Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/extract/src/memento.py @ 46:7ee69f120f19 default tip

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
>>>>> tag v1.26.5+1 for changeset b74429b0f5c4
author Franz Glasner <fzglas.hg@dom66.de>
date Sat, 11 Oct 2025 17:17:30 +0200
parents b50eed0cc0ef
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
2
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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1 #!/usr/bin/env python3
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2
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3 '''
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4 Post-processor for Memento.
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5
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6 Usage:
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7 memento.py <args> [<command> ...]
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8
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9 Args:
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10 -q <quiet>
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11 Controls how often we output 'Memory squeezing @ ...' lines. E.g. '-q
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12 10' outputs for multiples of 10.
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13
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14 If <command> is specified we run it and look at the output. Otherwise we assume
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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15 that Memento output is available on our stdin.
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16 '''
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17
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18 import os
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19 import re
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20 import subprocess
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21 import sys
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22
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23
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24 def main():
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25 quiet = 1
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26 quiet_next = 0
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27 out_raw = None
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28 command = None
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29 args = iter(sys.argv[1:])
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30 while 1:
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31 try:
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32 arg = next(args)
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33 except StopIteration:
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34 break
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35 if arg == '-h':
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36 print(__doc__)
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37 elif arg == '-o':
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38 out_raw = open(next(args), 'w')
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39 elif arg == '-q':
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40 quiet = int(next(args))
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41 elif arg.startswith('-'):
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42 raise Exception(f'unrecognised arg: {arg}')
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43 else:
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44 command = arg
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45 for a in args:
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46 command += f' {a}'
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47
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48 if command:
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49 print(f'Running: {command}')
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50 child = subprocess.Popen(
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51 command,
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52 stdout=subprocess.PIPE,
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53 stderr=subprocess.STDOUT,
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54 shell=True,
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55 text=True,
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56 )
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57 stdin = child.stdout
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58 else:
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59 stdin = sys.stdin
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60
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61 openbsd = os.uname()[0] == 'OpenBSD'
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62 n = None
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63 segv = 0
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64 leaks = 0
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65 lines = []
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66 for line in stdin:
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67 if out_raw:
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68 out_raw.write(line)
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69 m = re.match('^Memory squeezing @ ([0-9]+)( complete)?', line)
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70 if m:
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71 if not m.group(2):
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72 # Start of squeeze.
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73
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74 if 0 and not openbsd:
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75 # Looks like memento's forked processes might terminate
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76 # before they get to output the 'Memory squeezing @ <N>
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77 # complete' line.
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78 #
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79 assert n is None, f'n={n} line={line!r}'
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80
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81 n = int(m.group(1))
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82 if n >= quiet_next:
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83 sys.stdout.write(f'quiet_next={quiet_next!r} n={n!r}: {line}')
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84 sys.stdout.flush()
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85 quiet_next = (n + quiet) // quiet * quiet
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86 else:
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87 # End of squeeze.
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88 assert n == int(m.group(1))
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89 # Output info about any failure:
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90 if segv or leaks:
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91 print(f'Failure at squeeze {n}: segv={segv} leaks={leaks}:')
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92 for l in lines:
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93 if l.endswith('\n'):
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94 l = l[:-1]
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95 print(f' {l}')
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96 if command:
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97 print(f'Examine with: MEMENTO_FAILAT={n} {command}')
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98 lines = []
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99 segv = 0
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100 leaks = 0
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101 n = None
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102 else:
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
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103 if n is not None:
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
104 lines.append(line)
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
105 if line.startswith('SEGV at:'):
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
106 segv = 1
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
107 if line.startswith('Allocated blocks'):
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
108 leaks = 1
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
109
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
110
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parents:
diff changeset
111 if __name__ == '__main__':
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
112 main()