| """Test lldb's stepping speed.""" |
| |
| import os, sys |
| import unittest2 |
| import lldb |
| import pexpect |
| from lldbbench import * |
| |
| class SteppingSpeedBench(BenchBase): |
| |
| mydir = os.path.join("benchmarks", "stepping") |
| |
| def setUp(self): |
| BenchBase.setUp(self) |
| 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 = 50 |
| |
| #print "self.exe=%s" % self.exe |
| #print "self.break_spec=%s" % self.break_spec |
| |
| @benchmarks_test |
| def test_run_lldb_steppings(self): |
| """Test lldb steppings on a large executable.""" |
| print |
| 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): |
| # 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' % (self.lldbHere, 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() |
