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scripts/kvm/kvm_stat: Cleanup of Groups class

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Introduced separating newlines for readability and removed special
treatment/variable of the group leader. Renamed fmt to read_format.

The group leader's file descriptor will not be turned into a file
object anymore, instead os.read is used to read from the descriptor.

Signed-off-by: Janosch Frank <frankja@linux.vnet.ibm.com>
Message-Id: <1452525484-32309-24-git-send-email-frankja@linux.vnet.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Janosch Frank 2016-01-11 16:17:53 +01:00 committed by Paolo Bonzini
parent e75a36abb4
commit fc9fdeebd5
1 changed files with 5 additions and 5 deletions
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scripts/kvm/kvm_stat
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@ -341,20 +341,20 @@ PATH_DEBUGFS_KVM = '/sys/kernel/debug/kvm'
class Group(object):
def __init__(self, cpu):
self.events = []
self.group_leader = None
self.cpu = cpu
def add_event(self, name, event_set, tracepoint, tracefilter=None):
self.events.append(Event(group=self,
name=name, event_set=event_set,
tracepoint=tracepoint,
tracefilter=tracefilter))
if len(self.events) == 1:
self.file = os.fdopen(self.events[0].fd)
def read(self):
length = 8 * (1 + len(self.events))
fmt = 'xxxxxxxx' + 'q' * len(self.events)
read_format = 'xxxxxxxx' + 'q' * len(self.events)
return dict(zip([event.name for event in self.events],
struct.unpack(fmt, self.file.read(length))))
struct.unpack(read_format,
os.read(self.events[0].fd, length))))
class Event(object):
def __init__(self, group, name, event_set, tracepoint, tracefilter=None):