tomas789’s gists

tomas789 / _etc_conf.d_Xvfb

Created February 12, 2013 07:09

	XVFB=/usr/bin/Xvfb
	XVFBARGS=":100 -screen 0 1600x1200x24 -auth /etc/conf.d/Xvfb.cfg -nolisten tcp"
	PIDFILE=/var/run/Xvfb.pid

tomas789 / gist:4761447

Created February 12, 2013 10:31

Transparent Multi-hop SSH (http://sshmenu.sourceforge.net/articles/transparent-mulithop.html)

	Host ruapehu
	HostName ruapehu.example.com

	Host aoraki
	ProxyCommand ssh -q ruapehu nc -q0 aoraki 22

	Host tongariro
	ProxyCommand ssh -q aoraki nc -q0 %h 22

tomas789 / gist:5520268

Created May 5, 2013 09:28

	#include <iostream>
	#include <fstream>
	#include <string>

	void gen_random(char *s, const int len) {
	static const char alphanum[] =
	"0123456789"
	"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
	"abcdefghijklmnopqrstuvwxyz";

tomas789 / gist:6855047

Last active December 24, 2015 19:59

Parallel processing

	#include <iostream>
	#include <thread>
	#include <atomic>
	#include <mutex>
	#include <vector>

	class example {

	std::atomic<std::size_t> counter;
	std::size_t stop = 160;

tomas789 / gist:7844152

Created December 7, 2013 15:46

Template-based Visitor pattern implementation in C++ PS: Even more generic version. Notice that actual visitor class have non-virtual methods. This allows to have them templated.

	#include <iostream>
	#include <utility>

	template <typename ... Types>
	class Visitor;

	template <typename T>
	class Visitor<T> {
	public:
	virtual void visit(T & visitable) = 0;

tomas789 / jit.cpp

Created December 28, 2013 17:57

LLVM JIT Example - Example of very simple JIT using LLVM. It compiles function with prototype `int64_t()` returning value `765`. Build: clang++ `llvm-config --cppflags --ldflags --libs core jit X86` jit.cpp

	#include <iostream>
	#include <cstdint>
	#include <string>

	#include "llvm/ExecutionEngine/JIT.h"
	#include "llvm/IR/IRBuilder.h"
	#include "llvm/IR/Module.h"
	#include "llvm/PassManager.h"
	#include "llvm/Support/TargetSelect.h"
	#include "llvm/Analysis/Verifier.h"

tomas789 / jit2.cpp

Created December 28, 2013 18:42

Another LLVM JIT - Loading variable from memory clang++-mp-3.3 `llvm-config --cppflags --ldflags --libs core jit X86` jit2.cpp

	#include <iostream>
	#include <cstdint>
	#include <string>

	#include "llvm/ExecutionEngine/JIT.h"
	#include "llvm/IR/IRBuilder.h"
	#include "llvm/IR/Module.h"
	#include "llvm/PassManager.h"
	#include "llvm/Support/TargetSelect.h"
	#include "llvm/Analysis/Verifier.h"

tomas789 / llvmfcs.cpp

Created December 28, 2013 19:39

Dump functions from LLVM's bc file Compile: clang++-mp-3.3 `llvm-config-mp-3.3 --cxxflags --ldflags --libs core jit X86 bitreader` -std=c++0x -o llvmfcs llvmfcs.cpp Usage: llvmfcs filename.bc

	#include <iostream>
	#include <string>

	#include <llvm/ADT/OwningPtr.h>
	#include <llvm/Bitcode/ReaderWriter.h>
	#include <llvm/IR/LLVMContext.h>
	#include <llvm/IR/Module.h>
	#include <llvm/Support/MemoryBuffer.h>
	#include <llvm/Support/system_error.h>

tomas789 / gist:10915069

Created April 16, 2014 18:07

C++/C++11 Variadic template CSV parser. Supports quoted strings, custom parsers, strongly typed, STL-like, generic, fast, highly customizable.

	#include <functional>
	#include <fstream>
	#include <iostream>
	#include <limits>
	#include <sstream>
	#include <tuple>
	#include <vector>

	template <typename ... TList>
	struct DefaultParsersTuple;

tomas789 / calibration.yaml

Created October 2, 2016 06:32

Sample camera calibration file for tonav (https://github.com/tomas789/tonav)

	#--------------------------------------------------------------------------------------------
	# Camera Parameters. Adjust them!
	#--------------------------------------------------------------------------------------------

	# Camera calibration and distortion parameters (OpenCV)
	Camera.fx: 528.52949934564765
	Camera.fy: 528.52949934564765
	Camera.cx: 319.5
	Camera.cy: 239.5

Tomas Krejci tomas789