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Date: Wed, 14 Feb 2018 17:45:35 -0500
From: Lucas Bates <lucasb@...atatu.com>
To: "Brenda J. Butler" <bjb@...atatu.com>
Cc: davem@...emloft.net, kernel@...atatu.com,
Cong Wang <xiyou.wangcong@...il.com>,
Jiri Pirko <jiri@...nulli.us>, Chris Mi <chrism@...lanox.com>,
Linux Kernel Network Developers <netdev@...r.kernel.org>
Subject: Re: [PATCH net-next 6/7] tools: tc-testing: valgrindPlugin
On Wed, Feb 14, 2018 at 2:09 PM, Brenda J. Butler <bjb@...atatu.com> wrote:
> Run the command under test under valgrind. Produce an extra set of
> tap output for the memory check on each test.
>
> Signed-off-by: Brenda J. Butler <bjb@...atatu.com>
Acked-by: Lucas Bates <lucasb@...atatu.com>
> ---
> .../tc-testing/plugin-lib/valgrindPlugin.py | 142 +++++++++++++++++++++
> 1 file changed, 142 insertions(+)
> create mode 100644 tools/testing/selftests/tc-testing/plugin-lib/valgrindPlugin.py
>
> diff --git a/tools/testing/selftests/tc-testing/plugin-lib/valgrindPlugin.py b/tools/testing/selftests/tc-testing/plugin-lib/valgrindPlugin.py
> new file mode 100644
> index 000000000000..477a7bd7d7fb
> --- /dev/null
> +++ b/tools/testing/selftests/tc-testing/plugin-lib/valgrindPlugin.py
> @@ -0,0 +1,142 @@
> +'''
> +run the command under test, under valgrind and collect memory leak info
> +as a separate test.
> +'''
> +
> +
> +import os
> +import re
> +import signal
> +from string import Template
> +import subprocess
> +import time
> +from TdcPlugin import TdcPlugin
> +
> +from tdc_config import *
> +
> +def vp_extract_num_from_string(num_as_string_maybe_with_commas):
> + return int(num_as_string_maybe_with_commas.replace(',',''))
> +
> +class SubPlugin(TdcPlugin):
> + def __init__(self):
> + self.sub_class = 'valgrind/SubPlugin'
> + self.tap = ''
> + super().__init__()
> +
> + def pre_suite(self, testcount, testidlist):
> + '''run commands before test_runner goes into a test loop'''
> + super().pre_suite(testcount, testidlist)
> + if self.args.verbose > 1:
> + print('{}.pre_suite'.format(self.sub_class))
> + if self.args.valgrind:
> + self._add_to_tap('1..{}\n'.format(self.testcount))
> +
> + def post_suite(self, index):
> + '''run commands after test_runner goes into a test loop'''
> + super().post_suite(index)
> + self._add_to_tap('\n|---\n')
> + if self.args.verbose > 1:
> + print('{}.post_suite'.format(self.sub_class))
> + print('{}'.format(self.tap))
> + if self.args.verbose < 4:
> + subprocess.check_output('rm -f vgnd-*.log', shell=True)
> +
> + def add_args(self, parser):
> + super().add_args(parser)
> + self.argparser_group = self.argparser.add_argument_group(
> + 'valgrind',
> + 'options for valgrindPlugin (run command under test under Valgrind)')
> +
> + self.argparser_group.add_argument(
> + '-V', '--valgrind', action='store_true',
> + help='Run commands under valgrind')
> +
> + return self.argparser
> +
> + def adjust_command(self, stage, command):
> + super().adjust_command(stage, command)
> + cmdform = 'list'
> + cmdlist = list()
> +
> + if not self.args.valgrind:
> + return command
> +
> + if self.args.verbose > 1:
> + print('{}.adjust_command'.format(self.sub_class))
> +
> + if not isinstance(command, list):
> + cmdform = 'str'
> + cmdlist = command.split()
> + else:
> + cmdlist = command
> +
> + if stage == 'execute':
> + if self.args.verbose > 1:
> + print('adjust_command: stage is {}; inserting valgrind stuff in command [{}] list [{}]'.
> + format(stage, command, cmdlist))
> + cmdlist.insert(0, '--track-origins=yes')
> + cmdlist.insert(0, '--show-leak-kinds=definite,indirect')
> + cmdlist.insert(0, '--leak-check=full')
> + cmdlist.insert(0, '--log-file=vgnd-{}.log'.format(self.args.testid))
> + cmdlist.insert(0, '-v') # ask for summary of non-leak errors
> + cmdlist.insert(0, ENVIR['VALGRIND_BIN'])
> + else:
> + pass
> +
> + if cmdform == 'str':
> + command = ' '.join(cmdlist)
> + else:
> + command = cmdlist
> +
> + if self.args.verbose > 1:
> + print('adjust_command: return command [{}]'.format(command))
> + return command
> +
> + def post_execute(self):
> + if not self.args.valgrind:
> + return
> +
> + self.definitely_lost_re = re.compile(
> + r'definitely lost:\s+([,0-9]+)\s+bytes in\s+([,0-9]+)\sblocks', re.MULTILINE | re.DOTALL)
> + self.indirectly_lost_re = re.compile(
> + r'indirectly lost:\s+([,0-9]+)\s+bytes in\s+([,0-9]+)\s+blocks', re.MULTILINE | re.DOTALL)
> + self.possibly_lost_re = re.compile(
> + r'possibly lost:\s+([,0-9]+)bytes in\s+([,0-9]+)\s+blocks', re.MULTILINE | re.DOTALL)
> + self.non_leak_error_re = re.compile(
> + r'ERROR SUMMARY:\s+([,0-9]+) errors from\s+([,0-9]+)\s+contexts', re.MULTILINE | re.DOTALL)
> +
> + def_num = 0
> + ind_num = 0
> + pos_num = 0
> + nle_num = 0
> +
> + # what about concurrent test runs? Maybe force them to be in different directories?
> + with open('vgnd-{}.log'.format(self.args.testid)) as vfd:
> + content = vfd.read()
> + def_mo = self.definitely_lost_re.search(content)
> + ind_mo = self.indirectly_lost_re.search(content)
> + pos_mo = self.possibly_lost_re.search(content)
> + nle_mo = self.non_leak_error_re.search(content)
> +
> + if def_mo:
> + def_num = int(def_mo.group(2))
> + if ind_mo:
> + ind_num = int(ind_mo.group(2))
> + if pos_mo:
> + pos_num = int(pos_mo.group(2))
> + if nle_mo:
> + nle_num = int(nle_mo.group(1))
> +
> + mem_results = ''
> + if (def_num > 0) or (ind_num > 0) or (pos_num > 0) or (nle_num > 0):
> + mem_results += 'not '
> +
> + mem_results += 'ok {} - {}-mem # {}\n'.format(
> + self.args.test_ordinal, self.args.testid, 'memory leak check')
> + self._add_to_tap(mem_results)
> + if mem_results.startswith('not '):
> + print('{}'.format(content))
> + self._add_to_tap(content)
> +
> + def _add_to_tap(self, more_tap_output):
> + self.tap += more_tap_output
> --
> 2.15.1
>
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