2 Routines for retrieving and manipulating kernel time
3 Copyright 2017 Cray Inc. All Rights Reserved
6 from pykdump.API import readSymbol, symbol_exists
7 from crashlib.exceptions import *
9 # --------------------------------------------------------------------------
10 # get_wallclock_seconds()
12 # There are multiple variants, depending on kernel version. Attempt to
13 # discern the proper method for retrieving the current wall clock time.
16 if symbol_exists('xtime'):
17 # SLES 11 uses struct timespec xtime to hold the wall time.
18 _wallclock_xtime = readSymbol('xtime')
19 def get_wallclock_seconds():
20 '''Return current time in seconds'''
21 return _wallclock_xtime.tv_sec
23 elif symbol_exists('timekeeper'):
24 # SLES 12 has a new timekeeper struct for that purpose
25 _wallclock_timekeeper = readSymbol('timekeeper')
26 def get_wallclock_seconds():
27 '''Return current time in seconds'''
28 return _wallclock_timekeeper.xtime_sec
30 elif symbol_exists('tk_core'):
31 # SLES 12 SP2 embeds the timekeeper struct in tk_core
32 _wallclock_tk_core = readSymbol('tk_core')
33 def get_wallclock_seconds():
34 '''Return current time in seconds'''
35 return _wallclock_tk_core.timekeeper.xtime_sec
38 # Unknown how to read wallclock time in this kernel
39 def get_wallclock_seconds():
40 raise CompatibilityError('Could not find wallclock time in the kernel')
42 # --------------------------------------------------------------------------