annotate contrib/showstack.py @ 49487:e8481625c582

rust: add Debug constraint to Matcher trait This makes sure we can easily debug which Matcher we're looking at when using trait objects, and is just generally useful. Effort to make the debugging output nicer has been kept to a minimum, please feel free to improve.
author Raphaël Gomès <rgomes@octobus.net>
date Mon, 11 Jul 2022 11:59:13 +0200
parents 6000f5b25c9b
children
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1 # showstack.py - extension to dump a Python stack trace on signal
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2 #
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3 # binds to both SIGQUIT (Ctrl-\) and SIGINFO (Ctrl-T on BSDs)
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4 r"""dump stack trace when receiving SIGQUIT (Ctrl-\) or SIGINFO (Ctrl-T on BSDs)
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5 """
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6
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7 import signal
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8 import sys
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9 import traceback
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11
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12 def sigshow(*args):
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13 sys.stderr.write("\n")
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14 traceback.print_stack(args[1], limit=10, file=sys.stderr)
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15 sys.stderr.write("----\n")
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16
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17
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18 def sigexit(*args):
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19 sigshow(*args)
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20 print('alarm!')
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21 sys.exit(1)
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22
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23
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24 def extsetup(ui):
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25 signal.signal(signal.SIGQUIT, sigshow)
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26 signal.signal(signal.SIGALRM, sigexit)
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27 try:
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28 signal.signal(signal.SIGINFO, sigshow)
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29 except AttributeError:
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30 pass