#include <sys/mman.h>
#define _POSIX_C_SOURCE 200809L
#include <sys/stat.h>
#include <sys/select.h>
#include <fcntl.h>
#include <unistd.h>
#include <time.h>
#include <stdarg.h>
#include <stdio.h>
#include "all.h"

global pthread_barrier_t linux_thread_barrier;

fn Barrier osBarrierAlloc(u64 count) {
  pthread_barrier_init(&linux_thread_barrier, NULL, count);
  Barrier result = {(u64)&linux_thread_barrier};
  return result;
}

fn void osBarrierRelease(Barrier barrier) {
  pthread_barrier_t* addr = (pthread_barrier_t*)barrier.a[0];
  pthread_barrier_destroy(addr);
}

fn void osBarrierWait(Barrier barrier) {
  pthread_barrier_t* addr = (pthread_barrier_t*)barrier.a[0];
  pthread_barrier_wait(addr);
}

// Time
fn void osSleepMicroseconds(u32 t) {
  struct timespec ts = { t / MICROSECONDS_PER_SECOND, (t % MICROSECONDS_PER_SECOND)*NANOSECONDS_PER_MICROSECOND };
  nanosleep(&ts, NULL);
}

// Files
  /*
fn bool osFileCreate(String filename) {
  M_Scratch scratch = scratch_get();
  string nt = str_copy(&scratch.arena, filename);
  bool result = true;
  size_t handle = open((const char*) nt.str, O_RDWR | O_CREAT, S_IRUSR | S_IRGRP | S_IROTH);
  if (handle == -1) {
      result = false;
  }
  scratch_return(&scratch);
  close(handle);
  return true;
  bool result = true;
  size_t handle = open((str)filename.bytes, O_RDWR | O_CREAT, S_IRUSR | S_IRGRP | S_IROTH);
  if (handle == -1) {
    result = false;
  }
  if (close(handle) == -1) {
    result = false;
  }
  return result;
}
  */

// Misc
fn void osDebugPrint(bool debug_mode, const char * format, ... ) {
  if (debug_mode) {
    va_list args;
    va_start(args, format);
    vprintf(format, args);
    va_end(args);
  }
}