate_browser__run(&browser, evidx, timer, arg, delay_secs);
462 list_for_each_entry_safe(pos, n, &notes->src->source, node) {
463 list_del(&pos->node);
464 objdump_line__free(pos);
465 }
466 return ret;
467 }
Linus' kernel tree