perf record: Don't call newt functions when not initialized

When processing events we want to give visual feedback to the user when
using the newt browser, so there are ui_progress calls in
__perf_session__process_events, but those should check if newt is being
used.

Reported-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Tested-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>,
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <20100609123530.GB9471@ghostprotocols.net>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/util/newt.c b/tools/perf/util/newt.c
index cf182ca..7537ca1 100644 (file)
--- a/tools/perf/util/newt.c
+++ b/tools/perf/util/newt.c
@@ -43,6 +43,9 @@ struct ui_progress *ui_progress__new(const char *title, u64 total)
 
        if (self != NULL) {
                int cols;
+
+               if (use_browser <= 0)   
+                       return self;
                newtGetScreenSize(&cols, NULL);
                cols -= 4;
                newtCenteredWindow(cols, 1, title);
@@ -67,14 +70,22 @@ out_free_self:
 
 void ui_progress__update(struct ui_progress *self, u64 curr)
 {
+       /*
+        * FIXME: We should have a per UI backend way of showing progress,
+        * stdio will just show a percentage as NN%, etc.
+        */
+       if (use_browser <= 0)
+               return;
        newtScaleSet(self->scale, curr);
        newtRefresh();
 }
 
 void ui_progress__delete(struct ui_progress *self)
 {
-       newtFormDestroy(self->form);
-       newtPopWindow();
+       if (use_browser > 0) {
+               newtFormDestroy(self->form);
+               newtPopWindow();
+       }
        free(self);
 }