C++ (Cpp) FileDescriptor::Read示例

ssize_t read(int handle, void *out, size_t length)
{
	FileDescriptor *descriptor = static_cast<FileDescriptor*>(GetResource(handle, OBJ_FD));
	if (descriptor == 0)
		return E_BAD_HANDLE;

	ssize_t err = descriptor->Read(out, length);
	descriptor->ReleaseRef();
	return err;
}

示例#2

显示文件

文件： TTYKeyboard.cpp 项目： ThomasXBMC/XCSoar

bool
TTYKeyboard::OnFileEvent(FileDescriptor fd, unsigned mask)
{
  char buffer[256];
  const ssize_t nbytes = fd.Read(buffer, sizeof(buffer));
  if (nbytes > 0) {
    for (ssize_t i = 0; i < nbytes; ++i)
      HandleInputByte(buffer[i]);
  } else if (nbytes == 0 || errno != EAGAIN) {
    queue.Quit();
    return false;
  }

  return true;
}

示例#3

显示文件

文件： LogCat.cpp 项目： robertscottbeattie/xcsoardev

bool
LogCatReader::OnFileEvent(int _fd, unsigned mask)
{
  assert(_fd == fd.Get());

  char buffer[1024];
  ssize_t nbytes = fd.Read(buffer, sizeof(buffer));
  if (nbytes > 0) {
    if (data.length() < 1024 * 1024)
      data.append(buffer, nbytes);
    return true;
  } else {
    EndOfFile();
    return false;
  }
}