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tools/kvm_stat: print error messages on faulty pid filter input

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Print helpful messages in case users enter invalid input or invalid pids in
the interactive pid filter dialogue.

Signed-off-by: Stefan Raspl <raspl@linux.vnet.ibm.com>
Reviewed-by: Marc Hartmayer <mhartmay@linux.vnet.ibm.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
This commit is contained in:
Stefan Raspl 2017-03-10 13:40:10 +01:00 committed by Paolo Bonzini
parent be03ea3b77
commit 0152c20f04
1 changed files with 4 additions and 0 deletions
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4
tools/kvm/kvm_stat/kvm_stat
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@ -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):