| 1 | import __main__ | 
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| 2 | import argparse | 
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| 3 | import contextlib | 
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| 4 | import datetime | 
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| 5 | import fileinput | 
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| 6 | import multiprocessing | 
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| 7 | import os | 
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| 8 | import re | 
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| 9 | import resource | 
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| 10 | import signal | 
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| 11 | import stat | 
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| 12 | import subprocess | 
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| 13 | import sys | 
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| 14 | import tempfile | 
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| 15 | import time | 
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| 16 | import types | 
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| 17 |  | 
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| 18 | from pybin import settings | 
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| 19 |  | 
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| 20 | ################################################################################ | 
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| 21 | #               shell helpers | 
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| 22 | ################################################################################ | 
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| 23 |  | 
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| 24 | # helper functions to run terminal commands | 
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| 25 | def sh(*cmd, timeout = False, output_file = None, input_file = None, input_text = None, error = subprocess.STDOUT, ignore_dry_run = False, pass_fds = [], nice = False): | 
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| 26 | try: | 
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| 27 | cmd = list(cmd) | 
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| 28 |  | 
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| 29 | if input_file and input_text: | 
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| 30 | return 401, "Cannot use both text and file inputs" | 
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| 31 |  | 
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| 32 | # if this is a dry_run, only print the commands that would be ran | 
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| 33 | if settings.dry_run and not ignore_dry_run: | 
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| 34 | cmd = "{} cmd: {}".format(os.getcwd(), ' '.join(cmd)) | 
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| 35 | if output_file and not isinstance(output_file, int): | 
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| 36 | cmd += " > " | 
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| 37 | cmd += output_file | 
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| 38 |  | 
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| 39 | if error and not isinstance(error, int): | 
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| 40 | cmd += " 2> " | 
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| 41 | cmd += error | 
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| 42 |  | 
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| 43 | if input_file and not isinstance(input_file, int) and os.path.isfile(input_file): | 
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| 44 | cmd += " < " | 
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| 45 | cmd += input_file | 
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| 46 |  | 
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| 47 | print(cmd) | 
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| 48 | return 0, None, None | 
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| 49 |  | 
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| 50 | with contextlib.ExitStack() as onexit: | 
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| 51 | # add input redirection if needed | 
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| 52 | input_file = openfd(input_file, 'r', onexit, True) | 
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| 53 |  | 
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| 54 | # add output redirection if needed | 
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| 55 | output_file = openfd(output_file, 'w', onexit, False) | 
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| 56 |  | 
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| 57 | # add error redirection if needed | 
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| 58 | error = openfd(error, 'w', onexit, False) | 
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| 59 |  | 
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| 60 | # prepare the parameters to the call | 
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| 61 | popen_kwargs = { | 
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| 62 | 'stdout' : output_file, | 
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| 63 | 'stderr' : error, | 
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| 64 | 'pass_fds': pass_fds, | 
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| 65 | } | 
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| 66 |  | 
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| 67 | # depending on how we are passing inputs we need to set a different argument to popen | 
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| 68 | if input_text: | 
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| 69 | popen_kwargs['input'] = bytes(input_text, encoding='utf-8') | 
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| 70 | else: | 
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| 71 | popen_kwargs['stdin'] = input_file | 
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| 72 |  | 
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| 73 | # we might want to nice this so it's not to obnixious to users | 
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| 74 | if nice: | 
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| 75 | popen_kwargs['preexec_fn'] = lambda: os.nice(5) | 
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| 76 |  | 
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| 77 | # run the desired command | 
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| 78 | # use with statement to make sure proc is cleaned | 
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| 79 | # don't use subprocess.run because we want to send SIGABRT on exit | 
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| 80 | with subprocess.Popen( cmd, **popen_kwargs ) as proc: | 
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| 81 | try: | 
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| 82 | out, errout = proc.communicate( | 
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| 83 | timeout = settings.timeout.single if timeout else None | 
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| 84 | ) | 
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| 85 |  | 
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| 86 | return proc.returncode, out.decode("latin-1") if out else None, errout.decode("latin-1") if errout else None | 
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| 87 | except subprocess.TimeoutExpired: | 
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| 88 | if settings.timeout2gdb: | 
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| 89 | print("Process {} timeout".format(proc.pid)) | 
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| 90 | proc.communicate() | 
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| 91 | return 124, str(None), "Subprocess Timeout 2 gdb" | 
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| 92 | else: | 
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| 93 | proc.send_signal(signal.SIGABRT) | 
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| 94 | proc.communicate() | 
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| 95 | return 124, str(None), "Subprocess Timeout 2 gdb" | 
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| 96 |  | 
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| 97 | except Exception as ex: | 
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| 98 | print ("Unexpected error: %s" % ex) | 
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| 99 | raise | 
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| 100 |  | 
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| 101 | def is_empty(fname): | 
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| 102 | if not os.path.isfile(fname): | 
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| 103 | return True | 
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| 104 |  | 
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| 105 | if os.stat(fname).st_size == 0: | 
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| 106 | return True | 
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| 107 |  | 
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| 108 | return False | 
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| 109 |  | 
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| 110 | def is_ascii(fname): | 
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| 111 | if settings.dry_run: | 
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| 112 | print("is_ascii: %s" % fname) | 
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| 113 | return (True, "") | 
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| 114 |  | 
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| 115 | if not os.path.isfile(fname): | 
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| 116 | return (False, "No file") | 
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| 117 |  | 
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| 118 | code, out, err = sh("file", fname, output_file=subprocess.PIPE) | 
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| 119 | if code != 0: | 
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| 120 | return (False, "'file EXPECT' failed with code {} '{}'".format(code, err)) | 
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| 121 |  | 
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| 122 | match = re.search(".*: (.*)", out) | 
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| 123 |  | 
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| 124 | if not match: | 
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| 125 | return (False, "Unreadable file type: '{}'".format(out)) | 
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| 126 |  | 
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| 127 | if "ASCII text" in match.group(1): | 
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| 128 | return (True, "") | 
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| 129 |  | 
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| 130 | return (False, "File type should be 'ASCII text', was '{}'".format(match.group(1))) | 
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| 131 |  | 
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| 132 | def is_exe(fname): | 
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| 133 | return os.path.isfile(fname) and os.access(fname, os.X_OK) | 
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| 134 |  | 
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| 135 | def openfd(file, mode, exitstack, checkfile): | 
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| 136 | if not file: | 
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| 137 | return file | 
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| 138 |  | 
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| 139 | if isinstance(file, int): | 
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| 140 | return file | 
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| 141 |  | 
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| 142 | if checkfile and not os.path.isfile(file): | 
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| 143 | return None | 
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| 144 |  | 
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| 145 | file = open(file, mode, encoding="latin-1") # use latin-1 so all chars mean something. | 
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| 146 | exitstack.push(file) | 
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| 147 | return file | 
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| 148 |  | 
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| 149 | # Remove 1 or more files silently | 
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| 150 | def rm( files ): | 
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| 151 | if isinstance(files, str ): files = [ files ] | 
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| 152 | for file in files: | 
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| 153 | sh( 'rm', '-f', file, output_file=subprocess.DEVNULL, error=subprocess.DEVNULL ) | 
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| 154 |  | 
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| 155 | # Create 1 or more directory | 
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| 156 | def mkdir( files ): | 
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| 157 | if isinstance(files, str ): files = [ files ] | 
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| 158 | for file in files: | 
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| 159 | p = os.path.normpath( file ) | 
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| 160 | d = os.path.dirname ( p ) | 
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| 161 | sh( 'mkdir', '-p', d, output_file=subprocess.DEVNULL, error=subprocess.DEVNULL ) | 
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| 162 |  | 
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| 163 |  | 
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| 164 | def chdir( dest = __main__.__file__ ): | 
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| 165 | abspath = os.path.abspath(dest) | 
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| 166 | dname = os.path.dirname(abspath) | 
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| 167 | os.chdir(dname) | 
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| 168 |  | 
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| 169 | # diff two files | 
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| 170 | def diff( lhs, rhs ): | 
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| 171 | # fetch return code and error from the diff command | 
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| 172 | return sh( | 
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| 173 | '''diff''', | 
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| 174 | '''--text''', | 
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| 175 | '''--old-group-format=\t\tmissing lines :\n%<''', | 
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| 176 | '''--new-line-format=\t\t%dn\t%L''', | 
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| 177 | '''--new-group-format=\t\tnew lines : \n%>''', | 
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| 178 | '''--old-line-format=\t\t%dn\t%L''', | 
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| 179 | '''--unchanged-group-format=%=''', | 
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| 180 | '''--changed-group-format=\t\texpected :\n%<\t\tgot :\n%>''', | 
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| 181 | '''--unchanged-line-format=''', | 
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| 182 | lhs, | 
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| 183 | rhs, | 
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| 184 | output_file=subprocess.PIPE | 
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| 185 | ) | 
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| 186 |  | 
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| 187 | # call make | 
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| 188 | def make(target, *, flags = '', output_file = None, error = None, error_file = None, silent = False): | 
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| 189 | test_param = """test="%s" """ % (error_file) if error_file else None | 
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| 190 | cmd = [ | 
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| 191 | *settings.make, | 
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| 192 | '-s' if silent else None, | 
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| 193 | test_param, | 
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| 194 | settings.arch.flags, | 
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| 195 | settings.debug.flags, | 
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| 196 | settings.install.flags, | 
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| 197 | settings.distcc if settings.distribute else None, | 
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| 198 | flags, | 
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| 199 | target | 
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| 200 | ] | 
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| 201 | cmd = [s for s in cmd if s] | 
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| 202 | return sh(*cmd, output_file=output_file, error=error, pass_fds=settings.make_jobfds) | 
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| 203 |  | 
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| 204 | def make_recon(target): | 
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| 205 | cmd = [ | 
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| 206 | *settings.make, | 
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| 207 | '-W', | 
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| 208 | os.path.abspath(os.path.join(settings.BUILDDIR, '../driver/cfa')), | 
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| 209 | '--recon', | 
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| 210 | target | 
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| 211 | ] | 
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| 212 | cmd = [s for s in cmd if s] | 
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| 213 | return sh(*cmd, output_file=subprocess.PIPE) | 
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| 214 |  | 
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| 215 | def which(program): | 
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| 216 | fpath, fname = os.path.split(program) | 
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| 217 | if fpath: | 
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| 218 | if is_exe(program): | 
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| 219 | return program | 
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| 220 | else: | 
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| 221 | for path in os.environ["PATH"].split(os.pathsep): | 
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| 222 | exe_file = os.path.join(path, program) | 
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| 223 | if is_exe(exe_file): | 
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| 224 | return exe_file | 
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| 225 | return None | 
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| 226 |  | 
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| 227 | @contextlib.contextmanager | 
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| 228 | def tempdir(): | 
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| 229 | cwd = os.getcwd() | 
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| 230 | with tempfile.TemporaryDirectory() as temp: | 
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| 231 | os.chdir(temp) | 
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| 232 | try: | 
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| 233 | yield temp | 
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| 234 | finally: | 
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| 235 | os.chdir(cwd) | 
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| 236 |  | 
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| 237 | def killgroup(): | 
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| 238 | try: | 
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| 239 | os.killpg(os.getpgrp(), signal.SIGINT) | 
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| 240 | except KeyboardInterrupt: | 
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| 241 | pass # expected | 
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| 242 | except Exception as exc: | 
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| 243 | print("Unexpected exception", file=sys.stderr) | 
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| 244 | print(exc, file=sys.stderr) | 
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| 245 | sys.stderr.flush() | 
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| 246 | sys.exit(2) | 
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| 247 |  | 
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| 248 | ################################################################################ | 
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| 249 | #               file handling | 
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| 250 | ################################################################################ | 
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| 251 | # move a file | 
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| 252 | def mv(source, dest): | 
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| 253 | ret, _, _ = sh("mv", source, dest) | 
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| 254 | return ret | 
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| 255 |  | 
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| 256 | # cat one file into the other | 
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| 257 | def cat(source, dest): | 
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| 258 | ret, _, _ = sh("cat", source, output_file=dest) | 
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| 259 | return ret | 
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| 260 |  | 
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| 261 | # helper function to replace patterns in a file | 
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| 262 | def file_replace(fname, pat, s_after): | 
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| 263 | if settings.dry_run: | 
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| 264 | print("replacing '%s' with '%s' in %s" % (pat, s_after, fname)) | 
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| 265 | return | 
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| 266 |  | 
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| 267 | file = fileinput.FileInput(fname, inplace=True, backup='.bak') | 
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| 268 | for line in file: | 
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| 269 | print(line.replace(pat, s_after), end='') | 
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| 270 | file.close() | 
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| 271 |  | 
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| 272 | # helper function to check if a files contains only a specific string | 
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| 273 | def file_contains_only(file, text) : | 
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| 274 | with open(file, encoding="latin-1") as f: # use latin-1 so all chars mean something. | 
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| 275 | ff = f.read().strip() | 
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| 276 | result = ff == text.strip() | 
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| 277 |  | 
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| 278 | return result | 
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| 279 |  | 
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| 280 | # transform path to canonical form | 
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| 281 | def canonical_path(path): | 
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| 282 | abspath = os.path.abspath(os.path.realpath(__main__.__file__)) | 
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| 283 | dname = os.path.dirname(abspath) | 
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| 284 | return os.path.join(dname, os.path.normpath(path) ) | 
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| 285 |  | 
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| 286 | # compare path even if form is different | 
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| 287 | def path_cmp(lhs, rhs): | 
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| 288 | return canonical_path( lhs ) == canonical_path( rhs ) | 
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| 289 |  | 
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| 290 | # walk all files in a path | 
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| 291 | def path_walk( op ): | 
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| 292 | dname = settings.SRCDIR | 
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| 293 | for dirname, _, names in os.walk(dname): | 
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| 294 | for name in names: | 
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| 295 | path = os.path.join(dirname, name) | 
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| 296 | op( path ) | 
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| 297 |  | 
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| 298 | ################################################################################ | 
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| 299 | #               system | 
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| 300 | ################################################################################ | 
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| 301 | def jobserver_version(): | 
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| 302 | make_ret, out, err = sh('make', '.test_makeflags', '-j2', ignore_dry_run = True, output_file=subprocess.PIPE, error=subprocess.PIPE) | 
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| 303 | if make_ret != 0: | 
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| 304 | print("ERROR: cannot find Makefile jobserver version", file=sys.stderr) | 
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| 305 | print("       test returned : {} '{}'".format(make_ret, err), file=sys.stderr) | 
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| 306 | sys.exit(1) | 
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| 307 |  | 
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| 308 | re_jobs = re.search("--jobserver-(auth|fds)", out) | 
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| 309 | if not re_jobs: | 
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| 310 | print("ERROR: cannot find Makefile jobserver version", file=sys.stderr) | 
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| 311 | print("       MAKEFLAGS are : '{}'".format(out), file=sys.stderr) | 
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| 312 | sys.exit(1) | 
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| 313 |  | 
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| 314 | return "--jobserver-{}".format(re_jobs.group(1)) | 
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| 315 |  | 
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| 316 | def prep_recursive_make(N): | 
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| 317 | if N < 2: | 
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| 318 | return [] | 
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| 319 |  | 
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| 320 | # create the pipe | 
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| 321 | (r, w) = os.pipe() | 
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| 322 |  | 
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| 323 | # feel it with N-1 tokens, (Why N-1 and not N, I don't know it's in the manpage for make) | 
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| 324 | os.write(w, b'+' * (N - 1)); | 
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| 325 |  | 
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| 326 | # prep the flags for make | 
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| 327 | make_flags = ["-j{}".format(N), "--jobserver-auth={},{}".format(r, w)] | 
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| 328 |  | 
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| 329 | # tell make about the pipes | 
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| 330 | os.environ["MAKEFLAGS"] = os.environ["MFLAGS"] = " ".join(make_flags) | 
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| 331 |  | 
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| 332 | # make sure pass the pipes to our children | 
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| 333 | settings.update_make_fds(r, w) | 
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| 334 |  | 
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| 335 | return make_flags | 
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| 336 |  | 
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| 337 | def prep_unlimited_recursive_make(): | 
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| 338 | # prep the flags for make | 
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| 339 | make_flags = ["-j"] | 
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| 340 |  | 
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| 341 | # tell make about the pipes | 
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| 342 | os.environ["MAKEFLAGS"] = os.environ["MFLAGS"] = "-j" | 
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| 343 |  | 
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| 344 | return make_flags | 
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| 345 |  | 
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| 346 |  | 
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| 347 | def eval_hardware(): | 
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| 348 | # we can create as many things as we want | 
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| 349 | # how much hardware do we have? | 
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| 350 | if settings.distribute: | 
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| 351 | # remote hardware is allowed | 
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| 352 | # how much do we have? | 
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| 353 | ret, jstr, _ = sh("distcc", "-j", output_file=subprocess.PIPE, ignore_dry_run=True) | 
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| 354 | return int(jstr.strip()) if ret == 0 else multiprocessing.cpu_count() | 
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| 355 | else: | 
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| 356 | # remote isn't allowed, use local cpus | 
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| 357 | return multiprocessing.cpu_count() | 
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| 358 |  | 
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| 359 | # count number of jobs to create | 
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| 360 | def job_count( options ): | 
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| 361 | # check if the user already passed in a number of jobs for multi-threading | 
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| 362 | make_env = os.environ.get('MAKEFLAGS') | 
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| 363 | make_flags = make_env.split() if make_env else None | 
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| 364 | jobstr = jobserver_version() | 
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| 365 |  | 
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| 366 | if options.jobs and make_flags: | 
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| 367 | print('WARNING: -j options should not be specified when called form Make', file=sys.stderr) | 
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| 368 |  | 
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| 369 | # Top level make is calling the shots, just follow | 
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| 370 | if make_flags: | 
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| 371 | # do we have -j and --jobserver-... | 
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| 372 | jobopt = None | 
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| 373 | exists_fds = None | 
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| 374 | for f in make_flags: | 
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| 375 | jobopt = f if f.startswith("-j") else jobopt | 
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| 376 | exists_fds = f if f.startswith(jobstr) else exists_fds | 
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| 377 |  | 
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| 378 | # do we have limited parallelism? | 
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| 379 | if exists_fds : | 
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| 380 | try: | 
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| 381 | rfd, wfd = tuple(exists_fds.split('=')[1].split(',')) | 
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| 382 | except: | 
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| 383 | print("ERROR: jobserver has unrecoginzable format, was '{}'".format(exists_fds), file=sys.stderr) | 
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| 384 | sys.exit(1) | 
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| 385 |  | 
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| 386 | # read the token pipe to count number of available tokens and restore the pipe | 
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| 387 | # this assumes the test suite script isn't invoked in parellel with something else | 
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| 388 | tokens = os.read(int(rfd), 65536) | 
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| 389 | os.write(int(wfd), tokens) | 
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| 390 |  | 
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| 391 | # the number of tokens is off by one for obscure but well documented reason | 
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| 392 | # see man make for more details | 
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| 393 | options.jobs = len(tokens) + 1 | 
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| 394 |  | 
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| 395 | # do we have unlimited parallelism? | 
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| 396 | elif jobopt and jobopt != "-j1": | 
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| 397 | # check that this actually make sense | 
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| 398 | if jobopt != "-j": | 
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| 399 | print("ERROR: -j option passed by make but no {}, was '{}'".format(jobstr, jobopt), file=sys.stderr) | 
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| 400 | sys.exit(1) | 
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| 401 |  | 
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| 402 | options.jobs = eval_hardware() | 
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| 403 | flags = prep_unlimited_recursive_make() | 
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| 404 |  | 
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| 405 |  | 
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| 406 | # then no parallelism | 
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| 407 | else: | 
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| 408 | options.jobs = 1 | 
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| 409 |  | 
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| 410 | # keep all flags make passed along, except the weird 'w' which is about subdirectories | 
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| 411 | flags = [f for f in make_flags if f != 'w'] | 
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| 412 |  | 
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| 413 | # Arguments are calling the shots, fake the top level make | 
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| 414 | elif options.jobs : | 
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| 415 |  | 
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| 416 | # make sure we have a valid number of jobs that corresponds to user input | 
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| 417 | if options.jobs < 0 : | 
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| 418 | print('ERROR: Invalid number of jobs', file=sys.stderr) | 
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| 419 | sys.exit(1) | 
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| 420 |  | 
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| 421 | flags = prep_recursive_make(options.jobs) | 
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| 422 |  | 
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| 423 | # Arguments are calling the shots, fake the top level make, but 0 is a special case | 
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| 424 | elif options.jobs == 0: | 
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| 425 | options.jobs = eval_hardware() | 
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| 426 | flags = prep_unlimited_recursive_make() | 
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| 427 |  | 
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| 428 | # No one says to run in parallel, then don't | 
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| 429 | else : | 
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| 430 | options.jobs = 1 | 
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| 431 | flags = [] | 
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| 432 |  | 
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| 433 | # Make sure we call make as expected | 
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| 434 | settings.update_make_cmd( flags ) | 
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| 435 |  | 
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| 436 | # return the job count | 
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| 437 | return options.jobs | 
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| 438 |  | 
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| 439 | # enable core dumps for all the test children | 
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| 440 | resource.setrlimit(resource.RLIMIT_CORE, (resource.RLIM_INFINITY, resource.RLIM_INFINITY)) | 
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| 441 |  | 
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| 442 | ################################################################################ | 
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| 443 | #               misc | 
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| 444 | ################################################################################ | 
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| 445 |  | 
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| 446 | # get hash for given configuration | 
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| 447 | def config_hash(): | 
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| 448 | path = os.path.normpath(os.path.join( | 
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| 449 | settings.SRCDIR, | 
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| 450 | )) | 
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| 451 |  | 
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| 452 | distcc_hash = os.path.join(settings.SRCDIR, '../tools/build/distcc_hash') | 
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| 453 | config = "%s-%s" % (settings.arch.target, settings.debug.path) | 
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| 454 | _, out, _ = sh(distcc_hash, config, output_file=subprocess.PIPE, ignore_dry_run=True) | 
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| 455 | return out.strip() | 
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| 456 |  | 
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| 457 | # get pretty string for time of day | 
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| 458 | def pretty_now(): | 
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| 459 | ts = time.time() | 
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| 460 | print(ts, file=sys.stderr) | 
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| 461 | return datetime.datetime.fromtimestamp(ts).strftime('%Y-%m-%d_%H:%M:%S') | 
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| 462 |  | 
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| 463 | # check if arguments is yes or no | 
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| 464 | def yes_no(string): | 
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| 465 | if string == "yes" : | 
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| 466 | return True | 
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| 467 | if string == "no" : | 
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| 468 | return False | 
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| 469 | raise argparse.ArgumentTypeError(msg) | 
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| 470 |  | 
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| 471 | # Convert a function that converts a string to one that converts comma separated string. | 
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| 472 | def comma_separated(elements): | 
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| 473 | return lambda string: [elements(part) for part in string.split(',')] | 
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| 474 |  | 
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| 475 | def fancy_print(text): | 
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| 476 | column = which('column') | 
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| 477 | if column: | 
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| 478 | subprocess.run(column, input=bytes(text + "\n", "UTF-8")) | 
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| 479 | else: | 
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| 480 | print(text) | 
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| 481 |  | 
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| 482 |  | 
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| 483 | def core_info(path): | 
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| 484 | if not os.path.isfile(path): | 
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| 485 | return 1, "ERR Executable path is wrong" | 
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| 486 |  | 
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| 487 | cmd   = os.path.join(settings.SRCDIR, "pybin/print-core.gdb") | 
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| 488 | if not os.path.isfile(cmd): | 
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| 489 | return 1, "ERR Printing format for core dumps not found" | 
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| 490 |  | 
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| 491 | core  = os.path.join(os.getcwd(), "core" ) | 
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| 492 |  | 
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| 493 | if not os.path.isfile(core): | 
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| 494 | return 1, "ERR No core dump, expected '{}' (limit soft: {} hard: {})".format(core, *resource.getrlimit(resource.RLIMIT_CORE)) | 
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| 495 |  | 
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| 496 | try: | 
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| 497 | ret, out, err = sh('gdb', '-n', path, core, '-batch', '-x', cmd, output_file=subprocess.PIPE) | 
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| 498 | if ret == 0: | 
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| 499 | return 0, out | 
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| 500 | else: | 
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| 501 | return 1, err | 
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| 502 | except: | 
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| 503 | return 1, "ERR Could not read core with gdb" | 
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| 504 |  | 
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| 505 | def core_archive(dst, name, exe): | 
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| 506 | # Get the core dump | 
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| 507 | core = os.path.join(os.getcwd(), "core" ) | 
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| 508 |  | 
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| 509 | # update the path for this test | 
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| 510 | dst  = os.path.join(dst, name) | 
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| 511 |  | 
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| 512 | # make a directory for this test | 
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| 513 | # mkdir makes the parent directory only so add a dummy | 
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| 514 | mkdir( os.path.join(dst, "core") ) | 
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| 515 |  | 
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| 516 | # moves the files | 
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| 517 | mv( core, os.path.join(dst, "core" ) ) | 
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| 518 | mv( exe , os.path.join(dst, "exe"  ) ) | 
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| 519 |  | 
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| 520 | # return explanatory test | 
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| 521 | return "Archiving %s (executable and core) to %s" % (os.path.relpath(exe, settings.BUILDDIR), os.path.relpath(dst, settings.original_path)) | 
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| 522 |  | 
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| 523 | class Timed: | 
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| 524 | def __enter__(self): | 
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| 525 | self.start = time.time() | 
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| 526 | return self | 
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| 527 |  | 
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| 528 | def __exit__(self, *args): | 
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| 529 | self.end = time.time() | 
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| 530 | self.duration = self.end - self.start | 
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| 531 |  | 
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| 532 | def timed(src, timeout): | 
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| 533 | expire = time.time() + timeout | 
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| 534 | i = iter(src) | 
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| 535 | with contextlib.suppress(StopIteration): | 
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| 536 | while True: | 
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| 537 | yield i.next(max(expire - time.time(), 0)) | 
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| 538 |  | 
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| 539 | def fmtDur( duration ): | 
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| 540 | if duration : | 
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| 541 | hours, rem = divmod(duration, 3600) | 
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| 542 | minutes, rem = divmod(rem, 60) | 
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| 543 | seconds, millis = divmod(rem, 1) | 
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| 544 | return "%2d:%02d.%03d" % (minutes, seconds, millis * 1000) | 
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| 545 | return " n/a" | 
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