[Lldb-commits] [lldb] r226852 - Add a benchmark test case that shows how much slower repeat 'continue' commands are than going through the SB API directly

[Enrico Granata]

Author: enrico
Date: Thu Jan 22 13:33:53 2015
New Revision: 226852

URL: http://llvm.org/viewvc/llvm-project?rev=226852&view=rev
Log:
Add a benchmark test case that shows how much slower repeat 'continue' commands are than going through the SB API directly

Added:
    lldb/trunk/test/benchmarks/continue/
    lldb/trunk/test/benchmarks/continue/Makefile
    lldb/trunk/test/benchmarks/continue/TestBenchmarkContinue.py
    lldb/trunk/test/benchmarks/continue/main.cpp

Added: lldb/trunk/test/benchmarks/continue/Makefile
URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/test/benchmarks/continue/Makefile?rev=226852&view=auto
==============================================================================
--- lldb/trunk/test/benchmarks/continue/Makefile (added)
+++ lldb/trunk/test/benchmarks/continue/Makefile Thu Jan 22 13:33:53 2015
@@ -0,0 +1,5 @@
+LEVEL = ../../make
+
+CXX_SOURCES := main.cpp
+
+include $(LEVEL)/Makefile.rules

Added: lldb/trunk/test/benchmarks/continue/TestBenchmarkContinue.py
URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/test/benchmarks/continue/TestBenchmarkContinue.py?rev=226852&view=auto
==============================================================================
--- lldb/trunk/test/benchmarks/continue/TestBenchmarkContinue.py (added)
+++ lldb/trunk/test/benchmarks/continue/TestBenchmarkContinue.py Thu Jan 22 13:33:53 2015
@@ -0,0 +1,79 @@
+"""
+Test lldb data formatter subsystem.
+"""
+
+import os, time
+import unittest2
+import lldb
+from lldbbench import *
+import lldbutil
+
+class TestBenchmarkContinue(BenchBase):
+
+    mydir = TestBase.compute_mydir(__file__)
+
+    @benchmarks_test
+    @unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin")
+    @dsym_test
+    def test_with_dsym_and_run_command(self):
+        """Benchmark different ways to continue a process"""
+        self.buildDsym()
+        self.data_formatter_commands()
+
+    @benchmarks_test
+    @skipIfLinux # No standard locations for libc++ on Linux, so skip for now 
+    @dwarf_test
+    def test_with_dwarf_and_run_command(self):
+        """Benchmark different ways to continue a process"""
+        self.buildDwarf()
+        self.data_formatter_commands()
+
+    def setUp(self):
+        # Call super's setUp().
+        BenchBase.setUp(self)
+
+    def data_formatter_commands(self):
+        """Benchmark different ways to continue a process"""
+        self.runCmd("file a.out", CURRENT_EXECUTABLE_SET)
+
+        bkpt = self.target().FindBreakpointByID(lldbutil.run_break_set_by_source_regexp (self, "// break here"))
+
+        self.runCmd("run", RUN_SUCCEEDED)
+
+        # The stop reason of the thread should be breakpoint.
+        self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
+            substrs = ['stopped',
+                       'stop reason = breakpoint'])
+
+        # This is the function to remove the custom formats in order to have a
+        # clean slate for the next test case.
+        def cleanup():
+            self.runCmd('type format clear', check=False)
+            self.runCmd('type summary clear', check=False)
+            self.runCmd('type filter clear', check=False)
+            self.runCmd('type synth clear', check=False)
+            self.runCmd("settings set target.max-children-count 256", check=False)
+
+        # Execute the cleanup function during test case tear down.
+        self.addTearDownHook(cleanup)
+        
+        runCmd_sw = Stopwatch()
+        lldbutil_sw = Stopwatch()
+
+        for i in range(0,15):
+            runCmd_sw.start()
+            self.runCmd("continue")
+            runCmd_sw.stop()
+        
+        for i in range(0,15):
+            lldbutil_sw.start()
+            lldbutil.continue_to_breakpoint(self.process(), bkpt)
+            lldbutil_sw.stop()
+            
+        print "runCmd: %s\nlldbutil: %s" % (runCmd_sw,lldbutil_sw)
+
+if __name__ == '__main__':
+    import atexit
+    lldb.SBDebugger.Initialize()
+    atexit.register(lambda: lldb.SBDebugger.Terminate())
+    unittest2.main()

Added: lldb/trunk/test/benchmarks/continue/main.cpp
URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/test/benchmarks/continue/main.cpp?rev=226852&view=auto
==============================================================================
--- lldb/trunk/test/benchmarks/continue/main.cpp (added)
+++ lldb/trunk/test/benchmarks/continue/main.cpp Thu Jan 22 13:33:53 2015
@@ -0,0 +1,36 @@
+#include <map>
+
+#define intint_map std::map<int, int> 
+
+int g_the_foo = 0;
+
+int thefoo_rw(int arg = 1)
+{
+	if (arg < 0)
+		arg = 0;
+	if (!arg)
+		arg = 1;
+	g_the_foo += arg;
+	return g_the_foo;
+}
+
+int main()
+{
+    intint_map ii;
+    
+    for (int i = 0; i < 15; i++)
+    {
+        ii[i] = i + 1;
+        thefoo_rw(i); // break here
+    }
+
+    ii.clear();
+
+    for (int j = 0; j < 15; j++)
+    {
+        ii[j] = j + 1;
+        thefoo_rw(j); // break here
+    }
+    
+    return 0;
+}