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#!/usr/bin/env python3
import os.path
import subprocess as sp
from time import sleep
from runtest import TestBase
class TestCase(TestBase):
"""Test changing the tracing depth in the target from the agent.
The target itself has an original depth limit of 4. We decrease the depth to
2 and then increase the depth to 5."""
def __init__(self):
TestBase.__init__(self, 'agent', """
# DURATION TID FUNCTION
[ 14634] | main() {
[ 14634] | func() {
[ 14634] | a() {
0.135 us [ 14634] | b();
0.524 us [ 14634] | } /* a */
0.732 us [ 14634] | } /* func */
0.279 us [ 14634] | func();
[ 14634] | func() {
[ 14634] | a() {
[ 14634] | b() {
0.074 us [ 14634] | c();
0.674 us [ 14634] | } /* b */
0.874 us [ 14634] | } /* a */
1.098 us [ 14634] | } /* func */
37.807 ms [ 14634] | } /* main */
""")
def client_send_command(self, pid, option):
self.subcmd = 'live'
self.option = '-p %d %s' % (pid, option)
self.exearg = ''
client_cmd = self.runcmd()
self.pr_debug('prerun command: ' + client_cmd)
client_p = sp.run(client_cmd.split())
return client_p.returncode
def prerun(self, timeout):
self.subcmd = 'record'
self.option = '--keep-pid'
self.option += ' --agent'
self.option += ' --no-libcall'
self.option += ' -D 4'
self.exearg = 't-' + self.name
record_cmd = self.runcmd()
self.pr_debug("prerun command: " + record_cmd)
# bufsize=0 to write characters one by one
record_p = sp.Popen(record_cmd.split(), stdin=sp.PIPE, stderr=sp.PIPE, bufsize=0)
while not os.path.exists("/tmp/uftrace/%d.socket" % record_p.pid):
sleep(.01)
if self.client_send_command(record_p.pid, '--depth=2') != 0:
return TestBase.TEST_NONZERO_RETURN
record_p.stdin.write(b'0')
if self.client_send_command(record_p.pid, '--depth=5') != 0:
return TestBase.TEST_NONZERO_RETURN
record_p.stdin.write(b'0')
record_p.stdin.close()
record_p.wait()
return TestBase.TEST_SUCCESS
def setup(self):
self.subcmd = 'replay'
self.option = ''
self.exearg = ''
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