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authorArnaldo Carvalho de Melo <acme@redhat.com>2011-03-04 21:19:21 -0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2011-03-06 13:10:05 -0300
commit60098917c06d154d06ce030c125266eab9e60768 (patch)
treecc4f203256504ffd11696418f1ccbabd590ba8f9 /tools/perf/util/ui/browsers/hists.c
parentperf hists: Remove needless global col lenght calcs (diff)
downloadlinux-dev-60098917c06d154d06ce030c125266eab9e60768.tar.xz
linux-dev-60098917c06d154d06ce030c125266eab9e60768.zip
perf hists browser: Handle browsing empty hists tree
Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to '')
-rw-r--r--tools/perf/util/ui/browsers/hists.c22
1 files changed, 15 insertions, 7 deletions
diff --git a/tools/perf/util/ui/browsers/hists.c b/tools/perf/util/ui/browsers/hists.c
index c27ab35042f1..c98e6f81d285 100644
--- a/tools/perf/util/ui/browsers/hists.c
+++ b/tools/perf/util/ui/browsers/hists.c
@@ -639,6 +639,9 @@ static void ui_browser__hists_seek(struct ui_browser *self,
struct rb_node *nd;
bool first = true;
+ if (self->nr_entries == 0)
+ return;
+
switch (whence) {
case SEEK_SET:
nd = hists__filter_entries(rb_first(self->entries));
@@ -820,8 +823,8 @@ int hists__browse(struct hists *self, const char *helpline,
hists__browser_title(self, msg, sizeof(msg), ev_name,
dso_filter, thread_filter);
while (1) {
- const struct thread *thread;
- const struct dso *dso;
+ const struct thread *thread = NULL;
+ const struct dso *dso = NULL;
char *options[16];
int nr_options = 0, choice = 0, i,
annotate = -2, zoom_dso = -2, zoom_thread = -2,
@@ -829,8 +832,10 @@ int hists__browse(struct hists *self, const char *helpline,
key = hist_browser__run(browser, msg);
- thread = hist_browser__selected_thread(browser);
- dso = browser->selection->map ? browser->selection->map->dso : NULL;
+ if (browser->he_selection != NULL) {
+ thread = hist_browser__selected_thread(browser);
+ dso = browser->selection->map ? browser->selection->map->dso : NULL;
+ }
switch (key) {
case NEWT_KEY_TAB:
@@ -841,7 +846,8 @@ int hists__browse(struct hists *self, const char *helpline,
*/
goto out_free_stack;
case 'a':
- if (browser->selection->map == NULL &&
+ if (browser->selection == NULL ||
+ browser->selection->map == NULL ||
browser->selection->map->dso->annotate_warned)
continue;
goto do_annotate;
@@ -887,7 +893,8 @@ int hists__browse(struct hists *self, const char *helpline,
goto out_free_stack;
}
- if (browser->selection->sym != NULL &&
+ if (browser->selection != NULL &&
+ browser->selection->sym != NULL &&
!browser->selection->map->dso->annotate_warned &&
asprintf(&options[nr_options], "Annotate %s",
browser->selection->sym->name) > 0)
@@ -906,7 +913,8 @@ int hists__browse(struct hists *self, const char *helpline,
(dso->kernel ? "the Kernel" : dso->short_name)) > 0)
zoom_dso = nr_options++;
- if (browser->selection->map != NULL &&
+ if (browser->selection != NULL &&
+ browser->selection->map != NULL &&
asprintf(&options[nr_options], "Browse map details") > 0)
browse_map = nr_options++;