Current File : //usr/share/virt-manager/virtinst/domainnumatune.py
#
# Copyright 2010, 2013 Red Hat, Inc.
# Cole Robinson <crobinso@redhat.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
# MA 02110-1301 USA.
import re
from .xmlbuilder import XMLBuilder, XMLProperty
def get_phy_cpus(conn):
"""
Get number of physical CPUs.
"""
hostinfo = conn.getInfo()
pcpus = hostinfo[4] * hostinfo[5] * hostinfo[6] * hostinfo[7]
return pcpus
class DomainNumatune(XMLBuilder):
"""
Class for generating <numatune> XML
"""
@staticmethod
def validate_cpuset(conn, val):
if val is None or val == "":
return
if not isinstance(val, str) or len(val) == 0:
raise ValueError(_("cpuset must be string"))
if re.match("^[0-9,-^]*$", val) is None:
raise ValueError(_("cpuset can only contain numeric, ',', '^', or "
"'-' characters"))
pcpus = get_phy_cpus(conn)
for c in val.split(','):
# Redundant commas
if not c:
continue
if "-" in c:
(x, y) = c.split('-', 1)
x = int(x)
y = int(y)
if x > y:
raise ValueError(_("cpuset contains invalid format."))
if x >= pcpus or y >= pcpus:
raise ValueError(_("cpuset's pCPU numbers must be less "
"than pCPUs."))
else:
if c.startswith("^"):
c = c[1:]
c = int(c)
if c >= pcpus:
raise ValueError(_("cpuset's pCPU numbers must be less "
"than pCPUs."))
@staticmethod
def cpuset_str_to_tuple(conn, cpuset):
DomainNumatune.validate_cpuset(conn, cpuset)
pinlist = [False] * get_phy_cpus(conn)
entries = cpuset.split(",")
for e in entries:
series = e.split("-", 1)
if len(series) == 1:
pinlist[int(series[0])] = True
continue
start = int(series[0])
end = int(series[1])
for i in range(start, end + 1):
pinlist[i] = True
return tuple(pinlist)
MEMORY_MODES = ["interleave", "strict", "preferred"]
_XML_ROOT_NAME = "numatune"
_XML_PROP_ORDER = ["memory_mode", "memory_nodeset"]
memory_nodeset = XMLProperty("./memory/@nodeset")
memory_mode = XMLProperty("./memory/@mode")
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