1 files changed, 606 insertions, 0 deletions

diff --git a/tools/perf/ui/browser.c b/tools/perf/ui/browser.c
new file mode 100644
index 000000000000..a1b140cf75ac
--- /dev/null
+++ b/tools/perf/ui/browser.c
@@ -0,0 +1,606 @@
+#include "../util.h"
+#include "../cache.h"
+#include "../../perf.h"
+#include "libslang.h"
+#include <newt.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 *self,
+				   double percent, bool current)
+{
+	 int color = ui_browser__percent_color(self, percent, current);
+	 ui_browser__set_color(self, color);
+}
+
+void ui_browser__gotorc(struct ui_browser *self, int y, int x)
+{
+	SLsmg_gotorc(self->y + y, self->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 *self, off_t offset, int whence)
+{
+	struct list_head *head = self->entries;
+	struct list_head *pos;
+
+	if (self->nr_entries == 0)
+		return;
+
+	switch (whence) {
+	case SEEK_SET:
+		pos = ui_browser__list_head_filter_entries(self, head->next);
+		break;
+	case SEEK_CUR:
+		pos = self->top;
+		break;
+	case SEEK_END:
+		pos = ui_browser__list_head_filter_prev_entries(self, head->prev);
+		break;
+	default:
+		return;
+	}
+
+	assert(pos != NULL);
+
+	if (offset > 0) {
+		while (offset-- != 0)
+			pos = ui_browser__list_head_filter_entries(self, pos->next);
+	} else {
+		while (offset++ != 0)
+			pos = ui_browser__list_head_filter_prev_entries(self, pos->prev);
+	}
+
+	self->top = pos;
+}
+
+void ui_browser__rb_tree_seek(struct ui_browser *self, off_t offset, int whence)
+{
+	struct rb_root *root = self->entries;
+	struct rb_node *nd;
+
+	switch (whence) {
+	case SEEK_SET:
+		nd = rb_first(root);
+		break;
+	case SEEK_CUR:
+		nd = self->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);
+	}
+
+	self->top = nd;
+}
+
+unsigned int ui_browser__rb_tree_refresh(struct ui_browser *self)
+{
+	struct rb_node *nd;
+	int row = 0;
+
+	if (self->top == NULL)
+                self->top = rb_first(self->entries);
+
+	nd = self->top;
+
+	while (nd != NULL) {
+		ui_browser__gotorc(self, row, 0);
+		self->write(self, nd, row);
+		if (++row == self->height)
+			break;
+		nd = rb_next(nd);
+	}
+
+	return row;
+}
+
+bool ui_browser__is_current_entry(struct ui_browser *self, unsigned row)
+{
+	return self->top_idx + row == self->index;
+}
+
+void ui_browser__refresh_dimensions(struct ui_browser *self)
+{
+	self->width = SLtt_Screen_Cols - 1;
+	self->height = SLtt_Screen_Rows - 2;
+	self->y = 1;
+	self->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 *self)
+{
+	self->index = self->top_idx = 0;
+	self->seek(self, 0, SEEK_SET);
+}
+
+void __ui_browser__show_title(struct ui_browser *browser, const char *title)
+{
+	SLsmg_gotorc(0, 0);
+	ui_browser__set_color(browser, NEWT_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 *self, const char *title,
+		     const char *helpline, ...)
+{
+	int err;
+	va_list ap;
+
+	ui_browser__refresh_dimensions(self);
+
+	pthread_mutex_lock(&ui__lock);
+	__ui_browser__show_title(self, title);
+
+	self->title = title;
+	free(self->helpline);
+	self->helpline = NULL;
+
+	va_start(ap, helpline);
+	err = vasprintf(&self->helpline, helpline, ap);
+	va_end(ap);
+	if (err > 0)
+		ui_helpline__push(self->helpline);
+	pthread_mutex_unlock(&ui__lock);
+	return err ? 0 : -1;
+}
+
+void ui_browser__hide(struct ui_browser *browser __used)
+{
+	pthread_mutex_lock(&ui__lock);
+	ui_helpline__pop();
+	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 = browser->y - 1;
+
+	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 *self, int delay_secs)
+{
+	int err, key;
+
+	while (1) {
+		off_t offset;
+
+		pthread_mutex_lock(&ui__lock);
+		err = __ui_browser__refresh(self);
+		SLsmg_refresh();
+		pthread_mutex_unlock(&ui__lock);
+		if (err < 0)
+			break;
+
+		key = ui__getch(delay_secs);
+
+		if (key == K_RESIZE) {
+			ui__refresh_dimensions(false);
+			ui_browser__refresh_dimensions(self);
+			__ui_browser__show_title(self, self->title);
+			ui_helpline__puts(self->helpline);
+			continue;
+		}
+
+		if (self->use_navkeypressed && !self->navkeypressed) {
+			if (key == K_DOWN || key == K_UP ||
+			    key == K_PGDN || key == K_PGUP ||
+			    key == K_HOME || key == K_END ||
+			    key == ' ') {
+				self->navkeypressed = true;
+				continue;
+			} else
+				return key;
+		}
+
+		switch (key) {
+		case K_DOWN:
+			if (self->index == self->nr_entries - 1)
+				break;
+			++self->index;
+			if (self->index == self->top_idx + self->height) {
+				++self->top_idx;
+				self->seek(self, +1, SEEK_CUR);
+			}
+			break;
+		case K_UP:
+			if (self->index == 0)
+				break;
+			--self->index;
+			if (self->index < self->top_idx) {
+				--self->top_idx;
+				self->seek(self, -1, SEEK_CUR);
+			}
+			break;
+		case K_PGDN:
+		case ' ':
+			if (self->top_idx + self->height > self->nr_entries - 1)
+				break;
+
+			offset = self->height;
+			if (self->index + offset > self->nr_entries - 1)
+				offset = self->nr_entries - 1 - self->index;
+			self->index += offset;
+			self->top_idx += offset;
+			self->seek(self, +offset, SEEK_CUR);
+			break;
+		case K_PGUP:
+			if (self->top_idx == 0)
+				break;
+
+			if (self->top_idx < self->height)
+				offset = self->top_idx;
+			else
+				offset = self->height;
+
+			self->index -= offset;
+			self->top_idx -= offset;
+			self->seek(self, -offset, SEEK_CUR);
+			break;
+		case K_HOME:
+			ui_browser__reset_index(self);
+			break;
+		case K_END:
+			offset = self->height - 1;
+			if (offset >= self->nr_entries)
+				offset = self->nr_entries - 1;
+
+			self->index = self->nr_entries - 1;
+			self->top_idx = self->index - offset;
+			self->seek(self, -offset, SEEK_END);
+			break;
+		default:
+			return key;
+		}
+	}
+	return -1;
+}
+
+unsigned int ui_browser__list_head_refresh(struct ui_browser *self)
+{
+	struct list_head *pos;
+	struct list_head *head = self->entries;
+	int row = 0;
+
+	if (self->top == NULL || self->top == self->entries)
+                self->top = ui_browser__list_head_filter_entries(self, head->next);
+
+	pos = self->top;
+
+	list_for_each_from(pos, head) {
+		if (!self->filter || !self->filter(self, pos)) {
+			ui_browser__gotorc(self, row, 0);
+			self->write(self, pos, row);
+			if (++row == self->height)
+				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",
+	},
+	{
+		.name = NULL,
+	}
+};
+
+
+static int ui_browser__color_config(const char *var, const char *value,
+				    void *data __used)
+{
+	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 + 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->height)
+				break;
+		}
+
+		++idx;
+		++pos;
+	}
+
+	return row;
+}
+
+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);
+	}
+}