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# Copyright (c) 2012, Intel Corporation

# All rights reserved.

#

# Redistribution and use in source and binary forms, with or without

# modification, are permitted provided that the following conditions are met:

#

# * Redistributions of source code must retain the above copyright notice,

# this list of conditions and the following disclaimer.

# * Redistributions in binary form must reproduce the above copyright notice,

# this list of conditions and the following disclaimer in the documentation

# and/or other materials provided with the distribution.

# * Neither the name of Intel Corporation nor the names of its contributors

# may be used to endorse or promote products derived from this software

# without specific prior written permission.

#

# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND

# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE

# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR

# ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON

# ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS

# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

"""Test utility functions."""

import bits

def apicid_list(apicids):

if len(apicids) == len(bits.cpus()):

return "all"

else:

return " ".join("{0:#x}".format(cpu) for cpu in sorted(apicids))

def find_common_mask(l, bitwidth=32):

allones = (2**bitwidth)-1

mask_1s = mask_0s = allones

for value in l:

mask_1s = mask_1s & value

mask_0s = mask_0s & ~value

return mask_1s | mask_0s

def adjust_to_nearest(value, factor):

"""returns input value rounded to the nearest multiple of factor"""

return ((value + (factor // 2)) // factor) * factor