"""Test lldb's stepping speed.""" | |
import os, sys | |
import unittest2 | |
import lldb | |
from lldbbench import * | |
class SteppingSpeedBench(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 = 50 | |
#print "self.exe=%s" % self.exe | |
#print "self.break_spec=%s" % self.break_spec | |
@benchmarks_test | |
def test_run_lldb_steppings(self): | |
"""Test lldb steppings on a large executable.""" | |
self.run_lldb_steppings(self.exe, self.break_spec, self.count) | |
print "lldb stepping benchmark:", self.stopwatch | |
def run_lldb_steppings(self, exe, break_spec, count): | |
import pexpect | |
# Set self.child_prompt, which is "(lldb) ". | |
self.child_prompt = '(lldb) ' | |
prompt = self.child_prompt | |
# 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 | |
child.expect_exact(prompt) | |
child.sendline('breakpoint set %s' % break_spec) | |
child.expect_exact(prompt) | |
child.sendline('run') | |
child.expect_exact(prompt) | |
# Reset the stopwatch now. | |
self.stopwatch.reset() | |
for i in range(count): | |
with self.stopwatch: | |
# Disassemble the function. | |
child.sendline('next') # Aka 'thread step-over'. | |
child.expect_exact(prompt) | |
child.sendline('quit') | |
try: | |
self.child.expect(pexpect.EOF) | |
except: | |
pass | |
self.child = None | |
if __name__ == '__main__': | |
import atexit | |
lldb.SBDebugger.Initialize() | |
atexit.register(lambda: lldb.SBDebugger.Terminate()) | |
unittest2.main() |