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"""Disassemble lldb's Driver::MainLoop() functions comparing Xcode 4.1 vs. 4.2's gdb."""
from __future__ import print_function
import os, sys
import lldb
from lldbsuite.test import configuration
from lldbsuite.test.lldbbench import *
class XCode41Vs42GDBDisassembly(BenchBase):
mydir = TestBase.compute_mydir(__file__)
def setUp(self):
BenchBase.setUp(self)
self.gdb_41_exe = '/Xcode41/usr/bin/gdb'
self.gdb_42_exe = '/Developer/usr/bin/gdb'
self.exe = lldbtest_config.lldbExec
self.function = 'Driver::MainLoop()'
self.gdb_41_avg = None
self.gdb_42_avg = None
self.count = 5
@benchmarks_test
@no_debug_info_test
@expectedFailureWindows("llvm.org/pr22274: need a pexpect replacement for windows")
def test_run_41_then_42(self):
"""Test disassembly on a large function with 4.1 vs. 4.2's gdb."""
print()
self.run_gdb_disassembly(self.gdb_41_exe, self.exe, self.function, self.count)
print("4.1 gdb benchmark:", self.stopwatch)
self.gdb_41_avg = self.stopwatch.avg()
self.run_gdb_disassembly(self.gdb_42_exe, self.exe, self.function, self.count)
print("4.2 gdb benchmark:", self.stopwatch)
self.gdb_42_avg = self.stopwatch.avg()
print("gdb_42_avg/gdb_41_avg: %f" % (self.gdb_42_avg/self.gdb_41_avg))
@benchmarks_test
@no_debug_info_test
@expectedFailureWindows("llvm.org/pr22274: need a pexpect replacement for windows")
def test_run_42_then_41(self):
"""Test disassembly on a large function with 4.1 vs. 4.2's gdb."""
print()
self.run_gdb_disassembly(self.gdb_42_exe, self.exe, self.function, self.count)
print("4.2 gdb benchmark:", self.stopwatch)
self.gdb_42_avg = self.stopwatch.avg()
self.run_gdb_disassembly(self.gdb_41_exe, self.exe, self.function, self.count)
print("4.1 gdb benchmark:", self.stopwatch)
self.gdb_41_avg = self.stopwatch.avg()
print("gdb_42_avg/gdb_41_avg: %f" % (self.gdb_42_avg/self.gdb_41_avg))
def run_gdb_disassembly(self, gdb_exe_path, exe, function, count):
import pexpect
# Set self.child_prompt, which is "(gdb) ".
self.child_prompt = '(gdb) '
prompt = self.child_prompt
# So that the child gets torn down after the test.
self.child = pexpect.spawn('%s --nx %s' % (gdb_exe_path, 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('break %s' % function)
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('disassemble')
child.expect_exact(prompt)
child.sendline('next')
child.expect_exact(prompt)
child.sendline('quit')
child.expect_exact('The program is running. Exit anyway?')
child.sendline('y')
try:
self.child.expect(pexpect.EOF)
except:
pass
if self.TraceOn():
print("gdb disassembly benchmark:", str(self.stopwatch))
self.child = None
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