b8da426285
Add benchmarks for expression evaluations (TestExpressionCmd.py) and disassembly (TestDoAttachThenDisassembly.py). An example: [17:45:55] johnny:/Volumes/data/lldb/svn/trunk/test $ ./bench.py 2>&1 | grep -P '^lldb.*benchmark:' lldb startup delay (create fresh target) benchmark: Avg: 0.104274 (Laps: 30, Total Elapsed Time: 3.128214) lldb startup delay (set first breakpoint) benchmark: Avg: 0.102216 (Laps: 30, Total Elapsed Time: 3.066470) lldb frame variable benchmark: Avg: 1.649162 (Laps: 20, Total Elapsed Time: 32.983245) lldb stepping benchmark: Avg: 0.104409 (Laps: 50, Total Elapsed Time: 5.220461) lldb expr cmd benchmark: Avg: 0.206774 (Laps: 25, Total Elapsed Time: 5.169350) lldb disassembly benchmark: Avg: 0.089086 (Laps: 10, Total Elapsed Time: 0.890859) llvm-svn: 142708
67 lines
2.2 KiB
Python
67 lines
2.2 KiB
Python
"""Test lldb's disassemblt speed."""
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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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@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(10)
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print "lldb disassembly benchmark:", self.stopwatch
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def run_lldb_attach_then_disassembly(self, count):
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target = self.dbg.CreateTarget(self.lldbHere)
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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([self.lldbHere, 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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