"""Test lldb's startup delays creating a target, setting a breakpoint, and run to breakpoint stop.""" | |
import os, sys | |
import unittest2 | |
import lldb | |
from lldbbench import * | |
class StartupDelaysBench(BenchBase): | |
mydir = TestBase.compute_mydir(__file__) | |
def setUp(self): | |
BenchBase.setUp(self) | |
# Create self.stopwatch2 for measuring "set first breakpoint". | |
# The default self.stopwatch is for "create fresh target". | |
self.stopwatch2 = Stopwatch() | |
# Create self.stopwatch3 for measuring "run to breakpoint". | |
self.stopwatch3 = Stopwatch() | |
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 = 30 | |
@benchmarks_test | |
def test_startup_delay(self): | |
"""Test start up delays creating a target, setting a breakpoint, and run to breakpoint stop.""" | |
self.run_startup_delays_bench(self.exe, self.break_spec, self.count) | |
print "lldb startup delay (create fresh target) benchmark:", self.stopwatch | |
print "lldb startup delay (set first breakpoint) benchmark:", self.stopwatch2 | |
print "lldb startup delay (run to breakpoint) benchmark:", self.stopwatch3 | |
def run_startup_delays_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() | |
self.stopwatch2.reset() | |
for i in range(count): | |
# So that the child gets torn down after the test. | |
self.child = pexpect.spawn('%s %s' % (self.lldbHere, self.lldbOption)) | |
child = self.child | |
# Turn on logging for what the child sends back. | |
if self.TraceOn(): | |
child.logfile_read = sys.stdout | |
with self.stopwatch: | |
# Create a fresh target. | |
child.sendline('file %s' % exe) # Aka 'target create'. | |
child.expect_exact(prompt) | |
with self.stopwatch2: | |
# Read debug info and set the first breakpoint. | |
child.sendline('breakpoint set %s' % break_spec) | |
child.expect_exact(prompt) | |
with self.stopwatch3: | |
# Run to the breakpoint just set. | |
child.sendline('run') | |
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() |