66d362e9bf
inferior program for the lldb debugger to operate on. The fixed lldb executable corresponds to r142902. Plus some minor modifications to the test benchmark to conform to way bench.py is meant to be invoked. llvm-svn: 143075
76 lines
2.6 KiB
Python
76 lines
2.6 KiB
Python
"""Test lldb's disassemblt speed. This bench deliberately attaches to an lldb
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inferior and traverses the stack for thread0 to arrive at frame with function
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'MainLoop'. It is important to specify an lldb executable as the inferior."""
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import os, sys
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import unittest2
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import lldb
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import pexpect
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from lldbbench import *
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class AttachThenDisassemblyBench(BenchBase):
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mydir = os.path.join("benchmarks", "disassembly")
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def setUp(self):
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BenchBase.setUp(self)
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if lldb.bmExecutable:
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self.exe = lldb.bmExecutable
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else:
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self.exe = self.lldbHere
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self.count = lldb.bmIterationCount
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if self.count <= 0:
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self.count = 10
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@benchmarks_test
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def test_attach_then_disassembly(self):
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"""Attach to a spawned lldb process then run disassembly benchmarks."""
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print
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self.run_lldb_attach_then_disassembly(self.exe, self.count)
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print "lldb disassembly benchmark:", self.stopwatch
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def run_lldb_attach_then_disassembly(self, exe, count):
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target = self.dbg.CreateTarget(exe)
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# Spawn a new process and don't display the stdout if not in TraceOn() mode.
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import subprocess
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popen = subprocess.Popen([exe, self.lldbOption],
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stdout = open(os.devnull, 'w') if not self.TraceOn() else None)
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if self.TraceOn():
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print "pid of spawned process: %d" % popen.pid
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# Attach to the launched lldb process.
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listener = lldb.SBListener("my.attach.listener")
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error = lldb.SBError()
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process = target.AttachToProcessWithID(listener, popen.pid, error)
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# Set thread0 as the selected thread, followed by the 'MainLoop' frame
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# as the selected frame. Then do disassembly on the function.
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thread0 = process.GetThreadAtIndex(0)
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process.SetSelectedThread(thread0)
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i = 0
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found = False
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for f in thread0:
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#print "frame#%d %s" % (i, f.GetFunctionName())
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if "MainLoop" in f.GetFunctionName():
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found = True
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thread0.SetSelectedFrame(i)
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if self.TraceOn():
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print "Found frame#%d for function 'MainLoop'" % i
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break
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i += 1
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# Reset the stopwatch now.
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self.stopwatch.reset()
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for i in range(count):
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with self.stopwatch:
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# Disassemble the function.
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self.runCmd("disassemble -f")
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if __name__ == '__main__':
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import atexit
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lldb.SBDebugger.Initialize()
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atexit.register(lambda: lldb.SBDebugger.Terminate())
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unittest2.main()
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