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tools/kvm_stat: indicate dead guests as such 

For destroyed guests, kvm_stat essentially freezes with the last data
displayed. This is acceptable for users, in case they want to inspect the
final data. But it looks a bit irritating. Therefore, detect this situation
and display a respective indicator in the header.

Signed-off-by: Stefan Raspl <raspl@linux.ibm.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
This commit is contained in:
Stefan Raspl 2018-08-24 14:04:00 +02:00 committed by Radim Krčmář
parent 29c39f38e4
commit 404517e408
1 changed files with 9 additions and 3 deletions
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12
tools/kvm/kvm_stat/kvm_stat
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@ -1108,10 +1108,10 @@ class Tui(object):
if len(gname) > MAX_GUEST_NAME_LEN
else gname))
if pid > 0:
self.screen.addstr(0, 0, 'kvm statistics - pid {0} {1}'
.format(pid, gname), curses.A_BOLD)
self._headline = 'kvm statistics - pid {0} {1}'.format(pid, gname)
else:
self.screen.addstr(0, 0, 'kvm statistics - summary', curses.A_BOLD)
self._headline = 'kvm statistics - summary'
self.screen.addstr(0, 0, self._headline, curses.A_BOLD)
if self.stats.fields_filter:
regex = self.stats.fields_filter
if len(regex) > MAX_REGEX_LEN:
@ -1170,6 +1170,7 @@ class Tui(object):
return sorted_items
if not self._is_running_guest(self.stats.pid_filter):
self._display_guest_dead()
# leave final data on screen
return
row = 3
@ -1228,6 +1229,11 @@ class Tui(object):
('Total', total, tavg), curses.A_BOLD)
self.screen.refresh()
def _display_guest_dead(self):
marker = ' Guest is DEAD '
y = min(len(self._headline), 80 - len(marker))
self.screen.addstr(0, y, marker, curses.A_BLINK | curses.A_STANDOUT)
def _show_msg(self, text):
"""Display message centered text and exit on key press"""
hint = 'Press any key to continue'