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# Permission is hereby granted, free of charge, to any person
# obtaining a copy of this software and associated documentation
# files (the "Software"), to deal in the Software without
# restriction, including without limitation the rights to use,
# copy, modify, merge, publish, distribute, sublicense, and/or
# sell copies of the Software, and to permit persons to whom the
# Software is furnished to do so, subject to the following
# conditions:
#
# This permission notice shall be included in all copies or
# substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
# PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHOR(S) BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
# AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
# OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
# DEALINGS IN THE SOFTWARE.
# Piglit core
from __future__ import (
absolute_import, division, print_function, unicode_literals
)
import errno
import os
import subprocess
import sys
from six.moves import configparser
from framework import exceptions
__all__ = [
'PIGLIT_CONFIG',
'PLATFORMS',
'PiglitConfig',
'collect_system_info',
'parse_listfile',
]
PLATFORMS = ["glx", "x11_egl", "wayland", "gbm", "mixed_glx_egl"]
class PiglitConfig(configparser.SafeConfigParser):
"""Custom Config parser that provides a few extra helpers."""
def __init__(self, *args, **kwargs):
# In Python2 the ConfigParser classes are old style, you can't use
# super() on them. sigh
configparser.SafeConfigParser.__init__(self, *args, **kwargs)
self.filename = None
def readfp(self, fp, filename=None):
# In Python2 the ConfigParser classes are old style, you can't use
# super() on them. sigh
configparser.SafeConfigParser.readfp(self, fp, filename)
self.filename = os.path.abspath(filename or fp.name)
def safe_get(self, section, option, fallback=None, **kwargs):
"""A version of self.get that doesn't raise NoSectionError or
NoOptionError.
This is equivalent to passing if the option isn't found. It will return
None if an error is caught
"""
try:
return self.get(section, option, **kwargs)
except (configparser.NoOptionError, configparser.NoSectionError):
return fallback
def required_get(self, section, option, **kwargs):
"""A version fo self.get that raises PiglitFatalError.
If self.get returns NoSectionError or NoOptionError then this will
raise a PiglitFatalException, aborting the program.
"""
try:
return self.get(section, option, **kwargs)
except configparser.NoSectionError:
raise exceptions.PiglitFatalError(
'No Section "{}" in file "{}".\n'
'This section is required.'.format(
section, self.filename))
except configparser.NoOptionError:
raise exceptions.PiglitFatalError(
'No option "{}" from section "{}" in file "{}".\n'
'This option is required.'.format(
option, section, self.filename))
PIGLIT_CONFIG = PiglitConfig(allow_no_value=True)
def get_config(arg=None):
if arg:
PIGLIT_CONFIG.readfp(arg)
else:
# Load the piglit.conf. First try looking in the current directory,
# then trying the XDG_CONFIG_HOME, then $HOME/.config/, finally try the
# piglit root dir
for d in ['.',
os.environ.get('XDG_CONFIG_HOME',
os.path.expandvars('$HOME/.config')),
os.path.join(os.path.dirname(__file__), '..')]:
try:
with open(os.path.join(d, 'piglit.conf'), 'r') as f:
PIGLIT_CONFIG.readfp(f)
break
except IOError:
pass
# Ensure the given directory exists
def checkDir(dirname, failifexists):
exists = True
try:
os.stat(dirname)
except OSError as e:
if e.errno == errno.ENOENT or e.errno == errno.ENOTDIR:
exists = False
if exists and failifexists:
print("%(dirname)s exists already.\nUse --overwrite if "
"you want to overwrite it.\n" % locals(), file=sys.stderr)
exit(1)
try:
os.makedirs(dirname)
except OSError as e:
if e.errno != errno.EEXIST:
raise
def collect_system_info():
""" Get relavent information about the system running piglit
This method runs through a list of tuples, where element 1 is the name of
the program being run, and elemnt 2 is a command to run (in a form accepted
by subprocess.Popen)
"""
progs = [('wglinfo', ['wglinfo']),
('glxinfo', ['glxinfo']),
('uname', ['uname', '-a']),
('clinfo', ['clinfo']),
('lspci', ['lspci', '-nn'])]
result = {}
for name, command in progs:
try:
result[name] = subprocess.check_output(command,
stderr=subprocess.STDOUT)
except OSError as e:
# If we get the 'no file or directory' error then pass, that means
# that the binary isn't installed or isn't relavent to the system.
# If it's any other OSError, then raise
if e.errno != errno.ENOENT:
raise
except subprocess.CalledProcessError:
# If the binary is installed by doesn't work on the window system
# (glxinfo) it will raise this error. go on
pass
return result
def parse_listfile(filename):
"""
Parses a newline-seperated list in a text file and returns a python list
object. It will expand tildes on Unix-like system to the users home
directory.
ex file.txt:
~/tests1
~/tests2/main
/tmp/test3
returns:
['/home/user/tests1', '/home/users/tests2/main', '/tmp/test3']
"""
with open(filename, 'r') as file:
return [os.path.expanduser(i.strip()) for i in file.readlines()]
class lazy_property(object): # pylint: disable=invalid-name,too-few-public-methods
"""Descriptor that replaces the function it wraps with the value generated.
This makes a property that is truely lazy, it is calculated once on demand,
and stored. This makes this very useful for values that you might want to
calculate and reuse, but they cannot change.
This works by very cleverly shadowing itself with the calculated value. It
adds the value to the instance, which pushes itself up the MRO and will
never be quired again.
"""
def __init__(self, func):
self.__func = func
def __get__(self, instance, cls):
value = self.__func(instance)
setattr(instance, self.__func.__name__, value)
return value
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