diff options
Diffstat (limited to 'tools/perf/util/ui/browsers/annotate.c')
| -rw-r--r-- | tools/perf/util/ui/browsers/annotate.c | 240 |
1 files changed, 240 insertions, 0 deletions
diff --git a/tools/perf/util/ui/browsers/annotate.c b/tools/perf/util/ui/browsers/annotate.c new file mode 100644 index 000000000000..55ff792459ac --- /dev/null +++ b/tools/perf/util/ui/browsers/annotate.c @@ -0,0 +1,240 @@ +#include "../browser.h" +#include "../helpline.h" +#include "../libslang.h" +#include "../../hist.h" +#include "../../sort.h" +#include "../../symbol.h" + +static void ui__error_window(const char *fmt, ...) +{ + va_list ap; + + va_start(ap, fmt); + newtWinMessagev((char *)"Error", (char *)"Ok", (char *)fmt, ap); + va_end(ap); +} + +struct annotate_browser { + struct ui_browser b; + struct rb_root entries; + struct rb_node *curr_hot; +}; + +struct objdump_line_rb_node { + struct rb_node rb_node; + double percent; + u32 idx; +}; + +static inline +struct objdump_line_rb_node *objdump_line__rb(struct objdump_line *self) +{ + return (struct objdump_line_rb_node *)(self + 1); +} + +static void annotate_browser__write(struct ui_browser *self, void *entry, int row) +{ + struct objdump_line *ol = rb_entry(entry, struct objdump_line, node); + bool current_entry = ui_browser__is_current_entry(self, row); + int width = self->width; + + if (ol->offset != -1) { + struct objdump_line_rb_node *olrb = objdump_line__rb(ol); + int color = ui_browser__percent_color(olrb->percent, current_entry); + SLsmg_set_color(color); + slsmg_printf(" %7.2f ", olrb->percent); + if (!current_entry) + SLsmg_set_color(HE_COLORSET_CODE); + } else { + int color = ui_browser__percent_color(0, current_entry); + SLsmg_set_color(color); + slsmg_write_nstring(" ", 9); + } + + SLsmg_write_char(':'); + slsmg_write_nstring(" ", 8); + if (!*ol->line) + slsmg_write_nstring(" ", width - 18); + else + slsmg_write_nstring(ol->line, width - 18); +} + +static double objdump_line__calc_percent(struct objdump_line *self, + struct list_head *head, + struct symbol *sym) +{ + double percent = 0.0; + + if (self->offset != -1) { + int len = sym->end - sym->start; + unsigned int hits = 0; + struct sym_priv *priv = symbol__priv(sym); + struct sym_ext *sym_ext = priv->ext; + struct sym_hist *h = priv->hist; + s64 offset = self->offset; + struct objdump_line *next = objdump__get_next_ip_line(head, self); + + + while (offset < (s64)len && + (next == NULL || offset < next->offset)) { + if (sym_ext) { + percent += sym_ext[offset].percent; + } else + hits += h->ip[offset]; + + ++offset; + } + + if (sym_ext == NULL && h->sum) + percent = 100.0 * hits / h->sum; + } + + return percent; +} + +static void objdump__insert_line(struct rb_root *self, + struct objdump_line_rb_node *line) +{ + struct rb_node **p = &self->rb_node; + struct rb_node *parent = NULL; + struct objdump_line_rb_node *l; + + while (*p != NULL) { + parent = *p; + l = rb_entry(parent, struct objdump_line_rb_node, rb_node); + if (line->percent < l->percent) + p = &(*p)->rb_left; + else + p = &(*p)->rb_right; + } + rb_link_node(&line->rb_node, parent, p); + rb_insert_color(&line->rb_node, self); +} + +static void annotate_browser__set_top(struct annotate_browser *self, + struct rb_node *nd) +{ + struct objdump_line_rb_node *rbpos; + struct objdump_line *pos; + unsigned back; + + ui_browser__refresh_dimensions(&self->b); + back = self->b.height / 2; + rbpos = rb_entry(nd, struct objdump_line_rb_node, rb_node); + pos = ((struct objdump_line *)rbpos) - 1; + self->b.top_idx = self->b.index = rbpos->idx; + + while (self->b.top_idx != 0 && back != 0) { + pos = list_entry(pos->node.prev, struct objdump_line, node); + + --self->b.top_idx; + --back; + } + + self->b.top = pos; + self->curr_hot = nd; +} + +static int annotate_browser__run(struct annotate_browser *self, + struct newtExitStruct *es) +{ + struct rb_node *nd; + struct hist_entry *he = self->b.priv; + + if (ui_browser__show(&self->b, he->ms.sym->name, + "<- or ESC: exit, TAB/shift+TAB: cycle thru samples") < 0) + return -1; + + newtFormAddHotKey(self->b.form, NEWT_KEY_LEFT); + + nd = self->curr_hot; + if (nd) { + newtFormAddHotKey(self->b.form, NEWT_KEY_TAB); + newtFormAddHotKey(self->b.form, NEWT_KEY_UNTAB); + } + + while (1) { + ui_browser__run(&self->b, es); + + if (es->reason != NEWT_EXIT_HOTKEY) + break; + + switch (es->u.key) { + case NEWT_KEY_TAB: + nd = rb_prev(nd); + if (nd == NULL) + nd = rb_last(&self->entries); + annotate_browser__set_top(self, nd); + break; + case NEWT_KEY_UNTAB: + nd = rb_next(nd); + if (nd == NULL) + nd = rb_first(&self->entries); + annotate_browser__set_top(self, nd); + break; + default: + goto out; + } + } +out: + ui_browser__hide(&self->b); + return 0; +} + +int hist_entry__tui_annotate(struct hist_entry *self) +{ + struct newtExitStruct es; + struct objdump_line *pos, *n; + struct objdump_line_rb_node *rbpos; + LIST_HEAD(head); + struct annotate_browser browser = { + .b = { + .entries = &head, + .refresh = ui_browser__list_head_refresh, + .seek = ui_browser__list_head_seek, + .write = annotate_browser__write, + .priv = self, + }, + }; + int ret; + + if (self->ms.sym == NULL) + return -1; + + if (self->ms.map->dso->annotate_warned) + return -1; + + if (hist_entry__annotate(self, &head, sizeof(*rbpos)) < 0) { + ui__error_window(ui_helpline__last_msg); + return -1; + } + + ui_helpline__push("Press <- or ESC to exit"); + + list_for_each_entry(pos, &head, node) { + size_t line_len = strlen(pos->line); + if (browser.b.width < line_len) + browser.b.width = line_len; + rbpos = objdump_line__rb(pos); + rbpos->idx = browser.b.nr_entries++; + rbpos->percent = objdump_line__calc_percent(pos, &head, self->ms.sym); + if (rbpos->percent < 0.01) + continue; + objdump__insert_line(&browser.entries, rbpos); + } + + /* + * Position the browser at the hottest line. + */ + browser.curr_hot = rb_last(&browser.entries); + if (browser.curr_hot) + annotate_browser__set_top(&browser, browser.curr_hot); + + browser.b.width += 18; /* Percentage */ + ret = annotate_browser__run(&browser, &es); + list_for_each_entry_safe(pos, n, &head, node) { + list_del(&pos->node); + objdump_line__free(pos); + } + return ret; +} |