upstream/mercurial-mirror Files · contrib/showstack.py

remotephase: avoid full changelog iteration (issue5964)...

remotephase: avoid full changelog iteration (issue5964) Changeset introduced a performance regression by triggering a full ancestors walk. This changeset reworks this logic so that we no longer walk down the full changelog. The motivation for 88efb7d6bcb6, issue5939, is still fixed. mercurial compared to a draft repository ---------------------------------------- 8eeed92475d5: 0.012637 seconds 88efb7d6bcb6: 0.202699 seconds (x16) 46da52f4b820: 0.215551 seconds (+6%) this code: 0.008397 seconds (-33% from base) The payload size reduction we see in `test-bookmarks-pushpull.t` comes from a more aggressive filter of nullid and is harmless.

Boris Feld - - Load All Authors

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      # showstack.py - extension to dump a Python stack trace on signal

      #

      # binds to both SIGQUIT (Ctrl-\) and SIGINFO (Ctrl-T on BSDs)

      """dump stack trace when receiving SIGQUIT (Ctrl-\) and SIGINFO (Ctrl-T on BSDs)

      """

      from __future__ import absolute_import

      import signal

      import sys

      import traceback

      def sigshow(*args):

          sys.stderr.write("\n")

          traceback.print_stack(args[1], limit=10, file=sys.stderr)

          sys.stderr.write("----\n")

      def extsetup(ui):

          signal.signal(signal.SIGQUIT, sigshow)

          try:

              signal.signal(signal.SIGINFO, sigshow)

          except AttributeError:

              pass

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				# showstack.py - extension to dump a Python stack trace on signal
				#
				# binds to both SIGQUIT (Ctrl-\) and SIGINFO (Ctrl-T on BSDs)
				"""dump stack trace when receiving SIGQUIT (Ctrl-\) and SIGINFO (Ctrl-T on BSDs)
				"""

				from __future__ import absolute_import
				import signal
				import sys
				import traceback

				def sigshow(*args):
				sys.stderr.write("\n")
				traceback.print_stack(args[1], limit=10, file=sys.stderr)
				sys.stderr.write("----\n")

				def extsetup(ui):
				signal.signal(signal.SIGQUIT, sigshow)
				try:
				signal.signal(signal.SIGINFO, sigshow)
				except AttributeError:
				pass