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# Copyright (C) 2004 Mike Wray <mike.wray@hp.com>
"""Handler for node operations.
Has some persistent state:
- logs
- notification urls
"""
import os
import xen.ext.xc
class XendNode:
def __init__(self):
self.xc = xen.ext.xc.new()
def shutdown(self):
return 0
def reboot(self):
return 0
def notify(self, uri):
return 0
def cpu_bvt_slice_set(self, slice):
ret = 0
#ret = self.xc.bvtsched_global_set(ctx_allow=slice)
return ret
def cpu_bvt_slice_get(self, slice):
ret = 0
#ret = self.xc.bvtsched_global_get()
return ret
def cpu_rrobin_slice_set(self, slice):
ret = 0
#ret = self.xc.rrobin_global_set(slice)
return ret
def info(self):
return self.nodeinfo() + self.physinfo()
def nodeinfo(self):
(sys, host, rel, ver, mch) = os.uname()
return [['system', sys],
['host', host],
['release', rel],
['version', ver],
['machine', mch]]
def physinfo(self):
pinfo = self.xc.physinfo()
info = [['cores', pinfo['cores']],
['hyperthreads_per_core', pinfo['ht_per_core']],
['cpu_mhz', pinfo['cpu_khz']/1000],
['memory', pinfo['total_pages']/256],
['free_memory', pinfo['free_pages']/256]]
return info
def instance():
global inst
try:
inst
except:
inst = XendNode()
return inst
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