forked from OSchip/llvm-project
135 lines
4.2 KiB
Python
135 lines
4.2 KiB
Python
"""Test evaluating expressions repeatedly 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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from lldbbench import *
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class RepeatedExprsCase(BenchBase):
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mydir = TestBase.compute_mydir(__file__)
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def setUp(self):
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BenchBase.setUp(self)
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self.source = 'main.cpp'
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self.line_to_break = line_number(self.source, '// Set breakpoint here.')
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self.lldb_avg = None
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self.gdb_avg = None
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self.count = lldb.bmIterationCount
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if self.count <= 0:
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self.count = 100
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@benchmarks_test
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def test_compare_lldb_to_gdb(self):
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"""Test repeated expressions with lldb vs. gdb."""
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self.buildDefault()
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self.exe_name = 'a.out'
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print
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self.run_lldb_repeated_exprs(self.exe_name, self.count)
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print "lldb benchmark:", self.stopwatch
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self.run_gdb_repeated_exprs(self.exe_name, self.count)
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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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def run_lldb_repeated_exprs(self, exe_name, count):
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import pexpect
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exe = os.path.join(os.getcwd(), exe_name)
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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 %s' % (self.lldbExec, self.lldbOption, 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 -l %d' % (self.source, self.line_to_break))
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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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expr_cmd1 = 'expr ptr[j]->point.x'
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expr_cmd2 = 'expr ptr[j]->point.y'
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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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child.sendline(expr_cmd1)
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child.expect_exact(prompt)
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child.sendline(expr_cmd2)
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child.expect_exact(prompt)
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child.sendline('process continue')
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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 expression benchmark:", str(self.stopwatch)
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self.child = None
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def run_gdb_repeated_exprs(self, exe_name, count):
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import pexpect
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exe = os.path.join(os.getcwd(), exe_name)
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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 --nx %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:%d' % (self.source, self.line_to_break))
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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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expr_cmd1 = 'print ptr[j]->point.x'
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expr_cmd2 = 'print ptr[j]->point.y'
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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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child.sendline(expr_cmd1)
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child.expect_exact(prompt)
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child.sendline(expr_cmd2)
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child.expect_exact(prompt)
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child.sendline('continue')
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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 expression 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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