| """Disassemble lldb's Driver::MainLoop() functions comparing Xcode 4.1 vs. 4.2's gdb.""" |
| |
| from __future__ import print_function |
| |
| |
| import os |
| import sys |
| import lldb |
| from lldbsuite.test.decorators import * |
| from lldbsuite.test.lldbbench import * |
| from lldbsuite.test.lldbtest import * |
| from lldbsuite.test import configuration |
| from lldbsuite.test import lldbutil |
| |
| |
| 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 |
| @expectedFailureAll( |
| oslist=["windows"], |
| bugnumber="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 |
| @expectedFailureAll( |
| oslist=["windows"], |
| bugnumber="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 |
