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