1 files changed, 302 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 00000000..0229723a
--- /dev/null
+++ b/tools/perf/util/ui/browsers/annotate.c
@@ -0,0 +1,302 @@
+#include "../browser.h"
+#include "../helpline.h"
+#include "../libslang.h"
+#include "../../annotate.h"
+#include "../../hist.h"
+#include "../../sort.h"
+#include "../../symbol.h"
+#include <pthread.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);
+		ui_browser__set_percent_color(self, olrb->percent, current_entry);
+		slsmg_printf(" %7.2f ", olrb->percent);
+	} else {
+		ui_browser__set_percent_color(self, 0, current_entry);
+		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);
+
+	if (!current_entry)
+		ui_browser__set_color(self, HE_COLORSET_CODE);
+}
+
+static double objdump_line__calc_percent(struct objdump_line *self,
+					 struct symbol *sym, int evidx)
+{
+	double percent = 0.0;
+
+	if (self->offset != -1) {
+		int len = sym->end - sym->start;
+		unsigned int hits = 0;
+		struct annotation *notes = symbol__annotation(sym);
+		struct source_line *src_line = notes->src->lines;
+		struct sym_hist *h = annotation__histogram(notes, evidx);
+		s64 offset = self->offset;
+		struct objdump_line *next;
+
+		next = objdump__get_next_ip_line(&notes->src->source, self);
+		while (offset < (s64)len &&
+		       (next == NULL || offset < next->offset)) {
+			if (src_line) {
+				percent += src_line[offset].percent;
+			} else
+				hits += h->addr[offset];
+
+			++offset;
+		}
+		/*
+ 		 * If the percentage wasn't already calculated in
+ 		 * symbol__get_source_line, do it now:
+ 		 */
+		if (src_line == 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 void annotate_browser__calc_percent(struct annotate_browser *browser,
+					   int evidx)
+{
+	struct symbol *sym = browser->b.priv;
+	struct annotation *notes = symbol__annotation(sym);
+	struct objdump_line *pos;
+
+	browser->entries = RB_ROOT;
+
+	pthread_mutex_lock(&notes->lock);
+
+	list_for_each_entry(pos, &notes->src->source, node) {
+		struct objdump_line_rb_node *rbpos = objdump_line__rb(pos);
+		rbpos->percent = objdump_line__calc_percent(pos, sym, evidx);
+		if (rbpos->percent < 0.01) {
+			RB_CLEAR_NODE(&rbpos->rb_node);
+			continue;
+		}
+		objdump__insert_line(&browser->entries, rbpos);
+	}
+	pthread_mutex_unlock(&notes->lock);
+
+	browser->curr_hot = rb_last(&browser->entries);
+}
+
+static int annotate_browser__run(struct annotate_browser *self, int evidx,
+				 int refresh)
+{
+	struct rb_node *nd = NULL;
+	struct symbol *sym = self->b.priv;
+	/*
+	 * RIGHT To allow builtin-annotate to cycle thru multiple symbols by
+	 * examining the exit key for this function.
+	 */
+	int exit_keys[] = { 'H', NEWT_KEY_TAB, NEWT_KEY_UNTAB,
+			    NEWT_KEY_RIGHT, 0 };
+	int key;
+
+	if (ui_browser__show(&self->b, sym->name,
+			     "<-, -> or ESC: exit, TAB/shift+TAB: "
+			     "cycle hottest lines, H: Hottest") < 0)
+		return -1;
+
+	ui_browser__add_exit_keys(&self->b, exit_keys);
+	annotate_browser__calc_percent(self, evidx);
+
+	if (self->curr_hot)
+		annotate_browser__set_top(self, self->curr_hot);
+
+	nd = self->curr_hot;
+
+	if (refresh != 0)
+		newtFormSetTimer(self->b.form, refresh);
+
+	while (1) {
+		key = ui_browser__run(&self->b);
+
+		if (refresh != 0) {
+			annotate_browser__calc_percent(self, evidx);
+			/*
+			 * Current line focus got out of the list of most active
+			 * lines, NULL it so that if TAB|UNTAB is pressed, we
+			 * move to curr_hot (current hottest line).
+			 */
+			if (nd != NULL && RB_EMPTY_NODE(nd))
+				nd = NULL;
+		}
+
+		switch (key) {
+		case -1:
+			/*
+ 			 * FIXME we need to check if it was
+ 			 * es.reason == NEWT_EXIT_TIMER
+ 			 */
+			if (refresh != 0)
+				symbol__annotate_decay_histogram(sym, evidx);
+			continue;
+		case NEWT_KEY_TAB:
+			if (nd != NULL) {
+				nd = rb_prev(nd);
+				if (nd == NULL)
+					nd = rb_last(&self->entries);
+			} else
+				nd = self->curr_hot;
+			break;
+		case NEWT_KEY_UNTAB:
+			if (nd != NULL)
+				nd = rb_next(nd);
+				if (nd == NULL)
+					nd = rb_first(&self->entries);
+			else
+				nd = self->curr_hot;
+			break;
+		case 'H':
+			nd = self->curr_hot;
+			break;
+		default:
+			goto out;
+		}
+
+		if (nd != NULL)
+			annotate_browser__set_top(self, nd);
+	}
+out:
+	ui_browser__hide(&self->b);
+	return key;
+}
+
+int hist_entry__tui_annotate(struct hist_entry *he, int evidx)
+{
+	return symbol__tui_annotate(he->ms.sym, he->ms.map, evidx, 0);
+}
+
+int symbol__tui_annotate(struct symbol *sym, struct map *map, int evidx,
+			 int refresh)
+{
+	struct objdump_line *pos, *n;
+	struct annotation *notes;
+	struct annotate_browser browser = {
+		.b = {
+			.refresh = ui_browser__list_head_refresh,
+			.seek	 = ui_browser__list_head_seek,
+			.write	 = annotate_browser__write,
+			.priv	 = sym,
+		},
+	};
+	int ret;
+
+	if (sym == NULL)
+		return -1;
+
+	if (map->dso->annotate_warned)
+		return -1;
+
+	if (symbol__annotate(sym, map, sizeof(struct objdump_line_rb_node)) < 0) {
+		ui__error_window(ui_helpline__last_msg);
+		return -1;
+	}
+
+	ui_helpline__push("Press <- or ESC to exit");
+
+	notes = symbol__annotation(sym);
+
+	list_for_each_entry(pos, &notes->src->source, node) {
+		struct objdump_line_rb_node *rbpos;
+		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++;
+	}
+
+	browser.b.entries = &notes->src->source,
+	browser.b.width += 18; /* Percentage */
+	ret = annotate_browser__run(&browser, evidx, refresh);
+	list_for_each_entry_safe(pos, n, &notes->src->source, node) {
+		list_del(&pos->node);
+		objdump_line__free(pos);
+	}
+	return ret;
+}