perf hist: Introduce routine to measure lenght of formatted entry

Will be used to figure out the window width needed in the new tree
widget.

Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
LKML-Reference: <new-submission>
Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
上级 b61b55ed
......@@ -850,6 +850,33 @@ size_t hists__fprintf(struct hists *self, struct hists *pair,
return ret;
}
/*
* See hists__fprintf to match the column widths
*/
unsigned int hists__sort_list_width(struct hists *self)
{
struct sort_entry *se;
int ret = 9; /* total % */
if (symbol_conf.show_cpu_utilization) {
ret += 7; /* count_sys % */
ret += 6; /* count_us % */
if (perf_guest) {
ret += 13; /* count_guest_sys % */
ret += 12; /* count_guest_us % */
}
}
if (symbol_conf.show_nr_samples)
ret += 11;
list_for_each_entry(se, &hist_entry__sort_list, list)
if (!se->elide)
ret += 2 + hists__col_len(self, se->se_width_idx);
return ret;
}
static void hists__remove_entry_filter(struct hists *self, struct hist_entry *h,
enum hist_filter filter)
{
......
......@@ -141,4 +141,7 @@ int hist_entry__tui_annotate(struct hist_entry *self);
int hists__tui_browse_tree(struct rb_root *self, const char *help);
#endif
unsigned int hists__sort_list_width(struct hists *self);
#endif /* __PERF_HIST_H */
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