TestStartupDelays.py [plain text]
"""Test lldb's startup delays creating a target, setting a breakpoint, and run to breakpoint stop."""
import os, sys
import unittest2
import lldb
import pexpect
from lldbbench import *
class StartupDelaysBench(BenchBase):
mydir = os.path.join("benchmarks", "startup")
def setUp(self):
BenchBase.setUp(self)
self.stopwatch2 = Stopwatch()
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."""
print
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):
self.child_prompt = '(lldb) '
prompt = self.child_prompt
self.stopwatch.reset()
self.stopwatch2.reset()
for i in range(count):
self.child = pexpect.spawn('%s %s' % (self.lldbHere, self.lldbOption))
child = self.child
if self.TraceOn():
child.logfile_read = sys.stdout
with self.stopwatch:
child.sendline('file %s' % exe) child.expect_exact(prompt)
with self.stopwatch2:
child.sendline('breakpoint set %s' % break_spec)
child.expect_exact(prompt)
with self.stopwatch3:
child.sendline('run')
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()