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#!/usr/bin/env python3
import os
import subprocess as sp
from runtest import TestBase
class TestCase(TestBase):
def __init__(self):
TestBase.__init__(self, 'fork', serial=True, result="""
# DURATION TID FUNCTION
[ 1661] | main() {
[ 1661] | fork() {
5.135 us [ 1661] | sys_writev();
32.391 us [ 1661] | sys_clone();
130.930 us [ 1661] | } /* fork */
[ 1661] | wait() {
7.074 us [ 1661] | sys_wait4();
691.873 us [ 1661] | } /* wait */
[ 1661] | a() {
[ 1661] | b() {
[ 1661] | c() {
4.234 us [ 1661] | getpid();
5.680 us [ 1661] | } /* c */
6.094 us [ 1661] | } /* b */
6.602 us [ 1661] | } /* a */
849.948 us [ 1661] | } /* main */
""")
def prerun(self, timeout):
if os.geteuid() != 0:
return TestBase.TEST_SKIP
if os.path.exists('/.dockerenv'):
return TestBase.TEST_SKIP
self.subcmd = 'record'
self.option = '-k --match glob '
self.option += '-N *page_fault@kernel'
record_cmd = self.runcmd()
sp.call(record_cmd.split())
return TestBase.TEST_SUCCESS
def setup(self):
t = 0
for ln in open(os.path.join('uftrace.data', 'task.txt')):
if not ln.startswith('TASK'):
continue
try:
t = int(ln.split()[2].split('=')[1])
except:
pass
if t == 0:
self.subcmd = 'FAILED TO FIND TID'
return
self.subcmd = 'replay'
self.option = '-k --tid %d' % t
def fixup(self, cflags, result):
result = result.replace(" [ 1661] | fork() {",
"""\
[ 1661] | fork() {
5.135 us [ 1661] | sys_getpid();""")
result = result.replace(" 4.234 us [ 1661] | getpid();",
"""\
[ 1661] | getpid() {
3.328 us [ 1661] | sys_getpid();
4.234 us [ 1661] | } /* getpid */""")
uname = os.uname()
# Later version changed syscall routines
major, minor, release = uname[2].split('.', 2)
if uname[0] == 'Linux' and uname[4] == 'x86_64':
if int(major) == 6 and int(minor) >= 9:
import re
result = re.sub(r'sys_[^( ]*', 'x64_sys_call', result)
elif int(major) >= 5 or (int(major) == 4 and int(minor) >= 17):
result = result.replace('sys_', '__x64_sys_')
return result
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