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

rust-status: cap the number of concurrent threads to 16...

rust-status: cap the number of concurrent threads to 16 During benchmarking it was determined that the use of more threads is very advantageous... until we use more than 16. This is most likely due to some resource contention (thrashing, etc.). Until we have time to figure out and fix the underlying cause, let's just cap at 16 threads. Differential Revision: https://phab.mercurial-scm.org/D12384

Gregory Szorc - - Load All Authors

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             showstack.py
        
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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)

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

      """

      from __future__ import absolute_import, print_function

      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 sigexit(*args):

          sigshow(*args)

          print('alarm!')

          sys.exit(1)

      def extsetup(ui):

          signal.signal(signal.SIGQUIT, sigshow)

          signal.signal(signal.SIGALRM, sigexit)

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

				from __future__ import absolute_import, print_function
				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 sigexit(*args):
				sigshow(*args)
				print('alarm!')
				sys.exit(1)


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