Print helpful messages in case users enter invalid input or invalid pids in
the interactive pid filter dialogue.
Signed-off-by: Stefan Raspl <raspl@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Marc Hartmayer <mhartmay@xxxxxxxxxxxxxxxxxx>
---
tools/kvm/kvm_stat/kvm_stat | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/tools/kvm/kvm_stat/kvm_stat b/tools/kvm/kvm_stat/kvm_stat
index 9e9eb98..ced0cb9 100755
--- a/tools/kvm/kvm_stat/kvm_stat
+++ b/tools/kvm/kvm_stat/kvm_stat
@@ -976,6 +976,7 @@ class Tui(object):
Asks for a pid until a valid pid or 0 has been entered.
"""
+ msg = ''
while True:
self.screen.erase()
self.screen.addstr(0, 0,
@@ -984,6 +985,7 @@ class Tui(object):
self.screen.addstr(1, 0,
'This might limit the shown data to the trace '
'statistics.')
+ self.screen.addstr(5, 0, msg)
curses.echo()
self.screen.addstr(3, 0, "Pid [0 or pid]: ")
@@ -995,6 +997,7 @@ class Tui(object):
pid = int(pid)
if pid != 0 and not os.path.isdir(os.path.join('/proc/',
str(pid))):
+ msg = '"' + str(pid) + '": Not a running process'
continue
else:
pid = 0
@@ -1003,6 +1006,7 @@ class Tui(object):
break
except ValueError:
+ msg = '"' + str(pid) + '": Not a valid pid'
continue
def show_stats(self):
--
2.8.4
