tools/perf/ui/browsers/hists.c

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

File Facts

System
Linux kernel
Corpus path
tools/perf/ui/browsers/hists.c
Extension
.c
Size
97510 bytes
Lines
3784
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 callchain_print_arg {
	/* for hists browser */
	off_t	row_offset;
	bool	is_current_entry;

	/* for file dump */
	FILE	*fp;
	int	printed;
};

typedef void (*print_callchain_entry_fn)(struct hist_browser *browser,
					 struct callchain_list *chain,
					 const char *str, int offset,
					 unsigned short row,
					 struct callchain_print_arg *arg);

static void hist_browser__show_callchain_entry(struct hist_browser *browser,
					       struct callchain_list *chain,
					       const char *str, int offset,
					       unsigned short row,
					       struct callchain_print_arg *arg)
{
	int color, width;
	char folded_sign = callchain_list__folded(chain);
	bool show_annotated = browser->show_dso && chain->ms.sym && symbol__annotation(chain->ms.sym)->src;

	color = HE_COLORSET_NORMAL;
	width = browser->b.width - (offset + 2);
	if (ui_browser__is_current_entry(&browser->b, row)) {
		browser->selection = &chain->ms;
		color = HE_COLORSET_SELECTED;
		arg->is_current_entry = true;
	}

	ui_browser__set_color(&browser->b, color);
	ui_browser__gotorc(&browser->b, row, 0);
	ui_browser__write_nstring(&browser->b, " ", offset);
	ui_browser__printf(&browser->b, "%c", folded_sign);
	ui_browser__write_graph(&browser->b, show_annotated ? SLSMG_RARROW_CHAR : ' ');
	ui_browser__write_nstring(&browser->b, str, width);
}

static void hist_browser__fprintf_callchain_entry(struct hist_browser *b __maybe_unused,
						  struct callchain_list *chain,
						  const char *str, int offset,
						  unsigned short row __maybe_unused,
						  struct callchain_print_arg *arg)
{
	char folded_sign = callchain_list__folded(chain);

	arg->printed += fprintf(arg->fp, "%*s%c %s\n", offset, " ",
				folded_sign, str);
}

typedef bool (*check_output_full_fn)(struct hist_browser *browser,
				     unsigned short row);

static bool hist_browser__check_output_full(struct hist_browser *browser,
					    unsigned short row)
{
	return browser->b.rows == row;
}

static bool hist_browser__check_dump_full(struct hist_browser *browser __maybe_unused,
					  unsigned short row __maybe_unused)
{
	return false;
}

#define LEVEL_OFFSET_STEP 3

static int hist_browser__show_callchain_list(struct hist_browser *browser,
					     struct callchain_node *node,
					     struct callchain_list *chain,
					     unsigned short row, u64 total,
					     bool need_percent, int offset,
					     print_callchain_entry_fn print,
					     struct callchain_print_arg *arg)
{
	char bf[1024], *alloc_str;
	char buf[64], *alloc_str2;
	const char *str;
	int ret = 1;

	if (arg->row_offset != 0) {
		arg->row_offset--;
		return 0;
	}

	alloc_str = NULL;

Annotation

Implementation Notes