1 """Test lldb's stepping speed.""" 2 3 import os, sys 4 import unittest2 5 import lldb 6 import pexpect 7 from lldbbench import * 8 9 class RunHooksThenSteppingsBench(BenchBase): 10 11 mydir = os.path.join("benchmarks", "stepping") 12 13 def setUp(self): 14 BenchBase.setUp(self) 15 self.count = lldb.bmIterationCount 16 if self.count <= 0: 17 self.count = 50 18 19 @benchmarks_test 20 def test_lldb_runhooks_then_steppings(self): 21 """Test lldb steppings on a large executable.""" 22 print 23 self.run_lldb_runhooks_then_steppings(self.count) 24 print "lldb stepping benchmark:", self.stopwatch 25 26 def run_lldb_runhooks_then_steppings(self, count): 27 # Set self.child_prompt, which is "(lldb) ". 28 self.child_prompt = '(lldb) ' 29 prompt = self.child_prompt 30 31 self.child = pexpect.spawn('%s %s' % (self.lldbHere, self.lldbOption)) 32 self.child.expect_exact(prompt) 33 # So that the child gets torn down after the test. 34 child = self.child 35 36 # Turn on logging for what the child sends back. 37 if self.TraceOn(): 38 child.logfile_read = sys.stdout 39 40 #lldb.runHooks = ['process attach -n Mail'] 41 42 # Perform the run hooks to bring lldb debugger to the desired state. 43 self.runHooks(child=child, child_prompt=prompt) 44 45 # Reset the stopwatch now. 46 self.stopwatch.reset() 47 for i in range(count): 48 with self.stopwatch: 49 # Step through the function. 50 child.sendline('next') # Aka 'thread step-over'. 51 child.expect_exact(prompt) 52 53 child.sendline('quit') 54 try: 55 self.child.expect(pexpect.EOF) 56 except: 57 pass 58 59 self.child = None 60 61 62 if __name__ == '__main__': 63 import atexit 64 lldb.SBDebugger.Initialize() 65 atexit.register(lambda: lldb.SBDebugger.Terminate()) 66 unittest2.main() 67
