"""Test lldb's response time for 'frame variable' command.""" | |
import os, sys | |
import unittest2 | |
import lldb | |
from lldbbench import * | |
class FrameVariableResponseBench(BenchBase): | |
mydir = TestBase.compute_mydir(__file__) | |
def setUp(self): | |
BenchBase.setUp(self) | |
if lldb.bmExecutable: | |
self.exe = lldb.bmExecutable | |
else: | |
self.exe = self.lldbHere | |
if lldb.bmBreakpointSpec: | |
self.break_spec = lldb.bmBreakpointSpec | |
else: | |
self.break_spec = '-n main' | |
self.count = lldb.bmIterationCount | |
if self.count <= 0: | |
self.count = 20 | |
@benchmarks_test | |
def test_startup_delay(self): | |
"""Test response time for the 'frame variable' command.""" | |
self.run_frame_variable_bench(self.exe, self.break_spec, self.count) | |
print "lldb frame variable benchmark:", self.stopwatch | |
def run_frame_variable_bench(self, exe, break_spec, count): | |
import pexpect | |
# Set self.child_prompt, which is "(lldb) ". | |
self.child_prompt = '(lldb) ' | |
prompt = self.child_prompt | |
# Reset the stopwatchs now. | |
self.stopwatch.reset() | |
for i in range(count): | |
# So that the child gets torn down after the test. | |
self.child = pexpect.spawn('%s %s %s' % (self.lldbHere, self.lldbOption, exe)) | |
child = self.child | |
# Turn on logging for what the child sends back. | |
if self.TraceOn(): | |
child.logfile_read = sys.stdout | |
# Set our breakpoint. | |
child.sendline('breakpoint set %s' % break_spec) | |
child.expect_exact(prompt) | |
# Run the target and expect it to be stopped due to breakpoint. | |
child.sendline('run') # Aka 'process launch'. | |
child.expect_exact(prompt) | |
with self.stopwatch: | |
# Measure the 'frame variable' response time. | |
child.sendline('frame variable') | |
child.expect_exact(prompt) | |
child.sendline('quit') | |
try: | |
self.child.expect(pexpect.EOF) | |
except: | |
pass | |
# The test is about to end and if we come to here, the child process has | |
# been terminated. Mark it so. | |
self.child = None | |
if __name__ == '__main__': | |
import atexit | |
lldb.SBDebugger.Initialize() | |
atexit.register(lambda: lldb.SBDebugger.Terminate()) | |
unittest2.main() |