tools/perf/ui/browsers/map.c

Source file repositories/reference/linux-study-clean/tools/perf/ui/browsers/map.c

File Facts

System
Linux kernel
Corpus path
tools/perf/ui/browsers/map.c
Extension
.c
Size
3480 bytes
Lines
137
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: implementation source
Status
source implementation candidate

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

struct map_browser {
	struct ui_browser b;
	struct map	  *map;
	u8		  addrlen;
};

static void map_browser__write(struct ui_browser *browser, void *nd, int row)
{
	struct symbol *sym = rb_entry(nd, struct symbol, rb_node);
	struct map_browser *mb = container_of(browser, struct map_browser, b);
	bool current_entry = ui_browser__is_current_entry(browser, row);
	int width;

	ui_browser__set_percent_color(browser, 0, current_entry);
	ui_browser__printf(browser, "%*" PRIx64 " %*" PRIx64 " %c ",
			   mb->addrlen, sym->start, mb->addrlen, sym->end,
			   sym->binding == STB_GLOBAL ? 'g' :
				sym->binding == STB_LOCAL  ? 'l' : 'w');
	width = browser->width - ((mb->addrlen * 2) + 4);
	if (width > 0)
		ui_browser__write_nstring(browser, sym->name, width);
}

/* FIXME uber-kludgy, see comment on cmd_report... */
static u32 *symbol__browser_index(struct symbol *browser)
{
	return ((void *)browser) - sizeof(struct rb_node) - sizeof(u32);
}

static int map_browser__search(struct map_browser *browser)
{
	char target[512];
	struct symbol *sym;
	int err = ui_browser__input_window("Search by name/addr",
					   "Prefix with 0x to search by address",
					   target, "ENTER: OK, ESC: Cancel", 0);
	if (err != K_ENTER)
		return -1;

	if (target[0] == '0' && tolower(target[1]) == 'x') {
		u64 addr = strtoull(target, NULL, 16);
		sym = map__find_symbol(browser->map, addr);
	} else
		sym = map__find_symbol_by_name(browser->map, target);

	if (sym != NULL) {
		u32 *idx = symbol__browser_index(sym);

		browser->b.top = &sym->rb_node;
		browser->b.index = browser->b.top_idx = *idx;
	} else
		ui_helpline__fpush("%s not found!", target);

	return 0;
}

static int map_browser__run(struct map_browser *browser)
{
	int key;

	if (ui_browser__show(&browser->b, dso__long_name(map__dso(browser->map)),
			     "Press ESC to exit, %s / to search",
			     verbose > 0 ? "" : "restart with -v to use") < 0)
		return -1;

	while (1) {
		key = ui_browser__run(&browser->b, 0);

		switch (key) {
		case '/':
			if (verbose > 0)
				map_browser__search(browser);
			/* fall thru */
		default:
			ui_browser__warn_unhandled_hotkey(&browser->b, key, 0, NULL);
			continue;
                case K_LEFT:
                case K_ESC:
                case 'q':
                case CTRL('c'):
                        goto out;
		}
	}
out:
	ui_browser__hide(&browser->b);
	return key;
}

int map__browse(struct map *map)
{

Annotation

Implementation Notes