From patchwork Tue Jan 26 13:47:01 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paolo Bonzini X-Patchwork-Id: 573286 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 0052C1402EC for ; Wed, 27 Jan 2016 01:03:30 +1100 (AEDT) Received: from localhost ([::1]:44057 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aO4DQ-0006bB-3w for incoming@patchwork.ozlabs.org; Tue, 26 Jan 2016 09:03:28 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:35213) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aO3yd-0000V0-KR for qemu-devel@nongnu.org; Tue, 26 Jan 2016 08:48:12 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aO3yc-00048q-QF for qemu-devel@nongnu.org; Tue, 26 Jan 2016 08:48:11 -0500 Received: from mx1.redhat.com ([209.132.183.28]:36133) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aO3yc-00048U-Kh for qemu-devel@nongnu.org; Tue, 26 Jan 2016 08:48:10 -0500 Received: from int-mx10.intmail.prod.int.phx2.redhat.com (int-mx10.intmail.prod.int.phx2.redhat.com [10.5.11.23]) by mx1.redhat.com (Postfix) with ESMTPS id 3E91D3F3AA; Tue, 26 Jan 2016 13:48:10 +0000 (UTC) Received: from 640k.localdomain.com (ovpn-112-67.ams2.redhat.com [10.36.112.67]) by int-mx10.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u0QDlNqe028272; Tue, 26 Jan 2016 08:48:09 -0500 From: Paolo Bonzini To: qemu-devel@nongnu.org Date: Tue, 26 Jan 2016 14:47:01 +0100 Message-Id: <1453816041-36362-30-git-send-email-pbonzini@redhat.com> In-Reply-To: <1453816041-36362-1-git-send-email-pbonzini@redhat.com> References: <1453816041-36362-1-git-send-email-pbonzini@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.23 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 209.132.183.28 Cc: Janosch Frank Subject: [Qemu-devel] [PULL 29/49] scripts/kvm/kvm_stat: Cleanup of Groups class X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org From: Janosch Frank 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 Message-Id: <1452525484-32309-24-git-send-email-frankja@linux.vnet.ibm.com> Signed-off-by: Paolo Bonzini --- scripts/kvm/kvm_stat | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/scripts/kvm/kvm_stat b/scripts/kvm/kvm_stat index 203873e..91054e5 100755 --- a/scripts/kvm/kvm_stat +++ b/scripts/kvm/kvm_stat @@ -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):