Mercurial > hg
annotate contrib/showstack.py @ 46192:25d11b24dedf
upgrade: move printing of unused optimizations to UpgradeOperation class
Differential Revision: https://phab.mercurial-scm.org/D9578
author | Pulkit Goyal <7895pulkit@gmail.com> |
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date | Mon, 14 Dec 2020 13:48:25 +0530 |
parents | 2372284d9457 |
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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 from __future__ import absolute_import, print_function |
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8 import signal |
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9 import sys |
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10 import traceback |
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11 |
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12 |
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13 def sigshow(*args): |
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14 sys.stderr.write("\n") |
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15 traceback.print_stack(args[1], limit=10, file=sys.stderr) |
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16 sys.stderr.write("----\n") |
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17 |
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18 |
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19 def sigexit(*args): |
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20 sigshow(*args) |
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21 print('alarm!') |
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22 sys.exit(1) |
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23 |
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24 |
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25 def extsetup(ui): |
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26 signal.signal(signal.SIGQUIT, sigshow) |
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27 signal.signal(signal.SIGALRM, sigexit) |
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28 try: |
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29 signal.signal(signal.SIGINFO, sigshow) |
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30 except AttributeError: |
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31 pass |