[Lldb-commits] [lldb] r142949 - in /lldb/trunk/test: benchmarks/turnaround/ benchmarks/turnaround/TestCompileRunToBreakpointTurnaround.py dotest.py
Johnny Chen
johnny.chen at apple.com
Tue Oct 25 13:08:03 PDT 2011
Author: johnny
Date: Tue Oct 25 15:08:03 2011
New Revision: 142949
URL: http://llvm.org/viewvc/llvm-project?rev=142949&view=rev
Log:
Benchmark the turnaround time starting a debugger and run to the breakpoint with lldb vs. gdb.
An example (with /Developer/usr/bin/lldb vs. /usr/bin/gdb):
[13:05:04] johnny:/Volumes/data/lldb/svn/trunk/test $ ./dotest.py -v +b -n -p TestCompileRunToBreakpointTurnaround.py
1: test_run_lldb_then_gdb (TestCompileRunToBreakpointTurnaround.CompileRunToBreakpointBench)
Benchmark turnaround time with lldb vs. gdb. ...
lldb turnaround benchmark: Avg: 4.574600 (Laps: 3, Total Elapsed Time: 13.723799)
gdb turnaround benchmark: Avg: 7.966713 (Laps: 3, Total Elapsed Time: 23.900139)
lldb_avg/gdb_avg: 0.574214
ok
----------------------------------------------------------------------
Ran 1 test in 55.462s
OK
Added:
lldb/trunk/test/benchmarks/turnaround/
lldb/trunk/test/benchmarks/turnaround/TestCompileRunToBreakpointTurnaround.py
Modified:
lldb/trunk/test/dotest.py
Added: lldb/trunk/test/benchmarks/turnaround/TestCompileRunToBreakpointTurnaround.py
URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/test/benchmarks/turnaround/TestCompileRunToBreakpointTurnaround.py?rev=142949&view=auto
==============================================================================
--- lldb/trunk/test/benchmarks/turnaround/TestCompileRunToBreakpointTurnaround.py (added)
+++ lldb/trunk/test/benchmarks/turnaround/TestCompileRunToBreakpointTurnaround.py Tue Oct 25 15:08:03 2011
@@ -0,0 +1,122 @@
+"""Benchmark the turnaround time starting a debugger and run to the breakpont with lldb vs. gdb."""
+
+import os, sys
+import unittest2
+import lldb
+import pexpect
+from lldbbench import *
+
+class CompileRunToBreakpointBench(BenchBase):
+
+ mydir = os.path.join("benchmarks", "turnaround")
+
+ def setUp(self):
+ BenchBase.setUp(self)
+ self.exe = self.lldbHere
+ self.function = 'Driver::MainLoop()'
+
+ self.count = lldb.bmIterationCount
+ if self.count <= 0:
+ self.count = 3
+
+ self.lldb_avg = None
+ self.gdb_avg = None
+
+ @benchmarks_test
+ def test_run_lldb_then_gdb(self):
+ """Benchmark turnaround time with lldb vs. gdb."""
+ print
+ self.run_lldb_turnaround(self.exe, self.function, self.count)
+ print "lldb turnaround benchmark:", self.stopwatch
+ self.run_gdb_turnaround(self.exe, self.function, self.count)
+ print "gdb turnaround benchmark:", self.stopwatch
+ print "lldb_avg/gdb_avg: %f" % (self.lldb_avg/self.gdb_avg)
+
+ def run_lldb_turnaround(self, exe, function, count):
+ def run_one_round():
+ prompt = self.child_prompt
+
+ # So that the child gets torn down after the test.
+ self.child = pexpect.spawn('%s %s %s' % (self.lldbExec, self.lldbOption, exe))
+ child = self.child
+
+ # Turn on logging for what the child sends back.
+ if self.TraceOn():
+ child.logfile_read = sys.stdout
+
+ child.expect_exact(prompt)
+ child.sendline('breakpoint set -F %s' % function)
+ child.expect_exact(prompt)
+ child.sendline('run')
+ child.expect_exact(prompt)
+
+ # Set self.child_prompt, which is "(lldb) ".
+ self.child_prompt = '(lldb) '
+ # Reset the stopwatch now.
+ self.stopwatch.reset()
+
+ for i in range(count + 1):
+ # Ignore the first invoke lldb and run to the breakpoint turnaround time.
+ if i == 0:
+ run_one_round()
+ else:
+ with self.stopwatch:
+ run_one_round()
+
+ self.child.sendline('quit')
+ try:
+ self.child.expect(pexpect.EOF)
+ except:
+ pass
+
+ self.lldb_avg = self.stopwatch.avg()
+ self.child = None
+
+ def run_gdb_turnaround(self, exe, function, count):
+ def run_one_round():
+ prompt = self.child_prompt
+
+ # So that the child gets torn down after the test.
+ self.child = pexpect.spawn('gdb --nx %s' % exe)
+ child = self.child
+
+ # Turn on logging for what the child sends back.
+ if self.TraceOn():
+ child.logfile_read = sys.stdout
+
+ child.expect_exact(prompt)
+ child.sendline('break %s' % function)
+ child.expect_exact(prompt)
+ child.sendline('run')
+ child.expect_exact(prompt)
+
+ # Set self.child_prompt, which is "(gdb) ".
+ self.child_prompt = '(gdb) '
+ # Reset the stopwatch now.
+ self.stopwatch.reset()
+
+ for i in range(count+1):
+ # Ignore the first invoke lldb and run to the breakpoint turnaround time.
+ if i == 0:
+ run_one_round()
+ else:
+ with self.stopwatch:
+ run_one_round()
+
+ self.child.sendline('quit')
+ self.child.expect_exact('The program is running. Exit anyway?')
+ self.child.sendline('y')
+ try:
+ self.child.expect(pexpect.EOF)
+ except:
+ pass
+
+ self.gdb_avg = self.stopwatch.avg()
+ self.child = None
+
+
+if __name__ == '__main__':
+ import atexit
+ lldb.SBDebugger.Initialize()
+ atexit.register(lambda: lldb.SBDebugger.Terminate())
+ unittest2.main()
Modified: lldb/trunk/test/dotest.py
URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/test/dotest.py?rev=142949&r1=142948&r2=142949&view=diff
==============================================================================
--- lldb/trunk/test/dotest.py (original)
+++ lldb/trunk/test/dotest.py Tue Oct 25 15:08:03 2011
@@ -666,18 +666,16 @@
if lldbHere:
os.environ["LLDB_HERE"] = lldbHere
- if not lldbExec:
- lldbExec = lldbHere
- os.environ["LLDB_BUILD_DIR"] = os.path.split(lldbExec)[0]
+ os.environ["LLDB_BUILD_DIR"] = os.path.split(lldbHere)[0]
if not noHeaders:
print "LLDB build dir:", os.environ["LLDB_BUILD_DIR"]
# One last chance to locate the 'lldb' executable.
if not lldbExec:
- if lldbHere:
+ lldbExec = which('lldb')
+ if lldbHere and not lldbExec:
lldbExec = lldbHere
- else:
- lldbExec = which('lldb')
+
if not lldbExec:
print "The 'lldb' executable cannot be located. Some of the tests may not be run as a result."
More information about the lldb-commits
mailing list