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# Copyright (C) 2016 Red Hat, Inc. # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU Library General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. """Various utility functions, and a utility class.""" from __future__ import absolute_import from __future__ import unicode_literals from dnf.cli.format import format_number from dnf.i18n import _ import dnf.util import logging import os import time _USER_HZ = os.sysconf(os.sysconf_names['SC_CLK_TCK']) logger = logging.getLogger('dnf') def jiffies_to_seconds(jiffies): """Convert a number of jiffies to seconds. How many jiffies are in a second is system-dependent, e.g. 100 jiffies = 1 second is common. :param jiffies: a number of jiffies :return: the equivalent number of seconds """ return int(jiffies) / _USER_HZ def seconds_to_ui_time(seconds): """Return a human-readable string representation of the length of a time interval given in seconds. :param seconds: the length of the time interval in seconds :return: a human-readable string representation of the length of the time interval """ if seconds >= 60 * 60 * 24: return "%d day(s) %d:%02d:%02d" % (seconds // (60 * 60 * 24), (seconds // (60 * 60)) % 24, (seconds // 60) % 60, seconds % 60) if seconds >= 60 * 60: return "%d:%02d:%02d" % (seconds // (60 * 60), (seconds // 60) % 60, (seconds % 60)) return "%02d:%02d" % ((seconds // 60), seconds % 60) def get_process_info(pid): """Return info dict about a process.""" pid = int(pid) # Maybe true if /proc isn't mounted, or not Linux ... or something. if (not os.path.exists("/proc/%d/status" % pid) or not os.path.exists("/proc/stat") or not os.path.exists("/proc/%d/stat" % pid)): return ps = {} with open("/proc/%d/status" % pid) as status_file: for line in status_file: if line[-1] != '\n': continue data = line[:-1].split(':\t', 1) if len(data) < 2: continue data[1] = dnf.util.rtrim(data[1], ' kB') ps[data[0].strip().lower()] = data[1].strip() if 'vmrss' not in ps: return if 'vmsize' not in ps: return boot_time = None with open("/proc/stat") as stat_file: for line in stat_file: if line.startswith("btime "): boot_time = int(line[len("btime "):-1]) break if boot_time is None: return with open('/proc/%d/stat' % pid) as stat_file: ps_stat = stat_file.read().split() ps['start_time'] = boot_time + jiffies_to_seconds(ps_stat[21]) ps['state'] = {'R' : _('Running'), 'S' : _('Sleeping'), 'D' : _('Uninterruptible'), 'Z' : _('Zombie'), 'T' : _('Traced/Stopped') }.get(ps_stat[2], _('Unknown')) return ps def show_lock_owner(pid): """Output information about process holding a lock.""" ps = get_process_info(pid) if not ps: msg = _('Unable to find information about the locking process (PID %d)') logger.critical(msg, pid) return msg = _(' The application with PID %d is: %s') % (pid, ps['name']) logger.critical("%s", msg) logger.critical(_(" Memory : %5s RSS (%5sB VSZ)"), format_number(int(ps['vmrss']) * 1024), format_number(int(ps['vmsize']) * 1024)) ago = seconds_to_ui_time(int(time.time()) - ps['start_time']) logger.critical(_(' Started: %s - %s ago'), dnf.util.normalize_time(ps['start_time']), ago) logger.critical(_(' State : %s'), ps['state']) return
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