tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1'''
2run the command under test, under valgrind and collect memory leak info
3as a separate test.
4'''
5
6
7import os
8import re
9import signal
10from string import Template
11import subprocess
12import time
13from TdcPlugin import TdcPlugin
14from TdcResults import *
15
16from tdc_config import *
17
18def vp_extract_num_from_string(num_as_string_maybe_with_commas):
19 return int(num_as_string_maybe_with_commas.replace(',',''))
20
21class SubPlugin(TdcPlugin):
22 def __init__(self):
23 self.sub_class = 'valgrind/SubPlugin'
24 self.tap = ''
25 self._tsr = TestSuiteReport()
26 super().__init__()
27
28 def pre_suite(self, testcount, testidlist):
29 '''run commands before test_runner goes into a test loop'''
30 super().pre_suite(testcount, testidlist)
31 if self.args.verbose > 1:
32 print('{}.pre_suite'.format(self.sub_class))
33 if self.args.valgrind:
34 self._add_to_tap('1..{}\n'.format(self.testcount))
35
36 def post_suite(self, index):
37 '''run commands after test_runner goes into a test loop'''
38 super().post_suite(index)
39 if self.args.verbose > 1:
40 print('{}.post_suite'.format(self.sub_class))
41 #print('{}'.format(self.tap))
42 for xx in range(index - 1, self.testcount):
43 res = TestResult('{}-mem'.format(self.testidlist[xx]), 'Test skipped')
44 res.set_result(ResultState.skip)
45 res.set_errormsg('Skipped because of prior setup/teardown failure')
46 self._add_results(res)
47 if self.args.verbose < 4:
48 subprocess.check_output('rm -f vgnd-*.log', shell=True)
49
50 def add_args(self, parser):
51 super().add_args(parser)
52 self.argparser_group = self.argparser.add_argument_group(
53 'valgrind',
54 'options for valgrindPlugin (run command under test under Valgrind)')
55
56 self.argparser_group.add_argument(
57 '-V', '--valgrind', action='store_true',
58 help='Run commands under valgrind')
59
60 return self.argparser
61
62 def adjust_command(self, stage, command):
63 super().adjust_command(stage, command)
64 cmdform = 'list'
65 cmdlist = list()
66
67 if not self.args.valgrind:
68 return command
69
70 if self.args.verbose > 1:
71 print('{}.adjust_command'.format(self.sub_class))
72
73 if not isinstance(command, list):
74 cmdform = 'str'
75 cmdlist = command.split()
76 else:
77 cmdlist = command
78
79 if stage == 'execute':
80 if self.args.verbose > 1:
81 print('adjust_command: stage is {}; inserting valgrind stuff in command [{}] list [{}]'.
82 format(stage, command, cmdlist))
83 cmdlist.insert(0, '--track-origins=yes')
84 cmdlist.insert(0, '--show-leak-kinds=definite,indirect')
85 cmdlist.insert(0, '--leak-check=full')
86 cmdlist.insert(0, '--log-file=vgnd-{}.log'.format(self.args.testid))
87 cmdlist.insert(0, '-v') # ask for summary of non-leak errors
88 cmdlist.insert(0, ENVIR['VALGRIND_BIN'])
89 else:
90 pass
91
92 if cmdform == 'str':
93 command = ' '.join(cmdlist)
94 else:
95 command = cmdlist
96
97 if self.args.verbose > 1:
98 print('adjust_command: return command [{}]'.format(command))
99 return command
100
101 def post_execute(self):
102 if not self.args.valgrind:
103 return
104
105 res = TestResult('{}-mem'.format(self.args.testid),
106 '{} memory leak check'.format(self.args.test_name))
107 if self.args.test_skip:
108 res.set_result(ResultState.skip)
109 res.set_errormsg('Test case designated as skipped.')
110 self._add_results(res)
111 return
112
113 self.definitely_lost_re = re.compile(
114 r'definitely lost:\s+([,0-9]+)\s+bytes in\s+([,0-9]+)\sblocks', re.MULTILINE | re.DOTALL)
115 self.indirectly_lost_re = re.compile(
116 r'indirectly lost:\s+([,0-9]+)\s+bytes in\s+([,0-9]+)\s+blocks', re.MULTILINE | re.DOTALL)
117 self.possibly_lost_re = re.compile(
118 r'possibly lost:\s+([,0-9]+)bytes in\s+([,0-9]+)\s+blocks', re.MULTILINE | re.DOTALL)
119 self.non_leak_error_re = re.compile(
120 r'ERROR SUMMARY:\s+([,0-9]+) errors from\s+([,0-9]+)\s+contexts', re.MULTILINE | re.DOTALL)
121
122 def_num = 0
123 ind_num = 0
124 pos_num = 0
125 nle_num = 0
126
127 # what about concurrent test runs? Maybe force them to be in different directories?
128 with open('vgnd-{}.log'.format(self.args.testid)) as vfd:
129 content = vfd.read()
130 def_mo = self.definitely_lost_re.search(content)
131 ind_mo = self.indirectly_lost_re.search(content)
132 pos_mo = self.possibly_lost_re.search(content)
133 nle_mo = self.non_leak_error_re.search(content)
134
135 if def_mo:
136 def_num = int(def_mo.group(2))
137 if ind_mo:
138 ind_num = int(ind_mo.group(2))
139 if pos_mo:
140 pos_num = int(pos_mo.group(2))
141 if nle_mo:
142 nle_num = int(nle_mo.group(1))
143
144 mem_results = ''
145 if (def_num > 0) or (ind_num > 0) or (pos_num > 0) or (nle_num > 0):
146 mem_results += 'not '
147 res.set_result(ResultState.fail)
148 res.set_failmsg('Memory leak detected')
149 res.append_failmsg(content)
150 else:
151 res.set_result(ResultState.success)
152
153 self._add_results(res)
154
155
156 def _add_results(self, res):
157 self._tsr.add_resultdata(res)
158
159 def _add_to_tap(self, more_tap_output):
160 self.tap += more_tap_output