Function check_available_RAM

LASzip/src/mydefs.cpp:557–574

Checks whether the available RAM is larger than the requested allocation. The check is only performed for requests of at least 1 MB to avoid overhead for small allocations.

/// Checks whether the available RAM is larger than the requested allocation. 
/// The check is only performed for requests of at least 1 MB to avoid overhead for small allocations.
bool check_available_RAM(size_t size) {
  const size_t MIN_MB = 1024 * 1024;  // 1 MB in Bytes

  if (size > MIN_MB) {
    size_t ram_size = get_available_RAM();

    if (size > ram_size) {
      double value_1, value_2;
      const char *unit_1, *unit_2;
    
      bytes_to_readable(size, &value_1, &unit_1);
      bytes_to_readable(ram_size, &value_2, &unit_2);
      LASMessage(LAS_WARNING, "failed to allocate %.0f%s memory as only approx. %.0f%s free reported. An error may occur", value_1, unit_1, value_2, unit_2);
      return true;
    }
  }
  return false;
}

/// extension of the realloc function to check memory allocation errors
void* realloc_las(void* ptr, size_t size) {