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tools/kvm_stat: Add Python 3 support to kvm_stat

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Make kvm_stat support Python 3 by changing the use of "print" to a
function rather than a statement, switching from "iteritems" and
"iterkeys" (removed in Python 3) to "items" and "keys" respectively,
and decoding bytes to strings when dealing with text.

With this change, kvm_stat is usable with Python 2.6 and greater.

Signed-off-by: Jeremy Cline <jeremy@jcline.org>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
This commit is contained in:
Jeremy Cline 2017-10-04 03:08:11 +00:00 committed by Paolo Bonzini
parent 0f107682cb
commit 9cc5fbbb8c
1 changed files with 17 additions and 13 deletions
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30
tools/kvm/kvm_stat/kvm_stat
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@ -19,9 +19,11 @@ Three different ways of output formatting are available:
The data is sampled from the KVM's debugfs entries and its perf events.
"""
from __future__ import print_function
import curses
import sys
import locale
import os
import time
import optparse
@ -225,6 +227,8 @@ IOCTL_NUMBERS = {
'RESET': 0x00002403,
}
ENCODING = locale.getpreferredencoding(False)
class Arch(object):
"""Encapsulates global architecture specific data.
@ -666,7 +670,7 @@ class TracepointProvider(Provider):
"""Returns 'event name: current value' for all enabled events."""
ret = defaultdict(int)
for group in self.group_leaders:
for name, val in group.read().iteritems():
for name, val in group.read().items():
if name in self._fields:
ret[name] += val
return ret
@ -955,7 +959,7 @@ class Tui(object):
except:
raise Exception
for line in child.stdout:
line = line.lstrip().split(' ', 1)
line = line.decode(ENCODING).lstrip().split(' ', 1)
# perform a sanity check before calling the more expensive
# function to possibly extract the guest name
if ' -name ' in line[1]:
@ -1005,7 +1009,7 @@ class Tui(object):
name = ''
try:
line = open('/proc/{}/cmdline'
.format(pid), 'rb').read().split('\0')
.format(pid), 'r').read().split('\0')
parms = line[line.index('-name') + 1].split(',')
while '' in parms:
# commas are escaped (i.e. ',,'), hence e.g. 'foo,bar' results
@ -1170,7 +1174,7 @@ class Tui(object):
.format(self.stats.fields_filter))
self.screen.addstr(3, 0, "New regex: ")
curses.echo()
regex = self.screen.getstr()
regex = self.screen.getstr().decode(ENCODING)
curses.noecho()
if len(regex) == 0:
self.stats.fields_filter = DEFAULT_REGEX
@ -1204,7 +1208,7 @@ class Tui(object):
curses.echo()
self.screen.addstr(3, 0, "Pid [0 or pid]: ")
pid = self.screen.getstr()
pid = self.screen.getstr().decode(ENCODING)
curses.noecho()
try:
@ -1233,7 +1237,7 @@ class Tui(object):
self.screen.addstr(2, 0, 'Change delay from %.1fs to ' %
self._delay_regular)
curses.echo()
val = self.screen.getstr()
val = self.screen.getstr().decode(ENCODING)
curses.noecho()
try:
@ -1273,7 +1277,7 @@ class Tui(object):
self.print_all_gnames(7)
curses.echo()
self.screen.addstr(3, 0, "Guest [ENTER or guest]: ")
gname = self.screen.getstr()
gname = self.screen.getstr().decode(ENCODING)
curses.noecho()
if not gname:
@ -1369,25 +1373,25 @@ def batch(stats):
s = stats.get()
for key in sorted(s.keys()):
values = s[key]
print '%-42s%10d%10d' % (key, values[0], values[1])
print('%-42s%10d%10d' % (key, values[0], values[1]))
except KeyboardInterrupt:
pass
def log(stats):
"""Prints statistics as reiterating key block, multiple value blocks."""
keys = sorted(stats.get().iterkeys())
keys = sorted(stats.get().keys())
def banner():
for k in keys:
print '%s' % k,
print
print(k, end=' ')
print()
def statline():
s = stats.get()
for k in keys:
print ' %9d' % s[k][1],
print
print(' %9d' % s[k][1], end=' ')
print()
line = 0
banner_repeat = 20
while True: