pankkor

// Unigine C++ School 2
// Homework 1
//
// by griff
//

#include <fstream>
#include <iostream>
#include <iterator>
#include <sstream>

pankkor

enum EventTest {
    // + brain dead simple
    // - need to manually unsubscribe
    class Event<Args> {
        typealias CallbackType = (Args) -> Void

        private var id: UInt64 = 0
        private var callbacks = [UInt64: CallbackType]()

        func subscribe(_ callback: @escaping CallbackType) -> UInt64 {

pankkor

// Reverse char string in place
//
// Build:
// clang -O2 -DTEST -mavx2 -Wall -Wpedantic -Wextra str_reverse.c -o str_reverse
// or
// clang -O2 -DTEST -mssse3 -Wall -Wpedantic -Wextra str_reverse.c -o str_reverse
//
#include <stdint.h> // uint64_t uint32_t
#include <stdlib.h> // abort()

pankkor

#include <sys/sysctl.h> // sysctlbyname

i64 cache_line_size() {
  i64 ret = 0;
  u64 size = sizeof ret;
  if (sysctlbyname("hw.cachelinesize", &ret, &size, NULL, 0) == -1) {
      return -1;
  }
  return ret;
}

pankkor

#ifndef __aarch64__
#error Arches other than arm64 are not supported
#endif // #ifndef __aarch64__

#define FORCE_INLINE inline __attribute__((always_inline))

typedef unsigned long u64;

static FORCE_INLINE u64 rdtsc(void) {
  u64 val;

pankkor

// disable optimisations
#ifdef _MSC_VER

#pragma optimize("", off)
inline void bench_opt_off(const void*) {}
#pragma optimize("", on)

#define ESCAPE(p)  bench_opt_off(p)
#define CLOBBER(p) bench_opt_off(p)

pankkor

#ifndef __aarch64__
#error Architectures other than arm64 are not supported
#endif // #ifndef __aarch64__

#include <arm_neon.h>
#include <stdio.h> // printf

typedef int           i32;
typedef unsigned int  u32;
typedef long          i64;

pankkor

#define ISB(option) __asm__ volatile ("isb " #option : : : "memory")
#define DSB(option) __asm__ volatile ("dsb " #option : : : "memory")
#define DMB(option) __asm__ volatile ("dmb " #option : : : "memory")

pankkor

# Chrome: disable swipe navigation
defaults write com.google.Chrome AppleEnableSwipeNavigateWithScrolls -bool false

# Finder: show full path in the title
defaults write com.apple.finder _FXShowPosixPathInTitle -bool YES

# Xcode: show build times
defaults write com.apple.dt.Xcode ShowBuildOperationDuration YES

pankkor

// string view
struct sv {
  const char *begin;
  const char *end;
};

const char *s_dot = ".";

// Custom basename returning string view
struct sv basename(const char *path) {