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Enrico Granata f58cececaa Initial checkin of a new project: LLDB Performance Testing Infrastructure 
This is a very basic implementation of a library that easily allows to drive LLDB.framework to write test cases for performance

This is separate from the LLDB testsuite in test/ in that:
a) this uses C++ instead of Python to avoid measures being affected by SWIG
b) this is in very early development and needs lots of tweaking before it can be considered functionally complete
c) this is not meant to test correctness but to help catch performance regressions

There is a sample application built against the library (in darwin/sketch) that uses the famous sample app Sketch as an inferior to measure certain basic parameters of LLDB's behavior.
The resulting output is a PLIST much like the following:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<array>
	<dict>
		<key>fetch-frames</key>
		<real>0.13161715522222225</real>
	</dict>
	<dict>
		<key>file-line-bkpt</key>
		<real>0.029111678750000002</real>
	</dict>
	<dict>
		<key>fetch-modules</key>
		<real>0.00026376766666666668</real>
	</dict>
	<dict>
		<key>fetch-vars</key>
		<real>0.17820429311111111</real>
	</dict>
	<dict>
		<key>run-expr</key>
		<real>0.029676525769230768</real>
	</dict>
</array>
</plist>

Areas for improvement:
- code cleanups (I will be out of the office for a couple days this coming week, but please keep ideas coming!)
- more metrics and test cases
- better error checking

This toolkit also comprises a simple event-loop-driven controller for LLDB, similar yet much simpler to what the Driver does to implement the lldb command-line tool.

llvm-svn: 176715
 		2013-03-08 20:29:13 +00:00
..
common Fixed a case where the result of std::string's c_str() method was being called on a local variable and returned as a const char * incorrectly. We used to cache the thread names for threads in the current host process, but we shoudn't be caching that as the names can change over time, so now a std::string is returned from Host::GetThreadName(). 2013-02-27 22:51:58 +00:00
freebsd Adding CMake build system to LLDB. Some known issues remain: 2013-02-21 20:58:22 +00:00
linux Adding CMake build system to LLDB. Some known issues remain: 2013-02-21 20:58:22 +00:00
macosx Initial checkin of a new project: LLDB Performance Testing Infrastructure 2013-03-08 20:29:13 +00:00
CMakeLists.txt Adding CMake build system to LLDB. Some known issues remain: 2013-02-21 20:58:22 +00:00
Makefile Patch by David Forsythe to build lldb on FreeBSD! 2011-08-02 20:52:42 +00:00