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: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index 0bc67900352ce20b16af7b4d37f23970d49cb473..f93095ffaab0932590e032225bd9aba4103854ab 100644 (file)
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -850,6 +850,33 @@ print_entries:
        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)
 {

diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h
index 92962b2f579b25145cc7ce0aeb6c9fe26ccbeac2..65a48db46a29f0b0766f43474271f6e935b3c952 100644 (file)
--- a/tools/perf/util/hist.h
+++ b/tools/perf/util/hist.h
@@ -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 */