d890bfc962
built locally from the source tree. This is distinguished from self.lldbExec, which can be used by test/benchmarks to measure the performances against other debuggers. You can use environment variable LLDB_EXEC to specify self.lldbExec to the dotest.py test driver, otherwise it is going to be populated with self.lldbHere. Modify the regular tests under test dir, i.e., not test/benchmarks, to use self.lldbHere. Also modify the benchmarks tests to use self.lldbHere when it needs an 'lldb' executable with debug info to do the performance measurements. llvm-svn: 138608
128 lines
4.0 KiB
Python
128 lines
4.0 KiB
Python
"""Disassemble lldb's Driver::MainLoop() functions comparing lldb against gdb."""
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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 DisassembleDriverMainLoop(BenchBase):
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mydir = os.path.join("benchmarks", "example")
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def setUp(self):
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BenchBase.setUp(self)
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self.exe = self.lldbHere
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self.function = 'Driver::MainLoop()'
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self.lldb_avg = None
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self.gdb_avg = None
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@benchmarks_test
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def test_run_lldb_then_gdb(self):
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"""Test disassembly on a large function with lldb vs. gdb."""
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print
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self.run_lldb_disassembly(self.exe, self.function, 5)
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print "lldb benchmark:", self.stopwatch
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self.run_gdb_disassembly(self.exe, self.function, 5)
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print "gdb benchmark:", self.stopwatch
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print "lldb_avg/gdb_avg: %f" % (self.lldb_avg/self.gdb_avg)
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@benchmarks_test
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def test_run_gdb_then_lldb(self):
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"""Test disassembly on a large function with lldb vs. gdb."""
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print
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self.run_gdb_disassembly(self.exe, self.function, 5)
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print "gdb benchmark:", self.stopwatch
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self.run_lldb_disassembly(self.exe, self.function, 5)
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print "lldb benchmark:", self.stopwatch
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print "lldb_avg/gdb_avg: %f" % (self.lldb_avg/self.gdb_avg)
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def run_lldb_disassembly(self, exe, function, count):
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# Set self.child_prompt, which is "(lldb) ".
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self.child_prompt = '(lldb) '
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prompt = self.child_prompt
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# So that the child gets torn down after the test.
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self.child = pexpect.spawn('%s %s' % (self.lldbExec, exe))
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child = self.child
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# Turn on logging for what the child sends back.
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if self.TraceOn():
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child.logfile_read = sys.stdout
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child.expect_exact(prompt)
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child.sendline('breakpoint set -F %s' % function)
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child.expect_exact(prompt)
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child.sendline('run')
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child.expect_exact(prompt)
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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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child.sendline('disassemble -f')
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child.expect_exact(prompt)
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child.sendline('next')
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child.expect_exact(prompt)
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child.sendline('quit')
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try:
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self.child.expect(pexpect.EOF)
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except:
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pass
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self.lldb_avg = self.stopwatch.avg()
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if self.TraceOn():
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print "lldb disassembly benchmark:", str(self.stopwatch)
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self.child = None
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def run_gdb_disassembly(self, exe, function, count):
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# Set self.child_prompt, which is "(gdb) ".
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self.child_prompt = '(gdb) '
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prompt = self.child_prompt
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# So that the child gets torn down after the test.
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self.child = pexpect.spawn('gdb %s' % exe)
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child = self.child
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# Turn on logging for what the child sends back.
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if self.TraceOn():
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child.logfile_read = sys.stdout
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child.expect_exact(prompt)
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child.sendline('break %s' % function)
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child.expect_exact(prompt)
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child.sendline('run')
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child.expect_exact(prompt)
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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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child.sendline('disassemble')
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child.expect_exact(prompt)
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child.sendline('next')
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child.expect_exact(prompt)
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child.sendline('quit')
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child.expect_exact('The program is running. Exit anyway?')
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child.sendline('y')
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try:
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self.child.expect(pexpect.EOF)
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except:
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pass
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self.gdb_avg = self.stopwatch.avg()
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if self.TraceOn():
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print "gdb disassembly benchmark:", str(self.stopwatch)
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self.child = None
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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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