| """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 = lldbtest_config.lldbExec | |
| 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 | |
| @expectedFailureWindows("llvm.org/pr22274: need a pexpect replacement for windows") | |
| 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' % (lldbtest_config.lldbExec, 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() |