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

hgk: simplify tags parser...

hgk: simplify tags parser As when hg tags is being called without -v option, it returns lines with two elements in each, we can just interate them as if it were a usual Tcl list using foreach and two variables. Line endings and whitespace don't matter when doing so, so we may keep them as is. When we're processing the lines, tag variable is assigned a tag name, and rev is a string in form of revision:hash which we can split on colon. As Tcl8.4 lacks lassign command, and using lindex makes code a bit less readable, we use foreach to iterate over two-element list.

Matt Mackall - - Load All Authors

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      # memory.py - track memory usage

      #

      # Copyright 2009 Matt Mackall <mpm@selenic.com> and others

      #

      # This software may be used and distributed according to the terms of the

      # GNU General Public License version 2 or any later version.

      '''helper extension to measure memory usage

      Reads current and peak memory usage from ``/proc/self/status`` and

      prints it to ``stderr`` on exit.

      '''

      import atexit

      def memusage(ui):

          """Report memory usage of the current process."""

          status = None

          result = {'peak': 0, 'rss': 0}

          try:

              # This will only work on systems with a /proc file system

              # (like Linux).

              status = open('/proc/self/status', 'r')

              for line in status:

                  parts = line.split()

                  key = parts[0][2:-1].lower()

                  if key in result:

                      result[key] = int(parts[1])

          finally:

              if status is not None:

                  status.close()

          ui.write_err(", ".join(["%s: %.1f MiB" % (key, value / 1024.0)

                                  for key, value in result.iteritems()]) + "\n")

      def extsetup(ui):

          atexit.register(memusage, ui)

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				# memory.py - track memory usage
				#
				# Copyright 2009 Matt Mackall <mpm@selenic.com> and others
				#
				# This software may be used and distributed according to the terms of the
				# GNU General Public License version 2 or any later version.

				'''helper extension to measure memory usage

				Reads current and peak memory usage from ``/proc/self/status`` and
				prints it to ``stderr`` on exit.
				'''

				import atexit

				def memusage(ui):
				"""Report memory usage of the current process."""
				status = None
				result = {'peak': 0, 'rss': 0}
				try:
				# This will only work on systems with a /proc file system
				# (like Linux).
				status = open('/proc/self/status', 'r')
				for line in status:
				parts = line.split()
				key = parts[0][2:-1].lower()
				if key in result:
				result[key] = int(parts[1])
				finally:
				if status is not None:
				status.close()
				ui.write_err(", ".join(["%s: %.1f MiB" % (key, value / 1024.0)
				for key, value in result.iteritems()]) + "\n")

				def extsetup(ui):
				atexit.register(memusage, ui)