@ciura_victor - 2020: The Year of Sanitizers? Shadow Mapping Process Memory Shadow Memory 👈 Red zones my allocated memory ➡ 🧪☣ Poisoned memory84 2020 Victor Ciura | @ciura_victor - 2020: 0xbadf00d p ShadowByte(p)89 2020 Victor Ciura | @ciura_victor - 2020: The Year of Sanitizers? Heap Red Zones alloc 1 alloc 2 alloc 3 alloc 4 alloc 5 alloc 1 alloc 2 alloc 3 alloc 4 alloc 5 malloc() ASAN malloc()90 2020 Victor Ciura | @ciura_victor - 2020: The Year of Sanitizers? Heap Red Zones alloc 1 alloc 2 alloc 3 alloc 4 alloc 5 ASAN malloc() alloc 1 alloc 2 alloc 3 alloc 4 alloc 5

std::vector{ "blue", "red", "green" }; std::string numberDashColor(int number, std::string const& color) { return std::to_string(number) + '-' + color ; } 1-blue 2-red 3-greenpipes::cartesian_product(numbers >{ "blue", "red", "green" }; std::string numberDashColor(int number, std::string const& color) { return std::to_string(number) + '-' + color ; } 1-blue 1-red 1-green 2-blue 2-red 2-green 3-blue 3-blue 3-red 3-greenpipes::combinations(numbers) 48 auto const numbers = std::vector{ 1, 2, 3, 4, 5 }; 1 - 2 1 - 3 1 - 4 1 - 5 2 - 3 2 - 4 2 - 5 3 - 4 3 - 5 4 - 5 >>= pipes::tr

updates correctly") { // Arrange ColorWidget widget; QColor red("red"); // Act widget.setColor(red); // Assert CHECK(widget.color() == red); }29 “Quickly Testing?” • From 0 to 1 tests always hardest

other decision making) ○ In-game resource management is taking place 12 Command and Conquer Red AlertReal time systems (2/2) ● So just looking at the animation on the right--there is a lot going other decision making) ○ In-game resource management is taking place 13 Command and Conquer Red Alert For today’s talk, I want us to think about software design for a real time application--I’ll maintainable ■ and extensible ○ In other words--what is the right pattern? 35 Command and Conquer Red AlertSo let’s think about this game (2/2) ● There are many different types of objects ○ How do we

scheduled ▪ Job decrements "accum" counter when finished • Inspired by Naughty Dog and CD Projekt RED job systems 12Jobs run on worker threads Number worker threads limited to logical processors Counters CPU Usage 37Profiler captures of simulated example • Yellow - ordinary jobs - capped at 50% CPU • Red - ordinary jobs part of saving - capped at 50% • Teal - saving jobs Easier to see here - I've made "Nowogrodzka" Crew (from CD Projekt RED) ▪ Charles Tremblay ▪ David Block ▪ Tommi Nykopp ▪ Wil McVicar • Technology Team at Techland 47Friends and former colleagues from CD Projekt RED Colleagues from the Technology

true when reached enum class Color { Red, Blue, Green, Yellow }; void do_shadow_color(int shadow) { Color cl1, cl2; if (shadow) cl1 = Color::Red, cl2 = Color::Blue; else cl1 = Color::Green, cl2 = Color::Yellow; if (cl1 == Color::Red || cl2 == Color::Yellow) {...} }Data Flow Analysis – void linked_list::process() { for (node *pt = head; pt != nullptr; pt

std::meta::name_of(e); } }; return result; } enum Color { red, green, blue }; static_assert(enum_to_string(Color::red) == "red"); static_assert(enum_to_string(Color(42)) == ""); 1 2 3

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