#!/usr/bin/env python
# encoding: utf-8
# Thomas Nagy, 2005-2018 (ita)
"""
Utilities and platform-specific fixes
The portability fixes try to provide a consistent behavior of the Waf API
through Python versions 2.5 to 3.X and across different platforms (win32, linux, etc)
"""
from __future__ import with_statement
import atexit, os, sys, errno, inspect, re, datetime, platform, base64, signal, functools, time, shlex
try:
import cPickle
except ImportError:
import pickle as cPickle
# leave this
if os.name == 'posix' and sys.version_info[0] < 3:
try:
import subprocess32 as subprocess
except ImportError:
import subprocess
else:
import subprocess
try:
TimeoutExpired = subprocess.TimeoutExpired
except AttributeError:
class TimeoutExpired(Exception):
pass
from collections import deque, defaultdict
try:
import _winreg as winreg
except ImportError:
try:
import winreg
except ImportError:
winreg = None
from waflib import Errors
try:
from hashlib import md5
except ImportError:
try:
from hashlib import sha1 as md5
except ImportError:
# never fail to enable potential fixes from another module
pass
else:
try:
md5().digest()
except ValueError:
# Fips? #2213
from hashlib import sha1 as md5
try:
import threading
except ImportError:
if not 'JOBS' in os.environ:
# no threading :-(
os.environ['JOBS'] = '1'
class threading(object):
"""
A fake threading class for platforms lacking the threading module.
Use ``waf -j1`` on those platforms
"""
pass
class Lock(object):
"""Fake Lock class"""
def acquire(self):
pass
def release(self):
pass
threading.Lock = threading.Thread = Lock
SIG_NIL = 'SIG_NIL_SIG_NIL_'.encode()
"""Arbitrary null value for hashes. Modify this value according to the hash function in use"""
O644 = 420
"""Constant representing the permissions for regular files (0644 raises a syntax error on python 3)"""
O755 = 493
"""Constant representing the permissions for executable files (0755 raises a syntax error on python 3)"""
rot_chr = ['\\', '|', '/', '-']
"List of characters to use when displaying the throbber (progress bar)"
rot_idx = 0
"Index of the current throbber character (progress bar)"
[docs]class ordered_iter_dict(dict):
"""Ordered dictionary that provides iteration from the most recently inserted keys first"""
def __init__(self, *k, **kw):
self.lst = deque()
dict.__init__(self, *k, **kw)
[docs] def clear(self):
dict.clear(self)
self.lst = deque()
def __setitem__(self, key, value):
if key in dict.keys(self):
self.lst.remove(key)
dict.__setitem__(self, key, value)
self.lst.append(key)
def __delitem__(self, key):
dict.__delitem__(self, key)
try:
self.lst.remove(key)
except ValueError:
pass
def __iter__(self):
return reversed(self.lst)
[docs] def keys(self):
return reversed(self.lst)
[docs]class lru_node(object):
"""
Used by :py:class:`waflib.Utils.lru_cache`
"""
__slots__ = ('next', 'prev', 'key', 'val')
def __init__(self):
self.next = self
self.prev = self
self.key = None
self.val = None
[docs]class lru_cache(object):
"""
A simple least-recently used cache with lazy allocation
"""
__slots__ = ('maxlen', 'table', 'head')
def __init__(self, maxlen=100):
self.maxlen = maxlen
"""
Maximum amount of elements in the cache
"""
self.table = {}
"""
Mapping key-value
"""
self.head = lru_node()
self.head.next = self.head
self.head.prev = self.head
def __getitem__(self, key):
node = self.table[key]
# assert(key==node.key)
if node is self.head:
return node.val
# detach the node found
node.prev.next = node.next
node.next.prev = node.prev
# replace the head
node.next = self.head.next
node.prev = self.head
self.head = node.next.prev = node.prev.next = node
return node.val
def __setitem__(self, key, val):
if key in self.table:
# update the value for an existing key
node = self.table[key]
node.val = val
self.__getitem__(key)
else:
if len(self.table) < self.maxlen:
# the very first item is unused until the maximum is reached
node = lru_node()
node.prev = self.head
node.next = self.head.next
node.prev.next = node.next.prev = node
else:
node = self.head = self.head.next
try:
# that's another key
del self.table[node.key]
except KeyError:
pass
node.key = key
node.val = val
self.table[key] = node
class lazy_generator(object):
def __init__(self, fun, params):
self.fun = fun
self.params = params
def __iter__(self):
return self
def __next__(self):
try:
it = self.it
except AttributeError:
it = self.it = self.fun(*self.params)
return next(it)
next = __next__
is_win32 = os.sep == '\\' or sys.platform == 'win32' or os.name == 'nt' # msys2
"""
Whether this system is a Windows series
"""
[docs]def readf(fname, m='r', encoding='latin-1'):
"""
Reads an entire file into a string. See also :py:meth:`waflib.Node.Node.readf`::
def build(ctx):
from waflib import Utils
txt = Utils.readf(self.path.find_node('wscript').abspath())
txt = ctx.path.find_node('wscript').read()
:type fname: string
:param fname: Path to file
:type m: string
:param m: Open mode
:type encoding: string
:param encoding: encoding value, only used for python 3
:rtype: string
:return: Content of the file
"""
if sys.hexversion > 0x3000000 and not 'b' in m:
m += 'b'
with open(fname, m) as f:
txt = f.read()
if encoding:
txt = txt.decode(encoding)
else:
txt = txt.decode()
else:
with open(fname, m) as f:
txt = f.read()
return txt
[docs]def writef(fname, data, m='w', encoding='latin-1'):
"""
Writes an entire file from a string.
See also :py:meth:`waflib.Node.Node.writef`::
def build(ctx):
from waflib import Utils
txt = Utils.writef(self.path.make_node('i_like_kittens').abspath(), 'some data')
self.path.make_node('i_like_kittens').write('some data')
:type fname: string
:param fname: Path to file
:type data: string
:param data: The contents to write to the file
:type m: string
:param m: Open mode
:type encoding: string
:param encoding: encoding value, only used for python 3
"""
if sys.hexversion > 0x3000000 and not 'b' in m:
data = data.encode(encoding)
m += 'b'
with open(fname, m) as f:
f.write(data)
[docs]def h_file(fname):
"""
Computes a hash value for a file by using md5. Use the md5_tstamp
extension to get faster build hashes if necessary.
:type fname: string
:param fname: path to the file to hash
:return: hash of the file contents
:rtype: string or bytes
"""
m = md5()
with open(fname, 'rb') as f:
while fname:
fname = f.read(200000)
m.update(fname)
return m.digest()
def readf_win32(f, m='r', encoding='latin-1'):
flags = os.O_NOINHERIT | os.O_RDONLY
if 'b' in m:
flags |= os.O_BINARY
if '+' in m:
flags |= os.O_RDWR
try:
fd = os.open(f, flags)
except OSError:
raise IOError('Cannot read from %r' % f)
if sys.hexversion > 0x3000000 and not 'b' in m:
m += 'b'
with os.fdopen(fd, m) as f:
txt = f.read()
if encoding:
txt = txt.decode(encoding)
else:
txt = txt.decode()
else:
with os.fdopen(fd, m) as f:
txt = f.read()
return txt
def writef_win32(f, data, m='w', encoding='latin-1'):
if sys.hexversion > 0x3000000 and not 'b' in m:
data = data.encode(encoding)
m += 'b'
flags = os.O_CREAT | os.O_TRUNC | os.O_WRONLY | os.O_NOINHERIT
if 'b' in m:
flags |= os.O_BINARY
if '+' in m:
flags |= os.O_RDWR
try:
fd = os.open(f, flags)
except OSError:
raise OSError('Cannot write to %r' % f)
with os.fdopen(fd, m) as f:
f.write(data)
def h_file_win32(fname):
try:
fd = os.open(fname, os.O_BINARY | os.O_RDONLY | os.O_NOINHERIT)
except OSError:
raise OSError('Cannot read from %r' % fname)
m = md5()
with os.fdopen(fd, 'rb') as f:
while fname:
fname = f.read(200000)
m.update(fname)
return m.digest()
# always save these
readf_unix = readf
writef_unix = writef
h_file_unix = h_file
if hasattr(os, 'O_NOINHERIT') and sys.hexversion < 0x3040000:
# replace the default functions
readf = readf_win32
writef = writef_win32
h_file = h_file_win32
try:
x = ''.encode('hex')
except LookupError:
import binascii
def to_hex(s):
ret = binascii.hexlify(s)
if not isinstance(ret, str):
ret = ret.decode('utf-8')
return ret
else:
[docs] def to_hex(s):
return s.encode('hex')
to_hex.__doc__ = """
Return the hexadecimal representation of a string
:param s: string to convert
:type s: string
"""
[docs]def listdir_win32(s):
"""
Lists the contents of a folder in a portable manner.
On Win32, returns the list of drive letters: ['C:', 'X:', 'Z:'] when an empty string is given.
:type s: string
:param s: a string, which can be empty on Windows
"""
if not s:
try:
import ctypes
except ImportError:
# there is nothing much we can do
return [x + ':\\' for x in 'ABCDEFGHIJKLMNOPQRSTUVWXYZ']
else:
dlen = 4 # length of "?:\\x00"
maxdrives = 26
buf = ctypes.create_string_buffer(maxdrives * dlen)
ndrives = ctypes.windll.kernel32.GetLogicalDriveStringsA(maxdrives*dlen, ctypes.byref(buf))
return [ str(buf.raw[4*i:4*i+2].decode('ascii')) for i in range(int(ndrives/dlen)) ]
if len(s) == 2 and s[1] == ":":
s += os.sep
if not os.path.isdir(s):
e = OSError('%s is not a directory' % s)
e.errno = errno.ENOENT
raise e
return os.listdir(s)
listdir = os.listdir
if is_win32:
listdir = listdir_win32
[docs]def num2ver(ver):
"""
Converts a string, tuple or version number into an integer. The number is supposed to have at most 4 digits::
from waflib.Utils import num2ver
num2ver('1.3.2') == num2ver((1,3,2)) == num2ver((1,3,2,0))
:type ver: string or tuple of numbers
:param ver: a version number
"""
if isinstance(ver, str):
ver = tuple(ver.split('.'))
if isinstance(ver, tuple):
ret = 0
for i in range(4):
if i < len(ver):
ret += 256**(3 - i) * int(ver[i])
return ret
return ver
[docs]def to_list(val):
"""
Converts a string argument to a list by splitting it by spaces.
Returns the object if not a string::
from waflib.Utils import to_list
lst = to_list('a b c d')
:param val: list of string or space-separated string
:rtype: list
:return: Argument converted to list
"""
if isinstance(val, str):
return val.split()
else:
return val
def console_encoding():
try:
import ctypes
except ImportError:
pass
else:
try:
codepage = ctypes.windll.kernel32.GetConsoleCP()
except AttributeError:
pass
else:
if codepage:
if 65001 == codepage and sys.version_info < (3, 3):
return 'utf-8'
return 'cp%d' % codepage
return sys.stdout.encoding or ('cp1252' if is_win32 else 'latin-1')
[docs]def split_path_unix(path):
return path.split('/')
def split_path_cygwin(path):
if path.startswith('//'):
ret = path.split('/')[2:]
ret[0] = '/' + ret[0]
return ret
return path.split('/')
re_sp = re.compile('[/\\\\]+')
def split_path_win32(path):
if path.startswith('\\\\'):
ret = re_sp.split(path)[1:]
ret[0] = '\\\\' + ret[0]
if ret[0] == '\\\\?':
return ret[1:]
return ret
return re_sp.split(path)
msysroot = None
def split_path_msys(path):
if path.startswith(('/', '\\')) and not path.startswith(('//', '\\\\')):
# msys paths can be in the form /usr/bin
global msysroot
if not msysroot:
# msys has python 2.7 or 3, so we can use this
msysroot = subprocess.check_output(['cygpath', '-w', '/']).decode(sys.stdout.encoding or 'latin-1')
msysroot = msysroot.strip()
path = os.path.normpath(msysroot + os.sep + path)
return split_path_win32(path)
if sys.platform == 'cygwin':
split_path = split_path_cygwin
elif is_win32:
# Consider this an MSYSTEM environment if $MSYSTEM is set and python
# reports is executable from a unix like path on a windows host.
if os.environ.get('MSYSTEM') and sys.executable.startswith('/'):
split_path = split_path_msys
else:
split_path = split_path_win32
else:
split_path = split_path_unix
split_path.__doc__ = """
Splits a path by / or \\; do not confuse this function with with ``os.path.split``
:type path: string
:param path: path to split
:return: list of string
"""
[docs]def check_dir(path):
"""
Ensures that a directory exists (similar to ``mkdir -p``).
:type path: string
:param path: Path to directory
:raises: :py:class:`waflib.Errors.WafError` if the folder cannot be added.
"""
if not os.path.isdir(path):
try:
os.makedirs(path)
except OSError as e:
if not os.path.isdir(path):
raise Errors.WafError('Cannot create the folder %r' % path, ex=e)
[docs]def check_exe(name, env=None):
"""
Ensures that a program exists
:type name: string
:param name: path to the program
:param env: configuration object
:type env: :py:class:`waflib.ConfigSet.ConfigSet`
:return: path of the program or None
:raises: :py:class:`waflib.Errors.WafError` if the folder cannot be added.
"""
if not name:
raise ValueError('Cannot execute an empty string!')
def is_exe(fpath):
return os.path.isfile(fpath) and os.access(fpath, os.X_OK)
fpath, fname = os.path.split(name)
if fpath and is_exe(name):
return os.path.abspath(name)
else:
env = env or os.environ
for path in env['PATH'].split(os.pathsep):
path = path.strip('"')
exe_file = os.path.join(path, name)
if is_exe(exe_file):
return os.path.abspath(exe_file)
return None
[docs]def def_attrs(cls, **kw):
"""
Sets default attributes on a class instance
:type cls: class
:param cls: the class to update the given attributes in.
:type kw: dict
:param kw: dictionary of attributes names and values.
"""
for k, v in kw.items():
if not hasattr(cls, k):
setattr(cls, k, v)
[docs]def quote_define_name(s):
"""
Converts a string into an identifier suitable for C defines.
:type s: string
:param s: String to convert
:rtype: string
:return: Identifier suitable for C defines
"""
fu = re.sub('[^a-zA-Z0-9]', '_', s)
fu = re.sub('_+', '_', fu)
fu = fu.upper()
return fu
# shlex.quote didn't exist until python 3.3. Prior to that it was a non-documented
# function in pipes.
try:
shell_quote = shlex.quote
except AttributeError:
import pipes
shell_quote = pipes.quote
[docs]def shell_escape(cmd):
"""
Escapes a command:
['ls', '-l', 'arg space'] -> ls -l 'arg space'
"""
if isinstance(cmd, str):
return cmd
return ' '.join(shell_quote(x) for x in cmd)
[docs]def h_list(lst):
"""
Hashes lists of ordered data.
Using hash(tup) for tuples would be much more efficient,
but Python now enforces hash randomization
:param lst: list to hash
:type lst: list of strings
:return: hash of the list
"""
return md5(repr(lst).encode()).digest()
if sys.hexversion < 0x3000000:
def h_list_python2(lst):
return md5(repr(lst)).digest()
h_list_python2.__doc__ = h_list.__doc__
h_list = h_list_python2
[docs]def h_fun(fun):
"""
Hash functions
:param fun: function to hash
:type fun: function
:return: hash of the function
:rtype: string or bytes
"""
try:
return fun.code
except AttributeError:
if isinstance(fun, functools.partial):
code = list(fun.args)
# The method items() provides a sequence of tuples where the first element
# represents an optional argument of the partial function application
#
# The sorting result outcome will be consistent because:
# 1. tuples are compared in order of their elements
# 2. optional argument namess are unique
code.extend(sorted(fun.keywords.items()))
code.append(h_fun(fun.func))
fun.code = h_list(code)
return fun.code
try:
h = inspect.getsource(fun)
except EnvironmentError:
h = 'nocode'
try:
fun.code = h
except AttributeError:
pass
return h
[docs]def h_cmd(ins):
"""
Hashes objects recursively
:param ins: input object
:type ins: string or list or tuple or function
:rtype: string or bytes
"""
# this function is not meant to be particularly fast
if isinstance(ins, str):
# a command is either a string
ret = ins
elif isinstance(ins, list) or isinstance(ins, tuple):
# or a list of functions/strings
ret = str([h_cmd(x) for x in ins])
else:
# or just a python function
ret = str(h_fun(ins))
if sys.hexversion > 0x3000000:
ret = ret.encode('latin-1', 'xmlcharrefreplace')
return ret
reg_subst = re.compile(r"(\\\\)|(\$\$)|\$\{([^}]+)\}")
[docs]def subst_vars(expr, params):
"""
Replaces ${VAR} with the value of VAR taken from a dict or a config set::
from waflib import Utils
s = Utils.subst_vars('${PREFIX}/bin', env)
:type expr: string
:param expr: String to perform substitution on
:param params: Dictionary or config set to look up variable values.
"""
def repl_var(m):
if m.group(1):
return '\\'
if m.group(2):
return '$'
try:
# ConfigSet instances may contain lists
return params.get_flat(m.group(3))
except AttributeError:
return params[m.group(3)]
# if you get a TypeError, it means that 'expr' is not a string...
# Utils.subst_vars(None, env) will not work
return reg_subst.sub(repl_var, expr)
[docs]def destos_to_binfmt(key):
"""
Returns the binary format based on the unversioned platform name,
and defaults to ``elf`` if nothing is found.
:param key: platform name
:type key: string
:return: string representing the binary format
"""
if key == 'darwin':
return 'mac-o'
elif key in ('win32', 'cygwin', 'uwin', 'msys'):
return 'pe'
return 'elf'
[docs]def nada(*k, **kw):
"""
Does nothing
:return: None
"""
pass
[docs]class Timer(object):
"""
Simple object for timing the execution of commands.
Its string representation is the duration::
from waflib.Utils import Timer
timer = Timer()
a_few_operations()
s = str(timer)
"""
def __init__(self):
self.start_time = self.now()
def __str__(self):
delta = self.now() - self.start_time
if not isinstance(delta, datetime.timedelta):
delta = datetime.timedelta(seconds=delta)
days = delta.days
hours, rem = divmod(delta.seconds, 3600)
minutes, seconds = divmod(rem, 60)
seconds += delta.microseconds * 1e-6
result = ''
if days:
result += '%dd' % days
if days or hours:
result += '%dh' % hours
if days or hours or minutes:
result += '%dm' % minutes
return '%s%.3fs' % (result, seconds)
def now(self):
return datetime.datetime.utcnow()
if hasattr(time, 'perf_counter'):
def now(self):
return time.perf_counter()
[docs]def read_la_file(path):
"""
Reads property files, used by msvc.py
:param path: file to read
:type path: string
"""
sp = re.compile(r'^([^=]+)=\'(.*)\'$')
dc = {}
for line in readf(path).splitlines():
try:
_, left, right, _ = sp.split(line.strip())
dc[left] = right
except ValueError:
pass
return dc
[docs]def run_once(fun):
"""
Decorator: let a function cache its results, use like this::
@run_once
def foo(k):
return 345*2343
.. note:: in practice this can cause memory leaks, prefer a :py:class:`waflib.Utils.lru_cache`
:param fun: function to execute
:type fun: function
:return: the return value of the function executed
"""
cache = {}
def wrap(*k):
try:
return cache[k]
except KeyError:
ret = fun(*k)
cache[k] = ret
return ret
wrap.__cache__ = cache
wrap.__name__ = fun.__name__
return wrap
[docs]def get_registry_app_path(key, filename):
"""
Returns the value of a registry key for an executable
:type key: string
:type filename: list of string
"""
if not winreg:
return None
try:
result = winreg.QueryValue(key, "Software\\Microsoft\\Windows\\CurrentVersion\\App Paths\\%s.exe" % filename[0])
except OSError:
pass
else:
if os.path.isfile(result):
return result
[docs]def lib64():
"""
Guess the default ``/usr/lib`` extension for 64-bit applications
:return: '64' or ''
:rtype: string
"""
# default settings for /usr/lib
if os.sep == '/':
if platform.architecture()[0] == '64bit':
if os.path.exists('/usr/lib64') and not os.path.exists('/usr/lib32'):
return '64'
return ''
def loose_version(ver_str):
# private for the time being!
# see #2402
lst = re.split(r'([.]|\\d+|[a-zA-Z])', ver_str)
ver = []
for i, val in enumerate(lst):
try:
ver.append(int(val))
except ValueError:
if val != '.':
ver.append(val)
return ver
def sane_path(p):
# private function for the time being!
return os.path.abspath(os.path.expanduser(p))
process_pool = []
"""
List of processes started to execute sub-process commands
"""
[docs]def get_process():
"""
Returns a process object that can execute commands as sub-processes
:rtype: subprocess.Popen
"""
try:
return process_pool.pop()
except IndexError:
filepath = os.path.dirname(os.path.abspath(__file__)) + os.sep + 'processor.py'
cmd = [sys.executable, '-c', readf(filepath)]
return subprocess.Popen(cmd, stdout=subprocess.PIPE, stdin=subprocess.PIPE, bufsize=0, close_fds=not is_win32)
[docs]def run_prefork_process(cmd, kwargs, cargs):
"""
Delegates process execution to a pre-forked process instance.
"""
if not kwargs.get('env'):
kwargs['env'] = dict(os.environ)
try:
obj = base64.b64encode(cPickle.dumps([cmd, kwargs, cargs]))
except (TypeError, AttributeError):
return run_regular_process(cmd, kwargs, cargs)
proc = get_process()
if not proc:
return run_regular_process(cmd, kwargs, cargs)
proc.stdin.write(obj)
proc.stdin.write('\n'.encode())
proc.stdin.flush()
obj = proc.stdout.readline()
if not obj:
raise OSError('Preforked sub-process %r died' % proc.pid)
process_pool.append(proc)
lst = cPickle.loads(base64.b64decode(obj))
# Jython wrapper failures (bash/execvp)
assert len(lst) == 5
ret, out, err, ex, trace = lst
if ex:
if ex == 'OSError':
raise OSError(trace)
elif ex == 'ValueError':
raise ValueError(trace)
elif ex == 'TimeoutExpired':
exc = TimeoutExpired(cmd, timeout=cargs['timeout'], output=out)
exc.stderr = err
raise exc
else:
raise Exception(trace)
return ret, out, err
[docs]def lchown(path, user=-1, group=-1):
"""
Change the owner/group of a path, raises an OSError if the
ownership change fails.
:param user: user to change
:type user: int or str
:param group: group to change
:type group: int or str
"""
if isinstance(user, str):
import pwd
entry = pwd.getpwnam(user)
if not entry:
raise OSError('Unknown user %r' % user)
user = entry[2]
if isinstance(group, str):
import grp
entry = grp.getgrnam(group)
if not entry:
raise OSError('Unknown group %r' % group)
group = entry[2]
return os.lchown(path, user, group)
[docs]def run_regular_process(cmd, kwargs, cargs={}):
"""
Executes a subprocess command by using subprocess.Popen
"""
proc = subprocess.Popen(cmd, **kwargs)
if kwargs.get('stdout') or kwargs.get('stderr'):
try:
out, err = proc.communicate(**cargs)
except TimeoutExpired:
if kwargs.get('start_new_session') and hasattr(os, 'killpg'):
os.killpg(proc.pid, signal.SIGKILL)
else:
proc.kill()
out, err = proc.communicate()
exc = TimeoutExpired(proc.args, timeout=cargs['timeout'], output=out)
exc.stderr = err
raise exc
status = proc.returncode
else:
out, err = (None, None)
try:
status = proc.wait(**cargs)
except TimeoutExpired as e:
if kwargs.get('start_new_session') and hasattr(os, 'killpg'):
os.killpg(proc.pid, signal.SIGKILL)
else:
proc.kill()
proc.wait()
raise e
return status, out, err
[docs]def run_process(cmd, kwargs, cargs={}):
"""
Executes a subprocess by using a pre-forked process when possible
or falling back to subprocess.Popen. See :py:func:`waflib.Utils.run_prefork_process`
and :py:func:`waflib.Utils.run_regular_process`
"""
if kwargs.get('stdout') and kwargs.get('stderr'):
return run_prefork_process(cmd, kwargs, cargs)
else:
return run_regular_process(cmd, kwargs, cargs)
[docs]def alloc_process_pool(n, force=False):
"""
Allocates an amount of processes to the default pool so its size is at least *n*.
It is useful to call this function early so that the pre-forked
processes use as little memory as possible.
:param n: pool size
:type n: integer
:param force: if True then *n* more processes are added to the existing pool
:type force: bool
"""
# mandatory on python2, unnecessary on python >= 3.2
global run_process, get_process, alloc_process_pool
if not force:
n = max(n - len(process_pool), 0)
try:
lst = [get_process() for x in range(n)]
except OSError:
run_process = run_regular_process
get_process = alloc_process_pool = nada
else:
for x in lst:
process_pool.append(x)
def atexit_pool():
for k in process_pool:
try:
os.kill(k.pid, 9)
except OSError:
pass
else:
k.wait()
# see #1889
if (sys.hexversion<0x207000f and not is_win32) or sys.hexversion>=0x306000f:
atexit.register(atexit_pool)
if os.environ.get('WAF_NO_PREFORK') or sys.platform == 'cli' or not sys.executable:
run_process = run_regular_process
get_process = alloc_process_pool = nada
